JPH10153540A - Lane marker wet-meter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable saving of the labor in burying work and curtailing of the burying cost by molding and integrating a magnetic generation body for recognizing lanes, and a wetting body varying in resistance value between electrodes when water adheres to a plurality of electrodes. SOLUTION: The lane marker wet-meter is formed into a disc with the diameter of about several cm, a disc-shaped magnetic generation body 1 is arranged at the center thereof and four ring-shaped electrodes 2 are arranged concentric on the outer circumference thereof at an equal interval. The magnetic generation body 1 and the electrodes 2 are integrally molded by a mold material 3. The magnetic generation body 1 and the electrodes 2 are exposed to form a sensor surface and a water adheres to the electrodes 2, a resistance value between the electrodes 2 changes allowing the detecting of the wet condition of a road surface. The magnetic generation body 1 generates a magnetism of the intensity that allows the detecting thereof by a vehicle running on a road and for the purpose, a magnet or a permanent magnet is used. This integral structure can lower cost as compared with separate production thereby achieving a lowering of cost in the burying work as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The lane marker wetness meter of the present invention is used by being embedded in a road such that a sensor surface is exposed on a road surface (road surface). It can also inform the position of the vehicle and can detect the wet state of the road surface. It is used.

[0002]

2. Description of the Related Art In recent years, an automatic vehicle traveling system has been studied which enables a vehicle to automatically travel while checking a traveling lane (lane) of a road. In this system, a magnetic generator called a lane marker is embedded at a predetermined interval along the lane at the center of the lane of the road, and the magnetic force generated by the magnetic generator guides the vehicle running on the road to automatically run. It is. This magnetic generator has a diameter of more than ten c
A disk-shaped magnetic material having a diameter of about m is molded with a resin to have a diameter of more than ten cm.

At present, a wetness meter is buried near a traveling road such as a highway or a normal highway, and a change in the degree of wetness of the road surface detected by the wetness meter indicates a change in a location relatively close to the wetness meter. Is monitored and measured by a measuring device installed in the system. The result of measurement by the measuring device is transmitted to, for example, a road monitoring center, from which it is broadcast as road surface wetness information. On a road in an urban area, a road heater buried in the road may be energized to prevent freezing. In this case, it is necessary to predict the freezing of the road surface in order to efficiently energize the road surface heater. In this case, it is conceivable that the road surface moisture is measured by the wetness meter, and the data is used to control the energization of the road surface heater to efficiently operate the prevention of freezing.

As shown in FIGS. 4 (a) and 4 (b), the wetness meter has a disk shape, a diameter of about ten and several centimeters, and four ring-shaped rings arranged concentrically at intervals. electrodes _{a 1, a 2, a 3} , a between _4, and epoxy mortar B is filled the electrodes a ₁ to a ₄ is molded,
Furthermore, as shown in FIG. (C), electrodes A ₁ and A ₃ are connected, the electrode A ₂ and A ₄ are connected, respectively lead C are wired. The wet meter sensor surface D of the electrode A ₁ to A ₄ is exposed is embedded in the road so as to be exposed to the road surface, measurement leads C is placed on roadside which are not too far from the wet meter It is connected to the device E by an electric wire F. In this wet meter, when water adheres between the electrodes on the sensor surface D, the electric resistance between the electrodes changes according to the amount of the water, and the electric resistance between the lead wires C changes. The change in the electric resistance value is measured by the measuring device E.

[0005]

Conventionally, since the lane marker and the wetness meter are separate bodies, they can be manufactured separately,
Management, which is cumbersome and costly. In addition, since separate holes must be drilled and buried in roads, construction is cumbersome, not only increasing construction costs, but also increasing traffic restrictions on vehicles and contributing to traffic congestion and traffic accidents. Was.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to enable a lane marker and a wetness meter to be simultaneously buried on a road.
An object of the present invention is to provide a lane marker wetness meter capable of saving labor for burying work and reducing burying cost.

[0007]

SUMMARY OF THE INVENTION A lane marker wetness meter according to the present invention comprises a magnetic generator 1 for generating magnetism for lane recognition which can be detected by a vehicle running on a road, and a plurality of electrodes 2 arranged at predetermined intervals. When moisture on the road surface adheres to the electrode, the resistance value between the electrodes 2 changes, and the electrode 2 of a wet body capable of detecting the wet state of the road surface is molded and integrated with a molding material 3. Further, the magnetic generator 1 and the electrode 2 are arranged in a ring shape so that one of them surrounds the other at an interval,
In this arrangement state, it was molded with the molding material 3 and integrated.

[0008]

FIG. 1 shows a lane marker wetness meter according to a first embodiment of the present invention. This lane marker wetness meter is formed in a disk shape having a diameter of about several tens of cm, a disk-shaped magnetic generator 1 is arranged at the center, and four ring-shaped members are formed concentrically with the magnetic generator 1 on the outer periphery. The electrodes 2 are arranged at equal intervals, and the magnetic generator 1 and the electrodes 2 are integrated by being molded with a molding material 3. The lane marker wet meter has a sensor surface formed by exposing the magnetic generator 1 and the electrode 2 on the upper surface. When moisture on the road surface adheres to the electrode 2 on the sensor surface, the resistance value between the electrodes 2 changes to change the road surface. It is possible to detect the wet state.

