JP3267175B2 - Automotive electronic control unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle electronic control device which is connected to a junction box.

[0002]

2. Description of the Related Art An in-vehicle electronic control device which is connected to a junction box by being connected thereto is connected to a junction box for intensively connecting a power supply line and a signal line, so that power is supplied through the junction box. And controls the drive of various electrical components via the junction box. The functions of such an in-vehicle electronic control device include a key cylinder of an ignition switch when it detects that the driver's door has been opened through a door state detection switch that detects the opening and closing of the driver's door. When it detects that the ignition key is still inserted in the ignition key cylinder via the provided ignition key detection switch, it activates the alarm buzzer to notify the driver of the vehicle that the ignition key has been forgotten to be removed. A function to prevent forgetting to remove the key,
When it is detected that the door is opened through the door state detection switch provided on each door, the room lamp is turned on, and when it is detected that all the doors are closed through the door state detection means, a predetermined state is detected. A room light control function that turns on the room lamp with a constant luminous intensity for a period of time and turns off the room lamp while gradually dimming the luminous intensity after the predetermined time elapses, and an electric solution provided in each door A centralized door lock control function that drives and controls the locking means so that, for example, when the door unlocking means of the driver's seat is unlocked or locked, all the door unlocking means are unlocked or locked in conjunction with this. Various functions are included.

[0003] Since such a vehicle-mounted electronic control device is connected by being fitted to a junction box, if the electronic control device is incompletely fitted to the junction box, the connection between the electronic control device and the junction box is incomplete. Since the electrical connection is not performed, the function for preventing forgetting to remove the key, the room lamp control function, the centralized door lock function, and the like do not function. In order to avoid such a situation, it is necessary to confirm that the electronic control device is completely fitted in the junction box.

A conventional method of confirming the fitting of an electronic control device to a junction box is based on the fact that when a vehicle is assembled, a work vehicle opens and closes a door and turns on a room light to actually forget to remove the key. The engagement check is performed by activating the prevention function, the room lamp control function, and the centralized door lock function.

[0005] As another conventional method which can be applied to a fitting inspection of an in-vehicle electronic control device, an inspection terminal is provided on a casing of a control device of a vehicle safety device such as an airbag device, and an inspection device is provided. There is a method of extracting an electrical signal corresponding to the specification of the control device from the terminal for inspection by using the control device, and determining whether the control device is appropriate (Japanese Utility Model Application Laid-Open No. 7-597).
No. 3).

[0006]

However, in the method of operating the function provided in the vehicle-mounted electronic control device by opening and closing the door, the door is opened and closed in order to perform a fitting check of the electronic control device. For example, it is necessary to activate the functions provided in the electronic control device, thereby increasing the number of steps in the manufacturing process.

[0007] Further, even in the method of providing an inspection terminal on the casing of the control device, it is necessary to connect the inspection device to the inspection terminal and perform an inspection, thereby increasing the number of man-hours. A problem arises, and a special configuration for inspection such as an inspection device is required, which causes a problem that the device and the working equipment are complicated.

In view of the above problems, the present invention can perform a fitting inspection of a vehicle-mounted electronic control device to a junction box without performing a special inspection work, thereby reducing man-hours in a manufacturing process. It is an object of the present invention to provide an in-vehicle electronic control device capable of performing the following.

[0009]

A technical means for achieving the above object is to fit and connect to a junction box for intensively connecting a power supply line and a signal line, and to connect the power through the junction box. On the other hand, is connected to a plurality of electrical components via a junction box, and drives and controls the electrical components. When it is detected that the ignition key has been forgotten to be removed based on an input signal, the notifying device is driven via the junction box. A vehicle-mounted electronic control device having a function of notifying a passenger of forgetting to remove an ignition key, detecting that power supply to the vehicle-mounted electronic control device has been started, and starting the power supply. Detection means for outputting a signal indicating that the signal is received, and signal output means for receiving the signal and outputting a signal for driving the notification means, Characterized in that it comprises a.

