US 20040257201A1
(19) United States
(12) Patent Application Publication (10) Pub. No.: US 2004/0257201 A1
(43) Pub. Date:
Suzuki
(54) ENGINE CONTROL APPARATUS
Dec. 23, 2004
Publication Classi?cation
(75) Inventor: Michiyuki Suzuki, Shizuoka (JP)
(51)
Int. Cl? ........................... ..H04Q 1/00; G05B 19/00
(52)
US. Cl. ........................................ ..340/5.72;340/5.61
Correspondence Address:
(57)
SUGHRUE MION, PLLC
2100 PENNSYLVANIA AVENUE, N.W.
An engine control apparatus includes: a stop sWitch body 6;
SUITE 800
a stop switch knob 3; a lock plate 5; a transponder 9 that is
provided at the lock plate side and that can transmit a
predetermined ID code; and a control section 11 that can
receive the ID code transmitted from the transponder 9 and
that controls based on the ID code the engine operation of
WASHINGTON, DC 20037 (US)
(73) Assignee: ASAHI DENSO CO., LTD.
(21) Appl. No.:
10/791,679
(22) Filed:
Mar. 3, 2004
ABSTRACT
the small motorboat. The engine control apparatus is struc
tured such that, When the lock plate 5 is disengaged from the
stop sWitch knob 3, the stop sWitch body 6 is activated to
alloW the engine to stop or to be in an idling state. The
(30)
engine control apparatus also includes the Writing section 16
Foreign Application Priority Data
for Writing a regular ID code of a transponder to another
Mar. 6, 2003
(JP) ................................. .. P.2003-060294
(2;
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3
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(
)
(
)
(
3
(
D
C
i
C
)
(
i
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i
L
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(
3
transponder.
START 6)
00000
Patent Application Publication Dec. 23, 2004 Sheet 1 0f 11
FIG. 1
US 2004/0257201 A1
Patent Application Publication Dec. 23, 2004 Sheet 2 0f 11
FIG. 2
US 2004/0257201 A1
Patent Application Publication Dec. 23, 2004 Sheet 3 0f 11
FIG. 3
5a
50
FIG. 4
10
10a
US 2004/0257201 A1
Patent Application Publication Dec. 23, 2004 Sheet 4 0f 11
FIG. 5
121
L2
POWER /15
SOURCE
CIRCUIT
RF
MODULE
a
MICRO-
COMPUTER
b
~14
\13
IGNITION APPARATUS
US 2004/0257201 A1
Patent Application Publication Dec. 23, 2004 Sheet 5 0f 11
FIG. 6
16aa
16a
16ab
US 2004/0257201 A1
Patent Application Publication Dec. 23, 2004 Sheet 6 0f 11
US 2004/0257201 A1
FIG. 7
LOCK PLATE IS
INSERTED
S2 N
POWER SOURCE OF
CONTROL SECTION IS ON
COMMUNICATION IS
DETERMINED FOR ENGINE SPECIFICATION
YES
(1)?
COMMUNICATION IS
DETERMINED FOR ENGINE SPECIFICATION
YES
(2)?
COMMUNICATION IS
DETERMINED FOR ENGINE SPECIFICATION
YES
(3)?
COMMUNICATION IS
DETERMINED FOR ENGINE SPECIFICATION
YES
(4)?
COMMUNICATION IS
DETERMINED FOR ENGINE SPECIFICATION
YES
(5)?
PASSWORD IS
VERIFIED?
COMMUNICATION IS
S8 ~
BOAT IS NOT
FAILED AND BOAT IS
S12 "»
PERMITTED
NOT PERMITTED TO RUN
810 N
TO RUN
LED CORRESPONDING TO ENGINE
SPECIFICATION IS FLASHED
I
811
RUNING PERMISSION SIGNAL IS
PROVIDED TO IGNITION APPARATUS
Patent Application Publication Dec. 23, 2004 Sheet 7 0f 11
US 2004/0257201 A1
FIG. 8
S13
WRITING CODE IS
CONNECTED
814M CONTROL SECTION
IS STARTED
I
VOLTAGE OF
POWER SOURCE TERMINAL IS
MONITORED?
