EP3384233A1 - Procédé de mesure d'une température de fonctionnement d'un appareil - Google Patents

Procédé de mesure d'une température de fonctionnement d'un appareil

Info

Publication number
EP3384233A1
EP3384233A1 EP16798776.7A EP16798776A EP3384233A1 EP 3384233 A1 EP3384233 A1 EP 3384233A1 EP 16798776 A EP16798776 A EP 16798776A EP 3384233 A1 EP3384233 A1 EP 3384233A1
Authority
EP
European Patent Office
Prior art keywords
bubble
temperature
axis
laser
gas bubble
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16798776.7A
Other languages
German (de)
English (en)
Inventor
Sasha Lukic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP3384233A1 publication Critical patent/EP3384233A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K5/00—Measuring temperature based on the expansion or contraction of a material
    • G01K5/28—Measuring temperature based on the expansion or contraction of a material the material being a gas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/002—Active optical surveying means
    • G01C15/004—Reference lines, planes or sectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/002—Active optical surveying means
    • G01C15/008—Active optical surveying means combined with inclination sensor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
    • G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
    • G01C9/26—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K15/00—Testing or calibrating of thermometers
    • G01K15/005—Calibration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K2217/00—Temperature measurement using electric or magnetic components already present in the system to be measured

Definitions

  • the present invention relates to a method for measuring an operating temperature of an apparatus, which can be aligned by means of a leveling device in a defined state, according to the preamble of claim 1 and an apparatus according to the preamble of claim 3.
  • the accuracy of equipment is affected by ambient conditions, such as the storage temperature or operating temperature of the apparatus, by an external force on the apparatus in the event of falls or heavy impact and by aging processes of the equipment components of the apparatus.
  • ambient conditions such as the storage temperature or operating temperature of the apparatus
  • the aging of the device components takes place on a long time scale and alters the accuracy of an apparatus very slowly.
  • the external impact on an apparatus by a fall or a strong impact is an event that is unpredictable to the operator and therefore difficult to take into account.
  • the operating temperature of an apparatus is a quantity that always affects the accuracy of the apparatus. Every use or operation of the apparatus is subject to environmental conditions which influence the accuracy of the apparatus.
  • Rotary lasers can be arranged in different device layers, which are designed as horizontal position and vertical position.
  • horizontally usable rotary lasers which are used exclusively in the horizontal position
  • horizontally and vertically insertable rotary lasers which are used in horizontal position and vertical position.
  • Horizontal usable rotary lasers have as device axes on a first horizontal axis and a second horizontal axis, which are perpendicular to each other and span a horizontal plane.
  • Horizontally and vertically usable rotary lasers have as device axis in addition to the first and second horizontal axis on a vertical axis which is perpendicular to the horizontal plane of the first and second horizontal axis.
  • the device manufacturers of rotary lasers define in their operating instructions for the operating temperature of the rotary laser, a temperature range in which the rotating laser may be operated.
  • the operation of rotary lasers is typically allowed in a temperature range of -20 ° C to + 50 ° C.
  • the adjustment of a rotary laser and the calibration of the device axes are performed by the device manufacturer under specified ambient conditions;
  • the calibration of the device axes is typically carried out at a normal temperature of + 20 ° C.
  • the accuracy must be regularly checked by the operator and a calibration of the rotary laser must be carried out if a maximum difference, which has been defined by the device manufacturer, is exceeded.
  • the accuracy of the rotation laser for each device axis is checked separately.
  • Methods are known for checking and / or calibrating a horizontal axis, which are used in all horizontally applicable rotary lasers, and methods for checking and / or calibrating a vertical axis, which are used exclusively with vertically applicable rotary lasers.
  • a first method the first horizontal axis is checked and in a second method the second horizontal axis, wherein the order in which the first and second methods are performed is arbitrary.
  • a check of the vertical axis takes place in a third method.
  • the alignment of the device axes in a defined state by means of a leveling device, which is arranged in a device housing of the rotary laser.
  • the defined state of the device axes may be a horizontal state or a vertical state.
  • the leveling device comprises a first leveling unit which aligns the first horizontal axis in a first defined state, a second leveling unit which aligns the second horizontal axis with a second defined state and, in the case of a vertically insertable rotary laser, a third leveling unit which defines the vertical axis in a third defined state Align state.
  • the leveling units each comprise a tilt sensor which measures the inclination of the device axis, and an adjustment element with which the inclination of the gearing can be adjusted. Ideally, the inclination sensors are aligned parallel to the assigned device axes. If a tilt sensor is not aligned parallel to the assigned axis of the device, the axis of the device has a tilt error.
