WO2001025540A1

WO2001025540A1 - The construction method of no freezing system for road

Info

Publication number: WO2001025540A1
Application number: PCT/KR2000/001105
Authority: WO
Inventors: Hean Sik Kim
Original assignee: Hean Sik Kim
Priority date: 1999-10-05
Filing date: 2000-10-04
Publication date: 2001-04-12
Also published as: AU7690700A

Abstract

This invention relates to a road anti-icing system and its construction method. The road anti-icing system includes hot wires which has a covering having a semiconductor core, a fluorine polymer jacket, a copper foil and an external cover, external heating elements, internal heating elements in which the hot wires are mounted, a central computer for controlling all devices according to the surrounding conditions, an artificial intelligence sensor connected to the external heating elements to sense the surrounding conditions of the road and transmit to the central computer, the artificial intelligence sensor having a temperature sensor and a humidity sensor within, and a central voltage controller connected with the artificial intelligence sensor and controlling an amount of electric power supply to the heating element according to the road conditions and the surrounding conditions when receiving a system actuating order from the central computer.

Description

THE CONSTRUCTION METHOD OF NO FREEZING SYSTEM FOR ROAD

BACKGROUND OF THE INVENTION

1. Field of the Invention The present invention relates to a road anti-icing system and its construction method. More particularly, the present invention relates to a road anti-icing system and its construction method, which can melt piled snow, prevent freezing of a road surface and prevent the crack in the road made by the thermal variation of the road to reduce a financial loss, to endure the load of vehicles by inserting heating elements into the road using electric hot wires to improve durability of the road, and heat the cultural soil of hot- floored rooms or vinyl houses.

2. Description of the Related Art

Road anti-icing facilities are to solve problems caused by the freezing of the road, to reduce a financial loss in management and maintenance and to reduce loss of lives and loss of property caused by traffic accidents.

Korean Patent Publication No. 95-13925 discloses a method for preventing freezing of road using geothermal power. The method for preventing the freezing of the road using geothermal power comprises a heat absorbing step of heating a heat exchange medium using geothermal power by burying the heat exchange medium under the ground, a heat exchanging step, a transmitting step of transmitting geothermal power absorbed in the heat exchange medium to the vicinity of the ground and a radiating step of radiating geothermal power transmitted to the vicinity of the ground.

Korean Patent Publication No. 92-6166 discloses a technique of a detection circuit i of freezing and snow. The detection circuit senses road conditions and melts the freezing of the road and snow piled on the road by heating using constant-temperature wires and a heater.

However, the prior arts have several problems that the boiler steam type or the hot- wire type, which has been installed and operated in some runways, require lots of installation and maintenance costs. That is, the prior arts consume lots of electric power, are installed only in newly-established roads, are not easy in replacement, and cannot endure the load of vehicles for a long time since the connection between the substrate and the surface layer of the road is not stable.

SUMMARY OF THE INVENTION It is. therefore, an object of the present invention to provide a road anti-icing system and its construction method, which can transmit heat generated from hot-wires inserted in heating elements to the heating elements, transmit heat from the heating elements to the road, in which a cover of the heating elements is made of copper alloy to improve the heat conductivity and prevent abrasion of the heating elements by the load of vehicles, and which can be installed in an uphill and a downhill of the road frozen in winter, an elevated road, overpass stairs, apartment stairs, a hot-floored room and the cultural soil of vinyl houses to culture special crops rapidly. To achieve the above object, the present invention provides a device and a method improving a bottom heating device disclosed in Korean Utility Model Application No. 99- 123957 invented by the same inventor as the present invention. In the road anti-icing

system and its construction method according to the present invention, an artificial intelligence sensor having a humidity sensor and a temperature sensor within transmits the frozen state of the road surface to a central computer, and the central computer grasps the road condition and gives a power supply order to a central voltage controller, so that the voltage controller supplies proper voltage to the hot wires to heat the frozen road surface and to prevent the freezing of the road. The hot wire is to receive electric power from the central voltage controller and supply heat to the heating elements and has a covering heatproofed and waterproofed. The hot wire can be used semipermanently and has the thickness being 2.5mm.

