JP4514054B2 - Vehicle power supply control device - Google Patents

Description

The present invention relates to a vehicular power supply control device that performs power source switching control in a vehicular engine start / stop device.

  As a means for starting and stopping the vehicle engine, in addition to the conventional method using a mechanical key, the vehicle power source is switched by reading an ID code from a portable device possessed by the driver in recent years. An engine start / stop device is used. This engine start / stop device includes an in-vehicle device having a function of reading an ID code from a portable device possessed by a driver.

  When the driver who is an authorized user starts the engine using the engine start / stop device described above, the driver holds the portable device and gets on the vehicle, so that the in-vehicle device reads the ID code from the portable device. The ID code stored in advance is checked, and after confirming that the user is a legitimate user, the engine is allowed to start. An immobilizer is known as a device that reads an ID code from a portable device and collates it with an ID code stored in advance.

  In Patent Document 1, several proposals have been made regarding the timing of collating ID codes in order to eliminate the time lag from the operation of the engine start switch to the engine start. That is, the ID code is verified to confirm that the user is an authorized user, before the engine start switch is operated, when the brake pedal or clutch pedal is depressed, or when the vehicle door is opened. It is described that it is performed at the time or when the passenger is seated in the driver's seat.

  FIG. 7 shows a schematic processing flow of the conventional power source switching. Conventionally, when switching from the power-off state (step S101) to the ACC state, the ID code is collated as described above (step S102), and when the ID code matches the normal one, switching to the ACC state is performed. (Step S103). On the other hand, if the ID code does not match the regular one, the power is turned off.

After the power supply is in the ACC state, the power supply is sequentially switched to the IG state (step S104), starter start (step S105), and engine start (step S106) without checking the ID code. It is possible to switch.
JP 2005-125929 A

However, the conventional vehicle power supply system has the following problems. In the verification of the ID code according to Patent Document 1, authentication confirmation is performed at an early stage when the driver gets into the vehicle. Therefore, once the power is switched, the ACC state is entered. The engine could be started without a key and could be stolen.
In addition, there is a possibility that the power supply may be switched to the IG state due to an erroneous operation or mischief by a child who does not have a regular key, and the battery is wasted.

  Accordingly, the present invention has been made to solve these problems, and provides a vehicle power supply control device having a function of preventing theft and prevention of erroneous operations by children, etc. by preventing power supply switching by persons other than authorized users. The purpose is to provide.

1st aspect of this invention is a vehicle power supply control apparatus which controls switching of the power supply state of a vehicle, Comprising : ID for authenticating the said regular user from the portable machine which a regular user possesses and the said portable machine ID code authentication confirming means having an in-vehicle device that inputs a code and collates with a regular ID code stored in advance and authenticates the regular user when the ID code and the regular ID code match ; When the elapsed time since the authentication of the authorized user by the ID code authentication confirmation means is within a predetermined allowable time, it is determined that the authentication of the authorized user is unnecessary, and when the elapsed time exceeds the allowable time comprising a determining authentication condition determining means requires authentication of the authorized user, and a power supply switching means switches the power supply state, and control means for controlling said power switching means, wherein When a predetermined power switching instruction is input when the power state is off, the control unit requests the ID code authentication confirmation unit to control the power switching unit when the authorized user is authenticated. After the power supply state is switched on and the power supply state is switched on, the authentication condition determination means is requested every time the power supply switching instruction is input to determine whether authentication of the authorized user is necessary. is allowed, the or authentication condition determining means determines that do not require authentication of the authorized user, or the authentication condition determining means is required and then determine authentication of the authorized user and requesting the ID code authentication check means when the authentication of the authorized user is performed Te, a vehicle power supply control device and switches the power supply state by controlling the power switching means.

According to a second aspect, the vehicle includes an immobilizer device having means for authenticating the authorized user, and the ID code authentication confirming means authenticates the authorized user according to an authentication result of the authorized user by the immobilizer device. The power supply control device for a vehicle is characterized in that it is performed.

A third aspect is the vehicle power supply switching device, wherein the power supply switching instruction includes a switching instruction to a power-on state .

  As described above, according to the present invention, since the ID code is collated every time the predetermined power source is switched under the predetermined condition, a person who does not have the regular ID code can use the predetermined power source. Switching cannot be performed, and it is possible to prevent vehicle theft and child mischief.

  A configuration of a vehicle power supply control device according to a preferred embodiment of the present invention will be described in detail with reference to the drawings. In addition, about each structural part which has the same function, the same code | symbol is attached | subjected and shown for simplification of illustration and description.

  FIG. 2 is a block diagram showing the configuration of the vehicle power supply control device according to the embodiment of the present invention. As for the power supply state of the vehicle, for example, starting from a stopped state is switched from an off state to an ACC on state, an IG on state, and further a starter start. The vehicle power supply control device 100 controls such switching of the power supply state.

  The vehicle power supply control device 100 according to the present embodiment determines whether or not it is necessary to authenticate the authorized user by the ID code authentication confirmation unit 110 for authenticating the authorized user and the ID code authentication confirmation unit 110. An authentication condition determining unit 120, a power switching unit 130 for switching the power state of the vehicle, and a control unit 140 for controlling the power switching unit 130 based on signals from the ID code authentication confirmation unit 110 and the authentication condition determining unit 120 are provided. ing.

  The power supply switching instruction 200 from the driver is input to the control means 140. When the control means 140 inputs the power supply switching instruction 200, the permission signal from the ID code authentication confirmation means 110 and the authentication request signal from the authentication condition determination means 120 are displayed. Based on the above, it is determined whether or not power switching is appropriate, and when it is determined that power switching is appropriate, the power switching means 130 is controlled to perform power switching.

  The ID code authentication confirmation means 110 confirms that the driver is a regular user, inputs an ID code from the driver, and the input ID code matches the stored regular ID code. Do or match. When it is confirmed that the input ID code matches the regular ID code, the permission signal is output to the control means 140.

  An embodiment of the ID code authentication confirmation unit 110 is shown in FIG. The ID code authentication confirmation unit 110 shown in FIG. 3 includes a portable device 111 and an in-vehicle device 112. When a legitimate user drives the vehicle, it is necessary to have the portable device 111. The vehicle-mounted device 112 can read the ID code from the portable device 111 by wireless communication when the portable device 111 is within a predetermined range. Then, by comparing the read ID code with an ID code stored in advance in the vehicle-mounted device 112, it is determined whether or not the portable device 111 is genuine.

  In the embodiment of the ID code authentication confirmation unit 110 shown in FIG. 3, the in-vehicle device 112 reads the ID code from the portable device 111 by wireless communication. However, the ID code is obtained by directly connecting the portable device 111 to the in-vehicle device 112. You may make it read. In addition, the predetermined range where the portable device 111 is located may be in the vicinity of the vehicle within a predetermined distance from the inside of the vehicle and the vehicle-mounted device 112.

  The authentication condition determination unit 120 determines a condition for authenticating the ID code. The authentication condition determination unit 120 determines whether the preset condition is satisfied. If the condition is satisfied, an authentication request is issued. The signal is output to the control means 140.

  As one example of the conditions for performing the above ID code authentication, when the power switch request from the driver is a request to switch to the power-on state, it is determined that authentication by the ID code authentication confirmation unit 110 is necessary and The authentication request signal is turned on and output to the control means 140. Then, when the authentication request signal input from the authentication condition determination unit 120 is on, the control unit 140 performs power switching to the power switching unit 130 when the permission signal is input from the ID code authentication confirmation unit 110. Let

  On the other hand, when the power supply switching request is a request to switch to the power-off state, it is determined that authentication by the ID code authentication confirmation unit 110 is unnecessary, and the authentication request signal is turned off and output to the control unit 140.

  As another example of the conditions for authenticating the ID code, the elapsed time from the time when the ID code authentication confirming unit 110 last authenticated the ID code is measured, and the elapsed time is a predetermined allowable time. It can be set as the said condition whether it exceeds. In this case, when the elapsed time is within the allowable time, the authentication condition determination unit 120 determines that the authentication by the ID code authentication confirmation unit 110 is unnecessary, and outputs the authentication request signal to the control unit 140 as OFF.

  On the other hand, when the elapsed time exceeds the allowable time, it is determined that authentication by the ID code authentication confirmation unit 110 is necessary, and the authentication request signal is turned on and output to the control unit 140. Then, when the authentication request signal input from the authentication condition determination unit 120 is on, the control unit 140 performs power switching to the power switching unit 130 when the permission signal is input from the ID code authentication confirmation unit 110. Let

  The ID code authentication confirmation unit 110 and the authentication condition determination unit 120 may be executed when the power switch instruction is issued from a driver, or when the power switch instruction is issued, the authentication condition determination unit. 120 may be executed, and the ID code authentication confirmation unit 110 may be executed when the authentication request signal input from the authentication condition determination unit 120 is on. The execution request of the ID code authentication confirmation unit 110 and the authentication condition determination unit 120 can be performed by the control unit 140.

  The power supply switching unit 130 causes the power supply device 210 to switch the power supply state. The power supply state of the power supply device 210 includes an ACC state, an IG state, and a starter start state.

  A basic flow of power supply switching in this embodiment is shown in FIG. The processing shown in FIG. 1 can be processed by the control means 140. In FIG. 1, when the power supply switching instruction is input in a state where the vehicle is powered off (step S1), the ID code authentication confirmation unit 110 performs ID code verification as described above, and the verification result is confirmed ( Step S2). When the collation result is OK, the power source is switched to the ACC state via the power source switching unit 130 (step S3), while when the collation result is NO, the power source is kept off.

  When the power supply switching instruction is input when the power supply is in the ACC state, the ID code authentication confirming unit 110 performs ID code verification in the same manner as described above, and the verification result is confirmed (step S4). When the collation result is OK, the power source is switched to the IG state via the power source switching unit 130 (step S5), while when the collation result is NO, the power source is kept in the ACC state.

  Further, when the power supply switching instruction is input when the power supply is in the IG state, the ID code authentication confirming unit 110 collates the ID code in the same manner as described above, and confirms the collation result (step S6). If the collation result is OK, the power source is switched to starter start via the power source switching means 130 (step S7) and the engine is started (step S8). On the other hand, if the collation result is NO, the power source is in the IG state. Leave as it is. When the engine is started in step S8, the power supply is switched from the battery to the alternator.

  As described above, according to the vehicle power supply control device 100 of the present embodiment, since the ID code is collated every time the power supply is switched, a person who does not have the regular ID code The power supply cannot be switched, and it is possible to prevent theft of the vehicle, mischief of children, and the like.

  Next, in the case where the authentication condition determination unit 120 of this embodiment determines whether or not the ID code verification by the ID code authentication confirmation unit 110 is necessary based on the elapsed time since the last ID code verification. An example of the basic flow of power supply switching is shown in FIG.

  In FIG. 4, when the power supply switching instruction is input in a state where the vehicle is powered off (step S11), the ID code authentication confirming unit 110 collates the ID code and confirms the collation result (step S12). . When the collation result is OK, the power source is switched to the ACC state via the power source switching unit 130 (step S13), while when the collation result is NO, the power source is kept off.

  Further, when the power supply switching instruction is input when the power supply is in the ACC state, the authentication condition determination unit 120 determines whether the elapsed time from the collation of the ID code in step S12 is within the allowable time (step S12). S14) When the elapsed time is within the allowable time, the power source is switched to the IG state via the power source switching means 130 (step S15).

  On the other hand, if the elapsed time exceeds the allowable time, the ID code authentication confirmation unit 110 is allowed to collate the ID code and confirm the collation result (step S16). If the collation result is OK, the power source is switched to the IG state via the power source switching means 130 (step S15). On the other hand, when the collation result is NO, the power source is kept in the ACC state.

  Further, when the power supply switching instruction is input when the power supply is in the IG state, the authentication condition determination unit 120 determines whether the elapsed time is within the allowable time (step S17), and when the elapsed time is within the allowable time Then, the power source is switched to starter start via the power source switching means 130 (step S18), and the engine is started (step S19).

  On the other hand, if the elapsed time exceeds the allowable time, the ID code authentication confirmation unit 110 is allowed to collate the ID code and confirm the collation result (step S20). If the collation result is OK, the power source is switched to starter start via the power source switching means 130 (step S18), and the engine is started (step S19). On the other hand, when the collation result is NO, the power supply is left in the IG state.

  Next, FIG. 5 shows an example of a flow of power supply switching processing when the ID code authentication confirmation unit 110 of the present embodiment includes the portable device 111 and the in-vehicle device 112. As shown in the figure, in this embodiment, the ID code is collated using the portable device 111 and the in-vehicle device 112, and the collation result is confirmed.

  That is, when a power supply switching instruction is input with the power off (step S21), the in-vehicle device 112 communicates with the portable device 111 to acquire and collate the ID code (step S22). And based on the result of checking the collation result (step S23). The power source is switched to the ACC state (step S24), or the power source is kept off.

  Next, when the power supply switching instruction is input when the power supply is in the ACC state, the in-vehicle device 112 communicates with the portable device 111 to acquire and collate the ID code (step S25). Then, based on the result of checking the collation result (step S26), the power source is switched to the IG state (step S27), or the power source is left in the ACC state.

  Further, when the power supply switching instruction is input when the power supply is in the IG state, the in-vehicle device 112 communicates with the portable device 111 to acquire and collate the ID code (step S28). Then, based on the result of confirming the collation result (step S29), the power source is switched to starter start (step S30) and the engine is started (step S31), or the power source is left in the IG state.

  FIG. 6 shows still another embodiment of the flow of the power supply switching process. In this embodiment, the ID code authentication confirmation unit 110 includes the portable device 111 and the in-vehicle device 112, and the authentication condition determination unit 120 determines whether or not the ID code needs to be verified based on the elapsed time. I try to let them.

  That is, when a power supply switching instruction is input in a state where the power is off (step S41), the in-vehicle device 112 communicates with the portable device 111 to acquire and collate the ID code (step S42). Then, based on the result of confirming the collation result (step S43). The power source is switched to the ACC state (step S44), or the power source is kept off.

  Next, when the power supply switching instruction is input when the power supply is in the ACC state, it is determined whether or not the elapsed time from the collation of the ID code in the above step S42 is within the allowable time (step S45). When the time is within the allowable time, the power source is switched to the IG state via the power source switching unit 130 (step S46).

  On the other hand, when the elapsed time exceeds the allowable time, the in-vehicle device 112 communicates with the portable device 111 to acquire and collate the ID code (step S47). Then, based on the result of confirming the collation result (step S48), the power source is switched to the IG state (step S46), or the power source is left in the ACC state.

  Further, when the power supply switching instruction is input when the power supply is in the IG state, the authentication condition determination unit 120 determines whether the elapsed time is within the allowable time (step S49), and when the elapsed time is within the allowable time Then, the power source is switched to starter start via the power source switching means 130 (step S50), and the engine is started (step S51).

  On the other hand, when the elapsed time exceeds the allowable time, the in-vehicle device 112 communicates with the portable device 111 to acquire and collate the ID code (step S52). Then, based on the result of checking the collation result (step S53), the power source is switched to starter start (step S50) and the engine is started (step S51), or the power source is left in the IG state.

