JPH0527025A - Marine vessel approach alarm system - Google Patents

Abstract

PURPOSE:To obtain a vessel approach alarm device which transmits alarm to a vessel and investigates the name of the vessel and records the data, when the vessel approaches a buoy installed on the sea. CONSTITUTION:When a vessel approaches very close to a buoy 1, the beat frequency of the reflected wave of the FM modulated wave transmitted from an FM-CW radar 1c of the buoy 1 is detected, and alarm sound is outputted from an alarm device 1g, and the modulated buoy discrimination information is transmitted through a transmission antenna 1f from a wireless installation 1a. A data processing device 2d performs the display corresponding to the buoy through flashing or changed color on a monitor 2f on the basis of the buoy disrimination data which is received by a wireless installation 2b through the receiving antenna 2a at a base station 2 and obtained through amplification, wave detection and decoding by the wireless installation 2b, and the buoy discrimination data and the name of the vessel are memorized in a magnetic memory device 2i, and further a buzzer 2j is operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ship approach alert system for warning a ship approaching a buoy and identifying and recording the ship.

[0002]

2. Description of the Related Art Conventionally, a ship accidentally collides against a buoy (light buoy) installed on the sea, and the buoy is submerged.
It may be washed away or damaged, and safety measures such as buoy safety in case of collision and warnings for the ship are taken.
FIG. 3 is a schematic view showing a conventional automatic disengagement device (buoy) for a light-off alarm device. In the figure, 10 is a light-off part, an alarm part,
A light-off warning device floating body consisting of a floating body part and an antenna part,
When a buoy is submerged due to a collision of a ship, the buoy automatically separates and floats above the sea to send an alarm signal as a radio buoy. 11 is a storage box installed on the buoy's landing, 12 is a storage tube provided in the storage box 11, and the flashing warning device floating body 10 is stored by the storage boxes 11 and 12, and the storage box 11 is a key. -Shaped stainless steel mounting bolts 15,1
6, it is easily and firmly attached to the equilateral angle steel below the lantern. Reference numeral 13 denotes a water pressure valve provided outside the storage housing 11, which detects the water pressure in the sea when the buoy is submerged, and based on the detection, the light-off alarm device body 10 is inserted from the storage housing 11 and the storage cylinder 12. break away. Reference numeral 14 is a pedestal that supports the storage cabinet 11.

The conventional automatic disengagement device for the extinguishing alarm device is constructed as described above, and when the buoy is submerged due to the collision of the ship, the floating valve 10 for extinguishing the extinguishing device by the operation of the water pressure valve 13
Broke away and surfaced at sea, sending a warning signal to the ship as a radio buoy.

[0004]

In the conventional automatic disengagement device (buoy) for a light-off alarm display device as described above, an alarm is issued to a ship before the ship approaches and collides with the buoy. Due to the lack of functions, there is a high possibility that a ship will collide with a buoy, and when a ship collides with a buoy and an accident occurs, a notification from the Central Office for Sea Area Monitoring will be given at the time of occurrence or after the occurrence. There was a problem that it was difficult to investigate and confirm the ship. The present invention has been made to solve such a problem, and it is possible to issue an alarm to a ship approaching a buoy and investigate and record the ship name of the ship approaching the buoy. The purpose is to obtain a viable approaching ship system.

[0005]

A vessel approaching alert system according to the present invention transmits an FM-modulated continuous wave and detects the beat frequency of the reflected wave when a vessel traveling on the sea approaches a close range. A radar unit that outputs an alarm signal,
An alarm unit that outputs a warning sound by an alarm signal from the radar unit, and the buoy identification information stored in advance in the memory by the alarm signal from the radar unit is taken out, and the buoy identification information is modulated and transmitted via a transmission antenna. A buoy arranged at sea having a transmitting unit for transmitting, a receiving unit for receiving the buoy identification signal transmitted from the transmitting unit, processing the buoy identification signal and outputting the buoy identification data, and its reception The buoy identification warning information is output based on the buoy identification data from the department, and the buoy identification warning information and the ship information for identifying the ship approaching the buoy from the sea navigation information of the ship stored in the memory in advance are displayed. An alarm processing unit for storing and a monitoring monitor for displaying buoy warning information for blinking or discoloring the position information displayed corresponding to the buoy based on the buoy identification data. Those having a base unit and a part. Further, the base unit is provided with an alarm unit for outputting an alarm sound based on the buoy identification data.

