JP2020139841A - Position information system and mobile information terminal - Google Patents

Abstract

To provide a position information system capable of suppressing the consumption of a battery of a mobile information terminal that receives map information and accurately ascertaining a position of the mobile information terminal in the system for ascertaining a position of a mobile information terminal.SOLUTION: A position information system includes a position information server 40 capable of transmitting map information for displaying a map image indicating a current position of a mobile information terminal to the mobile information terminal based on the transmitter information transmitted by the mobile information terminal 20. The mobile information terminal used in the position information system includes: radio wave intensity detection means configured to detect radio wave intensity transmitted from a beacon 10 installed in a monitoring area; movement determination means configured to determine whether the mobile information terminal is moving on the basis of the detection information by the radio wave intensity detection means; and transmission period changing means configured to, when it is determined that the mobile information terminal is not moving by the movement determination means, set the period for transmitting identification information by a wireless communication device to a transmission period longer than a period in a case where it is determined that the mobile information terminal is moving.SELECTED DRAWING: Figure 1

Description

The present invention relates to a position information system capable of notifying the position of a mobile information terminal, and in particular, is configured to be able to receive a fire information signal from the fire notification system and can visually notify the position of the mobile information terminal in a facility such as a building. Location information system and mobile information terminal used for it.

Conventionally, there is known a position information system equipped with a transmitter such as a beacon that wirelessly transmits identification information unique to a device as information for position detection.
In a position information system provided with a transmitter as described above, map information in which each identification information of a plurality of transmitters arranged at different positions and each installation location are associated with each other is prepared in advance and given to a mobile information terminal. Be done. Then, when the user of the mobile information terminal holds and moves the mobile information terminal, the mobile information terminal receives the identification information from the transmitters arranged at various places in the building, so that the received identification is received. From the information and the map information, the position in the building can be grasped by displaying the position in the building together with the map on the display unit of the mobile information terminal.

In addition, when the disaster prevention server receives the current location information from the mobile information terminal owned by each employee of the factory at a predetermined cycle and saves the location information of the employee from normal times, a disaster occurs in the factory. , A disaster prevention management system has been proposed in which rescue activities and evacuation orders are given by using the location information of each employee (for example, Patent Document 1).
In addition, an invention has been proposed relating to a support system for acquiring the position of a resident in a facility such as a building by using a position information system equipped with a beacon and supporting evacuation guidance and fire extinguishing activities in the event of a fire. (Patent Document 2). The invention of Patent Document 2 is that the mobile information terminal normally transmits in a long cycle to suppress the consumption of the battery of the mobile information terminal, and when a fire information signal is received, it is transmitted in a cycle shorter than the normal cycle. , The current position of mobile information terminals such as self-defense fire brigade members can be accurately grasped.

Japanese Unexamined Patent Publication No. 2013-196255 JP-A-2017-91477

However, although the invention of Patent Document 2 can suppress the consumption of the battery of the portable information terminal in a normal state, when the fire information signal is received, it is transmitted in a short cycle, so that the portable information terminal owned by the self-defense firefighters If the battery is exhausted, the self-defense firefighters will run out of battery during firefighting, evacuation guidance, and rescue activities, making it impossible to grasp the position. For example, the location information of the person requiring rescue is important. There is a problem that various information may be lost.
The present invention has been made focusing on the above-mentioned problems, and an object of the present invention is to reduce the battery consumption of a mobile information terminal that receives map information in a position information system that grasps the position of the mobile information terminal. The purpose of this is to prevent the mobile information terminal from running out of battery during activities such as fire extinguishing, evacuation guidance, and rescue, and to accurately grasp the position of the mobile information terminal.
Another object of the present invention is that in a system in which a position information system for grasping the position of a mobile information terminal and a fire alarm system are integrated or mixed, one of the mobile information terminals runs out of battery and cannot acquire position information. Even if it is, the purpose is to make it possible to prevent the position of the mobile information terminal from being completely lost.

In order to solve the above problems, the present invention
A portable information terminal having a receiver that receives a signal from a transmitter installed in a predetermined area, a transmitter information including identification information of the transmitter, and a wireless communication device capable of transmitting its own identification information.
A server capable of transmitting map information to the mobile information terminal for displaying a map image showing the current position of the mobile information terminal on the mobile information terminal based on the transmitter information transmitted by the mobile information terminal. When,
In a mobile information terminal used for a location information system equipped with
A movement determination means for determining whether the mobile information terminal is moving, and
The period for transmitting identification information by the wireless communication device when it is determined that the movement is not moving by the movement determination means, and the identification information is transmitted by the wireless communication device when it is determined that the movement is moving by the movement determination means. It is provided with a transmission cycle changing means for setting a second cycle longer than the first cycle.

