JP5154135B2 - Battery level check system - Google Patents

Description

  The present invention uses a battery as a power source for driving each part, and reads the locking / unlocking information necessary for locking / unlocking from the locking / unlocking card by non-contact communication to control locking / unlocking of the lock. In particular, the present invention relates to a battery remaining amount confirmation system that can extend the replacement time of a battery when the remaining amount of the battery is little.

  Conventionally, for example, a door of a commercial building, a public facility, or a general house has been provided with an electric lock system having a high crime prevention property in order to avoid intrusion of a suspicious person. This type of electric lock system performs locking / unlocking before locking by driving a driving means such as a motor or a solenoid according to specific locking / unlocking information to electrically advance and retract the dead bolt. However, when installing an electric lock, wiring work is required between a commercial power supply for supplying driving power to the electric lock and a power supply unit such as an electric lock control panel and the electric lock, so the installation work is complicated. there were.

  Therefore, in order to eliminate the wiring work at the time of installation, an electric lock device using a battery as a power source necessary for driving each part of the electric lock has been proposed. As an electric lock device using this type of battery as a power source, for example, one disclosed in Patent Document 1 below is known.

As shown in FIG. 5, a remote locking / unlocking device 100 disclosed in Patent Document 1 includes a transmitter 101 that transmits a signal necessary for locking and unlocking an electric lock, a control circuit 103 that is powered by a battery 102, and It has. The control circuit 103 includes a receiving circuit 103 a that receives a signal transmitted from the transmitter 101, and performs an electric lock and unlock operation based on the signal received from the transmitter 101. In the control circuit 103, after the voltage of the battery 102 becomes equal to or lower than a predetermined voltage and the electric lock is locked and unlocked a predetermined number of times, the electric lock is inactivated. In this inoperative state, power is supplied from the battery 102 to the control circuit 103. After that, when a signal necessary for unlocking is transmitted from the transmitter 101 and received by the receiving circuit 103a, the unlocking operation is performed only once. Yes.
JP 2005-76198 A

  However, the conventional electric lock device including the above-mentioned Patent Document 1 has a battery connected to the user by an alarm output such as LED display (lighting / flashing) or buzzer sound immediately before the remaining battery level is exhausted. Notifying that the remaining capacity is low. For this reason, the user can know the battery replacement time only by an alarm output immediately before the device becomes unusable, and there is no way to confirm the battery replacement time in advance, which is inconvenient.

  Also, in recent years, a non-contact type IC chip built-in card capable of non-contact communication is used, and this lock / unlock card stores information on locking / unlocking necessary for locking / unlocking in advance and information provided near the door. 2. Description of the Related Art An electric lock device that reads and locks information on a locking / unlocking card with a reader in a non-contact manner and performs locking / unlocking before locking has become widespread. And in this kind of electric lock device, in order to read locking / unlocking information from the locking / unlocking card in a non-contact manner, a call is made to the communicable range at a predetermined activation cycle.

  In this type of electric lock device, a call is made to the communicable range at a predetermined activation cycle even in a situation where the actual locking / unlocking operation is not performed so that the locking / unlocking operation is always possible. ing. For this reason, there is a problem that the remaining battery level is wasted due to the above-described call for the activation cycle, particularly when the remaining battery level is low (near end).

  Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a battery remaining amount confirmation system capable of extending the battery replacement time when the remaining amount of the battery is low. Is.

In order to achieve the above-described object, the battery remaining amount confirmation system according to claim 1 uses a battery as a power source for driving each part, and uses a locking / unlocking card storing locking / unlocking information necessary for locking / unlocking the lock. A card information reading unit that calls a communicable range at a predetermined activation cycle to read the locking / unlocking information, and the card information reading unit reads the locking / unlocking information from the locking / unlocking card; A battery remaining amount confirmation system for confirming the remaining amount,
Voltage value measuring means for measuring a load voltage value of the battery in a loaded state in which the card information reading unit reads the locking / unlocking information and a no-load voltage value of the battery in an unloaded state in which locking / unlocking is not performed; ,
An average voltage difference between the load voltage value measured by the voltage value measuring means and the no-load voltage value is calculated, and the absolute value of the calculated average voltage difference exceeds a prestored battery replacement threshold value. When the average voltage difference exceeds the battery replacement threshold, a notification command signal for notifying that the remaining amount of the battery is near-end is output, and the replacement of the battery is performed. Battery remaining amount measuring means for outputting a start cycle change signal for changing the start cycle so as to extend the time;
And a notification unit for notifying that the remaining amount of the battery is near-end when the notification command signal is input.

