JPH04123998A - Emergency stop device for marine vessel - Google Patents

Abstract

PURPOSE:To prevent a collision by outputting an emergency stop signal when a warning signal being outputted at time of a radar catching an obstacle during shipping navigation, is outputted beyond the critical time, and stopping a ship emergently by way of once backward movements. CONSTITUTION:When a radar 2 catches an obstacle, a warning signal outputting means 1 starts to output a warning signal (a), and a buzzer or a warning means 3 is given, calling a navigator's attention. When the navigator is not aware of it and the warning signal (a) is continuously outputted beyond the set critical time, an emergency stop signal (b) is outputted from an emergency stop signal outputting means 4, and a controller 12 for a propulsion machine 11 is remote- controlled by an emergency stop control means 10, making engine speed into a state of being dropped, and a ship is set down to an emergency stop state by way of backward motion from forward motion. In addition, a whistle or siren or a warning means 9 is sounded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a device for emergency stopping of ships, which is used to ensure safe navigation of ships.

! - Prior Art 1 There have been as many as 6,000 collision accidents between HIi, L and IJ vessels of the Maritime Accident Bureau in 2017.

Most of the causes of these collisions and boarding and drowning accidents are due to the actions of the vessel operator, such as non-compliance with navigational regulations and insufficient lookout.

BACKGROUND ART Conventionally, in order to avoid ship collisions, ships have been equipped with collision warning systems that sound a buzzer or the like to notify an emergency situation when a radar detects a dangerous obstacle.

If the operator notices a warning from a buzzer, etc., and determines that there is a risk of collision after checking the navigational status of the other vessel, he or she will take evacuation measures or stop the vessel, resulting in a collision. We are trying to prevent accidents.

[Invention or Problem to be Solved] However, in the case of a street collision warning system, the operator may be asleep or away from the bridge and may not be aware of the warning. There are two cases in which, due to this human carelessness, the vessel operator fails to take measures to avoid a collision, resulting in a collision.

In addition to thoroughly checking the precautions through training and strengthening management of fatigue and health, there is a strong demand for countermeasures to be taken after determining the level of carelessness on the part of ship operators.

[Means for Solving the Problems] The present invention aims to solve these inconveniences, and its gist is to start outputting a warning signal when the ship's navigation radar captures an obstacle. An alarm signal output means, an emergency stop signal output means for outputting an emergency stop signal for the propulsion machine when the alarm signal is continuously output beyond a set limit time, and a connection to the control device of the propulsion machine. Emergency stop control means for bringing the ship into an emergency stop +, Iz state from a forward operation to an astern operation when the emergency stop signal is output. - in the device.

[Function] When the radar detects an obstacle while the ship is navigating, the warning signal output means starts outputting the warning signal, and if the warning signal continues to be output beyond the set limit time, an emergency stop signal is issued. An emergency stop signal is output from the output means, and when the emergency stop signal is output, the emergency stop control means connected to the control device of the propulsion machine causes the ship to enter an emergency stop state through a forward motion and a backward motion.

[Embodiment] Fig. 1 and Fig. 2 show an embodiment of the present invention, in which 1 is an alarm signal output means, which is connected to a radar 2 consisting of a radar scanner and a radar receiver, and which outputs an alarm signal. It can be set arbitrarily in advance, and if an obstacle is detected within this range while the ship is navigating, an alarm will be activated.
The alarm means S built in the radar receiver, for example, sounds a buzzer, to alert the operator.

Reference numeral 4 denotes an emergency stop signal output means, which includes a timer 5 for measuring the duration of the alarm signal a output from the alarm signal output means 1, and a timer 5 for setting the limit time for the alarm signal a to be continuously output. It is equipped with a comparison means 7 that compares the measurement time data of the calculation setting unit 6 and the timer 5 with the calculation setting data, and if the alarm signal a is continuously output beyond the preset limit time, an emergency signal is detected. It is configured to output a stop signal.

In this case, the speedometer 8 of the ship is connected to the calculation setting section 6, and the signal data of the ship speed is inputted to the calculation setting section 6 of the emergency stop signal output means 4.

This is because the urgency from when the warning signal a is output until the ship stops is related to the ship's speed, so the calculation setting section 6 calculates the ship speed data from the speedometer 8 and the range of the warning signal emitted by the radar 2. This system is configured to perform calculation processing on the data and calculate the limit time according to the speed of the ship.

For example, if the ship's speed is fast, the limit time data to be compared with the output signal of the direct timer 5 is set short, and conversely, if the ship's speed is slow, it is set to a longer time with some margin.

In this case, a whistle as an alarm means 9 is connected to the emergency stop signal output means 4, and the whistle is not sounded in response to the emergency stop signal 1].

IO is an emergency ship stop control means, and is a ship propulsion machine 11.
, for example, is connected to the control device ratio of the propulsion machine 11 comprising an engine, a clutch, a propeller, etc., and when an emergency stop signal is output from the emergency stop signal output means 3, the engine speed is reduced by controlling the governor etc. A CPU that has a control program that controls the clutch lever, clutch cylinder, forward/reverse switching cylinder, etc. to bring the vessel from forward motion to reverse motion and then to an emergency stop state.
It is configured with a control circuit.

This backward movement is performed, for example, by reversing the rotation of the propeller, and by reversing the blades of a variable pitch propeller whose engine speed is constant.

Generally, although there are differences depending on the model, the operations of the propulsion machine 11 can be summarized as starting/stopping, forward/reverse switching, and increasing/decelerating operations.

