Programmable Automatic Trim Control System For Marine Applications

Abstract

A programmable automatic trim control system for marine applications preferably includes a controller, a control panel, at least one display device and a plurality of sensors. The controller receives input from the control panel and the plurality of sensors. Each display device shows various data from the controller. Each sensor monitors a single drive device, trim device or operational parameter. The controller further includes output ports connected to the drive devices and trim devices for the control thereof. The trim control system preferably includes a manual mode, a diagnostic mode, a program mode and an automatic mode. The positions and/or settings of the trim and drive devices and operational parameters are set in the program mode and recorded in the controller. Data stored in the controller is accessed and utilized by the trim control system when in the automatic mode.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to marine trim systems and more specifically to a programmable automatic trim control system for marine applications, which allows programming of the trim and drive device controller to achieve optimum or desired performance in an automatic mode.

2. Discussion of the Prior Art

A marine vessel utilizing articulated surface drive(s) requires manual input from the operator to set drive and trim devices to obtain optimum vessel performance. To achieve the goal of optimum performance, manual manipulation of the drive and trim device settings is required during dynamic changes of the vessel. The dynamic changes include acceleration, engine speed, sea state, hull speed, hull inclination and many other factors. Awareness by the operator of all vessel performance characteristics is essential for proper setting of the drive and trim devices. However, constant manual manipulation of the drive and trim device positions deters the operator from the awareness of the surrounding environment.

The prior art includes several patents that disclose monitoring and/or controlling the operation of various trim devices or performance parameters. U.S. Pat. No. 5,263,432 to Davis discloses an automatic trim tab control for power boats. The Davis patent includes adjustment of a power boat's trim tabs, which are automated through all phases of the operation of the boat. The boat's speed and/or revolutions of its engine(s) are sensed.

U.S. Pat. No. 5,385,110 to Bennett et al. discloses a boat trim control and monitor system. The Bennett et al. patent includes a boat trim control system for selectively adjusting the trim tabs to maintain a desired boat attitude under varying load and sea conditions.

U.S. Pat. No. 5,474,012 to Yamada et al. discloses an automatic control for trim tabs. The Yamada et al. patent includes monitoring a marine transportation system to provide an output distinguishing boat operation in an on-plane condition and boat operation in an off-plane condition.

U.S. Pat. No. 5,474,013 to Wittmaier discloses a trim tab auto-retract and multiple switching devices. The Wittmaier patent includes an electro-mechanical control circuit for causing trim tabs attached to the stern of a hull of a motorized marine vessel to be automatically and fully retracted by activating means independent of the boat ignition switch.

U.S. Pat. No. 6,273,771 to Buckley et al. discloses a control system for a marine vessel. The Buckley et al. patent includes a control system for a marine vessel, which incorporates a marine propulsion system that can be attached to a marine vessel and connected in signal communication with a serial communication bus and controller. A plurality of input devices and output devices are also connected in signal communication with the communication bus and a bus access manager.

Accordingly, there is a clearly felt need in the art for a programmable automatic trim control system for marine applications, which allows an operator to program the drive and trim device controller to attain optimum or desired performance in an automatic mode.

SUMMARY OF THE INVENTION

The present invention provides a programmable control system for marine applications, which allows programming of various operational parameters to attain optimum or desired performance of trim and drive devices in an automatic mode. The programmable automatic trim control system for marine applications (trim control system) preferably includes a controller, a control panel, at least one display device and a plurality of sensors. The controller is any suitable microprocessor based controller. The control panel includes a plurality of input actuators, which are connected to the controller. Each display device includes the ability to display instructions concerning operation of the trim control system; and information concerning the drive and trim devices, such as position and diagnostics. Each sensor monitors a single drive device, trim device or operational parameter. Each sensor is connected to an input port of the controller. The controller further includes output ports connected to a propulsion system, the drive devices and trim devices to control thereof.

The trim control system preferably includes a manual mode, a diagnostic mode, a program mode and an automatic mode. The type of mode is selected through an input actuator on the control panel. An operator will place the trim control system in the program mode to manually set and store various operational parameters and positions of the trim and drive devices. The positions are determined by operator preference, and will be based on operational parameters such as throttle position, engine speed, vessel speed, sea conditions, hull inclination, wind and any other suitable parameters, all of which are preferably capable of being monitored on the at least one display device. Operational parameters will automatically be stored by the trim control system whenever drive and trim device positions are stored. The trim control system will record the data in look-up tables. These tables will be accessed by the trim control system when in the automatic mode.

Accordingly, it is an object of the present invention to provide a trim control system, which attains optimum or desired performance for use in the automatic mode by allowing the operator to preprogram drive device and trim device positions, under varying operational conditions.

These and additional objects, advantages, features and benefits of the present invention will become apparent from the following specification.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram of a trim control system in accordance with the present invention.

