Intelligent protection system for obstacle avoidance of outboard engine

Abstract

The utility model discloses an intelligent protection system for obstacle avoidance of an outboard engine, which comprises an ECU (Electronic Control Unit), an engine rotating speed sensor, a tilting angle sensor and an optional water pressure sensor which are arranged in the outboard engine, and a control handle which is arranged outside the outboard engine and is arranged on a prow, the control handle comprises a throttle handle and a tilting button; the ECU monitors the rotating speed of the engine and the upwarp angle signal of the outboard engine in real time through the engine rotating speed sensor and the upwarp angle sensor, judges the relation between the upwarp position of the outboard engine and the water surface and automatically adjusts the rotating speed of the engine of the outboard engine and the upwarp angle of the outboard engine. According to the utility model, the calculation and control capabilities of the ECU of the outboard engine are exerted, outboard engine state signals such as the upwarp angle, the rotating speed and the water pressure are monitored in real time, the relationship between the upwarp position of the outboard engine and the water surface is intelligently judged, the upwarp angle and the rotating speed of the outboard engine are automatically adjusted, the safety of passengers and the outboard engine is intelligently protected in real time, and the safety of the outboard engine is improved. And workload of a driver and human errors are reduced.

Description

Technical Field

[0001] The utility model relates to the field of outboard motors, in particular to an intelligent protection system for outboard motors to avoid obstacles. Background Art

[0002] When the boat is sailing on the water, the driver pays close attention to the water surface and takes safety precautions. When sailing near the shore or in shallow water, if there are obstacles such as fishing nets and reefs in front of the boat, the driver will actively reduce the speed and use the tilt button on the steering handle to control the outboard engine to tilt, so as to prevent the outboard engine underwater device and propeller from hitting obstacles, such as Figure 1 As shown. During the voyage, a sudden adjustment of the outboard motor's pitch angle may cause the bow to tilt, the boat's attitude to lose control, and passengers to fall or even fall into the water; if the outboard motor's pitch position is too high, the propeller is above the water surface, which will cause the propeller and engine to suddenly unload, the speed to soar, triggering the overspeed protection and causing the engine to shut down; if the water intake at the bottom of the outboard motor is higher than the water surface, the cooling water supply will be interrupted, and the engine will shut down due to overheating protection. In short, the difficulty and safety risk of outboard motor obstacle avoidance are high, and it is heavily dependent on the driver's skills, experience and concentration.

[0003] The current outboard motor obstacle avoidance is generally controlled by the driver manually to adjust the pitch angle and speed, and the ECU does not monitor or limit it. During the operation, the driver's slow reaction, insufficient adjustment, excessive adjustment or misjudgment can easily cause damage to the outboard motor or loss of control of the boat's attitude, resulting in personal injury and property loss. The main reason is that it is difficult for the driver to see the actual pitch angle of the outboard motor at the stern at the bow, and the instrument display cannot accurately determine the relative relationship between the pitch position and the water surface. The control accuracy is low, the human factor has a great impact, and the safety risk is high. Utility Model Content

[0004] The purpose of the utility model is to provide an intelligent protection system for outboard motor obstacle avoidance, which can monitor the outboard motor status signals such as the tilting angle, rotation speed, and water pressure in real time by giving full play to the calculation and control capabilities of the outboard motor ECU control unit, intelligently judge the relationship between the outboard motor tilting position and the water surface, automatically adjust the outboard motor tilting angle and rotation speed, intelligently and real-timely protect the safety of passengers and outboard motors, reduce the driver's workload and human errors, and comprehensively improve safety, operational convenience and accuracy.

[0005] The technical solution of the utility model is:

[0006] The intelligent protection system for outboard motor obstacle avoidance includes an ECU control unit built into the outboard motor, an engine speed sensor, a pitch angle sensor, and a control handle installed on the bow of the outboard motor; the control handle includes a throttle handle and a pitch button; the engine speed sensor, the pitch angle sensor, the throttle handle and the pitch button are respectively connected to the ECU control unit;

[0007] When an underwater obstacle is found, the driver presses the tilt button to request to increase the tilt angle of the outboard motor, and the throttle opening of the throttle handle is reduced or remains unchanged, and the ECU control unit responds.

[0008] The ECU control unit monitors the engine speed and the outboard motor pitch angle signal in real time through the engine speed sensor and the pitch angle sensor, determines the relationship between the outboard motor pitch position and the water surface, and automatically adjusts the outboard motor engine speed and the outboard motor pitch angle.

[0009] Preferably, the intelligent protection system for outboard motor obstacle avoidance also includes a water pressure sensor in the outboard motor cooling water circuit, the water pressure sensor is connected to the ECU control unit, and the ECU control unit detects the water pressure changes in the outboard motor cooling water circuit in real time.