According to the mobile information terminal having the above configuration, when it is determined that the mobile information terminal, that is, the owner is not moving, it is determined that the cycle of transmitting the identification information by the wireless communication device is moving. Since it is set to a cycle longer than the transmission cycle in the case of, it is possible to suppress the consumption of the battery of the mobile information terminal, and while avoiding the mobile information terminal from running out of battery during fire extinguishing or evacuation guidance activities, The server that receives the transmitted identification information can avoid losing the position of the mobile information terminal.
Here, the mobile information terminal includes a radio wave intensity detecting means for detecting the radio wave intensity transmitted from the transmitter, and the movement determining means determines whether or not the moving is moving based on the detection information by the radio wave intensity detecting means. It is conceivable to configure it to do so.

Further, preferably, a battery remaining amount calculating means for calculating the remaining battery level based on the information of the battery voltage detecting means for detecting the battery voltage is provided.
When the remaining battery level calculated by the remaining battery level calculation means falls below a predetermined level, the transmission cycle changing means moves the cycle of transmitting identification information by the wireless communication device by the movement determination means. It is configured to be set to the third cycle, which is longer than the second cycle when it is determined that the case is not performed.
According to this configuration, when the remaining battery level falls below a predetermined level, the transmission cycle is set to be longer than the transmission cycle when it is determined that the holder is not moving, so that the mobile information is further enhanced. It is possible to suppress the consumption of the battery of the terminal and prevent the position of the mobile information terminal from being completely lost.

Further, preferably, when the transmission cycle changing means receives information notifying the occurrence of an abnormality from the server by the wireless communication device, the transmission cycle changing means transmits the identification information in the first cycle and the second cycle, respectively. It is configured to be set to a shorter cycle.
According to this configuration, when information notifying the occurrence of an abnormality (fire) is received, the transmission cycle is set to a shorter cycle, so that the position of the mobile information terminal can be accurately grasped in the event of an abnormality and the fire is extinguished. And can effectively support evacuation guidance activities.

Another invention according to the present application is a mobile information terminal having the above configuration and a map image showing the current position of the mobile information terminal based on the transmitter information transmitted by the mobile information terminal. In a location information system including a server capable of transmitting map information to be displayed on the mobile information terminal to the mobile information terminal.
The server determines the current position of the mobile information terminal that has transmitted the information based on the transmitter information and the identification information of the mobile information terminal, and obtains a map image showing the current position of the mobile information terminal. It is configured so that map information for display on a mobile information terminal can be created and transmitted.

According to the location information system having the above configuration, the server determines the current position of the mobile information terminal that has transmitted the information, and transmits a map image showing the current position of the mobile information terminal. The owner of the mobile information terminal can grasp his / her position while avoiding the battery running out of the mobile information terminal during activities such as fire extinguishing, evacuation guidance, and rescue.

Here, preferably, the location of the fire is determined based on the fire information including the location information of the fire transmitted by the receiver capable of receiving the fire detection signal from the fire detector installed in the predetermined area. Equipped with a fire monitoring device
Based on the fire information including the fire occurrence position information transmitted from the fire monitoring device, the server displays a map image showing the current position of the mobile information terminal and the fire occurrence position on the mobile information terminal. Create map information to be displayed on the display unit of and configure it so that it can be sent.
According to this configuration, the server transmits a map image showing the current position of the mobile information terminal and the location of the fire, so that the owner of the mobile information terminal takes appropriate actions for fire extinguishing activities and evacuation guidance. It becomes possible.

Further, preferably, when the reception of the information from the mobile information terminal that has transmitted the transmitter information is interrupted for the predetermined time or more, the server finally grasps the position information of the mobile information terminal. Based on the above, the position information on the map image finally grasped is transmitted together with the information indicating that the personal digital assistant has lost the position information.
According to such a configuration, even if one of the mobile information terminals loses the position information due to the battery running out, it is possible to prevent the position of the mobile information terminal from being completely lost.

Further, preferably, it is provided with a management device that acquires a map image showing the current position of the mobile information terminal and the position where a fire has occurred in the predetermined area from the server and displays it on the display unit.
The management device displays the current position of the mobile information terminal with a predetermined mark on the display unit of the management device, and indicates that the management device is a mobile information terminal whose position information has been lost in the information of the mobile information terminal acquired from the server. When information is included, the mark representing the mobile information terminal is different from the mark representing the mobile information terminal before the loss of position information, and the mobile information terminal on the map based on the map information. The map image in which the last grasped position is displayed can be displayed on the display unit.

According to the location information system having the above configuration, the position immediately before the location information of the mobile information terminal whose location information has been lost and the mark which can identify the mobile information terminal whose location information has been lost are marked. Since it is displayed on the map displayed on the display unit of the management device, the manager or the supervisor can make an appropriate judgment and give an appropriate command to the member who owns the mobile information terminal.

