KR20050000890A - Highly efficient wireless buoy system having the function of GPS/Paging - Google Patents

Abstract

PURPOSE: A high-performance radio buoy having a GPS/paging function is provided to reduce largely power consumption by selectively transmitting a location signal only when receiving a call signal. CONSTITUTION: An RF antenna(11) is used for receiving a call signal from the outside or transmitting a location signal to the outside. An RF transceiver(12) includes a paging receiver for discriminating the call signal, a radio transmitter for transmitting a signal through the RF antenna, and a modulator for inputting a modulated signal into the radio transmitter receiver. A system controller(16) is used for outputting the stored data to the outside according to the demodulated signal of the paging receiver and maintaining a standby mode. A GPS receiver(21) is used for receiving current location data from a satellite and updating the location data. A sensor(17) is used for measuring environment information.

Description

Highly efficient wireless buoy system having the function of GPS / Paging}

The present invention relates to a wireless buoy used in ocean fishing, military and environmental exploration, and more particularly, due to the high loss rate that occurs when using a conventional wireless buoy and unnecessary consumption of the battery due to the continuous use of power. The present invention relates to a high-performance wireless buoy with GPS / paging function that has been significantly improved through a method of combining GPS (Global Positioning System) and paging.

As the modernization of fisheries and military applications, environmental monitoring and exploration activities are actively conducted, the demand for wireless buoys is rapidly increasing, especially in Korea, where the three sides are surrounded by the sea.

As an offshore installation, buoys initially had a structure of a floating body that could be easily identified with the naked eye, but was often lost due to a loss that was impossible to collect due to the displacement of location due to disasters such as tide changes and typhoons. In addition, it was uncomfortable because the identification was vague even in the light fog.

In order to improve the problem of the identification method depending on the clock as described above, a wireless buoy using an RF signal has been developed.

6 shows a configuration of a wireless buoy generalized in the related art.

In the drawing, the high frequency antenna 1, which is a dipole antenna for transmitting and receiving radio signals, emits a signal transmitted from the high frequency transceiver 2 or transmits a signal received from the outside to the high frequency transceiver 2 In addition, the high frequency transceiver 2 has a power amplifier and a wireless receiver circuit therein to amplify and transmit the received signal to the frequency and power detector 3, or the position signal under the control of the microprocessor 4 As a result, a high output signal is oscillated and transmitted to the high frequency antenna 1.

The frequency and power detector 3 determines whether the radio signal transmitted from the high frequency transceiver 2 is a frequency signal assigned to the frequency signal, and if the signal corresponding to its frequency is higher than or equal to a certain level, the result is a microprocessor. It is supposed to enter in (4).

In addition, the microprocessor 4 controls the operation of the entire component, and the high frequency transceiver 2 periodically receives a high-frequency radio signal (RF Beacon) according to the frequency and the result of the signal discrimination sent from the power sensor 4. Control to send

In this configuration, the power is supplied to a high frequency transceiver and a frequency / power sensing unit for high power transmission using a battery 5 of 24V capacity, except that the microprocessor taps the 5V power supply 6 at a 24V power supply. It is configured to use.

The above method has a merit that it is easier to identify the position than the conventional visual identification buoy because it transmits its position as a radio wave. There is a disadvantage that can not be. In addition, if the radio waves continue to be released, there is a high risk of theft due to the inability to prepare for illegal unauthorized collection by others, and especially security facilities such as location exposure in military facilities. In addition, since the location of the wireless buoy is tracked only by the signal, it is not easy to receive the signal transmitted from the wireless buoy unless the device is equipped with high sensitivity. In addition, in order to receive radio waves with high sensitivity, it is difficult to meet a considerable technical difficulty, while the accuracy of the position tracking cannot be satisfactory, and the overall system operation efficiency is also low.

