• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This dynamic penetrometer (1) comprises a threshing head (3), which is extended by a bar (4) terminated by a tip (5) provided for penetrating into a floor (S), and measuring means for determining the the threshing energy, applied to the threshing head, and driving the tip into the ground. The measuring means are carried in full by the threshing head and are adapted to measure the acceleration and / or the speed of the threshing head.
    公开号:FR3021114A1
    申请号:FR1454251
    申请日:2014-05-13
    公开日:2015-11-20
    发明作者:Navarette Miguel Benz；Roland Gourves
    申请人:Sol Solution SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a dynamic penetrometer, a unit for measuring the compactness and the bearing capacity of a soil comprising a dynamic penetrometer. such as a penetrometer, as well as a method for determining the compactness and bearing capacity of an associated soil. It is known to use a dynamic penetrometer for the recognition of surface soils, and more specifically for the control of the compactness or the lift of the soil layers of different earthworks. A dynamic penetration test consists of penetrating the soil, by threshing, a string of rods or metal tubes with a conical tip. A light dynamic dynamic penetrometer with constant energy is a relatively simple construction apparatus, consisting of a test bar whose lower end is provided with a conical tip whose apex angle varies from 30 to 900, which is provided to penetrate the soil. At the upper end of the test bar, the lightweight dynamic penetrometer is provided with an anvil provided to receive repeated impacts of a threshing mass which slides along a guide bar.
    [0002] Threshing, that is, driving the conical tip into the ground, is achieved by raising and then dropping the threshing mass repeatedly. The threshing mass falls from a fixed height, and thus provides the penetrometer with constant energy. The threshing weight of light dynamic penetrometers is generally less than or equal to 10 kg. The average height of fall is of the order of 55 cm. The threshing energy is therefore of the order of 50 J. To exploit the results of such a test, one generally records the number of strokes necessary to drive the conical tip of a given depth. This depth is measured by the operator using measurement marks on the test bar or simply using a meter or ruler.
    [0003] The use of such a penetrometer is relatively tedious, because it is necessary to count the number of strokes necessary to drive the tip of a given height, and note this result on a so-called sheet "site". In addition, the vertical resolution of the measurements is very limited because the number of shots is raised only every 10 or 20 cm of depression.
    [0004] US-A-2007/0277598 discloses a light dynamic penetrometer with constant energy in which the measurement of the depression of the conical tip is automated by means of a laser beam measuring the depth of penetration into the ground. This facilitates the dynamic penetration test by automating the measurement of the depression. However, the time to set up a test using such a penetrometer is relatively high, and the test is limited to a constant threshing energy, since it is not expected to measure the speed or the height of fall of the mass. In addition, the reliability of the test is limited since it is possible to drop the threshing mass with a drop height lower than the expected height. Furthermore, the use of constant threshing energy is problematic in the case of soft soils, because the threshing energy is relatively high and the depression at each shot is relatively high. As a result, the accuracy of the measurement and the interpretation of the values obtained are degraded. In the case of steep soils, threshing energy is insufficient to drive the point into the soil, and therefore the test can not be carried out. Variable energy dynamic penetrometers are an alternative to dynamic constant energy penetrometers. The threshing energy is produced by an operator who hits the penetrometer with a mallet, and the impact force varies according to the hardness of the soil. Strain gauges or other similar measuring devices, installed in the anvil of the penetrometer, make it possible to measure the energy of threshing provided for each strike. An electronic box equipped with an encoder records the depression for each strike, thanks to measuring means arranged on the ground. Such a penetrometer is disclosed in FR-A-2,817,344. The main constraint of variable energy dynamic penetrometers is their initial price, which is high. Furthermore, the installation time before the completion of a test is high because it is necessary, when setting station, to connect each measuring element to the housing and the acquisition PC. In addition, these penetrometers require at least two measuring sensors, one of which measures the driving energy and the other the driving depth, which makes them complex, expensive and restrictive. It is these drawbacks that the invention intends to remedy more particularly, by proposing a new dynamic penetrometer of simple construction, making it possible to improve the penetration technique for auscultations of a depth of less than 2 m and having particular applications. in the field of civil, agricultural or military engineering. For this purpose, the subject of the invention is a dynamic penetrometer, comprising a threshing head, which is extended by a bar terminated by a point intended to penetrate into a ground, and measuring means for determining both the energy threshing, applied to the threshing head, and driving the tip into the ground. The measuring means are carried in full by the threshing head and are adapted to measure the acceleration and / or the speed of the threshing head. Thanks to the invention, the dynamic penetrometer is equipped only with means for measuring acceleration and / or speed, for example a single acceleration sensor or a single geophone, which makes it possible to automate and therefore to make reliable the test for measuring the compactness of the soil. The acceleration or speed allows both the energy of threshing and the depression of the point for each stroke. No additional sensors are placed on the floor, which reduces the installation time required to set up the test.
