JP6330446B2 - Information communication apparatus and automatic transaction apparatus including the same - Google Patents

Description

  The present invention relates to an information communication apparatus and an automatic transaction apparatus including the information communication apparatus, and more particularly to a wireless communication control technique for a wireless communication apparatus built in an ICT (Information and Communication Technology) apparatus.

  Conventionally, industrial devices (information communication devices) such as ICT devices have been connected between devices with signal communication wires such as wire harnesses. By using wireless communication instead of this electric wire, it was possible to reduce the weight and size of the industrial equipment main body, and to reduce the space for arranging the electric wires. For this reason, there is an advantage that the degree of freedom in device design is improved, and further maintenance and convenience are improved.

  On the other hand, when devices are connected using wireless communication inside an industrial device, problems specific to wireless data communication occur. For example, in the wireless LAN of ZigBee (registered trademark), Bluetooth (registered trademark), IEEE802.11b (registered trademark) and IEEE802.11g (registered trademark) using the ISM (Industry Science Medical) band, the frequency of 2.4 GHz band Since communication is performed using a band, there is a problem that an internal device (wireless communication device) malfunctions due to interference from radio waves transmitted (output) from an external wireless communication device (external wireless device). there were.

In addition, when there are many external wireless devices around the installation position of industrial equipment, the wireless communication band to be used may overlap, which causes radio wave interference and communication quality significantly deteriorates. was there.
To deal with this problem, wireless LAN and the like conventionally use conventional communication methods such as CSMA / CA (Carrier Sense Multiple Access / Collision Avoidance) and CSMA / CD (CSMA / Collision Detection). Use it to check if there is a wireless communication device that communicates (emits radio waves) in the surroundings (Carrier Sense), and if not, starts communication (transmits radio waves) Procedure was taken. This reduces the probability that the radio waves interfere with each other by reducing the probability that the communication will collide.

JP-A-10-70770 (Japanese Patent Application No. 8-227008) Japanese Patent Laid-Open No. 11-27197

However, because the frequency band of the ISM (Industry Science Medical) band is narrow, if there are many external wireless devices around the installation location of industrial equipment, the wireless communication bands to be used overlap, and the radio waves interfere with each other. I couldn't avoid all that.
Therefore, the wireless communication device built in the conventional ICT device (information communication device) interferes with the intrusion radio wave that has entered from the outside when the shutter that opens / closes the opening to the outside is opened, There was a case of malfunction.

  The present invention has been made to solve the above problems, and provides an information communication device that avoids the influence of an intruding radio wave even when the shutter is opened, and an automatic transaction device including the information communication device. Let it be an issue.

  In order to solve the above-described problem, an information communication apparatus according to a first aspect of the invention includes a housing having a plurality of wireless communication devices that perform wireless data communication with each other and having an opening communicating with the outside, and an opening of the opening. An information communication device including a shutter that closes, wherein the wireless communication device performs wireless data communication with a stronger noise resistance than when the opening is closed during the opening of the opening. did.

  The information communication device of the second invention broadcasts a use band notification radio wave to the outside of the casing, and the use band notification radio wave is a partner of the wireless data communication while the opening is closed. The configuration is such that it is ignored or discarded by the wireless communication device.

The present invention has the following excellent effects.
According to the first invention and the second invention, even if the shutter is opened, it is possible to avoid the influence of the incoming radio waves entering from the outside, and the internal wireless communication device does not malfunction.

  In addition, according to the first invention, even when the shutter is open, wireless data communication with communication quality almost the same as when the shutter is closed can be performed.

  In addition, according to the second aspect, even if the shutter is once opened and then closed, wireless data communication with communication quality almost the same as before the shutter is opened can be performed.

It is a figure explaining the influence of the electromagnetic wave from the external communication apparatus with respect to the ICT apparatus which concerns on this invention. It is a block diagram which shows the structure of the ICT apparatus which concerns on 1st Embodiment. It is a flowchart of the transaction processing of the automatic transaction apparatus which concerns on 1st Embodiment. It is a figure which shows two modes which the radio | wireless communication apparatus which concerns on 1st Embodiment has. It is a time chart of the mode change operation | movement of the automatic transaction apparatus which concerns on 1st Embodiment. It is a block diagram which shows the structure of the ICT apparatus which concerns on 2nd Embodiment. It is a time chart of the mode change operation | movement of the automatic transaction apparatus which concerns on 2nd Embodiment.

  Hereinafter, an embodiment of the present invention (hereinafter referred to as “the present embodiment”) will be described in detail with reference to the drawings. Each figure is only schematically showing the present invention. Therefore, the present invention is not limited to the illustrated example. Moreover, in each figure, the same code | symbol is attached | subjected about the common component and the same component, and those overlapping description is abbreviate | omitted.

First, the influence of radio waves from an external communication device on the ICT device according to the present invention will be described with reference to FIG. Here, the ICT device is an information communication device, such as a ticket vending machine, vending machine, automatic transaction device (ATM), PC (Personal Computer) or the like that incorporates a wireless communication device that performs wireless data communication. is there.
The ICT device 1 includes a wireless communication device 2A and a wireless communication device 2B, and the wireless communication device 2A and the wireless communication device 2B perform wireless data communication with each other.