S16
AUTH ENTICATED
LOCK PLATE IS
INSERTED
TIME
IS MONITORED
'?
THREE MINUTES
OR LESS
THREE MINUTES PASS
5”
AUTHENTICATION OF
|D CODE |S STARTED
To STAND-BY STATUS ~ 319
Patent Application Publication Dec. 23, 2004 Sheet 8 0f 11
(FIG. 8 CONTINUED)
S20
COMMUNICATION
IS DETERMINED FOR ENGINE
YES
SPECIFICATION (1)
?
COMMUNICATION
IS DETERMINED FOR ENGINE
YES
SPECIFICATION (2)
?
COMMUNICATION
IS DETERMINED FOR ENGINE
YES
SPECIFICATION (3)
?
COMMUNICATION
IS DETERMINED FOR ENGINE
YES
SPECIFICATION (4)
?
COMMUNICATION
IS DETERMINED FOR ENGINE
YES
SPECIFICATION (5)
'2
NO
COMMUNICATION HAS FAILED AND N 825
BOAT IS NOT PERMITTED TO RUN
US 2004/0257201 A1
Patent Application Publication Dec. 23, 2004 Sheet 9 0f 11
US 2004/0257201 A1
FIG. 9
S26
PASSWORD IS VERIFIED?
YES
LED CORRESPONDING TO
ENGINE SPECIFICATION
I
N S27
COMMUNICATING
IS STOPPED
IS FLASHED
VOLTAGE OF
POWER SOURCE TERMINAL IS
MONITORED?
TIME
LO
IS MONITORED
THREE MINUTES
OR LESS
?
THREE MINUTES PASS
LED STOPS FLASHING
LED STOPS FLASHING
AND PROCESS RETURNS
TO STAND-BY STATUS
Patent Application Publication Dec. 23, 2004 Sheet 10 0f 11
(FIG. 9 CONTINUED)
US 2004/0257201 A1
_ ............... "I ...................... .E ................................. .._
S33
LOCK PLATE BEFORE
BEING WRITTEN IS
EXCHANGED
COMMUNICATION
IS DETERMINED FOR ENGINE
YES
SPECIFICATION (1)
?
COMMUNICATION
IS DETERMINED FOR ENGINE
YES
SPECIFICATION (2)
?
COMMUNICATION
IS DETERMINED FOR ENGINE
YES
SPECIFICATION (3)
?
COMMUNICATION
IS DETERMINED FOR ENGINE
YES
SPECIFICATION (4)
?
COMMUNICATION
IS DETERMINED FOR ENGINE
YES
SPECIFICATION (5)
?
NO
COMMUNICATION HAS FAILED ~ S39
Patent Application Publication Dec. 23, 2004 Sheet 11 0f 11
PASSWORD IS
WRITTEN TO TRANSPONDER
US 2004/0257201 A1
S40
TRANSPONDER IS LOCKED TO
PREVENT TRANSPONDER
"\1 S41
FROM BEING WRITTEN AGAIN
COMMUNICATION
IS PROVIDED AGAIN TO VERIFY
PASSWORD?
NO
I
LED CORRESPONDING TO
S44~
ENGINE SPECIFICATION
ENGINE SPECIFICATION IS
IS FLASHED
FLASHED AT DOUBLE SPEED
VOLTAGE OF
POWER SOURCE TERMINAL IS
'7
MONITORED'
S48~ LED STOPS FLASHING
4
ANOTHER LOCK PLATE
BEFORE BEING WRITTEN
IS EXCHANGED
850'»
NEW WRITING
~ 843
HI
TIME
IS MONITORED
L0
S49
LED CORRESPONDING T0
THREE MINUTES
on LESS
?
THREE MINUTES PASS
PROCESS RETURNS
TO STATUS IN WHICH N S47
LED STOPS FLASHING
Dec. 23, 2004
US 2004/0257201 A1
ENGINE CONTROL APPARATUS
SUMMARY OF THE INVENTION
BACKGROUND OF THE INVENTION
[0009] The present invention is made in vieW of the above.
