KR19990073613A - Repeater using Solar Cell - Google Patents

Abstract

Two-way communication repeater, solar cell that collects sunlight and converts it into electrical energy, and charges the electric power produced by the solar cell to the battery and senses the state of the battery to supply certain power to the system even in case of abnormal power supply. According to the solar position data detected by the solar position detection means and the solar position detection means for detecting the position of the sun, the charging supply means, a plurality of solar sensors are installed in the horizontal and longitudinal of the hemisphere Rotating means for rotating the solar cell in a vertical direction with respect to the sunlight to collect the dust, and the current position of the sun according to the solar sensing data output from the solar position detection means to determine the current solar cell drive control signal corresponding to the rotation means System controller that outputs the data to the By installing and operating a repeater using solar cells in an area where it is difficult to supply, it not only improves the call quality of mobile phones, but also reduces installation costs due to simple facility construction and minimum facility investment, as well as solar tracking devices. The present invention relates to a relay apparatus using a solar cell capable of accumulating the maximum energy at every moment by rotating the solar panel in a vertical direction with respect to the solar ray by tracking the movement position of the sun.

Description

Relay device using solar cell {Repeater using Solar Cell}

The present invention relates to a wireless communication relay system, and in particular, by implementing a power supply means of the repeater solar cell and the maximum energy at every moment through the solar automatic tracking device that tracks the position of the sun according to the movement of the sun. The present invention relates to a relay apparatus using a solar cell for driving a communication relay system with the energy.

Recent developments in information and communication technology, changes in life styles, and economic growth are changing the form of communication culture rapidly.In the information age, the demand for high-speed information delivery is not limited to time and place. Mobile communication services, which can provide quality communication services economically even in an office, outdoor or general public environment, have become an indispensable communication medium in daily life.

Unlike the wide area method using the service area as one large area, such a mobile communication system divides the entire service area into a small service area called a cell, and allocates a certain number of radio channels available within each cell. Will be allocated.

In addition, wireless base stations (Cell Sites) installed in each cell are centrally controlled in a switching system, and as the demand for mobile communication increases rapidly, the cellular system increases the number of subscribers in a limited frequency band to accommodate more subscribers. In order to expand the service area to all regions, more and more wireless base stations and repeaters have been installed to increase the number of cells.

1 is a schematic block diagram of a general wireless communication repeater, and receives and receives a voice signal transmitted from a wireless base station (or wireless terminal) and transmits and receives a plurality of transmission and reception antennas 11-1 and 11- to a wireless terminal (or wireless base station). 2) and a plurality of transceivers 12-1 and 12-2 for receiving a voice signal from a transceiver antenna and transmitting the antenna signal to a transceiver antenna and filtering and amplifying the voice signal in both directions, and the transceivers 12-1 and 12; Low noise amplifiers 13-1 and 13-2 for reducing noise generated in the voice signal outputted through -2) and signals output through the low noise amplifiers 13-1 and 13-2 of the desired frequency band. Filters 14-1 and 14-2 for passing only the audio signal, and drive amplifiers 15-Amplifying the voice signals output through the filters 14-1 and 14-2 to a predetermined level and then outputting them to the handset converter. 1, 15-2).

Of course, in order to operate the repeater 10 requires a driving power source and the power supply device 18 for supplying power to the repeater 10 from a power source installed in a specific place outside using a predetermined power cable 19 After receiving the power received and converted to a predetermined driving voltage and supplied to the repeater 10, the repeater 10 is driven.

The repeater 10 configured as described above is installed in a public building or a basement and a mountain area where radio wave reception is weak, and amplifies and transmits radio waves to an area where radio wave reception is weak, thereby providing a high quality wireless communication service. ) And the communication of the wireless terminal 5 can be more faithfully extended to expand the scope of the mobile communication service.

However, in the case of installing a repeater in an outlying area or a mountain area outside the city center to expand the service and call area, it is not difficult to install the repeater 10, but it is difficult to draw and install the power to drive the repeater 10. It was not easy.

Because there is no power in the place where the repeater 10 is to be installed in the outlying region such as a mountainous region, it is difficult to draw the power from the other power source through the rough path of the remote power source using the power cable 19 to supply the repeater 10. It was a difficult task, the cost and installation time of the power cable 19 takes a lot of problems also occur.

Therefore, when it is difficult to supply commercial power to an optimal place where a repeater is to be installed, communication operators often have to install repeaters in lanes or lanes, which are directly related to the quality of service, resulting in a callable service. It will cause a problem of limiting the area of.

Accordingly, an object of the present invention is to install and operate a repeater using solar cells in areas where commercial power is difficult to supply, such as mountainous regions or unmanaged areas, thereby improving call quality of mobile phones with simple facility construction and minimum facility investment costs. In addition, to provide a relay device using a solar cell that can satisfy the customer service.

