FR3060111B1 - TOOL AND METHODS FOR MEASURING PLAN RATINGS - Google Patents

Abstract

The invention relates to a tool (1) for measuring the dimensions of a plane (P), comprising a support (2), nozzles (3, 4), a sensor for providing a measurement quantity (D) of the distance between the ends (31, 41) of the spouts (3, 4), a display unit (6) of at least one plane dimension in function of at least the measurement variable (D). The invention is characterized in that the measuring tool (1) comprises a human-machine interface (7) comprising a keypad (71) for entering a corrective dimension (L1) and / or a value d scale (SC), a key (72) for recording the corrective dimension (L1) and the corresponding distance measuring quantity (D1), and / or a key (73) for recording the scale value (SC) input, a calculator of a multiplicative correction factor for the odds, equal to the corrective rating (L1), divided by the first distance (D1) of nozzles or as being equal to the scale value (SC) , the calculator being able to calculate the plane dimension to be displayed on the display unit (6), as being corrected at least by the distance measuring variable (D) supplied by the sensor, multiplied by the multiplying factor of correction.

Description

The invention relates to a plan dimension measuring tool.

One field of application of the invention relates to building plans of houses or buildings.

Such plans are used in the field to build the house or building and are used by building professionals, such as architects, builders, designers, builders, craftsmen, companies of the building, but also real estate professionals, notaries, land surveyors, DPE agents, real estate and thermal diagnostic agencies and, more generally, all professionals making measurements on drawings or drawings (product designers, design offices, particularly ). The inventor realized that, on a regular basis, errors in the field are made by reading the dimensions on the plans. In fact, there is often a lack of notice on the plan and professionals on the site directly measure these rates on the plan and apply the indicated scale.

However, in many cases, the plans used are photocopies or prints that change the scale of the plan. The measured odds are never lesbians. The object of the invention is to obtain a measurement tool, as well as a method for measuring dimensions on a plane, which solves this problem and which makes it possible to read on a given map a given or not. For this purpose, a first object of the invention is a measuring tool (1) for measuring dimensions of a plane (P), comprising a support (2), at least a first spout (3) fixed to the support (2). ) and having a first end (31) of application against the plane (P), at least one second spout (4) having a second end (41) of application against the plane (P) and able to be moved manually on the support (2) for varying a distance between the first application end (31) and the second application end (41), at least one sensor (5) arranged to provide a measurement quantity (D) of the actual distance between the first application end (31) and the second application end (41), at least one display unit (6), able to display at least one planar dimension according to at least one of the measurement variable (D). ) provided by the sensor (5), characterized in that the measuring tool (1) further comprises at least one inter face (7) man-machine having • a keypad (71) for entering at least a first cotecorrective (Ll) and / or at least a second scale value (SC), • a first key (72) allowing storing in a memory (9) the first corrective dimension (L1), which has been entered on the numeric keypad (71), and the distance measuring quantity (D1), called the first nose resistance (D1), supplied by the sensor (5) and corresponding to aposition of the second spout (41) relative to the support (2), having been selected by the user, and / or a second key (73) for recording in the memory (9) the second value of scale (SC), having been entered on the numeric keypad (71), - a calculator (8) provided for calculating and memorizing in the memory (9) a multiplicative factor (FCL) for correction of the odds, as being equal to the first corrective rating (Ll), divided by the first distance (Dl) debecs or as being gal to the second scale value (SC), the calculator (8) being able to calculate the dimension (L2) of the plane to be displayed on the display unit (6), as being corrected at least by the measurement quantity (D) distance provided by the sensor (5), multiplied by the multiplying factor (FCL) correction.

Thanks to the invention, the measurement tool displays the actual dimension measured by the tool on the plan by correcting the errors mentioned due to the photocopy (or due to the software formatsconversions) or the printing of the plan and automatically calculating for each plane the multiplicative factor of correction.

According to one embodiment of the invention, the display unit (6) has a first display area (61) provided for displaying the dimension (L2) deplan, having been calculated by the calculator (8), and a second display area (62) for displaying the correction multiplying factor (FCL).

According to one embodiment of the invention, the second spout (5) is displaceable opposite the first spout (4).

