JP2014133995A - Electric lock lifetime prediction apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide means for predicting the lifetime of an electric lock.SOLUTION: An entering/leaving management server 1 acquires from control devices 4 controlling an electric lock 6 a locking signal of the electric lock, an opening/closing signal of a door in which the electric lock 6 is installed and a fault signal of the electric lock 6 and creates for each electric lock 6 electric lock information indicating a cumulative work time A of the electric lock 6, a number B of times of opening/closing the door in which the electric lock 6 is installed, during a predetermined time, and a cumulative fault time C of the electric lock 6. While referring to the electric lock information and a durable number D of times of use, a prediction value of the lifetime of the electric lock 6 is computed by a formula (1): the durable number D of times of use/the number B of times of opening/closing the door during the predetermined time-{the cumulative work time A of the electric lock 6+(the cumulative work time A of the electric lock/the cumulative fault time C of the electric lock}.

Description

  The present invention relates to a technique for predicting the life of an electric lock.

  In an entrance / exit management system, an electric lock is often used for locking and unlocking each room. This electric lock may break down due to deterioration over time or the like, and replacing the electric lock after the failure has occurred is not preferable for crime prevention. To solve this problem, the average value of the lock time of the electric lock (the time from when the door is closed until the electric lock is locked) is calculated, and when the average value of the lock time exceeds a predetermined value, A system has been proposed in which it is determined that the lock is in a state in which a failure is likely to occur, and notification to that effect is made to the administrator (see Patent Document 1).

JP 2008-274558 A

  However, the technique described in Patent Document 1 is merely a notification that the electric lock (and the door on which the electric lock is installed) is likely to fail. That is, it is impossible to predict when the electric lock will break down or the electric lock itself needs to be replaced (the electric lock life). Such a state is not preferable from the viewpoint of maintenance management of each facility and preventive maintenance of failure in the entrance / exit management system. Then, an object of this invention is to provide the means to predict the lifetime of the electric lock in an entrance / exit management system.

In order to solve the above-described problem, the present invention provides a lock signal for the electric lock, an opening / closing signal for a door on which the electric lock is installed, and a failure signal for the electric lock from a control device that controls the electric lock. Based on the acquired signals, the accumulated operation time A of the electric lock indicated in the electric lock information of the storage unit, the number B of opening and closing of the door where the electric lock is installed in a predetermined time, and the electric lock An electric lock information recording unit for updating the accumulated failure time C, the storage unit for storing the electric lock information and the number of times D of each electric lock is used, the electric lock information and the number of times D is used for the electric lock. And an electric lock life calculation unit that calculates a predicted value of the life of the electric lock according to the following formula (1), and an output unit that outputs a predicted value of the life of the electric lock. A prediction device was used. Other configurations will be described in the embodiments.
Predicted value of the life of the electric lock = the number of times that the electric lock is used D / the number of times the door is opened and closed for the predetermined time B− {the cumulative operation time A + of the electric lock (the cumulative operation of the electric lock) Time A / Cumulative failure time of the electric lock C)} Equation (1)

  According to the present invention, since the life of the electric lock in the entry / exit management system can be predicted, the administrator of the entry / exit management system performs maintenance management of each facility in the entrance / exit management system and preventive maintenance of failure. It becomes easy.

It is the figure which showed the example of a structure of the system of this Embodiment. It is a figure for demonstrating in detail the entrance / exit management server and DB (database) part of FIG. It is a figure for demonstrating the structure of the control apparatus of FIG. It is a figure for demonstrating the electrical interface of the control apparatus of FIG. 1, and an electric lock. It is the figure which showed the predicted value calculation procedure of the lifetime of the electric lock by the entrance / exit management server of FIG.

  Embodiments of the present invention will be described in detail with reference to the drawings as appropriate. Here, a case where the electric lock life prediction apparatus of the present invention is realized by the entrance / exit management server 1 will be described as an example.

