Naval vessel acousto-optic contact system
By designing an audio-optical communication system on the ship, using the combination of RS485 communication line and buzzer/LED lights, the problem of untimely communication in the ship during emergency situations is solved, and simple, convenient and low-cost audio-optical communication is achieved.
Patent Information
- Application Number
- CN202421964277.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-14
AI Technical Summary
In the prior art, in the emergency state, the communication between the cab, emergency control room, left auxiliary cabin and right auxiliary cabin relies on a complex switchboard communication system, which may cause untimely response in emergency situations.
A ship acousto-optical communication system is designed, including a transmitter and receiver installed in the cab, emergency control room, left auxiliary cabin and right auxiliary cabin. Acousto-optical communication is realized through the RS485 communication line, alarm and prompt with buzzer and LED lights, and answering through keys.
It realizes simple and convenient sound-optical communication between the cab, emergency control room, left auxiliary cabin and right auxiliary cabin, improving the response speed and accuracy in emergency situations and reducing costs.
Smart Images

Figure CN222994993U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ship equipment, and particularly relates to an acoustic-optical communication system for a ship Background Art
[0002] During the actual navigation of a ship, in an emergency state, it is necessary to timely send the engine order and rudder order in the cab to the emergency control room, the left auxiliary engine room and the right auxiliary engine room. After receiving the instructions, the emergency control room and the left and right auxiliary engine rooms need to timely send out acoustic-optical alarm signals to remind the crew to perform corresponding operations and treatments on the main engine and auxiliary engines, and then eliminate the acoustic-optical alarm signals by pressing the corresponding keys on the receiver. In the prior art, there is no dedicated acoustic-optical communication system for communicating between the cab, the emergency control room, the left auxiliary engine room and the right auxiliary engine room. The communication between the cab, the emergency control room, the left auxiliary engine room and the right auxiliary engine room needs to rely on a complex switchboard communication system, which is very likely to cause untimely response in an emergency state Content of the Utility Model
[0003] Aiming at the deficiencies of the prior art, the utility model provides an acoustic-optical communication system for a ship, which is specially applied to the acoustic-optical communication between the cab, the emergency control room, the left auxiliary engine room and the right auxiliary engine room, and has the advantages of simple structure, convenient operation and low cost
[0004] To achieve the above technical solution, the present utility model provides a ship sound and light communication system, including: a sound and light communication device transmitter, the sound and light communication device transmitter is installed in the cab, the sound and light communication device transmitter includes a transmitter box body, a transmitter control panel is installed on the transmitter box body, a main engine operation command board and an auxiliary engine operation command board are arranged on the transmitter control panel, a plurality of control buttons are installed on both the main engine operation command board and the auxiliary engine operation command board, a transmitter mute button, a transmitter buzzer, a transmitter dimming button and a transmitter power button are arranged side by side at intervals along the horizontal direction below the main engine operation command board and the auxiliary engine operation command board, a transmitter terminal is installed at the bottom of the transmitter box body, a transmitter control circuit board is installed in the transmitter box body, and the transmitter control circuit board is electrically connected to the transmitter mute button, the transmitter buzzer, the transmitter dimming button, the transmitter power button and the transmitter terminal respectively; an emergency steering room receiver, the emergency steering room receiver is installed in the emergency steering room, the emergency steering room includes an emergency receiver box body, an emergency receiver control panel is installed on the emergency receiver box body, a plurality of control buttons are installed on the emergency receiver control panel, an emergency receiver buzzer and an emergency receiver dimming button are installed at the bottom of the emergency receiver control panel, a plurality of emergency receiver terminals are installed at the bottom of the emergency receiver box body, an emergency receiver control circuit board is installed in the emergency receiver box body, and is electrically connected to the plurality of control buttons installed on the emergency receiver control panel, the emergency receiver buzzer, the emergency receiver dimming button and the emergency receiver terminal; a left auxiliary engine room receiver, the left auxiliary engine room receiver is installed in the left auxiliary engine room, the left auxiliary engine room receiver includes a left auxiliary engine room box body, a left auxiliary engine room control panel is installed on the left auxiliary engine room box body, a plurality of control buttons are installed on