JP5128214B2 - Engine rotation control device, ship - Google Patents

Description

  The present invention relates to an apparatus for controlling the rotational state of an engine.

Conventionally, in small boats such as motor boats, the steering device, shift device, etc. and the engine built in the outboard motor, etc., were mechanically connected. In order to improve, it is considered to apply the communication technique described in Patent Documents 1 and 2 and the like. Specifically, an “engine-side control unit” is provided with a remote control unit for remotely operating the engine, and a handle device, a gear box, and the like provided on the remote control unit are provided on the engine side by a signal line such as a wire harness. There is known a ship provided with an engine rotation control device that is connected to an engine-side ECU (Engine Control Unit) and controls an engine speed and the like by remote operation from a remote control unit. In such a ship, when performing so-called trolling, it is necessary to keep the ship sailing so that the tip of the fishing line is located at the point where the fish is located, so that the shift is in the forward (or reverse) gear state and neutral (neutral) ) Navigation is carried out in which the ship is moved forward (or backward) little by little while repeating the state of being in gear (this navigation is referred to as “slow speed navigation” in this specification). When trying to navigate at a slow speed by operating the shift lever, the ship operator switches the remote control shift lever of the operator's seat between the forward (or reverse) position and the neutral (neutral) position in a short cycle of several seconds to several tens of seconds. Since the operation of the operator is complicated, the time for entering the forward (or reverse) gear and the time for entering the neutral gear are programmed in advance, and an operation button is provided on a gauge that displays a predetermined measurement value such as an engine. It is conceivable that a desired program is called by operating this operation button and desired desired low speed navigation is performed under the control of a microcomputer or the like built in the engine side ECU.
Japanese Patent Publication No. 7-22288 Japanese Patent No. 3979049

  Here, since the amount of information to be processed by the engine-side ECU is very large, when the engine speed or the like is controlled by remote operation from the remote control unit, the remote control unit side also serves as a “remote control unit”. The remote control side ECU is provided, the signal input to the remote control unit is processed in the remote control side ECU, and the signal processed by the remote control side ECU is periodically transmitted between the remote control side ECU and the engine side ECU. It is conceivable to distribute the load on the engine side ECU by supplying it to the side ECU. However, in such a case, the timing at which a signal for transmitting that the operation button has been pressed is supplied from the gauge to the remote-control-side ECU, and the timing of periodic communication performed between the remote-control ECU and the engine-side ECU. Or the duration of the signal that conveys that the operation button has been pressed is extremely longer or shorter than the regular signal communication interval between the remote control ECU and the engine ECU. Is likely to occur. For this reason, even when the operation button is pressed, a signal to that effect is not transmitted from the remote control side ECU to the engine side ECU, or even when the operation button is pressed only once, the remote control side ECU transfers to the engine side ECU. It is assumed that the signal is transmitted as if the operation button was continuously pressed a plurality of times. When such a situation occurs, the engine speed cannot be accurately adjusted.

  The present invention has been made in view of such problems, and an engine capable of accurately adjusting the rotational speed of the engine during slow speed navigation while preventing an excessive load on the engine side ECU. It is an object to provide a rotation control device.

  In order to solve such a problem, the invention according to claim 1 outputs a change command signal as a signal for changing the engine speed based on a command input for operating the speed at the time of slow speed navigation. A remote control unit that is provided in a slow speed operation unit and a remote control unit that operates the engine by remote operation, and outputs a rotation speed change signal as a signal for changing the rotation speed of the engine by receiving the change command signal And an engine-side control unit that is provided in the engine and periodically communicates control signals with the remote-control-side control unit at regular intervals and changes the engine speed based on the engine speed change signal. The rotation control device of the remote control side control unit, the rotation speed change signal A signal output means for outputting, and a reset means for resetting the output state of the rotational speed change signal at the signal output means to an initial state, characterized in that a reset request means for operating said reset means.

  According to a second aspect of the present invention, in addition to the configuration according to the first aspect, the engine-side control unit detects the engine speed when detecting whether the engine speed change signal rises or falls. The engine rotation control device according to claim 1, further comprising a rotation speed operation means for performing control to change.

