JP5084058B2 - Target for measurement - Google Patents

Description

  The present invention relates to a measurement target that is attached to a measurement target as a target when measuring a distance to the measurement target.

  Conventionally, for example, for measuring a reflection element (reflecting plate, reflecting prism, etc.) oscillated from a so-called total station (measuring device that measures the distance and angle to a measuring object using light waves, lasers, etc.) and attached to the measuring object. The light wave (or laser etc.) reflected by the target) is detected by the total station, and the distance, horizontal angle, vertical angle, etc. to the reflecting element and the measurement object are measured at the construction site. .

  For example, during work (construction) in which a steel frame is assembled using a crane, etc., are pillars extending in the vertical direction and beams extending in the horizontal direction installed exactly as designed? It is used when confirming etc.

  More specifically, for example, several reflecting elements (measurement targets) are attached to one steel frame to be installed, and the total station irradiates each reflecting element with light waves and detects the reflected light waves, and reflects each reflection. It is used to check whether the steel frame is installed at the designed position without tilting by measuring the distance to the element, horizontal angle, vertical angle, etc.

Here, as a reflective element that is attached to a measurement target and reflects a light wave, for example, there is one described in Patent Document 1.
In Patent Document 1, a sheet-like reflecting prism is attached to the surface, and a reflecting plate having a cross line indicating the center of the target formed on the reflecting prism surface can be adjusted and positioned around a vertical supporting shaft and a horizontal supporting shaft. A coordinate measurement target (see FIGS. 1 to 3 of Patent Document 1) is described which is configured to be supported and to be slid in the vertical support shaft direction so that the position of the cross wire relative to the horizontal support shaft can be adjusted.
Patent Document 1 describes a coordinate measurement target including a prism as a reflection element as a conventional technique (see FIG. 4 of Patent Document 1).

  Patent Document 2 describes a target device used in a non-prism light wave distance measuring device, in which at least one reflecting surface is formed on a base, and a reflecting surface of a reflecting sheet having retroreflection is colored. Have been described.

No. 7-50661 JP 2000-329556 A

  Here, in recent years, the construction period has become longer due to the larger and higher-rise buildings, so there are increasing opportunities for various adverse effects on the neighborhood. If you want to reduce the amount of traffic, or if there is a large amount of daytime passers-by and traffic, such as in urban areas, there is a possibility that accidents or serious problems may occur due to construction, etc. It is also assumed that installation work will be performed.

  In such a case, the measurement using the total station is also performed at night. However, since the surroundings are dark, the measurement target described in Patent Document 1 and Patent Document 2 is used by the operator. It is difficult to discover.

Even if it can be found, there are the following problems.
That is, for example, in order to measure with high accuracy, a collimation mark (reticle) on a measuring device side such as a total station is placed on an alignment mark such as a cross line provided on a measurement target (reflection element). However, in the dark, it is difficult for the operator to recognize the crosshairs (alignment marks) provided on the measurement target (reflective element), and the alignment is good. Since it cannot be performed, it is difficult to measure itself, and even if it can be measured, there is a possibility that the reliability of the measurement accuracy remains doubtful.
Such a fear can occur in other dark places, for example, in construction work such as a tunnel (for example, installation work of a support work).

  For this reason, conventionally, for example, as schematically shown in FIG. 7, measurement work in a dark place is usually performed by two workers, and one worker illuminates with a flashlight or the like as a target for measurement. In addition, the operator can perform measurement by aligning the collimation (rectile) on the measurement device side such as the total station with the alignment mark (such as a cross) of the measurement target. Until then, the troublesome work of continuing to illuminate the measurement target with a flashlight or the like was required.

  However, it is not easy to find all measurement targets affixed to multiple parts with a flashlight etc. in a dark place where the scaffolding is not so good, the light intensity is small and the irradiation range is narrow, especially, When there is a certain distance to the measurement target, or when the measurement target is at a high place, discovery may be difficult.