According to one embodiment of the invention, the measuring tool (1) is of the vernier caliper type.

According to one embodiment of the invention, the display unit (6) is integral with the first spout (3) or the support (2).

According to one embodiment of the invention, the display unit (6) is solid with the second spout (4).

According to one embodiment of the invention, the interface (7) man-machine is secured to the first spout (3) or the support (2).

According to one embodiment of the invention, the interface (7) man-machine is secured to the second spout (4).

According to one embodiment of the invention, the human-machine interface (7) and / or the display unit (6) and / or the computer (8) is included in a telecommunication terminal, which is remote from each other. a distance measuring unit in which the support (2), the first spout (3), the second spout (4) and the sensor (5) are connected to each other, the measuring unit and the telecommunication terminal being able to communicate with each other by a wireless communication link.

According to one embodiment of the invention, the sensor (5) is resistive.

According to one embodiment of the invention, the interface (7) man-machine further comprises a third key (74) for resetting the dimension (L) plane for another position of the second spout (5) on the support (2), having been selected by the user, and / or a fourth button (75) for converting the plane dimension (L) into a unit of measurement of selectable length from a plurality of different pre-recorded length measuring units, and / or a fifth key (76) for setting the second scale value (SC).

A second object of the invention is a measurement method for measuring dimensions of a plane with the aid of the measuring tool as described above, characterized in that during a first calibration step: the second spout (4) is moved on the support (2) in a first position with respect to the first spout (3) and the first and second end ends (31, 41) of application are applied in this first position against first reference marks (R1, R2) of the plane (P) of which a dimension (Ll) delimited by the firstrepteres (R1, R2) is to be measured and a first corrective reference (Ll) is entered on the keypad (71); first key (72) to cause the recording, in the memory (9), of the first corrective dimension (L1) having been inputted and of the distance measuring magnifer (D1), called the first distance (D1) of nozzles, supplied by the sensor (5) and corresponding to the first selected position, - then the calculator calculates a correction multiplying factor (FCL) for the dimensions of the plane, as being equal to the first corrective dimension (L1), divided by the first distance (D1) of nozzles and stores the multiplication factor (FCL) decorrection in the memory (9), and then during a second measurement step of a second dimension (L2) of plane, different from or identical to the first dimension (Cl) and delimited bytwoeme marks (R3, R4) of the plane ( P), different from or identical to the firstrepers (R1, R2): - the second spout (5) is moved on the support (2) in a secondposition chosen, different from or identical to the first position, relative to the first spout (3 ) and applying the first and second ends (31, 41) of application being in this second position against the second marks (R3, R4) of the plane (P), - the calculator calculates the second dimension (L2) of plane corresponding to the second chosen position, as being corrected by at least the measurement variable (D) provided by the sensor (5), multiplied by the correction multiplying factor (FCL) and the display unit (6) displaying the second dimension (L2) of plank corresponding to the second position chosen.

A third object of the invention is a measuring method for measuring planes using the measuring tool as described above, characterized in that during a first calibration step: at least one scale value (SC) is entered on the keypad (71), and then the first key (72) is pressed to cause the scale value to be stored in the memory (9) ( SC) having been grasped, then during a second step of measuring a dimension (L3) of plane: - the second spout (4) is moved on the support (2) at a selected position relative to the first spout ( 3) and applying the first and second ends (31, 41) of application in this selected position against desrepers (R3, R4) of the plane (P) including a dimension (L3) of plane separating the marks (R3, R4 ) is to be measured, - the calculator calculates the plan dimension (L3) corresponding to the selected position, as corrected at least by r the measurement quantity (D) supplied by the sensor (5), multiplied by the scale value (SC) and the display unit (6) displays the dimension (L3) of the plane corresponding to the chosen position.

A fourth subject of the invention is a computer program comprising code instructions for the implementation of one and / or the other of the measurement methods as described above, when executed on a computer. (8). The invention will be better understood on reading the description which follows, with reference to the accompanying drawings, in which: FIGS. 1 and 3 are schematic views from above of the measuring tool according to an embodiment of the invention; invention in different positions of its becmobile, - Figure 2 is a schematic view of an example of a plane on which can be used the measuring tool according to the invention - Figure 4 is a block diagram of the measuring tool according to one embodiment of the invention, - Figures 5 to 8 are schematic top views of the measuring tool according to an embodiment of the invention during different stepspossibles don don use, - Figure 9 is a diagram of an example of a sensor that can be used in the measuring tool according to an embodiment of the invention.

