JP2008157632A - Fathometer on road, or the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To discriminate from positions other than directly above, or from remote position. <P>SOLUTION: The body 3 of a fathometer, constituted of a base 10, provided with the legs 2 equipped with a plurality of electrode rods 4, having different lower end heights H determined from a virtual road surface X where the bottom of the legs 2 abutting location; one or more conductive rods 5 existing lower than the lower ends of the electrode rod 4 that conduct by means of water W on a road surface GL; pilot lamps 6 connected to respective electrode rods 4; and the control means 7 for lighting only the pilot lamp 6 connected to the conductive electrode rod 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a water depth measuring device that conveniently measures the depth of water deposited on a road upper surface or the like.

  As such a water depth measuring device a, for example, as shown in FIG. 4, a plurality of transparent measuring axes b made of a synthetic resin such as an acrylic resin is set to a height from the reference plane X at the lower end (lower end height). ) It is known that h is attached at different intervals in order. In this depth measuring device a, when the measurement axis b is viewed from the upper end side, it is used that the lower end of the measurement axis b looks different depending on whether it is wet with water W on the road surface or not. The lower end height h of the measurement axis b whose appearance changes can be measured as the water depth.

JP 7-174504 A

  However, the water depth measuring device a having such a structure is difficult to distinguish from a position other than directly above or from a distant position because the difference in appearance cannot be identified unless the measurement axis b is viewed from the upper end side. There is a problem that an unreasonable measurement posture is forced. Moreover, once the lower end gets wet, even if the water level drops and the water surface is separated from the lower end of the measurement axis b, the appearance is not restored. Therefore, once the lower end gets wet due to waves or vibration during measurement, there is a problem that even if the lower end is taken later, the appearance does not change and the measurement cannot be performed accurately.

  Therefore, the present invention provides a water depth measuring instrument on the road that can be easily measured from a position other than directly above or at a remote position, and can be measured accurately and repeatedly even if it is once wetted by a wave or the like. The purpose is to do.

In order to achieve the above-mentioned object, the invention of claim 1 of the present application is a water depth measuring device for measuring the depth of water accumulated on the road upper surface or the like,
A main body having a base and a leg extending downward from the base; and the leg is in contact with the upper surface of the road at the bottom surface contact position of the leg, and holds the base.
A plurality of electrode shafts having different lower end heights H from the upper surface of the virtual road formed by an imaginary plane determined by the bottom surface contact position of the leg portion on the main body portion, and extending below the lower end of the electrode shaft And one or more conductive shafts that are electrically connected to the electrode shaft by the water, a pilot lamp that is connected to each electrode shaft, and a control means that emits light only from the pilot lamp that is connected to the conductive electrode shaft. And
The water depth is measured by a lower end height H of an electrode shaft to which the light emitting pilot lamp is connected.

  Further, in the invention of claim 2, the electrode shaft has a conducting portion at least at the lower end portion, and is arranged with an interval that does not hold water droplets from the leg portion, the conducting shaft, and the other electrode shaft. It is said.

  According to a third aspect of the present invention, the conductive shaft is a ground wire provided on the leg portion.

  The invention according to claim 4 is characterized in that the control means is integrally incorporated in the main body together with the battery.

  Since the present invention is configured as described above, the presence or absence of water conduction between a plurality of electrode shafts with different bottom end heights and, for example, a conductive shaft extending to the road surface is detected, and the conductive electrode shaft Only the pilot lamp to be connected is turned on. Therefore, it is possible to easily identify whether or not the pilot lamp emits light from a position other than directly above or from a position away from the position, and measurement can be easily performed. In addition, since electrical continuity is used, accurate and repeated measurement can be performed even if it is once wetted by a wave or the like.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view conceptually showing a water depth measuring device on the road or the like of the present invention, and FIG. 2 is a circuit diagram showing an example of the control means.

  In FIG. 1, the water depth measuring instrument 1 of the present embodiment includes a main body 3 that has a leg 2 and is installed on a road surface GL, and a plurality of electrode shafts 4 are provided on the main body 3. There are provided one or more conductive shafts 5, pilot lamps 6 connected to the electrode shafts 4, and control means 7 for emitting only the pilot lamps 6 connected to the conductive electrode shafts 4.

  The main body portion 3 includes a base body 10 and a plurality of leg portions 2 extending downward from the base body 10. The main body portion 3 has a bottom surface contact position 2S of the leg portion 2 that is in contact with the road surface GL. By contacting, it is installed on the road surface GL. The “bottom surface contact position 2S” means the position of the lowest point on the bottom surface of the leg 2.

  Next, at least a lower end portion of the electrode shaft 4 is an electrically conductive portion, and an upper end portion thereof is fixed to the base body 10. At this time, the electrode shafts 4 have different lower end heights H, which are heights from the virtual road upper surface X formed by a virtual plane determined by the bottom surface contact position 2S. It is preferable that the lower end height H is sequentially different at an equal interval G. In this example, the lower end height H is sequentially changed at an interval G of 0.2 mm, that is, the lower end height H is 0.2 mm, 0 mm. For example, 24 electrode shafts 4 are attached as 4 mm, 0.6 mm,.

  The interval G of the lower end height H is set according to the required measurement accuracy and is not particularly restricted. However, when used in a tire wet running test, the interval G is 0.1 to 0.5 mm, particularly 0. A range of 1 to 0.2 mm is preferable. The number of electrode shafts 4 is also set according to the assumed maximum depth of water in view of the gap G. The electrode shaft 4 is preferably formed of a corrosion-resistant metal such as gold or stainless steel in order to suppress a decrease in measurement accuracy due to corrosion. For the same purpose, it is also preferable to cover and protect the other part with a protective layer while leaving the lower end part which is a conducting part.

