JP2011108166A - Management device for whistling of security alarm system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a management device for whistling of a security alarm capable of more accurately whistling an alarm for security. <P>SOLUTION: In an electronic key 2, a battery remaining quantity detecting part 27 detects the remaining quantity of a battery 20, and transmits a battery remaining quantity notification M together with an ID code to a vehicle 1 during smart communication with the vehicle 1. Upon receiving the battery remaining quantity notification M, a battery remaining quantity determining part 30 determines whether the battery remaining quantity is equal to or less than a value near lower limit. When the battery remaining quantity is the value near lower limit, a number of remaining times notifying part 31 notifies a user of the number of remaining allowable times of using the electronic key 2. When the number of remaining allowable using times is zero, a vehicle operation by the electronic key 2 is rejected even if smart collation is established with the electronic key 2. In such a case, though a mechanical key 25 of the electronic key 2 performs door lock release when a normal user gets in the vehicle 1, an alarm 22 is not whistled even though the mechanical key 25 performs door lock release because ID collation is established under this situation. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sound management device for a security alarm system that sounds an alarm when a boarding that does not take a normal operation action is detected.

  2. Description of the Related Art Conventionally, many vehicles are widely equipped with an electronic key system that transmits an ID code wirelessly from an electronic key to the vehicle and causes the vehicle to perform ID verification. In this electronic key system, there is a key operation free system in which an electronic key automatically returns an ID code to a vehicle in response to a request transmitted from the vehicle to execute ID collation. In the key operation free system, door lock / unlock is permitted or executed when ID verification is established outside the vehicle, and engine start operation is permitted when ID verification is established inside the vehicle.

  In addition, for the purpose of preventing vehicle theft, the vehicle is equipped with a security alarm system (see Patent Document 1) that sounds an alarm as an alarm when it is detected that the door is opened without ID verification using an electronic key. Some are also available. If the vehicle is equipped with an alarm security system, even if the window glass is broken and the door lock is unlocked, and the door is opened illegally, an alarm sounds at the time of the door opening operation. For this reason, the theft is notified to the surroundings, the alarm is threatened by the alarm, and the vehicle can be protected from theft.

JP 2008-149865 A

  By the way, since the electronic key operates using a battery as a power source, the battery will run out if used for a long time. When the battery of the electronic key is exhausted, the ID code cannot be transmitted from the electronic key, so that it is not possible to execute ID collation by radio using the electronic key. The electronic key stores a mechanical key for emergency, assuming such a battery exhaustion. Therefore, when the battery runs out, a door lock locking / unlocking operation and an engine starting operation are performed using a mechanical key attached to the electronic key.

  However, the security alarm system sounds an alarm unconditionally when the door is opened without wireless ID verification. For this reason, if the authorized user tries to unlock the door lock of the vehicle when the battery of the electronic key is exhausted, if the door lock unlocking operation is performed with the mechanical key provided with the electronic key, the authorized user is not authorized. Even an alarm sounds.

  Here, it is only necessary to immediately know how to stop the alarm. However, since such an alarm action occurs only in the rare situation that the user runs out of the battery of the electronic key, I am confused and cannot immediately stop. By the way, in general, many electronic keys have batteries for several years. For this reason, since it feels stressed that the alarm sounding state continues, there has been a demand for some coping method that does not fall into such a situation.

  An object of the present invention is to provide a security alarm sound management device capable of sounding a security alarm more accurately.

  In order to solve the above problems, in the present invention, an ID code is wirelessly transmitted from an electronic key to a key communication target, and used for an electronic key system in which the operation of the key communication target is permitted or executed if ID verification is established. And detecting the remaining battery level of the electronic key in the sound management device of the security alarm system that sounds an alarm on the key communication target when the key communication target is operated without ID verification of the electronic key system being established. A battery remaining amount detecting means, a determining means for determining whether or not the battery remaining amount takes a value less than or equal to a lower limit value before a lower limit, and when the battery remaining amount becomes less than or equal to the lower limit value, The gist of the invention is that it includes a limiting unit that limits the operation of the key communication target by the electronic key in a period in which the remaining amount includes at least a lower limit.