  According to the remaining battery level confirmation system of the present invention, when the remaining battery level is near-end, control is performed so that the activation period interval of the card information reading unit becomes longer. There is an effect that it can be used effectively.

  Further, according to the battery remaining amount confirmation system according to claim 2 of the present invention, the battery replacement time can be easily grasped by checking the remaining amount of the battery at the time of locking / unlocking operation as well as extending the life of the battery replacement described above. can do.

  Furthermore, according to the remaining battery level confirmation system of the third aspect of the present invention, the remaining battery level can be measured not only with the type of battery used, but also with the extension of the battery replacement time.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram showing a first embodiment of a battery remaining amount confirmation system according to the present invention, FIG. 2 is a flowchart for explaining the processing operation of the battery remaining amount confirmation system of FIG. 1, and FIG. The schematic block diagram which shows the 2nd form of the battery remaining charge confirmation system which concerns, FIG. 4 is a flowchart figure for demonstrating the processing operation of the battery remaining charge confirmation system of FIG.

  The battery remaining amount confirmation system of this example uses a non-contact communication locking / unlocking card in which locking / unlocking information necessary for locking / unlocking is stored in advance, and a dry battery or a button battery as a power source required to drive each unit. Such a battery is used in a card lock system using a card-type electric lock that performs locking / unlocking before locking by determining validity of locking / unlocking information read from a locking / unlocking card in a non-contact manner.

  In the battery remaining amount confirmation system of this example, the remaining amount of battery is checked at the time of locking / unlocking operation or periodically, and when the remaining amount is a little (hereinafter referred to as near end), an alarm notification is given. In order to extend the battery replacement time, the optimal starting environment is controlled.

  First, the structure of the 1st form in the battery residual amount confirmation system of this example is demonstrated, referring FIG. The battery remaining amount confirmation system 1 according to the first embodiment is schematically configured by using a card-type electric lock 20 for electrically locking / unlocking a lock using a locking / unlocking card 10 at the time of locking / unlocking operation.

  The locking / unlocking card 10 includes, for example, an IC card that can read and write various data in a memory of a processor chip, and an IC chip that includes a CPU, ROM, RAM, flash RAM, and the like, and can be read / written by non-contact communication It is composed of a card-shaped storage medium such as a non-contact IC chip built-in card, and stores locking / unlocking information necessary for locking / unlocking in advance. The locking / unlocking card 10 can be in close contact with a predetermined location (communication range) of the card-type electric lock 20 disposed on the door so that information can be transmitted and received with the card-type electric lock 20 by non-contact communication. ing.

  The card-type electric lock 20 reads the lock / unlock information necessary for locking / unlocking the lock from the lock / unlock card 10 owned by the user in a non-contact manner, and determines the legitimacy of the read lock / unlock information. Based on the results, lock / unlock control of the lock is performed. As shown in FIG. 1, the card-type electric lock 20 includes a card information reading unit 21, an electric lock control unit 22, a storage unit 23, a notification unit 24, a drive mechanism 25, and a power supply unit 26.

  The card information reading unit 21 is configured by a non-contact type card reader for reading the locking / unlocking information stored in the locking / unlocking card 10 by non-contact communication. The card information reading unit 21 makes a call to the communicable range at a predetermined activation cycle interval so as to read the locking / unlocking card 10 from the locking / unlocking card 10 in a non-contact manner, and the locking / unlocking card owned by the user When 10 reaches the communicable range, the locking / unlocking information is read from the locking / unlocking card 10 in a non-contact manner at the timing of the call, and the read locking / unlocking information is output to the electric lock control unit 22.