  • a tilt sensor formed as a bubble includes a housing filled with a liquid and a gas bubble, a light source, and one or more photodetectors.
  • the housing is characterized by a vex curved cover layer is completed and the gas bubble moves along the top layer when the tilt sensor is tilted relative to a horizontal or vertical reference plane.
  • the light source preferably emits divergent light (eg LED) and is centered with an optical axis of the tilt sensor, which simultaneously forms the axis of symmetry of the dragonfly.
  • the gas bubble in the sealed liquid indicates the orientation of the bubble.
  • the gas bubble is always at the highest point of the liquid.
  • the dragonfly is connected to the apparatus so that the gas bubble is in the defined state of the apparatus at a certain point of the dragonfly.
  • the defined state of the apparatus can be produced or restored with little effort by means of the spirit level.
  • the defined state does not necessarily have to be a horizontally or vertically oriented state of the apparatus. In principle, any desired angle of inclination for the defined state can also be predetermined by an inclined arrangement of the bubble level on the apparatus.
  • Known rotating lasers such as the Laser Beacon LB-400 rotary laser, have a temperature sensor that measures the temperature inside the device housing of the rotating laser. If the measured temperature exceeds the upper limit of the permissible temperature range during operation, the operation of the rotary laser is interrupted by switching off the motors and the beam source. Once the measured temperature falls below the upper limit, the operation of the rotary laser can be resumed.
  • the temperature sensor ensures that the motors and the beam source are only operated within the permissible temperature range and protects these device components from damage due to increased temperatures. The temperature of the rotary laser is not taken into account when calibrating the device axes of the rotary laser.
  • the rotary laser comprises a monitoring unit and a sensor unit with a temperature sensor, an acceleration sensor and a real-time sensor.
  • the temperature sensor measures a storage or operating temperature of the rotary laser
  • the accelerometer measures forces and accelerations due to falls or strong shocks
  • the real-time sensor measures the time since the last proper calibration of the rotary laser.
  • the measured values of the sensors are recorded with the help of the monitoring unit at regular intervals and forwarded to a control and evaluation device. Limit values are defined for each measurand and the measured values of the sensors are compared with the limit values. If a reading is outside the
  • the warning unit will alert the operator generated.
  • the warning message is visually or acoustically displayed and includes a prompt for the operator to calibrate the rotating laser.
  • a limit interval is defined with a lower limit and an upper limit, with the lower limit corresponding to the minimum temperature and the upper limit corresponding to the maximum temperature of the allowable temperature range.
  • the object of the present invention is to develop a method for measuring an operating temperature of an apparatus, which can be aligned by means of a leveling device in a defined state, wherein the apparatus required for the temperature measurement is reduced.
  • the temperature should be able to be measured at various locations in the device housing of the apparatus.
  • the method for measuring an operating temperature of an apparatus which is aligned by means of a leveling device in a defined state, wherein the leveling device comprises at least one inclination sensor with a housing which is filled with a liquid and a gas bubble, a light source and a photodetector, the Steps on:
  • the method according to the invention for measuring an operating temperature of an apparatus has the advantage that the temperature measurement is carried out with the aid of an inclination sensor and the apparatus required for the temperature measurement is reduced.
  • Apparatuses which can be aligned in a defined state usually have a leveling device with at least one inclination sensor.
  • the defined state in which the apparatus is aligned by means of the leveling device may be a horizontal state, a vertical state or a tilted state.
  • the tilt sensor includes a housing filled with a gas bubble and a liquid, a light source, and a photodetector.
  • the gas bubble of the tilt sensor has a bubble length.
  • the inventive method is based on the fact that the bubble length of the gas bubble changes depending on the temperature and this dependence is known or determined.
  • the characteristic represents the dependence of the temperature on the bubble length and is stored in the control device of the apparatus. If the current operating temperature is to be determined during operation of the apparatus, the bubble length of the gas bubble is measured and the associated temperature is determined on the basis of the characteristic curve.
  • the measurement of the operating temperature by means of the tilt sensor is particularly advantageous when the operating temperature is used to align the device axes in a defined state. In this case, the operating temperature is measured exactly at the location in the equipment housing of the equipment that is relevant to the alignment of the device axis.
  • the bubble length of the gas bubble is measured by means of the light source and the photodetector of the tilt sensor. If the bubble length is measured with the aid of the light source and the photodetector of the inclination sensor, no further sensor element is required for the temperature measurement and the expenditure on equipment for measuring the temperature is low.
