• 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:
    The invention relates to a pressure gauge (1) comprising a dial (4) bearing a marking (5, 9) and a pressure indicator (6) movable in rotation (7) with respect to said dial (4), the indicator of pressure (6) coming, during its rotations, changing orientation and / or position relative to said marking (5, 9). The marking (5, 9) comprises a two-dimensional matrix code (9) encoding at least one given information. The invention also relates to a valve block for distributing fluid, in particular gas, comprising such a manometer (1), as well as a fluid distribution assembly, in particular gas, comprising a gas container, such as a gas cylinder, which is fixed such a fluid distribution valve block equipped with such a pressure gauge. In another aspect, the invention also relates to a method for measuring the pressure displayed by a manometer.
    公开号:FR3018606A1
    申请号:FR1452138
    申请日:2014-03-14
    公开日:2015-09-18
    发明作者:Philippe Bernard；Philippe Deck；Michele Quattrone
    申请人:Air Liquide SA；LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude；
    IPC主号:
    专利说明:

    [0001] The invention relates to a pressure gauge comprising a dial bearing a two-dimensional matrix code type marking and a pressure indicator, such as a needle, rotatable about to be positioned relative to said marking, and a pressurized fluid container, such as a gas cylinder, equipped with a dispensing valve to which is attached such a pressure gauge, and a method for determining the pressure measured by said manometer. Industrial and medical gases are commonly packaged in gas containers, typically gas cylinders, equipped with a valve block, with or without built-in expansion valve, namely a single tap open / closed type or an integrated valve regulator, also called RDI, to control flow and pressure of the delivered gas. In order to measure the pressure of the gas in the container and thus to be able to determine whether the container still contains gas or not, it is usual to arrange on the valve block, a pressure measuring device, typically a moving needle pressure gauge. rotation.
    [0002] Such a pressure measuring device displays the pressure of the gas on a dial bearing graduations corresponding to pressure values in relation to which the rotating needle is positioned under the effect of the pressure of the gas to indicate a measured pressure value. In particular, the aneroid gauges use the elasticity of a metal part whose deformation by the fluid under pressure, for example the deflection of a diaphragm or the variation of curvature of a wound tube, such as a Bourdon tube, allows to accurately determine the pressure difference applied, therefore the pressure of the fluid. The user can then read the gas pressure in a given bottle by observing the pressure value corresponding to the graduation designated by the needle.
    [0003] He can possibly manually record it in a database in a way associated with the bottle in question. However, when the user has to manage a park comprising several gas containers, typically several tens or hundreds of gas cylinders, he must repeat the operation on all the containers of the park, which is very quickly tedious and takes time. as much time as the number of containers is high. In other words, managing a fleet of gas containers operated in this way is not ideal.
    [0004] The problem that arises is to improve the mechanical pressure measuring devices with moving indicator, typically a rotary needle pressure gauge, so as to be able to perform an automated reading of the measured pressure value, and to associate, or even memorize then, this pressure value measured at a given gas container, typically a gas cylinder equipped with a valve block on which is arranged said pressure measuring device, advantageously in combination with other useful information, such as the type of gas gas contained in the container considered, its limit of use, the name of the supplier ..., and this, in order to improve the overall management of a fleet of gas containers, typically gas cylinders.
    [0005] The solution of the invention is a manometer comprising a dial bearing a marking and a pressure indicator movable in rotation relative to said dial, the pressure indicator, during its rotations, changing orientation and / or position relatively aududit marking, characterized in that the marking comprises a two-dimensional matrix code encoding at least one given piece of information.