T and R lines of the hot wires circulate a prescribed electric power.

The heating element is generally divided into an external heating elements and internal heating elements. The internal heating elements are used when the road is initially pa\ed. That is. when the road is paved, before the internal heating element is constructed under the surface layer, to prevent the phenomenon that the temperature falls down, insulating materials are put under the bottom and the internal heating elements are arranged. After that, the surface layer of the road is well ordered. After finishing the construction of the heating elements, if there are disconnection or trouble, the external heating elements cut to 5mm are stuck into the surface layer of the road to use by connecting only electric wires, and thereby the heating elements are not exposed outside.

The external heating element is manufactured to endure shock from the outside and is an important device to radiate heat to prevent the freezing of the bottom. To prevent sliding in case that the external heating elements are stood horizontally. the external heating elements have holes having a prescribed pattern to make the drain of

the road easy. In case that the external heating elements are laid vertically, the external heating elements are divided into the upper part and the lower part, so that only the upper part of the external heating elements can be replaced with another one if they are damaged by shock.

To solve the problems that the heating elements are exposed or projected to the road surface, or the road surface is abraded more rapidly caused by the different properties between the heating elements and the road surface, and thereby the driving feeling is lowered, after the heating elements are implanted in the road surface, the upper portions of the heating elements are surface-treated with a powered adhesive, so that the driving feeling becomes good. Moreover, even though the heating elements are projected to the road surface, the adhesive treatment prevents the breakaway of the heating elements and the crack of the road, absorbs the shock caused by the load of the vehicles and prevents water from permeating the road. Furthermore, to improve the heat conductivity using an accessory radiating heat to prevent the freezing of the road surface, the copper alloy is adopted, thereby enduring the load of the vehicles and using semipermanently.

The covering of the heating element is waterproofed and heatproofed to supply heat to the internal and external heating elements, and each heating element capable of using semipermanently includes a hot wire of the thickness of 2.5mm, a semiconductor core arranged on the hot wire, a fluorine polymer jacket, a copper foil and an outer cover.

The artificial intelligence sensor serves to grasp the conditions of the road surface and the surroundings and transmit it to the central computer, and is one of important devices for driving the road anti-icing system. The artificial intelligence sensor has a temperature sensor, a humidity sensor and a device for sensing the conditions of the heating elements and the road.

The central voltage controller serves to control the power supply of the heating elements according to the conditions of the road and the surroundings when receiving a system actuating order from the central computer. The central voltage controller includes a power supply unit, a controller, an electromagnetic wave absorber and a communication modem, and is connected with the central computer. The electromagnetic wave absorber absorbs all electromagnetic wave generated from the electric devices and converts and supplies into new electric current. If the road is abraded and transformed as a lot of vehicles pass on the road and time passes by. the system of the present invention is also transformed, and if the shock is applied to the system of the present invention, the system enters into the road and thereby the system is not damaged and can be used semipermanently. If water permeates, the heating element radiates heat to discharge vapor outside. The conventional systems use only voltage of 315V and thereby electricity is wasted, but the present invention uses voltage of not only 1 10V but also 220V

BRIEF DESCRIPTION OF THE DRAWINGS

Further objects and advantages of the invention can be more fully understood from the following detailed description taken in conjunction with the accompanying drawings in which:

Fig. 1 is a view showing a state of a road anti-icing system according to the present invention:

Fig. 2 is a detailed view of an external heating element of the road anti-icing system:

Fig. 3 is a view showing a state that a damaged external heating element is replaced with a new one:

Fig. 4 is a detailed view of an internal heating element of the road anti-icing svstem: Fig. 5 is a view showing a state that a damaged internal heating element is replaced with a new one;

Fig. 6 is a view of the heating element and a connection rod of the road anti-icing system according to the present invention, wherein Fig. 6a is a side view of the heating element and Fig. 6b is a perspective view of the heating element:

Fig. 7 is an enlarged view of a hot wire of the road anti-icing system according to the present invention:

Fig. 8 is a circuit view of the road anti-icing system according to the present invention, wherein Fig. 8c is a view showing a connected state and Fig. 8d is a detailed circuit view:

Fig. 9 is a detailed view of a central voltage controller of the present invention; Fig. 10 is a detailed view showing the operation of a magnetic field according to the present invention:

Fig. 11 is a detailed view of an electromagnetic absorber according to the present invention:

Figs. 12a to 12c are views of the internal heating element of the road anti-icing system according to the present invention when being laid vertically; and

Figs. 13a to 13d are views of modified internal heating elements of the road anti- icing system according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Reference will now be made in detail to the preferred embodiments of the present

invention, examples of which are illustrated in the accompanying drawings.