It is an object of the present invention to provide an engine
[0001] The present invention relates to an engine control
apparatus including such that, When a lock plate is disen
gaged from a stop sWitch knob, the stop sWitch is turned on
to alloW an engine of a small motorboat etc., to stop or to be
in an idling state.
[0002]
A small motorboat is made to glide over Water
While taking a sharp turn or jumping so that an operator can
enjoy a ride. This frequently causes the operator to fall into
Water. Due to this reason, it is required to, When the operator
falls into Water, stop the engine to prevent only the small
motorboat from further progressing. Thus, a small motor
boat is generally provided With a stop sWitch for alloWing,
When the operator falls into Water, the engine to stop or to
be in an idling state.
[0003] Speci?cally, a stop sWitch knob for activating the
stop sWitch has an insertable resin-made lock plate that has
at the base end a tightened Wire. The tip end of the Wire is
?xed to the operator’s Wrist or the like. This alloWs, When
the operator falls into Water, the lock plate to be disengaged
from the stop sWitch knob to turn on the stop sWitch, thereby
alloWing the engine of the small motorboat to stop or to be
in an idling state.
[0004] As described above, the lock plate is inserted to the
stop sWitch knob to alloW the engine to start. This causes a
situation Where, When another lock plate of a small motor
boat or a plate member having a similar shape to the lock
plate is inserted, a third party can start the engine With out
the oWner’s permission. In order to prevent such a situation
Where a boat is stolen, a conventional technique (as dis
closed in Patent Document 1, for example) has suggested
that a transponder incorporating an ID code is embedded in
a lock plate and an engine control section is provided in the
vicinity of a stop sWitch.
[0005] The above conventional engine control apparatus is
structured such that the ID code of the transponder is
transmitted via radio transmission to the control section so
control apparatus that alloWs the user to prepare a back-up
transponder easily.
[0010] The present invention according to Aspect 1 is
characteriZed in that: an engine control apparatus, includes:
a stop sWitch body for alloWing an engine to stop or to be in
an idling state; a stop sWitch knob that abuts With the stop
sWitch body to activate the stop sWitch body to alloW the
engine to stop or to be in an idling state; a lock plate that is
insertable to the stop sWitch knob; a transponder that is
provided at the lock plate side and that can transmit a
predetermined ID code; and a control section that can
receive the ID code transmitted from the transponder and
that can control based on the ID code the engine operation,
Wherein the engine control apparatus includes such that,
When the lock plate is disengaged from the stop sWitch knob,
the stop sWitch body is activated to alloW the engine to stop
or to be in an idling state; and the engine control apparatus
includes a Writing section for Writing a regular ID code of a
transponder to another transponder.
[0011] The present invention according to Aspect 1 is
characteriZed in that: the control section changes the engine
performance based on the ID code from the transponder and,
When the Writing section is used to Write the regular ID code
of a transponder to another transponder, a to-be-speci?ed
engine performance can be changed in the engine control
apparatus according to Aspect 1.
[0012] The present invention according to. Aspect 3 is
characteriZed in that a display section is provided for dis
playing the difference in the engine performance speci?ed
for the transponder.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013]
FIG. 1 is a top vieW illustrating the engine control
apparatus for the small motorboat according to an embodi
ment of the present invention.
that the engine is started only When a previously registered
[0014]
regular ID code and the received ID code are the same.
[0015] FIG. 3 is a top vieW illustrating the lock plate and
the attachment of the engine control apparatus for the small
motorboat according to the embodiment of the present
invention.
When the former is different from the latter, the engine is not
started. This can start the small motorboat only When the
regular lock plate is inserted to the stop sWitch knob and thus
can prevent the boat from being stolen.
[0006] [Patent Reference 1]
[0007] Japanese Published Unexamined Patent Applica
tion No. 2001-88789
[0008] HoWever, the above conventional engine control
apparatus causes a situation Where, When a lock plate
incorporating a transponder is lost, a regular ID code having
the transponder is unknoWn and thus a lock plate having
another transponder and a control section must be changed.
