Positioning device and positioning method

Abstract

To improve the efficiency of positioning measurement points. [Solution] The positioning device 1 includes a laser level 2 that emits laser light at a predetermined irradiation angle, and a laser level 2. The laser level 2 irradiates a laser line toward the room boundary line BL where two planes intersect. The inter-laser distance, which is the distance between the laser lines, is calculated based on the irradiation angle and the reference distance, and the laser level 2 is controlled to irradiate multiple laser reference lines onto the floor surface 11 at equal division angles that divide the inter-laser distance into multiple equal parts. Measurement points P1 to P5 are included at the intersections of the laser reference lines extending in multiple directions.

Description

Technical Field

[0005]

[0001] The present disclosure relates to a device for determining the position of a measurement point used in an acoustic survey and a method for determining the position thereof.

Background Art

[0002] In a building such as a house, it is necessary to consider the sound insulation performance design and the selection of materials and structures so that sounds from adjacent rooms, sounds from upper and lower floors, etc. do not spread. When evaluating the sound insulation performance, it is required to accurately measure the sound insulation degree such as the sound pressure level between adjacent rooms and the impact sound on the floor. As an acoustic survey for evaluating such sound insulation performance, for example, in accordance with standards such as JIS A 1417:2000 "Method for Measuring Airborne Sound Insulation Performance of Buildings", a sound source device is installed in one sound source room of adjacent living rooms to generate a test sound, and the sound pressure level of the test sound is calculated at a plurality of measurement points in the sound source room and the sound receiving room, and a method for calculating the sound pressure level difference between the sound source room and the sound receiving room is available.

[0003] Conventionally, when conducting this type of acoustic survey, there has been a situation where multiple people have to jointly determine the positions of the measurement points. In that case, for example, a measuring tape is applied diagonally in a living room, the measured length is calculated to be divided into two equal parts or four equal parts, etc., and while measuring again with the measuring tape, a tape or the like is manually pasted at the determined position to determine the positions of a plurality of measurement points.

[0004] For example, as described in Patent Document 1, a method has been proposed in which laser light is irradiated onto a flat surface such as the ceiling surface of a living room to display a plurality of light spots at arbitrary separation dimensions and to locate the driving-in positions of support fittings or the like.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

[0006] The aforementioned acoustic survey requires setting up five or more measurement points spaced apart at a predetermined distance and distributed evenly in space. However, a technique for accurately and efficiently determining such multiple measurement points has not yet been established, and there was a need to improve the efficiency and reduce the labor involved in the work.

[0007] This disclosure aims to provide a positioning device and positioning method that can enable at least one of the following: increased efficiency, reduced labor, or improved accuracy in positioning measurement points for acoustic surveys. [Means for solving the problem]

[0008] To achieve the above objective, this disclosure provides a positioning device for determining a plurality of measurement points to be evenly distributed in a room, comprising: a laser level installed on the floor surface and emitting laser light at a predetermined irradiation angle; a control unit for controlling the laser level; and a storage unit for storing at least a reference distance, which is the vertical or horizontal distance from the laser level to the laser beam irradiation surface, and the laser beam irradiation angle, wherein the laser level emits laser light directed toward the room boundary line formed by the intersection of the irradiation surface and a vertical or horizontal plane continuous with the irradiation surface, thereby forming a linear laser marking line. When the distance between the laser lines that are irradiated and coincide with the start and end points of the room boundary line is defined as the inter-laser distance, the control unit calculates the inter-laser distance based on the irradiation angle of the laser lines and the reference distance, calculates the equal division angle which is the irradiation angle of the laser beams that divides the inter-laser distance into multiple equal parts, and controls the laser leveler to irradiate the irradiation surface with multiple laser reference lines using the laser beams at the equal division angles, so that the irradiation surface is irradiated with the laser reference lines extending in multiple directions, and the measurement point is included in the intersection of the multiple laser reference lines.

[0009] Furthermore, in the positioning device, the laser marking line is preferably projected along the room boundary line where the wall surface of the room and the floor surface intersect, and the laser marking device preferably measures the distance to the floor surface as the vertical distance by using a vertical laser beam that projects laser light in the vertical direction.

[0010] Furthermore, in the positioning device, the laser marking line may be projected along the room boundary line where two adjacent wall surfaces intersect, and the laser marking device may measure the distance to the wall surface as the horizontal distance by projecting a horizontal laser beam in the horizontal direction.

[0011] Furthermore, in the positioning device, it is preferable that the control unit divides the calculated inter-laser distance into a predetermined number of sections to calculate the equal division distance, and when the equal division distance is equal to or greater than a first threshold, calculate the equal division angle that divides the inter-laser distance into the predetermined number of sections.