In FIGS. 1, 3 and 5 to 8, the measuring tool 1 comprises a first spout 3 attached to a support 2 and a second spout 4 that is manually movable on the support 2. The first spout 3 has a first end 31 for application against a P plane, while the second spout 4 has a second end 41application against the plane P. The displacement of the spout 4 on the support 2 allows to vary the actual distance between the first end 31 of application and the second end 41 of application. For example, the spout 4 is guided on the support 2 along a guide direction 21, to vary the distance between the ends 31 and 41 along this guide direction 21. Of course, the invention is applicable to any other type of displacement of the spout 4 with respect to the spout 3.

The ends 31 and 41 may be applied against a plane P, which may be in particular a plane of a construction, as indicated above, and may be associated with DES drawings of a building or the like, as is shown here. The plane P is dimensioned, that is to say that it comprises dimensions indicating lengths present between marks, for example therepers R1, R2, R3, R4, forming part of the plane P in the drawing DES. The support 2 may or may not comprise a graduated ruler 22 on which the second spout 4 is movable to visually read in front of which 23 graduations of the ruler 22 is the second end 41 of the second spout 4. The first end 31 and the first spout 3 can for example be in front of a zero scale of rule 22.

The spouts 3 and 4 can be of the inner spout type as shown in figs, that is to say that the two ends 31 and 41 of application thereof are enface one of the other and delimit between them a free space. However, the spouts 3 and 4 could also be of the outer spout type, that is to say that the ends 31 and 41 are turned out of the distance separating them. Envariante, one of the beaks 3 and 4 can be of the type inner beak and the other of the beaks 3 and 4 can be of the type outside beak. The end 31 and / or 41 of application can be peak form. The measuring tool 1 further comprises at least one sensor 5 capable of providing a quantity D for measuring the real distance between the first end 31 of application and the second end 41 of application. The measuring tool 1 furthermore comprises at least one display unit 6 for displaying at least one plane dimension L and which can be formed, for example, by a digital segment display (as shown in FIGS. 1, 3, 5 to 8). ) or a display screen. Lacote L plane displayed by the unit 6 varies, for example in a monotonous manner, at least of the measurement variable D supplied by the sensor 5. For example, in the position shown in Figure 1 of the spout 4, the Display unit 6 displays a 60 mm plane LO rating, for a 1: 1 plane scale.

In the example of Figure 3, the spout 4 is against the spout 3 and the ends 31 and 41 are against each other, so that the distance between them is zero and the plan dimension displayed by the Display unit 6 is 0.0 mm for a plane scale of 1: 1.

Of course, the spout 4 and its end 41 may, for example, take up any position between a minimum spacing and a maximum spacing, in a continuous or discrete manner, on the support 2, as indicated by the two arrowsrepresented in FIG.

According to the invention, the measurement tool 1 comprises a man-machine interface 7 comprising a numeric keypad 71. This keypad 71 comprises destouches or buttons, for example ten keys for the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9, a key 71a for a digital comma and a key 71b for deleting the input. The numeric keypad 71 makes it possible to enter numerical values. The keypad 71 allows the user to enter at least a first corrective dimensionL1 and / or at least a second scale value SC.

In addition, the man-machine interface 7 comprises at least one key (72 or 73 described below) for causing the recording in a memory 9 of a multiplying factor FCL correction for dimensions.

According to a first embodiment of the measuring tool 1 and the measuring method according to the invention, the man-machine interface 7 comprises a first layer 72 or the like (as indicated below) making it possible to record in the memory 9 a first corrective dimension L1, which has been entered by the user on the digital pad 71. Pressing on the first key 72 makes it possible to store in the memory 9, with this first corrective dimension L1, the measurement quantity D1 dedistance (called first distance D1 of beaks) provided by the sensor 5 and corresponding to a position of the second spout 41 on the support 2, having been chosen by the user.

