JP2012253640A - Communication terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To give notice detecting a situation where a user carrying a communication terminal cannot pick himself up from a fall or an overturn.SOLUTION: A communication terminal according to the invention comprises: movement amount detection means for detecting a movement amount in a vertical direction of the communication terminal; communication means for notifying a notification destination; and notification control means for controlling the communication means. The notification control means makes the communication means notify a preset notification destination if the movement amount detection means has detected that the communication terminal is in a static state after the movement amount in the vertical direction of the communication terminal exceeded a threshold value.

Description

  The present invention relates to a communication terminal that notifies the user of an abnormal state when the user of the communication terminal carries the communication terminal.

  2. Description of the Related Art Conventionally, in order to detect an event in which a person who needs care falls from a wheelchair or a bed, there is a technology that performs notification when the user leaves the wheelchair or the bed. However, when this technology is applied to a disabled person or an elderly person who can move by himself / herself, an unnecessary notice may be given to the caregiver, which increases the burden on the caregiver.

  In response to the above problem, a mechanism has been proposed in which a person is equipped with an acceleration sensor, and when the acceleration in the vertical direction exceeds a certain threshold, it is determined that the person has fallen (Patent Document 1). In addition, a technique for performing notification by sequentially confirming the acceleration and state of a terminal using GPS and an acceleration sensor is also disclosed (Patent Documents 2 and 3).

JP 2004-252618 A JP 2011-35726 A JP 2010-277490 A

  The technique described in Patent Document 1 detects a fall and fall based on a vertical acceleration value. However, with this mechanism, if a person who has paralysis in the motor ability sits on a chair with rapid acceleration without being able to support the body, it is erroneously detected as an abnormal state even if he can sit safely. May cause unnecessary abnormal state notification. In particular, when caring at home, an increase in unnecessary abnormal state notifications is not preferable because it increases the burden on the caregiver. Further, even if the vehicle falls or falls, it is not always necessary to notify it as an abnormal state when it gets up by itself and starts again.

  Further, in the conventional technology that performs notification by sequentially checking the acceleration and state of the terminal using GPS and an acceleration sensor, there has been no mechanism for appropriately notifying a state in which a person falls and cannot get up.

  The communication terminal of the present invention comprises a movement amount detection means for detecting a movement amount of the communication terminal in the vertical direction, a communication means for notifying a notification destination, and a notification control means for controlling the communication means, The notification control means sets in advance in the communication means when the movement amount detection means detects that the communication terminal is in a stationary state after the amount of movement of the communication terminal in the vertical direction exceeds a threshold value. The notification destination is notified.

  According to the present invention, when a user carrying a communication terminal falls or falls, it is possible to distinguish and detect a situation in which the user gets up by himself and starts to act again and a situation in which he / she falls and cannot get up As a result, unnecessary abnormal state notifications can be reduced.

The figure which shows the structure of the communication terminal in embodiment of this invention The figure which shows the structure of the receiving terminal in embodiment of this invention The flowchart which shows the notification process in embodiment of this invention

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a communication terminal in the present embodiment, and FIG. 2 is a block diagram showing a configuration of a receiving terminal in the present embodiment.

  The communication terminal 1 includes a movement amount detection unit 11 and detects the movement amount of the communication terminal 1 in the vertical direction. The movement amount detection unit 11 includes an acceleration sensor 110, a gravity sensor 111, a vertical direction acceleration extraction unit 112, a vertical direction movement amount accumulation unit 113, and a time measurement unit 114. Furthermore, the communication terminal 1 includes a notification control unit 12, a communication unit 13, an authentication unit 14, and a short-range wireless communication unit 15.

  The receiving terminal 2 includes a notification unit 22, a communication unit 23, an authentication unit 24, and a short-range wireless communication unit 25.

  In the movement amount detection unit 11, the vertical direction acceleration extraction unit 112 extracts a vertical acceleration component based on the acceleration detected by the acceleration sensor 110 and the gravity direction detected by the gravity sensor 111. Then, the vertical direction moving amount integrating unit 113 calculates the moving amount (moving distance) based on the time information measured by the time measuring unit 114 and the vertical acceleration extracted by the vertical direction acceleration extracting unit 112. .

  The information on the movement amount is output to the notification control unit 12, and the notification control unit 12 determines whether or not to notify the reception terminal 2 registered in advance. The notification control unit 12 confirms whether or not the receiving terminal 2 is authenticated by the short-range wireless communication by using the short-range wireless communication unit 15 and the authentication unit 14, and if not authenticated, the communication control unit 13 Make a notification.

  For example, the communication terminal 1 is carried by a person or child who needs care, and the receiving terminal 2 is carried by a caregiver or a guardian. The fact that the receiving terminal 2 is not authenticated can be regarded as a situation where a caregiver or a guardian is in a remote location, and therefore it is determined that notification is necessary.

  FIG. 3 is a flowchart showing notification processing in the present embodiment.

  First, it is detected whether or not acceleration is detected by the acceleration sensor 110 (S101). If no acceleration is detected in S101, the process ends. On the other hand, when acceleration is detected in S101, calculation of the amount of movement in the vertical direction is started (S102).