In order to overcome the above-mentioned problems, the present invention can easily and accurately perform positioning of buoys through the GPS positioning system, and simultaneously reduce the unnecessary power consumption of buoys by selectively calling the buoys only when necessary. It also aims to provide high-performance wireless buoys with GPS / Paging that can eliminate the risk of illegal theft and security exposure.

The object of the present invention described above is a high frequency antenna for receiving a call signal from the outside or transmitting a position signal to the outside, and a paging receiver for demodulating the signal received through the high frequency antenna to determine whether the call signal is its high frequency. A high frequency transceiver comprising a radio transmitter for transmitting a signal to the outside through an antenna, a modulator for inputting a modulated signal to the radio transmitter, and a signal demodulated by the paging receiver enters an operation mode, thereby storing data stored therein. Is controlled to be emitted to the outside via a modulator and a wireless transmitter, and in the case of non-call signal, the system controller which maintains the standby mode in which only the paging receiver operates, and periodically through its satellite in the operation mode by the system controller. Receive position data and control the system As input to the may be implemented with a configuration including a conventional sensor unit for measuring the reception jipieseu, environmental information to renew the current position data.

In this configuration, the position signal transmitted through the wireless transmission unit may include data measured through the sensor unit.

In addition, the GPS receiver may be configured to repeat the operation of continuously updating the current position data input to the system control unit by collecting the position information from the satellite in a short period when the standby mode is switched to the operation mode.

The high frequency antenna is preferably a dipole antenna.

And a paging receiver of the high frequency transceiver, a low noise amplifier for amplifying a signal received through the high frequency antenna, a low pass filter for filtering only a specific signal from the amplified signal, a mixer for modulating the filtered signal, and a modulating by the mixer. And a demodulator for demodulating the output signal and inputting the demodulated output signal to the system controller.

The wireless transmitter may include a mixer for modulating the frequency modulated signal in the modulator, a power amplifier for amplifying the modulated signal, and a low pass filter for filtering the amplified signal.

On the other hand, the paging receiver may be configured with a preamble field and a data field for retrieval of a call signal, and the data field may include a sync codeword, a call address codeword and a data codeword.

Also, the paging receiver periodically checks the preamble field composed of 576 101010 .. bits, and walks up at a predetermined bit pattern. The paging receiver receives its synchronization codeword from the first data field received. And then retrieve the call address codeword that comes after the synchronized code and receive the data codeword if there is a call address corresponding to it. Otherwise, the next data field is received to determine whether the call is made. Can be determined.

The control message for controlling the operation of the GPS wireless buoy may be stored in a data field of a call signal format for the paging receiver.

The sensor unit may further include a light emitting device which is blinked and operated to enable location identification at night through vision.

In the present invention described above, the paging receiver is suspended until the unique call signal transmitted from the bus remains in a standby mode, and when the unique call signal is received, the operation mode is switched to the GPS receiver in a short period. Receiving its current location data through a satellite and updating the current location data stored in the system control unit, the system control unit controls the modulator and the radio transmitter so that the signal including the current position data is emitted to the outside. Will be.

1 is an explanatory diagram schematically showing a usage example related to a GPS wireless buoy of the present invention based on GPS.

2 is a block diagram showing the configuration of a GPS wireless buoy which is a main part of the present invention.

FIG. 3 is a circuit diagram schematically showing the relationship between the high frequency transceiver and the radio modem unit shown in FIG. 2; FIG.

4 is a system diagram showing a call signal format of a GPS wireless buoy applied to the present invention.

5 is a configuration diagram showing an example of the configuration of a position signal receiver provided in a buoy collecting busbar;

6 is a block diagram showing a configuration related to a conventional radio buoy;

<Description of the symbols for the main parts of the drawings>

10: GS wireless buoy 11: high frequency antenna

12: high frequency transceiver 13: wireless transmitter

14 modulator 15 paging receiver

16 system control unit 17 sensor unit

21: GPS receiver

Hereinafter, the main features of the present invention will be described in detail by preferred embodiments according to the accompanying drawings.