  Here, the wireless data communication between the wireless communication device 2A and the wireless communication device 2B is preferably communication using an ISM band. Therefore, a protocol defined by ZigBee, wireless LAN (IEEE802.11b, IEEE802.11g), Bluetooth, or the like may be used, or an original protocol may be defined and used. Further, communication using the 5 GHz band as well as the 2.4 GHz band ISM band (for example, communication using a protocol defined in IEEE802.11a (registered trademark)) may be used.

There are a wireless LAN access point 304 and a wireless LAN terminal 305 in the vicinity of the ICT device 1, and the access point 304 and the terminal 305 perform wireless data communication with each other.
At this time, if the shutter 3 of the ICT device 1 (card unit 6) is open, the radio wave (intrusion radio wave) output (transmitted) from the access point 304 or the terminal 305 from the opening is inside the ICT device 1. I will enter. This intrusion radio wave becomes an interference wave 307, which affects wireless data communication between the wireless communication device 2A and the wireless communication device 2B.
In order to solve the above problems, the ICT device 1 of the present invention includes the components shown in FIG.

<< First Embodiment >>
FIG. 2 is a block diagram illustrating a configuration of the ICT device according to the first embodiment. Here, an ATM 1A is shown as an example of the ICT device 1, and the card unit 6 built in the ATM 1A will be described.

(Card unit 6)
The card unit 6 is a device that reads data recorded on a medium by inserting a medium such as a cash card or a credit card, and outputs the read data (read data) to the main control unit (control unit 4) of the ATM 1A. To do.
The card unit 6 has a housing formed of a material that absorbs or reflects radio waves so that the radio waves do not enter the inside from the outside. An opening into which a medium (cash card or the like) is inserted is provided on the wall (outer wall) of the housing, and the opening is opened / closed by the shutter 3. The shutter 3 is also made of a material that absorbs or reflects radio waves. Therefore, when the opening is closed by the shutter 3, radio waves do not enter (cannot) enter the card unit 6.

  The housing of the card unit 6 in the first embodiment is closed with a wall formed of a material that absorbs or reflects radio waves. This “material that reflects radio waves” is, for example, a material obtained by metal plating or metal deposition on a resin. The “material that absorbs radio waves” includes, for example, a printed circuit board having an EBG (Electromagnetic Band Gap) structure, a magnetic wave absorbing material (eg, iron, nickel, ferrite, etc.), a dielectric wave absorbing material (eg, foamed polyethylene). Materials containing graphite (carbon particles) and rubber carbon particles, etc.), conductive radio wave absorbing materials (cloths made of conductive fibers woven into cloth, dielectric sheets deposited with indium tin oxide, etc.) A metal that absorbs these radio waves is attached to the wall surface of the formed casing.

  The ATM 1A (ICT device 1) includes a control side radio device 21 (21a, 21b,...) And a data acquisition side radio device 22 (22a, 22b,...) As the radio communication device 2 built in the card unit 6. ), The shutter 3 (3a, 3b,...) That opens / closes the opening of the card unit 6, the control unit 4 (data processing unit 104, device control unit 105, shutter opening / closing timing management unit 106), storage unit 5 , A mechanical unit 10, and an information acquisition unit 121 (sensor unit 121 a, medium reading unit 121 b, etc.) built in the card unit 6, a sub-control unit 122, and a mechanical unit 123.

(Control unit 4)
The control unit 4 is configured by, for example, a CPU (Central Processing Unit), and is realized by the CPU executing a program stored in the storage unit 5, an OS (Operating System), or the like. The control unit 4 is connected to each component constituting the ATM 1A via a control line (PCI bus or the like), and controls each component to function.

  The control unit 4 is connected to the control-side radio 21 built in the card unit 6 through a wired control line. This control line connects the control unit 4 and the control side radio device 21 through a hole penetrating the outer wall of the card unit 6. The holes are processed so that radio waves do not enter the inside of the card unit 6 from the outside.

  In the first embodiment, the control unit 4 executes the transaction process selected on the touch panel display 15 or controls the control-side wireless device 21 (wireless communication device 2) to send data to the control-side wireless device 21. Wireless data communication with the wireless device 22 is performed, the shutter 3 is controlled to open and close, and the mechanical unit 10 is controlled based on the data acquired by the control-side wireless device 21. Details of the control unit 4 will be described later.

(Storage unit 5)
The storage unit 5 is a component that stores data, a program, and an OS, and is a storage unit such as an HDD (Hard Disc Drive), a RAM (Random Access Memory), or an optical disc.

(Shutter 3)
The shutter 3 opens / closes the opening of the card unit 6. The shutter 3 is a shutter that covers an opening formed of a metal that absorbs or reflects radio waves, and is a drive (not shown) that drives the shutter 3 in accordance with an instruction from the control unit 4 (shutter opening / closing timing management unit 106). A part.