In addition, another object of the present invention is to use a solar automatic tracking device that tracks the movement position of the sun, which is the energy source of the repeater, by collecting the maximum energy at every moment by rotating the solar panel in the vertical direction with respect to the sun according to the position of the sun It is to provide a relay device using a solar cell that can be.

The relay device of the present invention for achieving the above object is a two-way communication repeater for receiving, filtering, amplifying and transmitting a voice signal of a predetermined frequency band;

A solar cell which collects sunlight and converts it into electrical energy;

A capacitor accumulating the power produced by the solar cell;

Charge supply means for charging the power produced by the solar cell to the storage battery, and also detects the state of the storage battery to supply a predetermined power to the general system even in the case of abnormal power supply;

A plurality of sun detection sensors installed on the hemisphere's lateral and longitudinal sides, and a sun position detecting means for detecting a sun ray according to a position of the sun;

Rotation means for rotating the solar cell in a vertical direction with respect to the sunlight to collect the maximum amount of solar energy every moment according to the solar position data detected by the solar position detection means; And

It is characterized in that it comprises a system controller for identifying the current position of the sun according to the sun detection data output from the sun position detection means and outputs the corresponding solar cell drive control signal to the rotating means.

1 is a schematic block diagram of a general wireless communication repeater,

2 is an installation example showing a relay device using a solar cell according to the present invention,

3 is a view showing a detailed configuration of the solar position sensor of FIG.

4 is a block diagram showing a relay apparatus using a solar cell according to an embodiment of the present invention,

5 is a flowchart illustrating an operation process of FIG. 4.

Explanation of symbols on the main parts of the drawings

1: wireless base station 5: wireless terminal

10: repeater 20: solar cell

30: charging supply means (Charger) 40: storage battery

50: solar position detection means (CdS cell) 60: rotation means (Rotator)

70: system controller 80: power conversion means (DC / AC Converter)

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

2 is an installation example showing a relay apparatus using a solar cell according to the present invention, a repeater 10 including an antenna, a solar panel 20, a charger 30, a storage battery 40, a solar position sensor 50, The rotor 60 and the system controller 70 are provided.

FIG. 4 is only an installation example in which all of the relay devices are mounted on one pole 90, and the present invention is not limited thereto, and the relay device may be installed in various forms.

The repeater 10 including the antennas 11-1 and 11-2 has a configuration similar to that of FIG. 1, and a detailed description thereof will be omitted, and the repeater 10 may be divided into two types according to a signal processing method. One is RF (Radio Frequency) direct method and the other is IF (Intermediate Frequency) conversion method.

The RF method extracts signals of a desired frequency band using only a filter's inherent filtering band without providing a local signal, and the IF (Intermediate Frequency) method converts an RF signal into an IF signal using a local oscillation signal and then performs a filtering process. By performing the method, the IF method has superior noise removal and amplification characteristics than the RF method, but there are advantages and disadvantages in that the size of the relay equipment is increased and the cost is increased. FIG. 1 illustrates the RF method, and the present invention is not limited to any of the methods. Can be applied without

As shown in the drawing, reference numeral 11-1 is a donor-type first antenna that is responsible for data transmission between the wireless base station 1 and the repeater 10, and reference numeral 11-2 has directivity and gain for a service area and A second antenna for service that provides a service to the terminal 5, the code 10 is filtering and amplifying a voice signal of a desired frequency band of the transmission signal of the wireless base station 1 received through the first antenna 11-1 It is a repeater for bidirectional communication configured to transmit to the wireless terminal 5 through the second antenna (11-2).

In addition, reference numeral 20 denotes a solar panel that collects sunlight and converts it into electrical energy, and reference numeral 30 denotes a battery 40 that charges the power produced by the solar panel 20 and supplies the power of the battery 40 to the overall system. The reference numeral 40 denotes a battery for accumulating electrical energy produced by the solar panel 20, and the reference numeral 50 denotes a hemispherical shape and an illumination sensor in a horizontal and longitudinal direction at a predetermined interval (hereinafter referred to as a 'CdS cell'). Is a solar position sensor that detects the movement of the sun and outputs the corresponding information, and symbol 60 is a rotor that rotates the solar cell up, down, left, and right to collect the maximum amount of solar energy every moment. .

In addition, reference numeral 70 denotes a system for determining the current position of the sun according to various sun position detection signals output from the sun position sensor 50 and outputting a position movement signal of the solar cell 20 corresponding thereto to the rotor 60. It's a controller.

An important characteristic of the present invention, which is installed in the form of the same drawing, is that the solar panel 20 is automatically moved up, down, left, and right according to the movement of the sun, thereby improving energy efficiency to 100%. It is easy to install and can be installed in a short period of time since there is no need of power supply faucet and transmission path.

