JP2000018947A - Information managing device underground burying - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately and speedily obtain information stored in an underground buried body by accurately and speedily specifying the burying position of the underground buried body. SOLUTION: A stake 1 for survey as an underground burided body consists of a stake main body 1a and an auxiliary stake 1b, which is separable, and the auxiliary stake 1b has a transmission and reception circuit including a reception part, a transmission part, a memory, and a power source part inside. A communication device main body 3 radiates radio waves to the stake 1 for survey buried in the ground through a surveying machine 4. When the radio wave is received by the transmission and reception part in the auxiliary stake 1b, the power source part generates a source voltage, and the transmission and reception part begins to operate to send a signal of stored information out. The signal from the auxiliary stake 1b is received by the communication device main body 3 so as to obtain the information. Even when the stake main body 1a is lost, the presence of the auxiliary stake 1b and the information can be obtained from the auxiliary stake 1b left in the ground.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a state where various kinds of information such as survey points, boundaries, reference points such as cadastral land, burial positions of buried objects such as gas pipes, water pipes, and communication lines are buried underground. The present invention relates to an information management device for underground burial that can hold the information in this state and output the information of the holding state as needed.

[0002]

2. Description of the Related Art For example, land information, residential land, farmland, roads,
In surveying forests, disaster prevention, etc., surveying stakes (index stakes) are driven into key points under the ground, and surveying is performed using these surveying stakes as reference points. Such a surveying pile serves as a reference point for surveying, and it is desirable that the surveying pile be present at the driving position for a long period of time and that the buried position be easily confirmed.

In addition, when water pipes, gas pipes, power lines, communication lines, and the like are buried in roads and residential lands, they may be damaged if they are dug up by construction heavy equipment without knowing them during road construction or house construction. There is. Therefore, there is a case where an indicator pile indicating the buried position of a buried object such as a gas pipe is driven into the ground in the vicinity. In addition, when it is necessary to replace or repair the buried object, it is performed with reference to the sketch created at the time of burial, but identifying its position may be necessary if the surrounding environment or terrain is changing. Many are difficult to identify. Therefore, when burying a buried object, an indicator pile is driven into the ground.

[0004]

However, the surveying stakes and indexing stakes used in each of the above-mentioned applications are driven into the ground with their upper ends protruding from the surface of the ground. In the zone, it is easy to be pulled out or broken, and easily lost in a short time. In surveying, the loss of surveying stakes means re-execution of surveying, and the loss of manpower and time is great. Also, in a mountainous area or the like, even if the surveying stake is left, it is hard to find it because it is covered with weeds, shrubs, or covered with earth and sand. On the other hand, if the indicator pile indicating the location of gas pipes is lost or completely buried in the ground, it may take time to recover from gas accidents due to natural disasters, etc., and the scale of the disaster may increase There is also. Therefore, development of a system that can prevent loss of the surveying stake and the index stake and that can easily and quickly obtain information on the surveying and the index is desired.

SUMMARY OF THE INVENTION It is an object of the present invention to be able to hold information on a survey reference point, the buried position and contents of various buried objects in a state buried in the ground, and to store information stored in this buried state. Is to provide an underground information management device capable of acquiring the information accurately and quickly.

[0006]

In order to solve the above-mentioned problems, an underground information management apparatus according to the present invention comprises a receiving unit for receiving an external radio wave, and a memory for storing and holding written information. A transmitting unit that reads out information stored in the memory by receiving the receiving unit and sends out the information as radio waves,
Built-in transmission / reception circuit including a power supply unit that supplies power to the reception unit, the memory, and the transmission unit based on external radio wave energy, and is partially or entirely buried underground. An object, an operation unit, a transmission unit that transmits a signal corresponding to an operation of the operation unit toward the underground object, a reception unit that receives a radio wave from the underground object, and outputs this reception information. And a communication device having a coil as an antenna connected to the transmission / reception circuit.

