JP2017215730A - Separation alarm device according to congestion state - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an alarm device that switches the distance at which an alarm is issued according to a congestion state and issues an appropriate alarm.SOLUTION: A main control part 101, when notified of the current crowd density from a crowd density analysis determination part 102, stores the crowd density, when notified of the field intensity from a field intensity measuring part 103, refers to a field intensity stored in a field intensity storage part 105 corresponding to the crowd density on the basis of the stored crowd density, and when the notified field intensity is smaller than the field intensity referred to, instructs an alarm display part 106 to display an alarm for a certain period.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a separation alarm device that alarms when a specific object (or person) leaves a certain distance from its own device, and particularly relates to an alarm method according to a congestion situation such as crowdedness.

  When going out, there are cases where children get lost from their parents and get lost. As a technique for solving this problem, Patent Document 1 describes a remote alarm device in which a mobile phone senses a radio wave transmitted by a slave unit and displays an alarm when the slave unit leaves a certain distance. It is possible to prevent lost children by carrying the child device to the child and carrying the mobile phone by the parent of the child.

JP 2000-287265 A

  However, the technique of Patent Document 1 does not consider that the distance to be alarmed changes depending on the destination. For example, in a place with a good view such as a park, it is difficult for a child to get lost even if the child leaves the parent to some extent. On the other hand, it is easy to get lost in crowded places such as department stores and amusement parks.

  The present invention has been made in view of the above problems, and its task is to provide a remote alarm device that identifies surrounding congestion situations such as stations and event venues and automatically displays appropriate alarms. is there.

  In order to solve the above-mentioned problem, the present invention is a remote alarm device that notifies an alarm according to the reception intensity of a beacon signal received from a specific beacon transmitter, and is a voice signal input from a microphone included in the own device or A crowd density analysis means for analyzing a crowd density in the vicinity of the device by performing predetermined signal processing on an image signal input from a camera included in the device or an acceleration signal input from an acceleration sensor included in the device; Threshold storage means for previously storing a plurality of threshold values related to the reception intensity to be alarmed, and when the crowd density analyzed by the crowd density analysis means has a variation of a predetermined value or more, the threshold value Referring to the storage means, the threshold value of the reception strength corresponding to the fluctuating crowd density is specified, and the reception strength of the received beacon signal is less than or equal to the threshold value Once, and notifies the alarm to the effect that the distance of the source and the device itself the received beacon signal are separated.

  According to the present invention, the separation alarm device measures the crowd density, and when the measured crowd density varies, the separation alarm device refers to the radio wave intensity associated in advance for each crowd density and separates the radio wave intensity. Set to alarm signal strength. Then, when the reception intensity of the beacon signal received from the beacon transmitter becomes equal to or less than the set alarm radio wave intensity, an alarm indicating that the distance between the beacon transmitter and the own device is separated is displayed. Thereby, the user of the away alarm device can automatically switch the alarm display distance according to the congestion situation, and can prevent lost children in the crowd.

FIG. 1 is an overall configuration diagram and functional block diagram of the present invention. FIG. 2 is an operation flowchart of the mobile terminal. FIG. 3 is a diagram schematically showing a radio wave intensity management table stored in the radio wave intensity storage unit of the mobile terminal.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an overall configuration diagram and functional block diagram of the present invention. As shown in the figure, in this system, the beacon signal transmitted at regular intervals is transmitted to the slave unit 2 and the radio wave intensity of the beacon signal received from the slave unit 2 is a predetermined value (hereinafter referred to as alarm radio wave intensity). The mobile terminal 1 displays an alarm in the following cases.

  The mobile terminal 1 includes a main control unit 101, a crowd density analysis determination unit 102, a radio wave intensity measurement unit 103, a beacon signal reception unit 104, a radio wave intensity storage unit 105, an alarm display unit 106, a microphone 107, It is comprised from the acceleration sensor 109 and the input part 110, for example, is a smart phone.

  The main control unit 101 is connected to a crowd density analysis determination unit 102, a radio wave intensity measurement unit 103, a radio wave intensity storage unit 105, an alarm display unit 106, and an input unit 110, and processes related to the terminal of the mobile terminal 1 Control overall. Further, when the crowd density described later is passed from the crowd density analysis determination unit 102, the main control unit 101 refers to the radio wave intensity corresponding to the crowd density from the radio wave intensity analysis unit 103, and uses the referenced radio wave intensity as the alarm radio wave intensity. Set to. Further, when the radio field intensity is passed from the radio field intensity measuring unit 103, the main control unit 101 compares the alarm radio field intensity with the passed radio field intensity. The unit 106 is instructed to display an alarm.