[0010] Further, the power supply line and the signal line are connected by being fitted to a junction box for centrally connecting the power supply line and the signal line, and while being supplied with power through the junction box, a plurality of electrical components are connected via the junction box. A vehicle-mounted electronic control device having a function of driving and controlling the electrical components and turning on or off a room lamp through a junction box in response to opening and closing of a door. Detecting means for detecting the start of the supply and outputting a signal indicating that the supply of the electric power has been started; and receiving the signal, outputting a signal for lighting or blinking the room lamp for a predetermined time. Signal output means.

Furthermore, the power supply line and the signal line are connected by being fitted to a junction box for centrally connecting the power supply line and the signal line, and while being supplied with power via the junction box, a plurality of electrical components are connected via the junction box. A vehicle-mounted electronic control device having a mechanism for driving and controlling the electric components and unlocking and unlocking an electric unlocking means provided in each door, wherein power is supplied to the vehicle-mounted electronic control device. Detecting means for detecting that the power supply has started, and outputting a signal indicating that power supply has started, and receiving the signal, locking the unlocking means once, and then outputting a signal for unlocking. And a signal output means for outputting.

[0012]

FIG. 1 is an exploded perspective view showing a vehicle-mounted electronic control device 1 according to an embodiment of the present invention and a junction box 3 to which the electronic control device 1 is fitted and connected. is there.

The electronic control unit 1 has an electronic control unit main body 11 in which electronic components constituting a microcomputer 5 described later and a power supply circuit 7 (see FIG. 3) are arranged on a substrate 9.
Is housed in a casing 13 composed of two upper and lower parts. The electronic control unit 1 has a junction on the substrate 9 for receiving power supply via the junction box 3 and for exchanging signals with various electric components via the junction box 3. A connector 15 for connection to the box 3 is provided. Connector 15 of upper casing 13
A through hole 13a is provided in a portion facing the connector 15 and the connector 15 and the connector on the junction box 3 side are fitted through the through hole 13a.

The junction box 3 is used to intensively connect the power supply lines and signal lines of various electric components, and the electronic control unit 1 is provided at the bottom as shown in FIG.
A fitting recess 17 that fits loosely is provided. On the upper surface of the junction box 3, there are provided a connector for a power supply line from a battery and a plurality of connector connection portions 20 for fitting and connecting connectors for a power supply line and a signal line connected to various electrical components. I have. A connector (not shown) that fits with the connector 15 is provided in the fitting recess 17. When the electronic control device 1 is fitted into the fitting recess 17 as shown in FIG. , Connector 1
5 is fitted with the connector on the junction box 3 side,
The electronic control unit 1 and the junction box 3 are electrically connected, and the electronic control unit 1 is fixed to the junction box 3.

As described above, when the electronic control unit 1 is fitted and connected to the junction box 3, the electronic control unit 1 is connected to the junction box 3 and the power supply line connected to the connector connection unit 20 of the junction box 3. Via signal lines, it is connected to electrical components such as a battery, a room lamp, and a motor for driving an electric unlocking means provided on each door.

FIG. 3 is a block diagram showing an electrical configuration of the electronic control unit 1 and various electric components connected to the electronic control unit 1. The electronic control unit 1 includes a power supply circuit 7, a microcomputer 5, input circuits 21 and 23, a switch determination circuit 25, and drive circuits 27, 29 and 31.

The power supply circuit 7 includes a junction box 3
And for supplying power to the microcomputer 5 and the drive circuits 27, 29, 31 via the battery B. The microcomputer 5 is provided with an alarm buzzer for notifying the driver of forgetting to remove the ignition key via drive circuits 27, 29 and 31 based on signals input via the input circuits 21 and 23 and the switch determination circuit 25. 33 (notifying means), a room lamp 35 for illuminating the interior of the vehicle, and a motor 37 provided for each door, for driving an electric unlocking means provided for each door to unlock the door. Drive control.

