JP2011179259A - Access control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an access control system which exhibits higher power saving effects even in an access control system using a generally used current-carrying time locking lock, a current-carrying time unlocking lock and a non-contact IC card. <P>SOLUTION: The access control system 1 includes an electric key 30 to be locked or unlocked when energized, a control device 10 controlling the electric key 30, and a terminal device 20 with an non-contact IC card-reader wherein the terminal device 20 receiving a signal from the non-contact IC card outputs a locking or an unlocking signal to the control device 10. The control device 10 generates at least two different voltages for controlling the electric keys 30, one voltage for locking or unlocking the electric key and the other voltage lower than the one voltage for retaining the electric key in a locked state or an unlocked state. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an entry / exit management system for managing entry / exit of a specific area such as a computer room or an office room, and more particularly to a power saving entry / exit management system using an electric lock.

  In general, the access control system is introduced for the purpose of realizing physical security of buildings and sites. The access control system is normally operated 24 hours a day, 365 days a day except for the day of inspection of the power supply facilities, etc. It is also important to reduce power consumption for operating the access control system.

As such prior art, there are Patent Document 1 and Patent Document 2.
In Patent Document 1, it was performed at the operation unit of the electric lock control device for the purpose of saving power by suppressing unnecessary power consumption in the electric lock and ensuring a normal unlocking operation. Based on the control of the control circuit that detects the unlocking operation, the power source from the energization control unit is energized to the drive circuit of the electric lock for a certain time, and whether or not the electric lock is driven by this energization. The thumb turn signal output unit generates / non-generates the thumb turn signal, and the control circuit of the electric lock control device receives or receives the thumb turn signal from the thumb turn signal output unit of the electric lock by the thumb turn signal input detection unit. A configuration is disclosed in which the type of the electric lock is automatically determined according to the case where it is not possible, and the unlocking energization time for the electric lock from the energization control unit is optimally controlled according to the determined type. Yes.
Patent Document 2 also discloses a non-contact type card lock in which a non-contact type card lock is placed in a standby state from a battery for the purpose of non-contact card identification and card information reading without any troublesome operation. When the drive power is periodically supplied only to the detection means, and the card detection means identifies the presence of the non-contact IC card by the intermittent electromagnetic wave output, the drive power supply to the card detection means is cut off, and the data communication Driving power is supplied from the battery to the RF circuit, the card lock control circuit, and the electric lock, and the data communication RF circuit performs data communication with the non-contact IC card and compares the card information with the registered information, and compares the card information with the card information. A configuration is disclosed in which when the registration information matches, the card lock control circuit controls the unlocking of the electric lock.

JP 2006-125097 A JP 2005-23734 A

However, the invention according to Patent Document 1 is basically for a system using an instantaneous energization locking / unlocking type electric lock and a motor lock energized and driven instantaneously, and these locks are locked when energized. Compared with a lock when energized and a lock when energized and unlocked when energized, power is used only during driving, thus saving power for such a lock. However, there was a problem that the effect was not great.
Moreover, although the invention which concerns on patent document 2 identifies presence of a non-contact IC card by the output of intermittent electromagnetic waves, since the non-contact IC card outputs electromagnetic waves even if it is not near, the effect of power saving is also effective. There was a problem that it was not big. In addition, since the electromagnetic wave is intermittently output, there is a problem that the response when approaching the user is delayed.
Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to use a widely used energized locking type or energized unlocked type lock and a non-contact IC card. It is also an object of the present invention to provide an entry / exit management system having a great power saving effect.

