Generation of display data for a display device of a measuring instrument

Abstract

The invention relates to a method for generating display data for a display means (3) of a measuring device (1), comprising the steps: obtaining environmental data recorded by the measuring device (1), evaluating the environmental data to determine information concerning a person who is in the immediate vicinity of the measuring device (1), determining a target orientation of a representation (7) on the display means (3) depending on the information, generating the display data for the representation (7) on the display means (3) depending on the target orientation, and outputting the display data to the display means (3).According to a further aspect of the invention, a measuring instrument (1) is proposed, comprising a display means (3) for displaying a measured value, a measuring sensor for recording the measured value, at least one unit for recording environmental data, and a device for data processing which is configured to generate display data for the display means (3) according to the method described above.

Description

[0001] The invention relates to a method for generating display data for a display element of a measuring instrument. The invention further relates to a measuring instrument comprising a display element for displaying a measured value and a data processing device configured to generate display data for the display element.

[0002] The measuring device in question can be, in particular, a field device. Field devices are frequently used in process automation technology to detect and / or influence process variables. Examples of such field devices include level gauges, limit level gauges, and pressure gauges with sensors that detect the corresponding process variables: level, limit level, or pressure. These field devices are often connected to higher-level units, such as control systems or monitoring units. These higher-level units are used for process control, process visualization, and / or process monitoring. Field devices known from the prior art typically consist of a housing, a sensor, and a control unit or data processing device located within the housing.

[0003] The energy and / or signal transmission between field devices and higher-level units often follows the well-known 4 mA to 20 mA standard, in which a 4 mA to 20 mA current loop or a two-wire connection is established between the field device and the higher-level unit. In addition to analog signal transmission, the measuring devices can also transmit or receive further information to or from the higher-level unit using various other protocols, particularly digital protocols.

[0004] Field devices are often equipped with a display. This can be, for example, an LCD display or a screen. The display can show a measured value that the field device has determined. It can also show other information. Occasionally, field devices are positioned or installed in such a way that the display is difficult to read. For example, a user might only be able to view the display from a specific direction because the field device is only accessible from one side. In this case, it is problematic if a display element, such as the measured value, is not correctly oriented to the viewing direction.

[0005] From German patent application DE 10 2017 204 980 B3, a display unit for a measuring device of the process and automation unit is known. Depending on the orientation of the display unit, a representation on the display is adjusted. It is also conceivable that a representation on a display is rotated in response to measurement data from a position sensor or an acceleration sensor. If a display is oriented perpendicular to the ground, for example, a suitable orientation of a representation on the display can be determined using such a sensor – the sensor detects where "up" and "down" are. However, this does not work if the display is oriented horizontally to the ground.

[0006] The invention is therefore based on the objective of providing a method for generating display data for a display element of a measuring instrument, such that a representation on the display element is easily legible from different viewing angles for a person viewing the display element, and that the method should also be applicable when the display element is horizontally oriented. A further objective of the invention is to provide a measuring instrument with a display element for displaying a measured value, in which the display element is easily legible from different viewing angles, even when horizontally oriented to the ground.

[0007] The problems are solved by the method according to claim 1 and the measuring device according to claim 15. The dependent claims relate to optional embodiments of the invention. It should be noted that the features listed in the independent and dependent claims can be combined with one another in any way, provided this is technically feasible. This also applies across the boundaries of the claim categories and even if one claim is not dependent on another. The description further characterizes and specifies the invention, particularly in conjunction with the figures. The features contained in the description can also be freely combined with one another, provided this is technically feasible.

[0008] According to a first aspect of the invention, a method for generating display data for a display element of a measuring instrument is proposed. The method comprises the following steps: receiving environmental data recorded by the measuring instrument, evaluating the environmental data to determine information concerning a person located in the immediate vicinity of the measuring instrument, determining a target orientation for a display on the display element based on the information, generating the display data for the display on the display element based on the target orientation, and outputting the display data to the display element.