[0012] In that case, the intersection of the multiple laser reference lines includes the center point on the floor surface as one of the measurement points, and the multiple measurement points are points that are separated from each other by a second threshold or more.

[0013] Furthermore, in the positioning device, it is preferable that the control unit calculates the equal division distance by dividing the calculated inter-laser distance by a predetermined number of sections, and when the equal division distance is less than the first threshold, calculates the inter-laser distance corrected by a distance shorter by the first threshold from the start point and the end point of the room boundary line to the room side, which will be a wall reflection section, and calculates the equal division angle by dividing the corrected inter-laser distance by the number of sections obtained by subtracting each of the wall reflection sections from the predetermined section, and controls the laser leveling device to irradiate a plurality of laser reference lines with laser light including both ends of the corrected inter-laser distance and laser light at the equal division angle.

[0014] Furthermore, the method for positioning measurement points using the aforementioned positioning device also falls within the scope of the technical concept of this disclosure. In other words, a positioning device equipped with a laser level that emits laser light is used to determine a plurality of measurement points to be evenly distributed in a room, comprising the steps of: installing the laser level on the floor surface of the room, irradiating laser light toward an irradiation surface to obtain a reference distance which is the vertical or horizontal distance between the irradiation surface and the laser level; irradiating a linear laser line with laser light directed toward a room boundary line formed by the intersection of two planes, the irradiation surface and a vertical or horizontal plane continuous with the irradiation surface, to obtain the irradiation angle of the laser line; calculating the inter-laser distance based on the irradiation angle of the laser line and the reference distance, with the distance of the laser line that coincides with the start and end points of the room boundary line being the inter-laser distance; and irradiating a plurality of laser reference lines with laser light that divides the inter-laser distance into a plurality of equal parts, and irradiating the irradiation surface with the laser reference lines extending in a plurality of directions, wherein the measurement points are determined at the intersections of the plurality of laser reference lines. [Effects of the Invention]

[0015] According to the configuration of this disclosure, it is possible to improve the efficiency and labor involved in positioning measurement points, or to improve the accuracy of determining measurement points. [Brief explanation of the drawing]

[0016] [Figure 1] This is a schematic diagram illustrating the general configuration of a measurement point positioning device and positioning method according to Embodiment 1 of this disclosure. [Figure 2] This is a block diagram showing the electrical configuration of the positioning device. [Figure 3] This is a schematic floor plan showing the living space in Figure 1. [Figure 4] This is an explanatory diagram schematically showing the AA section in Figure 3. [Figure 5] This is an explanatory diagram showing one step in the positioning method. [Figure 6] This is an explanatory diagram showing the next step after Figure 5. [Figure 7] It is a flowchart showing the positioning method of Embodiment 1. [Figure 8] It is an explanatory diagram schematically showing one step of the positioning method according to Embodiment 2. [Figure 9] It is an explanatory diagram schematically showing one step of the positioning method according to Embodiment 3. [Figure 10] It is an explanatory diagram showing the next step of FIG. 9. [Figure 11] It is a flowchart showing the positioning method according to Embodiment 3.

Mode for Carrying Out the Invention

[0017] The positioning device 1 for measurement points and the positioning method using the same according to the embodiments of the present disclosure will be described with reference to the drawings.

[0018] (Embodiment 1) FIG. 1 is an explanatory diagram schematically showing the schematic configuration of the positioning device 1 for measurement points and the positioning method according to Embodiment 1, and FIG. 2 is a block diagram showing the electrical configuration of the positioning device 1.

[0019] Acoustic survey methods for evaluating sound insulation performance are standardized by JIS (Japanese Industrial Standards). For example, surveys are conducted in accordance with standards such as JIS A 1417:2000 "Method for measuring the airborne sound insulation performance of buildings," JIS A 1418-1:2000 "Method for measuring the floor impact sound insulation performance of buildings - Part 1: Method using a standard lightweight impact source," JIS A 1418-2:2000 "Method for measuring the floor impact sound insulation performance of buildings - Part 2: Method using a standard heavy impact source," JIS A 1419-1:2000 "Method for evaluating the sound insulation performance of buildings and building components - Part 1: Airborne sound insulation performance," and JIS A 1419-2:2000 "Method for evaluating the sound insulation performance of buildings and building components - Part 2: Floor impact sound insulation performance." A designated sound level meter is used to measure the sound pressure level, and prior to measurement, the measurement points in the room to be evaluated are determined. Regarding the measurement points, it is stipulated that at least five measurement points should be spatially evenly distributed, with each point being at least 0.5 m away from room boundaries, diffusers, etc., and at least 0.7 m away from the others.