[0006]

According to the present invention, when a ship navigating over the sea approaches a buoy located at the sea at a close range, the FM modulated wave transmitted and output from the radar section of the buoy is reflected, The radar unit detects the beat frequency of the reflected wave and outputs an alarm signal to the transmitting unit. The transmission unit modulates the buoy identification information stored in the memory in advance by the alarm signal and transmits the buoy identification information via the transmission antenna. The buoy identification signal that has been modulated and transmitted is received by the reception unit of the base device, and the buoy identification data obtained by performing signal processing on the received buoy identification signal is output to the alarm processing unit. Based on the buoy identification data, the alarm processing unit outputs buoy warning information for blinking or discoloring the position information displayed corresponding to the buoy to the monitoring monitor unit for display and displays the buoy warning information stored in the memory in advance. Ship information for identifying a ship approaching the buoy is retrieved from the sea navigation information and the buoy warning information and the ship information are stored. Further, an alarm signal is output to the alarm unit based on the buoy identification data to output an alarm sound.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a system schematic diagram showing an embodiment of the present invention. In the figure, 1 is a buoy installed on the sea,
A radio 1a for transmitting an information signal A such as a buoy identification code,
The FM-CW radar 1c, FM- which transmits a continuous FM-modulated signal when the secondary battery 1b for power supply, a ship, etc. approaches and receives a beat frequency which is a reflected wave thereof
A transmitting antenna 1d that transmits a continuous FM-modulated signal from the CW radar 1c, a receiving antenna 1e that receives a reflected wave (beat frequency) transmitted from the transmitting antenna 1c, a buoy identification code from the wireless device 1a, etc. Information signal A
And an omnidirectional transmission antenna 1f for transmitting an alarm and an alarm 1g for outputting an alarm sound when a ship or the like approaches.

Reference numeral 2 is a base station fixed on land or the like, and is a buoy 1
Receiving antenna 2a for receiving an information signal A such as a buoy identification code transmitted through the omnidirectional antenna 1f, and a radio device for amplifying and detecting the information signal A such as a buoy identification code received by the receiving antenna 2a. 2b, an interface 2c that outputs a data signal by demodulating and A / D converting the analog signal amplified and detected by the wireless device 2b, a CPU and a memory, and outputs the data signal from the interface 2c to each terminal device. A data processing device 2d having a target tracking file in which the date and time of passage of the ship, the name of each ship and the code of the ship are stored in the memory, and a radar that monitors the water area of each buoy installed at sea. A graphic display monitor for monitoring the status of each buoy processed by the data processing device 2d via the device 2e and the radar device 2e. Use monitor 2f, data processing apparatus 2d
A printer 2g for printing out the data signal processed by
The character display 2h that displays the data signal processed by the data processing device 2d, the magnetic storage device 2i that stores the data signal processed by the data processing device 2d as an external memory, and the data signal processed by the data processing device 2d are abnormal. (When a buoy installed on the sea is submerged in the sea), the buzzer 2j or the like outputs an alarm sound.

The ship approach warning system of the present invention is constructed as described above, and FIG. 2 is an explanatory view showing the operation of FIG. 1, and the operation will be described. First, the buoy 1 that floats above the sea is always transmitted from the FM-CW radar 1c to the transmitting antenna 1d.
When an FM-modulated continuous wave is transmitted to the space through the ship and the ship 3 passes near the buoy 1 (for example, the ship 3
When the close distance between the buoy 1 and the buoy 1 is 5 m or less), the beat frequency that is the reflected wave becomes low and the low-frequency beat frequency is input to the FM-CW radar 1c via the receiving antenna 1e. The FM-CW radar 1 detects the level value based on the low-frequency beat frequency by the low-frequency wave reactor and the rectifier circuit included in the radar 1c.
c outputs an alarm signal notifying that the target has become equal to or less than the limit distance to the wireless device 1a and also outputs to the alarm device 1g to output an alarm sound from the alarm device 1g. The wireless device 1a reads information such as the identification code of the buoy written in ROM in advance by the alarm signal and converts the information into serial bits,
An information signal A (which may include position information and a buoy's proper name) obtained by converting the converted information into an FM wave in the VHF band such as a buoy identification code is sent to the antenna via the omnidirectional transmission antenna 1f. To do.

