JPS6312823B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle start control device that prohibits vehicle start when a door of the vehicle is opened.

BACKGROUND ART Conventionally, when a vehicle is operated, a lamp or a buzzer or the like is used to issue an alarm when a door is opened or ajar.

However, since this system only issues a warning, there is a problem in that in an emergency, the vehicle may start moving even when the door is open or ajar.

The present invention has been made in view of the above-mentioned problems, and it is possible to reliably prohibit starting the vehicle with the door open or in the ajar state through automatic control, and also to prevent the vehicle from being unable to start due to a failure of the door detection means, etc. The purpose of this invention is to make it possible to cancel the start-prohibited state according to the passenger's wishes in order to prevent this.

In order to achieve this object, the present invention includes: a running detection means for detecting the running state of the vehicle; a door detection means for detecting the open state of a door in the vehicle; and a signal from the running detection means to detect the stopped state of the vehicle. and a control means for issuing a start prohibition command when the open state of the door is determined based on a signal from the door detection means; The vehicle is configured to include a start prohibition means for prohibiting the start, and a release switch that is operable by a passenger and generates a release signal for canceling the start prohibition command of the control means.

The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 is an overall configuration diagram showing one embodiment. In FIG. 1, 1 is a vehicle speed sensor as a running detection means that generates a vehicle speed signal with a frequency corresponding to the running speed of the vehicle, and 2 is a door detection means provided on each of the driver's side and passenger's side doors. The door switch 3 is an ignition (IG) switch, and 4 is a return type release switch installed near the handle to cancel the start prohibition.

5 is a microcomputer as a control means that executes digital arithmetic processing according to a control program including a predetermined start control program;
It is composed of the CPU, ROM, RAM, I/O circuit section, and clock generation section as the main parts, and it starts operating when a several MHz crystal oscillator 6 is connected and the engine key switch is placed in the accessory position. It is activated by receiving a stabilized voltage of 5V from a stabilized power supply circuit (not shown), repeatedly executes predetermined arithmetic processing, and generates control commands for starting control (control commands for lamp drive and buzzer drive). ,
It generates various command signals (sensors and actuators are not shown) for other systems, etc. (neutral set and reset commands for automatic gear shifting) and other systems.

Reference numeral 7 denotes a lamp drive circuit for warning with a lamp that the door is open or the door is ajar, and 8 is a buzzer drive circuit that uses a buzzer to warn that the door is open or the door is ajar. Reference numeral 9 denotes a neutral control circuit, which receives a neutral set command signal from the microcomputer 5 and applies a neutral control signal to the electric automatic transmission control device 10 to switch the transmission mechanism to a neutral state, and also to switch the transmission mechanism to a neutral state using a neutral reset signal. is reset to release the neutral state and return to the shift position under automatic shift control. The neutral control circuit 9 and automatic transmission control device 10 constitute a start inhibiting means.

Next, the operation of the above configuration will be explained with reference to the calculation flowchart of FIG. 2. FIG. 2 is a calculation flowchart showing the calculation processing of the microcomputer 5 according to the start control program.

First, when the key switch is turned on to start driving the vehicle, a stabilized power supply circuit (not shown) starts operating, and the stabilized voltage is supplied to each circuit including the microcomputer 5, and the microcomputer 5 becomes in operation. After passing through initial setting operations including resetting the start flag, the process proceeds to the calculation processing of the start control program, and thereafter the calculation processing of the control program including this start control program is repeated at a predetermined period.

In this launch control program, the second
At the driving determination step 101 shown in the figure, it is determined whether or not the vehicle is driving based on the state of the signal from the IG switch 3. In order to start driving the vehicle, the key switch is turned on and the IG signal is sent from the IG switch 3. If this occurs, the determination becomes YES, and the process proceeds to door determination step 102. At this time, if both the driver's side and passenger's side doors are completely closed, the door switch 2 will not generate a door signal, so the determination in the door determination step 102 will be incorrect.
Become NO. Then, lamp off command step 1
Proceed to step 03 and send the lamp off command to the lamp drive circuit 7.
The buzzer off command is generated in step 10.
Step 4 proceeds to hold and generate a buzzer off command in the buzzer drive circuit 8, proceeds to neutral reset command step 105, generates a neutral reset command to the neutral control circuit 9, proceeds to open flag reset step 106, and resets the open flag. Reset. Thereafter, the arithmetic processing described above is repeatedly executed together with other control arithmetic processing, and no warning by opening the door or control for prohibiting start is performed.

However, if the door on the driver's side or passenger's side is open or ajar at the start of driving, a door signal is generated from the door switch 2.
When the door judgment step 102 is reached, the judgment is
YES, release switch judgment step 107
Proceed to. At this time, if the release switch 4 for canceling the start prohibition is not turned on, the determination in the release switch determination step 107 will be NO, and the process will proceed to the open flag determination step 112 where the start flag will be reset at the initial setting. , the determination becomes NO, and the vehicle stop determination step 113
Proceed to. At this time, if the vehicle has just started driving and is stopped, the vehicle speed sensor 1 will not generate a vehicle speed signal indicating the running state of the vehicle.
The judgment in this vehicle stop judgment step 113 is YES.
become. Then, lamp-on command step 114
The process proceeds to step 115 where a lamp-on command is held and generated in the lamp drive circuit 7, and the process proceeds to a neutral set command step 115 where a neutral set command is generated to the neutral control circuit 9. Due to this, the lamp drive circuit 7 drives the lamp to turn on,
The automatic transmission control device 10 forcibly switches the transmission mechanism to a neutral state in response to a neutral control signal from the neutral control circuit 9. Therefore,
It is prohibited to start driving with the door open or the door ajar.