In order to solve the above problems, according to an aspect of the present invention, an electric lock that is locked or unlocked when energized, a control device that controls the electric lock, and a terminal device that includes a non-contact IC card reader are provided. The terminal device receiving a signal from the non-contact IC card is an access control system for transmitting a signal for locking or unlocking to the control device, wherein the control device is different for controlling the electric lock Generating at least two voltages, locking or unlocking the electric lock by one voltage, and holding the locked or unlocked state of the electric lock by another voltage lower than the one voltage, An access control system is provided.
According to this configuration, it is possible to provide an access control system that has a large power saving effect using a lock when energized or an unlock when energized. In addition, since the power consumption of the access control system increases in proportion to the number of gates (doors), when considering the reduction of power consumption, reducing the power consumption of a large number of terminal devices and electric locks can save power. Contributes to increased effectiveness.

Further, the control device may include one power source and a circuit that generates the at least two voltages from the one power source.
According to this configuration, an inexpensive control device can be provided.

The control device may include at least two power sources that generate the at least two voltages.
According to this configuration, it is possible to provide an entry / exit management system with a greater power saving effect.

In addition, when the control device receives a signal indicating an unlocked state from the electric lock not transmitting a signal for unlocking, the control device outputs a signal for locking the electric lock not transmitting the signal for unlocking. It may be characterized by having locking recovery means for transmitting.
According to this configuration, when the locked or unlocked state of the electric lock is held at a relatively low voltage (hereinafter, this held state is referred to as a power saving holding state), the electric lock in the power saving holding state is used. When an impact or vibration is applied due to some external factor (earthquake, human contact, etc.), the electric lock may malfunction, but when such an unintended unlocked state is entered, it can be immediately returned to the locked state. it can.

In addition, the control device includes an adjusting unit for increasing the other voltage by a predetermined voltage when transmitting a signal for locking by the locking recovery unit when transmitting a signal for locking by the locking recovery unit. It may be a feature.
According to this configuration, when the unintended unlocked state is entered in the power saving state, the output voltage can be automatically adjusted to prevent an unintended unlocked state from being next time.

In addition, in the process of increasing the other voltage from a predetermined reference voltage to a stepwise higher voltage, the control device performs adjustment to increase the other voltage by the predetermined voltage by the adjusting means at each step voltage. When the adjustment is not performed, the voltage when the adjustment is not performed may be set as the other voltage.
According to this configuration, it is possible to automatically prevent an unintended unlocked state in the power saving state.

In addition, a sensor for detecting that a person has approached the terminal device is further provided, and the non-contact IC card reader of the terminal device generates electromagnetic waves when the sensor detects that a person has approached. It may be a feature.
According to this configuration, it is possible to provide an entrance / exit management system that uses a lock when energized or unlocked when energized and has a large power saving effect. Since there is no generation of electromagnetic waves in the absence of power, it is possible to prevent power consumption due to generation of useless electromagnetic waves, and to provide an access control system with a large power saving effect using a non-contact IC card It becomes possible to do. In addition, the response when the user performs a non-contact IC card verification operation is improved.

Further, the terminal device may include the sensor.
According to this configuration, it is possible to make the sensor more compact and less expensive by incorporating the sensor into the terminal device.

Further, the terminal device may include the control device.
Normally, wiring is required between the control device and the terminal device, and between the control device and the electric lock. According to this configuration, no wiring is required between the control device and the electric lock, reducing costs and labor in construction. it can.

In order to solve the above problems, according to an aspect of the present invention, an electric lock that is locked or unlocked when energized, a control device that controls the electric lock, and a terminal device that includes a non-contact IC card reader are provided. The terminal device that has received the signal from the non-contact IC card is an entry / exit management system that sends a signal to lock or unlock the control device, and includes a sensor that senses that a person has approached the terminal device. Further, there is provided an access control system, wherein the contactless IC card reader of the terminal device generates electromagnetic waves when the sensor senses that a person approaches.
According to this configuration, the non-contact IC card reader does not generate electromagnetic waves when there is no person entering the room, so that it is possible to prevent power consumption due to generation of useless electromagnetic waves. It is possible to provide an entry / exit management system that uses an IC card and has a large power saving effect. In addition, the response when the user performs a non-contact IC card verification operation is improved.