Further, preferably, when the reception of the information from the mobile information terminal that has transmitted the transmitter information is interrupted for the predetermined time or more, the server has the mobile information terminal information and the mobile information terminal. A list containing one or more information among the owner name and the position information grasped at the end of the mobile information terminal is created and the information of the list is transmitted to the management device, and the management device receives the information. It is configured to display the information of the list.
According to such a configuration, it is possible to improve the efficiency of the safety confirmation work by creating a list of mobile information terminals whose location information is interrupted and their owners when an abnormality occurs. As a result, the owner of the mobile information terminal whose position has not disappeared uses the location information, and the owner of the mobile information terminal whose position has disappeared confirms the roll call, etc. based on the created list. By doing this, you can confirm your safety. In addition, if it is not listed, it is necessary to grasp from the map image which mobile information terminal has lost its position, and if there are multiple floors, it will take time to confirm, but it will be displayed in a list. Therefore, it is possible to easily grasp which mobile information terminal has lost the location information just by looking at the list.
The mobile information terminal information may be any information that can be distinguished from other mobile information terminals, such as identification information unique to the mobile information terminal.

According to the present invention, in a position information system that grasps the position of a mobile information terminal, it is possible to suppress the consumption of the battery of the mobile information terminal that receives the map information, and the mobile information terminal is carried during activities such as fire extinguishing, evacuation guidance, and rescue. It is possible to accurately grasp the position of the mobile information terminal while avoiding the information terminal running out of battery. In addition, in a system that integrates a position information system that grasps the position of a mobile information terminal and a fire notification system, even if one of the mobile information terminals runs out of battery and the position information cannot be acquired, the position of the mobile information terminal can be determined. It has the effect of avoiding complete disappearance.

It is a block diagram which shows an example of the system which integrated the position information system and the fire alarm system of embodiment. It is a block diagram which shows the configuration example of the mobile information terminal used for the position information system of embodiment. It is a graph which shows the relationship between the remaining battery level of a mobile information terminal and a transmission cycle. It is a flowchart which shows an example of the position information transmission processing procedure in the mobile information terminal used in the position information system of embodiment. It is a flowchart which shows an example of the map creation processing procedure in the location information server which configures the location information system of embodiment. It is a figure which shows an example of the map image (floor map image) of the monitoring area displayed on a mobile information terminal.

Hereinafter, embodiments of a position information system to which the present invention is applied will be described with reference to the drawings. FIG. 1 is a block diagram showing an example of a schematic configuration of the position information system of the present embodiment.
As shown in FIG. 1, the position information system of the present embodiment includes a mobile information terminal 20 capable of receiving signals (radio waves) from beacons (transmitters) 10 arranged at a plurality of locations inside the building, and a portable information system. A location information server 40 that performs data communication with a mobile information terminal 20 via a telephone base station 30 and a communication network N such as the Internet, a management device 42 composed of a data processing device such as a personal computer or a tablet PC, and a building. A fire receiver 60 capable of receiving fire detection signals from fire detectors 50 arranged at a plurality of locations inside, and a fire receiver 60 via a gateway (repeater) 70 and a communication network N such as the Internet. It is composed of a data transfer device 80 and the like that perform data communication between the two and acquire information on the occurrence of a fire from the fire receiver 60 and transfer it to the management device 42.

The data transfer device 80 displays a correspondence table between the fire detector (ID or address) installed in the monitoring area and the installation position, fire occurrence location information and fire occurrence time information acquired from the fire receiver 60. It may be a server (fire information server) having a function of storing the fire information history including the fire information.
Further, as a communication method of the beacon 10 for transmitting a wireless signal (unique information such as device ID and equipment information) to the mobile information terminal 20, for example, Bluetooth (registered trademark) communication or a wireless LAN such as WiFi in accordance with the IEEE 802.11 standard. , Infrared communication, visible light communication and other known communication methods can be used. The interval at which the beacons 10 are arranged is not particularly limited, but in the following description, it is assumed that the communication ranges of the adjacent beacons 10 are arranged so as to cover the space in the building.

Specifically, since fire detectors 50 and sprinkler heads are originally installed in the building at predetermined intervals, beacons installed in or added to those devices, or in the vicinity of those devices. Beacons attached in the form of being installed in can be used.
In addition, the beacon 10 includes a transmitting unit that periodically transmits information about the power source (built-in battery information or external power source information) and its own identification information on a wireless signal to the surroundings. The signal (beacon signal) transmitted by the beacon 10 wirelessly may include at least the identification information of the beacon 10 (device ID of the transmitter), and further includes information about the area where the beacon 10 is installed. Is also good.