  According to a third aspect of the present invention, in addition to the configuration according to the first or second aspect, the slow speed operation unit is provided in a gauge for displaying a predetermined measurement value of the engine or the like.

  According to a fourth aspect of the present invention, in addition to the configuration according to any one of the first to third aspects, the reset request means is provided in any one of the gauge, the remote control side control unit, and the engine side control unit. It is provided.

  According to a fifth aspect of the present invention, in addition to the configuration according to any one of the first to fourth aspects, the reset request means is provided with a timer for monitoring an output time of the rotation speed change signal, and the reset The requesting means makes a request for the reset when the output time of the rotation speed change signal has passed the predetermined time by counting the timer.

  According to a sixth aspect of the present invention, in addition to the configuration according to any one of the first to fifth aspects, a response signal is sent to the engine-side control unit to notify that the engine speed change signal has been received. Response means is provided, wherein the reset request means operates the reset means after receiving the response signal.

  A seventh aspect of the present invention is a ship, and is characterized in that the engine rotation control device according to any one of the first to sixth aspects is provided.

  According to the first aspect of the present invention, the rotation of the engine is detected by receiving a change command signal as a signal for changing the engine speed supplied from the slow speed operation unit to the remote control unit for operating the engine by remote operation. The remote control side control unit that outputs a rotation speed change signal as a signal for changing the number is provided, and the control signal is periodically exchanged at regular intervals between the remote control side control unit and the engine side control unit. In the configuration that remotely controls the engine speed, etc. by changing the engine speed based on the speed change signal, the engine side control is performed by first performing signal processing during slow speed navigation on the remote control unit side. Unit load balancing can be achieved. Further, the remote control unit includes a signal output means for outputting a rotation speed change signal and a reset means for resetting the output state of the rotation speed change signal in the signal output means to an initial state, and a reset for operating the reset means. By providing the request means, it becomes possible to appropriately adjust the output and reset of the rotation speed change signal according to the timing of periodic control signal communication between the remote control unit and the engine side control unit. As a result, it is possible to accurately adjust the engine speed during slow speed navigation while preventing an excessive load on the engine-side ECU.

  According to the second aspect of the invention, when the engine speed control means of the engine side control unit detects either rising or falling of the rotation speed change signal, the engine speed is controlled to change. Thus, the rotational speed operation means performs control to change the rotational speed of the engine only at the timing when the rotational speed change signal supplied from the remote control unit is changed. Therefore, even when the output time of one change command signal extends over a plurality of regular control signal communication intervals between the remote-control unit and the engine-side control unit, the rotation speed operation means is one. A situation in which the change command signal is recognized as a plurality of change command signals does not occur. Thereby, the rotation speed of the engine at the time of slow speed navigation can be adjusted more accurately.

  According to the third aspect of the present invention, since the slow speed operation unit is provided in a gauge that displays a predetermined measurement value of the engine or the like, the operator of the transportation engine provided with the engine rotation control device can It becomes possible to operate the speed at the time of slow speed navigation while checking the measured value of the engine. Thereby, the rotation speed of the engine at the time of slow speed navigation can be adjusted more accurately.

  According to the invention described in claim 4, by providing the reset request means in any of the gauge, the remote control side control unit, and the engine side control unit, the reset request means is provided in the configuration that can easily communicate with the reset means, The reset means can be reliably activated at the time of activation. Thereby, the rotation speed of the engine at the time of slow speed navigation can be adjusted more accurately.

  According to the fifth aspect of the present invention, the output time of the rotation speed change signal is monitored by the timer, and the reset request means makes a reset request when the output time of the rotation speed change signal has passed a predetermined time by the timer. As a result, the command is input to the slow-speed operation unit by performing control that makes the timer time longer than the communication interval of the control signal periodically between the remote control unit and the engine control unit. Regardless, the situation where the engine speed does not change can be prevented. Thereby, the rotation speed of the engine at the time of slow speed navigation can be adjusted more accurately.