The electronic control unit 1 having such a microcomputer 5 prevents the driver from forgetting to remove the ignition key when the driver's seat door is opened while the ignition key is still inserted in the ignition key cylinder. A function to prevent forgetting to remove the key that sounds the alarm buzzer 33. When one of the doors is opened, this is detected, the room lamp 35 is turned on, and when it is detected that all the doors are closed, the luminous intensity is constant for a predetermined time. After turning on the room lamp, the room light 35
A room lamp control function to turn off the light, and, for example, when the unlocking means of the door of the driver's seat is unlocked or locked, the unlocking means unlocks or locks all the doors in conjunction with this. When the supply of electric power to the electronic control unit 1 is started, a normal function such as a centralized door lock control function for driving and controlling the means is detected, the alarm buzzer 33 and the like are activated, and the electronic control unit 1 3 has a fitting inspection function that is known to an operator that the fitting is completely fitted.

In response to this, the microcomputer 5
Is a first control unit 5 that controls the normal function of the electronic control unit 1.
a, and a second control unit 5b (signal output means) that controls the fitting inspection function. The microcomputer 5 includes, in addition to the first and second control units 5a and 5b, a detection unit 5c (detection unit) that detects that power supply from the power supply circuit 7 has started, and each of the control units 5a. , 5b are provided with a memory 5d for storing a control program and control data for performing a control operation.

The input circuit 21 is connected to an ignition key detecting switch 39 via the junction box 3. The key detection switch 39 is provided on the ignition key cylinder, and is configured to conduct or cut off depending on whether or not the ignition key is inserted into the ignition key cylinder. Then, depending on whether the key detection switch 39 is conducting or cut off, the microcomputer 5 receives a signal from the key detection switch 39 via the input circuit 21.
Becomes a low level or a high level. Based on a change in this signal, the first control unit 5a determines whether or not the ignition key is inserted into the ignition key cylinder. It is supposed to.

The input circuit 23 is connected to the door state detection switches 41 and 43 via the junction box 3. The door state detection switch 41 is for detecting the opening / closing state of the driver's seat door, and the door state detection switch 43 is for detecting the opening / closing of the passenger seat door. When the vehicle on which the electronic control device 1 is mounted is a four-door vehicle, it is assumed that four door state detection switches are connected to the input circuit 23 corresponding to the four doors. .

Each of the door state detection switches 41 and 43 conducts or shuts off depending on whether the corresponding door is open or closed. When the door state detection switches 41 and 43 are turned on or off, the signals input from the door state detection switches 41 and 43 to the microcomputer 5 via the input circuit 23 go low or high. That is, the first controller 5a determines whether each door is open or closed based on the signal level of this signal.

The switch discriminating circuit 25 is connected to the lighting switch 45 provided, and when the operating piece 45a of the lighting switch 45 is at the position of the contact 45b, the contact 4
The signal input to the switch determination circuit 25 via the signal line 47 connected to the switch 5b becomes low level,
When a is at the position of the contact 45c, the signal input to the switch determination circuit 25 via the signal line 49 connected to the contact 45c is at a low level, and when the operating piece 45a is at the position of the contact 45d, the signal is low. Any signal input to the switch determination circuit 25 via the lines 47 and 49 becomes high level.

The switch discriminating circuit 25 operates the operating piece 4 based on a signal input through the signal lines 47 and 49.
It is determined which of the contacts 45b, 45c, and 45d the 5a is located at, and the operating piece 45a determines which of the contacts 45b, 4
A signal indicating whether the microcomputer is located at positions 5c and 45d is output to the first controller 5a of the microcomputer 5.