[0020] The positioning device 1 is a device for determining the positions of multiple measurement points (e.g., measurement points P1 to P5) in a room such as a living room 10, which is a sound receiving room or sound source room, when measuring the airborne sound insulation performance of walls, floors, doors, etc. between two rooms in a building under diffuse sound field conditions. The positioning device 1 according to the example configuration is configured to include a laser level 2, a control unit 3, a storage unit 4, an operation unit 5, and the like, as shown in Figure 2.

[0021] The laser level 2 is capable of emitting laser light from the irradiation unit 23 at a predetermined irradiation angle. The laser level 2 is also equipped with an angle detection unit 21 for detecting the irradiation angle of the laser light and a measurement unit 22 for measuring the distance from the installation point to the irradiation position.

[0022] The control unit 3 controls the laser level 2 based on the detection results of the angle detection unit 21 and the measurement unit 22. The storage unit 4 stores the reference distance D1, which is the vertical or horizontal distance from the laser level 2 to the laser beam irradiation surface. The reference distance D1 is measured by the measurement unit 22 and output. The storage unit 4 also stores the irradiation angle of the laser beam emitted from the irradiation unit 23. The irradiation angle is detected by the angle detection unit 21 and output. Various storage means such as HDD, CD, and memory card can be used for the storage unit 4. The storage unit 4 may be detachable from the laser level 2, or it may be capable of sending data to an external storage device or external data processing device via a communication means (not shown). The operation unit 5 can serve as both a display panel and an operation panel.

[0023] As shown in Figure 1, the laser level 2 is installed near the center of the floor surface 11 of the living room 10 and is capable of emitting multiple linear laser beams. The device is configured to determine measurement points P1 to P5 at the intersections of these laser beams. In this case, the living room 10 is surrounded, for example, by the floor surface 11, four walls rising from the floor surface 11 (walls 12 to 15 shown in Figure 3), and a ceiling surface 16 parallel to the floor surface 11.

[0024] In this embodiment, the case in which measurement points P1 to P5 are determined on the floor surface 11, with the floor surface 11 being the irradiation surface, will be described. Room boundary lines BL are formed between the floor surface 11 and each wall surface that is continuous with and perpendicularly intersects the floor surface 11. The room boundary line BL is defined as the line where two continuous planes constituting the living room 10 intersect.

[0025] Figure 3 is a floor plan of the living room 10 shown in Figure 1, Figure 4 is an explanatory diagram schematically showing the AA section in Figure 3, Figure 5 is an explanatory diagram of one step in the positioning method shown by the AA section, and Figure 6 is an explanatory diagram showing the next step in Figure 5.

[0026] As shown in Figure 3, the laser level 2 installed on the floor surface 11 of the living room 10 projects multiple laser lines L1 and L2, for example. The laser level 2 does not need to be installed at the exact center position on the floor surface 11; it is sufficient if it is installed near the center.

[0027] Laser lines L1 and L2 are illuminated by laser light directed towards the room boundary line BL, and are shown linearly along the room boundary line BL. Laser line L1 is illuminated towards the room boundary line BL extending in the Y direction, and laser line L2 is illuminated towards the room boundary line BL extending in the X direction. Both laser lines L1 and L2 are illuminated from one end to the other end of the room boundary line BL. In Figure 3, the laser light emitted from the laser leveler 2 in the X direction is shown by dots (shading), and the laser light emitted in the Y direction is shown by light gray.

[0028] As a result, in the example configuration, laser light is irradiated in multiple directions, forming four laser marking lines L1 and L2. Specifically, laser light is irradiated towards the room boundary lines BL where the floor surface 11 and wall surface 12, floor surface 11 and wall surface 13, floor surface 11 and wall surface 14, and floor surface 11 and wall surface 15 of the room 10 intersect, forming two laser marking lines L2 in the X direction of the room 10 and two laser marking lines L1 in the Y direction.

[0029] These laser marking lines L1 and L2 do not necessarily have to be projected simultaneously. One set of laser marking lines L1, L1 may be projected onto two opposing room boundary lines BL (for example, room boundary lines BL extending in the Y direction), and then another set of laser marking lines L2, L2 may be projected onto the other two opposing room boundary lines BL (for example, room boundary lines BL extending in the X direction).

[0030] More specifically, as shown in Figure 4, laser lines L1, L1 are projected from the irradiation unit 23 of the laser level 2. As shown in Figure 5, the laser lines L1, L1 are projected at irradiation angles θ1 and θ2, respectively, with respect to the vertical direction.

[0031] Referring to Figure 2, in the laser leveling device 2, the angle detection unit 21 detects the irradiation angles θ1 and θ2 of the laser leveling line L1. The irradiation angles θ1 and θ2 are output to the control unit 3.