  According to the sixth aspect of the invention, the response means provided in the engine side control unit transmits a response signal notifying that the engine speed change signal has been received, and the reset request means is reset after receiving the response signal. By operating the means, it is possible to make the engine-side control unit receive the rotation speed change signal as a condition for resetting the rotation speed change signal. As a result, it is possible to prevent a situation in which the engine speed does not change despite the input of a command to the slow speed operation unit, and it is possible to more accurately adjust the engine speed during the slow speed navigation.

  According to the seventh aspect of the present invention, in the ship, it is possible to accurately adjust the rotational speed of the engine at the time of slow speed navigation while preventing an excessive load on the engine-side ECU.

  Embodiments of the present invention will be described below.

  1 to 7 show an embodiment of the present invention.

  First, the structure will be described. As shown in FIGS. 1 and 2, the ship of this embodiment has an outboard motor 11 as a “ship propulsion device” attached to the stern of the hull 10. The boat is controlled and controlled by a remote control device 12, a key switch device 13, a handle device 14 and the like as a “remote control unit” arranged at a boat maneuvering seat of the hull 10.

  The remote control operating device 12 includes a remote control side ECU 17 as a “remote control side control unit” in the remote control body 16 and a remote control shift lever 18 for performing a throttle and shift operation. The remote operation of forward, neutral and reverse is performed by the operation, and as shown in FIG. 5, the central position where the remote control shift lever 18 is upright is the neutral position (N), and a predetermined angle on the front side. The position that has been tilted is the forward position (F), and the position that has been tilted to the rear by a predetermined angle is the reverse position (R). The operation speed and angle operation information of the remote control shift lever 18 is detected by a potentiometer (not shown) and transmitted to the remote control ECU 17.

  A signal from the remote-control ECU 17 is transmitted to an engine-side ECU 21 as an “engine-side control unit” of the outboard motor 11, and the engine-side ECU 21 shifts an actuator (not shown) based on the operation amount of the remote control shift lever 18. The shift actuator (not shown) is operated by the shift actuator (not shown) to perform forward, neutral and reverse shift switching. It is like that.

  Further, as shown in FIG. 2, the key switch device 13 is connected to the remote control ECU 17 of the remote control operation device 12. Although not shown, the key switch device 13 is provided with a start switch and a main / stop switch.

  Further, the handle device 14 includes a handle-side ECU (not shown) and a handle 27 for steering, and the position of the handle is detected by a position sensor. It is connected to the handle side ECU via a circuit.

  The handle side ECU of the handle device 14 is connected to the engine side ECU 21 of the remote controller 12 via a DBWCAN cable as a signal line. Here, DBW refers to a control device that performs drive-by-wire, mechanical connection, and electrical connection, and CAN is an abbreviation for Controller Area Network.

  In addition, the code | symbol 28 in FIG. 2 is a gauge. The gauge 28 is provided with display devices such as various meters and LEDs to display predetermined measurement values of the engine 30 and the like, and a slow speed operation unit 281 shown in the functional block diagram of FIG. The slow speed operation unit 281 is provided with a means for inputting a command by manual operation of the ship operator. In this embodiment, a push type button (not shown) is provided on the surface side of the gauge 28 as the slow speed operation unit 281. When the button is pushed, a change command signal as a signal for changing the rotation speed of the engine 30 is output. In this embodiment, every time the button is pushed, the change command signal is output in such a manner that the selection of the control program at the slow speed navigation stored in the ROM (not shown) of the engine side ECU 21 is switched (specifically). Will be described later).

  On the other hand, the outboard motor 11 is provided with an engine 30 at the top, and the output of the engine 30 is transmitted via a drive shaft 31 and a shift device 32 to a propeller shaft 34 to which a propeller 33 is fixed. Has been.

  The shift device 32 performs forward, neutral and reverse shift switching by the shift switching device (not shown), and the shift switching device (not shown) is driven by the shift actuator (not shown). It is like that.