FIG. 2 is a schematic diagram of marine vessel having an automatic trim control system in accordance with the present invention.

FIG. 3 is a front view of a control panel of a trim control system in accordance with the present invention.

FIG. 4 is a front view of a display device of a trim control system in accordance with the present invention.

FIG. 5 is a flow chart of the data processing between a plurality of sensors, trim devices and drive devices of a trim control system in accordance with the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference to the drawings, and particularly to FIG. 1, there is shown a block diagram of a trim control system 1. With reference to FIG. 2, the trim control system 1 preferably includes a controller 10, a control panel 12, at least one display device 14 and a plurality of sensors 16. The controller 10 is any suitable microprocessor based programmable controller including memory, input ports and output ports.

With reference to FIG. 3, the control panel 12 includes a plurality of input actuators 13, such as a touch pad, push-button switches, toggle switches, rotary switches or any other suitable input actuators. The input actuators are electrically connected to the controller 10. The control panel 12 further preferably includes indicator lights 15, such as mode lights, a power indicator light, and any other suitable indicator lights. However, other control panels with other features may also be used.

With reference to FIG. 4, each display device 14 is preferably a liquid crystal display, but other types of displays may also be used. The display device 14 preferably includes the display of instructions concerning operation of the trim control system 1; information concerning drive devices 20 and trim devices 22, such as position and diagnostics, and information concerning any relevant operational parameters.

The drive devices 20 include at least one prime mover 102, at least one transmission 104, at least one outdrive propulsion system 106, at least one steering actuator 108, at least one drive trim actuator 109, a tie bar 110 (for multiple drive systems) and any other component having a drive function of a marine vessel 100. The prime mover 102 could be an engine, electric motor, gas turbine or any other suitable power source.

The trim devices 22 include trim tabs 112, trim actuators 113, interceptor plates, rocker plates and any other trim device. Each sensor 16 monitors a single drive device 20, trim device 22 or operational parameter 24. Each sensor 16 will detect and transmit the actual position or setting of the drive or trim device. Devices sensing the actual position of the drive and trim devices are well known in the art and need not be explained in detail.

With reference to FIG. 5, a flow chart 30 discloses data processing between a plurality of sensors 16, a plurality of drive devices 20, a plurality of trim devices 22 and a software program in the controller 10. The software program starts by scanning the plurality of sensors 16, actuators of the plurality of drive devices 20 and actuators of the plurality of trim devices 22 in process block 32. Scanning the plurality of sensors 16 provides the position of the plurality of drive and trim devices and relevant operational parameter data. The actuators of the plurality of drive and trim devices are scanned to determine if they are connected to the controller 10. An electrical signal from each of the plurality of sensors 16 is read to determine its validity. The electrical signal is also read to determine drive and trim device positions, and in decision block 34, the actuators of the plurality of drive and trim devices are tested for continuity to determine if they are functional.

If the data from any of the plurality of sensors is invalid, or if any of the actuators are non-functional, then in process block 36, a message is sent to the display device 14 to provide notification to the operator. The trim control system 1 is checked in decision block 38 to see if it is in automatic mode. If the trim control system 1 is not in automatic mode, then the program returns to process block 32. If in decision block 38, the trim control system 1 is in automatic mode, then the program transfers to manual mode in process block 40 and then returns to process block 32. If the data from the plurality of sensors 16 is valid and the actuators are functional, then the program determines whether the drive and trim devices are in the correct position in decision block 42. If the drive and trim devices are in the correct position, then the program returns to process block 32. If the drive and trim devices are not in the correct position, then the trim control system 1 adjusts the drive and trim devices in the correct direction in process block 44. The software program then returns to process block 32.

Operational parameters 24 include vessel speed, engine speed, engine load, hull inclination, sea conditions, wind velocity, wind direction, steering position, and any other performance affecting parameter. Each sensor 16 is connected to an input port of the controller 10. A throttle 114 and a GPS device 116 are also preferably connected to inputs of the controller 10.

The controller 10 further includes output ports connected to the drive devices 20 and the trim devices 22 to control thereof. The controller 10 includes fault detection for input and output ports, when the controller 10 is operational. In automatic or manual modes, the controller 10 will continuously monitor the system for faults. The type of faults monitored include electrical opens, electrical shorts, out-of-tolerance measurements and any other appropriate information.

If a fault is detected or limit exceeded; a warning is generated. The warning may be generated as an advisory message shown on the display device 14. An attempt is also made by the controller 10 to initiate an automatic system reconfiguration to sustain the current mode of operation. In cases where it is inadvisable to continue in the current mode of operation, an automatic reversion to a less capable mode, such as manual mode, may be implemented automatically. The less capable mode may also be made subject to operator approval, as determined for a particular application and dependent on the particular fault detected.