  As described above, according to the present invention, an entry / exit management system having a large power-saving effect is provided even in an entry / exit management system using a lock when energized or unlocked when energized and a non-contact IC card. be able to.

The system block diagram which showed the 1st Embodiment of this invention. The block diagram of the terminal device in the 1st Embodiment of this invention. The block diagram of the control apparatus in the 1st Embodiment of this invention. The electric lock drive voltage switching circuit diagram in the 1st Embodiment of this invention. The internal block diagram of the electric lock in the 1st Embodiment of this invention. Explanatory drawing of the electric lock (locking type at the time of energization) control in one Embodiment of this invention. The electric lock drive voltage switching circuit diagram in the 2nd Embodiment of this invention. The block diagram of the electric current measurement circuit in the electric lock drive circuit in the 3rd Embodiment of this invention. The system block diagram (part) which showed the 4th Embodiment of this invention. The block diagram of the terminal device in the 5th Embodiment of this invention. The block diagram of the terminal device in the 6th Embodiment of this invention. The block diagram of the terminal device in the 7th Embodiment of this invention.

Below, the system etc. which concern on each embodiment of this invention are demonstrated, referring drawings.
<First Embodiment>
FIG. 1 is a system configuration diagram of an access control system showing a first embodiment of the present invention.
The entrance / exit management system 1 is mainly composed of four elements: a central processing unit 40 (for example, a computer), a control device 10, a terminal device 20, and an electric lock 30. There is one central processing unit 40 in the normal entry / exit management system 1, registration of user ID and passage permission information, display of history data such as card operations and verification results and locking / unlocking transferred from the control unit 10, Save, search, etc.

  The control device 10 is located between the central processing unit 40 and each terminal device 20 or each electric lock 30, and the number thereof depends on the scale of the access control system 1. For example, in FIG. 1, one control device 10 controls 16 gates (doors), but if there are 64 gates in total, there will be four such control devices 10 (of course, the control devices 10). The number of controllable gates is not limited to 16 gates and may be in the range of 1 to N). The control device 10 stores the user ID and passage permission information distributed from the central processing unit 40 via Ethernet, and obtains card information (ID information) read by the terminal device 20 via the dedicated LAN for verification. And returns a result of permission / denial to the terminal device 20. In addition, it has a function of transmitting history information generated by these series of operations to the central processing unit 40. Further, in conjunction with the verification result, an unlocking or locking signal is transmitted to the electric lock 30 installed at the gate via a dedicated line, or a locked or unlocked signal is received from the electric lock 30. Thus, the electric lock 30 is controlled.

  The terminal device 20 and the electric lock 30 are disposed in the vicinity of each gate. Therefore, for example, when there are 64 gates in total, there are at least 64 terminal devices 20 and electric locks 30. When the user performs a collation operation of the contactless IC card possessed by the terminal device 20 at the gate, the contactless IC card reader built in the terminal device 20 senses it. The type of the non-contact IC card is not particularly limited and may be any of Type-A, Type-B, FeliCa, etc., an active type with a built-in battery, and a passive type that operates using electromagnetic waves from a reader as an energy source. Any of the semi-active types combining both may be used.

  The electric lock 30 is an energized locking type that is locked when energized, or an energized unlocked type that is unlocked when energized. The electric lock 30 includes a solenoid and is locked or unlocked when receiving an electrical signal from the control device. Can be performed. The energized locking type electric lock is in a locked state when energized, and in an unlocked state when the energization is stopped. For example, it is unlocked when a power failure occurs. Further, an electric lock that is unlocked when energized is in an unlocked state when energized and is locked when energization is stopped, and is therefore often used for security-oriented gates. The electric lock 30 is appropriately controlled by the control device 10 and transmits information such as a locked state and an unlocked state to the control device 10.