In addition, all the equipment may be mounted on one pole 90, and if necessary, the first antenna 11-1 or the second antenna 11-2 may be separately installed and operated.

3 is a view showing a detailed configuration of the solar position sensor 50 of Figure 2, a plurality of CdS cells (Cadmium Sulfide Cell; No. 1 to No. 14) fixed in the hole and the hemisphere inside and laterally received through them It is a simple, low-failure device that uses the principle of tracking the position of the sun by comparing light intensity with each other, and compares and analyzes the position of the sun by comparing and analyzing the intensity of light output from each of the hemisphere species and each horizontally placed CdS cell. The rotor 60 is rotated to track and move the solar panel 20 to that position.

For example, the system controller 70 determines that the sun is in the 'P' position when the 'high' signal is continuously detected in the CdS cells 4 and 13 of the hemisphere 50 for a predetermined time. To the rotor 60 and the rotor 60 moves the solar panel 20 up, down, left, and right to track the sun.

4 is a block diagram showing a relay apparatus using a solar cell according to an embodiment of the present invention, the repeater 10 including the antenna (11-1, 11-2), solar cell 20, charging supply means ( 30), the battery 40, the solar position detecting means 50, the rotating means 60, the system controller 70 and the power conversion means 80 is provided.

As shown in the drawing, the repeater 10 has a donor-type first antenna 11-1, which is responsible for data transmission between the radio base station and the relay period, and directivity and gain for the service area. The second antenna 11-2 for service in charge of data transmission and the voice signal of a desired frequency band among the transmission signals of the wireless base station received through the first antenna 11-1 are filtered and amplified to provide a second antenna ( 11-2) consists of a main body for two-way communication configured to transmit to the corresponding wireless terminal through the DC 12V low-power repeater, and can be used by the variable repeater or general terrestrial repeater depending on the purpose of the area and service, but the benefit of the repeater It is most preferable to use a wave repeater of 30 dBm / FA x 2FA (7 dBi).

In addition, the solar cell 20 is configured to produce a maximum of 100W / h of power at a DC 12V per sheet (1㎡) to collect the sunlight to convert into electrical energy, the charging supply means 30 is It is configured to always supply a constant power to the system to charge the power produced by the solar cell 20 to the storage battery 40 and to detect the state of the storage battery 40 to protect the equipment in the event of overvoltage, overcurrent or low voltage. The storage battery 40 uses 12V, 250Ah of maintenance-free for accumulating the electrical energy produced by the solar cell 20, and the quantity of use can be arbitrarily determined according to the power consumption and climatic conditions of the repeater 10.

In addition, the solar position detecting means 50 is configured so that a plurality of illumination sensors (CdS Cell) is installed in the hemisphere lateral and longitudinal, so that different CdS cells to detect the sunlight and output the corresponding signal according to the position of the sun. The rotation means 60 is configured to rotate the solar cell 20 up, down, left, and right to collect the maximum amount of solar energy every moment according to the solar position data detected by the solar position detecting means 50. The system controller 70 detects the current position of the sun according to the sun detection data output from the sun position detecting means 50 and outputs the position control signal of the corresponding solar cell 20 to the rotating means 60. It is configured to.

And, the power conversion means 80 is an auxiliary device that receives the DC 12V power output from the charging supply means 30 is converted to AC 220V (200W) power to support the use of AC equipment such as measuring instruments.

In addition, the rotating means 60 is capable of rotating up and down ± 45 ° left and right ± 90 ° and when the light is completely blocked (night) moves the solar cell 20 to the designated position (east).

In order to configure and use the power supply device of the repeater 10 as described above, there should be two solar panels 20 that produce 100W of power per 1 m 2 of the solar cell 20, and the repeater 10 is 2FA (1.25MHz band including guide band) shall be used as 30dBm / FA with 40W of power consumption.

Therefore, the power consumption of the repeater 10 is 40W / h x 24 hours 960W per day and the power consumption of the rotating means 60 is 20W per 24 hours, the total daily power consumption of the relay system is 980W.

And, the production power of the solar cell 20,

100 W x 2 pieces x 10 hours = 2,000 W / d (1 day),

The capacity of the storage battery 40,

12V × 250Ah × 4 units = 12,000W / h

Looking at the available time of the repeater 10 divided into normal times and rainy weather and bad weather as follows.

◎ Normal: The solar cell generates 2,000W / d per day and 1,600W / d for 80% efficient use, which is 1.6 times the system's daily power requirement of 980W / d. You can charge the battery while still supplying power,

◎ In rainy conditions, the power generated by solar cells is reduced to 800W / d and 640W / d when applied at 80% efficiency, which is 0.6 times of the system's daily power requirement of 980W / d, saving 340W / d from the battery. Supplement it and feed it to the system,

◎ In case of bad weather: If the solar cell cannot supply power at night or in the worst rain (50㎜ / h), use the power charged in the battery, and if the power to charge the battery is 12,000W 12,000W × 0.9 (efficiency) ÷ 980W (1 day) ≒ 11 days comes out.