[0009] To align the display on the display device, environmental data of the measuring device are evaluated according to the invention. The measuring device is preferably a field device. The environmental data preferably refers to data that characterizes the environment of the measuring device. The environmental data preferably relates only to the immediate vicinity of the measuring device. The immediate vicinity can, in particular, be an area within a radius of less than 5 meters, preferably less than 2 meters, around the measuring device. The environmental data is evaluated to determine information that relates to a person in the immediate vicinity. The person can, for example, be a user of the measuring device. According to the invention, the display device can be a display of any type, for example, an LCD display, a screen, a monitor, or the like.

[0010] Based on this information, the target orientation of the display is determined. The target orientation does not refer to the current orientation of the display, but rather preferably to a desired, sensible, and / or advantageous orientation. This may, however, also correspond to the current orientation of the display. The target orientation can, for example, be specified as an angular measurement. According to embodiments of the invention, there can be four possible orientations of the display, so that the display can either be oriented as originally intended or rotated by 90°, 180°, or 270° relative to the original orientation. Accordingly, one of four possible target orientations can be determined.However, it is preferred if further orientations of the display are possible on the display device, so that the desired orientation can be selected, for example, in many different angular dimensions or continuously.

[0011] According to the invention, the display can contain one or more measured values ​​measured by the measuring instrument. Alternatively or additionally, the display can contain other information, text, graphics, and / or data. Preferably, the display is updated when either the target orientation and / or information contained in the display, such as the measured value, text, graphics, data, and / or other information, changes.

[0012] According to the invention, the display data for the presentation on the display medium is generated depending on the target orientation. Advantageously, the display data can consist of brightness and / or color values ​​for image coordinates or pixels of the display medium. If the target orientation has not changed compared to the current orientation of the presentation and / or other content-related information for the presentation has not changed in the meantime, then, according to advantageous embodiments, the display data is not regenerated.

[0013] Depending on the specific implementation, the display can be rotated according to the desired orientation and optionally further customized. For example, it may be necessary to process the display data differently depending on whether it is output in landscape or portrait format. In this context, it may optionally be possible to enlarge, reduce, rearrange, show, hide, and / or otherwise adjust the content of the display depending on the desired orientation.

[0014] According to the invention, the display data is output to the display device. The display device can then show the representation according to the target orientation. The aforementioned steps are preferably designed as a computer-implemented method. This can be carried out, for example, by a data processing device such as an integrated computer or a microcontroller of the measuring instrument. According to other embodiments of the invention, the aforementioned steps can be carried out completely or partially by a server computer that is communicatively connected to the measuring instrument.

[0015] Preferably, a directed path can be derived from the information, running from the person to the display. This directed path can, for example, be the shortest path between the person and the display. The directed path can be derived, for example, from the person's position relative to the display, from the person's direction of gaze, or from other information about the person. The desired orientation of the display is preferably determined as a function of the directed path. Thus, according to the invention, it is possible for the display to be oriented perpendicular or approximately perpendicular to the directed path. A predetermined lower edge of the display is preferably oriented towards the person.

[0016] The desired orientation of the display is preferably determined based on the information to improve its readability for the user. According to embodiments of the invention, improved readability is particularly evident when the display is oriented so that the predetermined lower edge of the display faces the user. According to variants of the invention, improved readability can also occur when the lettering and / or text lines contained in the display can be perceived horizontally or approximately horizontally by the user.

[0017] The environmental data preferably includes camera data, wherein the camera data originates from at least one camera of the measuring device. It is advantageous if the immediate vicinity of the measuring device can be captured in all directions using the at least one camera. According to the invention, several cameras can be provided for this purpose. However, it is advantageous if the at least one camera is a 360° camera. This is a camera with an extended viewing angle. With such a camera, a 360° view around the measuring device can be captured. In this case, preferably only one camera is provided. For the purposes of the present invention, the camera data can be understood to mean image data and / or video data.