  Further, the card information reading unit 21 extends the replacement time of the battery 26a when the battery remaining amount is near-end, and therefore, when the activation cycle change signal is input from the electric lock control unit 22, the card information reading unit 21 calls the activation cycle to be called to the locking / unlocking card 10. Start-up control is performed to make the interval longer than normal.

  The electric lock control unit 22 is composed of, for example, a microcomputer including a CPU, a ROM, a RAM, and the like, and performs various controls related to the electric lock. As shown in FIG. 1, the electric lock control unit 22 includes a locking / unlocking control unit 22a, a battery remaining amount confirmation unit 22b, a battery replacement time calculation unit 22c, and a battery replacement notification control unit 22d.

  The locking / unlocking control means 22a compares the locking / unlocking information from the card information reading unit 21 with the authentication locking / unlocking information stored in advance in the storage unit 23 to determine its validity, and only when the authentication is successful. The lock is unlocked / unlocked according to the unlocked / unlocked state of the lock and the open / closed state of the door. In addition, the locking / unlocking control unit 22a outputs a locking / unlocking operation signal indicating that the locking / unlocking information has been input to the battery remaining amount checking unit 22b and the battery replacement notification control unit 22d, and log information when the locking / unlocking operation is performed. It is stored in the storage unit 23. Furthermore, the lock / unlock control means 22a outputs a drive control signal for driving the drive mechanism 25 when locking / unlocking the lock, controls the power supply from the power supply unit 26 to the drive mechanism 25, and is input as monitor information from the lock. A status signal (for example, door opening / closing status signal, lock / unlock status signal before lock) is determined.

  The battery remaining amount confirmation means 22b detects (checks) the voltage of the battery 26a in order to confirm the remaining amount of the battery 26a accommodated in the power supply unit 26 when a locking / unlocking operation signal is input from the locking / unlocking control means 22a. )doing. The battery remaining amount confirmation unit 22b acquires a battery remaining amount value corresponding to the remaining amount of the battery 26a by voltage detection (voltage check), and uses the acquired battery remaining amount value as a battery replacement timing calculation unit 22c and a battery replacement notification control. To the means 22d.

  The battery replacement time calculation unit 22c is configured to replace the battery 26a based on the remaining battery level value from the remaining battery level confirmation unit 22b and the log information at the time of the locking / unlocking operation stored in the storage unit 23 (for example, the remaining number of uses). Information, date information to be exchanged, etc.). The battery replacement time calculation means 22c outputs replacement time information based on the calculated replacement time to the battery replacement notification control means 22d.

  The battery replacement notification control unit 22d compares the battery remaining amount value from the battery remaining amount confirming unit 22b with the battery replacement threshold value stored in the storage unit 23, and when the battery remaining value falls below the battery replacement threshold value. A notification command signal is sent to the notification unit 24 in order to notify the user that the remaining battery level is near-end (that is, when the current locking / unlocking operation coincides with the replacement time of the battery 26a). Is output. In addition, the battery replacement notification control means 22d extends the replacement time of the battery 26a in parallel with the output of the notification command signal, so that the activation period when calling the locking / unlocking card 10 to the card information reading unit 21 is optimized. The start cycle change signal to change to the state is output.

  The storage unit 23 is composed of, for example, a magnetic or optical storage medium or a semiconductor memory such as a ROM or a RAM. This storage unit 23 includes authentication locking / unlocking information for determining whether the locking / unlocking information from the card information reading unit 21 is legitimate information for locking / unlocking, the number of locking / unlocking operations, the locking / unlocking time, etc. Log information, control information of each part constituting the card-type electric lock 20, and various data relating to lock / unlock control such as a status signal (door open / close state signal and lock / unlock state signal) ing. The storage unit 23 also stores a battery replacement threshold value used for determining whether or not to perform a battery replacement notification in the battery replacement notification control unit 22d, and replacement time information calculated by the battery replacement time calculation unit 22c. ing.