In the above structure, the transmission / reception circuit of the underground object includes connection means for performing communication with the outside by wire, and the power supply unit of the underground object rectifies radio waves from the communication device to supply power. And a regulator circuit for controlling the output of the rectifier circuit to a predetermined output voltage.

Further, the transmission / reception circuit of the underground object is formed as one package, and is integrated into the underground object when molding the underground object, or the transmission / reception circuit is installed in a hollow portion formed in advance in the underground object. Can be encapsulated.

In addition, an underground object can be formed on a pile, and in this case, a lower auxiliary pile having a built-in transmission / reception circuit and a pile main body detachably combined with the upper part of the auxiliary pile are constituted. In particular, when used for surveying, the auxiliary pile has a sharpened portion at the lower end for underground driving,
It has a fitting recess at the upper end, and the pile main body has a fitting protrusion at the lower end that can be separably fitted with the fitting recess of the auxiliary pile, and a flat reference surface for surveying. It can be configured to have a mark as follows.

[0010] The operation unit of the communication device may include input means for writing information to an underground object, and the reception unit of the communication device may output the received content in voice. Further, the transmission / reception circuit of the communication device can be provided in a portable housing, and the coil of the communication device can be supported by the rod-shaped support member.

[0011] With the above structure, the operation unit of the communication device is operated to emit radio waves from the coil, and at least a part of the coil is received by the reception unit in the transmission / reception circuit of the underground object buried in the ground to drive the power supply unit. The information stored in the memory is transmitted by radio waves, this signal is received by the communication device, and the output of the received information allows the location of the underground object to be buried. Various information held can be acquired.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing an underground information management apparatus according to an embodiment of the present invention. In the following, a survey pile serving as a reference point for survey will be described as an example of an underground object. In FIG. 1, reference numeral 1 denotes a surveying pile, which is driven into the ground 2. 3,
Reference numeral 4 denotes a communication device main body and an exploration device which are carried by an operator who performs surveying based on the surveying stake 1, and the communication device main body 3 and the exploration device 4 are connected by a cable 5.
The communication device is constituted by the communication device main body 3, the probe 4 and the cable 5.

FIG. 2 is an explanatory view of the surveying stake 1. Figure 1,
As shown in FIG. 2, the surveying pile 1 as an underground buried object is
The upper pile main body 1a and the lower auxiliary pile 1b can be separated into upper and lower two parts, and are formed into a prismatic shape with plastic. The upper pile body 1a is provided with a cross-shaped reference mark 1c on a flat upper end surface, and a pyramid-shaped fitting projection 1d is formed on a lower end. As the pile main body 1a, a surveying pile serving as a reference point for surveying which has been generally commercially available can be used as it is. The auxiliary pile 1b has a pyramid-shaped sharp portion 1e for driving into the ground at the lower end, and a pyramid-shaped fitting recess 1f formed on the upper surface. Then, the fitting projection 1d of the pile main body 1a and the fitting concave portion 1f of the auxiliary pile 1b are fitted to each other, so that they can be used in combination as one surveying pile 1. That is, the surveying stake 1 applies the sharpened portion 1e of the auxiliary stake 1b to the ground surface 2 and strikes the upper end surface of the pile main body 1a with a driving machine or the like to thereby apply the force to the fitting projection 1d and the fitting recess. It can be transmitted to the auxiliary pile 1b via 1f and can be driven into the ground. This surveying pile 1 has a top surface of about 5 cm × 5c as one side.
m is a square shape, and the square pillar portion of the pile body 1a is about 50c.
m, the prismatic portion of the auxiliary pile 1b is set to have a length of about 10 cm.

The auxiliary stake 1b has a built-in electronic circuit (transmitter / receiver circuit) capable of transmitting and receiving by radio waves, and stores information such as various coordinates. This electronic circuit is transmitted from the communication device main body 3 carried by the worker. Radio wave (for example, the frequency is 2 MHz
(30 MHz, preferably 10 MHz band), and the communication device main body 3 can receive information such as various coordinates. Further, information can be transmitted from the communication device main body 3 to the auxiliary pile 1b.