In order to prevent such a case, a dealer alWays controls the
regular ID code so that another transponder having the ID
code can be prepared if the lock plate is lost, thus making it
needless to change the control section. HoWever, such a
control by the dealer causes another problem of increased
cost.
FIG. 2 is a right side vieW of FIG. 1.
[0016] FIG. 4 is a front vieW illustrating the attachment of
the engine control apparatus for the small motorboat accord
ing to the embodiment of the present invention.
[0017] FIG. 5 is a block diagram illustrating the control
section and the neighboring structure of the engine control
apparatus for the small motorboat according to the embodi
ment of the present invention.
[0018] FIG. 6 is a schematic diagram illustrating the
Writing code included in the Writing section in the engine
control apparatus for the small motorboat according to the
embodiment of the present invention.
[0019] FIG. 7 is a ?oWchart illustrating the normal opera
tion in the engine control apparatus for the small motorboat
according to the embodiment of the present invention.
Dec. 23, 2004
US 2004/0257201 A1
[0020] FIG. 8 is a ?owchart illustrating the Writing opera
tion in the engine control apparatus for the small motorboat
according to the embodiment of the present invention.
draWing, the reference numeral 8 denotes a circular ring
shaped metal ?tting for inserting the tip end of the Wire 7 to
[0021] FIG. 9 is a ?oWchart illustrating the Writing opera
tion in the engine control apparatus for the small motorboat
according to the embodiment of the present invention.
[0030] The tWo conveX sections 5b formed in the lock
plate 5 have a groove-like shape over the surface of the lock
plate 5 to Which the resin-made attachment 10 incorporating
the transponder 9 can be attached. Speci?cally, the clip
[0022] FIG. 10 is a ?oWchart illustrating the Writing
operation in the engine control apparatus for the small
motorboat according to the embodiment of the present
invention.
the hole 5c.
section 10a forms at the loWer face of this attachment 10 as
shoWn in FIG. 4. The attachment 10 is formed such that,
When the clip section 10a sandWiches the top and back face
of the lock plate 5 (more speci?cally, the space betWeen the
tWo conveX sections 5b), the attachment 10 can be attached.
DETAILED DESCRIPTION OF THE
PREFERRED EMBODIMENTS
[0023] Hereinafter, embodiments of the present invention
[0031]
The transponder 9 is provided at the lock plate 5 to
hold a previously registered regular ID code and can trans
mit the ID code from an antenna (not shoWn) via radio
Will be speci?cally described With reference to the draWings.
transmission. The ID code includes information or a unique
[0024] As shoWn in FIG. 1 and FIG. 2, the engine control
apparatus for the small motorboat according to embodiment
passWord for providing an arbitrary engine performance.
The engine performance information includes, for eXample,
1 is formed in the resin-made sWitch case 1 ?xed to the
handle bar H of the small motorboat. The sWitch case 1
includes the start sWitch knob 2, the stop sWitch knob 3, the
stop sWitch.body 6, and the control section 11. The reference
numeral G in FIG. 1 denotes a grip that is grasped by an
operator When the operator operates the boat.
[0025] The start sWitch knob 2 is used to start the engine
of the small motorboat. The knob includes such that, When
the knob is pushed, then predetermined electrical conduction
may be provided to start the engine. The start sWitch knob
2 can be provided to the sWitch case 1 With an arbitrary
information regarding the engine speci?cation for a race, for
the experienced user (high performance), for a general user
(cruise), for a beginner (course), or for children (run). In this
embodiment, the engine is ?rst alloWed to be in an idling
state When the lock plate 5 is engaged With the stop sWitch
knob 3 to subsequently start the activate sWitch knob 2.