(Mechanical part 10)
The mechanical unit 10 is a component included in the ATM 1A that receives an instruction from the control unit 4 and performs a predetermined operation. For example, it is the banknote handling part 11, the coin handling part 12, the proximity sensor 13, the receipt part 14, the touch panel display 15, etc. with which a general automatic transaction apparatus is provided. These components will be described later. Here, the card unit 6 is also included in the mechanical unit 10, and the shutter 3 included in the card unit 6 is controlled by the device control unit 105 via the shutter opening / closing timing management unit 106.

(Information acquisition unit 121)
The information acquisition unit 121 (121a, 121b,...) Is a device built in the card unit 6, and is a component that passes the acquired information to the data acquisition side radio device 22 (radio control unit 117).
In the first embodiment, the information acquisition unit 121a is a sensor unit that detects that a medium (for example, a cash card) has been inserted from the opening by light, magnetism, or the like, and detects the detected information (acquisition information) as data. The data is transferred to the acquisition-side radio 22a (radio control unit 117).
The information acquisition unit 121b is a medium reading unit that reads information from a medium inserted from the opening, and passes the read information (acquisition information) to the data acquisition side radio device 22b.
Here, the information acquisition unit 121 may be a component that passes the acquisition information to the data acquisition side radio device 22 and may be, for example, a button or a switch.

(Sub-control unit 122)
The sub-control unit 122 is built in the card unit 6 and receives an instruction from the wireless control unit 117 of the data acquisition side radio device 22 and instructs the mechanical unit 123 to perform a predetermined operation in accordance with the instruction.

(Mechanical part 123)
The mechanical part 123 is a mechanical part built in the card unit 6, and receives a command from the sub-control part 122 and performs a predetermined operation. For example, a mechanism for discharging the medium from the opening. For convenience, the description of the specific operation of the mechanical unit 123 is omitted.

(Control unit 4)
The control unit 4 includes a data processing unit 104, a device control unit 105, and a shutter opening / closing timing management unit 106.
The data processing unit 104 is connected to the control-side radio 21 (21a, 21b,...), The device control unit 105, and the like, and controls the control-side radio 21 (wireless communication device 2) to control the control-side radio 21. To perform wireless data communication with the data acquisition side wireless device 22. Further, the data (acquisition information) acquired from the control-side radio device 21 is processed and passed to the device control unit 105.

Based on the data acquired from the data processing unit 104, the device control unit 105 instructs the shutter opening / closing timing management unit 106 to open / close the shutter and controls the mechanical unit 10.
In the first embodiment, the device control unit 105 receives data (acquisition information) passed from the information acquisition unit 121 via the data acquisition side radio device 22, the control side radio device 21, and the data processing unit 104 in this order. Obtaining and performing predetermined processing using the obtained information, the shutter opening / closing timing management unit 106 is instructed to open / close the shutter.

The shutter opening / closing timing management unit 106 instructs the shutter 3 and the control-side wireless device 21 to open / close the shutter.
In the first embodiment, the shutter opening / closing timing management unit 106 receives a shutter opening / closing instruction from the device control unit 105, and at a predetermined timing using a timer (not shown), the shutter 3 (3a, 3b,... Instruct to open / close the shutter. Further, the shutter opening / closing timing management unit 106 also gives the instruction to open / close the shutter to the control-side radio 21 (21a, 21b,...). Thereby, the timing at which the shutter 3 opens / closes the shutter and the timing at which the control-side wireless device 21 changes the mode (normal mode 401 / power-up mode 402) can be matched.
The shutter opening / closing timing management unit 106 may be a control unit (CPU) built in the card unit 6.

(Control-side radio 21)
The control-side wireless device 21 (wireless communication device 2) is built in the card unit 6 and includes a wireless control unit 111, a wireless communication unit 112, and a power supply unit 113. The wireless control unit 111 is connected to each component constituting the control-side wireless device 21 via a wired control line, and is also connected to the control unit 4 (data processing unit 104, shutter opening / closing timing management unit 106) via a wired control line. The

The radio control unit 111 is a configuration unit that controls each configuration unit configuring the control-side radio 21 to function in accordance with an instruction from the control unit 4.
The wireless control unit 111 passes the data (acquisition information) acquired from the wireless communication unit 112 to the control unit 4 (data processing unit 104). On the other hand, when there is a wireless data transmission request (instruction) for arbitrary data (digital data) from the control unit 4 (data processing unit 104), the wireless control unit 111 transmits the data together with the wireless data transmission request to the wireless communication unit. 112.

In the first embodiment, when receiving a shutter opening / closing instruction from the shutter opening / closing timing management unit 106, the wireless control unit 111 performs a process of changing the mode (normal mode 401 / power-up mode 402). In this case according to the mode to be changed, the radio control unit 111, transmission rate shown in FIG. 4, the error correction, number of retransmissions, to change parameters such as transmission power, instructs the wireless communication unit 112.

The wireless communication unit 112 is a component that performs wireless data communication via an antenna.
The wireless communication unit 112 converts an analog signal received by the antenna into digital data and passes the data to the wireless control unit 111. In addition, the wireless communication unit 112 converts the digital data acquired together with the wireless data transmission request from the wireless control unit 111 into an analog signal and transmits the analog signal to the antenna.

