JP2006029803A - Water depth measuring apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water depth measuring apparatus continuously measuring the water depth of a road surface. <P>SOLUTION: In the water depth measuring apparatus, water depth is measured by measuring bodies which changes their light transmittance and changes their color when measuring surfaces are in contact with water. The water depth measuring apparatus comprises a pair of reference disks 1 and 2 having outer circumferential surfaces 1a and 2a as reference surfaces and a plurality of the disk-like measuring bodies 3-5 having outer circumferential surfaces 3a-5a as the measuring surfaces and gradually different diameters. The disk-like measuring bodies 3-5 are coaxially fixed to the reference disks 1 and 2 and rotatable with the rotation of the reference disks 1 and 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a water depth measurement device that measures the water depth of a road surface, and more particularly to a water depth measurement device that can continuously measure the water depth of a road surface.

  Conventionally, as a device for measuring the water film thickness (water depth) on the road surface, when the measuring surface of the measuring body comes into contact with water, the water depth is measured by changing the light transmittance and changing the color. A water depth measurement device has been proposed (see, for example, Patent Document 1). By forming a rough bottom end surface on the measurement surface for measuring the water depth, and examining the presence or absence of a color change of a plurality of transparent measurement bodies in which the height of the measurement surface is changed stepwise, the water depth can be measured. I am doing so.

However, the water depth measuring device described above can only measure at a pinpoint, and the road surface has irregularities and slopes that affect the measurement accuracy. Therefore, to obtain an accurate water depth on the road surface, the position is measured many times at the measurement point. It is necessary to change and measure the water depth. The measurement operation is a complicated operation in which the measurement is repeated by wiping off the water that has entered the rough surface of the measurement surface every time the measurement is performed.
JP 7-174504 A

  The objective of this invention is providing the water depth measuring apparatus which can measure the water depth of a road surface continuously.

  The water depth measuring device of the present invention that achieves the above object is a water depth measuring device that measures the water depth with a measuring body that changes its light transmittance and changes its color when the measuring surface comes into contact with water. A pair of reference disks and a plurality of disk-shaped measuring bodies whose outer peripheral surface is a water depth measuring surface and whose diameters are different in stages, and the disk-shaped measuring bodies are fixed coaxially to the reference disk. It is characterized by.

  Another depth measuring apparatus of the present invention is a pair of depth measuring apparatuses that measure the water depth by a measuring body whose color changes when the measuring surface comes into contact with water. And a frustoconical measuring body whose outer peripheral surface is a water depth measuring surface and the diameter continuously changes, and the frustoconical measuring body is fixed coaxially to the reference disc. And

  According to the water depth measuring apparatus of the present invention described above, a pair of reference disks and a plurality of disk-shaped measuring bodies whose diameters are different in stages, or a truncated cone-shaped measuring body whose diameters are continuously changed are arranged coaxially. Therefore, it is possible to continuously measure the water depth of the road surface while rotating the water depth measuring device, so that the water depth can be easily measured.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows an embodiment of a water depth measuring device according to the present invention. This water depth measuring device is arranged upright between a pair of standing left and right reference disks 1 and 2 and the reference disks 1 and 2. A plurality of disk-shaped measuring bodies 3, 4, and 5 are provided.

  The reference disks 1 and 2 are composed of disks having the same diameter, and the outer peripheral surfaces 1a and 2a are measurement reference surfaces (0).

  The disk-shaped measuring bodies 3, 4, 5 are composed of a transparent body whose diameter is smaller than that of the reference disks 1, 2, and whose diameters are gradually reduced, and are roughened outer peripheral surfaces 3 a, 4 a, 5 a. Is the depth measurement surface.

  In the figure, three disk-shaped measuring bodies 3, 4 and 5 are shown as an example, but usually, a dozen or so discs having different diameters from the reference plane of the reference discs 1 and 2 to about a dozen or so in 1 mm increments. A measurement object is attached, and a measurement value is determined for each measurement surface of each disk-like measurement object.

  As a material used for the transparent body constituting the disk-shaped measuring bodies 3, 4, and 5, any material may be used as long as it is a transparent material. For example, a resin material such as an acrylic resin can be preferably used. .