[0032] As shoWn in FIG. 5, the control section 11
includes: the antenna 12, the RF module 13, the microcom
puter 14, and the poWer source circuit 15. The control
section 11 is provided in the vicinity of the stop sWitch body
6 in the sWitch case 1 (see FIG. 1 and FIG. 2). Among these,
[0026] As shoWn in FIG. 2, the stop sWitch knob 3 is
the antenna 12 receives an ID code from the transponder 9
and has a coil-like shape and is connected via the Rf module
13 to the microcomputer 14. The control section 11 is
alWays biased by the spring 4 toWard the direction adjacent
electrically connected to the engine ignition apparatus 17
to the surface of the sWitch case 1 (right direction in the same
and includes to control, based on the ID code received by the
position and inclination angle.
draWing). When the lock plate 5 Which Will be described
antenna 12 (information for engine performance or a unique
later is inserted betWeen the surface of the sWitch case 1 and
passWord), the engine operation of the small motorboat.
the projection of the stop sWitch knob 3 (as shoWn in the
same draWing), then the base end of the stop sWitch knob 3
(right tip end in the same draWing) is separated from the stop
sWitch body 6.
[0033] Speci?cally, When the antenna 12 has received the
ID code from the transponder 9, the microcomputer 14
determines Whether the ID code (particularly unique pass
Word) is a previously registered regular ID code (unique
[0027] The stop sWitch body 6 is provided in the sWitch
passWord) or not. When the ID code is a regular ID code, the
case 1 and is activated When abutting With the base end of
the stop sWitch knob 3 to alloW the engine of the small
engine performance is changed based on the information
possessed by the ID code. When the ID code is not a regular
ID code, the engine is caused to be in an idling state in Which
motorboat to stop or to be in an idling state. This alloWs,
When the lock plate 5 is disengaged from the stop sWitch
knob 3, the stop sWitch body 6 to activate to alloW the engine
the boat cannot run.
The lock plate 5 includes a resin-made plate-like
[0034] In this Way, the control section 11 changes the
engine performance based on the ID code from the tran
sponder 9 and the transponder 9 is detachably attached to the
lock plate 5. This alloWs the operator to easily eXchange the
member and includes, as shoWn in FIG. 3, the notch 5a at
one end in the plan vieW. The lock plate 5 also has at the
performance can be arbitrarily changed depending on the
substantial center tWo conveX sections 5b and has at the
operator’s preference in an easy manner.
of the small motorboat to be forcedly stopped or to be in an
idling state.
[0028]
other end of the plan vieW a hole SC to Which the Wire 7 is
inserted. The tip end of the Wire 7 (not shoWn) is designed
to be attached to the Wrist or the like of an operator of the
small motorboat.
[0029] When the notch 5a is engaged With or separated
from the periphery side of the stop sWitch knob 3, the lock
plate 5 can be inserted to the stop sWitch knob 3. This alloWs,
When the operator falls into Water, the lock plate 5 to be
disengaged from the stop sWitch knob 3 via the Wire 7. In the
transponder 9 according to need. Speci?cally, the engine
[0035] As shoWn in the same draWing, the microcomputer
14 also provides the Writing terminal a and the poWer source
terminal b from each of Which the Wirings L1 and L2 eXtend.
On the other hand, the Wiring L3 in the draWing shoWs a
layout in Which there is provided: the stop sWitch SW2 that
is closed When the start sWitch knob 2 is engaged With the
lock plate 5 and that is opened When the start sWitch knob
2 is detached from the lock plate 5; and the starter sWitch
SW1 sWitched in connection With the start sWitch knob 2.
Dec. 23, 2004
US 2004/0257201 Al
One end of the Wiring L3 is connected to the battery BT1 and
[0042]
the other end is connected to the battery BT2 via a starter
any of the above engine speci?cations, the process proceeds
relay or the like (not shoWn).
to S9 in Which the passWord included in the received ID
code is veri?ed. When the passWord is different from the
[0036]
The Wiring L4 extending to the power source
circuit 15 is connected betWeen the starter sWitch SW1 and
the stop sWitch SW2 in the Wiring I3, at the middle of Which
the tip end of the Wiring L2 extending from the poWer source
terminal b is connected. on the other hand, the poWer source
circuit 15 is connected With the Wiring L5 extending to the
battery BT1, at the middle of Which the Writing section 16
is interposed.