  The crowd density analysis determination unit 102 extracts a voice signal from the microphone 107 at every predetermined timing (hereinafter referred to as a crowd density acquisition timing), and a frequency band in which there are many conversation sounds, hustle and the like included in the extracted voice signal And the density (hereinafter referred to as crowd density) of people existing in the vicinity of the device is analyzed according to the sum of the audio information.

  Alternatively, the crowd density analysis determination unit 102 extracts the acceleration signal from the acceleration sensor 109, acquires the walking step interval when the extracted acceleration sensor is moved by the user, and analyzes the crowd density according to the width of the walking step interval. . After that, the final crowd density is analyzed by comprehensively judging the crowd density analyzed by the two pieces of information of voice information and acceleration information. The crowd density analysis determination unit 102 notifies the main control unit 101 of the analyzed crowd density.

  In this embodiment, the crowd density is analyzed based on one of the two pieces of signal information (audio signal, acceleration signal), but the present application is not limited to this. For example, the crowd density may be comprehensively determined and analyzed from the audio signal and the acceleration signal.

  The radio wave intensity measuring unit 103 monitors the beacon signal receiving unit 104 and measures the radio wave intensity of the beacon signal when the beacon signal receiving unit 104 receives the beacon signal. When the beacon signal is passed from the beacon signal receiving unit 104, the radio wave intensity measuring unit 103 determines whether or not the transmission source of the passed beacon signal is a beacon signal from the slave unit 2, and If it is a beacon signal, the main control unit 101 is notified of the measured radio wave intensity.

  The beacon signal receiving unit 104 passes the beacon signal transmitted from the handset 2 to the radio wave intensity measuring unit 103.

  The radio wave intensity storage unit 105 is a storage unit that stores a radio wave intensity management table 1050.

  Next, a process in which the main control unit 101 sets the alarm radio wave intensity will be described using the radio wave intensity management table 1050 in FIG.

  FIG. 3 is a diagram schematically showing the radio wave intensity management table 1050 stored in the radio wave intensity storage unit 105 of the mobile terminal 1.

  As shown in the figure, the radio wave intensity management table 1050 includes a crowd density field 1051 and a radio wave intensity field 1052. The crowd density field 1051 stores the crowd density. In the field strength field, field strength is stored. Reference numerals 1053 to 1055 are records stored in association with the crowd density field 1051.

  When the main control unit 101 receives the analyzed crowd density from the radio field intensity measuring unit 103, the main control unit 101 refers to the crowd density field 1051 of the radio field intensity management table 1050 and refers to the radio field intensity field 1052 corresponding to the analyzed crowd density. . Then, the numerical value of the referenced radio wave intensity field 1052 is set as the alarm radio wave intensity. Returning to the description of FIG.

  When the alarm display unit 106 is instructed to display an alarm from the main control unit 101, the alarm display unit 106 displays an alarm for a certain period.

  The microphone 107 is a sound collector that collects surrounding sounds, and transmits the collected sound signals to the crowd density analysis determination unit 102.

  The acceleration sensor 109 is a three-axis acceleration sensor that senses acceleration in the three directions of the XYZ axes, and transmits the sensed acceleration signal (the value of acceleration in the three directions of the XYZ axes) to the crowd density analysis determination unit 102.

  The input unit 110 accepts an operation for updating the radio wave intensity management table 1050 by the user (hereinafter referred to as a radio wave intensity management table update operation), and updates information in the radio wave intensity management table 1050 in cooperation with the main control unit 101.

  The subunit | mobile_unit 2 is comprised from the main control part 201 and the beacon signal transmission part 202, and is a transmitter which sends out iBeacon (trademark), for example.

  The main control unit 201 is connected to the beacon signal transmission unit 202 and instructs the beacon signal transmission unit 202 to transmit a beacon signal at regular intervals.

  When instructed to transmit a beacon signal from the main control unit 201, the beacon signal transmission unit 202 transmits the beacon signal.

  FIG. 2 is an operation flowchart of the mobile terminal 1. This flow starts when the mobile terminal 1 is powered on and can receive beacons.