    [0006] Depending on the case, the pressure gauge of the invention may comprise one or more of the following technical characteristics: the matrix code comprises geometric shapes. - the matrix code includes disks. the matrix code comprises polygons, in particular squares. - The matrix code includes geometric shapes of dark color arranged on a background of light color. - The geometric shapes are black squares and the light colored background is a white square. the matrix code is of the QR code type. - the dial is circular. the geometric shapes are discs of contrasting color relative to the color of the bottom of the manometer, for example of black and white colors. - The geometric shapes are disks distributed over at least a portion of the periphery of the circular dial. - The mobile rotating pressure indicator is a needle. the pressure indicator is a long, dark colored needle, in particular black. - The axis of rotation of the pressure indicator is located at the center of the dial. - the dial and the pressure indicator are protected by a window. - It comprises a housing comprising a resilient mechanism responsive to the pressure cooperating with the pressure indicator movable in rotation, for example the elastic pressure-sensitive mechanism is a Bourdon tube or a diaphragm. - The dial includes graduations allowing a direct reading of the pressure by the user, without the matrix code is a hindrance to reading with the naked eye. the dial comprises at least one graphic element serving as a reference position making it possible to position the pressure indicator, ie the needle, in the space, ie a sign or a marking acting as a reference anchor on the dial for determining an angular position of the pressure indicator with respect to this graphic element and to deduce a gas pressure and possibly a battery life thereafter. it comprises at least one graphic element situated at the top of the dial, for example a dot or a line.
    [0007] The invention also relates to a fluid distribution valve block, in particular gas, comprising a manometer according to the invention, preferably an integrated pressure regulator valve block. The invention also relates to a fluid distribution assembly, in particular gas, comprising a gas container, such as a gas cylinder, to which is fixed a fluid distribution valve block equipped with a pressure gauge, characterized in that the fluid distribution valve block is a valve block according to the invention. Preferably, the valve block is protected by a protective cover. Such a fluid dispensing assembly and / or such a valve block are perfectly suited for use in dispensing pressurized fluid, in particular gas at a pressure of up to 350 bar, or more. Furthermore, the invention also relates to a method for measuring the pressure displayed by a manometer according to the invention, equipping a fluid distribution valve block arranged on a gas container, in which one proceeds according to the steps of: a) performs an acquisition of at least one raw image of the manometer dial, said at least one raw image comprising the matrix code and the mobile pressure indicator, b) said at least one raw image is processed to decode said at least one given information encoded by the matrix code, c) processing said at least one image to detect the position and orientation of the matrix code defining said at least one given information, d) comparing the raw image obtained in step a ) to the position and orientation information of the matrix code obtained in step c) to deduce an area of interest from the pressure indicator on the dial in said at least one image obtained in step c, e ) the information obtained in steps c) and d) is processed to deduce the position of the pressure indicator with respect to the matrix code, and f) a pressure value measured by the pressure indicator is deduced from the position of the pressure indicator; the manometer. Depending on the case, the method of the invention may comprise one or more of the following technical characteristics: the raw image acquisition of step a) is carried out using a digital reading device, in particular a device including a camera. steps b) to f) are implemented by a microprocessor and software. said at least one image is analyzed using one or more mathematical pattern recognition algorithms to determine the position of the dial and / or the pressure indicator, ie the needle . in step e), the image representing the position of the pressure indicator on the dial is compared with stored images each corresponding to a given pressure value. it furthermore comprises a step of memorizing at least one given piece of information encoded by the matrix code of the marking, the determined pressure value, the date of the reading, the information making it possible to know the reading terminal and its geolocation. it comprises a step of displaying the determined pressure value and at least one given information encoded by the matrix code of the marking. - The digital reading device is a smartphone or digital tablet incorporating a camera and a data display screen. at least one piece of information encoded by the marking matrix code is stored and / or displayed in association with a pressure value determined in step f). it furthermore comprises a step of displaying the determined pressure value and at least one given piece of information encoded by the matrix code of the marking. it furthermore comprises a step of displaying the quantity of gas remaining