[0010] The advantages of the utility model are:

[0011] The utility model utilizes the calculation and control capabilities of the outboard motor ECU control unit to monitor the outboard motor status signals such as the pitch angle, speed, and water pressure in real time, intelligently judges the relationship between the outboard motor pitch position and the water surface, automatically adjusts the outboard motor pitch angle and speed, intelligently and real-time protects the safety of passengers and outboard motors, reduces the driver's workload and human errors, and comprehensively improves safety, operational convenience, and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0013] Figure 1 It is a schematic diagram of controlling the warping of an outboard motor in the prior art;

[0014] Figure 2 It is a schematic diagram of the component distribution of the intelligent protection system for outboard motor obstacle avoidance of the utility model;

[0015] Figure 3 The electrical schematic diagram of the intelligent protection system for outboard motor obstacle avoidance of the utility model;

[0016] Figure 4 A preset relationship curve between engine speed and maximum pitch angle;

[0017] Figure 5 It is the preset relationship curve between water pressure change and engine speed-maximum tilt angle. DETAILED DESCRIPTION

[0018] like Figure 2 , 3As shown, the intelligent protection system for outboard motor obstacle avoidance of the utility model includes an ECU control unit 1 built into the outboard motor, an engine speed sensor 2, a pitch angle sensor 3, and a control handle external to the outboard motor installed on the bow, and also includes a water pressure sensor 4 in the outboard motor cooling water circuit; the control handle includes a throttle handle 5 and a pitch button 6; the engine speed sensor 2, the pitch angle sensor 3, the water pressure sensor 4, the throttle handle 5 and the pitch button 6 are respectively connected to the ECU control unit 1. The water pressure sensor 4 can be optional.

[0019] When an underwater obstacle is found, the driver presses the tilt button 6 to issue a request to increase the tilt angle of the outboard motor, and the throttle opening of the throttle handle 5 is reduced or remains unchanged, and the ECU control unit 1 responds.

[0020] The ECU control unit 1 monitors the engine speed, the outboard motor pitch angle signal and the water pressure change in real time through the engine speed sensor 2, the pitch angle sensor 3 and the water pressure sensor 4, determines the relationship between the outboard motor pitch position and the water surface, and automatically adjusts the outboard motor engine speed and the outboard motor pitch angle.

[0021] The basic control logic of the intelligent protection system for outboard motor obstacle avoidance of the utility model has the following three embodiments, which can be flexibly selected according to system configuration and customer needs.

[0022] The ECU control unit actively adjusts the maximum pitch angle setting value according to the real-time feedback of the outboard motor speed to prevent the propeller and the cooling water inlet from being higher than the water surface during the operation of the outboard motor, thereby protecting the outboard motor and preventing the boat from losing its posture.

[0023] The method for setting the maximum warping angle is: based on the relationship curve between the warping angle and the maximum rotation speed preset in the development stage, such as Figure 4 As shown, the higher the outboard motor speed, the smaller the maximum tilt angle setting value; the lower the outboard motor speed, the larger the maximum tilt angle setting value; when the outboard motor stop speed is zero, the maximum tilt angle setting value is the largest.

[0024] The ECU control unit actively adjusts the maximum speed setting value of the outboard motor according to the real-time feedback of the outboard motor pitch angle, and automatically limits the speed in real time until the outboard motor propeller is above the water surface and the speed is limited to zero or a smaller value.

[0025] The method for setting the maximum speed is: based on the relationship curve between the warping angle and the maximum speed preset in the development stage, such as Figure 4 As shown, the higher the outboard motor pitch angle is, the smaller the maximum starting speed setting value is; the lower the outboard motor pitch angle is, the larger the maximum speed setting value is; when the outboard motor pitch angle is zero, the maximum speed setting value is the largest.

[0026] The intelligent protection system of this embodiment includes a water pressure sensor in the outboard motor cooling water circuit, and the water pressure sensor is connected to the ECU control unit, and the ECU control unit detects the water pressure change in the outboard motor cooling water circuit in real time. The ECU control unit determines the height distance between the outboard motor cooling water inlet and the water surface based on the real-time detected outboard motor tilting angle and the water pressure change in the cooling water circuit; the ECU control unit determines the height distance between the outboard motor cooling water inlet and the water surface based on the feedback water pressure change and the preset relationship curve, such as Figure 5 As shown, limit the maximum tilt angle or maximum speed and ensure that the cooling water inlet is not above the water surface for a long time to protect the outboard motor.

[0027] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any modifications made according to the spirit of the main technical solution of the utility model should be included in the protection scope of the utility model.

Claims

1. Intelligent protection system for outboard motor obstacle avoidance, characterized by: It includes an ECU control unit built into the outboard motor, an engine speed sensor, a pitch angle sensor, and a control handle installed on the bow of the outboard motor; the control handle includes a throttle handle and a pitch button; the engine speed sensor, the pitch angle sensor, the throttle handle and the pitch button are connected to the ECU control unit respectively; When an underwater obstacle is found, the driver presses the tilt button to raise the tilt angle of the outboard engine, and the throttle opening of the throttle handle is reduced or unchanged, and the ECU control unit responds; The ECU control unit monitors the engine speed and the outboard motor pitch angle signal in real time through the engine speed sensor and the pitch angle sensor, determines the relationship between the outboard motor pitch position and the water surface, and automatically adjusts the outboard motor engine speed and the outboard motor pitch angle.

2. The intelligent protection system for outboard motor obstacle avoidance according to claim 1, characterized in that: It also includes a water pressure sensor in the outboard motor cooling water circuit. The water pressure sensor is connected to the ECU control unit. The ECU control unit detects the water pressure change in the outboard motor cooling water circuit in real time.

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