The power source unit 113 is a power source that supplies power necessary for the operation of each component of the control-side radio device 21 and is, for example, a battery. Further, power supplied to the card unit 6 from a power supply unit (not shown) of the ATM 1A may be wirelessly transmitted inside the housing and supplied to the control-side radio 21.
In the first embodiment, when the control-side wireless device 21 performs wireless data communication in the power-up mode 402, the power supply unit 113 supplies power to the wireless communication unit 112 so that the transmission power is higher than that in the normal mode 401. Supply.

(Data acquisition side radio device 22)
The data acquisition side wireless device 22 (wireless communication device 2) is built in the card unit 6 and includes a wireless control unit 117, a wireless communication unit 118, and a power supply unit 119.
The wireless control unit 117 acquires the acquisition information from the information acquisition unit 121 and passes it to the wireless communication unit 118. In addition, when data is received from the wireless communication unit 118, it operates according to the contents of the data. For example, by passing data (medium ejection instruction) to the sub-control unit 122, the mechanism unit 123 (medium ejection mechanism unit not shown) is operated under the control of the sub-control unit 122, and the medium is ejected to the outside of the card unit 6. To do.
The wireless communication unit 118 and the power supply unit 119 perform the same processing as the wireless communication unit 112 and the power supply unit 113 included in the control-side wireless device 21, and thus description thereof is omitted.

  In FIG. 2, for convenience, the data acquisition side radio devices 22a, 22b, and 22c are connected to the same sub control unit 122, but may be connected to another sub control unit.

(Mechanical part 10)
Hereinafter, although not directly related to the present embodiment, the mechanical unit 10 constituting the ATM 1A will be described.
The banknote handling part 11 is a structure part which handles the deposit or withdrawal of a banknote. The banknote handling unit 11 has a function of taking in banknotes inserted into a banknote deposit / withdrawal port (not shown) at the time of depositing, storing the banknotes in a storage (not shown) after the control unit 4 counts them. Moreover, the banknote handling part 11 is equipped with the function etc. which take out a banknote from a storage at the time of payment, and discharge | emit it to a banknote depositing / withdrawing port.

  The coin handling unit 12 is a component that handles deposits and withdrawals of coins. Similar to the banknote handling unit 11, the coin handling unit 12 takes in coins inserted into a coin deposit / withdrawal port (not shown) at the time of depositing, causes the control unit 4 to count, and stores the coin in a hangar (not shown). Has function. Moreover, the coin handling part 12 is equipped with the function etc. which take out a coin from a storage at the time of payment, and discharge | emit it to a coin deposit or withdrawal port.

The proximity sensor 13 is a component that detects a person approaching the ATM 1 and notifies the controller 4 of the person.
The receipt unit 14 is a component that prints a transaction history on paper. This sheet is discharged together with the medium to the card insertion / discharge port.
The touch panel display 15 (screen display unit) is a component having a screen on which information for a customer (operator) who operates the ATM 1A and makes a transaction or the like is displayed.

≪Flowchart≫
FIG. 3 is a flowchart of transaction processing of the ICT device (ATM 1A) according to the first embodiment.
First, when the user (customer) approaches the ATM 1A, the proximity sensor 13 detects the user (step S101), and the control unit 4 of the ATM 1A displays a screen on the touch panel display 15 (step S102).
When the user operates the touch panel display 15 of the ATM 1A and the user presses any button, a transaction start instruction is input (step S103). Here, for example, it is assumed that an instruction to start a withdrawal transaction due to pressing of the “drawer” button is input.

The control unit 4 starts a medium take-in procedure.
First, the control unit 4 causes the touch panel display 15 to display a screen that prompts the user to insert a medium (cash card or the like) into the opening of the card unit 6.
Then, after changing from the normal mode 401 to the power-up mode 402 (step S104), the control unit 4 opens the shutter 3 of the card unit 6 (step S105). That is, the control unit 4 changes from the normal mode 401 to the power-up mode 402 immediately before the shutter 3 is opened.

The user inserts a medium into the opening of the card unit 6 while viewing the screen displayed on the touch panel display 15 (step S106).
The card unit 6 (the sensor unit 121a, the sub control unit 122, and the mechanical unit 123) takes in the medium inside (step S107).
The controller 4 closes the shutter 3 of the card unit 6 (step S108), and then changes from the power-up mode 402 to the normal mode 401 (step S109).
The card unit 6 (medium reading unit 121b) reads the medium and acquires information (read data) from the medium (step S110). The data acquisition side radio device 22a transmits this read data to the control side radio device 21a by radio data communication. The control unit 4 acquires read data via the control-side radio device 21a.

Then, the execution of the withdrawal transaction process by the control unit 4 is started (step S111). The details of this withdrawal transaction process will be omitted.
Thereafter, the banknote handling unit 11 / coin handling unit 12 takes out banknotes / coins from a hangar (not shown) and discharges them to the banknote deposit / withdrawal port / coin deposit / withdrawal port, thereby completing the withdrawal transaction process by the control unit 4. (Step S112).

