JP2845759B2 - Lid antenna for measuring underground objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to water pipes, sewer pipes, etc.
The present invention relates to a lid antenna used for measuring various conditions of an underground buried object.

[0002]

2. Description of the Related Art Generally, water pipes, sewer pipes, power cables, communication cables, and other gas pipes are buried underground. In the water pipe, the water leakage state, in the sewer pipe, the water flow state or the water quality, and in the power cable, the communication cable, the leakage, the disconnection, and in the gas pipe, the gas leakage state and the like are measured. And it is necessary to observe. For this reason, measurement equipment, observation equipment, etc. are often installed in manholes, but it is troublesome for observers to enter the manhole during observation, and it is desired to enable observation on the ground. I have.

[0003] Under such circumstances, a measurement system for underground buried objects as shown in FIG. 3 can be seen. That is, as shown in the figure, a measuring instrument 17 is placed in an underground buried object 15 disposed below a road 14, in this example, a manhole 16 through which a sewer pipe passes.
A signal line 18 is connected from the measuring device 17 through the ground to a recorder 20 provided on a telephone pole 19, for example. The measurement results could be observed by looking.

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

[0005]

In the method of measuring an underground buried object, when the signal line 18 from the measuring device 17 to the recorder 20 is laid underground, the work of excavating the road 14 must be performed. In addition to the construction costs, there was a problem of causing traffic congestion, and there was also a problem that the observation points were fixed and could not be moved.

An object of the present invention is to provide a lid antenna which can install a measuring instrument without excavating a road and can freely select the installation of a recorder and the like, taking the above conventional problems into consideration.

[0007]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention has an antenna member connected to a measurement signal of an underground buried object via a transmitter, and transmits the measurement signal radio wave from the antenna member to the surface of the earth. A lid antenna for measuring underground buried objects that emits light, wherein an electrically insulating synthetic resin material is combined with a part of a lid body made of an iron material, and only the ends of the antenna member are exposed by the synthetic resin material. The gist is that it is held so as to be issued. Further, the present invention is characterized in that the cover is a manhole cover. Moreover, the gist of the present invention is that the lid is a water control valve lid of a water pipe which is an underground buried object. Further, the present invention is characterized in that the lid is a plug lid of a water pipe which is an underground buried object.

[0008]

[0009]

[0010]

The above-mentioned antenna for measuring an underground buried object has an antenna member which receives a signal from a measuring device for an underground buried object via a transmitter and transmits a measurement signal radio wave having measurement data from the antenna member to an arbitrary ground signal. A recorder installed at the place records and provides for observation.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cover antenna for measuring an underground object according to an embodiment of the present invention will be described below. In FIG. 1, 1 is a road 2
, A part of which passes through the manhole 3. The sewer pipe 1 is provided with a sensor 4 for detecting a flow rate, and this sensor 4 is connected to a measuring instrument 5 installed in the manhole 3. The measuring device 5 has a transmitter 6 and is connected to the antenna member 8 provided in the manhole 7 from the transmitter 6. The antenna member 8 is electrically insulated and held from the lid body made of an iron material, and emits a signal radio wave to the surface of the earth. A support 9 such as a telephone pole is provided on the ground, and a recorder 10 is attached to the support 9, and the recorder 10 receives and records a signal radio wave for observation. In the figure, 11 indicates a roadway and 12 indicates a sidewalk.

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

In this embodiment, a signal radio wave including measurement data is radiated from the antenna member 8 of the lid 7 to the surface of the earth, and is recorded and received by the recorder 10, that is, since it is wireless transmission, Since the signal line does not need to be led out of the ground for installation of the recorder 10, and therefore no road excavation work is performed, the installation work can be facilitated and the installation cost can be reduced. Also,
The installation location of the recorder 10 is not fixed, and can be installed or moved to any location. Also, the recorder 10 is mounted on the vehicle 13, for example, in addition to being attached to the telephone pole 9.
Since the measurement result can be observed inside the vehicle, it is possible to go around a large number of observation points by vehicle and observe quickly.

The signal wave radiated from the antenna member 8 is in a frequency band that does not affect other communication devices, and
Be weak. Although the transmitter 6 is incorporated in the measuring device 5 in the manhole 3, it may be mounted in the manhole or on the back surface of the lid 7. With this arrangement, the radio wave does not propagate directly to the ground surface from the transmitter 6 itself.
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.

In this embodiment, the underground buried object is a sewer pipe, but may be any of a water pipe, a gas pipe, a power cable, and a communication cable. In these cases, the measurement items include water leakage, gas leakage, earth leakage, and the like. It will be broken.

FIG. 2 shows the structure of the lid 7 in more detail.
The lid 7 of this embodiment is a water control valve lid. 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.

According to this configuration, the antenna member 8 is
In addition, the electric insulation can be ensured, and the emission of radio waves can be performed without any trouble. In addition, since only a part of the antenna member 8 is slightly exposed on the surface of the lid 7, the lid 7 is provided on the road, and even if a vehicle, a pedestrian, or the like passes on the road, the antenna member 8 is not covered. 8 is not damaged.

The lid antenna and the antenna member of the present invention are not limited to the structures shown in the drawings, but may be any members having a function of radiating measurement signal radio waves. In addition to the lid and the water control valve lid, it can be configured as a plug 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 / sewerage pipe, a plug cover, etc., and transmits measurement data of a water supply pipe, a sewer pipe, a gas pipe, a power cable, a communication cable, and the like to a surface space. Since the radio wave is radiated and received to obtain a measurement result, the measurement result can be easily observed. In addition, signal lines need not be pulled out from the ground for installation of the equipment, and therefore, road digging work is not required, so that installation costs and traffic congestion do not occur. In addition, since the antenna configuration uses the lid, the antenna does not interfere with the ground surface, and the effect is large.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an underground buried object measurement system including a lid antenna for measuring an underground buried object according to one embodiment of the present invention.

FIG. 2 is a cross-sectional view of the lid antenna for measuring the underground object.

FIG. 3 is a configuration diagram of a conventional underground object measurement system.

[Explanation of symbols]

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

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) E03F 7/00 E03B 9/06 G01F 23/00 G08C 17/00

Claims (4)

(57) [Claims] 1. An underground buried object having an antenna member connected to a measurement signal of the underground buried object via a transmitter, and radiating a measurement signal radio wave from the antenna member to the surface of the earth .
Of the lid body for measurement of
Combine an electrically insulating synthetic resin material with the synthetic resin
Only the ends of the antenna member are exposed by the grease material
Lid antenna for measuring underground buried objects characterized by holding
Na. 2. The lid is a manhole lid.
The antenna for measuring underground buried objects according to claim 1. 3. A water control valve for a water pipe which is an underground buried object.
The underground buried object according to claim 1, which is a lid.
Lid antenna for measurement. 4. A lid for a water pipe plug which is an underground buried object.
2. The underground buried object measurement according to claim 1,
Fixed cover antenna.