  The above-mentioned battery replacement threshold value includes the type and standard of the battery 26a to be used (for example, a dry battery, a button battery, an alkaline battery, a manganese battery, an AA type, an AA type, etc.) Since the value varies depending on the combination, the optimal value obtained in advance through experiments or the like is stored in the storage unit 23.

  The notification unit 24 includes, for example, display means such as an LED and a liquid crystal display, and sounding means such as a buzzer. When the notification command signal is input from the battery replacement notification control unit 22d, the notification unit 24 gives an alarm notification (ringing by a buzzer, display by a display unit, etc.), and the remaining amount of the battery 26a attached to the power supply unit 26 is low. The user is informed that it is near-end (battery replacement notification). In addition, when the replacement time information is input from the battery replacement time calculation unit 22c, the notification unit 24 displays the replacement time of the battery 26a based on the replacement time information (for example, the remaining usage count information and replacement date information). Yes.

  The drive mechanism 25 is composed of a drive device such as a motor or a solenoid and a lock, for example, and is driven by a drive control signal input from the electric lock control unit 22 to lock or unlock the lock, and is inserted into the lock hole of the door frame. On the other hand, the lock is unlocked by protruding the dead bolt (when locking) or pulling it (when unlocking).

  The power supply unit 26 includes a power supply unit to which a battery 26a such as a button battery or a dry battery can be attached and detached, and is provided at a predetermined position of the door or in the vicinity of the door. The power supply unit 26 supplies drive power necessary for each unit of the card type electric lock 20 from the battery 26 a under the control of the electric lock control unit 22.

  Next, the processing operation in the above-described first embodiment of the remaining battery level confirmation system 1 will be described with reference to FIG. In the processing operation described below, since the processing operation related to locking / unlocking before the lock is the same as the normal locking / unlocking processing, description thereof will be omitted, but it goes without saying that this locking / unlocking processing is also performed in parallel. Yes.

  The card information reading unit 21 of the card type electric lock 20 performs activation control for calling the communication range at a predetermined activation cycle interval. In this state, when the locking / unlocking card 10 reaches the communicable range of the card-type electric lock 20, the card-type electric lock 20 contacts the locking / unlocking information from the locking / unlocking card 10 in a non-contact manner at the timing of the activation cycle interval. Read (ST1). When the card information reading unit 21 reads the locking / unlocking information, the battery remaining amount confirmation means 22b detects the voltage of the battery 26a (voltage check) in order to confirm the remaining amount of the battery 26a accommodated in the power supply unit 26, A battery remaining amount value corresponding to the remaining amount of the battery 26a based on this detection is acquired (ST2).

  When the battery remaining amount confirmation unit 22b acquires the battery remaining amount value, the battery replacement time calculating unit 22c performs the battery 26a based on the acquired battery remaining amount value and the log information at the time of the locking / unlocking operation stored in the storage unit 23. Is calculated (ST3). Note that the battery replacement notification control unit 22d outputs the replacement time of the battery 26a calculated at this time to the notification unit 24 as replacement time information, and performs display and the like from the notification unit 24. As a result, the user is notified of the replacement time.

  Then, when the replacement time is calculated in ST3, the battery replacement notification control means 22d determines whether it is the replacement time of the battery 26a, so that the battery replacement value stored in the storage unit 23 and the remaining battery value is stored. A comparison is made with the threshold value to determine whether or not the remaining battery level value is below the threshold value for battery replacement (ST4). Here, when the battery remaining amount value falls below the battery replacement threshold value (ST4-Yes), the battery replacement notification control unit 22d determines that the battery remaining amount is near-end (requires battery replacement). Then, in order to inform the user that it is time to replace the battery, the battery replacement notification control unit 22d outputs a notification command signal to the notification unit 24 and issues an alarm notification for prompting battery replacement (ST5).

  On the other hand, when the remaining battery level is not lower than the battery replacement threshold (ST4-No), the battery replacement notification control unit 22d determines that the remaining battery level is not near end. And by this discrimination | determination, it returns to ST1 again, and the card | curd information reading part 21 calls on the locking / unlocking card | curd 10 at the space | interval of the starting period set at this time.