the left auxiliary engine room control panel, a left auxiliary engine room buzzer and a left auxiliary engine room dimming button are installed at the bottom of the left auxiliary engine room control panel, a plurality of left auxiliary engine room terminals are installed at the bottom of the left auxiliary engine room box body, a left auxiliary engine room control circuit board is installed in the left auxiliary engine room box body, and is electrically connected to the plurality of control buttons installed on the left auxiliary engine room control panel, the left auxiliary engine room buzzer, the left auxiliary engine room dimming button and the left auxiliary engine room terminal; a right auxiliary engine room receiver, the right auxiliary engine room receiver is installed in the right auxiliary engine room, the right auxiliary engine room receiver includes a right auxiliary engine room box body, a right auxiliary engine room control panel is installed on the right auxiliary engine room box body, a plurality of control buttons are installed on the right auxiliary engine room control panel, a right auxiliary engine room buzzer and a right auxiliary engine room dimming button are installed at the bottom of the right auxiliary engine room control panel, a plurality of right auxiliary engine room terminals are installed at the bottom of the right auxiliary engine room box body, a right auxiliary engine room control circuit board is installed in the right auxiliary engine room box body, and is electrically connected to the plurality of control buttons installed on the right auxiliary engine room control panel, the right auxiliary engine room buzzer, the right auxiliary engine room dimming button and the right auxiliary engine room terminal;The sound and light communication device transmitter is respectively connected to the emergency steering room receiver, the left auxiliary engine room receiver, and the right auxiliary engine room receiver through RS485 communication lines.
[0005] In the above technical solution, during actual operation, when a button on the sound and light communication device transmitter is pressed, the buzzer alarm is immediately activated and the corresponding LED light flashes. At the same time, the key code is sent to the corresponding emergency steering room receiver, left auxiliary engine room receiver, or right auxiliary engine room receiver through the RS485 communication line. After receiving the key code, the emergency steering room receiver, left auxiliary engine room receiver, or right auxiliary engine room receiver immediately activates the buzzer alarm and makes the corresponding LED light flash, reminding the crew to perform corresponding operations and processing on the main engine and auxiliary engines. When the crew presses the button corresponding to the flashing LED light on the receiver to respond, the buzzer stops sounding and the LED light changes from flashing to steady light. At the same time, the response key code is sent to the sound and light communication device transmitter, and after receiving it, the sound and light communication device transmitter also immediately makes the buzzer stop sounding and the LED light changes from flashing to steady light.
[0006] Preferably, a plurality of shock absorbers are installed on the back sides of the transmitter box, the emergency receiver box, the left auxiliary engine room box, and the right auxiliary engine room box. By installing the shock absorbers, the vibration of the transmitter box, the emergency receiver box, the left auxiliary engine room box, and the right auxiliary engine room box during navigation or when the buzzer sounds can be reduced, improving the stability of the system.
[0007] Preferably, the main engine operation command board provided on the transmitter control panel is provided with acceleration, distance increasing, deceleration, distance decreasing, left turn, right turn, center return, standby engine, stop engine, standby, and standby buttons. The auxiliary engine operation command board is provided with left engine start, right engine start, left engine standby, right engine standby, left engine stop, right engine stop, parallel operation, disconnection, standby, and standby buttons. During the actual operation process, the operator can press the corresponding buttons according to the actual situation to send signals.
[0008] Preferably, the emergency receiver control panel is provided with acceleration, distance increasing, deceleration, distance decreasing, left turn, right turn, center return, standby engine, stop engine, standby, and standby buttons. During the actual operation process, the operator can press the corresponding buttons according to the actual situation to respond to signals.
[0009] Preferably, the left auxiliary engine room control panel is provided with left engine start, right engine start, left engine standby, right engine standby, left engine stop, right engine stop, parallel operation, disconnection, standby, and standby buttons. During the actual operation process, the operator can press the corresponding buttons according to the actual situation to respond to signals.
[0010] Preferably, the right auxiliary engine room control panel is provided with buttons for starting the left engine, starting the right engine, preparing the left engine for standby, preparing the right engine for standby, stopping the left engine, stopping the right engine, paralleling, disconnecting, standby, and on standby. During actual operation, the operator can press the corresponding button according to the actual situation to respond to the signal.