Further, upon power-up of the controller 10, a power-on-self-test may be performed. The power-on-self-test includes a predetermined set of tests executed to confirm the operational status of the controller 10. Normal operations are inhibited, until completion of the power-on-self-test. Normal operations may be inhibited indefinitely, depending on the result of the power-on-self-test.

The trim control system 1 preferably includes a manual mode, a diagnostic mode, a program mode and an automatic mode. The mode is selected through an input actuator on the control panel 12 or the display device 14. When the trim control system 1 is in manual mode, the operator is able to set the positions of the drive devices 20 and trim devices 22 via the manual controls on control panel 12. The trim control system 1 will not intervene in manual mode.

The diagnostic mode is accessed through the control panel 12 or the display device 14 and may be used for troubleshooting and fault detection. Fault detection includes the ability to manually command the test of any of the control system inputs and outputs for faults or out-of-tolerance conditions. Additionally, the diagnostic mode preferably allows the operator to manually manipulate the outputs of the controller 10. Any calibration of input or output signals for the trim or drive device sensors and actuators is to be completed in the diagnostic mode of operation.

When the trim control system 1 is in program mode, input actuators 13 on the control panel 12 will be used to set the positions of the drive devices 20 and trim devices 22. The positions of the drive and trim devices will be based on information from operational parameter sensors 24, such as throttle position, engine speed and vessel speed. The operational parameters 24 are preferably shown on the display device 14 for operator use. When an operator has the drive and trim devices in the desired positions, the positions and corresponding operational parameters may be recorded in memory at operator request via the control panel 12 or display device 14.

Recorded positions and operational parameters are accessed by trim control system 1 automatically, when in the automatic mode. The control system 1 will utilize look-up tables for each input parameter and create a matrix of drive and trim device positions to achieve and maintain optimal and/or desired performance.

For example, a user wants optimal performance based on vessel speed. While in program mode, the operator would systematically adjust the throttle and drive and trim devices positions at various intervals (e.g. (5) total) over the entire throttle range. At each interval, with the parameter in question (of vessel speed) optimized (to the maximum), the operator would command the control system to record the throttle position and drive and trim device positions. The stored positions would then be used, while in automatic mode (by interpolating between the discrete points) to set the drive and trim device positions at points that optimize vessel speed for given throttle positions. In automatic mode, the operator increases the throttle and the drive and trim devices automatically go to optimized positions based on data recorded in look-up tables to provide maximum speed.

Any operational parameter 24 or combination of operational parameters 24 could be used for optimization. For example, the speed optimization may require that data in the look-up tables in the previous example be adjusted based on steering position. In this case, new look-up tables would have to be created to include the operational parameter of steering position. Further, other parameters, such as oil temperature, may also have to be included in the look-up table.

While in automatic mode, the trim control system 1 will automatically position the drive and trim devices, based on previously stored values, when transmission engagement occurs. The trim control system 1 will include unique positions for each direction of engagement.

While in automatic mode, the trim control system 1 will preferably revert to manual mode, when the operator manipulates manual controls on the control panel 12 or a control input/output fault is detected. Additionally, when the control system 1 determines that all of the monitored operational parameters and all control system outputs are in a steady state condition (indicating the drive devices and trim devices are in there optimal positions) for a predetermined amount of time, the system will preferably automatically revert to manual mode. If quiescent conditions exist such that this mode transfer is performed, the operator will be informed via the display device 14.

While particular embodiments of the invention have been shown and described, t will be obvious to those skilled in the art that changes and modifications may be made without departing from the invention in its broader aspects, and therefore, the aim in the appended claims is to cover all such changes and modifications as fall within the true spirit and scope of the invention.

Claims

1. A programmable automatic trim control system for marine applications comprising: a controller having at least one output port and at least one input port;at least one drive device being connected to said at east one output port;at least one trim device being connected to said at least one output port; andsetting the positions of said at least one drive device and at least one trim device according to at least one operational parameter, said positions of said at least one drive device, said at least one trim device and said at least one operational parameter being recorded into memory by said controller for utilization in an automatic mode.

2. The programmable automatic trim control system for marine applications of claim 1, further comprising: said controller positioning said at least one drive and said at least one trim device in an automatic mode based on previously recorded data stored in said memory.

3. The programmable automatic trim control system for marine applications of claim 1, further comprising: at least one drive sensor for sensing the position of said at least one drive device, at least one trim sensor for sensing the position of said at least one trim device.

4. The programmable automatic trim control system for marine applications of claim 1, further comprising: at least one of a control panel and at least one display device or enabling the recording of said positions of said at least one drive device and at least one trim device for said at least one operational parameter into said controller.

5. The programmable automatic trim control system for marine applications of claim 1, further comprising: at least one display device for monitoring said controller.