FIG. 2 shows that the terminal device 20 includes a main control unit 21 that controls the entire terminal device and a non-contact IC card reader / writer 22 that communicates with the non-contact IC card, and further includes a touch panel. It also shows that a liquid crystal display unit 24 and a liquid crystal / touch panel control unit 23 may be provided.
The non-contact IC card reader / writer 22 has a function corresponding to the above-described non-contact IC card. As described above, when the collation operation of the non-contact IC card 25 possessed by the user is performed, the non-contact IC card reader / writer 22 and the non-contact IC card 25 mainly communicate about ID information, and the received ID The information is transmitted to the control device 10 through the dedicated LAN by the main control unit 21 for verification.

FIG. 3 shows the configuration of the control device 10. MPU (Micro Processing Unit), ROM (Read Only Memory), and RAM (Random Access Memory) are provided. The MPU reads the firmware related to the control device 10 stored in the ROM, stores the ID information in the RAM, and the like. Perform operations such as collation. Ethernet to communicate with the central processing unit 40, SIO (Serial I / O) to communicate with the terminal device 20, electric lock control unit 14 to communicate with the electric lock 30, other equipment and various sensors In order to communicate, each interface has DI / DO (Digital Input / Output).
The RAM for storing ID information and the like is backed up with a lithium battery or the like so that the information is not lost when the apparatus is turned off. In some cases, it can be replaced with a FLASH-ROM or the like.

The control apparatus 10 takes in AC100V, and supplies AC power to the starting power supply 11 and the holding power supply 12 via UPS. Further, when the building power supply itself is backed up by CVCF or the like, there is no need for UPS. The starter power supply 11 and the holding power supply 12 perform AC / DC conversion, and the DC side is connected to the switch 13. As will be described later, the switcher 13 appropriately converts the DC from the start power supply 11 and the DC from the hold power supply 12. The drive voltage of the electric lock 30 is sent to the electric lock control unit 14 by switching.
The entry / exit management system is normally equipped with a UPS so that it can perform a backup operation for a certain period of time (about 30 minutes) in case of a power failure of a commercial power source or a failure of a facility power source. If a power saving system can be realized, the capacity of the lead storage battery mounted on the UPS may be reduced. Moreover, since a lead acid battery has a lifetime, it needs to be replaced | exchanged regularly. The downsizing of lead-acid batteries not only can reduce system installation costs, but can also greatly reduce maintenance costs. Therefore, the power-saving system creates a synergistic effect of resource saving and greatly contributes to CO2 reduction.

FIG. 4 is a diagram showing a circuit for switching the driving voltage of the electric lock, and the activation power source 11, the holding power source 12, the switch 13 and the electric lock control unit 14 are described in detail. The startup power supply 11 and the holding power supply 12 receive an input of AC100V via the control unit and perform AC / DC conversion. The DC output voltage of the starting power supply 11 is 24V, for example, and the DC output voltage of the holding power supply 12 is 12V, for example. The switch 13 receives this DC output voltage as an input from both the starting power supply 11 and the holding power supply 12, and includes, for example, a relay and a diode inside. The DC output voltage of the starting power supply 11 and the DC output voltage of the holding power supply 12 are included. The drive power supply is obtained by butting the diodes. Since the DC output voltage of the starting power supply 11 is higher than the DC output voltage of the holding power supply 12, the output of the diode becomes the DC output voltage of the starting power supply 11, and no current flows from the holding power supply 12. On the other hand, if the output from the starting power supply 11 is cut by giving the starting voltage OFF signal to the relay in order to turn off the relay in this state, the drive voltage is automatically switched to the DC output voltage of the holding power supply 12. Here, the DC output voltage of the startup power supply 11 is 24 V and the DC output voltage of the holding power supply 12 is 12 V, but the present invention is not limited to these. Further, for example, as shown in the figure, the holding power supply 12 may have a function (for example, a rotary switch for changing output) that can change the output voltage. The DC output voltage of the holding power supply 12 can be changed according to the above.
Further, although the control device (FIG. 3) is for 16 gate control, the switching device may be mounted for each gate, or may be mounted as one device as a whole. It will be decided according to the cost of the product. However, the power saving effect is high when it is mounted for each gate.