[0037]
This Writing section 16 has at both ends the Writing
codes 16a (see FIG. 6) that can be connected or detached
over the terminals c and d. When the connecting tools 16ml
and the connecting tools 16ab formed at both ends of the
Writing code 16a are connected to the terminals c and d,
Then, When the ID code is determined to include
previously registered regular passWord, the process proceeds
to S12 in Which the small motorboat is not permitted to run.
Then, the engine is kept in an idling state in Which the boat
cannot run.
[0043] On the other hand, When the passWord in the
received ID code coincides With the regular passWord, the
process proceeds to S10 in Which the display section 18
corresponding to the engine speci?cation determined in S3
to S7 is lit. More speci?cally, the ?ve LEDs of the display
section 18 are alloWed to correspond to the speci?ed engine
speci?cations, respectively, so that the LED corresponding
to the engine speci?cation determined. in S3 to S7 can be lit
respectively, the Writing terminal a of the microcomputer 14
to notify the operator of the speci?ed engine speci?cation.
may be provided With a poWer source from the battery BT1
(a state in this manner in Which the terminal is supplied With
a poWer source is called the HI state). On the contrary, When
the Writing code 16a is detached from the terminals c and d,
the Writing terminal a of the microcomputer 14 is not
supplied With a poWer source (a state in this manner in Which
the terminal is not supplied With a poWer source is called the
[0044] Thereafter, the microcomputer 14 included in the
LO state).
[0038] Speci?cally, When the microcomputer 14 recog
niZes that the poWer source supply from the Writing terminal
a is in the LO state, a normal operation is run (i. e., the
engine is controlled based on the ID code from the tran
sponder 9). When the microcomputer 14 recogniZes that the
poWer source supply from the Writing terminal a is in the HI
state, a Writing mode is provided. The Writing mode is a
mode in Which a regular ID code of a transponder is Written
to another transponder and the details Will be described later
based on a ?oWchart.
[0039]
On the other hand, the stop sWitch knob 3 in the
sWitch case 1 has at the upper part the display section 18
including ?ve LEDs as shoWn in FIG. 1. Each of the LEDs
composing the display section 18 is electrically connected,
as shoWn in FIG. 5, to the microcomputer 14. This display
section 18 maybe used to display the operation status of the
Writing section 16 and to display the engine performance
corresponding to the ID code of the transponder 9.
control section 11 sends to the ignition apparatus 17 a
running permission signal, thereby alloWing the small
motorboat to run based on the speci?ed engine speci?cation
(engine performance) (S11). When the received ID code
(information specifying engine speci?cation and unique
passWord) is different from the previously registered one in
S3 to S7, the process proceeds to S8 in Which it is deter
mined that communication With the transponder 9 is deter
mined to fail and thus the small motorboat is not permitted
to run.
[0045] The engine control apparatus is controlled as
described above. In this embodiment, the Writing section 16
can Write a regular ID code. This Writing operation Will be
described based on the ?oWchart of FIG. 8 to FIG. 10.
[0046] First, the terminals c and d of Writing section 16 are
connected With the connection tools 16ml and 16ab of the
Writing code 16a, respectively (S13). This alloWs the poWer
source of the battery BT1 to be supplied to the Writing
terminal a of the microcomputer 14, thereby starting the
control section 11 (S14). Thereafter, the microcomputer 14
monitors the poWer source terminal b (S15). When the
poWer source supply from the poWer source terminal b is in
the LO state, the process proceeds to S18 in Which the time
is monitored (S18).
[0040] Next, the engine control apparatus for the small
[0047] Then, When three minutes have passed since the
motorboat having the above structure Will be described With
reference to the control. First, When the boat is normally
poWer source supply to the poWer source terminal b is in the
operated (in Which a Writing operation to the transponder is
not provided), the lock plate 5 is inserted to the stop sWitch
knob 3 (S1) as shoWn in the ?oWchart of FIG. 7 to alloW the
poWer source of the battery BT1 to be supplied to the poWer
source terminal b of the microcomputer 14, thereby starting
the control section 11 (S2).