  Then, the battery replacement notification control means 22d sets the activation cycle when calling the locking / unlocking card 10 to the card information reading unit 21 in an optimal state in order to extend the replacement time of the battery 26a in parallel with the alarm notification of ST5. The activation period change signal to be changed to is output to the card information reading unit 21. When the activation period change signal is input, the card information reading unit 21 performs activation control (activation period setting) for making the activation period longer than the previous interval (ST6), and returns to ST1 again. Then, the locking / unlocking card 10 is called at the newly set activation cycle interval.

  Next, the structure of each part in the 2nd form of the battery remaining charge confirmation system 1 of this example is demonstrated, referring FIG. Note that, in the remaining battery level confirmation system 1 of the second embodiment described below, the same constituent elements as those of the remaining battery level confirmation system 1 of the first embodiment are denoted by the same reference numerals, description thereof is omitted, and is different. Only the configuration requirements are described.

  In the battery remaining amount confirmation system 1 according to the second embodiment, the electric lock control unit 22 includes a battery 26a in a load state where the lock is unlocked and unlocked in addition to the locking / unlocking control means 22a similar to the battery remaining amount confirmation system according to the first embodiment. Voltage values (hereinafter referred to as load voltage values) and voltage values (hereinafter referred to as no load voltage values) of the battery 26a in an unloaded state (standby state) where locking and unlocking are not performed. The measuring unit 22e and the remaining battery level measuring unit 22f for measuring the remaining amount (remaining capacity) of the battery 26a based on the load voltage value and the no-load voltage value measured by the voltage value measuring unit 22e are provided. Yes.

  Further, each configuration will be described. The voltage value measuring unit 22e uses the voltage value of the loaded battery 26a in which locking / unlocking is performed as the load voltage value, and the battery 26a in the unloaded state (standby state) in which locking / unlocking is not performed. Are measured as no-load voltage values. When the locking / unlocking operation signal is input from the locking / unlocking control unit 22a, the voltage value measuring unit 22e calculates the load voltage value of the battery 26a measured at this time and the latest no-load voltage value measured immediately before the locking / unlocking operation. This is output to the battery remaining amount measuring means 22f. The voltage value measuring means 22e measures the no-load voltage value periodically (for example, the same period as the calling period for the locking / unlocking card 10) in order to accurately measure the remaining battery capacity in the remaining battery capacity measuring means 22f. When the unlocking operation is performed, the latest no-load voltage value is output.

  The battery remaining amount measuring unit 22f measures the remaining amount of the battery 26a from the load voltage value and the no-load voltage value measured by the voltage value measuring unit 22e, and performs various controls based on the measured battery remaining amount. . Specifically, the average voltage is obtained by taking a moving average of the voltage difference between the load voltage value and the no-load voltage value of the past plural times (for example, 10 times) measured by the voltage value measuring means 22e when the unlocking operation is performed. Calculate the difference. Then, it is determined whether or not the calculated absolute value of the average voltage difference exceeds a battery replacement threshold stored in the storage unit 23. If the average voltage difference exceeds the battery replacement threshold, the remaining battery level is near-end. In order to notify the user that the battery has been replaced, a notification command signal is output to the notification unit 24.

  In addition, the battery remaining amount measuring means 22f extends the replacement time of the battery 26a in parallel with the output of the notification command signal, so that the activation cycle when calling the locking / unlocking card 10 to the card information reading unit 21 is optimized. The start cycle change signal to change to the state is output.

  In addition to the various information described in the first embodiment, the storage unit 23 stores a battery replacement threshold used to determine whether or not to perform battery replacement notification in the battery remaining amount measuring unit 22f. The average voltage value calculated by the battery remaining amount measuring means 22f is stored.

  Next, the processing operation of the second embodiment of the remaining battery level confirmation system 1 will be described with reference to FIG. In the processing operation described below, the processing operation related to locking / unlocking before locking is the same as the normal locking / unlocking processing, as in the first embodiment, and the description thereof will be omitted. However, this locking / unlocking processing is also performed in parallel. Needless to say.