The electric lock control unit 14 receives the drive voltage from the switch 13 and applies the drive voltage to the solenoid of the electric lock 30. The electric lock control unit 14 also includes a lock signal that is a signal indicating that the electric lock 30 is in a locked state, an unlock signal that is a signal indicating that the electric lock 30 is in an unlocked state, and a gate door. Can receive a door closing signal which is a signal indicating a state in which is completely closed. In the figure, COM means common, that is, ground, and indicates a reference voltage (0 V).
The electric lock control unit 14 includes a drive circuit that drives a solenoid of each electric lock and a receiving circuit (DI) that receives various status signals from the electric lock. Of course, it is not limited to this configuration.

  FIG. 5 shows the internal structure of the electric lock 30. As described above, the electric lock 30 has a solenoid, receives a drive voltage applied to both ends thereof, and outputs a lock signal when in the locked state, and vice versa. A signal is transmitted to the electric lock control unit 14 when the signal is in a state where the gate door is completely closed. That is, the electric lock 30 has a sensor that senses that it is in a locked state or an unlocked state and that the door is completely closed, and transmits a signal based on the sensor.

  FIG. 6 is a diagram illustrating the control that the control device 10 performs on the electric lock that is locked when energized. The top row indicates the presence / absence of “card operation”, the absence of “card operation” indicates a state in which the collation operation of the non-contact IC card possessed by the user is not performed, and the presence (OK) of “card operation” is Indicates the time when the verification operation was performed and the verification was received.

The second stage shows the operation of a conventional electric lock.
In this case, in order to lock the lockable electric lock when energized, it is necessary to continuously energize electricity, so a large amount of power is used in the locked state. On the other hand, power is not used in the unlocked state. Therefore, as a result of collation, when the locked state using a large amount of power is changed to the unlocked state, the power is not used, but only for a few seconds after the user passes the gate, and then the locked state is again entered. In addition, a large amount of power is used. That is, in this access control system, the locked state is overwhelmingly longer than the unlocked state, and thus a large amount of power is required.

  On the other hand, the operation of the third-stage electric lock showing one embodiment of the present invention is as follows. The fourth row shows the open / closed state of the door. When the card operation confirms the verification, the door is unlocked and the door is opened from the closed state. However, it is necessary to lock the door after the user passes the gate and opens the door to the closed state. . At this time, since the solenoid of the electric lock 30 needs to be activated, a high voltage is required. However, once the solenoid is activated and locked, it is only necessary to hold that state, and the voltage required to hold it can be much lower than the voltage normally used to activate the solenoid. Therefore, once the solenoid is activated and locked, it is necessary for the normal electric locking operation of the second stage by applying a voltage lower than the voltage for starting, which is necessary only for maintaining the state. Compared with electric power, it can be said that the electric power corresponding to the area shown by hatching in the operation of the third-stage electric lock is the electric power that can be reduced.

  In general, the important room is always locked, and the access control system for the important room needs to be operated continuously for 24 hours 365 days. The larger the number of gates, the greater the effect of reducing the power. For example, in the case of a medium-scale access control system of about 64 gates, the power consumption can be reduced by about 50% as a whole.

  Although this figure has been described based on an electric lock that is locked when energized, the same applies to an unlocked type when energized. That is, in offices and the like, it is often the case that the electric lock is kept in a continuous unlocked state for the convenience of passage during business hours, but in this case the unlocked state lasts for a long time, so the conventional electric lock Similar problems arise in control. Therefore, in such a case, if the electric lock control according to the present invention is performed, the power consumption can be greatly reduced similarly.