  First, a configuration example of a system including the entrance / exit management server 1 will be described with reference to FIG. In FIG. 1, a building A managed by the entrance / exit management server 1 includes four rooms A to D. The system includes an entrance / exit management server 1, a display device 2, a DB unit (database unit, storage device) 3, a control device 4, a CR (card reader) 5, and an electric lock 6. CR5 and electric lock 6 are installed in each room.

  The entrance / exit management server 1 is connected to each control device 4 through a communication line 7, and from the lock and unlock signals of the electric lock 6 acquired from each control device 4, The display device 2 displays the entry / exit history of each room. Further, the entrance / exit management server 1 calculates and displays a predicted value of the life of the electric lock 6 based on a signal for locking and unlocking the electric lock 6 and a signal for opening / closing the door where the electric lock 6 is installed. Output to device 2 etc. Details of the calculation process of the predicted value of the lifetime of the electric lock 6 will be described later.

  The display device 2 is a device that displays information output from the entry / exit management server 1, and is, for example, a liquid crystal monitor.

  The DB unit 3 stores personal identification information indicating information such as the card number, traffic authority, and name of each person entering the room (see FIG. 2). Further, the DB unit 3 stores electric lock information (details will be described later) and information indicating the number of times each electric lock 6 has been used (electric lock use number information). These pieces of information are referred to when the entrance / exit management server 1 calculates a predicted value of the lifetime of each electric lock 6 (remaining time until the replacement time of the electric lock 6). The DB unit 3 is realized by a hard disk device, a computer, or the like.

  The control device 4 stores the same personal identification information as the personal identification information stored in the DB unit 3. The control device 4 is connected to the CR 5 and the electric lock 6 and collates the card number read by the CR 5 with the card number of the personal identification information stored in the control device 4 to open the electric lock 6. Do the lock. The control device 4 records each person's entry / exit history from the card number read by the CR 5 and the unlocking information of the electric lock 6. Further, the control device 4 acquires a signal for locking / unlocking the electric lock 6 and an opening / closing signal for the door on which the electric lock 6 is installed, and transmits it to the entrance / exit management server 1. Further, when detecting a failure (and recovery of failure) of the electric lock 6 connected to its own control device 4, the control device 4 transmits a signal to that effect to the entrance / exit management server 1.

  The CR 5 is a device that identifies an individual who enters each room, and is, for example, a card reader that reads information on an IC card or a magnetic card. The CR 5 may be a device that identifies an individual who enters each room, and a numeric keypad, a biometric authentication device, or the like may be used.

  Next, the DB unit 3 and the entrance / exit management server 1 will be described in detail with reference to FIG. In FIG. 2, the display device 2 and the rooms C and D are not shown.

  The DB unit 3 stores personal identification information, electric lock information, and electric lock durability count information. Since the personal identification information is as described above, the description is omitted. The electric lock information includes, for each electric lock 6, the cumulative operation time of the electric lock 6 (cumulative operation time since the electric lock 6 was installed), the number of times of opening / closing the door where the electric lock 6 is installed, This is information indicating the cumulative failure time of the lock 6 (cumulative failure time since the electric lock 6 was installed) and the like, and is updated by the entrance / exit management server 1. The electric lock service life information is information indicating the service life of the electric lock 6. The service life of the electric lock 6 is indicated by, for example, the number of times the door on which the electric lock 6 is installed is opened and closed. For example, when the electric lock 6 has a service life of 10000 times, if the number of times the door on which the electric lock 6 is installed exceeds 10,000, there is a high possibility that the electric lock 6 will fail. Indicates. If there are a plurality of types of electric locks 6 used in the system, the information on the number of times that the electric lock can be used is prepared for each type.

  The entrance / exit management server 1 displays on the display device 2 the locked / unlocked state of the electric lock 6 and the entry / exit history of each room. Further, the entrance / exit management server 1 uses the lock / unlock signal of the electric lock 6 acquired from each control device 4, the door open / close signal of the electric lock 6 and the failure / recovery signal of the electric lock 6. The predicted value of the life of each electric lock 6 is calculated, and the calculation result is displayed on the display device 2.