Thus, for example, in order to carry out a measurement method with the aid of the measuring tool, the user, during a first calibration step, moves the second spout 4 in this first selected position relative to the first one. beak 3 andappliques their first and second ends 31, 41 of application being in this first position against first pins of the plane P, for example the first pins RI and R2 of the plane P as shown in Figure 5.

Then, in Figure 6, the user enters on the keypad 71 the first corrective recipe L1 (as represented by the arrow Fl) and actuates the first layer 72 (as shown by the arrow F2). The measurement tool 1 further comprises a computer 8 programmed to calculate and store in the memory 9 the multiplying factor FCL of correction for the dimensions. The calculator 8 calculates the multiplying factor FCL of equal correction to the first corrective dimension L1, having been recorded in the memory 9, divided by the first distance D1 of nozzles, having been recorded in the memory 9 in association with the first corrective dimension L1 having been stored in memory 9, i.e. FCL = L1 / D1.

In fact, even having been able to go before the step of FIG. 6, the nominal scale indicated on the plane P (for example 1:20 in FIG. 2) by the second key 73, the number displayed by the unit 6 to FIG. 5 (for example 6000 mm) may differ from the dimension C1 (for example 590 cm in FIG. 2) indicated on the plane P and separating the marks RI and R2 from the plane P, due to uncontrolled dimensional distortions of the plane, due to photocopying by a printer or printing on a printer or scanning by a scanner. The first key 72 makes it possible to correct this dimension L0 in the first corrective dimension L1, which will be equal in the example of FIGS. 2 and 6 to 5900 mm to be equal to lacote C1 of 590 cm indicated on the plane P. The first key 72 allows therefore, to enter in FIG. 6 a corrected scale value equal to this correction multiplication factor CFL in the memory 9, to take account of the dimensional deformations of the plane P with respect to the scale it indicates.

When the user wishes to measure any dimension L2 delimited by planes of reference, such as another dimension C2 delimited byrepères RI and R3 and whose value is indicated on the plane P, and / or another dimension C3defined by the marks R3 and R4 and whose nominal value is not indicated on the plane P, the user moves the second spout 5 on the support 2 in a selected second position, different from the first position or identical to the first position, with respect to the first spout 3, and applies the first and second end ends 31, 41 of application being in this second position against the second reference marks of the plane delimiting this second dimension (R1, R3 or R3, R4 in the examples above).

The computer 8 is programmed to calculate the second dimension L2 of the plancorresponding to the second selected position. The second dimension L2 of the calculated plane is corrected by the measurement variable D supplied by the sensor 5, multiplied by the multiplication factor FCL correction. Thus, the second dimension L2 of the calculated plane is equal to a constant B close to the measurement variable D supplied by the sensor 5, multiplied by the correction multiplying factor FCL, that is to say that L2 = D .FCL + B, where the constant B is determined and may be zero or non-zero and may be the opposite of a reference dimension with respect to which other dimensions are measured.

According to one embodiment, the second dimension L2 of the calculated plane is equal to the measurement variable D supplied by the sensor 5, multiplied by the multiplying factor FCL correction, that is to say that L2 = D. FCL, which corresponds to the constant B equal to zero in the foregoing.

The computer 8 then controls the display unit 6 to send it the second L2 plane dimension and make it display this second L2 plancororresponding to the second selected position.

The first key 72 thus makes it possible to calculate the actual scale SC of the plane (for example, 1: 19.67 in FIG. 6), which is different from the nominal scale indicated on the plane (for example, 1:20 in FIG. makes dimensional deformations of the plan. This corrected real scale (or multiplying factor FCL of correction) is memorized and is used to display all the dimensions of the plane P by displacement of the second bill 4.

In a second embodiment of the measuring tool 1 and the measuring method according to the invention, the man-machine interface 7 comprises a second key 73 whose actuation by the user causes the recording in the memory 9 of a second scale SC value, which has been entered by the user on the keypad 71 during a first calibration step. For example, the user can enter as the second SC scale value the nominal scale duplan P. Even having been able to enter beforehand the nominal scale indicated on the plane P (for example, 1:20 in FIG. second key 73 and when the user positions the spouts 3 and 4 against the R1 and R2 landmarks of the plane, the LO displayed by the unit 6 (for example 6000 mm in Figure 5) may differ from the nominal lacon Cl (for example 590 cm in Figure 2) indicated on the plane P andseparating the marks Rl and R2 of the plane P, due to dimensional distortions not mastered of the plane, due to its photocopy by a printer or to its printing on a printer or to its scanning by a scanner .