  Furthermore, even when the measurement target can be found, when the operator visually aligns the collimation (reticle) on the measurement device side such as the total station and the alignment mark (cross character etc.) on the measurement target side. The light quantity of a flashlight or the like is so dark that the operator may not be able to accurately recognize the alignment mark (such as a cross) on the measurement target side and may not be able to collimate.

  In addition, if it is difficult to recognize the alignment mark on the measurement target side and the light intensity of the flashlight is increased by, for example, some method to illuminate the measurement target brightly, this time, the reflective element of the measurement target will be reflected. There is a possibility that the operator may not be able to recognize the alignment mark (such as a crossed letter) of the measurement target due to the influence of the light reflected by the beam, and the collimation cannot be performed.

  By the way, prisms with LED lights (trade name: ST-030L, manufactured by STS Corporation, URL: http://www.sts-s.co.jp/lineup/prism/prism.html) are sold. Some LED lamps flash when they are pressed, making it suitable for cases where it is difficult to find a prism in a dark place such as a tunnel.

  However, this is expensive because it uses a prism. Moreover, in order to attach to a measuring object so that it is suitable for a measurement, some attachment jigs, such as an adapter, are needed, and cost increases and attachment / detachment work becomes complicated.

  In particular, when assembling steel frames etc., it is necessary to attach measurement targets at least near both ends of one beam and to attach to pillars near both ends as well as work time for attachment / detachment. Since it is necessary to attach to a plurality of steel frames in advance in order to reduce the above, the number to be prepared is large and the cost increases.

  In order to reduce the cost, it may be possible to use a relatively small number of prisms with LED lights. There is a situation in which work efficiency is reduced, for example, measurement work is interrupted by such troublesome work.

  Furthermore, in the case of measuring the position and inclination of a column or beam, a structure in which a prism is attached using an adapter or the like is likely to place the measurement target at a position offset from the central axis or surface of the column or beam. There is a situation that the measurement work becomes complicated, for example, the minute needs to be corrected.

  In particular, when performing a large number of measurements, there is a situation in which the prism is attached using an adapter, and the amount of correction is different each time.

  In addition, since the prism is relatively heavy, there is a possibility that the prism may be tilted from the initial mounting position over time, and there is a situation that the mounting work becomes troublesome because it is necessary to firmly support the mounting.

  The present invention has been made in view of such circumstances, and while being a simple and low-cost configuration, an operator can easily recognize the location even in a dark place, and helps alignment in the context of a measuring apparatus. An object of the present invention is to provide a measurement target capable of clearly and accurately recognizing an alignment mark such as a cross character for performing measurement easily and accurately.

For this reason, the present invention
A plate-like measurement target that is attached to a measurement object and includes a reflection sheet that reflects measurement waves emitted from a measurement device,
A light-emitting body that emits light when supplied with power is attached integrally with the measurement target,
While light is emitted from the measurement target to the outside by light emission of the light emitter, the alignment mark with the collimation on the measurement device side provided on the reflection surface of the reflection sheet is illuminated ,
The light emitter is constituted by an LED,
The LED is disposed in the vicinity of the edge of the reflective sheet in the recess provided in the panel to which the reflective sheet is attached,
The light emitted from the LED emits light to the outside, and the alignment mark is illuminated.
A part of the reflection sheet is opened corresponding to the recess, and light is leaked from the opening to the outside .

  In the present invention, the LEDs are respectively provided in substantially central portions of adjacent sides of the reflective sheet, and the corresponding recesses extend in a direction substantially perpendicular to the side on which the LEDs are provided, and below the reflective sheet. It can be characterized by being crossed.

  In the present invention, the opening may be formed so as to constitute a part of the alignment mark.

  In the present invention, the opening may not be opened in a predetermined region in a central portion of the alignment mark.

The present invention also provides:
A plate-like measurement target that is attached to a measurement object and includes a reflection sheet that reflects measurement waves emitted from a measurement device,
A light-emitting body that emits light when supplied with power is attached integrally with the measurement target,
While light is emitted from the measurement target to the outside by light emission of the light emitter, the alignment mark with the collimation on the measurement device side provided on the reflection surface of the reflection sheet is illuminated,
The light emitter is constituted by an LED,
The LED is disposed in a recess provided on the back surface of a transparent member attached to the reflective surface side of the reflective sheet,
The LED emits light to the outside, and the alignment mark is illuminated.