  • the temperature measurement by means of the tilt sensor is particularly advantageous when the operating temperature is used to align the device axes in a defined state, since the operating temperature is measured exactly at the location in the device housing of the apparatus that is relevant to the alignment of the device axis.
  • the apparatus with at least one device axis, which can be aligned in a defined state is characterized in that a characteristic is provided in the control device which represents the operating temperature of the apparatus as a function of a bubble length of the gas bubble of the inclination sensor.
  • the apparatus according to the invention has at least one device axis, which can be aligned by means of a tilt sensor in a defined state.
  • the defined state may be a horizontal state, a vertical state, or a tilted state. If the device has multiple device axes has a tilt sensor is provided for each device axis, which is connected to the device axis and measures the orientation of the device axis to the defined state.
  • the apparatus has a control device in which a characteristic curve is stored, the characteristic curve representing the dependence of the operating temperature of the apparatus on the bubble length of the gas bubble of the inclination sensor. If the current operating temperature is to be determined during operation of the apparatus, the bubble length of the gas bubble is measured and the associated operating temperature is determined on the basis of the characteristic curve.
  • the apparatus has a first and a second device axis, wherein the first device axis can be aligned by means of a first tilt sensor in a first defined state and the second device axis by means of a second tilt sensor in a second defined state, and are in the control device of the apparatus a first and second characteristic curve is provided, wherein the first characteristic represents a first operating temperature of the apparatus in dependence on a first bubble length of a first gas bubble of the first inclination sensor and the second characteristic is a second operating temperature of the apparatus in dependence on a second bubble length of a second gas bubble of the represents second tilt sensor.
  • the apparatus according to the invention has the advantage that the operating temperature of the apparatus can be measured at different locations in the device housing and thereby the accuracy in the temperature measurement is increased.
  • the apparatus has a first and second axis of the device, which can be aligned in a defined state by means of a first and second inclination sensor.
  • the first tilt sensor measures a first temperature
  • the second tilt sensor measures a second temperature.
  • the temperature measurement by means of the first and second tilt sensor is particularly advantageous when the operating temperature is used to align the device axes in a defined state, since the operating temperature is measured exactly at the location in the device housing of the apparatus that is relevant to the alignment of the device axis.
  • the first tilt sensor measures the first temperature and the first tilt angle of the first device axis and the second tilt sensor measures the second temperature the second tilt angle of the second device axis.
  • the apparatus has a third device axis, wherein the third device axis can be aligned by means of a third inclination sensor in a third defined state, and in the control device of the apparatus, a third characteristic is provided, wherein the third characteristic of a third operating temperature of the apparatus in dependence represents a third bubble length of a third gas bubble of the third tilt sensor.
  • the device has a third device axis, which can be aligned with the aid of a third inclination sensor in a defined state, wherein the third inclination sensor is a third temperature measures.
  • Each tilt sensor of the apparatus is suitable for temperature measurement and can increase accuracy in temperature measurement.
  • the advantage of the apparatus according to the invention is that a separate characteristic is stored in the control device for each device axis of the apparatus, which represents the dependence of the operating temperature on the bladder length of the gas bubble.
  • FIG. 1 shows an apparatus according to the invention, which can be oriented horizontally and vertically
  • FIGS. 2A, B show the essential components of the rotary laser of FIG. 1 comprising a leveling device having a first leveling unit for aligning the first horizontal axis, a second leveling unit for aligning the second horizontal axis and a third leveling unit for aligning the vertical axis;
  • FIG. Fig. 3 shows the structure of a tilt sensor for the leveling units of the rotary laser with a housing filled with a liquid and a gas bubble, a light source and a photodetector; and
  • FIG. FIG. 4 shows a characteristic of temperatures and bubble lengths of the gas bubble of the tilt sensor of FIG. Third
  • FIG. 1 shows an apparatus 10 according to the invention, which is designed as a horizontally and vertically alignable rotary laser.
  • the rotating laser 10 generates a first laser beam 12 rotating about a rotation axis 11 and a stationary second laser beam 13.
  • the rotating first laser beam 12 generates a laser plane 14 which is perpendicular to the rotation axis 11 and the second laser beam 13 is perpendicular to the laser plane 14 of the first laser beam 12.
  • the rotary laser 10 comprises a device housing 15 and a measuring device arranged in the device housing 15.
  • the device housing 15 consists of a base housing 16, a rotary head 17 and a plurality of handles 18.
  • the operation of the rotary laser 10 via an operating device 19, which is integrated into the base housing 16 and can be operated from the outside.
  • a remote control 20 may be provided, which is connectable via a communication link with the rotating laser 10.