  The card information reading unit 21 of the card type electric lock 20 performs activation control for calling the communication range at a predetermined activation cycle interval. In this state, when the locking / unlocking card 10 reaches the communicable range of the card-type electric lock 20, the card-type electric lock 20 contacts the locking / unlocking information from the locking / unlocking card 10 in a non-contact manner at the timing of the activation cycle interval. Read (ST11). And the voltage value measurement means 22e measures the load voltage value of the battery 26a at the time of reading locking / unlocking information (load state) (ST12).

  When measuring the load voltage value in ST12, the voltage value measuring means 22e calculates a voltage difference between this load voltage value and the latest no-load voltage value, and takes the moving average of the past voltage differences to obtain the average voltage difference. Is calculated (ST13). The battery remaining amount measuring means 22f compares the acquired absolute value of the average voltage difference with the battery replacement threshold stored in the storage unit 23 to determine whether it is time to replace the battery 26a. It is determined whether or not the average voltage difference exceeds a battery replacement threshold (ST14).

  Here, when the average voltage difference exceeds the battery replacement threshold (ST14-Yes), the battery remaining amount measuring unit 22f determines that the battery remaining amount is near-end (requires battery replacement) and uses this. In order to notify the user of the battery replacement, a notification command signal is output to the notification unit 24 to issue an alarm notification for prompting battery replacement (ST15).

  On the other hand, if the average voltage difference does not exceed the battery replacement threshold (ST14-No), the battery remaining amount measuring unit 22f determines that the battery remaining amount is not near end. And by this discrimination | determination, it returns to ST11 again, and the card | curd information reading part 21 calls on the locking / unlocking card | curd 10 at the space | interval of the starting period set at this time.

  Then, in order to extend the replacement time of the battery 26a in parallel with the alarm notification of ST15, the battery remaining amount measuring means 22f has an optimal start cycle when calling the card information reading unit 21 to the locking / unlocking card 10. The activation period change signal to be changed to is output to the card information reading unit 21. When the activation period change signal is input, the card information reading unit 21 performs activation control (activation period setting) for making the activation period longer than the previous interval (ST16), and returns to ST11 again. Then, the locking / unlocking card 10 is called at the newly set activation cycle interval.

  As described above, when the card information reading unit 21 reads the locking / unlocking information from the locking / unlocking card 10, the battery remaining amount confirmation system according to the first embodiment described above confirms the remaining amount of the battery 26 a accommodated in the power supply unit 26. Therefore, the voltage of the battery 26a is checked. Then, a battery remaining value corresponding to the remaining amount of the battery 26a is acquired by this voltage check, and the replacement time of the battery 26a is based on the remaining battery value and the log information regarding the locking / unlocking operation stored in the storage unit 23. Is calculated. Further, the battery remaining amount value from the battery remaining amount confirming unit 22b is compared with the battery replacement threshold value stored in the storage unit 23, and when the battery remaining value falls below the battery replacement threshold value, In order to notify the user that the battery is near-end and to change the call activation period of the locking / unlocking card 10 to the card information reading unit 21 in order to extend the replacement time of the battery 26a. Start-up control is performed.

  Thereby, the user can grasp | ascertain easily the replacement time of the battery 26a at the time of locking / unlocking operation. In addition, when the remaining battery level is near-end, control is performed so that the interval of the activation period of the card information reading unit is increased. Therefore, the battery 26a can be effectively used by extending the replacement time of the battery 26a. There is an effect that the convenience can be improved.

  Moreover, the battery remaining amount confirmation system according to the second embodiment measures the voltage value of the battery 26a to which a load is applied when reading the locking / unlocking information from the locking / unlocking card 10 by the card information reading unit 21 as a load voltage value. The voltage difference between the measured value and the no-load voltage value measured periodically is checked, and the average voltage difference is obtained by taking the moving average of the voltage differences of the past multiple times. Then, in order to determine whether or not it is time to replace the battery 26a, the acquired absolute value of the average voltage difference is compared with the battery replacement threshold stored in the storage unit 23, and the average voltage difference is compared with the battery replacement threshold. In the case where the battery is exceeded, a battery replacement notification is made to inform the user that the remaining battery level is near-end, and the card information reading unit 21 is called for the unlocking card 10 to extend the replacement time of the battery 26a. Start-up control is performed to change the start-up cycle to an optimal state.