  In the present invention, a region corresponding to a predetermined region of a central portion of the alignment mark of the transparent member may be opened.

  In the present invention, a surface extending outward from the opening may be inclined at a predetermined angle.

  In the present invention, two sets of a pair of LEDs arranged facing each other are provided, and these two sets of LEDs are arranged so as to intersect at approximately 90 degrees so as to correspond to the cross-shaped portion of the alignment mark. It can be characterized by being provided.

  The present invention can be characterized in that it is detachably attached to a measurement object via a magnet that is substantially integral with the measurement target.

  The present invention has been made in view of such circumstances, and while being a simple and low-cost configuration, an operator can easily recognize the location even in a dark place, and can be aligned in relation to a measurement apparatus. Thus, it is possible to provide a measurement target capable of easily and accurately performing measurement by clearly recognizing a mark for alignment such as a cross-shaped character for helping.

It is a whole block diagram which shows roughly the whole structure of the measurement target which concerns on Example 1 of this invention. It is the perspective view which looked at the measurement target of the Example same as the above from diagonally upward (for ease of understanding, the reflection sheet, the EL light emitting panel, and the magnet sheet are shown separately). It is a whole block diagram which shows roughly the whole structure of the measurement target which concerns on Example 2 of this invention. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3 (for easy understanding, a reflective sheet, a styrene panel, and a magnet sheet are shown separately). It is a whole block diagram which shows roughly the whole structure of the measurement target which concerns on Example 3 of this invention. FIG. 6 is a cross-sectional view taken along the line BB in FIG. 5 (for ease of understanding, an acrylic plate, a reflection sheet, an aluminum tape, and a magnet sheet are shown separately). It is the figure which showed typically an example of the measurement operation | work in the conventional dark place.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings. The present invention is not limited to the embodiments described below.

  The inventor is attached to a measurement object in a dark place such as a construction site at night or tunnel construction, and reflects a measurement wave (light wave, laser, etc.) from a measurement device such as a total station at the time of measurement. In view of the fact that it will be difficult to find a measurement target having a crossed letter to match the side collimation (reticle), various examinations, researches, and experiments have been conducted. As a result, the cost is low. However, the present inventors have succeeded in realizing a measurement target that can be reliably detected even in a dark place and can sufficiently function as a measurement target.

That is, the present inventor uses a commercially available reflective sheet as a measurement target, and the measurement target itself emits light so that the measurement target can be easily found even in a dark place. When aligning with the side collimation (reticle), it is possible to accurately recognize the alignment mark (such as a cross or circle) on the measurement target, so that alignment is performed easily and accurately. Thus, a measurement target that enables accurate and reliable measurement was obtained.
Hereinafter, a specific configuration example will be described.

  A measurement target 100 according to Example 1, which is an aspect of the embodiment of the present invention, is a commercially available reflection sheet as shown in FIGS. A reflection sheet 101 (for example, a <diamond grade> reflection sheet (tape) (prism-type reflection sheet (tape)) manufactured by Sumitomo 3M Limited) used for a surveying target or the like is used.

  The measurement target 100 according to the present embodiment uses an EL light-emitting panel (organic light-emitting panel) 110 having a size slightly larger than the reflective sheet 101 (for example, 50 mm square) as a light emitter. However, the present invention is not limited to the EL light-emitting panel, and other flat light-emitting bodies (for example, a plurality of LEDs arranged in a plane) can be used.

  In the present embodiment, the reflective sheet 101 is attached to the light emitting surface 110 </ b> A that emits light from the EL light emitting panel 110.