  • the measuring device of the rotary laser 10 generates in the interior of the base housing 15 a laser beam which strikes a rotating about the axis of rotation 1 1 deflecting optics 21.
  • a first part of the laser beam is deflected by the deflection optics 21 by 90 ° and forms the first laser beam 12 of the rotation laser 10.
  • a second part of the laser beam passes through the deflection optics 21 and forms the second laser beam 13 of the rotation laser 10.
  • a rotation mode, a line mode and a point mode of the rotary laser 10 are distinguished.
  • FIGS. 2A, B show the essential components of the rotary laser 10 of FIG. 1 in a schematic representation
  • FIG. 2A the components in a vertical plane parallel to the axis of rotation 1 1
  • FIG. 2B represents the components in a horizontal plane perpendicular to the axis of rotation 1 1.
  • the rotary laser 10 comprises a laser device with a beam source 23, which generates a laser beam, and a collimation optics 24.
  • the beam source 23 is formed for example as a semiconductor laser which generates the laser beam in the visible wavelength spectrum, for example, a red laser beam with a wavelength of 635 nm or a green laser beam having a wavelength of 532 nm.
  • the laser beam is collimated with the aid of the collimation optics 24.
  • the collimating optics may be integrated in the beam source or at a beam source. le 23 with a high beam quality and low divergence, the collimation optics can be omitted.
  • the collimated laser beam strikes the deflection optics 21, which separates the first and second laser beams 12, 13.
  • the deflection optics 21 is connected to a rotating device 25 which moves the deflection optics 21 about the axis of rotation 1 1.
  • the rotary device 25 comprises a rotatable shaft 26, a motor unit 27 and a transmission device 28, which is designed for example in the form of a toothed belt and transmits the movement of the motor unit 27 to the shaft 26.
  • the deflection optics 21 is coupled to the rotatable shaft 26 and formed rotatable about the axis of rotation 1 1.
  • the shaft 26 is mounted in a rotary bearing 29 of a stator 30, which is connected to a spherical cap 31.
  • the spherical cap 31 is mounted in a Kugelkalottenlagerung 32 in a housing-mounted mounting frame 33 about two to the plane of rotation (plane perpendicular to the axis of rotation 1 1) vertical pivot planes tilted.
  • the rotary laser 10 comprises a measuring device 35, which measures the angle of rotation of the shaft 26 during rotation about the axis of rotation 1 1.
  • the measuring device 35 is designed, for example, as an angle encoder and consists of a measuring disk, which is non-rotatably connected to the shaft 26, a scanning device, with which the measuring disk is scanned, and an evaluation and control.
  • the rotary laser 10 is designed as a horizontally and vertically usable rotary laser, wherein a horizontally and vertically usable rotary laser by an additional device axis differs from a horizontally usable rotary laser.
  • the rotary laser 10 has as device axes on a first horizontal axis 36 and a second horizontal axis 37 which are perpendicular to each other and span a device level.
  • the first and second horizontal axes 36, 37 are displayed on the rotary head 17 of the rotary laser 10 via display elements.
  • the horizontally and vertically usable rotary laser 10 has, in addition to the first and second horizontal axis 36, 37 a further device axis, which is referred to as vertical axis 38 and is aligned in the ideal case perpendicular to the device level of the first and second horizontal axis 36, 37.
  • the rotary laser 10 is designed as a self-leveling rotary laser, which automatically leveled when the device housing 15 of the rotary laser 10 is placed within a self-leveling range.
  • the self-leveling range of rotary lasers is typically 5 °.
  • the rotary laser 10 includes a leveling device, which aligns the device axes of the rotary laser 10 regardless of an orientation of the device housing 15 in a defined state.
  • the leveling device comprises a first leveling unit 40, which aligns the first horizontal axis 36 in a first defined state, a second leveling unit 41, which defines the second horizontal axis 37 in a second defined Align state, and a third leveling unit 42, which aligns the vertical axis 38 in a third defined state.
  • the first leveling unit 40 comprises a first inclination sensor 43 and a first adjusting element
  • the second leveling unit 41 comprises a second inclination sensor 44 and a second adjusting element
  • the third leveling unit 42 comprises a third inclination sensor 45 and a third adjusting element.
  • the adjusting elements of the leveling units 40, 41, 42 are integrated in a tilting device 46, which has a first Versteilmotor 47 and a second Versteilmotor 48.
  • the first adjustment motor 47 inclines the mounting frame 33 about a first pivotal axis coincident with the second horizontal axis 37
  • the second adjustment motor 48 inclines the mounting frame 33 about a second pivotal axis coincident with the first horizontal axis 36.
  • the first Versteilmotor 47 forms the first adjustment of the first leveling unit 40 and the second Versteilmotor 48 forms the second adjustment of the second leveling unit 41. Since the vertical axis 38 is aligned perpendicular to the horizontal plane of the first and second horizontal axis 36, 37, the orientation of the vertical axis 38 be adjusted by means of the first and second Versteilmotors 47, 48.
  • the first and second adjustment motors 47, 48 together form the third adjustment element of the third leveling unit 42.
  • the horizontal orientation of the laser plane or the device level represents a preferred defined state in which a rotary laser 10 is to be aligned in horizontal position, wherein the horizontally aligned device level is also referred to as a horizontal plane.
