JPH0853878A - Measuring cover antenna for underground embedded article - Google Patents

Abstract

PURPOSE:To make it possible to measure on a ground by installing an antenna, which transmits a radio signal, to a manhole cover installed to a road surface and radiating a measuring signal radio wave for water leakage, water quality and gas leakage of an embedded pipeline. CONSTITUTION:An antenna 8, which transmits a radio signal is installed to a cover 7 of a manhole, a sluice valve and a plus for an embedded article 1, such as water supply and drainage pipe lines, a gas pipeline and a power cable. When the embedded article 1 is found in a city water pipeline, water leakage and water quality or the like are detected with a measuring apparatus 5 by way of a sensor 4 while gas leakage is detected in the same way in case of a gas pipe-line. In case of the cable, electric leakage and breaking of wire or the like are detected with the measuring apparatus 5 by way of the sensor 4, thereby transmitting a radio signal to a recorder 10 on a ground by means of a transmitter 6 from an antenna 8. As described above, an antenna is incorporated in a manhole cover, a sluice valve cover of water supply and drainage pipelines or the like so that measurement data for the water supply and drainage pipe-lines, the gas pipeline and the power cable or the like may be radiated to a ground surface space as a radio signal thereby providing the measurement result by way of the signal reception. This construction makes it possible to eliminate the need for road excavation and hence prevent the generation of traffic jam.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a water supply pipe, a sewer pipe, etc.
The present invention relates to a lid antenna used for measuring various states of underground buried objects.

[0002]

2. Description of the Related Art Generally, a water supply pipe, a sewer pipe, an electric power cable, a communication cable and other gas pipes are buried underground. In the water supply pipe, the state of water leakage, in the sewer pipe the state of water flow or water quality, and also in the power cable, the communication cable leakage, disconnection, further measuring the gas leak state in the gas pipe, And it is necessary to observe. For this reason, measuring instruments and observation instruments are often installed in manholes, but it is troublesome for the observer to enter the manhole during observation, and it is desirable to be able to observe on the ground. There is.

From the above, the underground buried object measuring system as shown in FIG. 3 can be seen. That is, as shown in the figure, a measuring instrument 17 is installed in an underground buried object 15 arranged under the road 14, in this example, a manhole 16 through which a sewer pipe runs.
A signal line 18 is connected from the measuring instrument 17 through the ground to a recorder 20 provided on, for example, a utility pole 19, and a recorder 20 in which the state of the underground buried object 15, for example, the water flow state is arranged on the ground is installed. I was able to observe the measurement results by looking.

The measuring device 17 is connected to a sensor 21 provided in an underground buried object 15 such as a sewer pipe. In the figure, 22 is an iron lid of the manhole 16, 23 is a roadway, 2
4 indicates a sidewalk.

[0005]

In the above-mentioned underground buried object measuring method, when the signal line 18 from the measuring device 17 to the recording device 20 is wired underground, the road 14 must be excavated. In addition to the construction costs, there was the problem of causing traffic congestion, and there was also the problem that the observation points were fixed and could not be moved.

The present invention has been made in consideration of the above-mentioned conventional problems, and an object of the present invention is to provide a lid antenna which can be equipped with a measuring device without excavating a road and which allows a recording device or the like to be freely installed.

[0007]

In order to achieve the above object, the present invention has an antenna member to which a measurement signal of an underground buried object is connected via a transmitter, and the measurement signal radio wave is transmitted from the antenna member to the ground surface space. The lid antenna for radiating the underground buried object shall be constructed.

Further, a lid antenna for underground buried object measurement is constructed by combining an electrically insulating synthetic resin material with a part of a lid body made of an iron material, and holding the antenna member by the synthetic resin material.

Further, the lid antenna for measuring the underground buried object is configured as a manhole lid or a water control valve lid.

[0010]

In the above-mentioned underground lid for measuring an underground buried object, the antenna member receives a signal from the measuring instrument for the underground buried object through a transmitter, and the antenna member receives a measurement signal radio wave having measurement data on the ground. It will be recorded by the recorder installed at the location and will be used for observation.

[0011]

EXAMPLE A lid antenna for measuring an underground buried object according to an example of the present invention will be described below. In FIG. 1, 1 is a road 2
It is a sewer pipe that is piped below, and a part of it passes through the manhole 3. The sewer pipe 1 is provided with a sensor 4 for detecting the flow rate, and the sensor 4 is connected to a measuring instrument 5 installed in the manhole 3. The measuring device 5 has a transmitter 6, and the transmitter 6 is connected to the antenna member 8 provided in the manhole 7. The antenna member 8 is electrically insulated from the lid main body made of an iron material, and radiates a signal radio wave to the surface space. A support 9 such as a utility pole is provided on the ground, and a recorder 10 is attached to the support 9. The recorder 10 receives and records a signal radio wave, and provides it for observation. In the figure, 11 is a roadway and 12 is a sidewalk.