  Further, as shown in FIG. 2, for example, a magnet sheet 120 of about 1 to 2 mm is attached to the back surface 110B opposite to the light emitting surface 110A of the EL light emitting panel 110, and the object to be measured is iron or the like. If it is a magnetic material, it can be pasted in any position and orientation as many times as necessary, and can be easily removed as many times as it is no longer needed (simple and repeated for the measurement object) And is detachable).

  Note that a power source 130 for supplying power to the light emitting source of the EL light emitting panel 110 is connected to the EL light emitting panel 110, and the power source 130 can be a battery (disposable or rechargeable). And, for example, a configuration in which a storage battery is charged by generating electricity with a solar battery when it is bright can be used. However, other power sources (AC service power source, generator, etc.) are also possible.

  The connection (disconnection and disconnection) between the power supply 130 and the EL light emitting panel 110 (light emitting body) may be configured such that a switch (lever type, push button type, etc.) incorporated in the circuit is turned on / off manually. However, it can also be turned on and off by remote control using a remote control such as infrared rays. In addition, for example, a timer or the like can be used to automatically turn off after a predetermined period after switching on, or automatically turn on after a predetermined time after startup and further turn off after a predetermined time. .

  Here, when the EL light emitting panel 110 is caused to emit light, the EL light emitting panel 110 is slightly larger than the reflective sheet 101, and therefore light is emitted from the portion not covered by the reflective sheet 101 to the outside. Even so, the operator can easily find the measurement target 100.

  The surface 101A of the reflective sheet 101 is provided with alignment marks (cross-shaped and circles) 102 that are useful for alignment with the collimation (reticle) on the measuring apparatus side. A portion slightly apart from the crossed portion of 102 cross characters is formed by cutting the reflective sheet 101 into an elongated shape.

  That is, as shown in FIG. 1, there is no cutout at a portion of about 5 mm to 10 mm in diameter from the center of the alignment mark 102, and an elongated cutout portion 102A is provided in a partial region on the extension line of the cross. Yes. The cutout portion 102A may be formed intermittently at a predetermined interval.

  By the way, the cutout portion 102A is not limited to being formed by cutting out, and can be formed by punching or the like in mass production. That is, the cutout portion 102A may be an opening.

  When such a cutout portion 102A is provided, light is leaked from the cutout portion 102A formed by cutting out the reflective sheet 101 in the alignment mark 102 when the EL light emitting panel 110 emits light. While it becomes easy to find the target 100, the elongated light leaking from the elongated cut portion 102 </ b> A forms an extension line of a cross, so that the operator can measure the device even in a dark place. The alignment mark 102 can be well recognized when aligning the side collimation (reticle) and the alignment mark (cross-shaped or circular shape) 102, so that alignment is performed easily and accurately. As a result, accurate and reliable measurement can be performed.

  That is, according to the present embodiment, by causing the EL light emitting panel 110 to emit light, the operator can easily find the measurement target 100 even in a dark place, and the collimation (reticle) on the measurement apparatus side can be obtained. In addition, the alignment mark (cross-shaped or circular shape) 102 can be easily and accurately aligned, so that accurate and reliable measurement can be performed.

  In addition, according to the present embodiment, since the measurement target 100 is configured using the reflective sheet 101 and the EL light-emitting panel 110 that are easily available and inexpensive, the cost can be reduced. The measurement target 100 can be easily prepared without shortage, and for example, the necessity of frequently attaching and detaching the measurement target 100 during the measurement operation is reduced, and thus the measurement operation is interrupted. As a result, work efficiency can be maintained at a high level.

  Furthermore, according to the present embodiment in which the measurement target 100 is configured using the reflection sheet 101 and the EL light emitting panel 110, the measurement target 100 can be formed thin in the thickness direction, and thus the offset amount between the measurement target and the measurement target. Therefore, it is possible to simplify the measurement work and suppress a decrease in measurement accuracy as compared with a prism and an adapter.

  According to the present embodiment, the thickness of the measurement target 100 can be about 2 mm or less, but as an example, the thickness is 1 including the magnet sheet 120 of about 1 to 2 mm. It can be accommodated in about 5 mm.