  In S <b> 102, the vertical direction acceleration extraction unit 112 acquires acceleration data in the x-axis, y-axis, and z-axis directions of the communication terminal 1 from the acceleration sensor 110, and acquires a gravity direction from the gravity sensor 111. Based on the acceleration data from the acceleration sensor 110 and the gravity direction from the gravity sensor 111, the acceleration in the vertical direction is calculated. Then, the vertical movement amount integrating unit 113 integrates the acceleration based on the acceleration information in the vertical direction and the time information output from the time measuring unit 114, so that the communication terminal 1 of the communication terminal 1 from the start of the acceleration detection is used. Calculate the relative movement distance in the vertical direction.

  Next, the vertical direction moving amount integrating unit 113 detects whether or not the communication terminal 1 has moved in the vertical direction (downward) by a predetermined threshold or more after a predetermined time t1 has elapsed (S103). . If the amount of movement is smaller than the threshold value in S103, the process is terminated without assuming that the user carrying the communication terminal 1 has fallen or fallen.

  On the other hand, if the amount of movement is larger than the threshold value in S103, the acceleration information from the vertical direction acceleration extraction unit 112 is confirmed, and it is confirmed whether or not the communication terminal 1 is continuously moving in the vertical direction (downward). (S104). In S104, if it is determined that the vehicle continues to move in the vertical direction even after the lapse of the predetermined time t1, movement that does not need to be notified to the receiving terminal 2, such as movement in an elevator or a staircase, is performed. The process is terminated.

  On the other hand, if it is determined in S104 that the downward movement is stopped, the movement amount detection unit 11 is used to start monitoring the movement amount in the vertical direction (upward direction) after a predetermined time t1 ( S105). The specific method is the same as S102.

  As a result of accumulating the amount of movement in S105, it is confirmed that the user has moved upward by a threshold value or more (S106: YES). After the user carrying the communication terminal 1 falls, he / she gets up by his / her own care or the care of a person who is in the vicinity Because it is considered that the processing has been completed, the processing is terminated.

  On the other hand, if it is determined that it has not moved more than the threshold value in the upward direction (S106: NO), it is confirmed whether or not a certain time t2 has elapsed since the acceleration was detected (S107). Returning to S105, the amount of movement in the vertical direction is continuously monitored. If the predetermined time t2 has elapsed in S107, authentication of the reception terminal 2 registered in advance is attempted using the short-range wireless communication unit 15 and the authentication unit 14 (S108).

  In S108, the short-range wireless communication unit 15 attempts to communicate with the short-range wireless communication unit 25 of the receiving terminal 2, and if communication is possible, the authentication unit 14 on the communication terminal 1 side communicates with the authentication unit 24 of the receiving terminal 2. Try to authenticate between. The authentication result is transmitted to the notification control unit 12.

  When the authentication in S108 is successful (S109: YES), no notification is given from the communication terminal 1 to the receiving terminal 2, while when the authentication cannot be performed (S109: NO), the communication unit 13 The receiving terminal 2 is notified (S110). Then, the notification unit 22 of the receiving terminal 2 notifies the user carrying the receiving terminal 2 by sound or vibration.

  With the above notification process, it is possible to reliably detect a state in which the user carrying the communication terminal 1 cannot fall up after falling down. In addition, notification can be performed only when there is no person who needs notification in the vicinity, and unnecessary notification operations can be reduced.

  In addition, even if a situation occurs in which the user leaves the communication terminal dropped, it can be notified to the contact that has been set in advance, preventing loss. Can be useful.

  The present invention can detect and notify a situation in which a user carrying a communication terminal cannot fall and get up, and thus can be applied to a communication terminal such as a mobile phone or an information terminal.

DESCRIPTION OF SYMBOLS 1 Communication terminal 11 Movement amount detection part 12 Notification control part 13, 23 Communication part 14, 24 Authentication part 15, 25 Short-range wireless communication part 110 Acceleration sensor 111 Gravity sensor 112 Vertical direction acceleration extraction part 113 Vertical direction movement amount accumulation part 114 Time measurement unit 2 Receiving terminal 22 Notification unit

Claims (4)

A movement amount detecting means for detecting a movement amount of the communication terminal in the vertical direction;
A communication means for notifying the notification destination;
Notification control means for controlling the communication means,
The notification control means sets in advance in the communication means when the movement amount detection means detects that the communication terminal is in a stationary state after the amount of movement of the communication terminal in the vertical direction exceeds a threshold value. A communication terminal that notifies a notification destination. The movement amount detecting means includes
An acceleration sensor;
A time measuring means,
The communication terminal according to claim 1, wherein the movement amount detection unit detects the stationary state based on acceleration information from the acceleration sensor and time information from the time measurement unit. Comprising authentication means for authenticating the communication terminal set as the notification destination,
The notification control unit causes the communication unit to restrict notification to the communication terminal set as the notification destination when the communication terminal set as the notification destination in the authentication unit can be authenticated. Or the communication terminal of Claim 2. With short-range wireless communication means,
The authentication unit according to any one of claims 1 to 3, wherein the authentication unit performs authentication based on whether or not communication by the short-range wireless communication unit is established with a communication terminal set as the notification destination. Communication terminal.

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