1 is a view for explaining the concept of the GPS wireless buoy system according to the present invention, the fishing tools, or measuring equipment, military facilities, etc. are distributed along the GPS wireless buoy (10), so distributed GPS The wireless buoy 10 periodically receives and updates its location data through the satellite 30, and normally maintains a no signal state.

In this case, in order to collect the GPS wireless buoy 10 that is no signal operation, the collection bus 40 emits the call signal 50 at the distributed position, and the wireless buoy 10 transmits the call signal 50. In response thereto, the position signal 60 is transmitted, and accordingly, the mother bus 40 receives the position signal with the mounted signal receiving equipment 70 to detect and collect the current position of the distributed wireless buoy 10. .

Therefore, according to the present invention, the position of the GPS wireless buoy 10 can be easily detected, and the GPS wireless buoy 10 maintains no signal state until the call signal 50 is transmitted, thereby minimizing power consumption. It becomes.

In the present invention having such a configuration, the GPS wireless buoy 10 has a configuration as shown in FIG.

The high frequency antenna 11 is a dipole antenna for transmitting and receiving a radio signal to emit a signal transmitted from the high frequency transceiver 12 to the outside, or to receive a signal received from the outside to the high frequency transceiver 12. This is a structure that is not affected by climatic factors such as waves or wind, and is treated to prevent corrosion due to salinity.

The high frequency transceiver 12 includes a radio transmitter 13, a modulator 14, and a paging receiver 15. The radio transmitter 13 transmits an internally modulated signal to the high frequency antenna 11. The paging receiver 15 captures a call signal from an external signal received through the high frequency antenna 11 and inputs it to the system controller 16.

The high frequency transmission / reception unit 12 having such a configuration is controlled by the system control unit 16 as follows.

The system controller 16 sends a standby board signal to the modulator 14 until the paging receiver 15 receives a signal indicating the reception of a call signal. The modulator 14 and the wireless transmitter 13 transmit the standby board signal. Is set to the standby mode, and when a paging signal is input from the paging receiver 15, the device wakes up and sends an operation signal of the modulator 14. FIG.

The modulator 14 modulates the signal transmitted from the system controller 16 according to a format and a protocol, and sends the modulated signal to the wireless transmitter 13, and the wireless transmitter 13 amplifies the modulated signal to generate a high frequency antenna 11. Is released through).

Meanwhile, the signal input to the system controller 16 from the paging receiver 15 must also be demodulated so that the system controller 16 can recognize the signal as a signal.

3 is a schematic diagram illustrating the circuit configuration of the above-described high frequency transceiver 12, wherein a call signal received from the outside is amplified while passing through the low noise amplifier 151 from the transmit / receive switch 121 to the paging receiver 15. The amplified signal is a signal modulated by the program logic 161 controlled by the system control unit 16 in the mixer 153 while filtering only the desired signal by passing through the low pass filter 152. The modulated signal is filtered again through the low pass filter 154 and then converted into a demodulated signal by the demodulator 155 and then input to the system controller 16 to wake up it.

The signal transmitted from the wireless transmitter 13 is transmitted as a signal modulated by the digital frequency modulator 131 of the modulator 14 by the signal transmitted from the system controller 16, so that the signal of the wireless transmitter 13 When applied to the mixer 131 is a signal modulated by the program logic 161, the modulated signal is a low pass filter 132, a power amplifier 133, a low pass filter 134 and the transmission and reception switch ( 121 is sent to the outside via the high-frequency antenna 11 to inform the location information.

Referring back to FIG. 2, the system controller 16 may receive and store measurement information sent from the sensor unit 17, and include the same in a signal transmitted from the wireless transmitter 13 to be emitted.

The sensor unit 17 is a device for measuring environmental related information such as algae, wind direction, seawater temperature, salinity concentration, and turbidity in reality, and includes a light emitting device that is blinked to enable location identification at night time. It may be a structure in which (18) is further added.