  Further, in this embodiment, the magnet sheet 120 can be easily and repeatedly attached to and detached from the measurement object, so that the attachment and removal operations can be simplified and reused. Therefore, the cost can be reduced.

  By the way, in the present embodiment, the cutout portion 102A is not provided in the range of about 5 mm to 10 mm in diameter from the center of the alignment mark 102. However, in this way, the area of the range remaining without being cut out is obtained. Because it can be almost equal to or larger than the area that the light wave (or laser, etc.) from the measuring device such as the total station hits, accurate reflection can be guaranteed at the time of measurement, and it is accurate and reliable. Can contribute to high measurement.

  The measurement target 200 according to the second embodiment of the present invention uses the reflection sheet 101 as in the first embodiment. In addition, the same code | symbol is attached | subjected to the element similar to having demonstrated in Example 1, and detailed description here is abbreviate | omitted.

  As in the first embodiment, the reflective sheet 101 according to the present embodiment is provided with the alignment mark 102 on the surface 101A, and a portion slightly apart from the crossed portion of the cross (the diameter of the alignment mark 102 is about 5 mm from the center). An elongated cut-out portion 102A is provided on an extension line of a crossed letter (a portion separated by about 10 mm).

  In this embodiment, as shown in FIGS. 3 and 4, the reflective sheet 101 is affixed to the surface 210 </ b> A of a styrofoam panel (for example, white) 210 that can be processed relatively easily by hand with a cutter or the like.

  The polystyrene foam panel 210 corresponds to the panel according to the present invention. The expanded polystyrene panel 210 can be formed in advance by molding or the like, or can be formed not only from expanded polystyrene but also from other resins or metals.

  Further, as shown in FIG. 4, for example, a magnet sheet 120 of about 1 to 2 mm is attached to the back surface 210B of the polystyrene panel 210, and can be easily and repeatedly attached to and detached from the measurement target. It is configured.

  In the second embodiment, an LED (Laser Emitting Diode) 220 is used as a light emitter. However, other light emitters, light bulbs, and the like can be used. The power supply 130 can be the same as that of the first embodiment.

  As shown in FIG. 3, the two LEDs 220 are attached so as to be embedded in the vicinity of the edge of the reflection sheet 101 of the concave portion 211 formed in a cross-shaped shape in the styrene panel 210. The cross-shaped recess 211 is provided along the cross of the alignment mark 102 of the reflective sheet 101 so as to substantially correspond thereto.

  As a result, when each LED 220 is caused to emit light, light is emitted from the exposed portion 220A not covered by the reflection sheet 101 to the outside, so that an operator can easily find the measurement target 200 even in a dark place. Will be able to.

  Moreover, the light emitted from the front-end | tip part (part covered with the reflective sheet 101) of two LED220 advances the inside of the recessed part 211, respectively, and cross | intersects at an angle of about 90 degrees. In addition, since the opening part (upper side) of the recessed part 211 is covered with the reflective sheet 101, the light emitted from the front-end | tip part of LED220 is easy to advance in the extension direction of the recessed part 211. FIG.

  Here, also in the present embodiment, since the elongated cutout portion 102A is provided in the reflection sheet 101, the light leaks from the cutout portion 102A when the LED 220 emits light. However, since the elongated light leaking out from the elongated cut portion 102A will form an extended line of crosses, the operator can perform the measurement on the measuring device side even in a dark place. Since the alignment mark 102 can be well recognized when aligning the collimation (reticle) and the alignment mark (cross-shaped or circular shape) 102, alignment can be performed easily and accurately. As a result, accurate and reliable measurement can be performed.

  It should be noted that the amount of light reflected from the cutout portion 102A can be increased by providing a reflecting plate or the like that reflects light on the bottom surface or side surface of the recess 211, so that the amount of light leaking from the cutout portion 102A can be increased. it can.

  That is, according to the present embodiment, the LED 220 emits light, so that an operator can easily find the measurement target 200 even in a dark place, and the collimation (reticle) on the measurement apparatus side and the alignment are adjusted. It is possible to easily and accurately perform alignment with the mark 102 (cross-shaped or circular shape) 102, so that accurate and highly reliable measurement can be performed.