  FIG. 3 is a hardware configuration diagram of the remote-control-side ECU 17. As shown in the figure, the remote-control ECU 17 includes two microcomputers, a sub-microcomputer 100 and a main microcomputer 200, and has a mechanism for performing distributed processing according to the content of processing. The sub-microcomputer 100 includes at least one CPU (Central Processing Unit) 101 that performs arithmetic processing of programs and data, a RAM (Random Access Memory) 102 that functions as a work area of the CPU 101, and a ROM that stores necessary programs and data. (Read Only Memory) 103, interfaces (I / F) 104a and 104b for performing various processes necessary for communication with the gauge 28 and the main microcomputer 200 are provided. The main microcomputer 200 also includes a CPU 201, a RAM 202, a ROM 203, and interfaces (I / F) 204a and 204b having the same configuration and functions as the main microcomputer.

  As a result of the arithmetic processing of the program stored in the hardware logic (not shown) and the ROMs 103 and 203, the remote control side ECU 17 receives the signal as the functional means shown in the functional block diagram of FIG. An output unit 171, a reset unit 172 as “reset unit”, a reset request unit 173 as “reset request unit”, a timer 174 provided in the reset request unit 173, and a control signal communication unit 175 are provided.

  The signal output unit 171 receives a change command signal from the slow speed operation unit 281 of the gauge 28 and outputs a rotation speed change signal as a signal for changing the rotation speed of the engine 30. This rotation speed change signal is formed as a binary value as shown in the image of FIG. 6 (see the chart of “Received rotation speed change signal”). In FIG. 6, the signal value is set to a low level (value is 0) during normal times, and the signal value is set to a high level (value is 1) when output. The rotation speed change signal may be formed with a value larger than two values so as to contain a plurality of information (for example, the rotation speed change signal is formed of a 2-bit signal, the low level is 0, and the high level is 1). However, in order to realize the reset processing based on the rising timing in the rotation speed operation section, which will be described later, the rising from the low level to the high level and the high level to the low level are possible. Only the rise and fall to the level is allowed (for example, in the above example, 0 → 1, 0 → 2, 0 → 3 etc. are allowed, but 1 → 2, 1 → 3 etc. are not allowed). Is desirable.

  The reset unit 172 resets the output state of the rotation speed change signal to the initial state, that is, the state before the signal output unit 171 receives the change command signal. The reset request unit 173 performs processing necessary for operating the reset unit 172 (that is, resetting the rotation speed change signal). The timer 174 has a timekeeping function, and has a function of monitoring the output time of the rotation speed change signal from the signal output unit 171. The control signal communication unit 175 periodically communicates control signals at regular intervals with a control signal communication unit (described later) provided in the engine side ECU 21.

  Although not shown, the engine-side ECU 21 also has at least one CPU, RAM, ROM, and interface. The engine-side ECU 21, like the remote-control ECU 17, functions as shown in the functional block diagram of FIG. 4, that is, a rotation speed operation unit 211 as a “rotation speed operation unit”, a response unit 212 as a “response unit”, a control A signal communication unit 213 is provided.

  The rotation speed operation unit 211 performs control to change the rotation speed of the engine 30 in response to the rotation speed change signal output from the remote-control-side ECU 17. In this embodiment, the control to be changed is performed when the rising speed of the rotation speed change signal is detected (specifically described later), but is performed when the rising speed is detected. Also good. Response unit 212 transmits a response signal for notifying remote control side ECU 17 that the rotation speed change signal has been received. The control signal communication unit 213 periodically communicates control signals with the remote control side ECU 17 at regular intervals.

  Although not shown in FIG. 4, the ROM of the engine side ECU 21 stores a control program in which a plurality of modes of slow speed navigation are tabulated. Specifically, this control program is, for example, mode 1 repeats forward gear 30 seconds and neutral gear 10 seconds, mode 2 repeats forward gear 25 seconds and neutral gear 12 seconds,. (Or reverse) A table in which the repetition time of the time when the gear enters and the time when the neutral gear enters is stored, and a control program of a different mode is selected each time the fine speed operation unit 281 is pushed. The state is considered. Note that the control program is not a table of specific values, but may be a mathematical program for calculating how to repeat the forward (or reverse) gear entry time and the neutral gear entry time.