    [0005] According to advantageous but non-obligatory aspects of the invention, such a penetrometer may include one or more of the following technical characteristics, taken in any technically permissible combination: the means for measuring the acceleration comprise at least one accelerometer, in particular of the type piezoresistive or piezoelectric. - The measuring means are housed in a cavity inside the threshing head. The penetrometer comprises a connection element of the measuring means to an analysis station. - An anvil of the threshing head, intended to be impacted, comprises a first damping element interposed between two metal parts of the anvil in order to improve the energy transfer during the impact and to reduce the noise of the impacts of steel-steel type. - The measuring head, the bar and the point are attached during a test. The invention also relates to an assembly comprising such a penetrometer, and to a threshing device comprising means for assembling with the threshing head, the threshing device comprising a guide bar along which a threshing mass slides. intended to impact an impact plate. Advantageously, the threshing mass is equipped with a second damping element, intended to impact the impact plate, in order to improve the energy transfer during impact and to reduce the noise of steel-steel impacts. . Advantageously, the impact plate is equipped with a third damping element for the impact of the threshing mass. The invention also relates to a system that comprises such a penetrometer or such an assembly, as well as means for processing a measurement signal supplied by the measuring means for determining the driving energy, the acceleration, the speed and depression of the point in the ground.
    [0006] The invention further relates to a method for measuring the compactness and bearing capacity of a soil by means of such a penetrometer, such a set or such a system, the method comprising: a step of calibration of the measuring means, a measuring step, in which a dynamic penetration test is carried out, processing means recording a signal delivered by the measuring means, a calculation step in which the processing means determine the least one parameter relating to the compactness of the ground, from the signal delivered by the measuring means. Advantageously, in the calculation step, the processing means calculate the threshing energy and the depression of the tip in the ground from the signal supplied by the measuring means. The threshing energy and the depression are used by the processing means to calculate at least one parameter relating to the compactness of the ground.
    [0007] The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of a dynamic penetrometer, a measuring assembly and an associated method according to the invention. , given solely by way of example and with reference to the appended drawings, in which: - FIG. 1 is an exploded perspective view of a measurement set of the compactness of a floor, comprising a dynamic penetrometer and a measuring device; threshing according to the invention; FIG. 2 shows a mallet intended to be used with the penetrometer, when the threshing device is not used; FIG. 3 is a view on a larger scale of a tip forming part of the penetrometer of FIG. 1; - Figure 4 is a variant of the tip of Figure 3; FIG. 5 is a section of a measurement head of the penetrometer of FIG. 1; - Figure 6 is a section of a mass forming part of the threshing device of Figure 1; - Figure 7 is a section of a threshing column forming part of the threshing device of Figure 1; - Figure 8 is a sectional view of the assembly of Figure 1, in assembled configuration; and FIGS. 9 to 12 are graphs showing the evolution of parameters determined from measurements made by means of the penetrometer or the measuring assembly, relating to the compactness of the ground.