  According to this configuration, when the battery level of the electronic key falls below the lower limit value, use of the electronic key is restricted before the lower limit value is reached, and free operation of the key communication target using the electronic key is disabled. . For this reason, the user operates the key communication target with the mechanical key provided in the electronic key for emergency, but under this condition, the electronic key that moves with the remaining remaining battery level and the key communication target are operated. Since the ID verification itself is established, the security alarm system does not operate even if the authorized user operates the key communication target with the mechanical key. Therefore, even if the authorized user operates the key communication target using the mechanical key, it is possible to prevent the alarm from sounding. In addition, since the electronic key can be freely used, the user knows that the electronic key has run out of battery, so that it is possible to operate the key communication target with the electronic key without any problem after the battery replacement work promptly. .

  In the present invention, there is provided a notification executing means for executing ID verification under a situation where the remaining battery level is equal to or lower than the lower limit value, and executing a user assistance notification operation on condition that the ID verification is established. The gist.

  According to this configuration, when the alarm enters the operation start, the user assistance notification operation is executed, so that the user should be notified of the operation to be performed in a situation where the remaining battery level is approaching the lower limit value. Is possible.

  In the present invention, the notification operation is a use count notification operation for notifying the remaining use permission count with the battery remaining in the electronic key, and the limiting means sets the remaining use permission count to zero. Then, the gist of stopping the operation of the key communication target by the electronic key while the ID collation executed by the remaining battery power remaining in the electronic key is established.

  According to this configuration, since the remaining number of times of use permission after the remaining battery level becomes equal to or lower than the lower limit value is notified, it is possible to notify the user how many times the electronic key can be used as soon as the remaining battery level is exhausted. It becomes possible.

The gist of the present invention is that the notification operation is an operation guidance notification operation for guiding an operation to be performed when the electronic key is out of power.
According to this configuration, since the operation to be performed by the user when the electronic key runs out of battery is guided, it is not necessary to confuse the user as to what to do when the electronic key becomes unusable. .

The gist of the present invention is that the notification executing means is provided in the key communication target and executes the notification operation on the key communication target side.
According to this configuration, since the notification operation for assisting the user when the battery is about to run out is executed on the key communication target side, it is possible to output the notification operation in an easy-to-understand manner on a large display or speaker provided for the key communication target It becomes possible.

  In the present invention, the notification execution means is provided in the key communication target, and confirms the establishment of the ID verification after the remaining battery level is equal to or lower than the lower limit value, and wirelessly sends a contact notification to the electronic key. A notification transmission means provided on the electronic key, and a notification processing means for executing the notification operation based on the notification when the notification is received, wherein the notification execution means includes the notification transmission means and By providing the notification processing means, the gist of executing the notification operation on the electronic key side.

  According to this configuration, since the notification operation for assisting the user when the battery is about to run out is executed on the electronic key side, this type of notification operation can be executed with the electronic key at hand of the user.

  According to the present invention, a security alarm can be sounded more accurately.

The block diagram which shows schematic structure of the blowing management apparatus of the security alarm in one Embodiment. The voltage waveform figure which shows the battery remaining charge of an electronic key. (A)-(f) is explanatory drawing which shows the flow of operation when an electronic key becomes unusable and a door lock is unlocked with a mechanical key. The block diagram which shows schematic structure of the other blowing management apparatus in another example.

Hereinafter, an embodiment of a security alarm sound management device embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1, the vehicle 1 is provided with a key operation free system 3 that automatically executes ID (Identification) verification when the electronic key 2 approaches the vehicle 1. This key operation free system 3 includes a smart entry system in which a door lock is unlocked and unlocked in a series of door opening and closing operations without actually performing a key operation, and a push type engine installed in the vehicle. There is a one-push engine start system that can start the engine only by pressing the switch 4. The vehicle 1 corresponds to a key communication target, and the key operation free system 3 corresponds to an electronic key system.

  In this case, the vehicle 1 includes a verification ECU (Electronic Control Unit) 5 that performs key verification (ID verification) with the electronic key 2, a main body ECU 6 that manages the operation of an on-vehicle motor, a relay, and the like, and an engine ( An engine ECU 7 is provided for managing the operation (not shown). The verification ECU 5 and the main body ECU 6 are connected via a LIN (Local Interconnect Network) 8, and the main body ECU 6 and the engine ECU 7 are connected via a CAN (Controller Area Network) 9. In the memory (not shown) of the verification ECU 5, the ID code of the electronic key 2 that forms a pair with the vehicle 1 is registered. The engine switch 4 is connected to both the verification ECU 5 and the main body ECU 6.