The control unit 4 starts the medium discharge procedure.
First, after changing from the normal mode 401 to the power-up mode 402 (step S113), the control unit 4 opens the shutter 3 of the card unit 6 (step S114). The card unit 6 (medium reading unit 121b) discharges the medium to the outside (step S115). After closing the shutter 3 of the card unit 6 (step S116), the control unit 4 changes from the power-up mode 402 to the normal mode 401 (step S117).
And ATM1A completes a process.

≪Parameter≫
FIG. 4 is a diagram illustrating two modes of the wireless communication device according to the first embodiment.
The wireless communication device 2 (the control-side wireless device 21 and the data-acquisition-side wireless device 22) operates in the normal mode 401 or the power-up mode 402 (anti-interference wave mode), and operates by changing the two modes (states). (State transition).
The wireless communication device 2 in the first embodiment makes a state transition from the normal mode 401 to the power-up mode 402 immediately before the shutter 3 is opened. Conversely, when the shutter 3 is closed, the state transitions from the power-up mode 402 to the normal mode 401.

In the normal mode 401, since the shutter 3 is closed, a radio wave (interference wave) does not enter (cannot) enter the card unit 6, and a parameter (normal communication parameter) is set accordingly.
As a result, as shown in FIG. 4, the normal communication parameters are set so that the transmission speed is normal, the error correction capability is weakened so as not to become overspec, the number of retransmissions is reduced, and the transmission power is also set low. At least, even if there is a radio wave (interference wave) that can enter the card unit 6 even when the shutter 3 is closed, this normal communication parameter is communicated due to the influence of the radio wave that has entered (intrusion radio wave). It is set to the extent that quality does not deteriorate.

On the other hand, in the power-up mode 402, since the shutter 3 is open, it is assumed that radio waves (interference waves) enter the card unit 6 so that they are not affected by the invading radio waves (intrusion radio waves). A parameter (interference immunity communication parameter) is set so as to enhance the interference immunity performance. For example, even if the power consumption increases, a parameter (interference immunity communication parameter) is set giving priority to the improvement in interference immunity performance.
As a result, as shown in FIG. 4, the anti-interference communication parameters are set such that the transmission speed is slow (low speed), the error correction is strengthened, the number of retransmissions is increased, and the transmission power is increased.

≪Time chart≫
FIG. 5 is a time chart of the mode changing operation of the automatic transaction apparatus according to the first embodiment.
FIG. 5 shows a time chart of a mode change operation performed between the shutter opening / closing timing management unit 106, the control-side radio device 21, and the data acquisition-side radio device 22. Although not shown here, in actuality, the shutter opening / closing timing management unit 106 operates in response to an instruction from the device control unit 105 (FIG. 2), and the data acquisition side radio device 22a has the sensor unit 121a (FIG. 2). When a medium inserted from the opening is detected, a process of transmitting acquisition information indicating the detection to the control-side wireless device 21 is performed.

First, it is assumed that the control-side wireless device 21 and the data acquisition-side wireless device 22 are performing wireless data communication in the normal mode 401 (step S201).
Here, the shutter opening / closing timing management unit 106 instructs the control-side wireless device 21 to open the shutter 3 (shutter opening) (step S202). In response to the shutter opening instruction, the control-side radio 21 instructs the data acquisition-side radio 22 to change the state (mode) to the power-up mode 402 (step S203). Thereafter, when a response signal (permission) is received from the data acquisition side radio device 22, the control side radio device 21 makes a state transition to the power-up mode 402 (step S205).

When the data acquisition side radio 22 receives an instruction to change to the power-up mode 402 from the control-side radio 21 (see step S203), if the state can be changed to the power-up mode 402, the data acquisition side radio 22 will change the state from now. Is transmitted to the control-side radio 21 (step S204), and the state transitions to the power-up mode 402 (step S206).
Thereafter, the control-side wireless device 21 and the data acquisition-side wireless device 22 perform wireless data communication in the power-up mode 402 (step S207).

  Thereafter, the ATM 1A finishes the predetermined process (see step S112 in FIG. 3), and the shutter opening / closing timing management unit 106 instructs the control side radio 21 to close the shutter 3 (shutter close) (step S301). ). In response to the shutter closing instruction, the control-side wireless device 21 instructs the data acquisition-side wireless device 22 to change the state (mode) to the normal mode 401 (step S302). Thereafter, when a response signal (permission) is received from the data acquisition side radio device 22, the control side radio device 21 makes a state transition to the normal mode 401 (step S304).

When the data acquisition side radio device 22 receives an instruction to change to the normal mode 401 (see step S302) from the control side radio device 21, if the state can be changed to the normal mode 401, the data acquisition side radio device 22 indicates that the state will be changed. A response signal (permission) is transmitted to the control-side radio 21 (step S303), and the state transitions to the normal mode 401 (step S305).
Thereafter, the control-side wireless device 21 and the data acquisition-side wireless device 22 perform wireless data communication in the normal mode 401 (step S306).