  The disk-shaped measuring bodies 3, 4, 5 are fixed coaxially to the reference disks 1, 2 in a state where the adjacent measuring members are bonded to each other, and when the reference disks 1, 2 are rotated on the road surface 6, Along with this, it is possible to rotate. When the outer circumferential surfaces (measurement surfaces) 3a, 4a, 5a) of the disk-shaped measuring bodies 3, 4, 5 are in contact with water, the light transmittance changes, and the transparent disk-shaped measuring body viewed from above. 3, 4, and 5 appear to be dark, and the color changes dark due to the change in light transmittance, so that the water depth can be measured.

  In the example shown in FIG. 1, since the measurement surfaces of the disk-shaped measuring bodies 3 and 4 are in contact with the water film 7 on the road surface 6, the disk-shaped measuring bodies 3 and 4 viewed from above appear dark and have a small diameter. The measurement surface of the disk-shaped measurement body 4 becomes a measurement value.

  According to the present invention described above, the pair of reference disks 1 and 2 and the plurality of disk-shaped measuring bodies 3, 4 and 5 having different diameters are arranged coaxially, so that as shown in FIG. The water depth h of the road surface 6 can be continuously measured while rotating the water depth measuring device (one rotation). Therefore, the water depth measurement operation can be facilitated.

  FIG. 3 shows another embodiment of the water depth measuring apparatus of the present invention. This water depth measuring apparatus is a disk-shaped measuring body 3 via a shaft member X between the reference disks 1 and 2 in the embodiment of FIG. , 4 and 5 are fixed at a predetermined interval a. Thus, by providing the space | interval a, it can prevent that the malfunction which water contacts the measurement surface of the adjacent disk shaped measuring body by the surface tension of water generate | occur | produces.

  FIG. 4 shows still another embodiment of the water depth measuring device of the present invention. This water depth measuring device further blocks water ripples between the disc-shaped measuring bodies 3, 4 and 5 in the embodiment of FIG. A partition disk 8 is arranged. The diameter of the partition disk 8 is the same as or smaller than that of the reference disks 1 and 2 and is larger than the diameter of the adjacent disk-shaped measuring body.

  By providing the partition disk 8 in this manner, it is possible to prevent the influence of the waves generated by the disk-shaped measuring body in contact with water from coming into contact with the measurement surface of the adjacent disk-shaped measuring body during continuous measurement. it can.

  FIG. 5 shows still another embodiment of the water depth measuring device of the present invention. This water depth measuring device is arranged along the outer circumferential surfaces 3a, 4a and 5a in the circumferential direction in the disk-shaped measuring bodies 3, 4 and 5. Cutout recesses 9 are formed at predetermined intervals. Instead of the illustrated shape, the notch 9 may be provided so that the outer peripheral surfaces 3a, 4a, 5a of the disk-shaped measuring bodies 3, 4, 5 have a gear-like shape. Thus, by providing the notch recessed part 9, the influence of the surface tension of the water with respect to the circumferential direction of a measurement surface can be excluded.

  FIG. 6 shows still another embodiment of the water depth measuring device of the present invention. The water depth measuring device further includes a color identifying means 10 that can identify the color change of the disk-shaped measuring bodies 3, 4, and 5. The reference disks 1 and 2 are rotatably supported by the frame body 20, and the color identification means 10 is attached to the frame body 20 so as to be positioned above the disk-shaped measurement bodies 3, 4, and 5. As shown in FIG. 7, the color discriminating means 10 includes a photosensor 11 for reading the images of the disk-shaped measuring bodies 3, 4 and 5, and a disk-shaped measuring body whose color is changed from the image signal by contact with water. Are provided with an arithmetic unit 12 that performs an arithmetic operation for determining the output, a recording unit 13 that records the result, and an output unit 14 that performs display and printing.

  By providing the color identification means 10 in this way, the measurement work of the worker can be reduced, and reading errors and reading errors by the worker can be eliminated, thereby improving the measurement accuracy.

  FIG. 6 shows an example in which the color identification means 10 is provided in the water depth measuring device in FIG. 4, but it may be provided in the water depth measuring device in FIGS. You may make it comprise in a measuring apparatus.