  The verification ECU 5 receives an out-of-vehicle transmitter 10 that transmits radio waves in the LF band outside the vehicle, an in-vehicle transmitter 11 that transmits radio waves in the LF band inside the vehicle, and radio waves in the UHF (Ultra High Frequency) band. The vehicle tuner 12 is connected. The vehicle transmitter 10 and the vehicle transmitter 11 transmit a request signal Srq as an ID transmission request to the electronic key 2 by LF band radio waves, and try to establish so-called smart communication.

  A door lock motor 13 is connected to the main body ECU 6 as a drive source for performing door lock locking / unlocking. Also connected to the main body ECU 6 are an ACC (Accessory) relay 14 connected to an in-vehicle accessory, an IG (Ignition) relay 15 connected to various electrical components of the traveling system, and a starter relay 16 connected to an engine starter (not shown). Has been.

  On the other hand, the electronic key 2 is provided with a communication control unit 17 that performs overall control of the operation of the electronic key 2. An ID code is registered in the memory (not shown) of the communication control unit 17 as an ID unique to the key. The communication control unit 17 is connected to an LF receiver 18 capable of receiving LF band radio waves and a UHF transmitter 19 capable of transmitting UHF band radio waves. Further, the electronic key 2 includes a battery 20 as a key power source, and radio waves are transmitted and received based on the power of the battery 20.

  When the electronic key 2 is outside the vehicle, the request signal Srq is intermittently transmitted from the outside transmitter 10. At this time, when the electronic key 2 enters the outside communication area of the request signal Srq, the electronic key 2 responds to the request signal Srq and returns an ID signal Sid with a radio wave in the UHF band. The ID signal Sid includes the ID code of the electronic key 2. When the vehicle tuner 12 receives the ID signal Sid and establishes smart communication outside the vehicle (external communication), the verification ECU 5 executes external verification as ID verification (smart verification). And if this outside vehicle collation is materialized, door lock locking / unlocking by main body ECU6 will be permitted or performed.

  When it is detected by the courtesy switch 21 that the driver has boarded, for example, the in-vehicle transmitter 11 starts transmission of the request signal Srq instead of the out-of-vehicle transmitter 10. At this time, when smart communication (in-vehicle communication) is established by entering the in-vehicle communication area of the in-vehicle transmitter 11, the verification ECU 5 executes in-vehicle verification as ID verification (smart verification). And if this in-vehicle collation is materialized, the power supply transition operation and engine starting operation by engine switch 4 (engine ECU7) will be permitted.

  The vehicle 1 is provided with a security alarm system 23 that sounds an alarm 22 as an alarm when it is detected that the door is opened without the ID verification by the electronic key 2 being established. The security alarm system 23 may notify the surroundings of the theft by alarm 22 sounding when the door is opened by illegally unlocking the door lock from inside the vehicle, for example, by a thief breaking the glass, or Or threaten against theft. The sounding state of the alarm 22 stops when, for example, the engine is switched to the starting state. In this case, the main body ECU 6 is provided with an alarm operation unit 24 that comprehensively manages the operation of the security alarm system 23. The main body ECU 6 is connected to an alarm 22 made of, for example, a horn or a buzzer.

  When the alarm switch 24 detects that the door has been opened by the courtesy switch 21, the alarm operating unit 24 checks with the verification ECU 5 whether or not ID verification has been established. At this time, the alarm operating unit 24 does not operate and does not sound the alarm 22 when receiving a notification that the verification is established from the verification ECU 5. That is, the alarm 22 is not sounded if the door opening operation is performed after the smart verification with the electronic key 2 is completed. On the other hand, when the alarm operating unit 24 receives a notification that the collation is not established from the collation ECU 5, the alarm operating unit 24 recognizes that the door opening operation has been performed without the smart collation being established with the electronic key 2, and the vehicle 1 may have been stolen. Since there is a possibility, the alarm 22 is sounded.

  By the way, in the electronic key 2, a mechanical key 25 is housed for emergency so that the door lock can be locked and unlocked and the engine start operation can be performed even when the battery of the electronic key 2 is dead. The mechanical key 25 is a key for confirming whether the ID collation is correct by inserting a key plate into the key cylinder and turning it. Therefore, if the electronic key 2 has run out of battery, even the user needs to unlock the door with the mechanical key 25. However, in the conventional security alarm system 23, if the door lock is unlocked by the mechanical key 25 in a situation where the smart verification by the electronic key 2 is not established, the alarm 22 sounds unconditionally. Even so, if the door lock is unlocked with the mechanical key 25 when the battery of the electronic key 2 is exhausted, the alarm 22 enters the sounding state, which makes it troublesome.