  Next, the conductive shaft 5 extends below the lower end of the electrode shaft 4A having the smallest lower end height H among the electrode shafts 4, and the conductive shaft 5 is formed by water W on the road surface GL. And the electrode shaft 4 can be electrically connected. In the present example, a case where the conductive shaft 5 is formed as a ground wire 11 provided on the leg portion 2 is illustrated. Specifically, the conductive shaft 5 is a contact portion that is exposed at the bottom surface contact position 2S and contacts the road surface GL at the lower end of the main portion 5A extending downward along the inside of the leg portion 2 or along the side surface thereof. Provide 5B. The contact portion 5B is formed of a corrosion-resistant metal such as gold or stainless steel, like the electrode shaft 4. It is sufficient to form one conductive shaft 5, but it is also preferable to form another conductive shaft 5 on different leg portions 2 in consideration of disconnection or poor contact.

  Next, the pilot lamp 6 is connected to each of the electrode shafts 4 and, in this example, is attached to the display unit 12 provided on the upper surface of the base 10 with the light emitting unit facing upward. As the pilot lamp 6, an LED lamp having a low voltage and a low current can be suitably employed. Further, as shown in FIG. 2, the display unit 12 has a scale 12A indicating the lower end height H, for example, in a matrix shape, and the pilot lamp 6 is attached to each scale position. In this case, for example, when the water depth is 0.6 mm or more and less than 0.8 mm, the three pilot lamps 6 having the scale of 0.6 mm or less emit light. However, the pilot lamp 6 may be arranged without providing a scale display. In such a case, the water depth can be calculated from the interval G and the number of pilot lamps 6 that emit light.

  Next, it is preferable that the control means 7 is integrated into the main body 3 together with the battery 30 from the viewpoints of portability and handling. FIG. 3 shows an example of the control means 7. In this example, the case where each pilot lamp 6 is made to emit light using the switching circuit of a transistor is illustrated. Specifically, in the control means 7 of this example, a plurality of main circuit units 34 each including a transistor 32, a resistor 33, and a pilot lamp 6 are connected in parallel to a power source (battery) 30 via a main switch 31. Each pilot lamp 6 emits light by the main current from the power source 30 flowing through the main circuit unit 34. Each transistor 32 is connected to a base circuit unit 35 for turning on / off the transistor 32. In the base circuit portion 35, the electrode shaft 4 is connected to the transistor 32 through, for example, a resistor 36, and the conductive shaft 5 is connected to the downstream side of the mainstream circuit portion 34. When the electrode shaft 4 and the conductive shaft 5 are conducted by water and a weak base current flows through the base circuit portion 35, the transistor 32 can be turned on to allow the main current to flow, and the pilot lamp 6 emits light. Yes.

  The control means 7 is not limited to this example, and various circuits can be selected as appropriate.

  Here, it is preferable that the electrode shaft 4 is arranged at a distance D that does not hold water droplets from the leg portion 2, the conductive shaft 5, and another adjacent electrode shaft 4. This is because when the water droplet is held, the electrode shaft 4 in contact with the water droplet may be energized to cause a malfunction even when the electrode shaft 4 does not contact the water W on the road surface GL. Therefore, it is preferable that the distance D is at least 3 mm. It is also preferable to coat the periphery of each electrode shaft 4 with a water-repellent resin material such as a fluororesin, leaving the lower end portion so that water droplets are not retained.

  Thus, since the water depth measuring instrument 1 of the present invention emits the pilot lamp 6 by utilizing the electrical conduction by the water on the road surface GL, even from a position other than directly above or a distant position, The presence or absence of light emission from the pilot lamp can be easily identified, and the measurement work can be easily performed. Further, even when the electrode shaft 4 is once wetted by waves or vibrations during measurement, the water depth can be measured accurately without malfunction. Further, even on a road surface where the water level changes with time, the water depth at each time point can be measured following this change.

  As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

It is a side view which shows notionally the water depth measuring device of this invention. It is a top view which shows an example of a display part with a pilot lamp. It is a circuit diagram which shows an example of a control means. It is a side view which shows the conventional water depth measuring device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water depth measuring device 2 Leg part 2S Bottom surface contact position 3 Main-body part 4 Electrode shaft 5 Conductive shaft 6 Pilot lamp 7 Control means 10 Base | substrate 11 Ground wire 30 Battery GL Road upper surface S Virtual road upper surface W Water

Claims (4)

A water depth measuring device for measuring the depth of water accumulated on the road upper surface, etc.
A main body having a base and a leg extending downward from the base; and the leg is in contact with the upper surface of the road at the bottom surface contact position of the leg, and holds the base.
A plurality of electrode shafts having different lower end heights H from the upper surface of the virtual road formed by an imaginary plane determined by the bottom surface contact position of the leg portion on the main body portion, and extending below the lower end of the electrode shaft And one or more conductive shafts that are electrically connected to the electrode shaft by the water, a pilot lamp that is connected to each electrode shaft, and a control means that emits light only from the pilot lamp that is connected to the conductive electrode shaft. And
A water depth measuring device on a road or the like, wherein the water depth is measured by a lower end height H of an electrode shaft to which the pilot lamp that emits light is connected.   2. The road according to claim 1, wherein the electrode shaft has at least a lower end portion as a conducting portion, and is spaced apart from the leg portion, the conducting shaft, and another electrode shaft without holding water droplets. Etc. Water depth measuring instrument.   3. The water depth measuring device according to claim 1, wherein the conductive shaft is a ground wire provided on the leg portion.   The said control means is integrally incorporated in the said main-body part with the battery, The water depth measuring device on the road etc. in any one of Claims 1-3 characterized by the above-mentioned.

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