  Further, according to the present embodiment, the measurement target 200 is configured using the reflective sheet 101 and the LED 220 embedded in the styrene panel 210, which are easily available and inexpensive, so that the cost can be reduced. Therefore, it is possible to easily prepare a necessary amount of the measurement target 200 without a shortage. For example, it is possible to reduce the necessity of frequently attaching and detaching the measurement target 200 during the measurement operation. The opportunity to be interrupted is suppressed, and as a result, work efficiency can be maintained at a high level.

  Further, in the present embodiment, it can be formed thin in the thickness direction, and can be easily attached to and detached from the measurement object by the magnet sheet 120 of about 1 to 2 mm. The effect of this can be achieved.

  Although the thickness of the measurement target 200 can be about 10 mm or less, according to the present embodiment, the thickness including the magnet sheet 120 is about 8 mm, depending on the size of the LED 220 and the like. Can fit in.

  By the way, the cross-sectional shape of the recess 211 is not limited to a rectangle, and may be a V-shaped groove, a semicircular groove, or the like.

  The measurement target 300 according to the third embodiment of the present invention is a commercially available reflection sheet, similar to the first and second embodiments, and is used for road signs, surveying targets, etc., although it is general-purpose. A reflective sheet 301 (for example, <diamond grade> reflective sheet (tape) (prism-type reflective sheet (tape)) manufactured by Sumitomo 3M Limited) is used.

  However, the reflective sheet 301 according to the present embodiment is provided with an alignment mark (cross-shaped or circular shape) 302 on the surface 301A, but the elongated cutout portion 102A as in the first and second embodiments does not have to be provided. .

  In this embodiment, as shown in FIGS. 5 and 6, the reflective sheet 301 is attached to the back surface 310 </ b> B of the acrylic plate 310 that can be processed relatively easily by hand with a cutter or the like.

  The acrylic plate 310 corresponds to the transparent member according to the present invention. The acrylic plate 310 can be formed in advance by molding or the like, or can be formed not only of acrylic but also of glass or the like.

  In addition, the aluminum tape 320 is attached to the back surface 310B of the acrylic plate 310 from the back surface 301B side of the reflective sheet 301 so that the reflective sheet 301 is sandwiched between the back surface 310B of the transparent acrylic plate 310. It has become. In addition, although the aluminum tape 320 was employ | adopted from a viewpoint of cost or availability, it can be set as the reflective element which reflects light predetermined | prescribed, such as not only this but a thin aluminum plate and a stainless steel plate.

  Also in this embodiment, as shown in FIG. 6, for example, a magnet sheet 120 of about 1 to 2 mm or the like is attached to the lower side of the aluminum tape 320, so that the measurement object can be easily and repeatedly performed. It is configured to be detachable.

  In this embodiment, an LED (Laser Emitting Diode) 350 is used as a light emitter. However, other light emitters, light bulbs, and the like can be used. As the power source 130, the same one as in the first and second embodiments can be used.

  Here, as shown in FIGS. 5 and 6, in this embodiment, a rectangular central opening 311 is provided at a substantially central portion of the rectangular acrylic plate 310 and each end of the central opening 311 is provided. An inclined surface 312 is provided toward the outer peripheral side from the side. A flat outer peripheral portion 315 exists on the surface 310 A of the acrylic plate 310 on the outer peripheral side of the inclined surface 312.

  The inclined surface 312 is connected to each side of the central opening 311 and has a shape in which the four inclined surfaces 312 are connected by the connecting portion 313, but adjacent inclined surfaces so that the connecting portion 313 is not clear. It is also possible to process so that 312 may be connected smoothly. Further, the central opening 311 is not limited to a rectangle but may be a circle or the like.

  The central opening 311 can be covered with a transparent member or the like as long as the measurement accuracy is not adversely affected.

  In addition, the inclination angle of the inclined surface 312 with respect to the back surface 310B of the acrylic plate 310 is about 30 degrees.