The first control section 5a is configured such that the operating piece 45a
When the door is at the position 5b, the room lamp 35 is turned on when any of the doors is opened, and when all the doors are closed, the room lamp 35 is turned on at a constant luminous intensity for a predetermined time and then a predetermined time elapses. Then, the room lamp 35 is turned off while gradually reducing the luminous intensity. When the operating piece 45a is at the position of the contact point 45c, the room lamp 35 is not engaged in opening and closing the door.
Is turned on, and the operating piece 45a is
When the door is at the position 5d, the room lamp 33 is turned off without starting the door opening / closing operation.

Therefore, the occupant operates the lighting switch 45 to move the operating piece 45a to one of the contact points 45b, 45c, 4c.
By locating at the position 5d, it is possible to switch between turning on or off, turning on, or turning off the light according to the opening and closing of the door.

The first control unit 5a is responsible for the function of preventing the ignition key from being forgotten, the function of locking the centralized door, and the like, in addition to the function of controlling the room lamp 33.

On the other hand, the second control unit 5b has a function of inspecting the fitting of the electronic control unit 1 to the junction box 3. In a state where the electronic control device 1 is fitted and connected to the junction box 3, the connection of the power supply line between the junction box 3 and the battery B is completed, and the supply of power from the battery B to the electronic control device 1 Is started, the detection unit 5c of the microcomputer 5 detects this, and outputs a signal to the electronic control unit 1 indicating that the supply of power from the battery B has been started. In response to the signal output from the detection unit 5c, the second control unit 5b outputs a signal for sounding the alarm buzzer 33 for a predetermined time, a signal for turning on or off the room lamp 35 for a predetermined time, or a motor 37. After driving and locking the unlocking means provided on each door, at least one of the unlocking signals is transmitted to the corresponding drive circuit 27,
29 and 31. In the case where the fitting inspection is performed by driving the unlocking means, the fitting can be confirmed from the driving sound of the unlocking means and the operation of the operation unit that operates with the locking and unlocking.

FIG. 4 is a flowchart showing the processing of the microcomputer 5. In step S1, the detecting unit 5
c detects that the supply of power from the battery B has been started, the process proceeds to step S2, and the second control unit 5b controls at least one of the alarm buzzer 33, the room lamp 35, and the unlocking means as described above. One is actuated as described above and proceeds to step S3. In step S3, the normal control of the alarm buzzer 33, the room lamp 35, and the motor 37 by the first control unit 5a is performed.

Therefore, according to the on-vehicle electronic control device 1 of the present embodiment, the automatic connection of the power supply line between the junction box 3 in which the electronic control device 1 is fitted and the battery B is completed, At least one of the alarm buzzer 33, the room lamp 35, and the unlocking means is activated, and the alarm buzzer 33, the room lamp 35,
Alternatively, by confirming the operation of the unlocking means, the fitting of the electronic control unit 1 to the junction box 3 is confirmed, so that the operator can perform special fitting inspection such as opening and closing the door as in the conventional case. Operation need not be performed, and as a result, the number of steps in the manufacturing process can be reduced.

The sound of the alarm buzzer 33 when the alarm buzzer 33 is sounded for the fitting inspection may be the same as the above-mentioned sound at the time of activation of the function for preventing the user from forgetting to remove the key, or may be a different sound. In addition, the room lamp 35 is used for fitting inspection.
Is controlled by the first control unit 5a in a normal lighting control method, that is, by turning on the light at a constant light intensity for a predetermined time after the door is closed, and then gradually decreasing the light intensity. A lighting control method similar to the method of turning off the light, a lighting control method of simply turning on the light for a predetermined time and then turning off, or a lighting control method of simply turning on and off the light for a predetermined time may be used.

[0032]

As described above, according to the first aspect of the present invention, when the supply of electric power to the on-vehicle electronic control device is started, the notifying means is operated accordingly, and this notifying means is provided. Inspection of the fitting of the electronic control unit for the vehicle to the junction box is performed by confirming the operation of the vehicle.Therefore, there is no need for the worker to perform the work for the fitting inspection as in the conventional case. Can be reduced.