  Next, the operation of this embodiment will be described.

  FIG. 5 is a flowchart showing a processing procedure of the remote controller side ECU 17 in this embodiment. FIG. 6 is a time chart showing operations and communication states of the gauge 28, the remote controller ECU 17, and the engine side ECU 21 in this embodiment. It is a chart. The processing procedure will be described below based on the flowchart and the time chart.

  First, when a ship operator pushes a button on the slow speed operation unit 281 of the gauge 28 and inputs a command, a change command signal is output from the slow speed operation unit 281 at the command input time t1. When this change command signal is supplied to the remote control side ECU 17 (“Yes” in step S1), the reception state of the change command signal in the remote control side ECU 17 changes from the low level (Lo) to the high level (Hi). When a change in the reception state of the change command signal is detected, the signal output unit 171 outputs a rotation speed change signal, which is periodically transmitted between the control signal communication units 175 and 213 (here, every 100 ms). The control signal is transmitted to the engine-side ECU 21 at the communication time t2 (step S2). At this time, the reception state of the rotation speed change signal received by the engine-side ECU 21 changes from the low level (0) to the high level (1), and the signal reception state at this moment of change (t2) becomes a rising state.

  When detecting the rising of the rotation speed change signal, the rotation speed operation unit 211 recognizes that the rotation speed change signal has been received and performs control to change the rotation speed of the engine 30. Specifically, a control program corresponding to the rotation speed change signal is selected from control programs stored in a ROM (not shown) of the engine-side ECU 21, and the rotation control of the engine 30 is controlled based on the control program. Do.

  Then, at a specific time t3 after the engine-side ECU 21 confirms the reception of the rotation speed change signal, the response unit 212 transmits a response signal informing that the rotation speed change signal has been received. The time from when the engine side ECU 21 receives the rotation speed change signal to when the response unit 212 transmits the response signal is preset in the engine side ECU 21. The remote control ECU 17 receives this response signal at the specific time t3.

  As described above, since the control signal communication units 175 and 213 regularly communicate with each other, the remote control side ECU 17 receives the change command signal at the high level, and the remote control also during the control signal communication time t4. A rotation speed change signal is transmitted from the side ECU 17 to the engine side ECU 21. At this time, the reception state of the rotation speed change signal in the engine-side ECU 21 is maintained at the high level (1). Even if the rotation speed operation unit 211 detects a state in which the high level of the rotation speed change signal is maintained, it does not recognize that the rotation speed change signal has been received.

  After the time t1 when the remote control side ECU 17 receives the change command signal, the timer 174 monitors the output time of the rotation speed change signal, and at time t5 when this output time has passed a preset time set in the timer 174, a reset request is made. The unit 173 makes a request for resetting the rotation speed change signal. When there is a request for resetting and it is confirmed that a response signal (see time t3) has been received, the reset unit 172 resets the output state of the rotation speed change signal in the signal output unit 171 to the initial state (step S3). Specifically, processing for changing the reception state of the change command signal from high level (Hi) to low level (Lo) is performed.

  In the communication time t6 of the periodic control signal between the control signal communication units 175 and 213 after the output state of the rotation speed change signal is reset, the remote control side ECU 17 has the rotation speed change signal as a low level (0) signal. To the engine-side ECU 21. At this time, the reception state of the rotation speed change signal received by the engine-side ECU 21 changes from the high level (1) to the low level (0), and the signal reception state at this changing moment (time t6) becomes a rising and falling state. . Even if the rotation speed operation unit 211 detects this rising and falling state, it does not recognize that the rotation speed change signal has been received.

  It should be noted that the rotational speed operation unit 211 also operates at the rotational speed operation unit 211 during the periodic control signal communication time t7 between the control signal communication units 175 and 213 when the rotational speed change signal remains in the low level (0) state. It is not recognized that a change signal has been received.

  The above processing procedure is not performed unless the change command signal is supplied to the remote-control-side ECU 17 (“No” in step S1). And the procedure shown to step S1-S3 is repeatedly performed until the drive of the engine 30 stops (step S4).