As shown in FIG. 1, the communication device main body 3 includes a shoulder band 3a and headphones 3b. The headphones 3b are not used when a speaker provided in the communication device main body 3 is used. The probe 4 includes a coil 4a as an antenna and a rod-shaped support member 4b for supporting the coil 4a. The coil 4a is connected to the communication device main body 3 by a cable 5 inserted through the support member 4b.

FIG. 3 is an external view showing details of the communication device main body 3 and the probe 4. The communication device main body 3 has an operation panel 6 on an upper surface of a housing 3c, and a meter 6 indicating electric field strength.
a, a connector 6b for connecting the cable 5, a power switch 6c, a sensitivity adjustment knob 6d for adjusting reception sensitivity, an output adjustment knob 6e for adjusting transmission output,
Jap 6 for inserting plug of headphones 3b
f, speaker 6g used in place of headphones 3b,
A volume control knob 6h for adjusting the sound output of the headphones 3b and the speaker 6g, a ten key (ten key) 6i for operating a numerical sound output circuit (not shown) corresponding to the key number, and a command key 6j are provided. I have.

The probe 4 has an angle adjuster 4c attached to the joint between the coil 4a and the support member 4b so that the coil 4a can be kept horizontal with respect to the ground even when the support member 4b is easily held. I have to. The support member 4b is provided with a telescopic mechanism that can change the length according to the height of the user.

FIG. 4 is a block diagram showing a detailed configuration of the transmission / reception circuit 100 built in the auxiliary pile 1b. The transmission / reception circuit 100 includes a tone (TONE) oscillator 101 that oscillates an audible band frequency corresponding to a plurality of numbers, a modulation circuit 102 that modulates an output signal of the tone oscillator 101, and an output signal of the modulation circuit 102 that is output as a transmission frequency. Power amplifier circuit 103, a BPF (bandpass filter) 104 that passes only the transmission frequency band, and the antenna 10 for both transmission and reception.
5. BPF 10 for selectively outputting radio waves from antenna 105
6. A high-frequency amplifier 107 for amplifying radio waves from the BPF 106, a detector 108 for detecting an output signal of the high-frequency amplifier 107, and a DTMF based on the output of the detector 108.
(Dual Tone Multi Frequency
y) DTMF decoder 109 for restoring tone signal, D
Using the output of the TMF decoder 109 as a start signal, a digital recorder 110 for obtaining audio information and the like from the detection circuit 108, a memory circuit 111 for storing information output of the digital recorder 110, and an output obtained by rectifying radio waves from the antenna 105. A power supply unit 112 for charging a capacitor (not shown) with a voltage is provided.

FIG. 5 is a circuit diagram showing the details of the power supply section 112. A capacitor 201 is connected to one terminal of the antenna 105.
Are connected, and the other terminal is grounded. The other end of the capacitor 201 is connected to the cathode of the diode 202 and the anode of the diode 203. The anode of the diode 202 is grounded, and the cathode of the diode 203 is connected to a capacitor block 204 to be charged.
Of one end, resistor 205, switching regulator IC2
06 and one end of the choke coil 207 are connected. Both ends of the choke coil 207 are connected to predetermined terminals of the switching regulator IC 206. The switching regulator IC 206 includes a resistor 208, a capacitor 209, and a resistor 210 as external connection parts.
Are connected to predetermined terminals, and a ground terminal is grounded. The output terminal of the switching regulator IC 206 has the cathode of the diode 211 and the diode 21
Two anodes are connected. The anode of the diode 211 is grounded, and one end of the resistor 213 and one end of the capacitor 214 are connected to the cathode of the diode 212. The resistor 215 is connected between the other end of the resistor 213 and the ground, and the other end of the capacitor 214 is grounded. A voltage monitor 216 is connected to the cathode of the diode 212 serving as a power supply output unit. The voltage monitor 216 monitors the output voltage. When the output voltage reaches a specified voltage value, a contact 217 of a relay (built in the voltage monitor 216) is turned on, and Supply.

