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公开(公告)号：US20230400419A1
公开(公告)日：2023-12-14
申请号：US18239669
申请日：2023-08-29
摘要： Portable microwave material gauge for determining the quality of a pavement material is provided. The gauge includes an electromagnetic field generator configured to generate an electric field mode that penetrates into the material wherein the material includes a heterogeneous material including at least one of a pavement material and a soil material, a calibration data set, a sensor of size and shape to support the electric field mode and to determine the response of the pavement material to the electric field wherein determining the response includes determining a change in the permittivity as a function of a change in the quality of the material; and an analyzer configured to correlate the sensor permittivity response to the calibration data set wherein correlating the response includes using stored relationships between the material quality and the sensor response using calibration samples having changes in permittivity as a function of quality.
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公开(公告)号：US11740187B2
公开(公告)日：2023-08-29
申请号：US17159647
申请日：2021-01-27
摘要： Portable microwave material gauge for determining the quality of a pavement material is provided. The gauge includes an electromagnetic field generator configured to generate an electric field mode that penetrates into the material wherein the material includes a heterogeneous material including at least one of a pavement material and a soil material, a calibration data set, a sensor of size and shape to support the electric field mode and to determine the response of the pavement material to the electric field wherein determining the response includes determining a change in the permittivity as a function of a change in the quality of the material; and an analyzer configured to correlate the sensor permittivity response to the calibration data set wherein correlating the response includes using stored relationships between the material quality and the sensor response using calibration samples having changes in permittivity as a function of quality.
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3.发明申请公开(公告)号：US20230094204A1
公开(公告)日：2023-03-30
申请号：US18062165
申请日：2022-12-06
IPC分类号： G01N33/42 , G01N33/24 , G01N23/02 , G01N23/06 , G01N19/10 , G01N23/00 , G01N23/203 , G01N27/04 , G01N9/24
摘要： Methods, systems, and computer program products for determining a property of construction material. According to one aspect, a material property gauge operable to determine a property of construction material is disclosed. The gauge may include an electromagnetic sensor operable to measure a response of construction material to an electromagnetic field. Further, the electromagnetic sensor may be operable to produce a signal representing the measured response by the construction material to the electromagnetic field. An acoustic detector may be operable to detect a response of the construction material to the acoustical energy. Further, the acoustic detector may be operable to produce a signal representing the detected response by the construction material to the acoustical energy. A material property calculation function may be configured to calculate a property value associated with the construction material based upon the signals produced by the electromagnetic sensor and the acoustic detector.
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公开(公告)号：US20230023128A1
公开(公告)日：2023-01-26
申请号：US17958941
申请日：2022-10-03
发明人： David J. White
摘要： A compaction control system for and methods of accurately determining properties of compacted and/or existing ground materials is disclosed. The compaction control system includes a compaction machine that further includes a vibratory drum (or roller). The compaction machine is equipped with sensors to determine position and heading, vibration amplitudes at selected frequencies, and material type and moisture content information. Further, the compaction control system includes a controller and certain algorithms for processing the sensor information. Namely, a method is provided of using the sensor information to assess the improvement in compaction and then determine whether and/or when further ground improvement solutions are needed.
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公开(公告)号：US20230020213A1
公开(公告)日：2023-01-19
申请号：US17782329
申请日：2020-12-18
申请人： BOARD OF REGENTS OF THE NEVADA SYSTEM OF HIGHER EDUCATION, ON BEHALF OF THE UNIVERSTIY OF NEVADA, RE
发明人： Sesh COMMURI
摘要： A method, apparatus and system for providing an estimate of the level of compaction of a layer of pavement materials in real time. In some embodiments, a Retrofit Intelligent Compaction Analyzer (RICA) processor of a RICA device receives vibrational energy data from a sensor module which corresponds to impact responses of a drum of a roller machine during compaction of a pavement material over a section of pavement. The RICA processor also receives temperature data from the sensor module, determines an estimated level of compaction in real time of the section of pavement based on the vibrational energy data, pavement material characteristics data and the temperature data, and displays a density level percentage of the section of pavement on a display device for viewing by an operator of the roller machine.