  As described above, when the shutter 3 is open during the transaction of the ATM 1A (ICT device 1), the radio wave of the nearby wireless LAN enters from the shutter 3. However, according to ATM1A which concerns on 1st Embodiment, when the shutter 3 is open, it changes into the power-up mode 402, temporarily improves the performance of the radio | wireless communication apparatus 2 which ATM1A incorporates, and is Communication quality can be maintained by increasing interference performance. Thereby, it can be expected that the operation of the wireless ICT device is continued regardless of the open / closed state of the shutter 3. In addition, it is possible to provide an information communication device that does not interfere with an intrusion radio wave from the outside as an interference wave, affecting the communication state, that is, resistant to communication failures.

<< Second Embodiment >>
In the ICT device according to the second embodiment, when the shutter is open, the radio data communication between the radio communication devices 2 is temporarily stopped, so that radio waves entering from the outside (intrusion radio waves) become interference waves. This is an apparatus using a method for avoiding a problem that affects wireless data communication between the wireless communication devices 2.

FIG. 6 is a block diagram illustrating a configuration of an ICT device according to the second embodiment.
The ATM 1B (ICT device 1) according to the second embodiment has the same configuration as the ATM 1A according to the first embodiment, but the wireless communication device 2 (control-side radio 21, data acquisition-side radio 22). Some functions are different.
In particular, in the card unit 6B provided in the ATM 1B according to the second embodiment, even if the shutter 3 is closed at the opening, the contact surface between the housing and the shutter 3 is in a point contact state and is completely shielded. However, some radio waves enter the inside of the card unit 6B (housing) from the outside.

For this reason, when the shutter 3 is open during the transaction of the ATM 1B, radio waves emitted from the access point 304 or the terminal 305 (see FIG. 1) of the neighboring wireless LAN enter the shutter 3. Therefore, when the shutter 3 is opened, there is a method to avoid the communication failure that temporarily stops the wireless data communications between wireless communication devices 2B of the card unit 6 in B occurs between the wireless communication device 2B.

However, the neighboring wireless LAN access point 304 or terminal 305 confirms (carrier sense) whether there is a wireless communication device that is transmitting radio waves in the vicinity, and if not, starts transmission of radio waves.
Therefore, while the wireless data communication between the wireless communication devices 2B in the card unit 6 is temporarily stopped, the neighboring wireless LAN access point 304 or the terminal 305 is used in the band used by the wireless communication device 2B. Sometimes performed wireless data communication.
Thereby, when the wireless data communication is resumed after the shutter 3 is closed, there is a problem that the use band is overlapped and interference occurs.

  Therefore, the wireless communication device 2B (control-side wireless device 21B, data-acquisition-side wireless device 22B) of the second embodiment transmits a use band notification radio wave while the shutter 3 is open.

(Wireless communication device 2B)
Wireless communication apparatus 2B according to the second embodiment (the control side radio 21B, the data acquisition side radio 22B) operates in a normal mode 401 or Damimo de (avoiding interference wave mode), changes the two modes (states) Operate (change state).
Wireless communication device 2B is immediately before the shutter 3 is opened, a state transition from the normal mode 401 to Damimo de. Conversely, when the shutter 3 is closed, a state transition to Damimo de whether we normal mode 401.

  The wireless communication device 2B does not have a carrier sense function. Generally, a wireless communication device that communicates with a wireless LAN has a carrier sense function. After confirming whether there is a wireless communication device that transmits radio waves in the surrounding area (carrier sense), Since data transmission is performed, a delay occurs until the data is transmitted. However, in the present invention, it is necessary for the wireless communication unit 112B to immediately transmit data at the timing when control data is sent from the control unit 4, and it is not possible to provide time for performing carrier sense. Therefore, this wireless communication device 2B does not have a carrier sense function, that is, performs wireless communication without performing carrier sense.

In the normal mode 401, the shutter 3 is closed, but a structure in which some radio waves enter from the outside is set, and parameters (normal communication parameters) corresponding to the structure are set. At least, the normal communication parameter even if there even though the shutter 3 is closed radio waves can enter the inside of the card unit 6 B (interference wave), the influence of radio waves (invasion wave) that has its intrusion The communication quality is set so as not to deteriorate.

On the other hand, in Damimo de (avoiding interference wave mode), to prohibit the wireless communication device 2B (control side radio 21B, the data acquisition side radios 22B) wireless data communication by all.
Thus, since wireless data communication is not performed while the shutter 3 is open, even if a radio wave enters from the outside due to the shutter 3 being open, the intrusion radio wave becomes an interference wave 307, and the wireless communication device The wireless data communication between 2A and the wireless communication device 2B is not affected (see FIG. 1).

  The control-side radio 21B and the data-acquisition-side radio 22B in the second embodiment are dummy signal generation units in addition to the components included in the control-side radio 21 and the data-acquisition-side radio 22 in the first embodiment. 114 and 120 further differ.

(Control-side radio 21B)
The dummy signal generation unit 114 included in the control-side radio 21B is a function included in the wireless communication unit 112B. The dummy signal generation unit 114B generates a dummy signal (analog signal) in response to an instruction from the radio control unit 111B. Signal) to the antenna.
This dummy signal is meaningless even if the data acquisition side radio device 22B receives it, for example, an analog signal such as a continuous wave. Even if this dummy signal is received, the data acquisition side radio device 22B ignores or discards it.