The personal digital assistant 20 has a data processing function including, for example, a CPU (Central Processing Unit), a non-volatile memory containing a program executed by the CPU, a work RAM (Random Access Memory), and a signal from the beacon 10. It is a device having a receiving function for receiving and a wireless communication function, and a known smartphone or the like can be used.
The internal memory of the mobile information terminal 20 periodically receives a beacon signal transmitted wirelessly from the beacon 10 to extract identification information (device ID) and the like included in the beacon signal, and receives the beacon signal. The process of detecting the radio wave strength and transmitting the beacon information including the identification information and the received radio wave strength to the location information server 40 via the mobile phone base station 30 and the communication network N, and the communication network N and the mobile phone base station 30. An application program (location information display application) that executes a process of displaying a floor diagram image based on the floor diagram information transmitted from the location information server 40 on the screen is stored.

Further, when the mobile information terminal 20 receives beacon signals transmitted from a plurality of beacons 10 (beacons 10 having overlapping communication ranges), the mobile information terminal 20 is configured to transmit each beacon information to the position information server 40. You may be.
The fire detector 50 is connected to the fire receiver 60 via a different detector line 51 for each warning area, and when it detects the generation of heat, smoke, flame, harmful gas, etc., the fire detector 50 is connected via the detector line 51. A fire detection signal is transmitted to the fire receiver 60. The fire detector 50 may be a type of detector that adds its own installation address to the fire detection signal, or may be a type of detector that does not add its own installation address.

When the fire receiver (R type or P type) 60 receives a fire detection signal from the fire detector 50, it displays a fire alarm on the display unit and controls interlocking control such as ringing of the district bell and smoke prevention device. Do. Further, the fire receiver 60 collects fire information (abnormal information) including fire occurrence location information, fire occurrence time information, and recovery information when a recovery operation is performed on the fire receiver 60 via the gateway 70. The data is transmitted to the transfer device 80, and the data transfer device 80 transmits the received information to the location information server 40.
When the installation address of the fire detector 50 is added to the fire detection signal, the fire receiver 60 identifies the location of the fire based on the installation address. On the other hand, when the installation address of the fire detector 50 is not added to the fire detection signal, the location (warning area) where the fire occurs is specified based on the detector line 51 that transmitted the fire detection signal.

The location information server 40 includes map information (floor map) of each floor of the building managed by the location information server 40, identification information (terminal ID) unique to the mobile information terminal, and authority and qualification of the holder of the mobile information terminal. It is provided with a database 41 that stores information related to attributes such as (holder attribute information). The map information (floor map information) of each floor includes the device ID and installation position information of the beacon 10 installed on each floor.

When the location information server 40 receives the device ID of the beacon 10 from the mobile information terminal 20, it calculates the current position of the mobile information terminal 20 based on the device ID of the received beacon and the information stored in the database 41. Then, a process of reading the map information of the floor on which the mobile information terminal 20 is located from the database 41, adding the current position information of the mobile information terminal 20 to the read floor map data, and transmitting the data to the mobile information terminal 20. Execute. Alternatively, the location information server 40 plots a mark indicating the current position of the mobile information terminal 20 on the floor map to generate floor display information, and the generated floor display information is transmitted via the communication network N and the mobile phone base station 30. The process of transmitting to the mobile information terminal 20 is executed.
As a result, a floor map image showing the current position of the mobile information terminal 20 can be displayed on the display unit of the mobile information terminal 20 that has received the information. When a plurality of mobile information terminals 20 are present in the monitoring area (floor diagram), a plurality of marks indicating the current positions of the plurality of mobile information terminals may be displayed on the floor diagram.

Further, the location information server 40 determines the attribute or type of the holder based on the device ID and the terminal ID of the transmitter sent from the mobile information terminal 20, and refers to the display range designation table of the holder. Information on equipment to be displayed may be read out according to an attribute or type, and display data of the mobile information terminal may be generated and transmitted.
The management device 42 displays the floor map and the like created by the location information server 40 on the display unit of the management device 42, reads out the owner information of the mobile information terminal displayed on the floor map, and the owner is a self-defense firefighter. If it has a predetermined role, it is configured to be able to send commands necessary for firefighting activities, evacuation guidance, rescue activities, etc. When the management device 42 is portable, it may have the same function as that of the mobile information terminal 20.

FIG. 2 shows a configuration example of the mobile information terminal 20. As shown in FIG. 2, the mobile information terminal 20 has a beacon receiver 21 capable of receiving radio waves from the beacon 10, a wireless communication device 22 for communicating with a position information server 40 via a network N, and a CPU (center). A data processing unit 23 including a processing unit), a storage device 24 for storing application programs, a touch panel display 25 having an input unit and a display unit, a battery 26 for supplying a power supply voltage, and a clock generator for generating a clock signal. It is equipped with 27 and the like.