  The entrance / exit management server 1 includes an input / output unit 11, a control unit 12, and a storage unit 13, as shown in FIG.

  The input / output unit 11 inputs and outputs signals and information with other devices. For example, the input / output unit 11 receives a lock / unlock signal of each electric lock 6 and a door open / close signal from the control device 4, reads and updates the electric lock information of the DB unit 3, and displays The predicted value of the life of the electric lock 6 is output to the device 2. The input / output unit 11 is a communication interface that transmits and receives information via the communication line 7 and an input / output interface that performs input / output between the input device (keyboard and the like, not shown), the display device 2, the DB unit 3, and the like. It consists of.

  The control unit 12 controls the entire entrance / exit management server 1 and includes an electric lock information recording unit 122, an electric lock life estimation unit 121, and a display processing unit 123. The control unit 12 is realized by a program execution process by a CPU (Central Processing Unit, not shown) included in the entrance / exit management server 1 or by dedicated hardware.

  The electric lock information recording unit 122 sends a lock / unlock signal for each electric lock 6 connected to the control device 4, a door open / close signal for the electric lock 6, and an electric lock 6 Get failure / recovery signal. And the electric lock information recording part 122 is based on each acquired signal, the cumulative operation time A of each electric lock 6, the opening / closing frequency | count B of the door in which the electric lock 6 is installed, and the cumulative failure time of each electric lock 6. C is calculated, and the cumulative operation time A of each electric lock 6, the number of times of opening / closing the door on which the electric lock 6 is installed, and the cumulative failure time C of each electric lock 6 are updated. .

The electric lock life estimation unit 121 indicates the accumulated operation time A of the door electric lock 6, the number of times of opening and closing the door at a predetermined time, and the cumulative failure time of the electric lock 6, which are indicated as electric lock information in the DB unit 3. C is read out, and the predicted value of the life of the electric lock 6 is calculated by the following equation (1) using the service life D of the electric lock 6 indicated in the electric lock service life information.
Predicted value of the life of the electric lock = number of times that the electric lock is used D / the number of times the door is opened and closed B in a predetermined time B− {accumulated operating time A + (accumulated operating time A / electric lock of the electric lock) Cumulative failure time C)} of formula (1)
According to such a calculation formula, the accumulated operating time A and accumulated failure time C of the electric lock 6 can be reflected in the predicted value of the life of the electric lock 6. In other words, the longer the cumulative operation time of the electric lock 6 is, and the shorter the cumulative failure time C is, the shorter the predicted life of the electric lock 6 can be made.

  The display processing unit 123 causes the display device 2 to display various types of information stored in the DB unit 3 and abnormality notifications (reports) notified from the control device 4.

  The storage unit 13 includes a storage device such as a RAM (Random Access Memory), a HDD (Hard Disk Drive), and a flash memory, and stores information necessary for data processing in the control unit 42.

  Next, the control device 4 will be described in detail with reference to FIG. As shown in FIG. 3, the control device 4 includes an input / output unit 41, a control unit 42, and a storage unit 43.

  The input / output unit 41 transmits the personal identification information read by the CR 5, the input lock / unlock signal of the electric lock 6, and the door open / close signal to the entrance / exit management server 1 (see FIG. 2). The input / output unit 41 is realized by a communication interface that transmits / receives information via the communication line 7 and an interface that inputs / outputs signals between the CR 5 and the like.

  The control unit 42 controls the entire control device 4 and includes an opening / closing control unit 421 and an electric lock monitoring unit 422. The opening / closing control unit 421 acquires the card number read by the CR 5 via the input / output unit 41, collates the acquired card number with the personal identification information stored in the storage unit 43, and sets the electric lock 6. Unlock and lock. The electric lock monitoring unit 422 determines whether or not the electric lock 6 connected to the control device 4 is operating normally, whether the electric lock 6 is locked and unlocked, and the door where the electric lock 6 is installed. Monitor the open / close state of the. The electric lock monitoring unit 422 transmits a signal indicating the monitoring result to the entrance / exit management server 1 via the input / output unit 41.