This second embodiment can provide for the user to enter, during the first calibration step, on the numeric keypad 71 of the second scale SC value, not the nominal scale indicated on the plane P (for example 1: 20 in FIG. 2), but a corrected scale value SC (for example 19.67 in FIG. 8). The user may have previously calculated this second scale value SC different from the nominal scale indicated on the planP, by calculating itself this second scale value SC (for example 19.67) as being equal to a dimension indicated on the plane P (for example the dimension CI equal to 590 cm between the marks R1 and R2) divided by the actual distance D1 (300 mm in FIG. 5) on the plane P between the two marks R1 and R2, which can be measured, for example, at the FIG. 7 using the measurement tool 1 in which the second key 73 has been registered with an initial SCO scale value equal to one (the second SC scale value being set to a value by default). The second SCscale value, which has been entered by the user on the keypad 71, is recorded by the computer 8 in the memory 9.

The calculator 8 and the measurement tool 1 are programmed to calculate the correction multiplying factor FCL equal to the second SC scale value stored in the memory 9, that is to say FCL = SC. The computer 8 stores the multiplication factor FCL correction in the memory 9.

Then, during a second measurement step of any dimension L3 deplan, the user moves the second spout 4 on the support 2 in a position that ischosen with respect to the first spout and applies the ends 31 and 41 of applicationse found in this selected position against pins of the plane P, whose L3 separating these marks is to be measured (for example the dimension L3 delimited by the marks R3 and R4 on the plane P in FIG. 2, whose nominal value is not not shown on the P-plane).

The computer 8 is programmed to calculate the L3 dimension of the plancorresponding to this chosen position. The calculated plane dimension L3 is corrected by the measurement variable D supplied by the sensor 5 in the chosen position, multiplied by the correction factor FCL stored in the memory 9.

Thus, the dimension L3 of the calculated plane is equal to a constant B close to the measurement magnitude D supplied by the sensor 5, multiplied by the correction multiplying factor CFL, that is to say that L3 = D. FCL + B or L3 = D. SC + B, constant B being determined and possibly zero or non-zero and possibly opposite to a reference dimension with respect to which the other scores are measured.

According to one embodiment, the dimension L3 of the calculated plane is equal to the measurement magnitude D supplied by the sensor 5, multiplied by the correction multiplication factor CFL, that is to say that L3 = D. FCL or L3 = D. SC, which corresponds to the constant B equal to zero in the foregoing.

The computer 8 then controls the display unit 6 to send to it laced L3 of calculated plane and make it display this L3 plane dimension corresponding to the second chosen position.

The second key 73 thus makes it possible to correct the scale of the plane P in a real scale SC that makes it possible to go directly from the measurement of distance DI to the real dimension delimited by reference marks of the plane. The second key 73 thus makes it possible to enter a corrected scale value equal to the correction multiplication factor CFL in the memory 9, to take account of the dimensional deformations of the plane P with respect to the nominal scale that it indicates. The display unit 6 may comprise a first display area 61 displaying the plane LO, L1, L3, having been calculated by the computer 8, and a second display area 62 displaying the correction multiplying factor FCL, having been saved in memory 9.

In the embodiments shown in the figures, the display unit 6 is fixed to the first spout 3 or the support 2. However, in other modes of realization not shown, the display unit 6 can be attached to the second spout 4mobile. Similarly, in the embodiments shown in the figures, the man-machine interface 7 is fixed to the first spout 3 or the support 2. In other embodiments not shown, the human-machine interface 7 and / or display unit 6 and / or the computer 8 is remote in a remote telecommunication terminal. This telecommunication terminal may for example be a mobile phone, a watch, a tablet or a laptop or other.

For example, the man-machine interface 7 is included in the communication terminal, which is itself distant from a distance measuring unit in which the support 2, the first spout 3, the second spout 4, the sensor 5, the display unit 6 and the computer 8 are located.