In the present invention, the operating power of the GPS wireless buoy 10 uses a battery 19 having a 24V capacity as in the prior art to supply power to the wireless transmitter 13 and the modulator 14 for signal transmission and reception, and the system The controller 16 and the sensor unit 17 supply the 5V power supply 20 tapped from the battery 19.

In addition, the system controller 16 receives the current position information collected by the GPS receiver 21 from the satellite 30 shown in FIG. 1, and the GPS receiver 21 receives the system controller 16 when the specific time comes. Operation is performed periodically according to the instruction of receiving the position information from the satellite 30 and updated to the latest position information.

The GPS wireless buoy 10 of the present invention having the above-described configuration is operated so that only the paging receiver 15 can receive a call signal when the standby mode is distributed to the sea, and all other components are maintained in the standby mode. Power consumption is minimized.

In this waiting state, when the collecting bus 40 near the distribution position sends out the call signal 50 for collection, the paging receiver 15 receiving the signal demodulates the call signal 50 and the system control unit 14 ).

The authenticity of the call signal can be determined through a format. In practice, however, since the frequency and bandwidth resources allocated for the wireless buoy are very limited, the format must also be able to send and receive the necessary information while calling the desired wireless buoy within the limited allocated bandwidth.

To this end, the present invention is an example of the format of the call signal as shown in FIG.

The signal format consists of a preamble field P and data fields D1 and D2, and the data fields D1 and D2 can be increased or decreased according to the amount of call data. The data fields D1 and D2 are composed of a sync code word (SC), an address code word (AC), and a data code word (DC).

More specifically, the paging receiver 15 periodically checks the preamble field P composed of 576 101010... Bits and wirelessly receives a predetermined bit pattern, for example, an 8-bit pattern of 10101010. The call address codeword AC, which is regarded as called and wakes up, synchronizes the sync codeword SC from the first data field D1 received with its operation clock, and then comes out after the sync code. Search for and receive the data codeword (DC) if there is a call address corresponding to it, otherwise receive the next data field (D2) and repeat the search and the data of his own call in the same way do. After that, the same operation is repeatedly performed, and if there is no more sync code word (SC) and there are no more data fields, it ignores the data received so far and goes back to standby mode. The wake-up signal is input to the system controller 14 as well.

In this case, the data fields D1 and D2 may include a control message for controlling various operations of the GS wireless buoy 10 so that the GPS wireless buoy 10 may be operated according to the transmitted message. Can be.

When the wake-up signal is input, the system controller 14 switches all the components to the operation mode, and from this time, the operation of the GPS receiver 21 is started to receive the GS data in a short period and input the system data to the system controller 14. At the same time as the position information is updated periodically, the system controller 14 controls the signal including the data stored in the input through the modulator 14 and the radio transmitter 13 to be transmitted to the outside.

The signal transmitted to the outside is the position information 60 of itself, and this includes environmental measurement information such as seawater temperature, flow rate, and weather measured by the sensor unit 17.

The transmitted position information 60 is easily received by the bus line 40 so that the position of the GPS wireless buoy 10 can be easily tracked. In addition, the light emitting device 18 added to the sensor unit 17 is blinked. It is also visually recognizable, making it easy to find at night.

The signal receiving device 70 mounted on the bus bar of FIG. 1 may be applied in any manner as long as it can capture the position signal 60 transmitted from the GPS wireless buoy 10. In the present invention, as shown in FIG. We adopt constitution.

When the receiver 72 of the conventional method having the reception high frequency antenna 71 is integrally matched with the signal processor 73 and configured as a unit, the receiver 72 can be connected to the computer 74 via ordinary interface means. Only the united signal receiving equipment 70 can be carried or connected to a computer 74 to be used as an attachable equipment that can obtain more detailed information display.