  • the vertical orientation of the laser plane or the device level represents a preferred defined state, in which a rotary laser 10 is to be aligned in a vertical position, wherein the vertically aligned device level is also referred to as a vertical plane.
  • the laser plane generated by the rotating first laser beam 12 can be tilted by means of the tilting device 46 relative to the horizontal plane or the vertical plane of the rotary laser 10.
  • the rotary laser 10 may tilt the laser plane of the rotating first laser beam 12 in a tilt direction or in two tilt directions.
  • the inclination of the laser plane takes place in the leveled state of the rotary laser 10.
  • the rotary laser 10 can be tilted in the horizontal position or in the vertical position.
  • the control and evaluation of the rotary laser 10 via control elements, which are connected to the beam source 23, the rotating means 25, the measuring device 35, the leveling device 40, 41, 42 and the tilting device 46.
  • the control elements are integrated in a common control device 51, which is designed for example as a microcontroller, or can be designed as separate components.
  • the orientation of the tilt sensors 43, 44, 45, which align the device axes 36, 37, 38 of the rotary laser 10 in a defined state is temperature-dependent and the rotary laser 1 1 in a wide temperature range, for example between - 20 ° C and + 50 ° C, it is advantageous if several zero positions ⁇ are stored in the control device 51 of the rotary laser 10.
  • FIG. FIG. 3 shows the structure of an optical tilt sensor 60 structurally corresponding to the tilt sensors 43, 44, 45 for the leveling units 40, 41, 42 of the rotary laser 10.
  • Inclination sensor 60 includes a housing 61 filled with a gas bubble 62 and a liquid 63, a light source 64, a photodetector 65, and a spacer 66.
  • Rotating laser 10 has three device axes, designated first horizontal axis 36, second horizontal axes 37, and Vertical axis 38 are formed.
  • the leveling device 39 of the rotary laser 10 comprises, for each device axis 37, 38, 39, a leveling unit 40, 41, 42 with a tilt sensor 43, 44, 45 and an adjusting element.
  • the tilt sensors 43, 44, 45 operate independently of one another and can have different temperatures during operation of the rotary laser 10.
  • the temperature of the rotary laser 10 can be measured by means of the tilt sensors 43, 44, 45.
  • the temperature of the first tilt sensor 43 is referred to as the first temperature Ti
  • the temperature of the second tilt sensor 44 as the second temperature T 2
  • the temperature of the third tilt sensor 45 as the third temperature T 3 .
  • the gas bubble 62 of the tilt sensor 60 has a bubble length L, which is temperature-dependent and therefore suitable as a measure of the temperature T of the tilt sensor 60.
  • the bubble length L of the gas bubble 62 can be measured by means of the light source 64 and the photodetector 65.
  • the components of the inclination sensors are provided with an index, which is separated from the reference character by a hyphen.
  • the first inclination sensor 43 has the index "1”
  • the second inclination sensor 44 has the index "2”
  • the third inclination sensor 45 has the index "3”.
  • the first temperature Ti of the first inclination sensor 43 is determined by a first bubble length Li of the first gas bubble 62-1
  • the second temperature T 2 of the second inclination sensor 44 is determined by a second bubble length L 2 of the second gas bubble 62-2
  • the third Temperature T 3 of the third inclination sensor 45 is determined via a third bubble length L 3 of the third gas bubble 62-3.
  • the temperature measurement by means of the inclination sensors 43, 44, 45 has over a temperature measurement by means of a temperature sensor in the device housing of the rotary laser 10 has the advantage that the temperature Ti, T 2 , T 3 is measured exactly at the location in the device housing 15, for the alignment of the first horizontal axis 36, the second horizontal axis valley axis 37 and the vertical axis 38 is relevant.
  • the first inclination sensor 43 measures the first temperature Ti and the first inclination angle of the first horizontal axis 36
  • the second inclination sensor 44 measures the second temperature T 2 and the second inclination angle of the second horizontal axis 37
  • the third inclination sensor 47 measures the third temperature T 3 and the third one Inclination angle of the vertical axis 38.
  • FIG. 4 shows a characteristic curve representing the temperature T as a function of the bubble length L of the gas bubble 62.
  • the characteristic establishes a relationship between the temperature T of the inclination sensor 60 and the bubble length L of the gas bubble 62 for the permitted temperature range of the rotary laser 10 from -20 ° C to + 50 ° C.
  • the bubble length L of the gas bubble 62 changes linearly with the temperature T of the tilt sensor 60, and the bubble length L decreases as the temperature T decreases.
  • the accuracy in the temperature measurement can be increased if, for each inclination sensor 43, 44, 45 of the leveling device 39, a characteristic curve which represents the temperature of the inclination sensor depending on the bubble length of the gas bubble is determined.
  • the control device 51 of the rotary laser 10 has a first characteristic, which represents the first temperature Ti of the first inclination sensor 43 depending on the first bubble length U of the first gas bubble 62-1, a second characteristic, the second temperature T 2 of the second inclination sensor 44 depending on of the second bubble length L 2 of the second gas bubble 62-2, and a third characteristic representing the third temperature T 3 of the third tilt sensor 45 depending on the third bubble length L 3 of the third gas bubble 62-3.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Laser Beam Processing (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