Still another embodiment of the vehicle power supply control device of the present invention will be described below. In this embodiment, the immobilizer device is mounted on the vehicle, and the ID code authentication confirmation unit 110 inputs and uses the verification result by the immobilizer device.
The immobilizer device includes a portable device possessed by an authorized user and an in-vehicle device installed in the vehicle. When the portable device is in the vicinity of the in-vehicle device, the in-vehicle device is an ID of the portable device. Match the code. The ID code authentication confirmation means 110 inputs the result verified by the immobilizer device.

  The ID code authentication confirmation unit 110 turns on the collation result when collated with the regular ID code in the in-vehicle device, and outputs the collation result to the control unit 140 as necessary. On the other hand, if the ID code of the portable device is not regular or the portable device is not in the vicinity of the in-vehicle device, the collation result is turned off and the collation result is output to the control means 140 as necessary. To do.

  As still another embodiment of the vehicular power supply control device of the present invention, the ID code authentication confirmation unit 110 may cause the immobilizer device to collate the ID code as necessary. For example, when the control unit 140 requests the ID code authentication confirmation unit 110 to confirm the authorized user, the ID code authentication confirmation unit 110 may request the immobilizer device to check the ID code. it can.

  In addition, the description in this Embodiment shows an example of the vehicle power supply control device which concerns on this invention, and is not limited to this. The detailed configuration and detailed operation of the vehicle power supply control device in the present embodiment can be changed as appropriate without departing from the spirit of the present invention.

FIG. 1 is a flowchart showing a basic flow of power supply switching according to the embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of the vehicle power supply control device according to the embodiment of the present invention. FIG. 3 is a block diagram showing an embodiment of the ID code authentication confirmation unit 110. FIG. 4 is a flowchart showing an embodiment in which power supply switching processing is performed based on the elapsed time since the last ID code verification. FIG. 5 is a flowchart showing an example of a flow of power supply switching processing when the ID code authentication confirmation means includes a portable device and an in-vehicle device. FIG. 6 is a flowchart showing an embodiment in which the power supply switching process is performed based on the elapsed time when the ID code authentication confirmation means includes a portable device and an in-vehicle device. FIG. 7 is a flowchart showing a schematic processing flow of conventional power supply switching.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Vehicle power supply control apparatus 110 ... ID code authentication confirmation means 111 ... Portable machine 112 ... In-vehicle apparatus 120 ... Authentication condition determination means 130 ... Power supply switching means 140 ... Control Means 200 ... Power supply switching instruction 210 ... Power supply device

Claims (3)

A vehicle power supply control device for controlling switching of a power supply state of a vehicle,
A portable device possessed by a regular user, an ID code for authenticating the regular user from the portable device and collated with a regular ID code stored in advance, and the ID code and the regular ID code are ID code authentication confirmation means having an in-vehicle device that authenticates the authorized user when they match ,
When the elapsed time since the authentication of the authorized user by the ID code authentication confirmation means is within a predetermined allowable time, it is determined that the authentication of the authorized user is unnecessary, and when the elapsed time exceeds the allowable time Authentication condition determination means for determining that authentication of the regular user is necessary ;
Power switching means for switching the power state ;
Control means for controlling the power supply switching means,
When the control unit inputs a predetermined power switching instruction when the power state is off, the control unit requests the ID code authentication confirmation unit to control the power switching unit when the authorized user is authenticated. The power supply state is turned on, and after the power supply state is turned on, the authentication condition determination means is requested every time the power supply switching instruction is input to determine whether the authorized user needs to be authenticated. is determined, the authentication condition or the determination means determines not to require authentication of the authorized user, or the authentication condition determining means is required and then determine authentication of the authorized user and requesting the ID code authentication check means Then , when authentication of the authorized user is performed, the power supply switching device controls the power supply switching means to switch the power supply state . The vehicle includes an immobilizer device having means for authenticating the authorized user,
The vehicle power supply control device according to claim 1, wherein the ID code authentication confirming unit authenticates the authorized user according to the authorized user authentication result by the immobilizer device. The vehicle power supply switching device according to claim 1 or 2, wherein the power supply switching instruction includes a switching instruction to a power-on state .

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