In the above structure, the flow rate in the sewer pipe 1 is detected by the sensor 4, measured by the measuring device 5 and transmitted from the transmitter 6 to the antenna member 8 of the lid 7 of the manhole 3, and the antenna member 8 is measured. A signal radio wave including data is radiated to the surface space, and the recorder 10 installed on the ground records this and provides it for observation.

In this embodiment, a signal radio wave containing measurement data is radiated from the antenna member 8 of the lid 7 to the ground surface space, and the recorder 10 receives and records the signal radio wave, that is, because of wireless transmission. Since it is not necessary to lead the signal line out of the ground to install the recorder 10, and therefore road excavation work is not performed, the installation work can be facilitated and the installation cost can be reduced. Also,
The installation place of the recorder 10 is not fixed and can be installed or moved to any place. Further, the recorder 10 is mounted on, for example, the vehicle 13 in addition to being mounted on the telephone pole 9.
Since the measurement results can be observed inside, it is also possible to go around a large number of observation points on a vehicle and observe them quickly.

Signal radio waves radiated from the antenna member 8 are in a frequency band that does not affect other communication equipment, and
It should be weak. Further, although the oscillator 6 is incorporated in the measuring device 5 in the manhole 3, it may be attached in the manhole or on the back surface of the lid 7. When provided in this way, radio waves do not propagate directly from the transmitter 6 to the ground surface space.
This is because the lid 7 is made of iron and has a shielding effect, and assuming that the transmitted radio wave is positive, the underground is negative and the transmitted radio wave is easily absorbed into the ground.

Further, although the underground buried object is the sewer pipe in this embodiment, it may be any of the water pipe, the gas pipe, the power cable and the communication cable. In these cases, the measurement items are water leakage, gas leakage, electric leakage, It will be broken.

FIG. 2 shows a more detailed structure of the lid 7.
The lid 7 of this embodiment is a water control valve lid, and an electrically insulating synthetic resin material 7b is provided at the center of a disk-shaped lid body 7a made of an iron material.
The antenna member 8 is embedded and attached to the outer surface of the synthetic resin material 7b so that a part thereof is exposed. Then, the conductor 8a is guided from the antenna member 8 to the inner surface side of the lid 7, and the antenna outlet 8b is provided at the tip thereof.
Is provided.

According to this structure, the antenna member 8 is covered with the lid 7.
In addition to being able to be stably provided, the electrical insulation is reliable and the emission of radio waves can be performed without any trouble. Further, on the surface of the lid 7, since only a part of the antenna member 8 is exposed, the lid member 7 is provided on the road, and even if a vehicle, a pedestrian, or the like passes on the lid 7, the antenna member 8 is not exposed. 8 is not damaged.

The lid antenna and the antenna member of the present invention are not limited to the structures shown in the figures, but those having a function of radiating a measurement signal radio wave can be freely modified, and the lid antenna is a manhole. In addition to the lid and the water control valve lid, the lid can be configured as a stopper lid.

[0019]

As is clear from the description of the above embodiment,
The present invention incorporates an antenna member into a manhole cover, a water control valve cover of a water supply / sewer pipe, a lid of a plug, etc., and sends measurement data of a water supply pipe, a sewer pipe, a gas pipe, a power cable and other communication cables to the ground surface space. Since the radio waves are radiated and received to obtain the measurement results, the measurement results can be easily observed. In addition, it is not necessary to pull out the signal line from the ground to install the equipment, and therefore road excavation work is not required, so that the installation cost and traffic congestion are not caused. In addition, since the antenna configuration uses the lid, the antenna does not interfere with the surface of the earth, and its effect is great.

[Brief description of drawings]

FIG. 1 is a block diagram of an underground buried object measuring system equipped with a lid antenna for measuring an underground buried object according to an embodiment of the present invention.

FIG. 2 is a sectional view of a lid antenna for measurement of the underground buried object.

[Fig. 3] Configuration diagram of a conventional underground buried object measurement system

[Explanation of symbols]

 1 Sewer pipe 2 Road 3 Manhole 5 Measuring instrument 6 Transmitter 7 Lid 8 Antenna member 10 Recorder

Claims (6)

[Claims] 1. A lid antenna for measuring an underground buried object, comprising an antenna member to which a measured signal of the underground buried object is connected via a transmitter, and a measurement signal radio wave is radiated from the antenna member to the ground surface space. 2. The lid antenna for underground buried object measurement according to claim 1, wherein an electrically insulating synthetic resin material is combined with a part of a lid body made of an iron material, and the antenna member is held by the synthetic resin material. 3. The lid antenna for measurement of an underground buried object according to claim 2, wherein only the end portion of the antenna member is exposed. 4. The lid is a manhole lid.
A lid antenna for measuring the underground buried object described. 5. The lid antenna for measuring an underground buried object according to claim 1, wherein the lid is a water control valve lid of a water pipe which is an underground buried object. 6. The lid antenna for measuring an underground buried object according to claim 1, wherein the lid is a plug lid of a water pipe which is an underground buried object.