Further, the data processing unit 23 extracts information such as the device ID of the beacon from the signal received by the radio wave intensity detecting unit 31 and the beacon receiver 21 that detects the radio wave intensity based on the signal received by the beacon receiver 21, and owns the device. Transmission processing unit 32 that periodically transmits to the position information server 40 together with the ID of the above, map display processing unit 33 that displays a map such as a floor map received from the position information server 40 by the radio communication device 22 on the display unit, and battery 26. Based on the radio wave intensity information detected by the battery information acquisition unit 34 and the radio wave intensity detection unit 31 that calculate the remaining battery level based on the voltage and the like, it is determined whether or not the own mobile information terminal is moving and the movement speed is determined. A transmission cycle changing unit 36 that changes the transmission cycle by the transmission processing unit 32 based on the remaining battery level calculated by the movement determination unit 35 and the battery information acquisition unit 34 and the determination result of the movement determination unit 35. I have.

When the beacon 10 is arranged so that the radio wave transmission range overlaps with the radio wave transmission range of the adjacent beacon 10, the beacon receiver 21 receives radio waves from a plurality of beacons, but among the plurality of beacon radio waves. It can be determined that the mobile information terminal exists in the vicinity of the beacon installation position having the highest radio wave strength. Then, the movement determination unit 35 can determine whether the mobile information terminal is moving from the changes in the intensities of the plurality of beacon radio waves. When the mobile information terminal has an acceleration sensor, the movement determination unit 35 may determine whether or not the mobile information terminal is moving or calculate the movement speed (including 0) based on the information from the acceleration sensor. good.

Here, a method of changing the transmission cycle by the transmission cycle changing unit 36 of the mobile information terminal 20 will be described with reference to the graph shown in FIG.
As shown in FIG. 3A, for example, the transmission cycle changing unit 36 shortens the transmission cycle when the remaining amount is large according to the remaining battery level (for example, when the remaining amount is 15% or 25% or more), while the remaining amount is remaining. When the amount is small (for example, when it is less than 15% or 25%), the transmission cycle is lengthened. Further, based on the determination result of the movement determination unit 35, the transmission cycle changing unit 36 shortens the transmission cycle while the own mobile information terminal is moving, as shown by the solid line A in FIG. 3 (A). When the personal digital assistant is not moving (stopped), the transmission cycle is lengthened as shown by the broken line B in FIG. 3 (A).

Instead of changing the transmission cycle depending on whether or not the server is moving, the transmission cycle may be changed depending on whether or not abnormal information (for example, fire information) is received from the position information server 40. Further, although the criterion for determining the remaining battery level is illustrated as 15% to 25%, the criterion is not limited to 15% to 25%. That is, a value such as 15% at which a general mobile information terminal notifies that the battery is low, or the like, is sufficient as long as the general mobile information terminal determines that the battery level is low.
Further, when the remaining battery level of the personal digital assistant 20 drops to a predetermined remaining battery level larger than the above-mentioned determination standard, it is displayed that the remaining battery level is low or the position information transmission cycle becomes longer. You may notify the change of the cycle in advance by displaying that there is a risk. Further, when the transmission cycle is automatically lengthened when the battery level is less than a predetermined value, the transmission cycle may be set short by the operation of the owner of the mobile information terminal 20.

As described above, the mobile information terminal 20 can slow down the battery consumption rate and extend the time until the battery runs out by lengthening the transmission cycle when the battery level is low as compared with when the battery level is high. .. In addition, when the own mobile information terminal is moving, the transmission cycle is shortened to increase the frequency of transmitting the position information to the position information server 40 and accurately reflect the position of the owner of the mobile information terminal on the map. Can be displayed.
The transmission cycle is not limited to the method of switching to three stages (moving time cycle, stopping time cycle, save time cycle) as shown in FIG. 3 (A), and more as shown in FIG. 3 (B). You may switch to the stage of. For example, it is conceivable to switch the transmission cycle in multiple stages according to the moving speed, or to switch to stages according to the condition of whether or not the vehicle is moving and the condition of whether or not abnormal information is received.

Next, the processing procedure by the mobile information terminal 20 and the location information server 40 constituting the location information system of the present embodiment will be described with reference to the flowcharts shown in FIGS. 4 and 5. When the mobile information terminal 20 is a general-purpose device such as a smartphone, a location information display application created to operate according to the present embodiment is stored in the storage device 24, and the application is activated. And. Further, the position information transmission process according to the flowchart shown in FIG. 4 is not particularly limited, but is executed by, for example, a timer interrupt. Then, this interrupt is generated according to the transmission cycle set in the previous position information transmission process.

When the timer interrupt occurs and the position information transmission process is started, the data processing unit 23 first receives the signal transmitted from the beacon receiver 21 (step S1), and acquires the radio wave strength of the received signal (step S1). Step S2). Then, information such as the device ID of the beacon included in the reception signal having the highest reception strength is extracted, and the beacon ID and the reception strength are transmitted to the position information server 40 together with the own mobile information terminal ID (step S3). .. When the signals of the plurality of beacon receivers 21 are received, the IDs and reception strengths of the plurality of beacons and the mobile information terminal ID may be transmitted. The mobile information terminal ID (mobile information terminal information) may be any information that can be distinguished from other mobile information terminals, such as identification information unique to the mobile information terminal.

Next, the data processing unit 23 of the mobile information terminal 20 reads the voltage of the battery 26 (step S4) and calculates the remaining battery level based on the battery voltage (step S5). Then, it is determined whether or not the remaining battery level is below the predetermined level (for example, 25%) (step S6), and when it is determined that the remaining battery level is below the predetermined level (step S6; Yes), the transmission cycle is set. The longest save time cycle among the three stages is set (step S7), and the process proceeds to step S13. If it is determined that the remaining battery level is not below the predetermined level (step S6; No), the process proceeds to step S8.

In step S8, it is determined whether or not the beacon having the highest reception strength is the same as the beacon having the highest reception strength at the time of the previous transmission. Then, when it is determined that the beacon is not the same as the previous time (step S8; No), the mobile information terminal 20 is regarded as moving, and the transmission cycle is set to the shortest moving time cycle among the three stages (step S8; No). Step S9).
On the other hand, if it is determined in step S8 that the beacon is the same as the previous time (Yes), it is considered that the mobile information terminal 20 is not moving, and the transmission cycle is set to the stop time cycle, which is the middle of the three stages. Set (step S10).

Subsequently, it is determined whether or not the abnormality occurrence information has been received from the location information server 40 (step S11), and if it is determined that the abnormality occurrence information has been received (Yes), the process proceeds to step S12 and steps S9 or S10. Set the transmission cycle set in step to a shorter cycle. This is so that when an abnormality occurs, the location information server 40 can acquire the location information from the mobile information terminal 20 more frequently and accurately grasp the current position of each terminal.
If it is determined in step S11 that the abnormality occurrence information has not been received (No), step S12 is skipped and the process proceeds to step S13. In step S13, the transmission cycle timer that measures the transmission cycle is reset, and the time measurement of the next transmission cycle set in steps S7 or S9, S10, and S12 is started to shift to the stopped state (sleep).

In step S6, it is determined that the remaining battery level is equal to or lower than a predetermined level, and in step S7, the transmission cycle is set to the longest save time cycle among the three stages, and then the process proceeds to step S12 to move to step S7. There is also the idea of shortening the transmission cycle set in, but if you do so, you can accurately grasp the current position of the terminal, but the battery consumption speed will be faster, and the risk of running out of battery during an abnormality will increase. There are disadvantages.
Therefore, in the present embodiment, when the battery level is low, the transmission cycle is not set to a shorter cycle even if the abnormality occurrence information is received. This makes it possible to avoid the risk of losing the location information of the rescue-requiring person, for example, when the owner of the mobile information terminal is the rescue-requiring person.

FIG. 5 shows an example of the procedure of the map creation process by the location information server 40. This process can be started, for example, when data is received from any mobile information terminal managed by the user.
When the map creation process is started, the location information server 40 first extracts the ID and beacon ID of the mobile information terminal from the received data (step S21), and identifies the position of the mobile information terminal based on the beacon ID (step S21). Step S22). Specifically, since a table showing the relationship between the beacon ID and its set position is stored in the database 41, the position of the mobile information terminal is specified by referring to the table.

Next, the data of the floor map of the monitored area is read from the database 41 (step S23). Subsequently, the location information server 40 acquires information on the presence or absence of a fire and the location of the fire from the fire receiver 60 (step S24), and determines whether or not a fire has occurred (step S25).
Here, if it is determined that a fire has occurred (step S25; Yes), the location information server 40 proceeds to step S26 and displays a mark indicating the fire occurrence position on the floor diagram read in step S23. Alternatively, fire position information may be added to the floor map data. On the other hand, if it is determined in step S25 that no fire has occurred (No), step S26 is skipped and the process proceeds to step S27.

In step S27, a mark indicating the position of the mobile information terminal specified in step S22 is indicated on the floor diagram. At this time, when a plurality of mobile information terminals are present in the monitoring area, a mark indicating the position of the other mobile information terminal may also be displayed on the floor map. Subsequently, it is determined whether or not there is a mobile information terminal that has become unable to communicate (step S28). Here, the inability to communicate means that the server cannot grasp the position of the mobile information terminal, and examples thereof include a communication failure such as an inability to communicate between the server and the mobile information terminal. The time for determining whether or not communication is impossible is longer than the transmission cycle set when the battery level is determined to be equal to or lower than the predetermined level. This is to avoid erroneously determining a mobile information terminal whose battery level is low as a non-communication terminal.