[0011] The beneficial effects of a ship's acoustic and optical communication system provided by the present utility model are as follows: The ship's acoustic and optical communication system has a simple structure and a high degree of integration. It is specifically applied to the acoustic and optical communication between the cab, the emergency control room, the left auxiliary engine room, and the right auxiliary engine room. It is convenient to operate and use, and has a low cost. During actual work, when a button on the acoustic and optical communication device transmitter is pressed, the buzzer immediately sounds an alarm and the corresponding LED light flashes. At the same time, the key code is sent to the corresponding emergency steering room receiver, left auxiliary engine room receiver, or right auxiliary engine room receiver through the RS485 communication line. After receiving the key code, the emergency steering room receiver, left auxiliary engine room receiver, or right auxiliary engine room receiver immediately sounds the buzzer alarm and makes the corresponding LED light flash, reminding the crew to perform corresponding operations and processing on the main engine and auxiliary engine. When the crew presses the button corresponding to the flashing LED light on the receiver to respond, the buzzer stops sounding and the LED light changes from flashing to steady light. At the same time, the key code of the response is sent to the acoustic and optical communication device transmitter. After receiving it, the acoustic and optical communication device transmitter also immediately stops the buzzer from sounding and the LED light changes from flashing to steady light. Brief Description of the Drawings
[0012] Figure 1 It is a schematic circuit connection diagram of the present utility model.
[0013] Figure 2 It is a front view of the acoustic and optical communication device transmitter in the present utility model.
[0014] Figure 3 It is a side view of the acoustic and optical communication device transmitter in the present utility model.
[0015] Figure 4 It is a working circuit diagram of the acoustic and optical communication device transmitter in the present utility model.
[0016] Figure 5 It is a front view of the emergency steering room receiver in the present utility model.
[0017] Figure 6 It is a working circuit diagram of the emergency steering room receiver in the present utility model.
[0018] Figure 7 It is a front view of the left auxiliary engine room receiver in the present utility model.
[0019] Figure 8 It is a working circuit diagram of the left auxiliary engine room receiver in the present utility model.
[0020] Figure 9 This is the front view of the receiver in the right auxiliary engine room of the present utility model.
[0021] Figure 10 This is the working circuit diagram of the receiver in the right auxiliary engine room of the present utility model.
[0022] In the figure: 1. Acoustic-optical communication device transmitter; 11. Transmitter box body; 12. Transmitter control panel; 13. Main engine operation command board; 14. Auxiliary engine operation command board; 15. Transmitter silencing button; 16. Transmitter buzzer; 17. Transmitter dimming button; 18. Transmitter power button; 19. Transmitter terminal; 110. Transmitter grounding terminal; 111. Shock absorber; 112. First transmitter control circuit board; 113. Second transmitter control circuit board; 2. Emergency steering room receiver; 21. Emergency receiver box body; 22. Emergency receiver control panel; 23. Emergency receiver buzzer; 24. Emergency receiver dimming button; 25. Emergency receiver terminal; 26. Emergency receiver control circuit board; 3. Left auxiliary engine room receiver; 31. Left auxiliary engine room box body; 32. Left auxiliary engine room control panel; 33. Left auxiliary engine room buzzer; 34. Left auxiliary engine room dimming button; 35. Left auxiliary engine room terminal; 36. Left auxiliary engine room control circuit board; 4. Right auxiliary engine room receiver; 41. Right auxiliary engine room box body; 42. Right auxiliary engine room control panel; 43. Right auxiliary engine room buzzer; 44. Right auxiliary engine room dimming button; 45. Right auxiliary engine room terminal; 46. Right auxiliary engine room control circuit board. Specific embodiments
[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0024] Embodiment: An acoustic-optical communication system for a naval vessel.