  In addition, when the electric lock 30 is subjected to vibration or impact due to an external cause such as an earthquake or contact with a person's door when in the power saving holding state, that is, in the locked state in this drawing, the electric lock 30 malfunctions, It may be unlocked. In such a case, the electric lock 30 has a sensor that senses that it is in the unlocked state and transmits a signal based on the sensor. However, when viewed from the control device 10, the electric lock 30 is in the locked state. However, when the control device 10 receives a signal indicating the unlocking state from the electric lock 30 even though the unlocking operation is not performed, this is due to an external factor that does not intend to unlock. The controller 10 determines that it is a malfunction, and can perform the locking operation (activation of the solenoid) on the electric lock 30 that has transmitted the signal, thereby recovering the electric lock 30 to the locked state. Such lock recovery means can ensure security of access control.

Second Embodiment
FIG. 7 is a diagram illustrating a circuit for switching the drive voltage of the electronic lock in the second embodiment. In the present embodiment, a voltage variable control unit 15A is further provided as compared with the first embodiment. The voltage variable control unit 15A receives a voltage control signal generated by the determination of the control device 10, and generates an output voltage variable signal that becomes an input of the holding power supply 12A. The voltage control signal is specifically a voltage up or down signal, and the voltage variable control unit 15A that has received the up or down signal converts the voltage to a voltage value (bit pattern) to be set from the signal. Pass to holding power supply 12A. As a result, the holding power supply 12A can change the output voltage to a predetermined voltage, and the output voltage can be controlled. Note that this method is an example, and the present invention is not limited to this as long as the method can electrically reset the output of the holding power supply. Although not shown, in consideration of the difference in the driving voltage of various electric locks, the input from the voltage variable control unit 15A may also be given to the starting power supply 11A. In addition, the drive signal in a figure is transmitted with respect to the relay in an electric lock control part from MPU in a control apparatus.

  Having this configuration in the present embodiment is that when the control device 10 transmits a locking signal to the specific electric lock 30 by the above-described locking recovery means, the output voltage of the holding power supply 12A at that time is determined in advance. Adjustment to increase the voltage can be performed. Therefore, such an adjustment means automatically adjusts the output voltage when there is a case where an unintended unlocking state occurs in the power saving state and prevents an unintentional unlocking state from occurring next time. Is possible. Here, the adjustment to increase by a predetermined voltage means, for example, to increase the output voltage of the holding power supply 12A by 0.5V. Of course, it is not limited to this.

  Furthermore, since the appropriate output voltage of the holding power supply 12A may depend on the length of the communication line from the holding power supply 12A to the electric lock 30 or the like, the control device 10 In the process of increasing the output voltage of the holding power supply 12A from a predetermined reference voltage (for example, 12V) to a stepwise high voltage, the output voltage of the holding power supply 12A is set to a predetermined voltage by the adjusting means at each stage voltage. Adjustment is made to increase by a minute (for example, by 0.5 V), and a voltage at a stage where such adjustment is no longer performed can be set to an appropriate output voltage. Therefore, according to this configuration, it is possible to automatically prevent an unintended unlocked state in the power saving state.

<Third Embodiment>
FIG. 8 is a diagram showing a configuration of a current measuring circuit in the electric lock driving circuit. In the above-described embodiment, the output voltage of the holding voltage is set by the lock recovery means. However, in this embodiment, the driving current in the power saving holding state is measured for each electric lock, and if it is insufficient, the predetermined current is set. Change the voltage to (I = starting voltage x 0.5 ÷ solenoid internal resistance). FIG. 8 shows a current measurement circuit 16B necessary for that purpose. When the measured current is insufficient, the current measurement circuit 16B transmits a current shortage signal to the voltage variable control unit 15B so that the drive current (Ir) is always larger than the predetermined current (I). The output voltage of the holding power supply 12B is controlled. This can be optimized including the wiring length and the individual difference of the electric lock, so the most power saving effect can be expected.