The magnetic generator 1 generates magnetism having a strength that can be detected by a vehicle traveling on a road. An electromagnet or a permanent magnet that does not require electric power can be used for the magnetic generator 1. In this case, as the magnetic generator 1, a magnet (magnetic field) to be generated that is suitable for an automatic traveling system that detects the shape and strength of the generated magnetic field (magnetic field) is used.

The molding material 3 can be made of the same epoxy mortar as used in the conventional electrode type wetness meter, or another material that can be molded.

The first, third and second and fourth electrodes 2 counted from the outside are connected by electric wires (not shown), respectively, and a lead wire is connected to each electric wire to form a pair. Are drawn out of the lane marker wetness meter. The electric resistance between the lead wires changes in accordance with the degree of wetness of the sensor surface, and the degree of wetness can be detected by measuring the electric resistance between the lead wires with a measuring device.

In the lane marker wet meter shown in FIG. 1, when a water film is formed on the sensor surface and the change in the electric resistance between the lead wires is measured, it shows a large change from the electric resistance in the dry state. Function was confirmed. Further, the magnetic field generated from the magnetic generator 1 was sufficiently large, and the function as a lane marker was confirmed. Further, when the vehicle passed on the road on which the lane marker wetness meter was installed, a transient current was generated from the electrode 2. It is considered that this is because the magnetic field from the magnetic generator 1 was changed by the traffic of the vehicle, and the induced current was transmitted through the electrode 2. Therefore, the lane marker wetness meter not only enables a vehicle passing on the road to recognize the traveling lane, and also allows a road manager to recognize the degree of wetness of the road surface, but also the traffic amount, frequency, speed, etc. of the vehicle. It has been found that this device can also recognize the state of.

[0013]

Embodiment 2 In a second embodiment of the lane marker wetness meter according to the present invention, as shown in FIG. 2, a plurality of ring-shaped electrodes 2 are arranged at equal intervals on the center side, and A ring-shaped magnetic generator 1 is arranged outside the electrode 2 so as to surround it at an interval, and the magnetic generator 1 and the electrode 2 are molded and integrated with a molding material 3 in the arrangement state. You can also.

[0014]

Third Embodiment In a third embodiment of the lane marker wetness meter according to the present invention, as shown in FIG. 3, a ring-shaped electrode 2 is provided between the inside and outside of a ring-shaped magnetic generator 1. And the magnetic generator 1 and the electrode 2 are arranged concentrically.
Can be integrated by molding with the molding material 3 in the arrangement state.

1 to 3 show that each of the magnetic generators 1 and the electrodes 2 is ring-shaped and arranged concentrically, the shapes of the magnetic generators 1 and the electrodes 2 are linear, corrugated, and the like. , A semicircle, a square, a polygon, and the like. Further, they need not necessarily be arranged concentrically, and may be arranged in parallel or irregularly. Further, the number of the magnetic generators 1 and the number of the electrodes 2 are not limited, and the magnetic generators and the electrodes 2 can be designed so as to obtain desired changes in magnetic characteristics and electric resistance.

[0016]

The lane marker wetness meter according to claims 1 to 3 of the present invention has the following effects. 1. Since the magnetic generator 1 and the electrode 2 are molded and integrated with the molding material 3, the cost can be reduced as compared with the case where they are separately formed, and can be embedded at a lower cost than separately. The construction period can be significantly reduced, and traffic regulations and traffic congestion due to burial work are eased. 2. Since the magnetic generator 1 and the electrode 2 are integrated,
Regular maintenance can be done together,
It is simplified, maintenance personnel, time and costs are greatly reduced, and maintenance costs are greatly reduced. 3. The magnetic generator 1 and the electrode 2 are sufficiently protected by the molding material 3. 4. Compared to the case where the lane marker and the wetness meter are separate,
The amount of the molding material 3 used can be reduced, which contributes to cost reduction. 5. Since the magnetic generator 1 and the electrode 2 are integrated,
When the magnetic field generated by the magnetic generator 1 changes under the influence of a vehicle passing therethrough, an induced electromotive force is generated in the electrode 2 due to a change in magnetic flux density. In the present invention, by detecting this current, it can be used as a sensor for measuring the traffic state of the vehicle.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a lane marker wetness meter according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a lane marker wetness meter according to a second embodiment of the present invention.

FIG. 3 is a perspective view showing a third embodiment of a lane marker wetness meter according to the present invention.

4A is a front view of a conventional wet meter, FIG. 4B is a cross-sectional view of the wet meter, and FIG. 4C is a connection diagram of the wet meter.

[Explanation of symbols]

 1 is a magnetic generator 2 is an electrode 3 is a molding material

Claims (3)

[Claims] The present invention relates to a magnetic generator for generating magnetism for lane recognition which can be detected by a vehicle running on a road, and to a plurality of electrodes arranged at a predetermined interval. A lane marker wet meter in which the electrode (2) of a wet body capable of detecting the wet state of the road surface by changing the resistance value between (2) and the molded body (3) is integrated with the wet material. 2. The magnetic generator (1) and the electrode (2)
A lane marker wetness meter in which either one is arranged in a ring shape so as to surround the other at an interval, and is molded and integrated with a molding material (3) in the arrangement state. 3. A lane recognizing magnetic generator (1) and moisture-detecting electrodes (2) arranged at predetermined intervals are integrated via a molding material (3), and the traffic of the vehicle is increased. ,frequency,
A lane marker wetness meter that enables recognition of traffic conditions such as speed and recognition of lanes from vehicles traveling on the road surface.