  Therefore, in the security alarm system 23 of this example, even if the authorized user unlocks the door with the mechanical key 25 when the electronic key 2 falls into a battery exhausted state (a state close to the battery exhaustion), the alarm 22 A sound management device 26 is provided so as not to sound. The sound management device 26 reduces the frequency with which the security alarm system 23 mounted on the vehicle 1 sounds an alarm 22 to a legitimate user, thereby reducing stress on the legitimate user.

  In this case, the communication control unit 17 is provided with a remaining battery level detection unit 27 that detects the remaining voltage of the battery 20 (hereinafter referred to as the remaining battery level Vx). For example, when the electronic key 2 performs smart communication, the remaining battery level detection unit 27 monitors the voltage of the battery 20 to detect the remaining battery level Vx, and the remaining battery level Vx is equal to or lower than the lower limit value Vk (see FIG. 2). See if it takes a value. As shown in FIG. 2, the lower limit vicinity value Vk is set to a voltage that the electronic key 2 cannot transmit, that is, a value slightly higher than the lower limit value Vdw. Therefore, the remaining battery level detection unit 27 detects whether or not the battery voltage is in a state close to battery exhaustion. In addition, the battery remaining amount detection part 27 comprises a battery remaining amount detection means.

  The communication control unit 17 is provided with a remaining battery level notification unit 28 that notifies the vehicle 1 of the remaining battery level Vx detected by the remaining battery level detection unit 27 during smart communication. When the ID signal Sid is transmitted by smart communication, the battery remaining amount notification unit 28 transmits the ID signal Sid including the battery remaining amount notification M together with the ID code. The battery remaining amount notification M notifies whether the battery remaining amount Vx takes a value higher than the lower limit vicinity value Vk or whether the battery remaining amount Vx takes a value less than or equal to the lower limit vicinity value Vk. It is constructed with a bit code of “1”. In addition, the battery remaining amount detection part 27 comprises a battery remaining amount detection means.

  On the other hand, the verification ECU 5 is provided with a battery remaining amount notification acquisition unit 29 that acquires a remaining battery amount notification M from the electronic key 2. The battery remaining amount notification acquisition unit 29 acquires the remaining battery amount notification M from the ID signal Sid when the ID signal Sid is received from the electronic key 2 by smart communication. The battery remaining amount notification acquisition unit 29 constitutes a battery remaining amount detecting unit.

  The verification ECU 5 is provided with a remaining battery level determination unit 30 that determines the level of the remaining battery level Vx based on the acquired remaining battery level notification M. When the battery remaining amount determination unit 30 confirms that the battery remaining amount notification M includes a notification that the battery is about to run out (for example, a signal of bit 1), the battery remaining amount determination unit 30 recognizes that the battery remaining amount Vx of the electronic key 2 will soon be exhausted. . Further, when the remaining battery level determination unit 30 confirms that the remaining battery level notification M includes a notification that the remaining battery level Vx is sufficient (for example, a signal of bit 0), the remaining battery level of the electronic key 2 is confirmed. Recognize that the quantity Vx remains sufficient. Note that the battery remaining amount determination unit 30 corresponds to a determination unit.

  The verification ECU 5 is configured to notify the user of the remaining number of times that the vehicle 1 can be operated with the electronic key 2 (hereinafter referred to as the remaining use permission number N) based on the determination result of the battery remaining amount determination unit 30, that is, the use number notification. A remaining number notifying unit 31 for performing the operation is provided. The remaining number notification unit 31 starts a countdown of the remaining use permission number N from the time when the battery remaining amount determination unit 30 first determines that the battery is nearly exhausted, and every time the electronic key 2 is used, the remaining use permission number Decrement N one by one. The remaining number notifying unit 31 executes ID verification each time communication with the electronic key 2 is established when the remaining battery level Vx is equal to or lower than the lower limit vicinity value Vk. If the verification is established, the electronic key 2 is used. As a result, the remaining use permission count N is decreased by one. As shown in FIG. 2, the remaining use permission number N is set to a value in which the remaining battery level Vx remains in the electronic key 2 even when the number value becomes zero. The remaining number notification unit 31 constitutes a notification execution unit.