A method for installing a road anti-icing system according to the present invention will be described hereinafter.

Embodiment 1 (When the road anti-icing system is installed in the existing road) As shown in Fig. 3. after external heating elements 11 are arranged at proper intervals depending on the surrounding conditions. The road surface is excavated in the depth of 15mm and the thickness of 5mm and the external heating elements having hot wires 1 within is treated with a powered adhesive at the upper surface and implanted in the excavated road to form an adhesive layer 2 on the surface layer (1) of the road surface, such that the driving feeling is raised. Moreover, even though the heating elements are projected to the surface layer (a) of the road surface, the adhesive treatment prevents the breakaway of the heating elements and the crack of the road, absorbs the shock caused by the load of the vehicles, prevents water from permeating the road. After the external heating elements 1 1 each of which has the adhesive layer 2 are implanted under the road to make the external heating elements be in the same level as the road surface and the heating element implantation working is finished by using a small roller, wires 6 and 7 connected to the hot wires 1 of the heating elements and the artificial intelligence sensor 9 are connected. After that, if a central voltage controller 10 and the artificial intelligence sensor 9 are connected, the installation is finished. After that, the central voltage controller 10 is set at a proper temperature. It is determined whether or not the external heating elements 11 are projected outward from the bottom of the road, the hot wires 1 are disconnected, the artificial intelligence sensor 9 is operated normally and manually.

Embodiment 2 (When installed in a new road) When the road anti-icing system according to the present invention is installed in a new road, before the road is paved, insulation materials are arranged under the surface layer (a) and internal heating elements 12 are arranged on the insulation materials. After that, if an insulation layer (central layer) (b) is well ordered, the installation of the internal heating elements 12 is finished. After the installation of the internal heating elements 12, if there are any disconnection or damage, the disconnected or damaged internal heating element 12 is abandoned and the external heating element 11 in lieu of the damaged internal heating element 12 is simply implanted deeply in the surface layer of the width of 5mm and connected to an electric wire. The installation of the external elements is identical with the method for installing in the existing road.

The intervals between the hot wires 1 inserted into the heating elements can be adjusted according to the conditions of the bottom of the road. The thickness of the hot wire 1 is 1.23mm and the hot wire can be used semipermanently. The control method by a computer can be performed at need and the electric power supply to the hot wires can be performed manually.

Experiment 1

According to data from the Institute of Manufacturing Research (the receipt No. Kwangju 9447 of the result of test of the Korea Institute of Manufacturing research, dated

October 6. 1999). it was found through the road loaded test that, in the same conditions. the road in which the road anti-icing system was installed could endure more about 85kgt than the road in which the road anti-icing system was not installed.

It is shown in the following table in more detail.

As shown in the table, the road in which the heating elements preventing the freeze of the road surface were installed in the road was more secure.

As you can see from the test certificate of the Korea Institute of Construction Materials (see the construction material test certificate issued on October 1, 1999). it was found that the safety of about 700kg was best. Therefore, the heating elements, when the sample, in which the heating elements being important components of the road anti-icing system in transmitting heat are installed, was tested, there appeared the safety of 670kg or more. Therefore, it will be appreciated that there is no problem when the road anti-icing system according to the present invention is installed in the road. Moreover, it will be appreciated that the road anti-icing system will contribute to prevent the damage of the road when the road is frozen by a snowfall in winter or is free from ice in spring, because the road anti-icing system prevents the freeze of the road.