[0018] According to a preferred embodiment of the invention, the information is the person's gaze direction. The gaze direction indicates where the person is looking. This allows the determination of the direction and / or angle from which the person is viewing the display. The gaze direction can preferably be encoded as the person's viewing angle and / or as positional information from which the gaze direction can be derived. According to the invention, the viewing angle can be described by means of a vector or in some other way. The positional information preferably indicates the person's position, in particular the position of one or more of the person's eyes. Based on the gaze direction, the desired orientation of the display can be calculated. According to the invention, the directed path discussed above can coincide with the viewing angle and / or be derived from it.According to embodiments of the invention, the target orientation is determined and / or a new orientation of the display on the display medium is only initiated if it is detected that the person's gaze is directed towards the display medium. If, however, the person is not looking at the display medium, the orientation of the display does not necessarily need to be adjusted.

[0019] It is advantageous if the person's gaze direction is determined using an eye-tracking method. According to embodiments of the invention, this can be understood to include, in particular, image processing methods that can derive a gaze direction and / or a viewed point from image data and / or video data. In particular, the position of a pupil and / or the position of the pupil relative to the eye can be evaluated. According to the invention, it is possible to additionally evaluate pupil movements. Furthermore, it is possible to consider the person's head and / or other body parts within the image processing method. Preferably, a light source, which can be an infrared light source, is activated within the framework of the method according to the invention.Advantageously, reflections of the light source on the cornea can be evaluated within the image processing procedure to determine the direction of gaze.

[0020] According to another embodiment of the invention, the information is the position of the person. Preferably, this is the position of the person relative to the measuring device. Optionally, the previously discussed directed path leading from the person to the display can be derived from this position. Depending on this, the display data on the display can be oriented appropriately so that it is easily readable for the person from this position. Other embodiments employ calculation methods in which the directed path is not derived, and the desired orientation is determined in another way depending on the position. The necessary trigonometric and other calculation methods are familiar to those skilled in the art.

[0021] The environmental data advantageously includes distance data, wherein the distance data originates from at least one distance sensor of the measuring device. According to the invention, a distance between the measuring device and an object can be determined by means of a distance sensor. Preferably, distances to objects are detected laterally around the measuring device. This is preferably done on all sides. In this way, it can be determined where the person is located relative to the measuring device. One distance sensor can be used to acquire the distance data, but several distance sensors can also be used.

[0022] According to the invention, the at least one distance sensor of the measuring device can be a radar sensor, an ultrasonic sensor, or a lidar sensor. Alternatively, other sensor types can also be used. The distance sensor can be used to determine the position of the person. It is only necessary to detect distances within the immediate vicinity of the measuring device. Therefore, distance sensors that can only detect distances within this immediate vicinity can optionally be used. According to one embodiment of the invention, measured distances to objects that lie outside this immediate vicinity are discarded. This prevents, for example, the display from being directed towards a person who is so far away from the measuring device that they would not be able to read the display anyway.Preferably, the person's position is determined solely by means of one of the aforementioned distance sensors, and no camera is used. According to other embodiments, a camera can be used as a distance sensor, and the camera can advantageously be a stereo camera.

[0023] The distance data can, for example, include distances measured at different angles around the measuring device. According to one variant of the method, the person's position is derived from this data. According to another possible variant of the invention, the distance data comprises first distance data and second distance data, wherein the first distance data were acquired at a first time point and the second distance data were acquired at a second time point. To determine the person's position, at least one difference between the first distance data and the second distance data is preferably calculated. Based on this at least one difference, a moving object in the immediate vicinity of the measuring device is preferably identified. The position of the moving object is preferably defined as the person's position. Accordingly, the distance measurement is used to check the area around the measuring device for movement.It is assumed that the person moves at least slightly and that the position of objects or other items in the vicinity of the measuring device does not change. This allows the person to be distinguished from objects or other items.