Although a switching regulator IC 206 with low power consumption is most suitable as a regulator circuit for obtaining a stabilized voltage, a series-type regulator such as a three-terminal regulator can be used instead.

The surveying stake 1 used as a reference point for surveying is used while buried underground for a long period of time.
Even if a battery is built in the surveying stake 1, the battery is discharged at the time of use and cannot be used. A method of charging with a solar cell or the like is also conceivable, but it is difficult to obtain sunlight because the auxiliary pile 1b is buried underground 2. Therefore, as is apparent from the configurations of FIGS. 4 and 5, the transmitting / receiving circuit 100 is not supplied with power by connecting a power supply line from a battery or an external device for operating the circuit. Power is supplied wirelessly from the main body 3.

As shown in FIGS. 1 and 2, the transmission / reception circuit 100 is mounted on a plurality of substrates 1g, is configured as one package 1h, and then is stored in a storage portion 1i secured in the auxiliary pile 1b. Put in. After the storage, the opening of the storage section 1i is sealed by molding, fusion or the like. Or,
The auxiliary pile 1b can be buried when it is manufactured by molding, and in this case, there is an advantage that it is not necessary to perform sealing in a later step.

FIG. 6 is a block diagram showing a detailed configuration of the transmission / reception circuit 300 built in the communication device main body 3. BPF (hand pass filter) is installed in the coil 4a of the spacecraft 4
A high-frequency amplifier circuit 302, a detection circuit 303, and a low-frequency amplifier circuit 304 are connected in series to the BPF 301. The speaker 6g is connected to the low-frequency amplifier circuit 304. Numeric keypad 6i of operation panel 6
And the command key 6j (see FIG. 3)
05 and DTMF echo 306 are connected.
A modulation circuit 307 is connected to the DTMF echo 306, a power amplification circuit 308 is connected to the modulation circuits 307 and 305, and a BPF is connected to the power amplification circuit 308.
309 and the probe 4 are sequentially connected. Further, although not shown, a battery for supplying power to each circuit is mounted.

In the above configuration, first, an operation of transmitting information from the communication device main body 3 to the auxiliary pile 1b of the surveying pile 1 and storing the information in the transmission / reception circuit 100 of the auxiliary pile 1b will be described. This writing can be performed before or after the surveying pile 1 is buried. Now, the latter will be described as an example. First, as described above, the surveying stake 1 is driven into the ground at a desired location on the ground surface 2 by a driving machine or the like, and the upper end of the surveying stake 1 is projected above the ground surface 2 so that the mark 1c serving as a reference point of the survey is formed. Are exposed and can be recognized from the outside. That is, the surveying stake 1 is driven into the ground so that the surveying stake 1 is used as a reference for surveying. In this state, of course,
The auxiliary pile 1b is completely buried under the ground below the pile main body 1a. On the other hand, the worker connects the communication device main body 3 and the probe 4 with the cable 5, and connects the coil 4a and the support member 4b.
Is adjusted, and the power switch 6c is turned on. At this time, the sensitivity adjustment knob 6d is set so that radio waves from the auxiliary pile 1b of the surveying pile 1 can be received.

When the preparation is completed in this way, the "C" key (charge key) of the command key 6j of the operation panel 6 is depressed, the support member 4b of the probe 4 is held, and the coil 4a is Set so that it is located above.
When the "C" key of the command key 6j of the operation panel 6 is operated, the A1 signal is input to the modulation circuit 305, and the modulation signal corresponding thereto is amplified by the power amplification circuit 308 at a predetermined frequency. Radio waves are radiated from the coil 4a of the spacecraft 4 after the spurious is removed.