Therefore, if power is stored in the storage battery 40, the relay system can be continuously operated for 10 days or more even in the worst climate, and the operation time of the repeater 10 when the capacity of the repeater 10 or the solar power is cut off. By designing by changing the size of the solar cell 20 or the number of the storage battery 40 according to it can be maintained for more time even in the worst climate.

In addition, if the solar tracking power supply device 20 to 70 is used with a windmill generator (currently producing 400 W / h of power), the system can be operated even in case of long-term rain or failure of the automatic tracking device 50 or 60. Not only can be operated stably, but also the capacity of the storage battery 40 can be reduced.

Looking at the operation of the preferred embodiment of the present invention configured as described above with reference to the flow chart of FIG.

First, in a state in which power is supplied to the repeater 10 by using the electric energy generated by the solar cell 20 (S1), a plurality of CdS cells (Nos. 1 to 14 in FIG. 3) are in the width and length of the hemisphere. The installed solar position detection means 50 detects the sunlight emitted from the sun (S2).

Subsequently, the system controller 70 determines whether a solar light detection signal is detected in a specific cell among the plurality of CdS cells of the sun position detecting means (S3), and if there is detected sunlight, analyzes the coordinates of the CdS cell. Through the current position of the sun is determined through (S4). At this time, the system controller 70 detects dozens to hundred times per minute of the signal output from the solar position detecting means 50 and extracts the horizontal and longitudinal CdS cells that output the most 'high' signal to determine the sun position. Done.

According to the solar position information, the system controller 70 controls the rotation of the rotating means 60 to which the solar panel 20 is coupled to adjust the solar panel 20 to be perpendicular to the sunlight to maximize the energy at every moment. In order to collect dust (S5), and after a predetermined time has elapsed (S6), the process is performed again from the process of detecting the sun position (S2).

On the other hand, if the sunlight is not detected in the step (S3) of determining whether the sunlight is detected from the CdS cells of the solar position detection means 50, it is determined whether a predetermined time has elapsed (S7) even if a predetermined time has elapsed If no sunlight is detected, the system controller 70 recognizes that it is a night time zone and controls the rotation of the rotating means 60 to which the solar panel 20 is coupled so that the solar panel 20 faces the designated position, that is, eastward. Adjust (S8).

Although specific embodiments of the present invention have been described and illustrated in FIG. 2 to FIG. 4, it is obvious that the present invention may be variously modified and implemented by those skilled in the art.

For example, it is possible to install and use other equipment such as unmanned weather measurement equipment, billboards, roadside emergency telephones, or forest surveillance posts instead of repeaters in the automatic solar tracking power supply.

Such modified embodiments should not be individually understood from the technical spirit or the prospect of the present invention, and such modified embodiments should fall within the appended claims of the present invention.

Therefore, in the present invention, by installing and operating a repeater using solar cells in an area where commercial power is difficult to supply, such as a mountainous region or an unmanaged area, it improves the call quality of the mobile phone and at the same time facilitates the construction of the facility and the minimum. In addition to reducing installation costs with the facility's investment, the solar tracking device tracks the sun's movement and rotates the solar panel to be perpendicular to the sun's position according to the sun's position to collect the maximum energy at every moment. There is an effect that can reduce the capacity of the battery.

Claims (4)

A bidirectional communication repeater that receives a voice signal of a predetermined frequency band, filters, amplifies and transmits the voice signal; A solar cell which collects sunlight and converts it into electrical energy; A capacitor accumulating the power produced by the solar cell; Charge supply means for charging the power produced by the solar cell to the storage battery, and also detects the state of the storage battery to supply a predetermined power to the general system even in the case of abnormal power supply; A plurality of sun detection sensors installed on the hemisphere's lateral and longitudinal sides, and a sun position detecting means for detecting a sun ray according to a position of the sun; Rotation means for rotating the solar cell in a vertical direction with respect to the sunlight to collect the maximum amount of solar energy every moment according to the solar position data detected by the solar position detection means; And And a system controller for identifying a current position of the sun according to the sun detection data output from the sun position detecting means and outputting a solar cell driving control signal to the rotating means. The method of claim 1, And a power conversion means for receiving the DC power output from the charging supply means and converting the power to AC power. The method of claim 1, The rotating means, Relay device using a solar cell, characterized in that the up and down ± 45 °, left and right ± 90 ° rotation is possible. The method of claim 1, The system controller, A relay device using a solar cell, characterized in that configured to determine the current position of the sun by the coordinate data of the solar sensor installed in the horizontal or longitudinal direction that outputs the most sunlight detection signal for a certain time.