In another example, the display unit 6 is included in the communication terminal, which is itself distant from a distance measuring unit in which the support 2, the first spout 3, the second spout 4, the sensor 5, the man-machine interface and the computer 8 are located.

In another example, the computer 8 is included in the communication terminal, which is itself distant from a distance measuring unit in which the support 2, the first spout 3, the second spout 4, the sensor 5, display unit 6 and the man-machine interface 7 are located. The distance measuring unit and the communication terminal are provided with communication means for communicating with each other via a wireless telecommunication link.

The sensor 5 can be resistive or other.

According to one embodiment, in the case of a resistive sensor, the measurement magnitude D supplied by the sensor 5 may for example be an electrical voltage or an electrical resistance, which varies in a monotonic manner as a function of the actual resistance D between the ends 31 and 41.

For example, in the case of a resistive sensor, in FIG. 9, this sensor 5comporte: a first conductor 51 extending from its first end 511 located on the side of the first fixed spout 3 along the guide direction 21 on the support 2 to its second free end 512, - a second conductor 52, extending from its third end 521situated on the side of the first fixed spout 3 along the guide direction 21 on the support 2 to its fourth end free 522, - a third transverse conductor 53 extending in a second direction 24 secant relative to the first direction 21 for guiding and for example perpendicular to this direction 21 of guidance.

The third transverse conductor is attached to the second movable spout 4 below it to be in contact with the first and second conductors 2 extending on the support 2. The electrical resistance seen by the first end 511 of the first conductor 51 and the third end 521 of the second regulator 52, varies depending on the position of the second spout 4 movable along the guide direction 21, because the third transverse conductor 53 bypasses the first and second conductors 51, 52 of the support 2 in this position This sensor 5 of the resistive type may comprise a current source 54 constantreliant the first end 511 of the first conductor 51 at the third end of the second conductor 5221 and a device 55 for measuring voltage or electrical resistance between these two ends 511 and 521 conductors 51, 52, the displacement of the second spout 4 on the support 2 in the direction 21 guidingfaisa In this case, the electrical voltage or electrical resistance between these two ends 511 and 521 of the conductors 51, 52 should vary.

According to one embodiment, in FIG. 4, the man-machine interface 7 may further comprise a third key 74 for causing the plane L-dimension to be reset for a certain other position of the second spout 4 on the support 2, having chosen by the user. This other reset position of the plane dimension L may, for example, correspond to a measurement variable D of zero distance between the first end 31 of application and the second end 41 of application of the jaws 3 and 4, as well as represented in FIG. 3, or in anotherposition where the measurement variable D corresponds to a non-zero real distance between these ends 31 and 4L. The calculation of the planar coordinates L by the computer 8 will then be subtracted from the measurement variable D of distance provided by the sensor 5, multiplied by the correction multiplying factor FCL, the reference LREF reference being calculated in said other reset position of the second spout 4, when the user pressed the third reset key 74 (this that can be in the above the constant B = - LREF). The man-machine interface 7 may comprise a fourth key 75 for converting the plane dimension L to a length measurement unit that can be selected from several measurement units of different lengths stored in the memory 9, for example in millimeters. centimeters, meters or inches, feet, or others. The man-machine interface 7 may comprise a fifth key 76 causing the value of one of the second SC scale value (SC = 1) to be set, as for example in FIG. 5. By default, that is, In the absence of operation of the second key 73 by the user, and in the absence of operation of the first key 72 by the user, the second value SC of scale remains at the value one. For example, any entry on the keypad 71, not stored in the memory 9 within a certain time (for example five seconds or other) by pressing the button 72 or 73, is replaced by the actual value of the measurement magnifer D distance before the entry, that is to say by a score Laffichée equal to a value calculated for the second scale SC value equal to one (in this case L = D). The measuring tool 1 may comprise a device for retaining the spout 4 movable on the support 2 in each position chosen by the user, in order to keep the spoiler 4 in this position on the support 2 below a certain force threshold. displacement exerted on the spout 4 mobile. This makes it possible to apply the spouts 3 and 4 on markers of the plane P without these spouts moving relative to each other. Thus, the user must exert a displacement force greater than this deretenue force threshold, to move the spout 4 again relative to the first spout 3. The tool 1 for example measurement may for example have a range of distance measurement actual D between the ends 31 and 41 of 0-150 mm, or 0-300 mm, or 0-500 mm or other. The tool 1 measurement may include a snap point. The support 2 may be for example planar.