  In the present embodiment, the LEDs 350 are embedded in the four concave portions 314 formed on the back surfaces of the inclined surface 312 and the flat outer peripheral portion 315 so as to straddle the inclined surface 312 and the flat outer peripheral portion 315, respectively.

  Of these four LEDs 350, two LEDs 350 are arranged so as to face each other on the extension line of the cross mark of the alignment mark 302 as shown in FIG.

  According to such a configuration, when each LED 350 is caused to emit light, the direct light from the LED 350 and the light reflected by the aluminum tape 320 are the flat outer peripheral portion 315, the inclined surface 312 and the outer peripheral side surface of the acrylic plate 310. Therefore, the operator can easily find the measurement target 300 even in a dark place.

  Further, a part of the light emitted from each LED 350 can pass through the inclined surface 312 and illuminate the alignment mark 302 facing the central opening 311 well.

  For this reason, even in a dark place, the operator can align the alignment mark 302 when aligning the collimation (reticle) on the measurement apparatus side with the alignment mark (cross-shaped or circular) 302. Can be recognized well, so that alignment can be performed easily and accurately, and thus accurate and highly reliable measurement can be performed.

  In addition, as shown in FIG. 5, when the tip of each LED 350 is disposed so as to face inward, the reflection sheet 301 can be effectively illuminated by the light emitted from the LED 350, and light emission to the outside and reflection Irradiation to the sheet 3101 can be made compatible. However, the present invention is not limited to this, and the direction of the LED 350 can be appropriately changed according to various requirements.

  As described above, according to the present embodiment, the LED 350 emits light so that the operator can easily find the measurement target 300 even in a dark place, and the operator can collimate on the measurement device side ( Since the alignment mark 302 can be recognized well when aligning the alignment mark (reticle) and alignment mark (cross-shaped or circular shape) 302, the alignment can be performed easily and accurately. Can perform highly reliable measurements.

  In addition, according to the present embodiment, since the measurement target 300 is configured using the reflective sheet 301, the acrylic plate 310, and the LED 350, which are easily available and inexpensive, the cost can be reduced. Therefore, the necessary amount of measurement target 300 can be easily prepared without shortage, for example, the necessity of frequently attaching / detaching the measurement target 300 during the measurement operation is reduced, and the measurement operation is interrupted. Opportunities are reduced, and as a result, work efficiency can be maintained at a high level.

  Further, in the present embodiment, it can be formed thin in the thickness direction, and can be easily attached to and detached from the measurement object by the magnet sheet 120 of about 1 to 2 mm. The effect of this can be achieved.

  Although the thickness of the measurement target 100 can be about 10 mm or less, according to this embodiment, the thickness including the magnet sheet 120 is about 10 mm, depending on the size of the LED 350 and the like. Can fit in.

In the present embodiment, the inclination angle of the inclined surface 312 with respect to the back surface 310B of the acrylic plate 310 has been described as about 30 degrees. However, when the angle is set, the light transmitted through the acrylic plate 310 to the outside and the reflection sheet 301 are reflected. The light to be illuminated can be distributed in a well-balanced manner, and the measurement target 300 can be visually recognized even from a wide range of diagonal positions, and it is easy to find in a dark place and from a wider range of positions in the diagonal direction. Ease of visual recognition and easy and accurate positioning can be achieved with a good balance.
However, the inclination angle is not limited to about 30 degrees, and may be another angle.

  By the way, in each Example mentioned above, a magnet sheet etc. can be stuck on the back surface side of the power supply 130, and this can be easily attached or detached in the vicinity of the site | part to which the measurement targets 100-300 are attached. It is possible to attach to.

  In addition, when the target to which the measurement targets 100 to 300 and the power supply 130 are attached is not magnetized, these can be attached using an adhesive or a double-sided tape instead of the magnet sheet, Convenient.