According to the second aspect of the present invention, when the supply of electric power to the on-vehicle electronic control device is started, the room lamp is turned on or blinked for a predetermined period of time. Inspection of fitting of the electronic control unit mounted on the vehicle to the junction box is performed by checking whether the LED lights or blinks, so that there is no need for the worker to perform the work for the fitting inspection as in the related art. Man-hours can be reduced.

Further, according to the third aspect of the present invention,
When the power supply to the on-vehicle electronic control device is started, the unlocking means is once locked and then unlocked, so that the operation of the unlocking means is confirmed by confirming the operation of the unlocking means. Since the fitting inspection of the electronic control device to the junction box is performed, the worker does not need to perform the work for the fitting inspection as in the related art, and the man-hour of the manufacturing process can be reduced.

[Brief description of the drawings]

FIG. 1 shows an on-vehicle electronic control device according to an embodiment of the present invention;
FIG. 4 is an exploded perspective view showing a junction box to which the electronic control device is fitted and connected.

FIG. 2 is a partial cross-sectional view of the junction box showing a state in which the on-vehicle electronic control device of FIG. 1 is fitted.

FIG. 3 is a block diagram showing an electrical configuration of the electronic control device of FIG. 1 and various electric components connected to the electronic control device.

FIG. 4 is a flowchart showing a process of the microcomputer of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 In-vehicle electronic control device 3 Junction box 5b 2nd control part 5c Detection part 33 Alarm buzzer 35 Room lamp

────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification symbol FI G01M 17/007 G01R 31/00 G01R 31/00 G01M 17/00 Z (56) References JP-A-6-111866 (JP, A Japanese Unexamined Patent Publication (Kokai) No. 1-106753 (JP, A) Japanese Unexamined Patent Publication (Kokai) No. 5-5377 (JP, A) Japanese Utility Model Application Sho 57-72347 (JP, U) Japanese Utility Model Application Laid-open No. 4-59547 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) F02N 15/00 F02D 29/02 F02D 45/00 345 G01R 31/00 G01M 17/007 E05B 47/00 E05B 65/20 B60R 16/02

Claims (3)

(57) [Claims] A power supply line and a signal line are connected by being fitted to a junction box for centrally connecting the power supply line and the signal line, and while being supplied with power via the junction box,
Connected to a plurality of electrical components via a junction box, controls the drive of the electrical components, and detects that the ignition key has been forgotten to be removed based on an input signal, and drives the notification means via the junction box to provide the passenger with the ignition key. An electronic control unit for a vehicle having a function of notifying that the user has forgotten to remove the electric power, detecting that the supply of electric power has been started to the electronic control unit for a vehicle, and outputting a signal indicating that the supply of electric power has been started. And a signal output unit that receives the signal and outputs a signal for driving the notification unit. 2. A power supply line and a signal line are connected by being fitted to a junction box for centrally connecting the power supply line and the signal line, and while being supplied with power through the junction box,
An in-vehicle electronic control device having a function of being connected to a plurality of electrical components via a junction box, controlling the drive of the electrical components, and turning on or off a room lamp via the junction box according to opening and closing of a door. Detecting means for detecting that power supply has been started to the on-vehicle electronic control device, and outputting a signal indicating that power supply has been started; and receiving the signal, turning on the room lamp for a predetermined time. Signal output means for outputting a signal for lighting or blinking,
An on-vehicle electronic control device comprising: 3. A power supply line and a signal line are connected by being fitted to and connected to a junction box for centrally connecting the power supply line and the signal line.
A vehicle-mounted electronic control device that is connected to a plurality of electrical components via a junction box, controls driving of the electrical components, and has a mechanism for unlocking and unlocking an electric unlocking means provided in each door. Detecting means for detecting that power supply has been started to the vehicle-mounted electronic control device, and outputting a signal indicating that power supply has been started; and receiving the signal, temporarily locking and unlocking the unlocking means. After that, a signal output means for outputting a signal for unlocking,
An on-vehicle electronic control device comprising: