JP4385545B2 - Mobile phone terminal - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wireless communication system, and more particularly to a wireless communication system that allows a visually impaired person to safely cross a pedestrian crossing.
[0002]
[Prior art]
Conventionally, traffic lights are provided on pedestrian crossings so that pedestrians can pass safely.
[0003]
However, it is very inconvenient for traffic weak persons such as visually handicapped persons to recognize the state with a normal traffic signal.
[0004]
Therefore, recently, there is a “push button” on the traffic signal on the pedestrian crossing, and when this “push button” is pressed, for example, music flows in conjunction with the traffic signal status, There is a system devised so that the state of the traffic light can be recognized even if there is.
[0005]
[Problems to be solved by the invention]
However, in the case of the system using the above-mentioned “push button”, the visually impaired person searches for the “push button” provided near the traffic signal on the pedestrian crossing and does not go to that position. This action is very difficult for visually impaired people.
[0006]
The present invention has been made in view of the above points, and an object of the present invention is to provide a wireless communication system in which a visually impaired person can easily and safely cross a pedestrian crossing.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the wireless communication system of the present invention searches for a mobile phone terminal within a communicable range from its own device and transmits a traffic signal status information, and the status signal It comprises a mobile phone terminal that analyzes information and notifies the user of voice.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0009]
The present invention pays attention to a Bluetooth function for realizing communication between terminals located at a short distance, and a mobile phone terminal equipped with the Bluetooth function and a traffic signal are used to allow a traffic weak to safely cross a traffic signal. It provides a system that can be used on sidewalks.
[0010]
A traffic signal installed at a pedestrian crossing connects to a mobile phone terminal within the Bluetooth connection range, and transmits status information of the traffic signal.
[0011]
The mobile phone terminal that has received this state information notifies the user by voice when it is determined that the vehicle can be crossed (= the traffic light is blue), and guides the user if the user intends to cross.
[0012]
In addition, when it is determined that the vehicle is in a crossing impossible state (= the traffic light is red), a request to preferentially change the traffic signal to a trafficable state (= blue) is transmitted to the traffic signal. After that, the mobile phone terminal that has received the notification that it has been changed to the crossable state (= blue) notifies the user to that effect by voice and performs guidance.
[0013]
At this time, the ID number for identifying the pedestrian crossing and the traffic signal is stored in the mobile phone device until the user's crossing is completed, and it is possible to prevent duplicate guidance within the same pedestrian crossing. Identify.
[0014]
In addition, when the traffic signal changes during the guidance, the signal cannot be crossed (= red), interrupt processing is performed, and the user is immediately notified that the signal has been changed.
[0015]
FIG. 1 is a block diagram showing a configuration of a wireless communication system according to an embodiment of the present invention.
[0016]
As shown in FIG. 1, the wireless communication system according to the present embodiment includes a mobile phone terminal 1 and a traffic signal device 10.
[0017]
In FIG. 1, the mobile phone terminal 1 stores a control unit 2 that controls instructions, a voice unit 3 that controls voice, and the storage of recently used traffic signal ID numbers, crosswalk ID numbers, and traffic signal authentication keys. A memory 4 to be configured, a BT communication unit 5 that controls Bluetooth communication, a BT authentication unit 6 that performs Bluetooth connection authentication with other terminals, and an operation unit 7 that controls key operations from the user. Is done.
[0018]
The traffic signal 10 includes a control unit 11 that performs signal state control, a detection unit 12 that detects the state of the traffic signal 10, a BT detection unit 13 that detects a mobile phone terminal capable of Bluetooth communication, and Bluetooth communication. A BT communication unit 14 that performs control, a BT authentication unit 15 that performs Bluetooth connection authentication with a mobile phone terminal, and a memory 16 that stores a crosswalk ID number and a traffic signal authentication key corresponding to the traffic signal It is configured.
[0019]
Next, the operation of the present embodiment will be described in detail with reference to FIG. 1, FIG. 2, and FIG.
[0020]
First, the initial setting of the mobile phone terminal 1 will be described.
[0021]
The mobile phone terminal 1 holds a Bluetooth authentication key (traffic signal authentication key) for establishing communication with the traffic signal 10 in its own mobile phone terminal. Further, when the mobile phone terminal 1 is powered on, the Bluetooth power is turned on, and a connection request from the traffic signal 10 is accepted. When the power is initially turned on, the storage area for the crosswalk ID number and the traffic signal ID number stored in the memory 7 is initialized to NULL.
[0022]
Next, the initial setting of the traffic signal will be described with reference to FIG.
[0023]
FIG. 2 is a diagram for explaining the initial setting of the traffic signal.
[0024]
In FIG. 2, there are two pedestrian crossings 20 and 21, traffic signals 10 a and 10 b are provided at both ends of the pedestrian crossing 20, and traffic signals 10 c and 10 d are provided at both ends of the pedestrian crossing 21. To do.
[0025]
The memory 16 of the traffic signal 10a holds “A” indicating the traffic signal 10a as a traffic signal ID number, and “α” indicating the pedestrian crossing 20 as a pedestrian crossing ID number.
[0026]
The memory 16 of the traffic signal 10b holds “B” indicating the traffic signal 10b as the traffic signal ID number and “α” indicating the pedestrian crossing 20 as the pedestrian crossing ID number.
[0027]
The memory 16 of the traffic signal 10c holds “C” indicating the traffic signal 10c as the traffic signal ID number and “β” indicating the pedestrian crossing 21 as the pedestrian crossing ID number.
[0028]
The memory 16 of the traffic signal 10d holds “D” indicating the traffic signal 10d as a traffic signal ID number and “β” indicating the pedestrian crossing 21 as a pedestrian crossing ID number.
[0029]
In addition, each of the traffic signals 10a to 10d is always in a state where the Bluetooth power is turned on.
[0030]
Next, an operation in which the traffic signal device 10 transmits traffic signal information to the mobile phone terminal 1 will be described.
[0031]
FIG. 3 is a diagram showing the flow of operation of the present embodiment.
[0032]
The BT detection unit 13 in the traffic signal device 10 periodically detects the mobile phone terminal 1 within the Bluetooth communication possible range. At this time, the Bluetooth communication can search a plurality of mobile phone terminals 1 and connect to the plurality of mobile phone terminals 1 at the same time.
[0033]
The BT communication unit 12 makes a connection request to the detected BT communication unit 5 of the mobile phone terminal 1.
[0034]
When the BT communication unit 5 that has received the connection request identifies that the connection destination is the traffic signal device 10, the BT communication unit 5 issues an authentication request to the BT communication unit 14 of the traffic signal device 10. In response to the authentication request, the BT communication unit 14 notifies the BT authentication unit 15 of an authentication command.
[0035]
The BT authentication unit 15 transmits a traffic signal authentication key to the BT authentication unit 6 of the mobile phone terminal 1, and the BT authentication unit 6 automatically authenticates using the traffic signal authentication key stored in the memory 4 in advance. I do.
[0036]
After the authentication is completed, the BT authentication unit 6 notifies the connection permission to the BT communication unit 14 of the traffic signal device 10.
[0037]
The BT communication unit 14 that has received the connection permission transmits the “traffic light ID number” and “pedestrian crossing ID number” stored in the memory 16 to the BT communication unit 5 of the mobile phone terminal 1. The BT communication unit 5 transmits the ID number to the control unit 2. Below, the case where the traffic signal 10 is the traffic signal 10a shown in FIG. 2 is demonstrated. Therefore, here, the “traffic light ID number” is “A”, and the “pedestrian crossing ID number” is “α”.
[0038]
The control unit 2 of the mobile phone terminal 1 that has received the pedestrian crossing ID number A compares the “traffic light ID number” and the “pedestrian crossing ID number” stored in the ID number storage area in the memory 4 with the following processing. I do.