    [0008] FIG. 1 shows an assembly 10 for measuring the compactness of a soil S, which comprises a dynamic penetrometer 1, and a threshing device 2 designed to be assembled, optionally with the penetrometer 1. When the penetrometer 1 is used without the threshing device 2, it is a variable energy penetrometer and a mallet 8 shown in FIG. 2 is provided for impacting the penetrometer 1. When the threshing device 2 is assembled with the penetrometer 1, the The assembly 10 thus formed constitutes a dynamic energy penetrometer with constant energy, represented in FIG. 8 in assembled configuration. The mallet 8 is then not used.
    [0009] The penetrometer 1 extends along a first longitudinal axis X1, positioned vertically when the penetrometer 1 is used to perform a penetration test in horizontal soil S. In the following, the terms "lower", "upper", "lower" , "Up", "below" and "above" are defined with respect to this standard use orientation of the penetrometer 1, which corresponds to the orientation of FIGS. 1 and 3 to 8. The penetrometer 1 comprises a threshing head 3 whose lower end E3b is extended by a bar 4. A lower end E4b of the bar 4 is extended by a conical tip 5 intended to penetrate into the ground S. FIG. 5 shows in more detail the threshing head 3, which comprises a body 304 of generally cylindrical shape and circular section, centered on the axis X1. Gripping means, namely a handle 303, are assembled to the body 304 and allow an operator to hold the penetrometer 1, or the assembly 10 when the threshing device 2 is used, in the desired position to perform the test. .
    [0010] The lower end E3b of the threshing head 3 comprises an orifice 313 which comprises a first part 302, forming means for assembling the threshing head 3 with the bar 4, in which is housed an upper end E4a of the bar 4. The first portion 302 of the orifice 313 opens on the lower end E3b of the threshing head 3, and is extended upwards by a second portion 310 of the orifice 313, of smaller diameter, which forms means fixing the bar 4. The fixing of the bar 4 with the threshing head 3 is performed by screwing, clipping or pinning. The body 304 of the threshing head 3 comprises a cavity 314 which opens upwards, centered on the axis X1. Means for measuring the acceleration and / or the speed, for example a single accelerometer 305 and / or a single geophone, are located inside the cavity 314. It may be for example an accelerometer miniature, such as a piezoresistive or piezoelectric accelerometer. The accelerometer 305 measures the acceleration of the penetrometer 1 along the axis X1. The accelerometer 305 is attached to the measuring head, for example by gluing or screwing. The speed measuring sensor measures the speed of the penetrometer 1 along axis X1.
    [0011] The following description relates to the embodiment in which a single accelerometer is used. The cavity 314 has an outlet orifice 312 oriented radially, opening on the outside of the head 3, through which extends an electric cable 315 connected to a connecting element 309 fixed for example at the free end of the handle 303. The connection element 309 allows the electrical connection of the penetrometer 1 to means for processing a signal supplied by the accelerometer 305, for example an analysis station 9, such as a smart phone, a personal computer or tablet. The connection between the connection element 309 and the analysis station 9 is wired and is performed for example by means of a USB cable, or wireless, for example by WIFI or Bluetooth waves. The upper opening of the cavity 314 of the threshing head 3 is closed by a lower portion 306 of an anvil 316. A first damping element 307 is interposed, along the axis X1, between the first portion 306. anvil 316 and a second portion 308 of the anvil 316, also called "helmet". The parts 306 and 308 are made for example from a metal alloy such as an alloy of steel or aluminum. The first damping element 307 is made for example from rubber, plastic, polyurethane or springs. The damping element 307 makes it possible to damp the vibrations transmitted during the impact, which increases the duration of the shock and reduces the high frequencies of the vibrations causing the noise in a steel-steel type impact. The head 3 is equipped with fixing means of the threshing device 2 on the penetrometer 1, for example orifices 311 oriented radially and offset along X1. A first orifice 311 is formed in the body 304, and a second orifice is formed in the damping element 307. FIG. 