[0032] Furthermore, the laser level 2 uses the floor surface 11 as the irradiation surface and, as shown in Figure 5, irradiates the floor surface 11 with a vertical laser beam 24 from the irradiation unit 23. Based on the irradiated vertical laser beam 24, the measurement unit 22 measures the distance between the floor surface 11 and the irradiation unit 23 as the vertical distance (height) h. The vertical distance h is one of the reference distances D1 and is output to the control unit 3.

[0033] Here, the distance between two pairs of laser marking lines L1, L1, each irradiated along two opposing room boundary lines BL, is defined as the inter-laser distance D2. That is, referring to Figure 3, the inter-laser distance D2 corresponds to the distance between a laser marking line L1 extending in the Y direction and including the starting point (one end) of the room boundary line BL extending in the X direction, and a laser marking line L1 extending in the Y direction and including the ending point (the other end) of the room boundary line BL. Therefore, in the example embodiment, the inter-laser distance D2 corresponds to the length (distance) of the laser marking line L2 in the X direction.

[0034] The control unit 3 calculates the inter-laser distance D2 based on the irradiation angles θ1 and θ2 and the vertical distance h as the reference distance D1. Furthermore, based on the calculated inter-laser distance D2, the control unit 3 controls the laser leveler 2 to emit laser beams that divide the inter-laser distance D2 into multiple equal parts.

[0035] The calculated laser-to-laser distance D2 is divided equally into a predetermined number of sections, and the equal division distances are calculated. For example, to determine five measurement points P1 to P5 to be evenly distributed in room 10, the predetermined number of sections is set to "4," and the positions that divide the laser-to-laser distance D2 into four equal parts are determined. As shown in Figure 6, the equal division angle (e.g., angle α), which is the irradiation angle of the laser beam that divides the laser-to-laser distance D2 into four equal parts, is calculated, and the laser beam is irradiated at that equal division angle. Distance D3 represents the equal division distance, which is the distance that divides the laser-to-laser distance D2 into four equal parts.

[0036] As shown in Figure 4, between a pair of laser marking lines L1, L1, three laser reference lines L11, L12, and L13 are projected, dividing the laser-to-laser distance D2 into four equal parts. The laser reference lines L11, L12, and L13 are projected at equal intervals from each other (distance D3 shown in Figure 6). As a result, as shown in Figure 3, three laser reference lines L11, L12, and L13 are projected onto the floor surface 11 of the living room 10.

[0037] Similarly, another set of laser marking lines L2, L2 are projected onto the other two room boundary lines BL along the X direction, and three laser reference lines L21, L22, L23 are projected at equal angles that divide the distance between these laser marking lines L2, L2 into four equal parts. On the floor surface 11, three laser reference lines L11, L12, L13 extending in the Y direction and three laser reference lines L21, L22, L23 extending in the X direction are formed intersecting each other.

[0038] Each intersection of the irradiated laser reference lines L11-L13 and L21-L23 contains measurement points P1-P5 that can be used for acoustic surveys. As shown in Figure 1, five measurement points P1-P5 can be determined from multiple intersections. Measurement point P5 is the center point of the floor surface 11 of the living room 10, and measurement points P1-P4 are evenly distributed around the center point P5. These multiple measurement points P1-P5 can be five points where the distance between adjacent measurement points is 0.7m or more.

[0039] Furthermore, if the irradiation area of ​​the laser beam from the laser level 2 does not reach from one end to the other end of the room boundary line BL, the laser beam may be irradiated toward the room boundary line BL in multiple passes, and the distance calculated based on the result of each pass may be added together to calculate the laser-to-laser distance D2. Alternatively, the laser-to-laser distance D2 can be considered as the distance from one end to the other of the irradiation area of ​​the laser beam irradiated toward the room boundary line BL between the floor surface 11 and the wall surface 14 (or floor surface 11 and wall surface 15), and the laser-to-laser distance D2 may be calculated based on an obtuse triangle (see Figure 5) with the laser level line L2 that coincides with the room boundary line BL as the longer side.

[0040] Figure 7 is a flowchart illustrating the positioning method according to Embodiment 1. The operation of the positioning device 1 will be explained with reference to Figure 7.

[0041] For the acoustic survey, a laser level 2 is installed in the room 10, and a vertical laser beam 24 is projected from the irradiation unit 23 onto the floor surface 11. The measurement unit 22 measures the vertical distance h as a reference distance D1 using the vertical laser beam 24. The control unit 3 acquires the vertical distance h measured by the measurement unit 22 (step S11).

[0042] The control unit 3 controls the laser level 2 to project laser lines L1, L1 from the irradiation unit 23 (step S12). The angle detection unit 21 detects the irradiation angles θ1, θ2. The control unit 3 acquires the irradiation angles θ1, θ2 (step S13).