On the auxiliary pile 1b side of the surveying pile 1, a probe 4
When the coil 4a enters the receivable area, the radio wave from the communication device main body 3 is received by the antenna 105, and the received signal is input to the power supply unit 112. The power supply unit 112 rectifies the received signal from the capacitor 201 by the diodes 202 and 203 in FIG. 5 and charges the capacitor block 204. When energy is stored in the capacitor block 204, the switching regulator IC 206 starts switching operation, and operates so that the output voltage maintains the set value based on the feedback value of the output voltage. The ripple generated by the switching operation is choke coil 2
07. The power supply voltage obtained through the diode 212 is supplied to each circuit shown in FIG. 4 via the contact 217, and the transmission / reception circuit 100 is brought into a completely operable state. At this time, after the tone signal (signal notifying the completion of the preparation of the transmission / reception circuit 100) generated by the tone oscillator 101 is modulated by the modulation circuit 102, the power amplification circuit 1
03, and the power is amplified by the antenna 10 through the BPF 104.
Radiated from 5. This radio wave is received by the coil 4a of the spacecraft 4.

The communication apparatus main body 3 inputs the signal received from the probe 4 to the high-frequency amplifier circuit 302 via the BPF 301, amplifies the signal, and detects the signal with the detection circuit 303. The detected signal is amplified by the low frequency amplifier circuit 304, and the speaker 6g
Is driven to generate a tone signal. The worker hears the tone signal and confirms that the auxiliary pile 1b is in a state where information (coordinate information) X, Y, and Z serving as a reference for surveying can be recorded, and then, among the command keys 6j of the operation panel 6, Key (save key) is pressed, and (X key + numeric key 6i), (Y key + numeric key 6i) and (Z key + numeric key 6i) are sequentially operated. The audio signal generated by these operations is modulated by the modulation circuit 307 and then transmitted to the probe 4 via the power amplification circuit 308 and the BPF 309.

In the auxiliary pile 1b, the signal received by the antenna 105 is input to the high-frequency amplifier circuit 107 through the BPF 106 and is amplified. The output signal of the high-frequency amplification circuit 107 is detected by a detection circuit 108, and the detection output is DT.
It is input to the MF decoder 109 and the digital recorder 110. The DTMF decoder 109 outputs a recording signal corresponding to the “S + S” (S is operated twice consecutively) command from the base unit 3 to the digital recorder 110, and activates the digital recorder 110. Digital recorder 1
The A / D converter 10 converts the audio signal from the detection circuit 108 into a digital signal, and stores the digital signal in the memory circuit 111.

By storing the coordinate information X, Y, and Z serving as the reference points of the survey in the auxiliary pile 1b of the survey pile 1, the burying operation of the survey pile 1 is completed. When the coordinate information X, Y, and Z are stored in the same manner as described above before driving the auxiliary pile 1b of the surveying stake 1, the surveying stake 1 is then placed underground in the same manner as described above. It is buried so that its upper end is exposed on the ground surface.

Next, the operation of calling the coordinate information X, Y, Z stored in the auxiliary pile 1b of the surveying pile 1 will be described. First, the worker connects the communication device main body 3 and the probe 4 with the cable 5, adjusts the angle between the coil 4a and the support member 4b, and turns on the power switch 6c. At this time, the sensitivity adjustment knob 6d is set so that a radio wave from the auxiliary pile 1b of the surveying pile 1 can be received even from a relatively distant place. Next, similarly to the above, the "C" key (charge key) of the command key 6j of the operation panel 6
By pressing, the power supply unit 112 of the transmission / reception circuit 100 in the auxiliary pile 1b of the survey pile 1 is driven, and the transmission / reception circuit 100 becomes operable. By confirming this state on the communication device main body 3 side in the same manner as described above, when the operator operates the “T” key on the operation panel 6, the DTMF encoder 306 operates and the transmission / reception circuit 1 on the auxiliary pile 1 b side.
A tone signal corresponding to a “PLAY” command for activating the digital recorder 110 of 00 is generated. This tone signal is modulated by the modulation circuit 307,
The signal is amplified by the power amplifier circuit 308 and transmitted to the probe 4 through the BPF 309.