If it is determined in step S28 that there is a mobile information terminal that has become unreachable (Yes), the process proceeds to step S29, and a mark on the floor diagram indicating the position where the mobile information terminal that has become unreachable immediately existed. Change the display form of. For example, it is conceivable to change the mark displayed as a solid line to a dotted line display, or change the mark displayed in blue to a red display. Further, the location information server 40 is a list describing the location information of the mobile information terminal that was finally grasped when the reception of information from the mobile information terminal that has transmitted the transmitter information is interrupted for a predetermined time or more. May be created and the information of the list is transmitted to the management device 42, and the management device 42 may display the information of the received list.
On the other hand, if it is determined in step S28 that there is no mobile information terminal whose communication has become impossible (No), the process proceeds to step S30, and the floor diagram (see FIG. 6) created in steps S21 to S29 is displayed on the mobile information terminal 20 and the management device. It is transmitted to 42 to end a series of processing.

In the flowchart of FIG. 5, a mark indicating the position where the fire occurred and a mark indicating the position of the mobile information terminal are shown on the floor diagram are transmitted to the mobile information terminal, but the data of the floor diagram is transmitted to the mobile information terminal. It may be transmitted and a mark indicating one's own position may be displayed on the floor map on the mobile information terminal side. Further, the position information of the other mobile information terminal may be transmitted together with the floor map data so that the position of the other mobile information terminal can be displayed on the floor map.
Further, when the location information server 40 receives the recovery information from the fire receiver 60 in step S24, the location information server 40 notifies the mobile information terminal of the recovery and stops displaying the fire mark on the floor diagram. You may. Further, here, the restoration notification to the mobile information terminal, the display of the fire mark, or the cancellation of the addition of the fire position information can be executed by a command operation from the input unit in the management device 42.

If there is a mobile information terminal that has become unreachable, the floor map may display the time when the unreachable state or the elapsed time from the time when the unreachable state is lost. Further, the mobile information terminal 20 transmits information indicating the remaining battery level to the position information server 40, and the position information server 40 displays a mark indicating the position of the mobile information terminal in a display color or display form according to the remaining battery level. You may let it. For example, a mobile information terminal with a high battery level may be indicated by a green circle, and a mobile information terminal with a low battery level may be indicated by a red circle.

FIG. 6 shows an example of a floor diagram displayed on the display unit of the management device 42. In FIG. 6, the symbol D is attached to the fire detector mark, the reference numeral B is attached to the beacon mark, the reference numeral S is attached to the mobile information terminal mark, and the reference numeral F is attached. What is attached is a mark indicating the position where the abnormality (flame) occurs. Further, the mark represented by the dotted line and having the reference numeral S'indicates the position grasped immediately before the mobile information terminal whose communication is interrupted due to the dead battery or the like. The position of the mobile information terminal whose communication has been interrupted may be displayed only when an abnormality occurs, for example. By displaying the position immediately before the mobile information terminal where communication was interrupted when an abnormality occurred, the rescuer relies on the position where communication was interrupted, for example, when the owner of the mobile information terminal was a person requiring rescue. It becomes possible to carry out rescue activities.

As described above, according to the position information system of the present embodiment, the transmission cycle is lengthened when the owner of the mobile terminal is not moving or the battery level is low, so that the mobile terminal is portable. It is possible to reduce the consumption of the battery of the information terminal. In addition, when the owner of the mobile terminal is moving, the transmission cycle is shortened on condition that the battery level is high, so the mobile information terminal can be used during fire extinguishing, evacuation guidance, and rescue activities. It is possible to accurately grasp the position of the mobile information terminal while avoiding running out of batteries. Furthermore, in a system that integrates a location information system that grasps the position of a mobile information terminal and a fire alarm system, the position that was grasped immediately before the mobile information terminal whose communication is interrupted is displayed. Even if the mobile information terminal of the mobile information terminal runs out of battery and the position information cannot be acquired, it is possible to prevent the position of the mobile information terminal from being completely lost.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the above-described embodiments and can be appropriately modified without departing from the gist thereof. For example, the location information server 40 and the data transfer device 80 may be integrally configured as a support server or the like instead of being separate. Further, in the above embodiment, the management device 42 is provided separately from the mobile information terminal 20, but when the management device 42 is a portable device such as a tablet PC, the function of the mobile information terminal 20 of the embodiment is used. Both the functions of the management device 42 may be mounted on one device.