The support 2 may comprise a limit stop 100 for the bomobile 4, away from the first spout 3. The measuring tool 1 may comprise an autonomous power supply, such as for example an electric battery or an electric battery, which can be removable and rechargeable in energy or not rechargeable in energy. The battery or battery can be recharged for example by a photovoltaic cell provided on the measuring tool 1, for example on the top of the support 2 or on the top of another element of the tool 1. The display unit 6 can have a backlight can be started by pressing a sixth key 77 backlight. In addition, the tool 1 demesure may include a lighting device to the outside, for example orientè the bottom of the support 2 to illuminate the plane P, being operable by latouche 77 backlight or by another key .

The backlight can be operated for a limited time, for example being able to be a minute or other. The display unit 6 can switch to a waking mode after a prescribed display duration without measurement change or input, which may be for example three minutes or other. The measurement tool 1 may furthermore comprise a seventh key 78 for starting and stopping the measuring tool 1. The measuring tool 1 may also include a lighting device of the man-machine interface 7. The man-machine interface 7 and / or the numeric keypad 71 and / or the aforementioned key (s) may be formed of buttons or be formed of tactile keys displayed on a screen, or more generally manual (s) command (s) (s).

The computer 8 may be programmed by a computer program (stored in the memory 9 or the like) having code instructions for executing the above-described steps of one and / or the other of the measurement methods.

Claims (5)

