KR20040012244A - Synchronous Flicker Control Device Of Light Buoy With GPS - Google Patents

Abstract

PURPOSE: An apparatus for controlling synchronization on and off of a light buoy by using a global positioning system(GPS) is provided to reduce the overall size of the apparatus without requiring an additional wireless transmission device to transmit the synchronization on/off-signal and the time. CONSTITUTION: An apparatus for controlling synchronization on and off of a light buoy by using a global positioning system(GPS) includes a GPS receiver(11), an auxiliary clock(12), a communication port(13), a controller(14), an on/off-signal generator(15), a power supply(19), a charge and discharge driver(18), a motor driver(17) and a ramp driver(16). The apparatus controls the synchronization on/off of the light buoy or using time from the GPS satellite.

Description

Synchronous Flicker Control Device Of Light Buoy With GPS}

The present invention uses a global positioning system (GPS), a comprehensive positioning system, to enhance the identification of the back buoys installed for the purpose of safe operation of ships entering and leaving the port at night. A synchronous blink control device that controls the coincidence of a flashing point of a plurality of buoys used for the same purpose in the vicinity. The GPS receiver is used to receive universal time (UTC) transmitted from a GPS satellite. As a reference, a control is performed such that a plurality of flashes of isobuts flash simultaneously occur at a mutually agreed time.

Although the docks, which are navigational aids, are installed and operated so that ships can enter and exit safely along the route, it is difficult to distinguish the lights around the ports from the flashing lights at night, making it difficult to operate the ships safely. Is occurring. Therefore, the following methods have been developed to simultaneously flash the light of the blinking buoys independently to improve the distinction and discrimination of the buoys.

Although a method of controlling a blinking time in conjunction with a FM radio broadcast and a synchronous blinking control method by two-way wireless data communication have been developed, the following technical limitations and usage problems have arisen.

The synchronous flashing control method to control the broadcasting time signal of FM radio is to set the internal time according to the broadcasting time signal and to control it based on this time. The conditions were different, and the time interval was long, so the internal clock was gradually turned between the time signal and the time signal.

Two-way wireless data communication is divided into self station and mother station, and the synchronization control signal is transmitted to the station on the sea from the mother station on the land using the radio wave of VHF (Very High Frequency) band which is used as the common frequency on the sea. Because it is a transmission method, there is a limitation in the installation and operation according to the distance between the home country and the country, the topography between the home country and the country, and the communication distance of the radio waves. Interference or mutual interference with the communication of neighboring ship stations occurs, and the synchronization is not good because the conditions are different on the distance from the mother station to each station and on the propagation path of the synchronization signal transmitted from the mother station. In addition, the structure of the device for implementing the flashing is relatively complicated, which is uneconomical for installation and maintenance.

Accordingly, the present invention has been developed in consideration of the technical problems in use in the implementation of the synchronization flash of the double buoy, an apparatus for controlling the synchronization flash of the double buoy using a GPS as a more stable source of time information.

Receiving the universal time transmitted from the GPS satellites to the GPS receiver and inputting the received universal standard time to the control unit, and compared with the programmed flashing time. The control unit sends a synchronization signal to the blinking signal generator at a point in time coinciding with the received blinking time and generates a blinking signal according to this point. Therefore, if the same flashing rule is set for a plurality of isochronous targets to be synchronized, the target flashing effect can be obtained by blinking at the same time according to the prescribed time.

Since GPS satellite signals can be received from all directions around the earth, there is no restriction in the installation location depending on the possibility of receiving time information. Also, since the frequency band is UHF (Ultra High Frequency), which is not used for coast station or ship station communication, Since the time information received without any crosstalk is accurate and the reception period is short, the time of the sub-clock can be corrected from time to time. Therefore, even if intermittent reception failure occurs for any reason, the corrected time clock is automatically selected. Since the flashing is always implemented correctly.

1 is an overall configuration diagram of the device

In order to realize the synchronous flashing, the GPS receiver 11 receiving the GPS satellite signal is compared with the received universal standard time and the prescribed flashing time to command the synchronous signal and control the charge / discharge of the battery, the detection of the bad lamp, and the automatic replacement. The control unit 14 which controls the overall control, the auxiliary clock 12 which is regularly calibrated according to the universal time received from the GPS receiver, and used when there is an abnormality in the GPS receiving system, generates a flashing signal in response to the synchronization command of the control unit. A flashing signal generator 15 to receive a flashing signal from the flashing signal generator and a lamp drive to intercept the light emission of the lamp according to the flashing signal, and a motor drive to receive a lamp replacement signal from the controller to drive a lamp replacement motor (17), the charging and discharging drive 18 to control the charging and discharging of the battery by receiving the charge and discharge control signal from the control unit, the communication port 13 for communication with an external device, if necessary, such as To give a combination of electrical coupling of the parts logically consists of a control program controlling the rules and settings contained.

The component interactions for the implementation of synchronization flashing and other functions are as follows.

The GPS receiver 11 transmits the universal standard time received from the GPS satellites to the controller 14 once every second. The control unit calculates the flow of universal time received from the GPS receiver and sends the synchronization signal to the blinking signal generator 15 at a time point coinciding with the flashing time defined in the control program. The time of the built-in auxiliary clock 12 is periodically corrected accordingly. The flashing signal generation unit sends a flashing signal set to the lamp drive 16 at the time when the synchronization signal sent from the control unit is recognized, and the lamp drive interrupts the light emission of the lamp according to the flashing signal. In the case of installing and operating devices equipped with the same control regulations in a plurality of buoys or route signs to be synchronized with each other, the lamps are simultaneously turned on and off according to a set rule. This is implemented.

In addition, this synchronous flash control device is configured to exchange data with external device through serial communication, and it has a built-in battery charge / discharge control function and automatic lamp replacement function.

The controller 14 constantly detects the voltages of the battery and the solar cell and sends control signals that meet the charge / discharge conditions specified in the control program to the charge / discharge drive 18 to manage energy storage and efficient use of the solar cell.

The control unit monitors the state of the lamp in use and sends a control signal to the motor drive 17 when the lamp is damaged or connects to the motor drive 17 to drive the lamp replacement motor. Replace the lamp.

The present invention uses the precise universal time received from the GPS satellites as the time for the basic data of synchronization flashing, so there is no need for a separate radio transmitter and frequency for transmitting the synchronization flashing signal or time. Improve the environment

Since time information is obtained through the radio media of UHF area of GPS satellite which is not used in port or ship communication, there is no loss or distortion of time information by radio interference of neighboring coast station or ship station communication. Receiving time information is possible in all regions of the earth, so this GPS-equipped buoyancy control device is not subject to installation restrictions by region. In addition, the installation place of this device only needs to be installed on the buoy which needs synchronous flashing, so the installation is simple and the number of the buoys to be synchronously flashed is infinite. Maintenance and management are also economically viable.

Claims (2)

Apparatus for controlling the synchronization flashing of the back mark or the route mark using the universal time received by the GPS receiver. Apparatus for controlling the synchronous flashing of a back mark or a route mark by using or processing time information received from a GPS as it is.