  The remaining number notification unit 31 outputs data related to the remaining use permission number N (remaining use permission number data) to the meter ECU 32 and presents the remaining use permission number N to the user. The meter ECU 32 performs display control of the meter 33 of the in-vehicle instrument, and is connected to the main body ECU 6 and the engine ECU 7 via the CAN 9 and is connected to the verification ECU 5 and the main body ECU 6 via the CAN 34.

  The meter ECU 32 is provided with a remaining number display processing unit 35 that notifies the user of the remaining use permission number N based on the remaining use permission number data acquired from the remaining number notification unit 31. The remaining number display processing unit 35 notifies the user of the remaining use permitted number N, for example, by displaying characters by a message, the number of blinking warning lamps, or the like. The remaining number display processing unit 35 constitutes a notification execution unit.

  The verification ECU 5 is provided with a restriction operation execution unit 36 that stops the vehicle operation by the electronic key 2 when the remaining use permission count N becomes zero. When the remaining use permission count N becomes 0, the limit operation execution unit 36 performs smart verification with the electronic key 2 with the battery 20 remaining slightly, but vehicle operation based on smart verification establishment, that is, smart door unlocking, smart Door locking, vehicle power supply transition, etc. are prohibited. For this reason, since the electronic key 2 is in an unusable state, the vehicle 1 cannot be operated even if the electronic key 2 is held, thereby notifying the user that the electronic key 2 is out of battery. . Even if the electronic key 2 becomes unusable, the smart verification is established between the vehicle 1 and the electronic key 2 that is moved by the battery 20 that remains slightly. Even if operated, the security alarm system 23 does not operate on the condition that the smart verification is established. The restricting operation executing unit 36 corresponds to a restricting unit.

  The verification ECU 5 has an operation guidance notification unit 37 that performs an operation for guiding the user to perform an operation to be performed when the electronic key 2 runs out of battery after the remaining use permission count N becomes 0, that is, an operation guidance notification operation. Is provided. In addition, the meter ECU 32 is provided with an operation guidance display processing unit 38 that executes this operation guidance notification operation in cooperation with the operation guidance notification unit 37. When the remaining use permission count N becomes 0, the operation guidance notification unit 37 notifies the operation guidance display processing unit 38 to that effect. When the operation guidance display processing unit 38 obtains a notification that the remaining use permission count N is 0 from the operation guidance notification unit 37, the operation guidance display processing unit 38 guides the engine start method using the mechanical key 25 to the user using the meter 33 or the like. The operation guidance notification unit 37 and the operation guidance display processing unit 38 constitute notification execution means.

Next, the operation of the sound management device 26 of this example will be described with reference to FIG.
As shown in FIG. 3A, during smart communication, the remaining battery level detection unit 27 includes the remaining battery level notification M in the ID signal Sid and transmits the ID signal Sid. At this time, if the remaining battery level Vx is higher than the lower limit vicinity value Vk, the remaining battery level detecting unit 27 notifies the remaining battery level M as a remaining battery level notification M (for example, a signal of bit 0). If the remaining battery level Vx is equal to or lower than the lower limit vicinity value Vk, a notification about battery exhaustion (for example, a signal of bit 1) is transmitted as the remaining battery level notification M.

  When the ID signal Sid is received by the vehicle 1, the battery remaining amount detection unit 27 acquires the battery remaining amount notification M included in the ID signal Sid. Then, the remaining battery level determination unit 30 refers to the remaining battery level notification M and confirms the remaining battery level of the electronic key 2. At this time, if the battery remaining amount notification M is bit 0, it is determined that the battery remaining amount Vx is sufficiently remaining, and if the battery remaining amount Vx is bit 1, it is determined that the battery 20 is almost exhausted. To do.

  When recognizing that the electronic key 2 is about to run out of battery, the remaining number notifying unit 31 limits the number of times the electronic key 2 is used to a certain number of times, and sets this as the remaining number N of permitted use. As a result, the electronic key 2 can only operate the vehicle 1 as many times as the remaining use permission count N. The remaining use permission count N is decreased by one each time the door lock is unlocked, the door lock is locked, or the engine is started with the electronic key 2, for example. Become.

  Further, as shown in FIG. 3B, the remaining number of times notification unit 31 determines the remaining number of times of permitted use N at the time when the remaining number of permitted times of use N has been determined in order to notify the user of the number of times of remaining permitted use N as a warning. Is output to the remaining number display processing unit 35. The remaining number display processing unit 35 notifies the user of the remaining use permission number N based on the remaining use permission number data obtained from the remaining number notification unit 31. The notification of the remaining use permission number N is executed by, for example, issuing a message with the meter 33 or displaying the number of times the warning lamp is turned on.