Experiment 2

By treating the lower portion of the heating elements with a special adhesive, the breakaway of the heating elements and the crack of the road were prevented, the shock by the load of the vehicles was absorbed and water was not permeated.

When the heating elements were implanted in the road surface and finished with

the special adhesive, it could be prevented that the water permeated between the heating elements, and there was no breakaway of the heating elements since the heating elements were adhered from the lower portion to the upper surface.

- Test Result -

Compared with a heating manner of the conventional hot-wire method that heats only the surroundings of the hot wires, the heating elements preventing the freezing according to the present invention adopts a heat transmission manner. It was demonstrated through the certificate of test that the heating elements can simply melt ice of thickness of 10mm. length of 480mm and width of 780mm at 5 degrees below zero or less for thirteen hours and ten minutes by the heat transmission manner. The technique has never been developed all over the world till now and will be contribute to raise the

international competitiveness. Experiment 3

The road anti-icing system and its construction method (see specifications of a snow melting system) are that the heating elements of 5mm are implanted after the road is excavated with the width of 5mm according to the characteristics of the road surface. In the road anti-icing system, the hot wires implanted in the heating elements (see the test certificate issue No. 99-2889 issued by the Small & Medium Business Administrations in Kwangju and Chullanam-do on October 22, 1999) has the thickness of 0.101mm to reduce the electric power consumption, and thereby the consumed electric power was 49.5 W numerically (see the test certificate issue No. 99-1965 issued by the Korea Electric Testing Institute on September 3, 1999). Furthermore, by assembling various devices to reduce the electric charges to the maximum, the consumed electric power was reduced to 2.30W. Through the experiment, it was determined that the temperature of the heating element of 25 degrees could prevent the freezing of the road surface, and thereby it was good that the temperature of the heating element was 25 degrees.

Experiment 4

To provide reasonable grounds of the installation of the road anti-icing system, in the test certificate issue No. 99-2889 issued by the Small & Medium Business Administration, the optimum interval between the heating elements is presented. Since the optimum interval between the heating elements could be adjusted according to the road conditions and the geographical features, it could not be set exclusively, however, it is preferable that the optimum interval is 1200 ~ 1500mm. Therefore, it had no problem that the interval between the heating elements is generally 600mm. which is 1/2 of 1200mm. to prevent the freezing.

Experiment 5

Since heat generated from the heating elements was insulated through the road surface besides inclined area when the installation was performed, but the On/Off operation of the heating elements was automatically determined according to the installed area, as presented in the test certificate issue No. 99-2889 issued by the Small & Medium Business Administration, the heating elements were not restricted by the insulation and the road condition could be grasped over a wide area with one main computer. Furthermore. the central voltage controller supplied electric power of a prescribed temperature. Since the heat conductivity of ASCON (Asphalt Concrete) surface layer was more excellent than the general concrete, there was no problem in the heat conductivity of ASCON.