  FIG. 8 shows still another embodiment of the water depth measuring device of the present invention. This water depth measuring device is constituted by a frustoconical measuring body 15 whose diameter is continuously changed in place of the disk-shaped measuring bodies 3, 4 and 5 described above, with the outer peripheral surface 15a being a water depth measuring surface. . A frustoconical measurement body 15 made of a transparent body having a rough measurement surface is fixed between the pair of reference disks 1 and 2 via a shaft member X coaxially with the reference disks 1 and 2. The measurement surface is provided with a scale 16 at a predetermined interval, and the depth of water can be measured by reading the scale 16 at the portion where the color has changed.

  Thus, by arranging the truncated cone-shaped measuring body 15 coaxially with the reference disks 1 and 2, the water depth h of the road surface 6 can be continuously measured while rotating the water depth measuring device.

  As shown in FIG. 9, annular slits 17 are provided on the outer peripheral surface 15 a of the truncated cone-shaped measuring body 15 so as to be positioned between the scales 16 at predetermined intervals, and are adjacent to each other by the surface tension of water. It is preferable to prevent the problem that water contacts the 16 measurement surface portions.

  In the present invention, the measurement bodies 3, 4, 5, and 15 are made of a transparent body whose light transmittance easily changes when the measurement surface comes into contact with water. As long as the light transmittance is changed and the color is changed, the transparent body is not particularly limited.

It is a front view which shows one Embodiment of the water depth measuring apparatus of this invention. It is a side view which shows the state continuously measured with a water depth measuring apparatus. It is a front view which shows other embodiment of the water depth measuring apparatus of this invention. It is a front view which shows other embodiment of the water depth measuring apparatus of this invention. It is sectional drawing which shows other embodiment of the water depth measuring apparatus of this invention, and is equivalent to MM arrow sectional drawing of FIG. It is a front view which shows other embodiment of the water depth measuring apparatus of this invention. It is a block diagram of a color identification means. It is a front view which shows other embodiment of the water depth measuring apparatus of this invention. It is a principal part enlarged view of a truncated cone-shaped measuring body.

Explanation of symbols

1, 2 Reference disc 1a, 2a Outer peripheral surface 3, 4, 5 Disc-shaped measuring body
3a, 4a, 5a Outer peripheral surface 6 Road surface 7 Water film 8 Partition disk 9 Notch recess 10 Color identification means 15 Frustum-shaped measuring body 15a Outer peripheral surface 17 Slit a Interval h Water depth

Claims (9)

  In a water depth measurement device that measures water depth with a measuring body whose color changes when the measurement surface comes into contact with light, a pair of reference disks with the outer peripheral surface serving as a reference surface and A water depth measuring device having a plurality of disk-shaped measuring bodies having different diameters on a measurement surface and fixing the disk-shaped measuring body coaxially with respect to a reference disk.   The water depth measuring device according to claim 1, wherein a plurality of disc-shaped measuring bodies are arranged at a predetermined interval.   The water depth measuring device according to claim 2, wherein a partition disk for blocking water ripples is arranged between the respective disk-shaped measuring bodies.   The water depth measuring device according to claim 1, 2 or 3, wherein notched concave portions are provided at predetermined intervals along the circumferential direction on the outer peripheral surface of the disk-shaped measuring body.   In a water depth measurement device that measures water depth with a measuring body whose color changes when the measurement surface comes into contact with light, a pair of reference disks with the outer peripheral surface serving as a reference surface and A water depth measuring device having a truncated cone-shaped measuring body having a diameter continuously changing on a measurement surface, and the truncated cone-shaped measuring body fixed coaxially with respect to a reference disk.   The water depth measuring device according to claim 5, wherein annular slits are provided on the outer peripheral surface of the truncated cone-shaped measuring body at predetermined intervals in the axial direction.   The water depth measuring device according to any one of claims 1 to 6, wherein the measuring body is disposed between a pair of reference disks.   The water depth measuring device according to any one of claims 1 to 7, wherein the measuring body is made of a transparent body having a roughened measuring surface. The water depth measuring device according to any one of claims 1 to 8, further comprising color identifying means capable of identifying a change in color of the measuring body.

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