  Here, consider the reset time t5 in step S3, that is, the setting of the time to be monitored by the timer 174. FIG. 7 is a time chart showing the operation and communication state in the remote-control-side ECU 17 and shows a series of processes from the input of the change command signal to the reset. In the figure, the upper time chart is the processing routine of the sub-microcomputer 100 forming the remote-control-side ECU 17, the middle time chart is the processing routine of the main microcomputer 200, and the lower chart is the regular interval between the control signal communication units 175 and 213. In the chart of the processing routine of the sub-microcomputer 100 and the chart of the processing routine of the main microcomputer 200, one scale indicates the routine processing unit (5 msec).

  As shown in FIG. 3, when a change command signal (high level (Hi)) is input to the remote control side ECU 17 from the slow speed operation unit 281 of the gauge 28, the change command signal is input to the sub-microcomputer 100 from the interface 104a. . As shown in FIG. 7, the sub-microcomputer 100 requires one routine for the input change command signal to be read into the RAM 102. When the reading of the change command signal in the RAM 102 of the sub-microcomputer 100 is completed, the change command signal is transmitted from the sub-microcomputer 100 to the main microcomputer 200 via the interfaces 104b and 204b as shown in FIG. As shown in FIG. 7, the main microcomputer 200 also requires one routine for the change command signal to be read into the RAM 202. When reading of the change command signal into the RAM 202 is completed in the main microcomputer 200, the CPU 201 of the main microcomputer 200 generates a rotation speed change signal based on the program stored in the ROM 203, and this rotation speed change signal is sent from the interface 204a to the engine side. It transmits to ECU21.

  On the other hand, when there is an operation request from the reset request unit 173 to the reset unit 172 and the reset unit 172 operates to generate a reset processing command, as shown in FIG. Specifically, one routine is required for the RAM 102 to read the change command signal from the high level (Hi) to the low level (Lo). When reading of the reset process into the RAM 102 is completed in the sub-microcomputer 100, a reset process command is transmitted from the sub-microcomputer 100 to the main microcomputer 200 as shown in FIG. 3, and the main microcomputer 200 performs one routine as shown in FIG. In short, the reset process is read into the RAM 202. When reading of the reset process into the RAM 202 is completed, the rotation speed change signal is reset from the high level (1) to the low level (0), and the communication time of the periodic control signal between the next control signal communication units 175 and 213 is reached. , The rotation speed change signal is transmitted from the remote control side ECU 17 to the engine side ECU 21 as a low level (0) signal.

That is, in this embodiment, in addition to the duration of the change command signal and the rotation speed change signal itself,
(Time α) Time from when the remote control ECU 17 receives the change command signal until the RAM 102 of the sub-microcomputer 100 starts reading the change command signal (less than one routine),
(Time β) Time when the change command signal is read in the RAM 102 of the sub-microcomputer 100 (one routine)
(Time γ) Time until reset command is sent from the sub-microcomputer 100 to the main microcomputer 200 and the RAM 202 of the main microcomputer 200 starts reading (less than one routine)
(Time Δ) Time when the reset process is read in the RAM 202 of the main microcomputer 200 (one routine)
Need to be considered. If the duration of the change command signal and the control signal communication time between the control signal communication units 175 and 213 are made to coincide with each other, the time lag is caused by the above (time α) to (time Δ). In addition, the rotation speed change signal cannot be correctly transmitted to the engine-side ECU 21 due to periodic control signal communication between the control signal communication units 175 and 213, and the operator pushes the button of the slow speed operation unit 281. There is a risk that the engine speed will not change. That is, the period from the time t1 when the remote control side ECU 17 receives the change command signal to the time t5 until the reset request unit 173 requests the reset of the rotation speed change signal is regular between the control signal communication units 175 and 213 Control signal communication (100 msec) + time α (less than 5 msec) + time β (5 msec) + time γ (less than 5 msec) + time Δ (5 msec) (A)
When it is below, the above situation may occur.