in the bottle obtained by the combination of the information present or deduced in the matrix code and the value of the pressure. - It further comprises a step of displaying the amount of gas consumed from the bottle, deduced from readings of the same gauge made at different times. it further comprises a step of displaying the remaining range of the bottle, deduced from the pressure read and the typical values of the flow rate of the gas contained in the bottle (the flow rate value is entered by the user or deduced by difference from a prior reading, for example - the digital reading device is a smartphone or digital tablet incorporating a camera and a data display screen - at least one given information encoded by the code marking matrix is a gas bottle reference, a unique identification number, a user name, a gas type, a gas composition, a website link, a gas supplier name, a capacity of the bottle, an expiry date of the gas stored in the bottle, a telephone number to contact in case of problem - at least one given information encoded by the marking matrix code is memo reated and / or displayed in association with a pressure value determined in step e). The invention will now be better understood by means of the following detailed description, given by way of illustration but without limitation, with reference to the appended figures in which: FIG. 1 represents a manometer according to the prior art, FIG. first embodiment of a manometer according to the invention, - Figure 3 shows a second embodiment of a pressure gauge according to the invention, - Figure 4 schematizes the main steps of the method according to the invention for measuring the pressure displayed by pressure gauge in Figure 3, - Figure 5 illustrates the acquisition of the pressure gauge dial image in Figure 2 by means of a smartphone, and - Figure 6 illustrates the pressure display. measured and other useful information on the display screen of a smartphone. Figure 1 shows a manometer 1 according to the prior art used to measure the pressure of a fluid under pressure, in particular a gas, stored in a container, such as a gas cylinder. Typically, the manometer 1 is fixed, in particular fixed by screwing via a threaded fastener 3 carried by the casing 2, on a valve block, with or without integrated expansion valve, itself mounted on the fluid container so as to be able to measuring the pressure of the fluid from the container and passing through said valve block.
    [0008] Such a manometer 1 is formed of a housing 2 containing an internal elastic mechanism (not visible) sensitive to pressure cooperating with a pressure indicator movable in rotation, namely generally a needle 6 movable in rotation about an axis 7 of rotation usually located in the center of a disc-shaped dial 4, that is to say circular periphery, bearing graduations 5 corresponding to pressure values, namely here pressure values between 0 and 250 bar . The pressure is taken at the tip 3. Typically, the pressure of the gas measured by the manometer 1 can be read by the user on the dial 4 since the rotating needle 6 is positioned, under the effect of the pressure of the fluid, vis-à-vis the graduation 5 corresponding to the pressure value of said fluid. The dial 4 and the needle 6 are protected by a transparent window 8 covering them. The window 8 is fixed to the housing 2. The elastic pressure-sensitive mechanism is for example a Bourdon tube or a diaphragm. This type of elastic mechanism usually equips the aneroid manometers that use the elasticity of a metal part whose deformation by the fluid under pressure, for example the deflection of a diaphragm or the variation of curvature of a wound tube, such a Bourdon tube, allows to determine faithfully the pressure difference applied, therefore the pressure of the fluid. This type of manometer 1 according to the prior art does not allow easy park management and has other disadvantages, in particular: the accuracy of the pressure reading depends on a good understanding and interpretation of the graduations inscribed on the bottom pressure gauge on the part of the operator. the measured value (often expressed in bar) does not have an immediate meaning for the user, who generally wishes to know the remaining gas autonomy of the bottle (expressed in time units, for example in hours and minutes) or the consumption of gas for a fixed period. This information must be found by calculation from the read pressure value. It is easy to understand that reading, interpretation and / or calculation errors can occur with this type of manometer 1 of the prior art. Figures 2 and 3 show two embodiments of a manometer 1 according to the invention. The manometers 1 shown schematically in Figures 2 and 3 have the same overall architecture and operate in the same manner as that of Figure 1. The same references in Figures 1, 2 and 3 also refer to the same elements. In general, the pressure gauge 1 of FIGS. 2 and 3 comprises, regardless of the embodiment considered, a dial 4 bearing a marking 5, 9 and a pressure indicator movable in rotation about the axis 7, namely a long needle 6, and with respect to said dial 4. The pressure indicator 6 and the dial 4 are protected by a transparent pane 8. The pressure of the gas is measured by the internal elastic mechanism which cooperates with the needle 6, as explained above, and this pressure measurement is then displayed by the needle 6 which rotates under the effect of pressure and is positioned