In the second embodiment, when the wireless control unit 111B receives an instruction to open / close the shutter (shutter 3) from the shutter opening / closing timing management unit 106, the wireless control unit 111B performs a process of changing the mode (normal mode 401 / dummy mode). Do. In this case according to the mode to be changed, the radio control unit 111B, the transmission rate, error correction, number of retransmissions, to change parameters such as transmission power, instructs the radio communication unit 112B.

(Data acquisition side radio 22B)
In the data acquisition side radio device 22B, the radio communication unit 11 8 B has the function of the dummy signal generation unit 120 as in the control side radio device 21B. Since the function of the dummy signal generation unit 120 is the same as that of the dummy signal generation unit 114, description thereof is omitted.
The dummy signal generated by the dummy signal generation unit 120 has no meaning even if it is received by the control-side radio 21B, for example, an analog signal such as a continuous wave. Even if this dummy signal is received, the control-side radio 21B ignores or discards it.

(Use band notification radio wave)
The use band notification radio wave is a signal in which a dummy signal is transmitted as a radio wave from an antenna.
By transmitting (broadcasting) this use band notification radio wave, when there is a wireless LAN access point or terminal around ATM 1B, the use band that the wireless communication device 2B built in ATM 1B uses for wireless data communication is set. You can be notified.

≪Time chart≫
FIG. 7 is a time chart of the mode changing operation of the automatic transaction apparatus according to the first embodiment.
FIG. 7 shows a time chart of a mode change operation performed among the shutter opening / closing timing management unit 106, the control-side radio device 21B, and the data acquisition-side radio device 22B. Although not shown here, in practice, the shutter opening / closing timing management unit 106 operates in response to an instruction from the device control unit 105 (FIG. 6), and the data acquisition-side radio 22Ba is operated by the sensor unit 121a (FIG. 6). When a medium inserted from the opening is detected, a process of transmitting acquisition information indicating the detection to the control-side radio 21B is performed.

First, it is assumed that the control-side wireless device 21B and the data acquisition-side wireless device 22B perform wireless data communication in the normal mode 401 (step S601).
Here, the shutter opening / closing timing management unit 106 instructs the control-side radio 21B to open the shutter 3 (shutter opening) (step S602). Control side radio 21B, in response to the shutter opening instructions, state (mode) to change the Damimo de, instructs the data acquisition side radio 22B (step S603). Thereafter, when receiving a response signal from the data acquisition side radio 22B (allowed), the control side radio 21B also state transition Damimo de (step S605).

Data acquisition-side radio 22B when receiving instruction to change Damimo Dohe (see step S603) from the control side radio 21B, Damimo de state transition if a response signal indicating that transition from now state ( It sent a permission) to the control side radio 21B (step S604), and the state transitions to Damimo de (step S606).
Thereafter, while in the state of Damimo de, from the control side radio 21B and the data acquisition side radio 22B, the dummy signal is continuously transmitted as a radio wave (used band notifying radio waves) from the antenna (step S607).

  Thereafter, the ATM 1B finishes the predetermined processing (see step S112 in FIG. 3), and the shutter opening / closing timing management unit 106 instructs the control-side radio 21B to close the shutter 3 (shutter close) (step S701). ). In response to the shutter closing instruction, the control-side radio 21B stops generating the dummy signal (stops transmission of the dummy signal), and changes the state (mode) to the normal mode 401 so that the data-acquisition-side radio 22B is instructed (step S702). Thereafter, when a response signal (permission) is received from the data acquisition side radio device 22B, the control side radio device 21B makes a state transition to the normal mode 401 (step S704). Thereby, transmission of the use band notification radio wave from the control-side radio 21B is stopped.

When receiving the instruction to change to the normal mode 401 (see step S702) from the control-side radio 21B, the data acquisition side radio 22B stops generating the dummy signal if the state transition to the normal mode 401 is possible. (Dummy signal transmission is stopped), a response signal (permission) indicating that the state transition is to be performed is transmitted to the control-side radio device 21B (step S703), and the state transition is made to the normal mode 401 (step S705). Thereby, the transmission of the use band notification radio wave from the data acquisition side radio device 22B is stopped.
Thereafter, the control-side wireless device 21B and the data acquisition-side wireless device 22B perform wireless data communication in the normal mode 401 (step S706).

As described above, when the shutter 3 is open during the transaction of the ATM 1B (ICT device 1), the radio wave of the nearby wireless LAN enters from the shutter 3. However, according to ATM1B according to the second embodiment, when the shutter 3 is opened, by changing the Damimo de, after it transmitted as a radio wave (used band notifying Telecommunications) a dummy signal from the antenna, built ATM1B Wireless data communication between the wireless communication devices 2 to be temporarily stopped (wireless data communication is prohibited). Since the usage band notification radio wave is transmitted, the wireless LAN access point 304 and the terminal 305 can recognize that the channel (frequency band) used in the usage band notification radio wave is being used, so the channels overlap. (Occupy) can be avoided.
In this way, it is possible to avoid the occurrence of interference due to overlapping (occupied) channels, so that the quality of wireless data communication can be maintained.

  The present invention is not limited to the above-described embodiment, and various changes and modifications can be made without departing from the gist of the present invention.