Further, in the above embodiment, it has been described that the beacon has only a function of transmitting information, but a function of receiving a wireless signal from a mobile information terminal or another transmitter (wireless tag, terminal, etc.) and further receiving. It may have a function of transmitting the collected information to the server.
Further, in the above embodiment, a system using beacon positioning is exemplified as the position information system, but the position information system is not limited to this, and the position information system uses positioning by other methods such as IMES (Indoor Messaging System). It may be a system that has been used.

10 Beacon (transmitter)
20 Mobile information terminal 40 Location information server (server device)
41 Database (transmitter installation location information storage means)
42 Management device 60 Fire receiver (receiver)
80 data transfer device

Claims (9)

A portable information terminal having a receiver that receives a signal from a transmitter installed in a predetermined area, a transmitter information including identification information of the transmitter, and a wireless communication device capable of transmitting its own identification information.
A server capable of transmitting map information to the mobile information terminal for displaying a map image showing the current position of the mobile information terminal on the mobile information terminal based on the transmitter information transmitted by the mobile information terminal. When,
It is a mobile information terminal used for a location information system equipped with
A movement determination means for determining whether the mobile information terminal is moving, and
The period for transmitting identification information by the wireless communication device when it is determined that the movement is not moving by the movement determination means, and the identification information is transmitted by the wireless communication device when it is determined that the movement is moving by the movement determination means. A portable information terminal provided with a transmission cycle changing means for setting a second cycle longer than the first cycle. A radio wave strength detecting means for detecting the radio field strength transmitted from the transmitter is provided.
The mobile information terminal according to claim 1, wherein the movement determining means determines whether or not the movement is based on detection information by the radio wave intensity detecting means. It is equipped with a battery level calculation means that calculates the remaining battery level based on the information of the battery voltage detection means that detects the battery voltage.
When the remaining battery level calculated by the remaining battery level calculating means falls below a predetermined level, the transmission cycle changing means moves the cycle of transmitting identification information by the wireless communication device by the movement determining means. The mobile information terminal according to claim 1 or 2, wherein the third cycle is set to be longer than the second cycle when it is determined that the case is not performed. When the wireless communication device receives information notifying the occurrence of an abnormality from the server, the transmission cycle changing means sets the first cycle and the second cycle of transmitting the identification information to shorter cycles, respectively. The mobile information terminal according to any one of claims 1 to 3, wherein the mobile information terminal is characterized by the above. Based on the mobile information terminal according to any one of claims 1 to 4 and the transmitter information transmitted by the mobile information terminal, a map image showing the current position of the mobile information terminal is sent to the mobile information terminal. A location information system including a server capable of transmitting map information to be displayed to the mobile information terminal.
The server determines the current position of the mobile information terminal that has transmitted the information based on the transmitter information and the identification information of the mobile information terminal, and obtains a map image showing the current position of the mobile information terminal. A location information system characterized in that map information for display on a personal digital assistant can be created and transmitted. Equipped with a fire monitoring device that determines the location of the fire based on the fire information including the location information of the fire transmitted by the receiver that can receive the fire detection signal from the fire detector installed in the predetermined area. ,
Based on the fire information including the fire occurrence position information transmitted from the fire monitoring device, the server displays a map image showing the current position of the mobile information terminal and the fire occurrence position on the mobile information terminal. The position information system according to claim 5, wherein map information for displaying on the display unit of the above is created and can be transmitted. When the reception of information from the mobile information terminal that has transmitted the transmitter information is interrupted for the predetermined time or longer, the server is said to be based on the position information of the mobile information terminal that was finally grasped. The position information system according to claim 6, wherein the position information on the map image finally grasped is transmitted together with information indicating that the position information is a lost mobile information terminal. A management device provided with a management device that acquires a map image showing the current position of the mobile information terminal and the position where a fire has occurred in the predetermined area from the server and displays it on the display unit.
The management device displays the current position of the mobile information terminal with a predetermined mark on the display unit of the management device, and indicates that the management device is a mobile information terminal whose position information has been lost in the information of the mobile information terminal acquired from the server. When information is included, the mark representing the mobile information terminal is different from the mark representing the mobile information terminal before the location information disappears, and the mobile information terminal on the map based on the map information. The position information system according to claim 7, wherein a map image in which the map image is shown at the last grasped position can be displayed on the display unit. When the reception of information from the mobile information terminal that has transmitted the transmitter information is interrupted for the predetermined time or longer, the server determines the mobile information terminal information, the owner name of the mobile information terminal, and the like. Among the position information grasped at the end of the mobile information terminal, a list describing one or more pieces of information is created, and the information of the list is transmitted to the management device.
The location information system according to any one of claims 5 to 8, wherein the management device displays information in a received list.

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