[0041] Then, the ID code transmitted from the transponder
9 is received by the control section 11 to determine What is
the engine performance speci?ed by the ID code (S3-S7).
LO state, the process proceeds to S19 in Which a stand-by
state is provided. When the poWer source supply to the
poWer source terminal b is in the HI state Within three
minutes (or When the Writing terminal is continuously in the
HI state), the process proceeds to S16 in Which the currently
used lock plate 5 is inserted to the stop sWitch knob 3. This
alloWs the ID code of the transponder 9 to be sent to the
control section 11, thereby starting the authentication of the
ID code (S17). Speci?cally, “Writing mode” as described
above is started.
Speci?cally, as described above, the engine performance can
[0048]
be set depending on the operator’s preference to be a level
ID code specifying the engine performance is determined
(S20 to S24). When it is determined that the information
includes any of the previously. speci?ed engine speci?ca
tions, the process proceeds to S26 in Which the passWord
for a race or an experienced user (high performance), a
general level (cruise), a beginner level (course), or a chil
dren’s level (run). Since the set information is included in
Then, as in the normal operation, information in the
the ID code, any of the engine speci?cation settings is
included in the received ID code is veri?ed. When the
determined in S3 to S7 by the control section.
passWord is different from the previously registered regular
Dec. 23, 2004
US 2004/0257201 A1
password, the process proceeds to S30 as a wrong password,
thereby stopping the communication with the transponder 9.
[0049] On the other hand, when the password in the
received ID code coincides with the regular password, the
process proceeds to S27 in which the display section 18
corresponding to the engine speci?cation determined in S20
to S24 is ?ashed (S27). This allows an operator to be noti?ed
of the engine speci?cation corresponding to a to-be-prepared
corresponding to the speci?ed engine speci?cation in the
display section 18 is ?ashed at double speed, then allowing
S45 to monitor the power source terminal b. When the power
source supply to the power source terminal b is in the HI
state (i.e., when the new lock plate is inserted to the stop
switch knob), then time monitoring is carried out (S46).
When three minutes have passed since the HI state, the
process proceeds to S47 in which the stand-by state is
ID code of a transponder. When there is no correspondence
provided (and the LED stops ?ashing). On the other hand,
with any of the previously speci?ed engine speci?cations in
when the power source supply to the power source terminal
S20 to S24, the process proceeds to S25 in which commu
nication with the transponder 9 is determined to fail.
[0050]
b is in the LO state within three minutes (i.e., when the new
lock plate is disengaged from the stop switch knob), the
LED in the display section 18 stops ?ashing (S48).
Next, the power source terminal b in the micro
computer 14 is monitor (S28) in which, when the power
source terminal b is in the HI state (i.e., state in which the
[0055] In this way, the operation for writing the regular ID
code of the transponder to another transponder is completed.
currently-used lock plate 5 is inserted to the stop switch
In order to carry out the same writing operation for other
knob 3), time monitoring is carried out (S31) and, when
transponders, the subsequent steps of S49 (in which a lock
plate attached with other transponders is inserted to a stop
three minutes have passed since the HI state is continually
provided, the process proceeds to S32 in which the stand-by
state is provided (and LED stops ?ashing). On the other
switch knob) and S50 (in which an ID code is written to the
transponder) are performed. The engine control apparatus
hand, when the power source supply to the power source
terminal b is in the LO state within three minutes (i.e., state
for the small motorboat according to the above embodiment
in which the currently-used lock plate 5 is disengaged from
the stop switch knob 3), the LED in the display section 18
manner.
stops ?ashing (S29).
[0051] Then, the lock plate 5 attached with another tran
sponder is inserted to the stop switch knob 3. Another
transponder has an ID code in which only an engine speci
allows a user to prepare a back-up transponder in an easy
[0056] The embodiment is described as in the above,
however, the present invention is not limited to this. For
eXample, the transponder 9 also may be inserted to and
buried in the lock plate. Alternatively, the LED as the display
section 18 also may be provided with another position in the
?cation is previously speci?ed and no unique password is
written. Speci?cally, in this embodiment, only a unique
password in the regular ID code of the transponder is written
provided at a position other than the one in the switch case
to another transponder to prepare a back-up transponder
1.
