Manhole cover and manhole management system using the same

1. A manhole cover comprising:

a cover body;

an electronic circuit comprising at least one sensor configured to sense information inside a manhole and at least one communication circuit configured to transmit information which is obtained through the at least one sensor to outside, and embedded in the cover body;

a battery providing driving power to the electronic circuit;

a wireless power reception antenna embedded in the cover body to receive wireless power supplied from the outside and provide the wireless power to the battery;

an accommodation part having a predetermined area formed through the cover body;

a case formed of a nonconductive material and inserted into and disposed in the accommodation part; and

an opening formed through the case,

wherein the electronic circuit, the battery, and the wireless power reception antenna are disposed inside the case, and

wherein the at least one sensor is exposed to the inside of the manhole through the opening.

2. The manhole cover of claim 1 , wherein the electronic circuit includes one or more of a Global Positioning System (GPS) module, a near-field communication (NFC) circuit, a short-range wireless communication circuit, a temperature sensor, a humidity sensor, and a biometric sensor.

3. The manhole cover of claim 1 , wherein the communication circuit provides information obtained through the at least one sensor to an external server or a portable terminal.

4. A manhole management system comprising:

a manhole cover; and

a portable wireless charger configured to transmit wireless power to a wireless power reception antenna of the manhole cover to provide power for charging a battery,

wherein the manhole cover comprises:

a cover body;

an electronic circuit including at least one sensor configured to sense information inside a manhole and at least one communication circuit configured to transmit information obtained through the at least sensor to outside, and embedded in the cover body;

the battery providing driving power to the electronic circuit;

the wireless power reception antenna embedded in the cover body to receive wireless power supplied from the outside and provide the wireless power to the battery;

an accommodation part having a predetermined area formed through the cover body;

a case formed of a nonconductive material and inserted into and disposed in the accommodation part; and

an opening formed through the case,

wherein the electronic circuit, the battery, and the wireless power reception antenna are disposed inside the case, and

wherein the at least one sensor is exposed to the inside of the manhole through the opening.

5. The manhole management system of claim 4 , wherein the portable wireless charger is a wireless charging pad including a housing and a wireless power transmission antenna embedded in the housing.

6. The manhole management system of claim 5 , wherein the portable wireless charger includes a plug for electrical connection with an external power line.

7. The manhole management system of claim 5 , wherein:

the portable wireless charger further includes a main body part connected to the housing through a cable; and

the main body part includes a circuit part configured to drive the wireless power transmission antenna, and a display part configured to check a charge level of the battery embedded in the manhole cover.

8. The manhole management system of claim 4 , wherein the electronic circuit includes one or more among a Global Positioning System (GPS), a near-field communication (NFC) circuit, a short-range wireless communication circuit, a temperature sensor, a humidity sensor, and a biometric sensor.

9. The manhole management system of claim 4 , wherein the at least one communication circuit provides information obtained through the at least one sensor to an external server or a portable terminal.