  When the remaining number of times notification unit 31 confirms that the remaining number of permitted uses N has become 0, the remaining number of times notification unit 31 notifies the limit operation execution unit 36 to that effect. When the limit operation execution unit 36 confirms that the remaining use permission count N becomes 0, the limit operation execution unit 36 stops the vehicle operation using the electronic key 2. That is, as shown in FIG. 3C, the electronic key 2 becomes unusable, and the vehicle 1 cannot be moved even if the electronic key 2 is held. Therefore, even if the user tries to get on the parked vehicle 1, the smart door unlocking is prohibited at this time, so the user cannot get in the vehicle.

  Accordingly, the user notices that the door lock is not unlocked even if the user holds the electronic key 2, and recognizes that the electronic key 2 has run out of battery. Therefore, as shown in FIG. 3D, the user determines that the door lock cannot be unlocked with the electronic key 2, and proceeds to an operation of unlocking the door lock with the mechanical key 25 housed in the electronic key 2. To do. Therefore, even when the electronic key 2 is in an unusable state, the door lock can be unlocked, and it is possible to get into the vehicle without any problem.

  Incidentally, in this case, although the electronic key 2 is in an unusable state (smart door unlocking state), the electronic key 2 performs smart communication with the verification ECU 5 using the remaining battery remaining amount Vx as power. In this state, the collation is established. Therefore, even if the user unlocks the door with the mechanical key 25, the security alarm system 23 does not operate as long as the smart verification is established. That is, even if the door lock is unlocked with the mechanical key 25, the alarm 22 does not sound. For this reason, it does not become a situation where the alarm 22 is sounded to the authorized user.

  At this time, as shown in FIG. 3E, the operation guidance notifying unit 37 notifies the operation guidance start on the condition that smart collation is established in order to guide the engine starting method using the mechanical key 25. Is output to the operation guidance display processing unit 38 of the meter ECU 32. When the operation guidance display processing unit 38 receives the notification of the operation guidance start, the operation guidance display processing unit 38 displays a procedure for starting the engine with the mechanical key 25. In order to start the engine with the mechanical key 25, the electronic key 2 is held over the engine switch 4, ID collation (immobilizer collation) is established with a transponder (not shown) in the electronic key 2, and then the engine switch 4 This is done by pressing.

  Examples of the operation guidance include message display on the meter 33, multi-information using the display 39 of the car navigation system, and voice guidance using an in-vehicle speaker. The boarded user performs an engine start operation by the mechanical key 25 along this guidance before the alarm 22 is in a sounding state. Therefore, even if the user is unfamiliar with the operation of the mechanical key 25, the user can start the engine without any problem.

  Further, since the user recognizes that the electronic key 2 has run out of battery because the electronic key 2 cannot be used, immediately after this ride, as shown in FIG. Replace the battery. Therefore, since the battery 20 of the electronic key 2 is fully charged, the electronic key 2 returns to the usable state from the next smart communication, and the next time the user gets on the vehicle 1 with the electronic key 2 without any problem. It becomes possible to operate.

  If the battery 20 is not replaced while the electronic key 2 is in an unusable state, the battery runs out of time and smart communication cannot be executed. Under this situation, when the door lock is unlocked with the mechanical key 25, the security alarm system 23 operates and the alarm 22 sounds. Therefore, it is necessary to replace the battery of the electronic key 2 promptly when the electronic key 2 becomes unusable.

  Therefore, in this example, when the remaining battery level Vx of the electronic key 2 becomes equal to or lower than the lower limit near value Vk, the user is notified of the remaining use permission count N, assuming that the battery 20 will run out soon. This remaining use permission count N is set to a value that allows ID verification even when the count becomes zero. When the electronic key 2 is used several times and the remaining use permission count N becomes 0, the electronic key 2 is disabled. Accordingly, since the user uses the mechanical key 25 before the remaining battery level Vx reaches the lower limit value Vdw, it is not necessary to sound the alarm 22 for the authorized user. Further, since it is possible to prompt the user to replace the battery, the vehicle 1 can be operated with the electronic key 2 without any problem after the battery replacement.