[0025] Refer to Figures 1 to 10 As shown, an acoustic-optical communication system for a naval vessel includes:
[0026] An acoustic-optic communication device transmitter 1, the acoustic-optic communication device transmitter 1 is installed in the cab. The acoustic-optic communication device transmitter 1 includes a transmitter box body 11. A transmitter control panel 12 is installed on the transmitter box body 11. A main engine operation command board 13 and an auxiliary engine operation command board 14 are arranged on the transmitter control panel 12. An acceleration button, a distance increasing button, a deceleration button, a distance decreasing button, a left turn button, a right turn button, a center return button, a standby button, a stop button, a spare button and a standby button are arranged on the main engine operation command board 13. A left engine start button, a right engine start button, a left engine standby button, a right engine standby button, a left engine stop button, a right engine stop button, a paralleling button, a disconnection button, a spare button and a standby button are arranged on the auxiliary engine operation command board 14. During the actual operation process, the operator can press the corresponding button according to the actual situation to send out signals. Below the main engine operation command board 13 and the auxiliary engine operation command board 14, a transmitter mute button 15, a transmitter buzzer 16, a transmitter dimming button 17 and a transmitter power button 18 are arranged side by side at intervals horizontally. A transmitter terminal 19 is installed at the bottom of the transmitter box body 11. A first transmitter control circuit board 112 and a second transmitter control circuit board 113 are installed in the transmitter box body 11. The first transmitter control circuit board 112 and the second transmitter control circuit board 113 are respectively electrically connected to each control button installed on the main engine operation command board 13 and the auxiliary engine operation command board 14, the transmitter mute button 15, the transmitter buzzer 16, the transmitter dimming button 17, the transmitter power button 18 and the transmitter terminal 19. The acoustic-optic communication device transmitter 1 is installed in the cab and is used for sending out operation signals.
[0027] An emergency steering room receiver 2, the emergency steering room receiver 2 is installed in the emergency steering room. The emergency steering room includes an emergency receiver box body 21. An emergency receiver control panel 22 is installed on the emergency receiver box body 21. An acceleration button, a distance increasing button, a deceleration button, a distance decreasing button, a left turn button, a right turn button, a center return button, a standby button, a stop button, a spare button and a standby button are arranged on the emergency receiver control panel 22. During the actual operation process, the operator can press the corresponding button according to the actual situation to respond to the signals. An emergency receiver buzzer 23 and an emergency receiver dimming button 24 are installed at the bottom of the emergency receiver control panel 22. A plurality of emergency receiver terminals 25 are installed at the bottom of the emergency receiver box body 21. An emergency receiver control circuit board 26 is installed in the emergency receiver box body 21 and is electrically connected to a plurality of control buttons installed on the emergency receiver control panel 22, the emergency receiver buzzer 23, the emergency receiver dimming button 24 and the emergency receiver terminals 25. The emergency receiver control circuit board 26 is connected to the first transmitter control circuit board 112 through an RS485 communication line. During actual work, the emergency receiver control circuit board 26 is used for receiving instructions such as acceleration, distance increasing, deceleration, distance decreasing, left turn, right turn, center return, standby, stop, spare and standby sent on the main engine operation command board 13.
[0028] A left auxiliary engine room receiver 3, which is installed in the left auxiliary engine room. The left auxiliary engine room receiver 3 includes a left auxiliary engine room box body 31. A left auxiliary engine room control panel 32 is installed on the left auxiliary engine room box body 31. The left auxiliary engine room control panel 32 is provided with buttons for left engine start, right engine start, left engine standby, right engine standby, left engine stop, right engine stop, paralleling, disconnection, standby, and standby. During the actual operation process, the operator can press the corresponding button according to the actual situation to respond to the signal. A left auxiliary engine room buzzer 33 and a left auxiliary engine room dimming button 34 are installed at the bottom of the left auxiliary engine room control panel 32. A plurality of left auxiliary engine room terminal blocks 35 are installed at the bottom of the left auxiliary engine room box body 31. The left auxiliary engine room control circuit board 36 is installed in the left auxiliary engine room box body 31 and is electrically connected to a plurality of control buttons, the left auxiliary engine room buzzer 33, the left auxiliary engine room dimming button 34, and the left auxiliary engine room terminal blocks 35 installed on the left auxiliary engine room control panel 32. The left auxiliary engine room control circuit board 36 is connected to the second transmitter control circuit board 113 through an RS485 communication line. During actual operation, the left auxiliary engine room control circuit board 36 is used to receive instructions such as left engine start, right engine start, left engine standby, right engine standby, left engine stop, right engine stop, paralleling, disconnection, standby, and standby sent by the auxiliary engine operation command board 14.