Hereinafter, referring to the drawings, the device will be described in more detail. Fig. 1 is a view showing a state of a road anti-icing system according to the present invention. Fig. 2 is a detailed view of an external heating element of the road anti-icing system. Fig. 3 is a view showing a state that a damaged external heating element is replaced with a new one. Fig. 4 is a detailed view of an internal heating element of the road anti-icing system. Fig. 5 is a view showing a state that a damaged internal heating element is replaced with a new one. Fig. 6 is a view of the heating element and a connection rod of the road anti-icing system according to the present invention, wherein Fig. 6a is a side view of the heating element and Fig. 6b is a perspective view of the heating element. Fig. 7 is an enlarged view of a hot wire of the road anti-icing system according to the present invention. Fig. 8 is a circuit view of the road anti-icing system according to the present invention, wherein Fig. 8c is a view showing a connected state and Fig. 8d is a detailed circuit view. Fig. 9 is a detailed view of a central voltage controller of the present invention. Fig. 10 is a detailed view showing the operation of a magnetic field according to the present invention. Fig. 11 is a detailed view of an electromagnetic wave absorber according to the present invention. Figs. 12a to 12c are views of the internal heating element of the road anti-icing system according to the present invention when being laid vertically. Figs. 13a to 13d are views of modified internal heating elements of the road anti-icing system according to the present invention. In the drawings, the reference numeral 1 indicates the hot wire, 2 indicates a semiconductor core. 3 indicates a fluorine polymer jacket. 4 indicates a copper foil. 5 indicates an external cover. 6 and 7 indicate connection wires, 9 indicates an artificial intelligence sensor, 10 indicates a central voltage controller, 1 1 indicates an external heating element, 12 and 12' indicate internal heating element, 13 indicates a panel. 14 indicates a connection rod, 15 indicates a switch. 16 and 16' indicate hot wire holes, 17 indicates a connection rod hole. 21 indicates a power supply unit. 22 indicates a controller, 23 indicates a communication modem. 24 indicates an electromagnetic wave absorber. 31 indicates an electromagnetic sensor. 32 indicates a connection pin, 33 indicates a spark level, 34 indicates a spark power source. 35 indicates an artificial diamond, 36 indicates an air inlet hatch, 37 indicates an air heat pipeline, 38 indicates a coil, 39 indicates a magnet, 40 indicates a power converter. 41 indicates a power generator, 42 indicates a heat collector, 43 indicates a heat sensor. 44 indicates another power generator. 45 indicates a T-wire. 46 indicates a R-wire. 47 indicates a DC-wire. 51 and 51 ^' indicate bolts. 52 indicates a bolt insertion hole. 53 indicates an upper portion of the external heating element. 54 indicates a lower portion of the external heating element. 55 and 55^' indicate internal heating elements and 56 indicates an insulation material. As shown in Fig. 8, according to the present invention, the artificial intelligence sensor 9 having the humidity sensor and the temperature sensor within transmits the frozen state of the road surface to the central computer. The central computer grasps the road condition and gives a power supply order to the voltage controller of the central voltage controller 10. so that the voltage controller supplies a proper voltage to the hot wire to heat the frozen road surface. As shown in Figs. 4 and 6, two hot wires 1 mounted in the internal and external heating elements receive electric power from the voltage controller and supply heat to the heating elements. The covering of each hot wire is waterproofed, and thereby the hot wire can be used semipermanently. As shown in Fig. 7. the heating element includes the hot wire of thickness of 2.5mm, the semiconductor core 2, the fluorine polymer jacket 3. the copper foil 4 and the external cover 5.

As shown in Figs. 2 and 3. the external heating element 11 can be installed without regard to the distance between the traffic lanes. The method for connecting the lanes is as follows. The connection rod 14 of the diameter of 3mm and the length of 40mm is inserted into the connection hole 17 of the external heating element 11. The connection rod 14 is made of a special synthetic resin, which is the same material as the external heating element 11. The external heating element can be installed partially or replaced with another one when the lane expansion construction or the repair work are performed. A fixing pin 20 is provided at the lower portion 24 of the external heating element 11 , thereby the heating element 11 can be fixed in the road surface. As an accessory to radiate heat to prevent the freezing of the road surface, the copper alloy is adopted to improve the heat conductivity and to endure the load of the vehicles.

Fig. 8 is a circuit view of the road anti-icing system according to the present invention. The central voltage controller 10 connected to the artificial intelligence sensor 9 has an end connected with the switches 15 and 15 '(generally, overload circuit breaker) and the other end connected to the artificial intelligence sensor 9.

The heat generated from the hot wires 1 connected to the internal and external heating elements reaches a prescribed temperature in the first external heating element 11 and transmitted to the next heating elements 11 and 12. If twenty or more heating elements are connected in rows, there is a difference between the temperature of the first heating element and that of the final heating element. As already reaching the prescribed temperature before the final heating element reaches the prescribed temperature, the first heating element is overloaded. Therefore, to prevent electric power consumption, if the prescribed temperature is transmitted to the switches 15 and 15', the switches 15 and 15' are automaticalh off.

The temperature sensor of the artificial intelligence sensor 9 is switched off if the temperature is 0 degree or more even though snow lies deep. Moreover, if little humidity is shown even though the temperature is 0 degree or less, the sensor is switched off to save the electric power.