[0043] The same operation in the positioning device 1 is performed for the laser marking lines L2, L2. Note that step S11, which acquires the vertical distance h, may be a later step than step S13, which acquires the irradiation angles θ1, θ2, and steps S11 to S13 are not limited to this order.

[0044] The control unit 3 calculates the inter-laser distance (D2), which is the distance between two laser marking lines L1 and two laser marking lines L2 that are irradiated along two opposing room boundary lines BL, based on the vertical distance h and irradiation angles θ1 and θ2 (step S14). The vertical distance h, irradiation angles θ1 and θ2, and inter-laser distance (D2) are stored in the storage unit 4.

[0045] The control unit 3 calculates the equal division angles, which are the irradiation angles of the laser beams that divide the inter-laser distance D2 into multiple equal parts (step S15). In the example shown in Figure 4, five measurement points P1 to P5 are positioned to be evenly distributed in the living room 10, and therefore, the equal division angles that divide the inter-laser distance D2 into four equal parts are calculated.

[0046] Next, multiple laser reference lines L11-L13 extending in the Y direction are irradiated at the calculated equally divided angles (step S16). Similarly, multiple laser reference lines LED21-L23 are irradiated in the remaining X direction by calculating equally divided angles (step S17). This allows multiple laser reference lines L11-L13 and L21-L23 to intersect and form, and five measurement points P1-P5 can be determined from these intersection points.

[0047] This ensures that measurement points P1 to P5 are evenly distributed within the room 10, making them suitable for various acoustic surveys. The positioning of these measurement points P1 to P5 does not require multiple people working together, allowing for quick and efficient work and labor savings. Furthermore, the measurement points P1 to P5 can be accurately calculated without the need for measuring tapes or distance sensors to measure the distance from the laser level 2 to the laser lines L1 and L2.

[0048] (Embodiment 2) Figure 8 schematically shows one step of the positioning method according to Embodiment 2, and is an explanatory diagram corresponding to the AA cross-section in Figure 3.

[0049] Multiple measurement points used in acoustic surveys can be determined not only on the floor surface 11 of the living room 10, but also on the wall surfaces 12-15 in the same manner as shown in Embodiment 1. For example, as shown in Figure 8, the laser level 2 can use the wall surface 13 as the laser beam irradiation surface.

[0050] The laser level 2 projects laser lines L3, L3 with laser light directed towards the room boundary line BL where the floor surface 11 and the wall surface 13 intersect, and the room boundary line BL where the wall surface 13 and the ceiling surface 16 intersect. In this case, the device is configured to measure and acquire the horizontal distance d between the irradiation unit 23 and the wall surface 13 as the reference distance D1.

[0051] The control unit 3 calculates the inter-laser distance D21, which is the distance between the irradiated laser marking lines L3 and L3, based on the horizontal distance d and the irradiation angles of the laser marking lines L3 and L3. The inter-laser distance D21 corresponds to the distance between a laser marking line L3 that extends in the Y direction and includes the starting point of the room boundary line BL that extends in the height direction, and a laser marking line L3 that extends in the Y direction and includes the ending point of the room boundary line BL. The control unit 3 also irradiates the wall surface 13 with laser reference lines L31 to L33 at equal division angles that divide the inter-laser distance D21 into multiple equal parts (for example, into four equal parts). The laser reference lines L31 to L33 are formed as lines extending in the horizontal direction.

[0052] Similarly, laser marking lines are projected onto the left and right room boundary lines (not shown) that extend in the height direction of the wall surface 13, and the distance between lasers (in this case, the horizontal distance) is calculated. Multiple laser reference lines extending vertically at equally divided angles are then projected. In this way, multiple laser reference lines extending horizontally and vertically can be projected onto the wall surface 13, and measurement points can be determined from the intersections of the laser reference lines.

[0053] Alternatively, the laser-to-laser distance D21 may be considered as the distance from one end to the other of the irradiation area of ​​the laser beam directed toward the room boundary line BL between adjacent wall surfaces, and the laser-to-laser distance D21 may be calculated based on an obtuse triangle (see Figure 5) with the laser marking line that coincides with the room boundary line BL extending in the height direction as its longer side.

[0054] (Embodiment 3) Figure 9 schematically shows one step of the positioning method according to Embodiment 3 and is an explanatory diagram corresponding to cross-section AA in Figure 3. Figure 10 is an explanatory diagram showing the next step after Figure 9, and Figure 11 is a flowchart showing the positioning method according to Embodiment 3.

[0055] As mentioned above, according to JIS, the multiple measurement points evenly distributed in the living room 10 must be at least five points, each at least 0.5 m away from the room boundary, diffuser, etc., and at least 0.7 m away from each other. Here, the value of 0.5 m is the standard distance at which reflected sound from walls, etc., intersecting the surface to be measured affects the evaluation at the measurement point. However, depending on the size and shape of the living room 10, when the laser-to-laser distance D2 is divided into multiple equal parts, it may not be possible to arrange the measurement points at least 0.5 m away from the walls 13, etc.