According to the configuration of the present embodiment, the following effects can be obtained.
(1) When the remaining battery level Vx of the electronic key 2 is equal to or lower than the lower limit vicinity value Vk, the smart communication itself remains executable, but the vehicle operation using the electronic key 2 is disabled. Therefore, when the user tries to get on the vehicle 1 in this state, the door lock is unlocked by the mechanical key 25 provided on the electronic key 2. Since the smart collation itself is established between the electronic key 2 that moves with the amount Vx and the vehicle 1, even if the authorized user unlocks the door with the mechanical key 25 and opens the door, the security alarm system 23 Does not work. Therefore, even if a legitimate user performs the door opening operation using the mechanical key 25, the alarm 22 is not blown. Moreover, since the user is prompted to change the battery because the electronic key 2 is disabled, the user can operate the vehicle 1 with the electronic key 2 without any problem in Too within a quick battery replacement operation. it can.

  (2) After the remaining battery level Vx becomes equal to or lower than the lower limit near value Vk, the user is notified of the remaining use permission count N of the electronic key 2 that can operate with the remaining remaining battery level Vx. It is possible to indicate to the user how many times the key 2 can be used.

  (3) When the remaining use permission count N becomes 0 and the electronic key 2 becomes unusable, the engine start method using the mechanical key 25 is indicated to the user by the meter 33, multi-information, voice guide or the like. Notice. For this reason, when the electronic key 2 becomes in an unusable state, it is immediately possible to know what operation should be performed before starting the engine, and the user is not confused.

  (4) The operation number notification operation for notifying how many times the electronic key 2 can be used and the operation guidance notification operation for guiding the engine start method using the mechanical key 25 are executed on the vehicle 1 side. For this reason, these notifications can be executed to the user in an easy-to-understand manner using the meter 33, the display 39, the speaker, and the like provided in the vehicle 1.

Note that the embodiment is not limited to the configuration described so far, and may be modified as follows.
The usage number notification operation is not limited to being performed on the vehicle 1 side, and may be performed on the electronic key 2 side, for example. In this case, as shown in FIG. 4, the verification ECU 5 of the electronic key 2 is provided with a remaining number notification transmission unit 41 that transmits the remaining number of times notification T for notifying the remaining number N of permitted use during smart communication. Based on the frequency notification T, a key-side notification execution unit 42 that notifies the remaining use permission frequency N on the electronic key 2 side is provided. Then, for example, at the end of the smart communication, the remaining number of times notification T is transmitted from the vehicle 1 to the electronic key 2, and the remaining number of permitted usage times N is notified on the electronic key 2 side. At this time, as a notification method on the electronic key 2 side, for example, if a display (liquid crystal screen) is mounted on the electronic key 2, it may be displayed on the electronic key 2, or an indicator of the electronic key 2 may be displayed. You may only flash. Note that the remaining number notification transmission unit 41 corresponds to a notification transmission unit, the key side notification execution unit 42 corresponds to a notification processing unit, and the remaining number notification T corresponds to a contact notification.

The usage count notification operation is not limited to the message display on the meter 33, and any mode may be used as long as the count is known.
The use count notification operation is not always necessary, and this process may be omitted. That is, when the remaining battery level Vx becomes equal to or lower than the lower limit vicinity value Vk, the electronic key 2 may be immediately disabled.

The count of the remaining use permission count N is not limited to the operation of the vehicle 1 with the electronic key 2 but may be, for example, the number of times ID verification is established.
The operation guidance notification operation is not limited to being performed on the vehicle 1 side, but may be performed on the electronic key 2 side as in the above-described remaining number notification.

For example, the remaining battery level determination unit 30 may be provided on the electronic key 2 side, and the electronic key 2 side may be notified of how many times the battery remaining power (voltage information) is notified.
The notification operation performed when the remaining battery level Vx is approaching is not limited to the notification of the remaining use permission count N or the procedure of the engine starting method using the mechanical key 25. For example, it may be a notification for invoking battery replacement, for example, and any notification may be adopted.

The notification operation is not limited to being executed at the time of smart communication. For example, when a mail function is used, a notification may be given to the user's mobile phone or the like in advance.
The notification of the remaining battery level Vx is not limited to transmitting from the electronic key 2 side a binary value indicating whether the remaining battery level Vx is equal to or lower than the lower limit vicinity value Vk. For example, a detection signal at a level corresponding to the remaining battery level Vx may be transmitted from the electronic key 2 to the vehicle 1 and the vehicle 1 may calculate the remaining battery level Vx from the value of the detection signal.