  First, the mobile terminal 1 waits for the crowd density acquisition timing (S201), whether a beacon signal is received (S202), or whether a radio wave intensity management table update operation is accepted (S203).

  When it is the crowd density acquisition timing (S201, Yes), the mobile terminal 1 analyzes the crowd density (S205), refers to the radio wave intensity corresponding to the analyzed crowd density from the radio wave intensity management table 1050 (S206), The referenced radio wave intensity is set as the alarm radio wave intensity (S207), and the process returns to step 201.

  When a beacon signal is received (S202, Yes), it is determined whether the beacon signal is from a slave unit (S217). When the received beacon signal is a beacon signal from the slave unit (S217, Yes), the portable terminal 1 measures the radio wave intensity of the beacon signal (S211), and the radio wave intensity measured in step 211 is set in step 206. It is determined whether or not the alarm radio wave intensity is lower (S212).

  When the received beacon signal is not a beacon signal from the slave unit (S217, No), the process returns to step 201.

  If the radio field intensity measured in step 211 is less than the alarm radio field intensity set in step 206 (S212, Yes), the mobile terminal 1 displays an alarm for a certain period (S213) and returns to step 201.

  When the radio wave intensity measured in step 211 is not less than the alarm radio wave intensity set in step 207 (S212, No), the process returns to step 201.

  When the radio wave intensity management table update operation is received (S203, Yes), the mobile terminal 1 updates the radio wave intensity management table (S214) and returns to step 201.

  The embodiment of the present invention has been described above.

  According to the present invention, when the current crowd density is passed from the crowd density analysis determination unit 102, the main control unit 101 refers to the radio wave intensity corresponding to the crowd density from the radio wave intensity measurement unit 103, and determines the referenced radio wave intensity. Set to alarm signal strength. The main control unit 101 compares the alarm radio field intensity with the passed radio field intensity, and instructs the alarm display unit 106 to display an alarm if the passed radio field intensity is small.

  As a result, the alarm display distance can be automatically switched according to the congestion situation of the person, and lost children can be prevented.

  In addition, according to the embodiment of the present invention, the setting value table can be rewritten after waiting for the user's input upon accepting the change operation and completing the input.

  This allows the user to change the alarm settings according to the situation.

DESCRIPTION OF SYMBOLS 1 ... Portable terminal 101 ... Main control part 102 ... Crowd density analysis judgment part 103 ... Radio wave intensity measurement part 104 ... Beacon signal receiving part 105 ... Radio wave intensity memory | storage part 106 ... Alarm display unit 107 ... Mic 108 ... Camera 109 ... Acceleration sensor 110 ... Input unit 2 ... Slave unit 201 ... Main control unit 202 ... Beacon signal transmission unit

Claims (2)

A remote alarm device that notifies an alarm according to the reception intensity of a beacon signal received from a specific beacon transmitter,
A predetermined signal processing is performed on an audio signal input from a microphone included in the own apparatus, an image signal input from a camera included in the own apparatus, or an acceleration signal input from an acceleration sensor included in the own apparatus to obtain a crowd density near the own apparatus. A crowd density analyzing means for analyzing, and a threshold storage means for storing a plurality of threshold values related to the crowd density and the reception intensity to be alarmed in advance,
When the crowd density analyzed by the crowd density analysis means has a fluctuation of a predetermined value or more, the threshold storage means is referred to, and a reception intensity threshold value corresponding to the crowd density after the fluctuation is specified, and the reception If the received strength of the received beacon signal is less than or equal to the threshold, an alarm indicating that the distance between the transmission source of the received beacon signal and the own device is separated is notified. Alarm device. A remote alarm device that notifies an alarm according to the reception intensity of a beacon signal received from a specific beacon transmitter,
Predetermined with respect to a beacon signal receiving means for receiving the beacon signal, an audio signal input from a microphone included in the apparatus, an image signal input from a camera included in the apparatus, or an acceleration signal input from an acceleration sensor included in the apparatus Crowd density analysis means for performing signal processing to analyze the crowd density in the vicinity of the device, and threshold storage means for storing a plurality of threshold values related to the crowd density and the reception intensity to be alarmed in advance,
When the crowd density analyzed by the crowd density analysis means is a predetermined value or more, the function relating to the alarm notification is stopped, and the function relating to the alarm notification is stopped in advance. A remote alarm device according to a congestion situation, wherein a function related to the alarm notification is activated when a specific operation is performed.

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