2 shows the mallet 8, which is intended to impact the penetrator 308 helmet 1. The mallet 8 comprises a handle 81 extended by a massive head 82, made for example from a metal alloy and having in its ends plastic tips, rubber or polyurethane Figure 3 shows in more detail the conical tip 5 of the penetrometer. The tip 5 comprises an attachment portion 51 adapted to be connected to a tip holder located at the lower end E4b of the bar 4. The fixing portion 51 is extended downwardly by a frustoconical intermediate portion 52, which flares downward away from the attachment portion 51. A tapered portion 53 extends the intermediate portion 52 downward, affixed to the attachment portion 51, and has a pointed end E5b which enters the soil S first during a test. The angle at the apex of the conical portion 53 is preferably a. The angle a is preferably between 30 ° and 90 °. The penetrometer 1 is a monoblock device during a test, that is to say that the head 3, the bar 4 and the tip 5 are fixed to each other by default, so that during a test, no operation prior assembly is required. Apart from the tests, it is possible to disassemble the head 3, the bar 4 and the tip 5. FIG. 4 shows a tip 5 'intended to be assembled to the bar 4 in place of the point 5. The intermediate portion 52 5 'is cylindrical in shape with a circular section and is extended upwards by an attachment portion 51' similar to the attachment portion 51 of the tip 5. A conical portion 53 'extends the intermediate portion 52' to the bottom, and has a pointed end E'5b. It is noted at the apex angle of the conical portion 53 '. Preferably, the angle a 'is between 30 ° and 90 ° The threshing device 2 comprises a mass 6 movable in translation, provided to slide along a threshing column 7 extending along a second longitudinal axis X2. When the threshing device 2 is assembled with the penetrometer 1, the axes X1 and X2 are aligned and there is obtained a set 10 for measuring the compactness of the ground S, shown in FIG. 8, equivalent to a constant energy dynamic penetrometer. The mallet 8 is then replaced by the mass 6 to achieve the impacts.
    [0012] The mass 6, shown in Figure 6, is of generally cylindrical shape with circular section, and is centered on the axis X2. Note E6b, a lower end of the mass 6, formed by a second damping element 61 made for example from rubber or a plastic material. A body of mass 62, made for example from a metal alloy such as a steel or an aluminum alloy, is fixed to the second damping element 61 by means of fastening elements 64, such as screws . The mass 6 is traversed right through by a central bore 65 centered on the axis X2. Note E6a, an upper end of the mass 6, formed by second gripping means 63 constituted by a peripheral flange which projects radially outwardly.
    [0013] FIG. 7 represents the threshing device 2 not equipped with the mass 6. A guide bar 703, centered on the axis X2, comprises an upper end provided with a drop raising 702 formed by a disk making it possible to limit the movement. translation of the mass 6 along the guide bar 703, upwards. The guide rod 703 is received in the central bore 65 of the mass 6. The drop raiser 702 is extended upwardly by a handle 701, allowing the user to hold the assembly 10 during the production of A try. The lower end of the guide bar 703 is attached to a disk-shaped impact plate 707 by fastening means 704 formed by an orifice formed in the upper face of the impact plate 707. The attachment of the 703 on the impact plate 707 is carried out for example by means of screws and / or elastic pins. The upper face of the impact plate 707 is equipped with a third disc-shaped damping element 705, the center of which is pierced with a hole for the passage of the guide bar 703. Fastening elements such as screws 706 are used to fix the third damping element 705 on the impact plate 707. The lower face of the impact plate 707 is connected to a housing 709 which delimits a cavity 708 open downwards, of complementary shape to that of the upper part of the threshing head 3. When the penetrometer 1 is assembled with the threshing device 2, the head 3 is partially housed in the cavity 708 and the helmet 308 is supported at the bottom of the housing 709. fastening means 710 such as screws are inserted into radially oriented orifices of the housing 709, so as to maintain the position of the threshing head 3 in the housing 709. The screws 710 are designed to cooperate with each other. with the holes 311 of the threshing head 3.
    [0014] The operation is as follows. When the penetrometer 1 is used without the threshing device 2, it is a dynamic penetrometer with variable energy. The impacts are made by means of the mallet 8, which is used to strike the helmet 308 of the threshing head 3. When the penetrometer 1 is used in combination with the threshing device 2, the assembly 10 thus formed constitutes a dynamic penetrometer. constant energy. The impacts are made by lifting the mass 6, with the aid of the gripping means 63, until the mass 6 abuts against the raising of fall 702. Then, the operator releases the mass 6, which slides downwardly along the guide bar 703 until the damping element 61 of the mass 6 impacts the damping element 705 disposed over the impact plate 707. The contact between the damping elements 61 and 705 generates a shock that is attenuated, which improves the measurements. The drop height is set by the distance between the drop riser 702 and the damping element 705, which is constant. Therefore, the impact energy is also constant. When carrying out a variable or constant energy test, for each impact given during threshing by means of the mallet 8 or the mass 6, the accelerometer 305 measures the acceleration a (t) of the penetrometer 1 as a function of the time, at a given sampling frequency. This signal a (t) is transmitted to the analysis station 9 by the connection element 309. The analysis station 9 processes the signal a (t), stores it and calculates parameters relating to the compactness of the ground S, which are displayed in the form of penetrograms on a screen of the analysis station 9. Prior to the penetration tests, a calibration procedure is carried out once in order to calibrate the accelerometer 305, using a pendulum of threshing whose mass is equal to that of the mallet 8 used. The threshing pendulum is used by orienting the penetrometer horizontally, and striking the headset 308 of the threshing head 3 by means of the pendulum. The calibration procedure produces calibration data for the mallet 8 used, indicating threshing energy as a function of the maximum acceleration (a (t)).
    [0015] In the case of the constant energy penetrometer, the threshing energy is known and the calibration is superfluous. In a penetration test, the impact force F (t) and the threshing energy Eb (t) are calculated in a first calculation step, from the signal a (t) provided by the accelerometer 305. and calibration data: F (t) = AO.ap, c (t) + BO (relation 1) Ai 1 MV2 Eb (t) = Bi 2 + Cl (relation 2) with: - a (t) l peak acceleration measured by the accelerometer 305 during the impact, that is to say the maximum acceleration, - M the mass of the mass 6 or the mallet 8, previously recorded in a memory of the analysis station 9, - V the impact speed of mass 6 or mallet 8 which is an exponential function of force Fp, c (t). The constants A0, A1, BO B1 and C1 are determined beforehand during the calibration procedure.
    [0016] The signal a (t) is also used by the analysis station 9, in a second calculation step, to determine the driving distance s (t) of the tip 5 in the ground S, and the driving speed S v (t) of the tip 5 in the soil S, for each impact. This calculation is performed by integrating once or twice the signal a (t), as a function of time or frequency. In a third step, the analysis station 9 displays the results in the form of a penetrogram, such as that represented in FIG. 9, showing the evolution of a first parameter relating to the compactness of the soil S, namely the peak resistance qd, as a function of the penetration depth s of the tip 5 in the ground S. In a conventional manner, a mathematical formula, called the Dutch formula, makes it possible to calculate the peak resistance qd from the threshing energy Eb: Eb M = A c. e M + P) (relation 3) with - qd the peak resistance, that is to say the effort of the ground on the tip 5 when driving a conical tip. - Eb the threshing energy, determined previously, - Ac the projected section of the conical portion 53 of the tip 5, - e the depression of the tip 5 after each impact, which is a value of the driving distance s (t) - M the mass of the mallet 8 or mass 6, - P 'the mass beaten, ie the mass of the penetrometer considered as a whole, namely the mass of the penetrometer 1 in the case of a variable energy test, or the mass of the assembly 10 in the case of a constant energy test.
    [0017] The Dutch formula is used to interpret the recordings from a test, and to evaluate the hardness of the soil S, that is to say, its bearing capacity. FIG. 10 shows a second example of a penetrogram, which indicates a second parameter relating to the compactness of the ground, namely the number of mallet strikes N or mass 6, as a function of the penetration depth z of the tip 5. in the ground S. FIG. 11 shows a third example of a penetrogram, which indicates a third parameter relating to the compactness of the ground, namely the Zn depression. FIG. 12 shows a fourth example of a penetrogram, which indicates a fourth parameter relating to the compactness of the ground, namely the variations of a CBR index, as a function of the depth of penetration z of the tip 5 in the soil S. The Californian Bearing Ratio (CBR), a Californian lift ratio, is a layer lift control parameter, according to ASTM 6951. During a test, a screen of the analysis station 9 displays the or the penetrograms obtained in real time, which makes it possible to obtain easily and reliably a parameter relating to the compactness of the soil. The penetrometer 1, or more generally the assembly 10, is equipped only with means for measuring the acceleration, that is to say that it does not include other measuring means, such as measuring means direct of the depth of penetration, for example a laser placed on the ground S. In the example described, it is a single accelerometer 305, but alternatively the penetrometer 1 can incorporate several accelerometers and / or geophones. The accelerometer (s) 305 and the speed measuring sensor (s) are measuring means for determining both the threshing energy Eb (t) and the depression s (t) of the tip 5 in the ground. These measuring means are carried in full by the threshing head 3, no element of these measuring means is placed on the ground or on the mallet 8. The measuring means 305 measure, during a test, only the acceleration a (t) and / or the speed of the penetrometer 1 or the assembly 10, in order to determine the driving energy Eb (t) and the driving s (t). No additional measures, including a measure of the impact force of the mass 6 or the mallet 8, or a direct measurement of the s (t) depression, are required to calculate the threshing energy Eb (t) and the depression s (t), which are calculated solely from the measurement of acceleration and / or velocity, as well as quantities determined during a prior calibration, or by calculation from the acceleration a (t) and / or e velocity v (t). In the case of using a speed measuring sensor instead of the accelerometer, the speed measuring signal is processed by the analysis station 9 to calculate the acceleration, by a mathematical operation of time derivative. The time is known by the analysis station 9, in particular by means of the sampling frequency of the signal. The geometry of the threshing head 3 and the threshing column 7 is specially designed so that the damping elements 307, 61 and 705 dampen the impact of the mallet 8 or the mass 6, which has several advantages, such as as the increase of the duration of the shock and the decrease of the high frequencies on the signal a (t). As a result, signal processing is improved and the noise generated by each shot is reduced compared to steel-to-steel impacts.
    [0018] In the context of the invention, the various variants described can be combined with each other at least partially.
    权利要求:
    Claims (12)
    [0001]
    CLAIMS1.- Dynamic penetrometer (1), comprising a threshing head (3), which is extended by a bar (4) terminated by a tip (5) provided for penetrating into a soil (S), and measuring means ( 305) for determining both the threshing energy applied to the threshing head and the driving of the tip into the ground, characterized in that the measuring means (305) is carried in full by the head of the threshing head. threshing and are suitable for measuring the acceleration and / or speed of the threshing head.
    [0002]
    2. Penetrometer (1) according to claim 1, characterized in that the means for measuring the acceleration (305) comprise at least one accelerometer, in particular of the piezoresistive or piezoelectric type.
    [0003]
    3. Penetrometer (1) according to one of claims 1 or 2, characterized in that the measuring means (305) are housed in a cavity (314) inside the threshing head (3).
    [0004]
    4. Penetrometer (1) according to one of the preceding claims, characterized in that it comprises a member (309) for connecting the measuring means (305) to an analysis station (9).
    [0005]
    5. Penetrometer (1) according to one of the preceding claims, characterized in that an anvil (316) of the threshing head (3), intended to be impacted, comprises a first damping element (307) interposed between two metal parts (306, 308) of the anvil (316).
    [0006]
    6. Penetrometer (1) according to one of the preceding claims, characterized in that the measuring head (3), the bar (4) and the tip (5) are monobloc in a test.
    [0007]
    7.- assembly (10), characterized in that it comprises a penetrometer (1) according to one of the preceding claims, and a threshing device (2) comprising means (708, 709, 710) of assembly with the threshing head (3), the threshing device (2) comprising a guide bar (703) along which slides a threshing mass (6) provided for impacting an impact plate (707).
    [0008]
    8. An assembly (10) according to claim 7, characterized in that the threshing mass (6) is equipped with a second damping element (61), intended to impact the impact plate (707).
    [0009]
    9.- assembly (10) according to one of claims 7 or 8, characterized in that the impact plate (707) is equipped with a third damping element (705) of the impact of the mass of threshing (6).
    [0010]
    10.- System, characterized in that it comprises a penetrometer (1) according to one of claims 1 to 6 or an assembly (10) according to one of claims 7 to 9, and means (9) of processing a measurement signal provided by the measuring means (305) for determining the driving energy and driving the tip (5) into the ground (S).
    [0011]
    11.- method for measuring the compactness of a soil by means of a penetrometer (1) according to one of claims 1 to 6, an assembly according to one of claims 7 to 9 or a system according to claim 10, characterized in that it comprises: - a calibration step of the measurement means (305), - a measuring step, in which a dynamic penetration test is carried out, processing means (9) recording a signal delivered by the measuring means (305), - a calculation step in which the processing means (9) determines at least one parameter relating to the compactness of the ground, from the signal delivered by the measuring means ( 305).
    [0012]
    12.- Method according to claim 11, characterized in the calculation step, the processing means (9) calculate the driving energy and the depression of the tip (5) in the ground (S) from the signal provided by the measuring means (305) and in that the threshing energy and the depression are used by the processing means to calculate at least one parameter relating to the compactness of the ground (S).
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    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE202005018879U1|2005-11-28|2006-02-16|Zorn, Bernd|Ground material shock load deformation test unit has load plate with battery operated sensor using wireless data transmission|
    DE102007035348A1|2007-07-27|2009-02-05|Bernd Zorn|Drop weight test device for determining deformation variables under selected impact load from grounds, has load plate for supporting test plane, sensor unit coupled at load plate and load unit consists of guide rod|
    WO2013124426A1|2012-02-23|2013-08-29|Sol Solution|Measuring head intended to be fitted to a dynamic penetrometer and method of measurement using such a measuring head|
    FR2817344B1|2000-11-28|2003-05-09|Sol Solution|DYNAMIC PENETROMETER WITH VARIABLE ENERGY|
    US20070277598A1|2006-06-06|2007-12-06|Zacny Krzysztof A|Penetrometer with electronically-controlled hammering module|CN108318326B|2018-01-19|2020-11-20|浙江大学|Miniature static sounding probe rod|
    US11178818B2|2018-10-26|2021-11-23|Deere & Company|Harvesting machine control system with fill level processing based on yield data|
    US11240961B2|2018-10-26|2022-02-08|Deere & Company|Controlling a harvesting machine based on a geo-spatial representation indicating where the harvesting machine is likely to reach capacity|
    US11079725B2|2019-04-10|2021-08-03|Deere & Company|Machine control using real-time model|
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    CN110196211A|2019-06-10|2019-09-03|中国海洋大学|A kind of rate related coefficient measuring method for free-falling formula penetration technology|
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    2015-11-20| EXTE| Extension to a french territory|Extension state: PF |
    2015-11-20| PLSC| Search report ready|Effective date: 20151120 |
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    优先权:
    申请号 | 申请日 | 专利标题
    FR1454251A|FR3021114B1|2014-05-13|2014-05-13|DYNAMIC PENETROMETER, MEASUREMENT ASSEMBLY, SYSTEM AND METHOD FOR DETERMINING THE COMPACTNESS AND SOIL CAPACITY OF A SOIL|FR1454251A| FR3021114B1|2014-05-13|2014-05-13|DYNAMIC PENETROMETER, MEASUREMENT ASSEMBLY, SYSTEM AND METHOD FOR DETERMINING THE COMPACTNESS AND SOIL CAPACITY OF A SOIL|
    EP15167264.9A| EP2944725A1|2014-05-13|2015-05-12|Dynamic penetrometer, measurement unit, system and method for determining the compactness and bearing capacity of a floor|
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