When the transmission / reception circuit 100 of the auxiliary pile 1b receives a radio wave from the probe 4, the radio wave is input to the high-frequency amplification circuit 107 through the BPF 106, and amplification is performed. The output signal of the high-frequency amplification circuit 107 is detected by a detection circuit 108,
This detection output is input to the DTMF decoder 109 and the digital recorder 110. DTMF decoder 10
9 outputs a command signal corresponding to the “PLAY” command from the communication device main body 3 to the digital recorder 110 and activates the digital recorder 110. In the digital recorder 110, the audio content is sent to the modulation circuit 102 in response to the command signal from the DTMF decoder 109, and the modulated signal is amplified by the power amplification circuit 103. High-frequency power is radiated as radio waves from the antenna 105 through the BPF 104.

In the communication device main body 3, a response signal from the auxiliary pile 1 b is input to the high-frequency amplifier circuit 302 via the BPF 301 through the probe 4, and the amplified signal is detected by the detection circuit 303. The detection output is the low frequency amplification circuit 304
, The speaker 6g is driven, and a message regarding the coordinate information X, Y, Z from the auxiliary pile 1b side is output as a voice. The audio output can be adjusted to an optimal volume by the audio adjustment knob 6h. In this way, the operator can obtain the coordinate information X, Y, and Z of the surveying stake 1 and perform an operation such as surveying.

When the surveying pile 1 is entirely buried underground due to a disaster or the like, coordinate information of the surveying pile 1 can be obtained in the same manner as described above. Further, even if the upper pile main body 1a of the survey pile 1 is intentionally or accidentally pulled out, the divided lower auxiliary pile 1b remains in the underground 2 so that coordinate information can be obtained in the same manner as described above. it can. Therefore, work such as surveying can be performed using the obtained coordinate information.

Writing of information from the communication device main body 3 to the auxiliary pile 1b can be performed not only by wireless but also by wire. In this case, it is necessary to provide a connection terminal or a jack for connecting a cable to the communication device body 3 or another terminal in advance on the auxiliary pile 1b. The connection terminal and the jack are configured to be subjected to waterproof treatment for preventing intrusion of rainwater or the like, or to be provided with a waterproof cap. Auxiliary pile 1
The basic operation of writing information to b and reading information to the communication device main body 3 is the same for both wireless and wired. In addition, in the combination of the configuration shown in FIG. 4 and the configuration shown in FIG. 6, a high frequency is used for communication. However, if a circuit configuration based on a digital signal level is added, communication can be performed without using modulation means. . Further, the frequency of the radio wave used for communication is not limited to the above embodiment, and a weak radio wave can be used by adopting a spectrum transmission / reception method. In addition, information other than the survey information, that is, embedded information such as gas pipes, electric (telephone) cables, etc., is performed using the communication device main body 3 that meets the specifications of the user company. When writing audio information, a microphone is connected to a microphone jack (not shown), the "S" key is pressed twice, and the operator sequentially utters desired information within a predetermined time, thereby generating the audio signal. Is modulated by the modulation circuit 307, and then the power amplification circuit 30
8, and can be transmitted to the spacecraft 4 via the BPF 309. Further, the information read into the communication device main body 3 can be output by a method other than voice. In addition, the present invention can be variously changed in design without departing from the basic technical idea.

[0035]

As described above, according to the present invention, a transmission / reception circuit is built in an underground buried object side to store information, and the communication is performed with the transmission / reception circuit on the underground buried object side. By using a communication device that connects a coil and a transmission / reception circuit, radio waves are radiated from the communication device side to the transmission / reception circuit built in the underground object to be searched, and response radio waves are radiated from the underground object side If this radio wave can be received by the communication device, it is possible to know that there is an underground object near the communication device, and to easily and quickly know the position of the underground object, In addition, it is possible to easily and quickly grasp various kinds of information written on the underground object.