1. Measuring tool (1) for measuring dimensions of a plane (P), "important unsupport (2), at least a first spout (3) fixed to the support (2) and having a first end (31) of application against the plane (P), at least a second nozzle (4) having a second end (41) of application against the plane (P) and able to be manually moved on the support (2) to vary a distance between the first end (31) of application and the second end (41) of application, at least one sensor (5) arranged to provide a measurement quantity (D) of the actual distance between the first end (31) of application and the second application end (41), at least one display unit (6), capable of displaying at least one planar dimension according to at least one of the measurement variable (D) provided by the sensor (5), characterized in that the measuring tool (1) further comprises at least one human-machine interface (7) having "a keypad Erique (71) to enter at least a first cotecorrective (El) and'or at least a second scale value (SC), »a first key (72) for recording in a memory (9) the first rating corrective (L1), having been entered on the numeric keypad (71), ri the measurement variable (Dl) of distance, called first nose resistance (Dl), provided by the sensor (5) and corresponding to aposition of the second beak ( 41) relative to the support (2), having been selected by the user, and / or a second key (73) for recording in the memory (9) the second scale value (SC), having been inputted to the numeric keypad (71), - a calculator (8) provided for calculating and memorizing in the memory (9) a correction multiplier (FCL) for the odds, as being equal to the first corrective rating (El), divided by the first distance (D1) debecs or as being equal to the second scale value (SC), the the calculator (8) being adapted to calculate the dimension (L2) of the plane to be displayed on the display unit (6), as being corrected at least by the distance measuring variable (D) provided by the sensor (5) multiplied by the multiplying factor (FCL) correction, the sensor (5) being resistive and comprising: - a first conductor (51) extending from its first end (5H) located on the side of the first fixed spout (3) along from the direction (21) of guides on the support (2) to its second free end (512), ~ a second conductor (52), extending from its third end (521) situated on the side of the first fixed spout ( 3) along the direction (21) of guides on the support (2) to its fourth free end (522), - a third transverse conductor (53) extending in a second direction (24) intersecting with respect to the first guide direction (21), the third transverse conductor being attached to the second movable mouthpiece (4) under it to be in contact with the first and second two conductors (51, 52) extending on the support (2), the sensor (5) having a source (54) of constant current connecting the first end (511) of the first conductor (51) at the third end (521) of the second conductor (52) and a device (55) for measuring voltage or electrical resistance between the first end (511) of the first conductor (51) and the third end (521) of the second conductor (52). Measuring tool according to Claim 1, characterized in that the display unit (6) has a first display area (61) provided for displaying the plane dimension (L2) calculated by the calculator (8). ), and a second display area (62) provided for displaying the correction multiplying factor (FCL). 3. Measuring tool according to any one of the preceding claims, characterized in that the second spout (5) is movable in front of the first spout (4). 4. Measuring tool according to any one of the preceding claims, characterized in that it is of vernier caliper type. 5. Measuring tool according to any one of claims 1 to 4, characterized in that the display unit (6) is integral with the first spout (3) or dupport (2). 6. Measuring tool according to any one of claims 1 to 4.characterized in that the display unit (6) is integral with the second spout (4). 7. Measuring tool according to any one of claims 1 to 6, characterized in that the interface (7) man-machine is secured to the first nose (3) or the support (2). 8. Measuring tool according to any one of claims 1 to 6, characterized in that the interface (7) man-machine is secured to the secondbec (4). Measuring tool according to one of Claims 1 to 6, characterized in that the man-machine interface (7) and / or the display unit (6) and / or the computer (8) are included in a telecommunication terminal, which is remote from a distance measuring unit in which the support (2), the first (3), the second spout (4) and the sensor (5) are connected to each other, unit of measurement and the telecommunication terminal being able to communicate with each other by a wireless telecommunication link. 10. Measuring tool according to any one of the preceding claims, characterized in that the interface (7) man-machine additionally comprises a third key (74) for resetting the dimension (L) plan for a further position of the second nozzle (5) on the support (2), having been chosen by the user, and / or a fourth key (75) for converting the plane dimension (L) into a unit of measurement of a length that can be selected from among several measurement units a different pre-recorded length, and / or a fifth key (76) for setting the second scale value (SC). 11. A measurement method for measuring dimensions of a plane using the measurement tool according to any one of the preceding claims, characterized in that during a first calibration step: the second beak (4) on the support (2) in a first positionchosie relative to the first spout (3) and applying first and second ends (31,41) of application being in this first position against first marks (RI, R2 ) of the plane (P) of which a dimension (Ll) delimited by the firstrepteres (R1, R2) is to be measured and a first corrective reference (Ll) is entered on the keypad (71), - then the first key (72) is actuated ) to cause the recording, in the memory (9), of the first corrective dimension (L1) that has been inputted and the distance measuring magnifer (D1), called the first distance (D1) of spouts, supplied by the sensor ( 5) and corresponding to the first selected position, - then the calculator calculates a correction multiplying factor (FCL) for the dimensions of the plane, as being equal to the first corrective dimension (L1), divided by the first distance (D1) of nozzles and stores the multiplication factor (FCL) of correction in the memory ( 9), - then in a second measurement step of a second dimension (L2) of plane, different from or identical to the first dimension (Cl) and delimited by deuxemes marks (R3, R4) of the plane (P ), different from or identical to the firstrepers (RI, R2): - the second spout (5) is moved on the support (2) in a secondposition chosen, different from or identical to the first position, relative to the first spout (3) and applying the first and second ends (31, 41) of application being in this second position against the second marks (R3, R4) of the plane (P), - the calculator calculates the second dimension (L2) corresponding plane at the second position chosen, as a t corrected by at least the measurement quantity (D) provided by the sensor (5), multiplied by the correction multiplication factor (FCL) and the display unit (6) displays the second dimension (L2) of plank corresponding to the second position chosen. 12. A measurement method for measuring dimensions of a plane using the measurement tool according to any one of claims 1 to 10, characterized in that during a first calibration step: enter on the number pad (71) at least one scale value (SC), - then the first key (72) is actuated to cause the scale value (SC) to be stored in the memory (9). ) having been entered, then during a second step of measuring a dimension (L3) of plane: - the second spout (4) is moved on the support (2) at a selected position relative to the first spout (3). ) and applying the first and second application ends (31, 41) in this selected position to desrepers (R3, R4) of the plane (P) including a plane dimension (L3) separating the marks (R3, R4) is to be measured, - the calculator calculates the plane dimension (L3) corresponding to the chosen position, as being corrected at least by the large Measuring value (D) provided by the sensor (5), multiplied by the scale value (SC) and the display unit (6) displays the plane dimension (L3) corresponding to the selected position. 13. Computer program comprising code instructions for implementing the measuring method according to claim 11 or 12, when executed on a computer (8).