  When various notifications are made on the electronic key 2 side, a remote function such as DCM (Data Communication Module) may be used to send a mail to a user registration address (such as a mobile phone).

  The restriction state that the electronic key 2 can take when the remaining battery level Vx becomes equal to or lower than the lower limit value Vk is not limited to a form that prohibits vehicle operation in accordance with the establishment of the collation, although ID collation can be executed. . In short, if the electronic key 2 cannot be used as usual, a decrease in the remaining battery level Vx can be triggered by it, so any form of the restricted state may be adopted.

  -The method of releasing the operation start (sounding state) of the alarm 22 is not limited to switching the engine to start, and other types such as operating the outside door handle knob with a specific number of times and procedures are adopted. May be.

The battery 20 is not limited to a primary battery such as a button battery, and may be a rechargeable secondary battery. In the case of a secondary battery, it can be a capacitor.
The key operation free system 3 is not limited to having different frequencies in the forward path and the return path of mutual communication, and may have the same frequency. Further, the frequency used in the key operation free system 3 is not limited to LF and UHF, and other bands may be used.

  The electronic key system is not limited to the configuration of the key operation free system 3 alone, and may include a wireless key system that operates the vehicle 1 by remote operation by button operation of the electronic key 2, for example.

  The sound management device 26 is not limited to being mounted on the vehicle 1 and may be applied to other devices and devices such as houses.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle as a key communication object, 2 ... Electronic key, 3 ... Key operation free system as an electronic key system, 20 ... Battery, 22 ... Alarm, 23 ... Security alarm system, 26 ... Sound management device, 27 ... Battery remaining A battery remaining amount detecting unit constituting the amount detecting means, 28... A battery remaining amount notifying unit constituting the battery remaining amount detecting means, 29... A battery remaining amount notification obtaining unit constituting the battery remaining amount detecting means, 30. The remaining battery number determination unit, 31 ... the remaining number notification unit constituting the notification execution unit, 35 ... the remaining number display processing unit constituting the notification execution unit, 36 ... the limited operation execution unit as the limitation unit, 37 ... the notification execution unit 38: Operation guidance display processing unit constituting notification execution means, 41: Remaining number of times notification transmission part as notification transmission means, 42: Key side notification actual as notification processing means Parts, Vx ... battery level, Vk ... lower neighborhood value, Vdw ... lower limit, N ... remaining use permit count, T ... remaining count notification as contact notifications.

Claims (6)

An ID code is wirelessly transmitted from the electronic key to the key communication target, and if the ID verification is established, it is used for an electronic key system in which the operation of the key communication target is permitted or executed, and the ID verification of the electronic key system is not established. In the sound management device of the security alarm system that sounds an alarm in the key communication target when the key communication target is operated,
Battery remaining amount detecting means for detecting the remaining amount of the battery of the electronic key;
A determination means for determining whether or not the remaining battery level takes a value less than or equal to a lower limit value before the lower limit;
When the remaining battery level is equal to or lower than the lower limit value, the control unit includes a limiting unit that limits operation of the key communication target by the electronic key in a period in which the remaining battery level includes at least the lower limit value. Sound alarm management device for security alarm system. The information processing apparatus includes a notification execution unit configured to execute ID verification under a situation where the remaining battery level is equal to or less than the lower limit value, and to execute a user assistance notification operation on condition that the ID verification is established. Item 4. A sound management device for a security alarm system according to Item 1. The notification operation is a use count notification operation for notifying the remaining use permission count in a state where the battery remaining amount is left in the electronic key,
When the remaining use permission count becomes 0, the restriction means stops the operation of the key communication target using the electronic key while the ID verification executed based on the remaining battery level remaining in the electronic key is established. The sound management device for a security alarm system according to claim 2. The sound management device for a security alarm system according to claim 2 or 3, wherein the notification operation is an operation guidance notification operation for guiding an operation to be performed when the electronic key is out of power. 5. The security alarm system according to claim 2, wherein the notification execution unit is provided in the key communication target and executes the notification operation on the key communication target side. 6. Management device. The notification execution means includes
A notification transmitting means that is provided in the key communication target and that confirms the establishment of the ID verification after the remaining battery level is less than or equal to the lower limit value; Provided with a notification processing means for executing the notification operation based on the contact notification when the contact notification is received,
5. The notification execution unit includes the notification transmission unit and the notification processing unit, and executes the notification operation on the electronic key side. Sound alarm management device for security alarm system.

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