If the door is opened from this state or the door that is in the ajar state is completely closed, the door switch 2 will no longer generate a door signal, so when the door determination step 102 is reached, the determination will be YES.
to NO. Then, a lamp off command step 103, a buzzer off command step 104,
In order to proceed to the neutral reset command step 105 and the open flag reset step 106, the lamp is turned off and the neutral switching is canceled by the lamp-off command and the neutral reset command.

On the other hand, when the door is temporarily opened when the vehicle is reversing, etc., and the above-mentioned lamp lights up and the neutral switch occurs, when the release switch 4 is turned on, the release switch 4 generates a release signal. Therefore, door determination step 102
The determination at the release switch determination step 107 is YES. The program then proceeds to start flag set step 108, lamp off command step 109, buzzer off command step 110, and neutral reset command step 111, so the lamp is turned off and the neutral switching is canceled. Also,
Since the start flag is set, the next start flag determination step 112 makes a determination of YES. Then, when the release switch 4 is turned on, the decision in the release switch decision step 107 becomes NO, and when the process proceeds to the release flag decision step 112, the decision becomes YES because the release flag is set.
Therefore, after the release switch 4 is turned on, even if the vehicle is driven backward (forward travel is also possible) with the door open, the lamp will not light up and the vehicle will not switch to neutral.

Then, when the door is closed again from this state, the determination at door determination step 102 is reversed from YES to NO, a series of arithmetic processing from step 103 to step 106 is executed, and the open flag is reset. Therefore, after this, when the vehicle is stopped and the door is opened or left ajar, the lamp is turned on and the mode is switched to neutral.

On the other hand, when the door is temporarily opened when the vehicle is moving backwards or forward at low speed, the steps start from door determination step 102, release switch determination step 107, and release flag determination step 1.
12, proceed to vehicle stop determination step 113;
Since the vehicle is in a running state, the determination becomes NO, and the process proceeds to a buzzer-on command step 116, where a buzzer-on command is held in the buzzer drive circuit 8 and generated. Then, close the door that was opened at this time,
Alternatively, when the release switch 4 is turned on, the buzzer drive is canceled by the arithmetic processing of the buzzer off command step 104 or 110.

In the above embodiment, the automatic transmission mechanism is switched to the neutral state in order to prohibit the vehicle from starting, but it may be switched to the parking state. In addition, in a vehicle with a manual transmission mechanism, as shown in FIG. 3, a clutch control device 11 is provided which forcibly controls off the clutch for transmitting power to the wheels in response to set and reset signals from a microcomputer 5. , a brake control device 1 that forcibly controls the brake operation in response to set and reset signals from a microcomputer 5.
2, and when the door is opened or left ajar when the vehicle is stopped, the clutch may be forcibly disengaged and the brake applied.

In addition, although the door switch 2 detects the door open and door ajar states in the above example, it is also possible to provide sensors that individually detect the door open and door ajar states and perform control according to each state. good.

Furthermore, although the door switch is provided on the passenger seat side and the driver seat side, in a four-door vehicle, the door switch may also be provided on the left and right doors of the rear seat.

Furthermore, although the release switch 4 is shown as being provided near the handle, it may also be provided near the operating knob of each door, or may also be used as a back switch. Further, in FIG. 2, the release switch judgment step 107 is placed after the door judgment step 102, but if the order is reversed and the release switch 4 is turned on, the lamp lighting and neutral switching will not occur even if the door is opened. It may be possible to prevent this from happening.

Furthermore, although the microcomputer 5 that executes digital arithmetic processing using software is shown as a control means, a hard logic configuration using electronic circuits may be used.

Furthermore, although the IG signal from the IG switch 3 is added to the microcomputer 5 to determine the driving state of the vehicle, this IG signal-based determination is eliminated, and when the door is opened or the vehicle is stopped, a neutral signal is used regardless of the driving state. The command may be generated to the automatic transmission control device 10, and the automatic transmission control device 10 may accept the neutral command only when the vehicle is in a driving state.

As described above, in the present invention, a start prohibition command is generated when the stopped state of the vehicle and the open state of the door are determined, and when the start prohibition command is received when the vehicle is in the operating state, the start of the vehicle is prohibited. This has the excellent effect of being able to reliably prohibit the start of departure with the door open or in the ajar state through automatic control.

Furthermore, in the present invention, even though the door is actually closed, if the start prohibition command is output due to a failure of the door detection means, the above-mentioned start prohibition command is canceled by operating the release switch. , it becomes possible to start the vehicle. In other words, the present invention has an excellent effect in that the prohibition of starting due to automatic control can be canceled by the occupant's manual operation.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
FIG. 2 is a calculation flowchart showing the calculation processing of the microcomputer in FIG. 1, and FIG. 3 is a partial configuration diagram showing another embodiment of the present invention. 1...Vehicle speed sensor as a traveling detection means, 2...
...Door switch as door detection means, 4. Release switch, 5. Microcomputer as control means, 9, 10.. Neutral control circuit constituting start prohibition means, automatic transmission control device.

Claims (1)

[Scope of Claims] 1. A running detecting means for detecting the running state of the vehicle; a door detecting means for detecting the open state of a door in the vehicle; a stopped state of the vehicle is determined based on a signal from the running detecting means, and a control means for issuing a start prohibition command when the open state of the door is determined based on a signal from the door detection means; and a start prohibition control means for prohibiting the start of the vehicle in response to a start prohibition command from the control means when the vehicle is in a driving state. A starting control device for a vehicle, comprising: means; and a release switch that is operable by an occupant and generates a release signal for canceling the start prohibition command of the control means.