relative to the marking 5, 9 to indicate a pressure value corresponding to the pressure of the fluid in the container on which is mounted the valve block carrying the manometer 1 of the invention. The pressure indicator 6 is a slender needle of dark color, especially black. According to the invention, the marking 5, 9 comprises a matrix code 9 in two dimensions encoding at least one given information. The matrix code 9 comprises geometric shapes, namely here a multitude of disks 10 or squares 10 of small dimensions, the organization and number of which encode one or more given information. In the embodiment of FIG. 2, the geometrical shapes 10 are discs, of black and white color, distributed on the periphery of the dial 4. There is also the presence of a graphic element 13, here at the top of the dial 4, serving as a reference position for positioning the pressure indicator 6, that is to say the rotating hand, on the dial and thus to determine an angular position of the pressure indicator 6 with respect to this graphical element 13 to deduce a gas pressure and possibly autonomy then, as detailed below. This graphic element 13 is for example a point or a line. In the embodiment of FIG. 3, the geometric shapes 10 are squares of small size and of black color which are distributed on a background of square shape and of contrasting color relative to the colors of the bottom of the dial, typically a square of white or black color. Typically, the matrix code 9 is here of the QR code type. The information or data encoded by the matrix code 9 of the marking 5, 9 corresponds for example to a gas bottle reference, a user name, a gas type, a gas composition, a link to a website, a gas supplier name, expiry date of the gas stored in the bottle, a telephone number to contact in case of problems or any other useful information. The matrix code 9 can be printed, glued, screen printed or deposited by any other technique on the dial 4. It is particularly advantageous to have such a matrix code 9 on the dial 4 of the manometer 1 because it facilitates the management of the bottles of bottles. gas and to have more information about the different bottles than just the pressure read by the user. In addition, this makes it possible to automate the reading of the pressures and to be able to associate them, without risk of error, with one or other useful information, such as those mentioned above, and preferably to store them thus associated with one another or other. In addition, this makes it possible to use the communication functions of a smartphone or a touch pad to transmit information read and retrieved locally to remote servers. Further computer processing will make it possible to process and make available these data in a form that is advantageous to the user, such as a simplified view of the bottle stock. A measurement of the pressure displayed by the pressure gauge 1 of FIG. 2 or 3 can be performed in an automated manner and associated with one or other information according to the method explained hereinafter. As an illustrative example and for ease of understanding, reference is made hereinafter to the manometer 1 with dial 4 carrying a code code 9 of the QR code type as illustrated in FIG. 3. The steps of the method are illustrated on FIG. Figure 4
    [0009] Firstly, an acquisition (steps A and B) of a raw image or several raw images of the dial 4 of the manometer 1 of FIG. 3 is performed, which image or which raw images include the matrix code 9 and the indicator mobile pressure, that is to say the needle 6 positioned opposite said matrix code 9.
    [0010] This (or these) raw image is processed (step C) to decode the information INFO (or information) encoded (s) by the matrix code 9. The position of the needle 6, which could be superimposed on certain information of the matrix code 9, does not interfere with the decoding of the INFO information by the use of image recognition and data reconstruction techniques which are specific to the matrix code encoding technology 9 and which are known to every man of career. In addition, the detection of the matrix code 9 also allows the precise knowledge of the position and the orientation of the matrix code 9 in the image or the raw images, and makes it possible to easily select within the image, the zone d interest including the needle 6 and reconstruct its positioning in space, that is to say its angular positioning on the dial 4. Then operates one or more image recognition and recognition algorithms , which are well known to those skilled in the art, so as to detect, in the area of interest, the position and the orientation of the needle 6 on the dial 4. For example, but not exhaustively, one can: - operate an edge recognition algorithm of the area of interest, followed by a Houg transform, thus detecting the predominant direction of the recognized contours; - or operate an edge recognition algorithm, followed by the detection of the maximum value from a polar coordinate transformation centered on the area of interest; or else subtracting the virtual image of the raw image to remove the geometric composition corresponding to the encoded INFO information and thus obtain only the image of the position of the needle 6 on the dial 4, which is then compared with a reference image. Finally, the position and orientation of the needle 6 on the dial 4 is compared with the position and the orientation of the matrix code 9 to deduce a pressure value measured by the manometer 1.
    [0011] For example, the treatment of the image of the position of the needle 6 can be compared to a reference angular position to determine an angle α, for example here 47 °, which angle α itself being used to deduce a pressure value, for example 200 bar, from a predefined correspondence table or the like corresponding values of angles a and corresponding pressure values. Such a table of correspondences can be easily established via simple empirical tests. It is then stored and can be recalled to carry out said comparison. As illustrated in FIG. 5, the acquisition of the raw image of the dial 4 of the manometer 1 is preferably carried out by means of a digital reading device 11, in particular a device including a camera, such as a smart phone or a digital tablet, equipped with a camera and implementing a matrix code reading application, including QR code, for example a QR DROIDTM type application running AndroidTm environment.
    [0012] For example, the steps of the above-described method have been implemented on a smart phone operating AndroidLm 'environment and using software based on an image processing library, such as OpenCVTM The value of The pressure thus determined can then be stored, preferably associated with the (or) information encoded by the matrix code 9 and decoded as explained above. Of course, all or part of the information, images or other data can be stored and / or displayed on a data display screen, such as the screen 12 of a digital reading device 11, such as a smartphone or tablet. as shown in Figure 6. 25
    权利要求:
    Claims (17)
    [0001]
    REVENDICATIONS1. Manometer (1) comprising a dial (4) bearing a marking (5, 9) and a pressure indicator (6) movable in rotation (7) with respect to said dial (4), the pressure indicator (6), when of its rotations, changing orientation and / or position relative to said marking (5, 9), characterized in that the marking (5, 9) comprises a two-dimensional matrix code (9) encoding at least one given piece of information .
    [0002]
    2. Pressure gauge according to the preceding claim, characterized in that the matrix code (9) comprises geometric shapes (10).
    [0003]
    3. Manometer according to the preceding claim, characterized in that the matrix code comprises geometric shapes (10) selected from disks and polygons, in particular squares.
    [0004]
    4. Manometer according to one of the preceding claims, characterized in that the geometric shapes (10) are disks distributed over at least a portion of the periphery of the dial (4), preferably a dial (4) of circular shape.
    [0005]
    5. Manometer according to one of the preceding claims, characterized in that the pressure indicator (6) movable in rotation is a needle, preferably a longiline needle dark, especially black.
    [0006]
    6. Manometer according to one of the preceding claims, characterized in that the dial (4) comprises at least one graphical element (13) serving as a reference position for positioning the pressure indicator (6) in the space.
    [0007]
    7. Fluid distribution valve block, in particular of gas, comprising a manometer (1) according to one of the preceding claims, preferably a valve block with integrated pressure reducer.
    [0008]
    8. A fluid distribution assembly, in particular a gas container, comprising a gas container to which is attached a fluid distribution valve block equipped with a pressure gauge (1), characterized in that the fluid distribution valve block is a valve block according to claim 7.
    [0009]
    9. Use of a fluid distribution assembly according to claim 8 or a valve block according to claim 7 for dispensing a fluid under pressure, in particular gas.
    [0010]
    10. A method for measuring the pressure displayed by a pressure gauge according to one of claims 1 to 6, equipping a fluid distribution valve block arranged on a gas container, wherein is carried out according to the steps of: a) operates a acquiring at least one raw image of the dial (4) of the manometer (1), said at least one raw image comprising the matrix code (9) and the mobile pressure indicator (6), b) treating said at least one a raw image for decoding said at least one given information encoded by the matrix code (9), c) processing said at least one image to detect the position and orientation of the matrix code (9) defining said at least one information given, d) comparing the raw image obtained in step a) to the position and orientation information of the matrix code obtained in step c) to deduce an area of interest from the pressure indicator on the dial in said at least one image obtained in step c e) the information obtained in steps c) and d) is processed to deduce the position of the pressure indicator with respect to the matrix code, and f) a pressure value is deduced from the position of the pressure indicator. measured by the manometer.
    [0011]
    11. The method of claim 10, characterized in that the raw image acquisition of step a) is operated using a digital reading device, in particular a device including a camera.
    [0012]
    12. Method according to one of claims 10 or 11, characterized in that steps b) to f) are implemented by a microprocessor and software.
    [0013]
    13. Method according to one of claims 10 to 12, characterized in that in step e), the image representative of the position of the pressure indicator on the dial is compared with stored images each corresponding to a given pressure value.
    [0014]
    14. Method according to one of claims 10 to 13, characterized in that it further comprises a step of displaying the determined pressure value and at least one given information encoded by the matrix code marking.
    [0015]
    15. Method according to one of claims 10 to 14, characterized in that the digital reading device is a smartphone or a digital tablet incorporating a camera and a data display screen. 15
    [0016]
    16. Method according to one of claims 10 to 15, characterized in that at least one given information encoded by the marking matrix code corresponds to a gas bottle reference, a user name, a type of gas, a gaseous composition, a website link, a unique identification number, a gas supplier name, a bottle capacity, an expiration date of the gas stored in the bottle and / or a telephone number.
    [0017]
    17. Method according to one of claims 10 to 16, characterized in that at least one piece of information encoded by the matrix code of the marking is stored and / or displayed in association with a pressure value determined in step f. ).
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    同族专利:
    公开号 | 公开日
    AU2015228639A1|2016-10-20|
    EP3117197A1|2017-01-18|
    WO2015136207A1|2015-09-17|
    FR3018606B1|2017-08-25|
    AU2015228639B2|2019-07-04|
    EP3117197B1|2019-11-06|
    CA2942457A1|2015-09-17|
    US20170003189A1|2017-01-05|
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    法律状态:
    2016-03-21| PLFP| Fee payment|Year of fee payment: 3 |
    2017-03-22| PLFP| Fee payment|Year of fee payment: 4 |
    2018-03-23| PLFP| Fee payment|Year of fee payment: 5 |
    2020-03-19| PLFP| Fee payment|Year of fee payment: 7 |
    2021-03-23| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1452138A|FR3018606B1|2014-03-14|2014-03-14|INTELLIGENT PRESSURE GAUGE FOR BLOCK PRESSURE FLUID CONTAINER TAP|FR1452138A| FR3018606B1|2014-03-14|2014-03-14|INTELLIGENT PRESSURE GAUGE FOR BLOCK PRESSURE FLUID CONTAINER TAP|
    CA2942457A| CA2942457A1|2014-03-14|2015-03-10|Intelligent pressure gauge for pressurized fluid container valve unit|
    US15/125,807| US20170003189A1|2014-03-14|2015-03-10|Intelligent pressure gauge for pressurized fluid container valve unit|
    EP15714594.7A| EP3117197B1|2014-03-14|2015-03-10|Intelligent pressure gauge for pressurized fluid container valve unit|
    AU2015228639A| AU2015228639B2|2014-03-14|2015-03-10|Intelligent pressure gauge for pressurized fluid container valve unit|
    PCT/FR2015/050583| WO2015136207A1|2014-03-14|2015-03-10|Intelligent pressure gauge for pressurized fluid container valve unit|
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