To operate the system according to the present invention, a main power source is switched on, a digital V-meta and a power are lighted. If a SSI (operating power source S/W) is turned on and a switch of a SS2 (manual operation, automatic operation) is automated, digit is shown on a digital TC (Temperature Controller) and a HCT (Humidity Control Timer). If they are automated, a M/C (electromagnetic contactor) is operated by the TC and the HTC.

When the M/C (electromagnetic contactor) is operated, electricity is supplied to

the hot wires and heat is generated.

The TC (Temperature Controller) has a two-stage control function. The M/C (electromagnetic contactor) is operated according to the condition sensed by the temperature and humidity sensors. As an initial condition, when the first-stage set temperature (e.g., 0 degree) and the set humidity (e.g., 85%) are all satisfied, the timer is operated. When the timer is operated, the M/C (electromagnetic contactor) is operated to supply heat to the hot wires 1 before the second-stage set temperature (e.g.. 20 degrees) is sensed. When the TC2.H is operated, the timer is turned off and the power supply to the hot wires is broken to reset the timer.

To perform repeated operation, the initial condition must be always satisfied, but the hot wires can generate heat by a manual manipulation.

The central voltage controller covers the range of about lOKm in the length of the hot wire.

To prevent the disorder of the panel (disconnection and overvoltage) and accidents caused by the load. XO and CR are inserted. In Fig. 8d. the numerals 1 to 7 indicate the number of the connected internal and external heating elements.

In Fig. 9. the power supply unit 21 supplies electric power to all systems. The controller 22 controls all systems automatically. The central computer regulates all systems. The electromagnetic wave absorber 24 absorbs electromagnetic wave generated from the electric devices and supplies new electric current.

Fig. 10 shows the characteristic of the magnetic field. The heating elements radiate heat magnetic field at 1.5mm intervals laterally to simply melt snow or ice in winter. The electric power is circulated in the T and R wires connected to the hot wires, and a two-strand DC wire has one line directly connected to the heating element and the other line exposed outward from the central controller, such that magnetic field is formed at both sides of the heating element to melt snow or ice of the road. At this time, when DC electric source is supplied circulating the T wire 45 and the R wire 46. a small amount of electricity can melt the freeze using heat generated from the magnetic field. Fig. 1 1 shows a structure of the electromagnetic wave absorber 24. The electromagnetic wave sensor 31 located at the central upper portion is connected with the spark level 33 generating spark by the connection pin 32. Under the spark level 33. the spark electric source 34 generating spark and the artificial diamond 35 to make the electromagnetic wave generate spark and light. The air inlet hatch 36 is formed at the upper portion of an air path pipe in the right side of the absorber and the air heat pipeline 37 extending the air path pipe is arranged at the central lower portion. If the artificial diamond 35 emits light, the internal air is heated at a high temperature, and generates electricity by the generated gas and the expanded internal pressure. That is. the magnet 39. which encloses the coil 38 at the left side of the absorber, instantaneously stimulates the coil 38 by a high pressure, and thereby the coil 38 rotates inside the magnet 39 in a rapid speed to generate electricity. Furthermore, the air flown into the inside is also rotated in a rapid speed to generate electricity.

The generated electricity is produced by the power converter 40 mounted at the central lower portion and the power generator 41 mounted at the lower portion of the power converter 40. The heat generated from the inside is sensed by the heat sensor 43 and collected by the heat collector 42. When the electricity is produced, the electricity is supplied to the power supply unit 44, and the electricity is supplied to the outside through the T w ire 45 and the R wire 46 connected to the lower portion of the electromagnetic wa\ e absorber 24. The electromagnetic wave absorber is a device for converting electromagnetic wave into electricity.