<Fourth embodiment>
FIG. 9 shows a system configuration diagram (part) in the present embodiment. For example, in Embodiment 1 described above, wiring is required between the control device 10 and the terminal device 20 and between the control device 10 and the electric lock 30. However, in the present embodiment, since the terminal device 20A includes a part of the functions of the control device (such as an electric lock control unit) (details will be described later), wiring between the control device and the electric lock 30A becomes unnecessary. , Cost and construction effort can be reduced.

<Fifth Embodiment>
FIG. 10 shows a terminal device in the present embodiment. This terminal device 20B is different from the terminal device in the above embodiment in that it has a connection with a human sensor. The human sensors 26 and 27 are sensors for detecting the location of a person by infrared rays, visible light, contact, or the like. Therefore, a sensor for detecting that a person has approached the terminal device 20B, that is, a human sensor 26 or 27 is provided, and this sensor is always supplied with power, continuously monitoring the approach of the person, and detecting the approach of the person. Sometimes, electromagnetic waves are generated from the non-contact IC card reader / writer 22. Since the power consumption is considerably smaller than that of the non-contact IC card reader / writer 22 and is usually several tens of milliwatts or less, even if power is always supplied instead of the non-contact IC card reader / writer 22, the amount of power used does not increase. Therefore, according to this configuration, the non-contact IC card reader / writer 22 does not generate an electromagnetic wave when there is no person entering the room, so that it is possible to prevent power consumption due to the generation of a useless electromagnetic wave. Therefore, it is possible to provide an entry / exit management system that uses the non-contact IC card 25 and has a large power saving effect. In addition, the response when the user performs the collation operation of the non-contact IC card 25 is improved.

In the present embodiment, the main control unit 21B that monitors the human sensors 26 and 27 is always energized and consumes about 1 watt of power. On the other hand, the built-in non-contact IC card reader / writer 22 has different power consumption depending on the type of non-contact IC card 25 used, and is considered to be in the range of about 1 watt to 5 watts. Therefore, the power saving effect by sensor monitoring can be reduced from 50% to 80% or more.
Furthermore, it is possible to increase the power saving effect by using the sleep function of the MPU itself of the main control unit 21B.

The human sensor 26 is a sensor provided to detect whether or not a person is present in front of the door. For example, the human sensor 26 is a sensor that monitors a lower part in front of the door from the ceiling position or is placed in front of the door. A floor mat type sensor that detects when a person steps on the floor mat may be used. The human sensor 27 is included in the terminal device 20B and senses when approaching to perform a collation operation of a non-contact IC card possessed by the terminal device 20B. Typically, it is an infrared sensor, but is not limited to this. In this manner, by incorporating the human sensor 27 into the terminal device 20B, it can be made more compact and less expensive.
In addition, the central processing unit 40 can stop the sensor function by forcibly using the terminal device at night, holidays, and specific days, etc. by remote control and schedule function, thereby reducing more wasted power Can be achieved.

<Sixth Embodiment>
Note that the fifth embodiment in which the terminal device has a connection with the human sensor and the other embodiments can be performed simultaneously or separately.
FIG. 11 shows a configuration when the fifth embodiment and the fourth embodiment are performed simultaneously. In addition to the human sensor 27 in the fifth embodiment, the terminal device 20C in the present embodiment further includes an electric lock control unit 14A that is a part of the function of the control device. Therefore, since the electric lock 30A can be directly connected to the terminal device 20C, wiring with the control device is not necessary. The terminal device 20C further includes a DC-DC power supply circuit 17 and supplies a voltage to the electric lock 30A through the electric lock control unit 14A. The DC supply to the power supply circuit 17 is supplied by the control device 10 (not shown).