  Thereby, not only the kind of battery 26a to be used but a battery remaining charge can be measured. In addition, when the remaining battery level is near-end, control is performed so that the interval of the activation period of the card information reading unit is increased. Therefore, the battery 26a can be effectively used by extending the replacement time of the battery 26a. There is an effect that the convenience can be improved.

  By the way, in the battery remaining amount confirmation system of the second embodiment described above, the load voltage value in the load state where the card information reading unit 21 reads the lock / unlock information from the lock / unlock card 10 and the no-load state in which the lock / unlock is not performed. It is determined whether or not the average voltage difference of the voltage difference from the no-load voltage value exceeds the battery replacement threshold, and when the average voltage difference exceeds the battery replacement threshold, the start cycle interval is set together with the battery replacement notification. Although the start-up control is performed so as to be long, a start-up start-up control may be performed by the internal resistance of the battery 26a. Specifically, in FIG. 3, when the voltage value measuring unit 22e is omitted and the lock / unlock operation signal is input from the lock / unlock control unit 22a, the battery remaining amount measuring unit 22f performs back calculation from the current consumption. It is determined whether or not the calculated internal resistance of the battery 26a exceeds a set value. When the internal resistance exceeds the set value, the battery remaining amount measuring unit 22f performs start-up control so that the start-up cycle interval becomes longer together with the battery replacement notification.

  As mentioned above, although the best form in this invention was demonstrated, this invention is not limited with the description and drawing by this form. That is, it is a matter of course that all other forms, examples, operation techniques, and the like made by those skilled in the art based on this form are included in the scope of the present invention.

FIG. 1 is a schematic configuration diagram showing a first embodiment of a battery remaining capacity confirmation system according to the present invention. It is a flowchart figure for demonstrating the processing operation of the battery remaining charge confirmation system of FIG. It is a schematic block diagram which shows the 2nd form of the battery remaining charge confirmation system which concerns on this invention. It is a flowchart figure for demonstrating the processing operation of the battery remaining charge confirmation system of FIG. It is a schematic block diagram for demonstrating the conventional remote locking / unlocking apparatus disclosed by patent document 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Battery remaining charge confirmation system 10 Locking / unlocking card 20 Card-type electric lock 21 Card information reading part 22 Electric lock control part 22a Locking / unlocking control means 22b Battery remaining charge confirmation means 22c Battery replacement time calculation means 22d Battery replacement notification control means 22e Voltage Value measuring means 22f Battery remaining capacity measuring means 23 Storage section 24 Notification section 25 Drive mechanism 26 Power supply section 26a Battery

Claims (1)

A battery is used as a power source for driving each unit, and a call is made to the communicable range at a predetermined activation cycle in order to read the locking / unlocking information from the locking / unlocking card storing the locking / unlocking information necessary for locking / unlocking. A battery information reading unit comprising a card information reading unit, wherein the card information reading unit checks the remaining amount of the battery when the locking / unlocking information is read from the locking / unlocking card,
Voltage value measuring means for measuring a load voltage value of the battery in a loaded state in which the card information reading unit reads the locking / unlocking information and a no-load voltage value of the battery in an unloaded state in which locking / unlocking is not performed; ,
An average voltage difference between the load voltage value measured by the voltage value measuring means and the no-load voltage value is calculated, and the absolute value of the calculated average voltage difference exceeds a prestored battery replacement threshold value. When the average voltage difference exceeds the battery replacement threshold, a notification command signal for notifying that the remaining amount of the battery is near-end is output, and the replacement of the battery is performed. Battery remaining amount measuring means for outputting a start cycle change signal for changing the start cycle so as to extend the time;
A remaining battery level confirmation system comprising: a notification unit that notifies that the remaining battery level is near-end when the notification command signal is input.

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