As shown in Figs 1 to 3, in case that the heating elements are stood laterally, a hole

18 is formed in the external heating elements 11 to discharge water rapidly when water gathered in the road in the rainy season. As shown in Fig. 12, in case that the heating elements are laid vertically, the external heating elements are divided into the upper part

53 and the lower part 54. The upper part 53 of the heating element is exposed to the road surface and has a projection 19 having a prescribed pattern formed on the surface to prevent the sliding. Moreover, the upper part 53 is made of a special material to be used semipermanently. If the heating element is damaged by the shock, only the upper part 53 of the external heating element can be simply replaced with another one. The lower part

54 of the external heating element 11 has the fixing pin 20 to fix the upper part 53 on the road surface. As an accessory to radiate heat to prevent the freezing of the road surface, copper alloy is adopted to endure the load of the vehicles. As shown in Fig. 13, the external heating element 11 can be transformed according to the conditions of the road. To install, the external heating elements 11 are arranged at proper intervals according to the surroundings and the bottom of the road is excavated in the depth of 30mm and the thickness of 5mm in such a manner that the external heating elements 11 are projected to about 10 ~ 20mm. The heating elements having the hot wires 1 are inserted into the excavated bottom and the heating element insertion working is finished by treating the heating elements and the road surface using a small roller in such a manner that the external heating elements and the road surface are in the same level. After that, the hot wires 1 of the heating elements are connected to the wires 6 and 7 connected to the sensor 9 and the central voltage controller 10 and the artificial intelligence sensor 9 are connected. After that, the central voltage controller 10 is set at a proper temperature. It is checked whether or not the external heating elements 11 are projected properly from the bottom, the hot wires 1 are disconnected and the artificial intelligence sensor 9 is operated normally and manually or automatically.

Table

* Extracted from the test certificate Nos. 1567, 1527, 1667 and 9293 issued by the Small & Medium Business Administration on June 24. 1999.

The road anti-icing system according to the present invention is installed in the road in a cold area, as shown in Fig. 1, to prevent the freeze of the road surface. Furthermore, the external heating elements 11 are projected at 1mm intervals in the road to serve as non-skid jaws, thereby preventing traffic accidents due to a driver's doze driving. The road anti-icing system can be installed not only in the road but also stairs of an overpass, stair of an apartment, entrances of an underground passage to prevent sliding by the freezing.

As previously described, the road anti-icing system according to the present

invention can prevent the freezing of the road in winter, be easily constructed in the existing road and installed without regard to the surroundings of the road. Additionally. the road anti-icing system can be installed not only in the road but also in the stairs.

Moreover, in case of the lane broadening construction or repairing construction, the heating elements can be replaced partially, and thereby the repair and maintenance is easy. The chemicals presently used in the snow-removing work has a great influence on the environmental pollution, but the road anti-icing system and method protect the environment and deal effectively with very heavy snowfall and unexpected circumstances. By installing in the bottom of a storehouse and a living room, hot-floored room effect can be obtained. Especially, if the system is installed in cultural soil of a vinyl house, crops grow up very quickly. Moreover, the system according to the present invention has reduced power consumption and cost, thereby saving manpower and equipment.

Having now described a few embodiments, it should be apparent to those skilled in the art that the foregoing is merely illustrative and not limiting, having been presented by way of example only. Numerous modifications and other embodiments are within the scope of one of ordinary skill in the art and are contemplated as falling within the scope of the invention.

Claims

WHAT IS CLAIMED IS:

1. A road anti-icing system, which includes: internal and external heating elements having hot wires within; an artificial intelligence sensor connected to the internal and external heating elements through the hot wires, the artificial intelligence sensor sensing the surroundings of the road and transmitting to a central computer; and a central voltage controller for automatically controlling the hot wires according to an order of the central computer. wherein voltage of the hot wire is 110V and 220V, the hot wire supplies heat and has a covering including a semiconductor core, a fluorine polymer jacket, a copper foil 4 and an external cover 5. the internal heating element has a hot wire hole and a connection rod hole and the external heating element has the width of 5mm, the length of 1 ~ 2mm and the height of 15mm. and a connection rod is inserted into the connection rod hole of the internal heating element to connect the internal heating element and the external heating element, the connection rod being made of the same material as the external heating element or made of a special synthetic resin, the connection rod having the hot wires within.

2. The system as claimed in claim 1, wherein the artificial intelligence sensor is connected to the external heating element, senses the surrounding conditions of the road to transmit to the central computer and has a temperature sensor and a humidity sensor, wherein the central voltage controller is connected to the artificial intelligence sensor and receives a system actuating order from the central computer, and wherein the central computer is connected to the artificial intelligence sensor and the central voltage controller to control all devices according to the surrounding conditions.