(Energy saving setting)
For example, when the use of a battery as a power source is assumed, the normal communication parameter and the anti-interference communication parameter are set so that the power consumption is reduced as much as possible after ensuring the communication quality.

(Examples other than the card unit 6)
In the embodiment, the card unit 6 including the shutter 3 is shown. However, for example, a unit in which the shutter 3 is provided at a banknote deposit / withdrawal port or a coin deposit / withdrawal port of ATM 1A may be used. Further, in the case of a ticket vending machine or a vending machine, for example, a shutter 3 may be provided and operated at a bill insertion slot, a coin insertion slot, or a product outlet. Moreover, a ticket vending machine, a vending machine, an automatic transaction apparatus, etc. may be sufficient. The ticket vending machine, the vending machine, and the automatic transaction apparatus itself are a single case provided with the shutter 3, and the case may be formed of metal that absorbs or reflects radio waves so that the radio waves do not enter the inside from the outside. .

(Wireless communication equipment 2)
In the embodiment, the card unit 6 includes a plurality of control-side radio devices 21 and a plurality of data-acquisition-side radio devices 22. However, the card unit 6 may be one (single).

(Received signal strength threshold setting)
In the first embodiment, the wireless communication unit (112, 118) sets a predetermined threshold for the intensity (reception power value) of the received radio wave, and has received that the received radio wave does not have an intensity exceeding the predetermined threshold. It may have a function of discarding radio wave data.
As a result, the wireless communication unit (112, 118) of the wireless communication device 2 (the control-side wireless device 21 and the data-acquisition-side wireless device 22) that is performing wireless data communication in the power-up mode 402 allows the received radio wave to have a predetermined threshold. If the strength (reception power value) is not exceeded, the received radio wave data is discarded. Therefore, it is possible to further avoid the influence of the incoming radio waves.

1 ICT equipment 1A, 1B ATM (automatic transaction equipment) (ICT equipment)
2 (2A, 2B) Wireless communication device 3 Shutter 4 Control unit 5 Storage unit 6 Card unit 10 Mechanical unit 11 Bill handling unit 12 Coin handling unit 13 Proximity sensor 14 Receipt unit 15 Touch panel display 21 (21a, 21b, ...) Control side Radio (wireless communication equipment)
22 (22a, 22b, ...) Data acquisition side radio (wireless communication equipment)
104 Data processing unit 105 Device control unit 106 Shutter opening / closing timing management unit 111 Radio control unit (control-side radio)
112 Wireless communication unit (control-side radio)
113 Power supply (control side radio)
114 Dummy signal generation unit (wireless communication unit of control side radio)
117 Wireless control unit (data acquisition side wireless device)
118 Wireless communication unit (data acquisition side wireless device)
119 Power supply (data acquisition side radio)
120 Dummy signal generator (wireless communication unit of data acquisition side radio)
121 Information acquisition unit 121a Sensor unit (information acquisition unit)
121b Medium reading unit (information acquisition unit)
122 Sub-control unit 123 Mechanical unit 304 Access point 305 Terminal 307 Intrusion radio wave (interference wave)
401 Normal mode 402 Power-up mode (noise resistance enhancement mode)

Claims (9)

A housing having a plurality of wireless communication devices that perform wireless data communication with each other and having an opening that leads to the outside,
An information communication device comprising a shutter that opens / closes the opening,
The wireless communication device is:
An information communication device that performs wireless data communication while opening the opening with stronger noise resistance than when the opening is closed. The information communication device according to claim 1, wherein the casing and the shutter are made of metal or metal-plated or metal-deposited resin. The information communication apparatus according to claim 1, wherein the casing and the shutter are made of a radio wave absorbing material. Wireless data communication with enhanced noise resistance
The process according to any one of claims 1 to 6, wherein at least one of a process for reducing a transmission rate, a process for increasing error correction, a process for increasing the number of retransmissions, and a process for increasing transmission output is performed. 4. The information communication device according to any one of 3. The wireless communication device is:
During opening of the opening,
Instead of performing wireless data communication with stronger noise resistance than during closing of the opening,
The information communication apparatus according to claim 1, wherein a use band notification radio wave is broadcast to the outside of the housing. The use band notification radio wave is
The information communication apparatus according to claim 5, wherein the information communication apparatus is ignored or discarded by another wireless communication device that is a partner of the wireless data communication while the opening is closed. The wireless communication device is:
7. The radio wave data received by the wireless data communication is compared with a predetermined threshold value, and radio wave data having an intensity less than the predetermined threshold value is discarded. Information communication device described in the section. A unit including a plurality of wireless communication devices that perform wireless data communication with each other, and a housing having an opening that leads to the outside;
A shutter for opening / closing the opening;
An automatic transaction apparatus comprising an input unit for selecting and inputting a financial transaction, and performing a selected financial transaction,
The wireless communication device is:
An automatic transaction apparatus that performs wireless data communication with stronger noise resistance than when the opening is closed immediately before the opening is opened due to the selective input of the financial transaction. The automatic transaction apparatus according to claim 8, wherein the unit is a medium reading apparatus into which a medium is inserted from the opening.

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