[0056] Therefore, in Embodiment 3, when dividing the laser-to-laser distance D2 into a predetermined number of equal sections, it is determined whether each of the divided positions is at least 0.5 m away from the wall surface 13, which is the room boundary, and whether it is a wall reflection section. That is, 0.5 m is set as the first threshold, and it is determined whether the distance of the equal divisions obtained by dividing the predetermined number of sections is greater than or equal to the first threshold, or less than the first threshold, and distance correction is applied as necessary.

[0057] For example, when the floor surface 11 is used as the irradiation surface, referring to Figures 9 and 11, the steps of measuring the vertical distance h with a vertical laser beam 24 directed at the floor surface 11 and obtaining the vertical distance h as a reference distance D1, step S22 irradiating the laser marking lines L1, L1, step S23 detecting and obtaining the irradiation angles (θ1, θ2) of the laser marking lines L1, L1 using the angle detection unit 21, and step S24 calculating the inter-laser distance D2, which is the distance between the laser marking lines L1 (and between the laser marking lines L2) based on the vertical distance h and the irradiation angles (θ1, θ2), can be performed in the same manner as in Embodiment 1.

[0058] Next, the control unit 3 divides the calculated laser-to-laser distance D2 into a predetermined number of equal parts to calculate the equal division distance D3 (step S25). For example, if five measurement points to be evenly distributed in the living room 10 are to be positioned on the floor surface 11, the laser-to-laser distance D2 is divided into four equal parts to calculate the equal division distance D3, as shown in Figure 9.

[0059] Here, the control unit 3 determines whether the equal division distance D3 obtained by dividing the laser-to-laser distance D2 into multiple equal parts is greater than or equal to the first threshold of 0.5m (step S26).

[0060] If the equal division distance D3 is 0.5m or more (Yes in step S26), the same as in Embodiment 1, the equal division angles that divide the laser-to-laser distance D2 into four equal parts are calculated (step S27). As shown in Figure 4, etc., multiple laser reference lines L11 to L13 are irradiated with the calculated equal division angles (e.g., angle α) (step S28), and laser reference lines L21 to L23 are also irradiated in other intersecting directions (step S29), and measurement points P1 to P5 can be determined from their intersection points.

[0061] If the equal division distance D3 is less than 0.5m (No in step S26), distance correction is performed. As shown in Figure 10, a distance of 0.5m from the room boundary line BL towards the interior (wall reflection section) is calculated and designated as correction points C1 and C2, respectively. The control unit 3 calculates the distance between correction point C1 and correction point C2 as the corrected inter-laser distance D4 (step S30). This distance correction is based on the requirement that the measurement point should be at least 0.5m away from the wall surface that is the room boundary (e.g., walls 12 and 13), because if the measurement point is too close to the wall surface, reflected sound and other factors will affect the measurement, making accurate evaluation difficult.

[0062] Next, the corrected inter-laser distance D4 is divided equally by the number of sections obtained by subtracting the two sections that will be wall reflection sections from a predetermined number of sections. That is, in this case, the number of sections is set to "2" by subtracting the number of wall reflection sections "2" from the predetermined number of sections "4", and the equal division angle (for example, angle β) which is the irradiation angle that divides the corrected inter-laser distance D4 into two equal parts is calculated (step S31).

[0063] The control unit 3 controls the laser level 2 to irradiate laser reference lines L41 to L43 at the calculated equally divided angles (step S32). As shown in Figure 10, the laser level 2 irradiates laser reference lines L41 and L43 directed toward correction points C1 and C2, and laser reference line L42 at an equally divided angle (for example, angle β). The laser reference lines L41 to L43 are formed to extend along the Y direction of the floor surface 11.

[0064] The laser reference line L42 is projected so as to include the center position of the corrected inter-laser distance D4. Since the measurement points should be at least 0.7m apart from each other, the equal division distances D5 between laser reference lines L41 and L42, and between laser reference lines L42 and L43, must be at least 0.7m apart from each other. For this reason, it is preferable to set 0.7m as a second threshold for the equal division distance D5, so that a measurement point can be used if it is above the second threshold, and the user is notified if it is below the second threshold. For example, if the equal division distance D5 is less than 0.7m, an alert sound may be emitted.

[0065] Similarly, multiple laser reference lines are irradiated in the X direction (step S33), causing the multiple laser reference lines in the X and Y directions to intersect. The intersection points of the laser reference lines may include five measurement points P1 to P5 based on the corrected inter-laser distance D4. Note that the first threshold value of the equal division distance D3 is not limited to 0.5m, and the second threshold value of the equal division distance dD5 is not limited to 0.7m; these values ​​may be changed to appropriate input values, for example, via the operation unit 5.