6. The programmable automatic trim control system for marine applications of claim 1, further comprising: said controller including automatic fault detection monitoring for said at least one input port and said at least one output port.

7. The programmable automatic trim control system for marine applications of claim 1, further comprising: said controller reverting from said automatic mode of operation to a manual mode of operation if a fault is detected or manual controls are manipulated.

8. The programmable automatic trim control system for marine applications of claim 1 further comprising: said controller allowing operator commanded fault detection and manipulation of said at least one drive device and at least one trim device while in a diagnostic mode.

9. The programmable automatic trim control system for marine applications of claim 1, further comprising: at least one operational parameter sensor for sensing at least one operational parameter, said at least one operational parameter sensor being connected to said at least one input port.

10. The programmable automatic trim control system for marine applications of claim 1, further comprising: recording data from said at least one drive device, said at least one trim device, and said at least one operational parameter sensor into at least one look-up table.

11. The programmable automatic trim control system for marine applications of claim 1, further comprising: at least one look-up table being created in conjunction with said at least one operational parameter, said at least one look-up table being reviewed and utilized by said controller in an automatic mode.

12. The programmable automatic trim control system for marine applications of claim 1, further comprising: a first operational parameter being adjusted over at least three different intervals with at least one second additional operational parameter being adjusted at the same drive and trim device positions and values of said first operational parameter, said at least one second operational parameter being recorded.

13. The programmable automatic trim control system for marine applications of claim 12, further comprising: recalling and utilizing drive and trim device positions of said first operational parameter and said at least one second operational parameter in an automatic mode.

14. The programmable automatic trim control system for marine applications of claim 1, further comprising: said controller automatically reverting from said automatic mode to said manual mode after some predetermined amount of time.

15. A programmable automatic trim control system for marine applications comprising: a controller having at least one output port and at least one input port;at least one drive device being connected to said at least one output port;at least one trim device being connected to said at least one output port;setting the positions of said at least one drive device and at least one trim device according to at least one operational parameter, said positions of said at least one drive device and at least one trim device and said at least one operational parameter sensor being recorded into memory by said controller for utilization in an automatic mode; andsaid controller positioning said at least one drive device and at least one trim device in an automatic mode based on previously recorded data stored in said memory.

16. The programmable automatic trim control system for marine applications of claim 15, further comprising: at least one drive sensor for sensing the position of said at least one drive device, at least one trim sensor for sensing the position of said at least one trim device.

17. The programmable automatic trim control system for marine applications of claim 15, further comprising: at least one of a control panel and at least one display device to enable recording of said positions of said at least one drive device and at least one trim device for said at least one operational parameter into said controller.

18. The programmable automatic trim control system for marine applications of claim 15, further comprising: at least one display device for monitoring said controller.

19. The programmable automatic trim control system for marine applications of claim 15, further comprising: said controller including automatic fault detection monitoring for said at least one input port and said at least one output port.

20. The programmable automatic trim control system for marine applications of claim 15, further comprising: at least one look-up table being created in conjunction with said at least one operational parameter, said at least one look-up table being reviewed and utilized by said controller in an automatic mode.

21. The programmable automatic trim control system for marine applications of claim 15, further comprising: said controller automatically reverting from said automatic mode to said manual mode after some predetermined amount of time.

22. A programmable automatic trim control system for marine applications comprising: a controller having at least one output port and at least one input port;at least one drive device being connected to said at least one output port;at least one trim device being connected to said at least one output port; andsetting the positions of said at least one drive device and at least one trim device according to at least one operational parameter, said positions of said at least one drive device and at least one trim device and said at least one operational parameter sensor being recorded into memory by said controller for utilization in an automatic mode; andat least one drive sensor for sensing the position of said at least one drive device, at least one trim sensor for sensing the position of said at least one trim device.

23. The programmable automatic trim control system for marine applications of claim 22, further comprising: said controller positioning said at least one drive device and at least one trim device in an automatic mode based on previously recorded data stored in said memory.

24. The programmable automatic trim control system for marine applications of claim 22, further comprising: at least one of a control panel and at least one display device for enabling the recording of said positions of said at least one drive device and at least one trim device for said at least one operational parameter into said controller.

25. The programmable automatic trim control system for marine applications of claim 22, further comprising: at least one display device for monitoring said controller.

26. The programmable automatic trim control system for marine applications of claim 22, further comprising: said controller including automatic fault detection monitoring for said at least one input port and said at least one output port.

27. The programmable automatic trim control system for marine applications of claim 22, further comprising: said controller allowing operator commanded fault detection and manipulation of said at least one drive and at least one trim device while in a diagnostic mode.

28. The programmable automatic trim control system for marine applications of claim 22, further comprising: said controller automatically reverting from said automatic mode to said manual mode after some predetermined amount of time.