[0024] As explained above, the person's gaze direction or position can be taken into account to determine the desired orientation. However, according to advantageous embodiments of the invention, these approaches can also be combined. Thus, embodiments of the inventive method are conceivable in which both the gaze direction and the location are determined. This allows the desired orientation to be determined more accurately and / or more quickly, if necessary.

[0025] As explained above, the target orientation is determined based on information relating to a person. If several people are in the immediate vicinity of the measuring device, the display is preferably aligned with one of them. According to the invention, a person can be selected from among several people when evaluating the environmental data. This can be done randomly according to the invention. Alternatively, the method could be designed such that the first person who is algorithmically detected during the evaluation of the environmental data is selected. According to another advantageous embodiment, the display is aligned with the person who is closest to the measuring device. According to another advantageous embodiment, the display is aligned with the person whose gaze is directed towards a point that is closest to the display means.

[0026] According to a further advantageous embodiment, when several people are present, the display is aligned according to the person making a gesture. In some embodiments, this gesture can be a predefined gesture. A user who wishes to exclude the display in their direction can thus make the predefined gesture if necessary. In particular, the gesture can be a hand gesture. For example, it is advantageous if the display is aligned according to the person who raises their hand. Alternatively, the recognition of other gestures is also possible (e.g., body posture). Other criteria for selecting the person according to which the target alignment is determined can also be applied according to the invention.

[0027] It is advantageous if the display data is generated in such a way that it is suitable for output on a round, preferably circular, display device. A circular display device can be understood to be, in particular, a display in which the visible display area is circular. This is advantageous because, in this case, changing the orientation only requires rotating the display, and no other adjustment of the display is necessary: ​​With a circular display device, changing the orientation of the display does not cause parts of the display to leave the display area, nor does it require the display to be stretched or compressed depending on the orientation in order to make effective use of the display area. Furthermore, the display is preferably designed to be suitable for output on the round, preferably circular, display device.

[0028] However, it is also possible to generate display data for display devices of other shapes, for example, for display devices with square or rectangular screens. According to embodiments of the invention, the display is therefore stretched and / or compressed depending on the desired orientation. Furthermore, when generating display data for a rectangular display, the content of the display is adjusted depending on the display's aspect ratio and the desired orientation (for example, font size, menu item arrangement, or the like).

[0029] The determination of the target orientation of the display on the display medium is preferably performed continuously or at fixed time intervals. Continuous determination of the target orientation of the display means that the target orientation is constantly recalculated. According to the invention, this can be done without any intervening pauses, or at least without pauses perceptible to a user. Alternatively, the recalculation of the target orientation can be performed at time intervals. For example, the target orientation of the display could be recalculated every 5 seconds. In principle, any time interval can be selected. It is understood that not only the target orientation of the display can be performed at time intervals. According to embodiments of the invention, the evaluation of the environmental data can also be performed at time intervals and / or the generation of the display data can be carried out depending on the target orientation of the display.This can reduce the energy consumption of the measuring device.

[0030] Preferably, the display is switched off, its energy-saving mode is activated, or individual pixels of the display are deactivated if the evaluation of the environmental data shows that no person is in the immediate vicinity of the measuring device or that no person is looking at the display. According to the invention, switching off can be understood as disconnecting the display from its power supply, so that the display enters a switched-off state. According to the invention, energy saving can be understood as putting the display into an energy-saving mode. Alternatively or additionally, switching off the display, its energy-saving mode, or individual pixels of the display are deactivated if it is detected that a person's gaze is not directed at the display.

[0031] According to a further aspect of the invention, a measuring device is proposed, comprising a display means for showing a measured value, a measuring sensor for recording the measured value, at least one unit for recording environmental data, and a data processing device configured to generate display data for the display means according to the method described above. The measuring device is preferably a field device. The measuring device is preferably configured to perform the method described above. According to the invention, the measuring device can be a level gauge, a limit level gauge, a pressure gauge, or any other type of measuring device. The measuring sensor allows the measuring device to detect the measured value, for example, a level, a limit level, or a pressure. It is understood that the measuring device can also be equipped with multiple measuring sensors.