[0039]
First, when the received “pedestrian crossing ID number” and the “pedestrian crossing ID number” in the memory 4 are different, it is considered that the user has approached a new pedestrian crossing, and will be described below (A-8) and thereafter. Process.
[0040]
Also, when the received “pedestrian crossing ID number” is the same as the “pedestrian crossing ID number” in the memory 4 and the received “traffic light ID number” is different from the “traffic light ID number” in the memory 4 It is assumed that the user has crossed the pedestrian crossing and is about to finish crossing, and the processing after (B-8) described below is performed.
[0041]
Also, when the received “pedestrian crossing ID number” is the same as the “pedestrian crossing ID number” in the memory 4, and the received “traffic light ID number” is the same as the “traffic light ID number” in the memory 4. Is regarded as “the same traffic signal” that has already received the intention of “do not cross” from the user, and performs the process (C-8) described below.
[0042]
Here, the processing after (A-8) will be described.
[0043]
As described above, this process is a process for a new pedestrian crossing.
[0044]
First, in (A-8), the control unit 2 that has received a “pedestrian crossing ID number” different from the “pedestrian crossing ID number” in the memory 4 receives the “pedestrian crossing ID” received in the ID number storage area in the memory 4. Overwrite the values of “Number” and “Signal ID Number”.
[0045]
Next, in (A-9), the control unit 2 requests signal state information from the BT communication unit 14 of the traffic signal device 10 via the BT communication unit 5.
[0046]
In (A-10), the BT communication unit 14 that has received the request for the signal state information detects the current traffic signal state by the detection unit 12 and transmits the state information to the BT communication unit 5 of the mobile phone terminal 1. .
[0047]
In (A-11), the BT communication unit 5 that has received the state information transmits the information to the control unit 2, and the control unit 2 determines that it is a signal indicating the “passable state” (A-12) and thereafter. Perform the process. If it is determined that the signal indicates “impossible to pass”, the processing after (A-11-1) is performed.
[0048]
Here, an additional process in the case where the vehicle is in a crossing impossible state will be described.
[0049]
If it is determined in (A-11-1) that the signal represents an inoperable state, the user is informed by voice of “impossible to pass” using the audio unit 3 of the mobile phone terminal 1.
[0050]
In (A-11-2), a command to transmit a signal change request to the BT communication unit 5 is issued. The BT communication unit 5 transmits a traffic signal change request to the BT communication unit 14 of the traffic signal device 10, and the BT communication unit 14 notifies the control unit 11 of the request.
[0051]
In (A-11-3), the control unit 11 performs a traffic signal change process.
[0052]
In (A-11-4), when the detection unit 12 of the traffic signal device 10 detects that the traffic signal has been changed to a passable state, the traffic signal device status information is sent to the BT communication unit 5 of the mobile phone terminal 1. Send. The BT communication unit 5 transmits the information to the control unit 2.
[0053]
In (A-12), the BT communication unit 5 of the mobile phone terminal 1 that has received the state information transmits the information to the control unit 2, and if the control unit 2 determines that the signal represents a passable state, the voice unit 3 is used to inform the user of “passability” and “confirmation of crossing intention” by voice.
[0054]
In (A-13), the user who has been notified by voice notifies the user of the intention of “crossing” or “no” by the operation unit 7. The operation unit 7 informs the control unit 2 of the result.
[0055]
In (A-14), the control unit 2 notified of the intention to “cross” instructs the user to cross through the voice unit 3. When the user exceeds the Bluetooth communicable area, the Bluetooth communication is disconnected and waits for a Bluetooth communication connection request again.
[0056]
In (A-15), the control unit 2 notified of the intention of “do not cross” notifies the user that the communication is to be disconnected. Disconnect the Bluetooth communication and wait for the Bluetooth communication connection request again.
[0057]
In (A-16), even during the processing of (A-12) to (A-15) above, the detection unit 12 of the traffic light 10 indicates that the traffic signal has been changed to an inaccessible state. When detected, it notifies the BT communication unit 5 of the mobile phone terminal 1 of an interrupt for changing the state of the traffic signal device. The BT communication unit 5 transmits the information to the control unit 2 and performs the process (A-11-1).