[0066] By configuring the system as described above, it is possible to spatially evenly distribute and position five or more measurement points P1 to P5 in the room 10 under evaluation, at least 0.5 m away from room boundaries, diffusers, etc., and at least 0.7 m away from each other. Moreover, there is no need for multiple people to work together on such positioning work, and measurement points can be determined with high accuracy, efficiently and with reduced labor.

[0067] This disclosure is not limited to the embodiments described above, and various modifications are possible without departing from the technical essence thereof. All technical matters included in the technical idea described in the claims are subject to this disclosure. The embodiments described above are preferred examples, but various modifications can be realized from the disclosed content, and such modifications are also included in the technical scope described in the claims.

[0068] Furthermore, the embodiments and other matters disclosed herein are based on the technical concepts outlined in the following appendix. It can be understood in this way.

[0069] (Note 1) A positioning device for determining multiple measurement points to be evenly distributed within a room, A laser leveling device is installed on the floor and emits laser light at a predetermined irradiation angle, A control unit for controlling the laser level, The system includes at least a storage unit that stores a reference distance, which is the vertical or horizontal distance from the laser level to the laser beam irradiation surface, and the laser beam irradiation angle. The laser level emits a linear laser line using laser light directed towards the room boundary line formed by the intersection of two planes: the irradiation surface and a vertical or horizontal plane continuous with the irradiation surface. When the distance between the laser marking lines that coincide with the start and end points of the aforementioned room boundary line is defined as the distance between lasers, The control unit, Based on the irradiation angle and reference distance of the laser marking line, the distance between the lasers is calculated. The equal division angles, which are the irradiation angles of the laser beams that divide the distance between the lasers into multiple equal parts, are calculated. The laser leveling device is controlled so that multiple laser reference lines are projected onto the irradiation surface by laser light at the aforementioned equally divided angles. A positioning device characterized in that the irradiation surface is irradiated with laser reference lines extending in multiple directions, and the measurement point is included at the intersection of the multiple laser reference lines.

[0070] (Note 2) In the positioning device described in Appendix 1, The laser marking line is projected along the room boundary line where the wall surface and the floor surface of the room intersect. The laser level is a positioning device characterized by measuring the distance to the floor surface as the vertical distance using a vertical laser beam that irradiates laser light in a vertical direction.

[0071] (Note 3) In the positioning device described in Appendix 1, The laser marking line is projected along the room boundary line where two adjacent wall surfaces intersect. The laser level is a positioning device characterized by measuring the distance to the wall surface as the horizontal distance using a horizontal laser beam that irradiates laser light in the horizontal direction.

[0072] (Note 4) In the positioning device described in any of the appendices 1 to 3, The control unit divides the calculated laser-to-laser distance into a predetermined number of sections to calculate the equal distances, A positioning device characterized by calculating the equal division angle that divides the distance between lasers into a predetermined number of sections when the equal division distance is equal to or greater than a first threshold.

[0073] (Note 5) In the positioning device described in Appendix 4, The intersection of the multiple laser reference lines includes the center point on the floor surface as one of the measurement points. A positioning device characterized in that the multiple measurement points are points that are separated from each other by a second threshold or more.

[0074] (Note 6) In the positioning device described in any of the appendices 1 to 3, The control unit calculates the equal distance obtained by dividing the calculated laser-to-laser distance into a predetermined number of sections, When the aforementioned equal division distance is less than the first threshold, the distance between the lasers is corrected by a distance shorter by the first threshold from the start and end points of the room boundary line, respectively, to the room side, which constitutes a wall reflection section. The angle of equal division is then calculated by dividing the corrected distance between the lasers by the number of sections obtained by subtracting the wall reflection sections from the predetermined section. A positioning device characterized by controlling the laser leveler to irradiate a plurality of laser reference lines with laser light including both ends of the corrected inter-laser distance and laser light at the equally divided angles.