<Seventh embodiment>
FIG. 12 is a configuration diagram of a terminal device in the present embodiment. In the above-described embodiment, the access management system includes two power sources, that is, a startup power source and a holding power source. However, in the present embodiment, only one startup power source 11C is provided as the power source. In addition, it has been described that the switch 13 in the first embodiment shown in FIG. 4 includes, for example, a relay and a diode. However, in the switch 13C in the present embodiment, a resistor 18C is provided inside instead of the diode. Is provided. At least two different voltages can be generated by connecting the resistor 18C and a relay that receives an input of the starting voltage OFF signal in parallel. Further, by making the resistor 18C variable, the output drive voltage can be flexibly controlled. Needless to say, a circuit including a resistor and a relay that generate at least two different voltages is not limited to the circuit shown in FIG.

  The present invention is not limited to the above-described embodiments, and the technical scope thereof includes various embodiments without departing from the scope described in the claims.

DESCRIPTION OF SYMBOLS 1 Entrance / exit management system 10 Control apparatus 11 Startup power supply 11A Startup power supply 11B Startup power supply 11C Startup power supply 12 Holding power supply 12A Holding power supply 12B Holding power supply 13 Switcher 13A Switcher 13B Switcher 13C Switcher 14 Electric lock control part 14A Electric lock control part 15A Variable voltage control unit 15B Variable voltage control unit 16B Current measurement circuit 17 Power supply circuit (DC-DC)
18C Resistor 20 Terminal Device 20A Terminal Device 20B Terminal Device 20C Terminal Device 21 Main Control Unit 21B Main Control Unit 21C Main Control Unit 22 Non-contact IC Card Reader / Writer (R / W)
23 Liquid Crystal / Touch Panel Control Unit 24 Liquid Crystal Display Unit with Touch Panel 25 Non-contact IC Card 26 Human Sensor (Inside Terminal Device)
27 Human sensor 30 Electric lock 30A Electric lock

Claims (10)

The terminal device that includes an electric lock that is locked or unlocked when energized, a control device that controls the electric lock, and a terminal device that includes a non-contact IC card reader, the terminal device that has received a signal from a non-contact IC card, An entry / exit management system that sends a signal to lock or unlock the control device,
The control device generates at least two different voltages for controlling the electric lock;
An access control system, wherein the electric lock is locked or unlocked by one voltage, and the locked state or unlocked state of the electric lock is held by another voltage lower than the one voltage.   The access control system according to claim 1, wherein the control device includes one power source and a circuit that generates the at least two voltages from the one power source.   The access control system according to claim 1, wherein the control device includes at least two power sources that generate the at least two voltages.   When the control device receives a signal indicating an unlocking state from the electric lock that has not transmitted a signal for unlocking, the control device transmits a signal for locking the electric lock that has not transmitted the signal for unlocking 4. The access control system according to claim 2, further comprising a lock recovery means.   When the control device transmits a signal for locking by the lock recovery unit, the control device includes an adjustment unit for increasing the other voltage by a predetermined voltage when the signal for locking by the lock recovery unit is transmitted. The access control system according to claim 4.   The control device performs adjustment to increase the other voltage by the adjustment unit by a predetermined voltage in each step voltage in the process of gradually increasing the other voltage from a predetermined reference voltage. 6. The access control system according to claim 5, wherein when the adjustment is not performed, the voltage when the adjustment is not performed is set as the other voltage.   It further comprises a sensor that senses that a person has approached the terminal device, and the non-contact IC card reader of the terminal device generates electromagnetic waves when the sensor senses that a person has approached. The access control system according to claim 1.   The access control system according to claim 7, wherein the terminal device includes the sensor.   The access control system according to claim 1, wherein the terminal device includes the control device. The terminal device that includes an electric lock that is locked or unlocked when energized, a control device that controls the electric lock, and a terminal device that includes a non-contact IC card reader, the terminal device that has received a signal from a non-contact IC card, An entry / exit management system that sends a signal to lock or unlock the control device,
It further comprises a sensor that senses that a person has approached the terminal device, and the non-contact IC card reader of the terminal device generates electromagnetic waves when the sensor senses that a person has approached. Entry / exit management system.