  In order to prevent such a situation from occurring, in this embodiment, a request for resetting the rotation speed change signal is sent to the reset request unit 173 from the time t1 set in the timer 174 when the remote control ECU 17 receives the change command signal. The time until the time t5 is set to 120 msec or more, which is the time exceeding the above (A). As a result, it is possible to prevent a situation in which the engine speed does not change even though the boat operator pushes the button of the slow speed operation unit 281.

  As described above, in this embodiment, the remote controller operating device 12 that operates the engine 30 by remote operation is provided with the remote controller ECU 17 that outputs the rotation speed change signal by receiving the change command signal supplied from the slow speed operation unit 281. The control signal communication unit 175 of the remote control side ECU 17 and the control signal communication unit 213 of the engine side ECU 21 regularly communicate control signals at regular intervals, and the rotation speed operation unit 211 of the engine side ECU 21 rotates the control unit. In the configuration in which the rotational speed of the engine 30 is remotely controlled by changing the rotational speed of the engine 30 based on the number change signal, signal processing at the time of slow speed navigation is first performed on the remote-control-side ECU 17 side so that the engine-side ECU 21 Load distribution can be achieved. In addition, the remote control side ECU 17 includes a signal output unit 171 that outputs a rotation speed change signal, and a reset unit 172 that resets the output state of the rotation speed change signal in the signal output unit 171 to an initial state, and further includes a reset unit 172. By providing the reset request unit 173 to be operated, it is possible to appropriately adjust the output and reset of the rotation speed change signal in accordance with the timing of periodic control signal communication between the remote control ECU 17 and the engine ECU 21. .

  According to this embodiment, the rotation speed operation unit 211 of the engine-side ECU 21 performs control to change the rotation speed of the engine 30 when the rising speed of the rotation speed change signal is detected. Control is performed to change the rotational speed of the engine 30 only at the timing when the rotational speed change signal supplied from the remote control side ECU 17 changes. Therefore, even when the output time of one change command signal extends over a plurality of intervals of communication intervals of periodic control signals between the remote control side ECU 17 and the engine side ECU 21, the rotation speed operation unit 211 changes one change. A situation in which the command signal is recognized as a plurality of change command signals does not occur.

  According to this embodiment, the slow speed operation unit 281 is provided in the gauge 28 that displays a predetermined measurement value of the engine 30 or the like, so that the ship operator (ship operator) according to this embodiment can operate the engine 30. It is possible to control the speed during slow sailing while checking the measured values of

  According to this embodiment, by providing the reset request unit 173 in the remote control side control unit 17, the reset request unit 173 is provided in a configuration in which communication with the reset unit 172 can be easily performed, and the reset unit 172 is set at the time of operation. It can be operated reliably.

  According to this embodiment, the output time of the rotation speed change signal is monitored by the timer 174, and the reset request unit 173 makes a reset request when the output time of the rotation speed change signal has elapsed for a fixed time by the time count of the timer 174. As a result, the control is performed such that the time measured by the timer 174 is longer than the communication interval of the control signal between the remote control side ECU 17 and the engine side ECU 21, so that the command is input to the slow speed operation unit 281. Nevertheless, it is possible to prevent a situation in which the rotation speed of the engine 30 does not change.

  According to this embodiment, the response unit 212 provided in the engine side ECU 21 transmits a response signal notifying that the engine speed change signal has been received, and the reset request unit 173 receives the response signal and then resets the unit 172. , The engine-side ECU 21 can receive the rotation speed change signal as a condition for resetting the rotation speed change signal. As a result, it is possible to prevent a situation in which the rotational speed of the engine 30 does not change even though a command is input to the slow speed operation unit 281.

  In the above embodiment, the outboard motor 11 is applied to the “ship propulsion device”. However, the present invention is not limited to this, and an outboard motor may be used.

  In the above embodiment, the slow speed operation unit 281 is provided in the gauge 28, but is not limited to this. For example, a part of the configuration of the remote control device 12 of the handle device 14 and the remote control shift lever 18 or the ship “Slow speed operation means” may be provided in a part of the outer unit 11.