When the base station 2 receives the information signal A such as the buoy identification code transmitted from the buoy 1 via the omnidirectional transmission antenna 1f via the receiving antenna 2a, the radio 2
Reference numeral b denotes the information signal A which is amplified and detected and demodulated and output to the interface 2c. The interface 2c performs A / D conversion or the like on the demodulated analog signal and a data signal including a buoy identification code or the like. Output to 2d. Based on the data signal from the interface 2c, the data processing device 2d identifies the ship currently passing around the buoy from the target tracking file, and blinks or discolors the buoy displayed on the monitoring monitor 2f. The name of the ship (symbol, etc.) is displayed, and the date and time of occurrence, the buoy name, and the ship name are stored in the magnetic storage device 2i. Furthermore, at that time, the buzzer 2j is alarmed to audibly notify the approach of the ship to the staff. In this way, when a ship approaches a buoy installed on the sea, an alarm sound is generated from the buoy to call attention to the ship and at the same time the name of the ship and the approach status with the buoy are displayed on the display unit. And, the situation can be stored and left. Also, if an abnormality occurs in the buoy due to a collision of ships,
By the wireless communication from the base station, the route patrol boat can rush to the site and check the buoy damage situation.

[0011]

As described above, according to the present invention, when a ship sailing over the sea approaches a buoy arranged on the sea at a close range, the buoy outputs a warning sound to the ship, and Since the buoy identification information transmitted from the buoy transmitter is received by the base device to display the buoy warning information, and the vessel approaching the buoy is specified and stored,
The abnormal approach to the buoy can be confirmed in real time, the ship can be recorded and left, and appropriate action can be taken immediately even if the ship damages the buoy.

[Brief description of drawings]

FIG. 1 is a system schematic diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing the operation of FIG.

FIG. 3 is a schematic view showing a conventional automatic disengagement device for a light-off alarm device.

[Explanation of symbols]

1 buoy 1a radio 1b Secondary battery 1c FM-CW radar 1d transmitting antenna 1e receiving antenna 1f Omnidirectional transmitting antenna 1g alarm 2 base stations 2a receiving antenna 2b radio 2c interface 2d data processor 2e Radar device 2f monitoring monitor 2g printer 2h character display 2i magnetic storage device 2j buzzer

Claims (2)

[Claims] 1. A radar section that transmits an FM-modulated continuous wave and detects the beat frequency of the reflected wave when a ship traveling at sea approaches a close range and outputs an alarm signal.
An alarm unit that outputs an alarm sound by an alarm signal from the radar unit, and buoy identification information stored in advance in the memory by the alarm signal from the radar unit is taken out, and the buoy identification information is modulated and transmitted via a transmission antenna. A buoy having a transmitter for transmitting, a receiver for receiving the buoy identification signal transmitted from the transmitter, processing the buoy identification signal to output buoy identification data, and a buoy identification from the receiver. An alarm processing unit that outputs the buoy identification warning information based on the data, and stores the buoy identification warning information and the ship information for identifying the ship approaching the buoy from the sea navigation information of the ship stored in advance in a memory; A base device having a monitoring unit for displaying buoy warning information for blinking or discoloring the position information displayed corresponding to the buoy based on the buoy identification data. A vessel approaching alert system characterized by being equipped. 2. The vessel approaching alert system according to claim 1, wherein the base unit is provided with an alarm unit that outputs an alarm sound based on the buoy identification data.