[0075] (Note 7) A positioning method for determining multiple measurement points to be evenly distributed within a room, using a positioning device equipped with a laser level that emits laser light, The steps include: installing the laser level on the floor of the room, irradiating a laser beam toward the irradiation surface, and obtaining a reference distance which is the vertical or horizontal distance between the irradiation surface and the laser level; A step of irradiating a linear laser marking line with laser light directed towards a room boundary line formed by the intersection of the irradiation surface and a vertical or horizontal plane continuous with the irradiation surface, and obtaining the irradiation angle of the laser marking line, A step of calculating the inter-laser distance based on the irradiation angle of the laser marking line and the reference distance, with the distance between the laser marking line and the start and end points of the room boundary line being defined as the inter-laser distance. The process includes irradiating multiple laser reference lines with laser light that divides the distance between the lasers into multiple equal parts, and irradiating the irradiation surface with the laser reference lines extending in multiple directions, A positioning method characterized by determining the measurement point at the intersection of a plurality of laser reference lines. [Explanation of symbols]

[0076] 1. Positioning device 2. Laser level 21 Angle detection unit 22 Measuring part 23 Irradiation area 24 Vertical laser light 3. Control Unit 4 Storage section 5 Control section 10 Room 11 Floor surface 12, 13, 14, 15 Wall surfaces 16 Ceiling surface P1~P5 measurement points BL Room Boundary Line L1, L2 Laser Leveling Lines D1 Reference distance Distance between D2 and D4 lasers Equal distances between D3 and D5

Claims

1. A positioning device for determining multiple measurement points to be evenly distributed within a room, A laser leveling device is installed on the floor and emits laser light at a predetermined irradiation angle, A control unit for controlling the laser level, The system includes at least a storage unit that stores a reference distance, which is the vertical or horizontal distance from the laser level to the laser beam irradiation surface, and the laser beam irradiation angle. The laser level emits a linear laser line using laser light directed towards the room boundary line formed by the intersection of the irradiation surface and a vertical or horizontal plane continuous with the irradiation surface. When the distance between the laser marking lines that coincide with the start and end points of the aforementioned room boundary line is defined as the distance between lasers, The control unit, Based on the irradiation angle and reference distance of the laser marking line, the distance between the lasers is calculated. The equal division angles, which are the irradiation angles of the laser beams that divide the distance between the lasers into multiple equal parts, are calculated. The laser leveling device is controlled so that multiple laser reference lines are projected onto the irradiation surface by laser light at the aforementioned equally divided angles. A positioning device characterized in that the irradiation surface is irradiated with laser reference lines extending in multiple directions, and the measurement point is included at the intersection of the multiple laser reference lines.

2. In the positioning device according to claim 1, The laser marking line is projected along the room boundary line where the wall surface and the floor surface of the room intersect. The laser level is a positioning device characterized by measuring the distance to the floor surface as the vertical distance using a vertical laser beam that irradiates laser light in a vertical direction.

3. In the positioning device according to claim 1, The laser marking line is projected along the room boundary line where two adjacent wall surfaces intersect. The laser level is a positioning device characterized by measuring the distance to the wall surface as the horizontal distance using a horizontal laser beam that irradiates laser light in the horizontal direction.

4. In the positioning device according to claim 1, The control unit divides the calculated laser-to-laser distance into a predetermined number of sections to calculate the equal distances, A positioning device characterized by calculating the equal division angle that divides the distance between lasers into a predetermined number of sections when the equal division distance is equal to or greater than a first threshold.

5. In the positioning device according to claim 4, The intersection of the multiple laser reference lines includes the center point on the floor surface as one of the measurement points. A positioning device characterized in that the multiple measurement points are located at a distance of at least a second threshold from each other.

6. In the positioning device according to claim 1, The control unit calculates the equal distance obtained by dividing the calculated laser-to-laser distance into a predetermined number of sections, When the aforementioned equal division distance is less than the first threshold, the distance between the lasers is corrected by a distance shorter by the first threshold from the start and end points of the room boundary line, respectively, to the room side, and the angle of equal division is calculated by dividing the corrected distance between the lasers by the number of sections obtained by subtracting each of the aforementioned wall reflection sections from the predetermined section. A positioning device characterized by controlling the laser leveler to irradiate a plurality of laser reference lines with laser light including both ends of the corrected inter-laser distance and laser light at the equally divided angles.

7. A positioning method for determining multiple measurement points to be evenly distributed within a room, using a positioning device equipped with a laser level that emits laser light, The steps include: installing the laser level on the floor of the room, irradiating a laser beam toward the irradiation surface, and obtaining a reference distance which is the vertical or horizontal distance between the irradiation surface and the laser level; A step of irradiating a linear laser marking line with laser light directed towards a room boundary line formed by the intersection of the irradiation surface and a vertical or horizontal plane continuous with the irradiation surface, and obtaining the irradiation angle of the laser marking line, A step of calculating the inter-laser distance based on the irradiation angle of the laser marking line and the reference distance, with the distance between the laser marking line that coincides with the start and end points of the room boundary line being defined as the inter-laser distance. The process includes irradiating multiple laser reference lines with laser light that divides the distance between the lasers into multiple equal parts, and irradiating the irradiation surface with the laser reference lines extending in multiple directions, A positioning method characterized by determining the measurement point at the intersection of a plurality of laser reference lines.

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