  In the above-described embodiment, the reset request unit 173 is provided in the remote-control-side ECU 17. However, the present invention is not limited to this, and a reset request unit may be provided in the gauge 28 and the engine-side ECU 21. The reset requesting unit may be provided in any configuration that can easily communicate with the resetting unit 172, and the resetting unit 172 can be reliably operated at the time of operation.

  In the above-described embodiment, the engine-side ECU 21 is provided with the response unit 212, and the condition for resetting the rotation speed change signal includes the reception response of the rotation speed change signal from the response unit 212 to the remote control side ECU 17 side. The response unit 212 may not be provided, and the process for speeding up the processing may be simplified and speeded up without including the response to the rotation speed change signal from the response section 212 to the remote control ECU 17 in the reset condition of the rotation speed change signal. .

  In the above embodiment, the engine rotation control device is applied to a ship, but is not limited to this, and can be applied to any engine equipped with an engine as an internal combustion engine, such as an automobile, an aircraft, a locomotive, and a generator. It is.

  The above embodiment is an exemplification, and it is needless to say that the present invention is not limited to the above embodiment.

It is a side view of the ship concerning an embodiment of this invention. It is a block diagram which shows the connection state of the remote control operating device of a ship, outboard motor, etc. which concern on the embodiment. It is a block diagram which shows the hardware constitutions of remote control side ECU in the ship which concerns on the embodiment. It is a functional block diagram of the gauge, remote control side ECU, and engine side ECU in the ship which concerns on the embodiment. It is a flowchart which shows the procedure of the process of remote control ECU in the ship which concerns on the embodiment. It is a time chart which shows the operation | movement of the gauge in the ship which concerns on the embodiment, remote control side ECU, and engine side ECU, and the state of communication. It is a time chart which shows the operation | movement of the remote control side ECU in the ship which concerns on the same embodiment, and the state of communication.

Explanation of symbols

11 Outboard motor (ship propulsion device)
12 Remote control device (remote control part)
17 Remote control side ECU (Remote control side control unit)
21 Engine side ECU (Engine side control unit)
28 gauge
30 engine
171 Signal output section (Signal output means)
172 Reset section (reset means)
173 Reset request section (reset request means)
174 timer
211 Rotation speed operation unit (Rotation speed operation means)
212 Response unit (response means)
281 Slow operation section

Claims (7)

A slow speed operation unit that outputs a change command signal as a signal for changing the engine speed based on a command that is input to operate the speed during slow speed navigation, and a remote control unit that remotely operates the engine A remote control unit for outputting a rotation speed change signal as a signal for changing the rotation speed of the engine by receiving the change command signal; and a remote control side control unit provided in the engine at regular intervals. An engine rotation control device comprising an engine-side control unit that periodically communicates a control signal and changes the engine speed based on the engine speed change signal,
The remote control side control unit includes signal output means for outputting the rotation speed change signal, and reset means for resetting the output state of the rotation speed change signal in the signal output means to an initial state,
An engine rotation control device comprising a reset request means for operating the reset means.   The engine-side control unit is provided with a rotation speed operation means that performs control to change the rotation speed of the engine when detecting either rising or falling of the rotation speed change signal. The engine rotation control device according to claim 1.   3. The engine rotation control device according to claim 1, wherein the slow speed operation unit is provided in a gauge that displays a predetermined measurement value of the engine or the like. The reset request means, the gauge, the remote control control unit, the rotation control device for an engine according to claim 1乃optimum 3, characterized in that provided on one of the engine-side control unit .   The reset request means is provided with a timer for monitoring the output time of the rotation speed change signal, and the reset request means is configured to reset the reset signal when the output time of the rotation speed change signal elapses for the predetermined time. The engine rotation control device according to any one of claims 1 to 4, wherein a request is made.   The engine-side control unit is provided with response means for transmitting a response signal notifying that the engine speed change signal has been received, and the reset request means operates the reset means after receiving the response signal. The engine rotation control device according to any one of claims 1 to 5.   A ship provided with the engine rotation control device according to any one of claims 1 to 6.

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