This operation is remotely controlled from the engine control room, the bridge, etc., and there are four types of control devices 12: mechanical, electro-hydraulic, electro-pneumatic, and all-electric.

This mechanical type is a system that connects a handle located away from the engine to a radiator and governor for forward/reverse switching via a mechanical transmission mechanism such as links, wires, flexible cables, spin wheels, gears, etc. for engine speed control. This system remotely controls the throttle levers, has a simple and reliable mechanism, and is suitable for small vessels.

In addition, electro-hydraulic type means that the system is operated from a control panel located away from the engine through an electric control mechanism such as an electromagnetic hydraulic valve for forward/reverse switching, a hydraulic power-hydraulic drive mechanism such as a hydraulic motor or hydraulic motor for controlling engine speed. This method remotely controls the engine electrically, and although the mechanism is complex, it has good controllability and a large driving force.

In addition, the electric pneumatic type is not installed at a location far from the engine, and is electrically controlled remotely from a control panel via an electric control mechanism such as an electromagnetic air valve, an air cylinder powered by compressed air, or a pneumatic drive mechanism such as an air motor. There is also a method in which the engine-equipped governor motor and starting air solenoid valve group are directly and remotely controlled.

In addition, the all-electric type is a system that is electrically controlled from a control panel located away from the engine via an electric control mechanism such as an electromagnetic clutch and an electric drive input such as an electric motor, and although it is somewhat difficult to adjust, it is easy to control. It is also easy to incorporate automation blocks.

In this way, the control device I2 for the propulsion machine 1 lid is designed according to the type of ship.

This device is equipped with a signal conversion device B that outputs an engine rotation speed reduction signal and a control signal for bringing the ship from forward motion to reverse motion and then to an emergency stop state in accordance with the control devices 12 of these various propulsion machines 11. It is composed of

Since this embodiment has the above-mentioned configuration, when the radar 2 captures an obstacle, the alarm signal output means 1 starts outputting the alarm signal a in step S], and at the same time, the alarm means 3 built in the radar receiver starts to output the alarm signal a. If the warning signal a continues to be output for more than the set limit time without the operator noticing, the warning signal a is issued in steps S2, S3, S4, and S5. Emergency stop signal output means 4
When the emergency stop signal S is outputted, in step S6, the emergency stop control means 10 controls the control device of the propulsion machine 11! 2 is remotely controlled, and the engine rotational speed is reduced, and the ship goes through a forward motion and a reverse motion, and reaches an emergency stop state.The stop state of the propulsion machine 2 is determined in step S7.

In addition, when the emergency stop signal is output, the whistle and siren, which serve as warning means 9, continue to sound to notify the vessel operator of the emergency situation and alert surrounding vessels, thereby preventing secondary disasters such as rear-end collisions.

For this reason, even if the ship operator fails to respond to the warning from the warning means 8, the ship may be automatically stopped.
Accidents such as collisions and boardings can be avoided, and navigation safety can be ensured. The emergency stop control means 10 brings the ship to an emergency stop state by going from a forward motion to an astern motion, and therefore, even if the ship is moving forward at high speed and with a large inertial force, it can be stopped quickly over a short distance. Moreover, if the engine speed of the coffin advancing machine H is high, the speed of the engine of the coffin advancement machine H is reduced and the ship is brought to an emergency stop state by this emergency stop control means IO. Propulsion machine with no-load high-speed rotation 1
This can prevent deterioration and damage to the No. 1 engine and its transmission system, and can also improve safety when the ship is stationary.

Furthermore, "safety" - manual operation is always given priority over the automatic emergency stop operation, and for example, when the power is turned off, the automatic emergency stop operation is automatically canceled and manual operation is possible. .

Also, the alarm signal output means of the embodiment described in -1-! , Emergency ship stop signal output means 4, Emergency ship stop control means! Other configurations may be adopted as appropriate for the configuration of 0, and the design is changed as appropriate.

[Effect of the invention 1] As described above, the present invention can automatically stop a ship even if the operator does not notice the warning, and can avoid collisions, boarding accidents, etc., and improve navigation. In order to ensure the safety of the ship, the emergency stop control means does not simply bring the ship to a halt state automatically, but rather the emergency stop control means causes the ship to proceed through nη forward motion or x, −, p astern motion. Therefore, if the ship was moving forward at high speed and had a large inertial force, C would have to stop quickly in a short distance, which would make it safer. You can increase your sexuality. .

As shown in -1- below, the intended purpose can be fully achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention. Fig. 1 is a block diagram of the configuration, and Fig. 2 is a diagram of its f1' movement.・Alarm signal output means, 4. Emergency ship stop signal output means, 10. Emergency ship stop control means, 11. Propulsion machine, 1
2 control device, 2 (...alarm signal, 1)...emergency stop signal. September 1, 1990

Claims (1)

[Claims] An alarm signal output means that starts outputting an alarm signal when a radar captures an obstacle during navigation of the ship, and an alarm signal output means that starts outputting an alarm signal when a radar captures an obstacle during navigation of the ship, and an alarm signal output means that starts outputting an alarm signal when the radar captures an obstacle while the ship is navigating, and an alarm signal output means that starts outputting an alarm signal when the radar captures an obstacle while the ship is navigating, and when the alarm signal is output continuously beyond a set limit time, the propulsion machine is in danger. an emergency stop signal output means for outputting a stop signal; and an emergency stop control connected to the control device of the propulsion machine, which brings the ship into an emergency stop state from a forward motion to an astern motion once the emergency stop signal is output. What is claimed is: 1. An emergency stop device for a ship, comprising: means.