  The storage unit 43 stores the personal identification information described above. This personal identification information is the same information as the personal identification information stored in the DB unit 3.

Next, the electrical interface between the control device 4 and the electric lock 6 shown in FIG. 3 will be described with reference to FIG. The control device 4 and the electric lock 6 are connected by a connector as shown in FIG.
The control device 4 (opening / closing control unit 421 (see FIG. 3)) controls the solenoid of the electric lock 6 by the drive signals of the terminals 601 and 602, and causes the electric lock 6 to be unlocked. Further, the control device 4 (electric lock monitoring unit 422 (see FIG. 3)) receives an input of a door closing signal of a door (door) where the electric lock 6 is installed by a terminal 603 for door closing input. Further, the control device 4 (electric lock monitoring unit 422 (see FIG. 3)) receives an input of the unlock signal of the electric lock 6 from the unlock input terminal 604 of the electric lock 6, and receives a lock input terminal of the electric lock 6. In step 605, an input of a lock signal of the electric lock 6 is accepted.

  When receiving the lock signal, the unlock signal, the door open signal, and the door close signal from the electric lock 6, the electric lock monitoring unit 422 of the control device 4 receives the information via the communication line 7 (see FIG. 2). It transmits to the entrance / exit management server 1. The electric lock monitoring unit 422 outputs a locking signal or an unlocking signal to the electric lock 6, but determines that a failure has occurred in the electric lock 6 when a response to the electric lock monitoring unit 422 cannot be received from the electric lock 6. A signal to that effect is transmitted to the entrance / exit management server 1 via the communication line 7. After that, when the electric lock monitoring unit 422 outputs a locking signal or an unlocking signal to the electric lock 6 and a response to this can be received from the electric lock 6, it is determined that the failure has been recovered, and a signal to that effect is sent. It transmits to the entrance / exit management server 1.

  When the entrance / exit management server 1 receives from the control device 4 the input of the lock signal and unlock signal of the electric lock 6, the open signal of the door where the electric lock 6 is installed, and the door close signal, Based on this, the accumulated operating time of each electric lock 6 and the number of times of opening and closing the door are calculated, and the electric lock information is updated using the results. Further, when the entrance / exit management server 1 receives a failure signal (failure notification) of the electric lock 6 from the control device 4, it measures the time until the restoration signal is received, and the failure time of the electric lock information. Update the information.

  Here, with reference to FIG. 5, an example of a calculation process of the predicted value of the life of the electric lock 6 by the electric lock life estimation unit 121 of the entry / exit management server 1 of FIG. 3 will be described.

  First, the electric lock life estimation unit 121 reads the accumulated operation time of the electric lock 6 from the electric lock information, and converts this time into an operation year (S1: operation year calculation). Further, from the electric lock information, the number of times of opening and closing the electric lock 6 is divided by the number of years elapsed since the electric lock 6 was installed, and a predicted value of the number of times of opening and closing the door in one year is calculated (S2). Then, the electric lock life estimation unit 121 divides the service life D of the electric lock (the service life of opening and closing the door on which the electric lock 6 is installed) by the predicted value of the door opening / closing frequency in one year calculated in S2. The expected service life of the electric lock 6 is calculated (S3). And the estimated value of the lifetime of the electric lock 6 is calculated by the following formula | equation (2) (S4).

  Expected value of life of electric lock = number of service life of electric lock D / number of times door is opened / closed at predetermined time (1 year) − {operation year A of electric lock of door concerned + (operation year A of electric lock of door concerned / Accumulated failure time of electric lock C)} ... Formula (2)

  The display processing unit 123 (see FIG. 2) displays the calculation result of S4 on the display device 2 (S5).