[0029] A right auxiliary engine room receiver 4, which is installed in the right auxiliary engine room. The right auxiliary engine room receiver 4 includes a right auxiliary engine room box body 41. A right auxiliary engine room control panel 42 is installed on the right auxiliary engine room box body 41. The right auxiliary engine room control panel 42 is provided with buttons for left engine start, right engine start, left engine standby, right engine standby, left engine stop, right engine stop, paralleling, disconnection, standby, and standby. During the actual operation process, the operator can press the corresponding button according to the actual situation to respond to the signal. A right auxiliary engine room buzzer 43 and a right auxiliary engine room dimming button 44 are installed at the bottom of the right auxiliary engine room control panel 42. A plurality of right auxiliary engine room terminal blocks 45 are installed at the bottom of the right auxiliary engine room box body 41. The right auxiliary engine room control circuit board 46 is installed in the right auxiliary engine room box body 41 and is electrically connected to a plurality of control buttons, the right auxiliary engine room buzzer 43, the right auxiliary engine room dimming button 44, and the right auxiliary engine room terminal blocks 45 installed on the right auxiliary engine room control panel 42. The right auxiliary engine room control circuit board 46 is connected to the second transmitter control circuit board 113 through an RS485 communication line. During actual operation, the right auxiliary engine room control circuit board 46 is used to receive instructions such as left engine start, right engine start, left engine standby, right engine standby, left engine stop, right engine stop, paralleling, disconnection, standby, and standby sent by the auxiliary engine operation command board 14.
[0030] In this embodiment, four shock absorbers 111 are installed on the back sides of the transmitter box 11, the emergency receiver box 21, the left auxiliary engine room box 31 and the right auxiliary engine room box 41. By installing the shock absorbers 111, the vibrations of the transmitter box 11, the emergency receiver box 21, the left auxiliary engine room box 31 and the right auxiliary engine room box 41 during navigation or when the buzzer sounds can be reduced, improving the stability of the system.
[0031] The acoustic and optical communication system of this ship has a simple structure and a high degree of integration. It is specifically applied to the acoustic and optical communication between the cab, the emergency control room, the left auxiliary engine room and the right auxiliary engine room. It is convenient to operate and use and has a low cost. During actual operation, when any button on the main engine control panel 13 and the auxiliary engine control panel 14 on the acoustic and optical communication device transmitter 1 is pressed, the buzzer alarm is immediately activated and the corresponding LED light flashes. At the same time, the key code is sent to the corresponding emergency steering room receiver 2, left auxiliary engine room receiver 3 or right auxiliary engine room receiver 4 through the RS485 communication line. After receiving the key code, the emergency steering room receiver 2, left auxiliary engine room receiver 3 or right auxiliary engine room receiver 4 immediately activates the buzzer alarm and makes the corresponding LED light flash, reminding the crew to perform corresponding operations and processing on the main engine and the auxiliary engine. When the crew presses the button corresponding to the flashing LED light on the receiver for response, the buzzer stops sounding and the LED light changes from flashing to steady light. At the same time, the response key code is sent to the acoustic and optical communication device transmitter 1. After receiving it, the acoustic and optical communication device transmitter 1 also immediately makes the buzzer stop sounding and the LED light changes from flashing to steady light.
[0032] The above are the preferred embodiments of the present invention, but the present invention should not be limited to the content disclosed in this embodiment and the drawings. Therefore, all equivalent or modified implementations completed without departing from the spirit disclosed by the present invention fall within the protection scope of the present invention.
