JPH09211123A - Mark with collision danger detection function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent damage of a mark due to collision with a target by detecting that the target enters a previously set monitoring area with a radar, giving the alarm of collision danger for the target, inform it of collision avoidance and transmitting it to a management side. SOLUTION: A radar transceiver 2 emits a pulse-modulated radar electric wave from an antenna 1, when the radar electric wave reflects on a target ship and is received through the antenna 1, the signal is transmitted to a danger area detection part 3. When the signal is input, the danger area detection part 3 monitors whether the ship detected on the basis of the signal enters a previously set radius, and when the ship enters the radius, a trigger signal is transmitted to an alarm generation part 4. When the trigger signal is input, the alarm generation part 4 transmits a previously set message to a speaker 5 as it is made timing, the message and the other message of a measuring time at the time of signal inputting are sent to a wireless installation 6. The wireless installation 6 sends an input message to a management center.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a buoy floating on the sea for use as, for example, a traffic sign for a ship.

[0002]

2. Description of the Related Art A buoy of this type is equipped with a radar reflector so that the buoy can be clearly seen on a radar image of a ship and the detection distance can be extended. As the radar reflector, an eight-sided radar reflector is used for reasons of reflection performance, visual recognition of lights, and maintenance.

[0003]

The conventional buoy described above appears on the radar image of the ship even at a considerable distance because of its good reflection performance of radar radio waves, but especially when the ship approaches the buoy. When the sea was rough, a collision could occur due to a steering error or the like. Depending on the extent of the collision, if the buoy function cannot be fulfilled, there is also a problem that the safety of navigation cannot be ensured for the following ships.

[0004]

A sign with a collision risk detection function according to the present invention has a monitoring area centered on the main body, and when a radar detects an intrusion of a target into the monitoring area, it issues a collision danger alarm. At the same time, it is equipped with a means for transmitting that fact to the management side. Means in the present invention are
When the radar detects that a target has entered a preset monitoring area, it issues a collision danger alarm to the target to notify the target of collision avoidance, and also notifies the management side of that fact.

[0005]

1 is a block diagram showing an embodiment of the present invention. In the figure, 1 is a rotary antenna installed in a buoy (not shown), and 2 is a radar transceiver of a pulse modulation radar, for example. Then, the pulse-modulated radar radio wave is radiated from the antenna 1 and the reflected wave reflected on the target object (ship) is received via the antenna 1. Reference numeral 3 denotes a dangerous area detection unit, which stores a target received as a PPI image centering on the buoy as a binary signal with local coordinates, and stores the target within a preset radius (time) centering on the buoy. When is invaded, it sends a trigger signal. The target is detected after noise such as sea surface reflection is removed.

Reference numeral 4 is an alarm generator, which is a clock circuit (not shown).
When a trigger signal from the dangerous area detection unit 3 is input, a preset message (voice or symbol) is sent to the loudspeaker 5 and the wireless device 6. Also, the time when the trigger signal is input is read from the clock circuit, converted into a message, and sent to the wireless device 6. The wireless device 6 controls the activation of the radar transceiver 2, the dangerous area detection unit 3, and the alarm generation unit 4 based on a command from a management center that manages the buoy, and when such a failure is detected, that effect is detected. Send
Also, when the message is input, it is transmitted to the management center.

Although the antenna 1 is a rotary type and the radar transceiver 2 is a pulse modulation radar, the antenna 1 may be omnidirectional and the radar transceiver 2 may be an FMCW radar. In that case, the dangerous area detection unit 3 outputs a trigger signal to the alarm generation unit 4 when the target coming toward the buoy enters the preset radius as described above.

In the buoy with the collision risk detecting function constructed as described above, the radar transceiver 2 radiates pulse-modulated radar radio waves from the antenna 1, and the radar radio waves are reflected by the target ship. When the signal is received via the antenna 1, the signal is sent to the dangerous area detection unit 3. When the signal is input, the dangerous area detection unit 3 monitors whether or not a ship detected based on the signal has entered within a preset radius, and when the ship enters the radius. Sends a trigger signal to the alarm generator 4. When the trigger signal is input, the alarm generation unit 4 sends a preset message to the loudspeaker 5 with the timing as a timing, and also sends the message and the message of the measurement time when the trigger signal is input to the wireless device 6. To do. When the message is input, the wireless device 6 transmits it to the management center.

As described above, according to the present embodiment, when the target vessel enters within the radius set in the danger zone detection section 3, the alarm generation section 4 sends a message notifying the danger of collision through the loudspeaker 5. Since it is emitted, it is possible to prevent the buoy from being damaged due to a collision with the ship.

Further, even if the buoy is damaged due to a collision with a ship, the wireless device 6 sends the message of the alarm generation unit 4 to the management center, so that there is an effect that immediate maintenance work can be expected. .

In the above embodiment, the buoy with the collision risk detection function is described as being used at sea. Good. Further, a sign having this function may be installed in a dangerous area such as a cliff on the road or a wall surface in the tunnel to contribute to the safety of road traffic. Furthermore, although it has been described in the present embodiment that the radar transceiver 2 and the antenna 1 thereof are adopted, the same effect can be obtained by using a laser radar instead.

[0012]

As described above, according to the present invention, when a radar detects an intrusion of a target into a surveillance area, a warning of a collision risk is issued. The effect that can be prevented is obtained. Further, even if the sign is damaged due to the collision with the target, the warning is issued to the management side before the collision, so that there is an effect that immediate maintenance work can be expected.

[Brief description of drawings]

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

[Explanation of symbols]

 1 Antenna 2 Radar transmitter / receiver 3 Hazardous area detector 4 Alarm generator 5 Loudspeaker 6 Radio

Claims (2)

[Claims] 1. A monitoring area is set around the main body,
A sign with a collision risk detection function, which is equipped with means for transmitting a warning of a collision risk when a radar detects an intrusion of a target into a surveillance area and transmitting the warning to the management side. 2. An antenna, a transmitter / receiver for radiating a radar radio wave through the antenna and receiving a reflected wave that reflects a target through the antenna, and a monitoring area is set around the main body, and the transmitter / receiver is set. A dangerous area detection unit that determines whether or not a target has entered the surveillance area based on the reflected wave received by the unit, and sends a trigger signal when the target enters the surveillance area, and the trigger signal is input. A sign with a collision risk detection function, comprising: an alarm generation unit that issues an alarm when triggered, and an alarm transmission unit that transmits the alarm of the alarm generation unit to a management side.