[0032] The display means can show measured values ​​or other information. It is preferably a display, for example an LCD display, a screen, or another type of monitor. The display means is preferably round, and particularly preferably circular. According to the invention, it is possible for the display means to have a circular image area. Alternatively, it is possible to use a commercially available rectangular or square display that is partially covered, so that only a circular portion of the display is visible.

[0033] The environmental data acquisition unit preferably serves the measuring device to record environmental data from which information about a person located in close proximity to the measuring device can be determined. The environmental data acquisition unit is preferably a camera, particularly preferably a 360° camera. However, it can also be a distance sensor. The at least one environmental data acquisition unit is preferably mounted on the top of a housing of the measuring device, for example, to the side of the display, which is preferably also provided on or attached to a top of the housing.

[0034] The display element can be permanently installed in the measuring device, or optionally, it can be detachably attached to the housing of the measuring device. For example, a variant of the invention is conceivable in which the display element can be snapped onto the measuring device. According to the invention, the measuring device can have a light source, which can be, in particular, an infrared light source. This can be especially advantageous when carrying out eye-tracking methods to determine a user's gaze direction.

[0035] Finally, the measuring device is equipped with a data processing device. This can be, for example, a microcontroller, an embedded computer, or the like. The data processing device is configured to perform the procedure described above, so that environmental data from the measuring device can be evaluated and, in particular, a target orientation of a display on the indicator can be determined. For this purpose, the data processing device is preferably coupled to the unit for acquiring environmental data from the measuring device. The data processing device generates display data, which it outputs to the indicator. For this purpose, the data processing device is preferably coupled to the indicator.

[0036] The drawings illustrate advantageous embodiments of the invention by way of example. They show: Fig. 1 a schematic illustration of an embodiment of the measuring device according to the invention in a perspective view, Fig. 2 a schematic illustration of the measuring instrument according to the invention before an alignment of a representation on a display means of the measuring instrument in a view from above, Fig. 3 A schematic illustration of the measuring instrument according to the invention after the orientation of the representation on the display means of the measuring instrument in a top view, Fig. 4 a schematic illustration of a further measuring device according to the invention at a first time point in a top view, Fig. 5 a schematic illustration of the further measuring device according to the invention at a second time point in a view from above, Fig. 6 A schematic illustration of the further measuring instrument according to the invention after an alignment of a representation on a display means of the further measuring instrument according to the invention in a top view, Fig. 7 a flowchart concerning the alignment of a representation on a display device of a measuring instrument with a camera for recording environmental data and Fig. 8 a flowchart concerning the alignment of a representation on a display device of a measuring instrument with a lidar sensor for recording environmental data.

[0037] Fig. Figure 1 shows a schematic illustration of an embodiment of the measuring device 1 according to the invention in a perspective view. The measuring device 1 has a radar sensor for level measurement. The measuring device 1 also has a housing 2 in the top of which a display 3 is integrated. The display 3 is an LCD touch panel. It displays a level measured by the measuring device 1. The measuring device 1 can also be operated via the LCD touch panel. The measuring device 1 is also equipped with a camera 4. This is a 360° camera that allows the surroundings of the measuring device 1 to be captured. A person's gaze 5 is directed from an eye position 6 of the person towards the display 3, where the eye position 6 is symbolized by a cross. A display 7 on the display 3, which shows the measured level and other device information, is not correctly oriented towards the person.

[0038] Fig. Figure 2 shows a schematic illustration of the measuring device 1 according to the invention before the display 7 is aligned on the display medium 3 of the measuring device 1, in a top view. The person's eye position 6 is to the left of the measuring device 1. Thus, the display 7 on the display medium 3 of the measuring device 1 is not horizontally aligned with the person's gaze direction 5 and is difficult to read from the person's eye position 6. The camera 4 of the measuring device 1 detects the person's eyes. The microcontroller evaluates camera data from the camera 4, determines the gaze direction 5 using an eye-tracking method, and, based on this, determines a target alignment for the display 7.