Procédé de mesure d'une température de fonctionnement d'un appareil qui peut être orienté dans un état défini au moyen d'un dispositif de nivellement, ce dispositif de nivellement comprenant au moins un capteur d'inclinaison présentant un boîtier qui est rempli d'une bulle de gaz et d'un liquide, une source de lumière et un photodétecteur. Ce procédé comprend les étapes suivantes : enregistrement d'une courbe caractéristique de longueurs (L) de la bulle de gaz et de températures (T) dans un dispositif de contrôle de l'appareil, mesure de la longueur (L) de la bulle de gaz et détermination de la température (T) associée à la longueur (L) mesurée de la bulle de gaz à l'aide de la courbe caractéristique.
EP16798776.7A 2015-11-30 2016-11-23 Procédé de mesure d'une température de fonctionnement d'un appareil Withdrawn EP3384233A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15197021.7A EP3173735A1 (fr) 2015-11-30 2015-11-30 Procede de mesure d'une temperature de fonctionnement d'un appareil
PCT/EP2016/078486 WO2017093086A1 (fr) 2015-11-30 2016-11-23 Procédé de mesure d'une température de fonctionnement d'un appareil

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Publication Number Publication Date
EP3384233A1 true EP3384233A1 (fr) 2018-10-10

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EP15197021.7A Withdrawn EP3173735A1 (fr) 2015-11-30 2015-11-30 Procede de mesure d'une temperature de fonctionnement d'un appareil
EP16798776.7A Withdrawn EP3384233A1 (fr) 2015-11-30 2016-11-23 Procédé de mesure d'une température de fonctionnement d'un appareil

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WO (1) WO2017093086A1 (fr)

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US11320263B2 (en) 2019-01-25 2022-05-03 Stanley Black & Decker Inc. Laser level system
EP4295113A4 (fr) * 2021-02-22 2024-12-25 Milwaukee Electric Tool Corporation Niveau laser

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EP3173735A1 (fr) 2017-05-31
US10942068B2 (en) 2021-03-09
US20180335349A1 (en) 2018-11-22
WO2017093086A1 (fr) 2017-06-08

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