3. The system as claimed in claim 1, wherein the central voltage controller includes a power supply unit for supplying electric power to all the devices, a controller for automatically controlling all the devices, a communication modem and an electromagnetic wave absorber absorbing electromagnetic wave and generating electricity.

4. The system as claimed in claim 3, wherein the electromagnetic wave absorber for converting electromagnetic wave into electricity to supply electricity to the outside includes: an electromagnetic wave sensor located at the central upper portion; a spark level for generating spark through a connection pin, the spark level being connected to the electromagnetic wave sensor; a spark electric source for generating spark an artificial diamond for making the absorbed electromagnetic wave generate spark and light, wherein the spark electric source and the artificial diamond are mounted at the lower portion of the spark level; an air inlet hatch formed in the upper portion of an air path pipe and in the right side of the absorber: an air heat pipeline extending the air path pipe at the central lower portion of the absorber; a coil located at the left side of the absorber: a magnet enclosing the coil, wherein if the artificial diamond emits light, the

internal air is heated at a high temperature and generates electricity by generated gas and expanded internal pressure, i.e., the coil is stimulated by an instantaneously high pressure and rotated in a rapid speed within the magnet, and thereby electricity is generated and air entered from the outside is also rotated to generate electricity; a power converter located at the central lower portion and a power generator located at the lower portion of the power converter, the power converter and the power generator producing electricity inside the electromagnetic wave absorber; a heat sensor sensing heat generated inside the absorber; a heat collector for collecting the generated heat; and a power supply unit for supplying the generated electricity through a T wire and a R wire connected to the lower portion of the electromagnetic wave absorber to the outside.

5. The system as claimed in claim 1, wherein the external heating element has a hole for discharging water rapidly when water is gathered through a water conduit in a rainy season, the external heating element is divided into an upper part and a lower part. the upper part of the heating element is exposed to the road surface to prevent sliding of vehicles and has a projection having a prescribed pattern on the surface to prevent sliding of the vehicles and to endure the external shock, and if the heating element is damaged by shock, only the upper part of the heating element is replaced with another one, a copper alloy is adopted as an accessory for radiating heat to improve heat conductivity and to endure the load of the vehicles.

6. A method for constructing a road anti-icing system, the method comprising the steps of: laying insulation material under a surface layer according to the surrounding conditions and arranging internal heating elements having hot wires within; well arranging an insulation material layer (central layer) and arranging the external heating elements at proper intervals; forming an adhesive layer on the surface of the upper port of the external heating elements, in which the hot wires of the depth of 15mm and the thickness of 5mm are mounted in the surface layer bottom, with a powered adhesive; inserting the external heating elements having the adhesive layer and finishing the heating element insertion working using a small roller in such a manner that the external heating elements are in the same level as the road surface; connecting the hot wires of the internal and external heating elements to wires of an artificial intelligence sensor and connecting a central voltage controller and the artificial intelligence sensor; and setting the central voltage controller at a proper temperature.

7. A method for constructing a road anti-icing system in the existing road, the method comprising: excavating the surface layer of the road in the depth of 15mm, the width of 5mm and the length of about 1 ~ 2m; forming adhesive layer on the surface of the upper portion of external heating elements, in which hot wires are mounted, with a powered adhesive and implanting the external elements having the adhesive layer in the surface layer;

finishing the heating element implanting working using a small roller in such a manner that the external heating elements are in the same level as the road surface: connecting the hot wires of the external heating elements and wires of an artificial intelligence sensor and connecting a central voltage controller and the artificial intelligence sensor: and setting the central voltage controller at a proper temperature.

8. The method as claimed in claims 6 or 7, wherein the heating elements circulates electric power through a T wire and a R wire connected to the hot wires and has a two-strand DC wire having one line directly connected to the heating element and another line exposed outward from the central controller, and thereby magnetic fields are generated at both sides of the heating elements at regular intervals to melt snow or ice at both directions of the road.

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