[0039] Fig. Figure 3 shows a schematic illustration of the measuring device 1 according to the invention after the alignment of the display 7 on the display medium 3 of the measuring device 1, in a top view. After the target alignment of the display 7 has been determined, the microcontroller of the measuring device 1 generates display data for the display medium 3. The display data is generated based on the current data state of the measuring device 1, taking into account the current fill level, other device information, and the target alignment. The microcontroller outputs the display data to the display medium 3, which then displays the display 7. The display 7 is now aligned horizontally to the viewing direction 5 of the person and is therefore easily readable by the person.

[0040] Fig. Figure 4 shows a schematic illustration of another measuring device 1 according to the invention at a first time point in time in a top view. The further measuring device 1 has a radar sensor for level measurement. On the upper side of a housing 2 of the measuring device 1 are a display means 3 and a lidar sensor 8. This can detect distances of objects to the measuring device 1 in all directions. A person is located in the immediate vicinity of the measuring device 1; their eye position 6 is represented by a cross. The display means 3 shows a representation 7 that is not oriented towards the eye position 6. Two stationary posts 9 are also located in the immediate vicinity of the measuring device 1.

[0041] To correctly align the representation 7 with the person, the person's position relative to the measuring device 1 must be determined. This can only be done using the lidar sensor 8 if the person is distinguished from the posts 9. A microcontroller in the measuring device 1 evaluates distance data that the lidar sensor 8 initially records. The microcontroller identifies three objects: the posts 9 and the person.

[0042] Fig. Figure 5 shows a schematic illustration of the further measuring device 1 according to the invention at a second time point in a top view. The person has changed their position, which is recognizable by the changed eye position 6. The microcontroller of the further measuring device 1 evaluates distance data that the lidar sensor 8 acquires at the second time point. The microcontroller thus again identifies three objects, namely the posts 9 and the person. The microcontroller now evaluates differences between the positions of the objects at the first time point and the second time point. The evaluation shows that the object at eye position 6 has moved. This is therefore the person. If the person is looking at the display 3 of the further measuring device 1, their gaze direction 5 extends from eye position 6 to the display 3.Depending on the position of the person, the microcontroller determines a target orientation for the display 7 on the display device 3.

[0043] Fig. Figure 6 shows a schematic illustration of the further measuring device 1 according to the invention after the representation 7 has been aligned on the display means 3 of the further measuring device 1 according to the invention, in a top view. After the target orientation of the representation 7 has been determined, the microcontroller of the further measuring device 1 generates display data for the display means 3. The microcontroller outputs the display data to the display means 3, which then displays the representation 7. The representation 7 is now aligned horizontally with the direction of view 5 of the person and is therefore easily readable for the person.

[0044] Fig. Figure 7 shows a flowchart concerning the alignment of a display on the screen of a measuring device with a camera for capturing environmental data. The measuring device includes a data processing unit. In a receive step 10, the data processing unit receives environmental data captured by the measuring device. This data consists of image data captured by the camera, representing the immediate vicinity of the measuring device. In an evaluation step 11, the data processing unit determines the viewing direction of a person in this immediate vicinity. Depending on the viewing direction, the data processing unit determines a target orientation for the display on the measuring device's screen. This occurs in an alignment step 12. Depending on the target orientation, the data processing unit generates display data for the display in a generation step 13.Finally, in output step 14, the data processing device outputs the display data to the display device. The described process then begins again, so that, if necessary, the orientation of the display can be adjusted in response to a change in the person's viewing direction.