Claims
1. A ship sound and light communication system, characterized in that include: A sound and light communication device transmitter, the sound and light communication device transmitter is installed in the cab, the sound and light communication device transmitter comprises a transmitter box, a transmitter control panel is installed on the transmitter box, a host machine control command panel and an auxiliary machine control command panel are arranged on the transmitter control panel, a plurality of control buttons are installed on the host machine control command panel and the auxiliary machine control command panel, a transmitter mute button, a transmitter buzzer, a transmitter dimming button and a transmitter power button are arranged side by side and spaced apart in the horizontal direction below the host machine control command panel and the auxiliary machine control command panel, a transmitter terminal is installed at the bottom of the transmitter box, a transmitter control circuit board is installed in the transmitter box, and the transmitter control circuit board is electrically connected to the transmitter mute button, the transmitter buzzer, the transmitter dimming button, the transmitter power button and the transmitter terminal respectively; An emergency steering room receiver, the emergency steering room receiver is installed in the emergency steering room, the emergency steering room comprises an emergency receiver box, an emergency receiver control panel is installed on the emergency receiver box, a plurality of operating buttons are installed on the emergency receiver control panel, an emergency receiver buzzer and an emergency receiver dimming button are installed at the bottom of the emergency receiver control panel, a plurality of emergency receiver terminals are installed at the bottom of the emergency receiver box, an emergency receiver control circuit board is installed in the emergency receiver box, and is electrically connected to the plurality of operating buttons, the emergency receiver buzzer, the emergency receiver dimming button and the emergency receiver terminals installed on the emergency receiver control panel; a left auxiliary engine room receiver, the left auxiliary engine room receiver is installed in the left auxiliary engine room, the left auxiliary engine room receiver comprises a left auxiliary engine room box, a left auxiliary engine room control panel is installed on the left auxiliary engine room box, a plurality of control buttons are installed on the left auxiliary engine room control panel, a left auxiliary engine room buzzer and a left auxiliary engine room dimming button are installed at the bottom of the left auxiliary engine room control panel, a plurality of left auxiliary engine room wiring posts are installed at the bottom of the left auxiliary engine room box, a left auxiliary engine room control circuit board is installed in the left auxiliary engine room box, and is electrically connected to the plurality of control buttons, the left auxiliary engine room buzzer, the left auxiliary engine room dimming button and the left auxiliary engine room wiring posts installed on the left auxiliary engine room control panel; a right auxiliary engine room receiver, the right auxiliary engine room receiver being installed in the right auxiliary engine room, the right auxiliary engine room receiver comprising a right auxiliary engine room box, a right auxiliary engine room control panel being installed on the right auxiliary engine room box, a plurality of control buttons being installed on the right auxiliary engine room control panel, a right auxiliary engine room buzzer and a right auxiliary engine room dimming button being installed at the bottom of the right auxiliary engine room control panel, a plurality of right auxiliary engine room wiring posts being installed at the bottom of the right auxiliary engine room box, a right auxiliary engine room control circuit board being installed in the right auxiliary engine room box, and being electrically connected to a plurality of control buttons, the right auxiliary engine room buzzer, the right auxiliary engine room dimming button and the right auxiliary engine room wiring posts installed on the right auxiliary engine room control panel; The transmitter of the sound and light communication device is connected to the emergency steering room receiver, the left auxiliary engine room receiver, and the right auxiliary engine room receiver respectively through RS485 communication lines.
2. The ship sound and light communication system according to claim 1, characterized in that: A plurality of shock absorbers are installed on the back sides of the transmitter box, the emergency receiver box, the left auxiliary engine room box and the right auxiliary engine room box.
3. The ship sound and light communication system as claimed in claim 1, characterized in that: The host control command panel arranged on the transmitter control panel is provided with buttons for acceleration, increasing distance, decreasing distance, decreasing distance, turning left, turning right, returning to center, preparing the vehicle, stopping, standby and waiting; the auxiliary machine control command panel is provided with buttons for starting the left engine, starting the right engine, preparing the left engine, preparing the right engine, stopping the left engine, stopping the right engine, merging, decoupling, standby and waiting.
4. The ship sound and light communication system as claimed in claim 1, characterized in that: The emergency receiver control panel is provided with buttons for accelerating, increasing the distance, decelerating, decreasing the distance, turning left, turning right, returning to the center, preparing the vehicle, stopping, standby and waiting.
5. The ship sound and light communication system as claimed in claim 1, characterized in that: The left auxiliary engine room control panel is provided with left engine start, right engine start, left engine standby, right engine standby, left engine stop, right engine stop, parallel, decoupling, standby and standby buttons.
6. The ship sound and light communication system as claimed in claim 1, characterized in that: The right auxiliary engine room control panel is provided with buttons for starting the left engine, starting the right engine, preparing the left engine, preparing the right engine, stopping the left engine, stopping the right engine, merging, disconnecting, standby and standby.