  The entrance / exit management server 1 performs the above process for each electric lock 6. The electric lock life estimation unit 121 determines that when the predicted value of the life of the electric lock 6 calculated in S4 is smaller than a predetermined value (that is, when the electric lock 6 is highly likely to fail). That time may be displayed on the display device 2. By doing in this way, since the lifetime of the electric lock 6 can be predicted, it becomes easy for a system administrator or the like to perform preventive maintenance / maintenance management of the electric lock 6.

  In the above-described embodiment, instead of (the number of years of operation of the electric lock of the door A / the cumulative failure time C of the electric lock) in the equation (2), the number of failures of the electric lock 6 × a predetermined coefficient (for example, , 0.1) may be used. That is, the electric lock information recording unit 122 of the entrance / exit management server 1 (see FIG. 2) counts the number of failures (cumulative failure number) of each electric lock 6 and records it in the electric lock information. And the electric lock lifetime estimation part 121 calculates with the following formula | equation (3), when calculating the estimated value of the lifetime of the said electric lock 6. FIG.

  Predicted value of the life of the electric lock = number of times of service of the electric lock D / number of times of opening / closing of the door where the electric lock is installed in a predetermined time (one year) B− {the operation time A + of the electric lock of the door Number of lock failures x 0.1)} Equation (3)

  By doing in this way, when the electric lock lifetime estimation part 121 calculates the predicted value of the lifetime of the electric lock 6, the frequency | count of failure of the said electric lock 6 can be reflected. That is, the predicted value of the lifetime of the electric lock 6 in the equation (3) can be set to a shorter number of years as the electric lock 6 frequently fails.

  In the above-described embodiment, the DB unit 3 has been described as a separate device from the entrance / exit management server 1, but is not limited thereto. For example, you may make it hold | maintain each information memorize | stored in DB part 3 at the entrance / exit management server 1 side.

1 entrance / exit management server 2 display device 3 DB unit (storage unit)
4 Control device 5 CR (card reader)
6 Electrical lock 7 Communication line 11, 41 Input / output unit 12, 42 Control unit 13, 43 Storage unit 421 Open / close control unit 422 Electrical lock monitoring unit 121 Electrical lock life estimation unit 122 Electrical lock information recording unit 123 Display processing unit

Claims (2)

From the control device that controls the electric lock, the lock signal of the electric lock, the opening / closing signal of the door on which the electric lock is installed, and the failure signal of the electric lock are acquired, and stored based on the acquired signals. Electric lock information record for updating the cumulative operating time A of the electric lock shown in the electric lock information of the part, the number of times B of the door where the electric lock is installed at a predetermined time, and the cumulative failure time C of the electric lock And
The storage unit for storing the electric lock information and the number of times of service life D of the electric lock;
With reference to the electric lock information and the service life D of the electric lock, an electric lock life calculation unit that calculates a predicted value of the life of the electric lock according to the following formula (1):
Predicted value of the life of the electric lock = the number of times that the electric lock is used D / the number of times the door is opened and closed for the predetermined time B− {the cumulative operation time A + of the electric lock (the cumulative operation of the electric lock) Time A / Cumulative failure time of the electric lock C)} Equation (1)
An output unit for outputting a predicted value of the life of the electric lock;
An electric lock life prediction apparatus comprising: The electric lock information is
In place of the cumulative failure time C of the electric lock, including the cumulative failure number of the electric lock,
The electric lock information recording unit is
Based on the failure signal of the electric lock, instead of the cumulative failure time C of the electric lock, update the cumulative failure number of the electric lock indicated in the electric lock information,
The electric lock life calculation unit uses the accumulated number of failures of the electric lock × predetermined coefficient α instead of (accumulated operation time A of the electric lock / accumulated failure time C of the electric lock) in the equation (1). Then, the predicted value of the life of the electric lock is calculated. The electric lock life prediction apparatus according to claim 1.

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