[0058]
Next, processing after (B-8) will be described.
[0059]
In (B-8), the received “pedestrian crossing ID number” and the “pedestrian crossing ID number” in the memory 4 are the same, and the received “traffic light ID number” and the “traffic light ID number” in the memory 4 If they are different, the control unit 2 of the mobile phone terminal 1 considers that the pedestrian crossing has ended, and uses the audio unit 3 to inform the user that the traffic has been completed.
[0060]
Thereafter, in (B-9), the crosswalk ID number / traffic signal ID number storage area in the memory 7 is initialized to NULL, and the Bluetooth communication is disconnected.
[0061]
Next, the process (C-8) will be described.
[0062]
In (C-8), the received “pedestrian crossing ID number” is the same as the “pedestrian crossing ID number” in the memory 4, and the received “traffic light ID number” and the “traffic light ID number” in the memory 4 Are identical, the control unit 2 of the mobile phone terminal 1 regards the traffic signal as having already received the intention of “do not cross” from the user, and does not establish Bluetooth communication.
[0063]
【The invention's effect】
As described above, according to the present invention, a traffic weak person can safely pass through a pedestrian crossing with a traffic signal using a mobile phone terminal equipped with a Bluetooth function capable of communicating with a terminal at a short distance and a traffic signal. A wireless communication system can be provided.
[0064]
The traffic signal searches for a nearby mobile phone terminal and notifies the mobile phone terminal of the presence of the traffic signal. Accordingly, the mobile phone terminal that has received the notification can notify the user of the presence of the traffic signal by voice.
[0065]
The mobile phone terminal can notify the user of the traffic signal status (crossing possible / impossible) by receiving and analyzing the traffic signal status from a traffic signal in the vicinity.
[0066]
If the traffic signal is “red” and traffic is impossible, a request to change to “blue” is transmitted preferentially, and the signal can be changed without pressing the push button.
[0067]
By storing the ID number of the pedestrian crossing and the traffic signal in the mobile phone terminal until the crossing is completed, it is possible to identify the other pedestrian crossing nearby. In addition, it is possible to avoid misleading guidance such as re-notification during crossing.
[0068]
By storing the ID number of the pedestrian crossing and the traffic signal in the mobile phone terminal until the crossing is completed, it is possible to notify the user that the crossing has been completed.
[0069]
When the traffic signal is changed to the state in which the traffic signal cannot be crossed (= red) during guidance, it is possible to immediately inform the user that the signal has been changed by performing an interrupt process.
[0070]
By performing the above communication by Bluetooth communication using low radio waves, it is possible to prevent radio wave interference of a user who owns a medical device.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a wireless communication system according to an embodiment of the present invention.
FIG. 2 is a diagram for explaining an initial setting of a traffic signal.
FIG. 3 is a diagram showing a flow of operation of the present embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cellular phone terminal 2 Control part 3 Audio | voice part 4 Memory 5 BT communication part 6 BT authentication part 7 Operation part 10 Traffic signal apparatus 11 Control part 12 Detection part 13 BT detection part 14 BT communication part 15 BT authentication part 16 Memory 20, 21 Crossing Sidewalk 10a, 10b, 10c, 10d Traffic signal

Claims (1)

A mobile signal terminal having a function of searching for a mobile phone terminal within the communicable range from its own device and transmitting the traffic signal status information, and a mobile phone terminal analyzing the status information and notifying the user of voice. A mobile phone terminal in a wireless communication system having an area for holding a pedestrian crossing ID number for identifying a pedestrian crossing and a traffic signal ID number for identifying a traffic signal, and storing both ID numbers when passing a pedestrian crossing, When both pedestrian crossings are completed, both ID storage areas are cleared. When reconnecting from the same pedestrian crossing ID number and a different traffic signal ID number, the user is notified of the completion of crossing and when connecting from the crosswalk ID number. Is a mobile phone terminal that newly notifies the user of the traffic signal status.

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