[Brief description of the drawings]

FIG. 1 is a configuration diagram schematically showing an underground information management apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a survey pile used as an underground object in the underground information management apparatus.

FIG. 3 is an external view showing details of a communication device and a probe used in the underground information management device.

FIG. 4 is a block diagram showing a detailed configuration of a transmission / reception circuit built in an auxiliary pile in the surveying pile shown in FIGS. 1 and 2;

FIG. 5 is a circuit diagram showing details of a power supply unit of the transmission / reception circuit.

FIG. 6 is a block diagram showing a detailed configuration of a transmission / reception circuit built in a communication device main body of the communication device shown in FIGS. 1 and 3;

[Explanation of symbols]

REFERENCE SIGNS LIST 1 surveying pile (underground buried object) 1a pile main body 1b auxiliary pile 3 communication device main body 4 probe 4a coil 4b support member 6 operation panel 100 transmission / reception circuit 101 tone oscillator 102, 305 modulation circuit 103, 308 power amplification circuit 104 , 106, 301, 309 Bandpass filter (BPF) 105 Antenna 107, 302 High frequency amplifier 108, 303 Detector 109, 306 DTMF decoder 110 Digital recorder 111 Memory circuit 112 Power supply unit 201 Capacitor 202, 203 Diode 204 Capacitor block 206 Switching Regulator IC 300 Transmission / reception circuit 304 Low frequency amplification circuit 307 Modulation circuit

Claims (11)

[Claims] 1. A receiving unit for receiving an external radio wave, a memory for storing and holding written information, and a transmitting unit for reading out information stored in the memory by receiving the receiving unit and transmitting it as a radio wave. A built-in transmission / reception circuit including a power supply unit for supplying power to the reception unit, the memory, and the transmission unit based on radio wave energy from the outside, and a part or whole of the ground is buried underground. A buried object, an operation unit, a transmission unit that transmits a signal corresponding to an operation of the operation unit toward the underground buried object, a reception unit that receives a radio wave from the underground buried object and outputs the reception information And a communication device having a coil as an antenna connected to the transmission / reception circuit. 2. The underground information management apparatus according to claim 1, wherein the underground object transmission / reception circuit includes connection means for performing communication with the outside by wire. 3. A power supply unit of an underground object includes a rectifier circuit for rectifying radio waves from a communication device to be a power supply, and a regulator circuit for controlling an output of the rectifier circuit to a predetermined output voltage. 3. The underground information management device according to 1 or 2. 4. The underground buried information according to claim 1, wherein the underground buried transmission / reception circuit is formed as one package and is integrated into the underground buried object when molding the underground buried object. Management device. 5. The underground information management apparatus according to claim 1, wherein a transmission / reception circuit of the underground object is sealed in a hollow portion formed in the underground object in advance. 6. The underground information management apparatus according to claim 1, wherein the underground object is formed in a pile shape. 7. The information for underground burial according to claim 6, wherein the underground buried object is composed of a lower auxiliary pile having a built-in transmission / reception circuit and a pile main body detachably combined with the upper part of the auxiliary pile. Management device. 8. An auxiliary pile has a sharp portion for driving into the ground at a lower end, a concave portion for fitting at an upper end, and a pile main body is separable from a concave portion for fitting of the auxiliary pile at a lower end. The underground information management device according to claim 7, further comprising a fitting protrusion that can be fitted, and a mark serving as a reference point for surveying on a flat upper end surface. 9. The underground information management apparatus according to claim 1, wherein the operation unit of the communication device includes input means for writing information to a memory of the underground object. 10. The underground information management device according to claim 8, wherein the receiving unit of the communication device outputs the received content as voice. 11. The underground information management system according to claim 1, wherein a transmission / reception circuit of the communication device is provided in a portable housing, and a coil of the communication device is supported by a rod-shaped support member. apparatus.