[0045] Fig.Figure 8 shows a flowchart relating to the alignment of a display on a measuring device with a lidar sensor for acquiring environmental data. The measuring device includes a data processing device. In a first reception step 15, the data processing device receives environmental data acquired by the measuring device. This data consists of distance data from the immediate vicinity of the measuring device, acquired by the lidar sensor at a first time point. In a second reception step 16, the data processing device receives further distance data from the immediate vicinity of the measuring device, acquired by the lidar sensor at a second time point. In an evaluation step 11, the data processing device determines the position of a person in the immediate vicinity. For this purpose, differences between the distance data acquired at the first and second time points are evaluated.Differences indicate movement, from which a person's position in the immediate vicinity can be deduced. Depending on the person's position, the data processing device determines a target orientation for the display. This occurs in an alignment step 12. Depending on the target orientation, the data processing device generates display data for the display of the measuring device in a generation step 13. Finally, the data processing device outputs the display data to the display in an output step 14. The described process then begins again, so that the orientation of the display can be adjusted, if necessary, in response to a change in the person's position. Reference symbol list 1 measuring device 2 cases 3 Display devices 4 cameras 5 View direction 6 Eye position 7. Presentation 8 Lidar sensor 9 posts 10 Reception step 11th evaluation step 12th alignment step 13th production step 14 Output step 15 First reception step 16 Second reception step QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2017 204 980 B3

[0005]

Claims

[1] Method for generating display data for a display means (3) of a measuring instrument (1), comprising the steps: - Receipt of environmental data recorded by the measuring device (1), - Evaluation of environmental data to determine information concerning a person who is in close proximity to the measuring device (1), - Determination of a target orientation of a representation (7) on the display medium (3) depending on the information, - Generation of the display data for the presentation (7) on the display medium (3) depending on the target orientation, and - Output of the display data to the display device (3). [2] Method according to claim 1, characterized by , that a directed path can be derived from the information, which runs from the person to the display device (3). [3] Method according to any one of the preceding claims, characterized by, that the target orientation is determined depending on the information in such a way as to result in improved readability of the presentation (7) for the person. [4] Method according to any one of the preceding claims, characterized by that the environmental data includes camera data, wherein the camera data originates from at least one camera (4) of the measuring device (1). [5] Method according to claim 4, characterized by that at least one camera (4) is a 360° camera. [6] Method according to any one of the preceding claims, characterized by , that the information is a direction of view (5) of the person. [7] Method according to claim 6, characterized by , that the gaze direction (5) of the person is determined by means of an eye-tracking method. [8] Method according to any one of claims 1 to 5, characterized by that the information represents a person's position. [9] Method according to any one of claims 1 to 5 or according to claim 8, characterized by, that the environmental data includes distance data, wherein the distance data originates from at least one distance sensor of the measuring device (1). [10] Method according to claim 9, characterized by , that at least one distance sensor of the measuring device (1) is a radar sensor, an ultrasonic sensor or a lidar sensor. [11] Method according to claim 8 and according to one of claims 9 or 10, characterized by , that the distance data comprise first distance data and second distance data, wherein the first distance data were recorded at a first time point, wherein the second distance data were recorded at a second time point, and wherein the following steps are carried out to determine the position of the person: - Determination of at least one difference between the first distance data and the second distance data, - Identification of a moving object in the immediate vicinity of the measuring instrument (1) based on at least one difference, and - Defining the position of the moving object as the position of the person. [12] Method according to any one of the preceding claims, characterized by , that the display data is generated in such a way that it is suitable for output on a round, preferably circular, display means (3). [13] Method according to any one of the preceding claims, characterized by , that the determination of the target orientation of the display (7) on the display medium (3) is carried out continuously or at fixed time intervals. [14] Method according to any one of the preceding claims, characterized by, that switching off the display device (3), saving energy in the display device (3) or deactivating pixels of the display device (3) is initiated if the evaluation of the environmental data shows that there is no person in the immediate vicinity of the measuring device (1) or that no person is looking at the display device (3). [15] Measuring instrument (1) comprising a display means (3) for displaying a measured value, a measuring sensor for recording the measured value, at least one unit for recording environmental data and a device for data processing which is configured to generate display data for the display means (3) according to the method according to any one of claims 1 to 14.

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