  Moreover, in each Example mentioned above, although what connected the power supply 130, the switch, etc. to the measuring targets 100-300 via the electric wire (cable) extended outside was illustrated, it is not limited to this. In addition to omitting the electric wire extending to the outside, the power supply, the switch, etc. are miniaturized (for example, using a button battery), and these are integrally mounted on the measurement target 100-300 main body. Is also possible.

  The measurement targets 100 to 300 of the above-described embodiments can be formed with a size of, for example, about 50 mm × 50 mm × 10 mm (length × width × thickness), for example, (1) assembly of a steel frame or the like at a construction site at night Measurement of the position and inclination of steel frames, etc. during work (construction), (2) Measurement of displacement of bridge piers, etc. on highways (for example, roads with heavy traffic, rivers that are not easy to cross over, etc.) In this case, it is effective when it is necessary to measure the position and displacement of the bridge pier from the opposite side with these in between, etc.) and (3) Construction inside the tunnel where sufficient lighting cannot be secured This is useful because it can be used for measuring the position and displacement in measurements during work and periodic inspections after construction.

  The embodiments according to the present invention described above are merely examples for explaining the present invention, and various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 100 Measurement target 101 Reflective sheet 101A Reflective surface 102 Position alignment mark 102A Cutout part 110 EL light emission panel (light emitting body)
120 Magnet sheet 130 Power supply device 200 Measurement target 210 Styrofoam panel 211 Recessed portion 220 LED (light emitting diode)
220A Bare part 300 Measurement target 301 Reflective sheet 310 Acrylic plate (transparent member)
311 Central opening 312 Inclined surface 314 Recess 320 Aluminum tape 350 LED (light emitting diode)

Claims (9)

A plate-like measurement target that is attached to a measurement object and includes a reflection sheet that reflects measurement waves emitted from a measurement device,
A light-emitting body that emits light when supplied with power is attached integrally with the measurement target,
While light is emitted from the measurement target to the outside by light emission of the light emitter, the alignment mark with the collimation on the measurement device side provided on the reflection surface of the reflection sheet is illuminated ,
The light emitter is constituted by an LED,
The LED is disposed in the vicinity of the edge of the reflective sheet in the recess provided in the panel to which the reflective sheet is attached,
The light emitted from the LED emits light to the outside, and the alignment mark is illuminated.
A measurement target, wherein a part of the reflection sheet is opened corresponding to the recess, and light is leaked from the opening to the outside . The LEDs are respectively provided in substantially central portions of adjacent sides of the reflective sheet, and the corresponding recesses extend in a direction substantially perpendicular to the side on which the LEDs are provided, and intersect at the lower side of the reflective sheet. The measurement target according to claim 1 . The measurement target according to claim 1, wherein the opening is formed so as to constitute a part of the alignment mark . The measurement target according to any one of claims 1 to 3 , wherein the opening is not opened in a predetermined region in a central portion of the alignment mark . A plate-like measurement target that is attached to a measurement object and includes a reflection sheet that reflects measurement waves emitted from a measurement device,
A light-emitting body that emits light when supplied with power is attached integrally with the measurement target,
While light is emitted from the measurement target to the outside by light emission of the light emitter, the alignment mark with the collimation on the measurement device side provided on the reflection surface of the reflection sheet is illuminated ,
The light emitter is constituted by an LED,
The LED is disposed in a recess provided on the back surface of a transparent member attached to the reflective surface side of the reflective sheet,
The measurement target , wherein the LED emits light to the outside and the alignment mark is illuminated . The measurement target according to claim 5 , wherein an area corresponding to a predetermined area of a central portion of the alignment mark of the transparent member is opened . The measurement target according to claim 6 , wherein a surface extending outward from the opening is inclined at a predetermined angle . Two pairs of LEDs arranged to face each other were provided, and these two sets of LEDs were arranged so as to intersect at approximately 90 degrees so as to correspond to the cross-shaped portion of the alignment mark. The measurement target according to any one of claims 5 to 7 , wherein: The measurement target according to any one of claims 1 to 8 , wherein the measurement target is detachably attached to a measurement target via a magnet that is substantially integral with the measurement target.