As described above, the present invention transmits a location signal only when the GPS wireless buoy is called, so that power consumption can be minimized, so that the use time of the buoy spread in the sea becomes long, and the buoy responds only to the unique call signal. Since it does not cause illegal theft problem or military security loophole problem, it has a feature that fundamentally solves the problems raised in the prior art.

The present invention described in the above-described embodiments is not limited to the illustrated examples, it is obvious that various modifications and changes can be made by those skilled in the art without departing from the technical spirit of the present invention. The result of the modification should fall within the claims of the present invention.

Claims (12)

A high frequency antenna for receiving a call signal from the outside or transmitting a position signal to the outside; Paging receiver for demodulating the signal received through the high frequency antenna to determine whether the call signal or not, a wireless transmitter for transmitting a signal to the outside through the high frequency antenna and a modulator for inputting the modulated signal to the wireless transmitter High frequency transceiver; When the signal demodulated by the paging receiver is input as a call signal, the operation mode is set to control the internal data to be released to the outside through the modulator and the wireless transmitter. A system controller for maintaining; A GPS receiver which receives its current location data through a satellite periodically and inputs the current location data through the satellite in the operation mode by the system control unit to update the current location data; High-performance wireless buoy with GPS / paging function, characterized by a configuration including a normal sensor unit for measuring environmental information. The high performance wireless buoy with the GPS / paging function of claim 1, wherein the position signal transmitted through the high frequency transmission / reception unit includes data measured through the sensor unit. The GPS / paging function of claim 1, wherein the GPS receiver receives the position information from the satellite at a short cycle and continuously updates the current position data input to the system controller when the GPS receiver is switched to the operation mode. Equipped with high-performance wireless buoys. 2. The high performance wireless buoy with GPS / paging function according to claim 1, wherein the high frequency antenna is a dipole antenna. The paging receiver of claim 1, wherein the paging receiver A low noise amplifier for amplifying a signal received through the high frequency antenna; A low pass filter filtering only a specific signal from the amplified signal; A mixer for modulating the filtered signal; And a demodulator for demodulating the output signal modulated by the mixer and inputting the demodulated output signal to the system control unit. The method of claim 1, wherein the wireless transmission unit A mixer for modulating a frequency modulated signal at the modulator; A power amplifier for amplifying the modulated signal; And a low pass filter for filtering the amplified signal. 2. The method of claim 1, wherein the call signal format for retrieving a call signal from the paging receiver comprises a preamble field and a data field, and the data field includes a sync codeword, a call address codeword, and a data codeword. High-performance wireless buoy with the features of PS / paging function. 8. The paging receiver according to claim 7, wherein the paging receiver periodically checks the preamble field composed of 576 101010 .. bits, and walks up at a predetermined bit pattern, and receives the sync codeword from the first data field received. After synchronizing with the operation clock of, search for the call address codeword following the synchronized code and receive the data codeword if there is a corresponding call address, otherwise, receive the next data field High-performance wireless buoy with GPS / paging feature for determining presence of calls. The high performance wireless buoy with the GPS / Paging function of claim 8, wherein a control message for controlling the operation of the GPS wireless buoy is stored in a data field of a call signal format for the paging receiver. The high performance wireless buoy with the GPS / paging function of claim 1, wherein the sensor unit further comprises a light emitting device which is blinked and operated to visually identify a position at night. Until the unique call signal transmitted from the mothership is received, the paging receiver remains in a standby mode in which only the paging receiver is operated, and when the unique call signal is received, the GPS signal is switched to the operation mode and the GPS receiver performs its Receiving the current position data and updating the current position data stored in the system control unit, and at the same time, the system control unit is configured to control the modulator and the wireless transmitter to emit the signal including the current position data to the outside. High performance wireless buoy with GS / Paging. 12. The high performance wireless buoy with a ps / paging function according to claim 11, wherein the unique calling signal by the recovery busbar is directed to the corresponding wireless buoy or the entire wireless buoy.