(lock plate). Alternatively, both of the engine speci?cation
and unique password in the regular ID code of the transpon
der may be written to another transponder.
[0052]
When another lock plate (the one attached with a
blank transponder) is attached by S33 is determined, then
what is the information for specifying engine performance
that the transponder has previously speci?ed is determined
(S34 to S38). When the information is determined as speci
fying any of the previously speci?ed engine speci?cations,
the process proceeds to S40 in which the regular password
of the transponder is written to the transponder attached to
another lock plate. When the information is determined as
switch case 1 in addition to the position in this embodiment.
The display section 18 (not limited to LED) also maybe
[0057] The writing section 16 according to this embodi
ment attaches or detaches from the writing code 16a to allow
the microcomputer 14 in the control section 11 to determine
whether the operation is a normal operation or a writing
operation. Instead of this, the switches are placed in the
wiring L5 (see FIG. 5), and determination between a normal
operation and a writing operation also may be carried out by
turning the above switches on/off. Although this embodi
ment is applied to a small motorboat, this embodiment also
maybe applied to other machines (e.g., ATV or snowmo
bile).
not specifying any of the previously speci?ed engine speci
[0058] According to the invention of Aspect 1, the writing
?cations in S34 to 538, the process proceeds to S39 in which
section can be used to write a regular ID code of a tran
it is determined that communication with a new transponder
is determined to fail.
sponder to another transponder, thus allowing the user to
easily prepare a back-up transponder in a case where the
transponder is lost.
[0053] When the regular password of the transponder is
written to the transponder attached to another lock plate, S41
locks further processings in order to prevent the transponder
from being written again. Thereafter, the new transponder is
communicated again to check the written password (S42).
[0059] According to the invention of Aspect 2, the control
section changes the engine performance based on the ID
code from the transponder. When the writing section writes
a regular ID code of a transponder to another transponder, a
in the display section 18 corresponding to the speci?ed
to-be-speci?ed engine performance can be changed. Thus, a
plurality of back-up transponders for which an engine per
engine speci?cation is ?ashed, thereby allowing the micro
formance can be speci?ed arbitrarily can be prepared.
When the password is con?rmed as the regular one, the LED
computer 14 to restart the monitoring of the power source
terminal b (S45).
[0054] On the other hand, when S41 determines that the
password written to the new transponder is different from the
regular one, the process proceeds to S43 in which the LED
[0060] According to the invention of Aspect 3, the display
section is provided for displaying the differences in engine
performance speci?ed for the transponder. Thus, the differ
ences in of the performance can be recogniZed and checked
both in a normal operation and a writing operation.
Dec. 23, 2004
US 2004/0257201 A1
What is claimed is:
1. An engine control apparatus comprising:
When the lock plate is disengaged from the stop sWitch
knob, the stop sWitch body is activated to alloW the
engine to stop or to be in an idling state.
a stop sWitch body for allowing an engine to stop or to be
in an idling state;
a stop sWitch knob that abuts With the stop sWitch body to
activate the stop sWitch body to alloW the engine to stop
or to be in an idling state;
a lock plate that is insertable to the stop sWitch knob;
a transponder that is provided at the lock plate side and
that can transmit a predetermined ID code;
2. The engine control apparatus according to claim 1,
Wherein
the control section changes the engine performance based
on the ID code from the transponder and, When the
Writing section is used to Write the regular ID code of
a transponder to another transponder, a to-be-speci?ed
engine performance can be changed.
3. The engine control apparatus according to claim 1,
further comprising:
a display section for displaying the difference in the
a control section that can receive the ID code transmitted
from the transponder and that can control based on the
ID code the engine operation; and
a Writing section for Writing a regular ID code of a
transponder to another transponder, Wherein
engine performance speci?ed for the transponder.
4. The engine control apparatus according to claim 1,
Wherein the transponder is inserted to and buried in the lock
plate.