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公开(公告)号：US11508195B2
公开(公告)日：2022-11-22
申请号：US16083966
申请日：2017-03-21
发明人： Yair Grof , Tzemah Kislev , Nadav Yoran , Haggai Alon
摘要： The present invention relates to an access control system, an access object and a method for access control. The access control system comprises an access request receiving device being configured and operable for receiving an access object; the access request receiving device comprising an emitter configured and operable for irradiating the access object with a radiation having a wavelength in the range of about 10″12 and 10″9 m and a detector configured and operable for detecting a response signal from the irradiated access object; a control circuit being configured and operable to receive the response signal from the access request receiving device and process the response signal to identify spectral features indicative of an XRF signature of the access object; wherein the control circuit is adapted to generate an unlocking signal for switching a module device between a locked state and an unlocked state upon identification of the XRF signature.
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公开(公告)号：US11460385B2
公开(公告)日：2022-10-04
申请号：US16787395
申请日：2020-02-11
发明人： David J. White
摘要： A compaction control system for and methods of accurately determining properties of compacted and/or existing ground materials. The compaction control system includes a compaction machine that further includes a vibratory drum (or roller). The compaction machine is equipped with sensors to determine position and heading, vibration amplitudes at selected frequencies, and material type and moisture content information. Further, the compaction control system includes a controller and certain algorithms for processing the sensor information. Namely, a method is provided of using the sensor information to assess the improvement in compaction and then determine whether and/or when further ground improvement solutions are needed.
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公开(公告)号：US11448637B2
公开(公告)日：2022-09-20
申请号：US17108685
申请日：2020-12-01
IPC分类号： G01N33/42 , G01N9/00 , G01N23/00 , A01K15/02 , G01C21/00 , G08B21/02 , G01S5/02 , E02D1/00 , G01D9/00 , G01D21/00 , G06F17/40 , H04W4/80
摘要： A system for locating and tracking an object is provided. The system includes a measuring device configured to determine a property of a paving-related material, a locating device configured to determine a location of the measuring device, a tracking system configured to store tracking information associated with the measuring device and one or more properties determined by the measuring device, and a communications system configured to transfer, to a remote device, the location of the measuring device and the tracking information associated with the measuring device.
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公开(公告)号：US20220057310A1
公开(公告)日：2022-02-24
申请号：US17401579
申请日：2021-08-13
申请人： Tongji University
发明人： LIPING LIU , LIJUN SUN , NING LIU , RUIKANG YANG , HUAILEI CHENG
摘要： The invention discloses a slope one-way loading rutting test device, wherein the upper part of a loading frame is slidably connected with an upper cross beam of a frame through a loading frame rotating assembly, and a variable speed motor and a runner wheel are embedded in the lower part of the loading frame. The variable speed motor is in transmission connection with the runner wheel to realize one-way continuous loading of the runner wheel on a test piece. The lower part of a bearing frame is slidably connected with a lower cross beam of a frame through a bearing frame rotating assembly, a test piece mounting frame and a height adjusting device are sequentially embedded into the upper part of the bearing frame from top to bottom, and the height of the test piece mounting frame is adjusted through the height adjusting device.
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公开(公告)号：US20210293774A1
公开(公告)日：2021-09-23
申请号：US17341115
申请日：2021-06-07
摘要： A method for determining the density and moisture content of porous construction material that is used in the civil construction industry such as aggregate, soil aggregate, type I or II base, or native soil materials that are suitable for shallow foundations. In a first part of the method, porous construction material undergoes physical and electrical testing in the geotechnical laboratory to empirically derive correlations between the electrical and physical properties. In a second part compacted construction material is tested in-situ by deploying field testing apparatus and methods to measure the electrical properties of the porous construction material. The field equipment utilizes the established relationship of the electrical and physical characteristics to calculate the porous construction material density and moisture content. Also disclosed are tools for performing soil tests in trenches, e.g. for pipelines, where the moisture and density of the compacted bedding and backfill materials needs to be tested.
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