JP6636349B2 - Alarm systems and controls - Google Patents

Description

  The present invention relates to an alarm system that issues an alarm based on a user's posture.

  At a work site where a heavy object is lifted, the worker who performs the above-mentioned work may hurt his back. In order to prevent the occurrence of back pain, for example, a manual as described in Non-Patent Document 1 has been created. However, even if a manual is created, the procedure described in the manual may not be followed due to carelessness of an operator, and back pain may occur. Therefore, techniques for preventing the occurrence of back pain have been developed.

  In Patent Document 1, the burden on the waist of the worker is calculated as a burden value, the burden on the waist where a failure may occur in the waist is set as a risk value, and the burden value is compared with the risk value. A low back pain prevention device that emits a warning sound based on this is described. The load value is calculated based on the trunk angle of the worker detected by the angle sensor and the load detected by the load sensor.

  Patent Literature 2 discloses a load calculation device that calculates a load applied to each of a plurality of lumbar vertebraes based on the position and orientation of each of the plurality of lumbar vertebrae of a user. The positions and orientations of the plurality of lumbar vertebrae are calculated from the curvature of the epidermis at the lumbar region of the user and the inclination angle of the upper body of the user. The curvature is obtained by a plurality of bending sensors. Further, the inclination angle is obtained by an acceleration sensor.

JP 2012-183291 A (released on September 27, 2012) JP-A-2015-134149 (published on July 27, 2015)

Central Occupational Accident Prevention Association, "Manual for Preventing Low Back Pain in the Workplace," October 2013

  However, the low back pain prevention device described in Patent Literature 1 requires special devices such as an angle sensor attached to the thoracic spine of the worker's back and a load sensor arranged on the sole of work shoes. Further, the load calculation device described in Patent Document 2 also requires a special device such as a bending sensor provided along the skin of the user.

  The present invention has been made in view of the above problems, and has as its object to provide an alarm system and the like which can issue an alarm to a user who has a posture that may cause low back pain with a simple configuration. Is to provide.

In order to solve the above problems, an alarm system according to an aspect of the present invention includes a first information acquisition unit that acquires first information corresponding to a height of a waist of a user, and a posture in which the user takes a forward bending posture. The second information acquisition unit that acquires the second information corresponding to the altitude of the wrist of the user, the altitude difference between the waist and the value corresponding to the altitude difference between the waist and the wrist , A calculating unit that calculates using the first information obtained by the first information obtaining unit and the second information obtained by the second information obtaining unit; and a notifying unit that issues an alarm based on the calculation result of the calculating unit. A signal transmitting device for transmitting a predetermined signal is attached to an object to be lifted by the user, and the predetermined signal has a characteristic of attenuating according to a distance from the signal transmitting device. And the signal transmission device transmits A signal detection unit configured to detect a predetermined signal, wherein the notification unit has an intensity of the predetermined signal detected by the signal detection unit equal to or greater than an intensity corresponding to a predetermined distance, and An alarm is issued only when the altitude indicated by the corresponding value is equal to or lower than a predetermined value, and the predetermined value is higher than the waist altitude of the user to the extent that the user may have low back pain. Is the value of the altitude of the wrist with respect to the altitude of the waist when is decreased .

In addition, the control device according to an aspect of the present invention includes a first information acquisition unit that acquires first information corresponding to the height of the waist of the user, and an altitude of the waist by the user taking a forward bending posture. A control device included in an alarm system including a second information obtaining unit that obtains second information corresponding to an altitude of the wrist of the user and a notification unit that issues an alarm, wherein the waist and the waist are different. A calculating unit that calculates a value corresponding to an altitude difference from a wrist using the first information obtained by the first information obtaining unit and the second information obtained by the second information obtaining unit; Based on the calculation result, the notification unit that emits an alarm by controlling the notification unit, a signal transmission device that transmits a predetermined signal is attached to the object that the user wants to lift The predetermined signal is Having a characteristic of attenuating according to the distance from the signal transmission device, further comprising a signal detection unit that detects the predetermined signal transmitted by the signal transmission device, the notification control unit is detected by the signal detection unit When the intensity of the predetermined signal is equal to or higher than the intensity corresponding to a predetermined distance, and an altitude indicated by a value corresponding to the altitude difference is equal to or lower than a predetermined value, an alarm is issued, and the predetermined value is: This is a value of the height of the wrist with respect to the height of the waist when the height of the wrist is lower than the height of the waist of the user to the extent that the user may have low back pain .

  ADVANTAGE OF THE INVENTION According to the alarm system and control apparatus which concern on one aspect of this invention, there exists an effect that a warning can be issued to the user who took the attitude | position which may generate | occur | produce a low back pain with a simple structure.

FIG. 2 is a block diagram illustrating a configuration of an alarm system according to the first embodiment. FIG. 1 is a diagram schematically illustrating an alarm system according to a first embodiment. 5 is a flowchart illustrating a flow of processing in the alarm system according to the first embodiment. (A) is a diagram showing an example of a posture in which a load is applied to the user's waist, (b) is a diagram showing an example of a posture in which a load is not easily applied to the user's waist, and (c) is a diagram showing a load on the user's waist. FIG. 10 is a diagram showing another example of a posture in which the image is hardly applied. It is a figure showing the outline of the warning system concerning Embodiment 2. FIG. 13 is a block diagram illustrating an example of an alarm system according to a third embodiment. 13 is a flowchart illustrating a flow of a process in the alarm system according to the third embodiment.

[Embodiment 1]
Hereinafter, embodiments of the present invention will be described with reference to FIGS. The alarm system 1 according to the present embodiment has a function of issuing an alarm when the user 100 takes a posture (posture) in which low back pain may occur.

(Outline of the alarm system 1)
FIG. 1 is a block diagram illustrating a configuration of an alarm system 1 according to the present embodiment. FIG. 2 is a diagram schematically illustrating the alarm system 1 according to the present embodiment. As shown in FIGS. 1 and 2, the alarm system 1 includes a waist-side device 10 and a wrist-side device 20.

  As shown in FIG. 2, the alarm system 1 is mounted by a user 100 who lifts and transports a heavy object 200 (object). Specifically, the waist-side device 10 is mounted on the waist of the user 100. On the other hand, the wrist device 20 is worn at the position of the wrist of the user 100.

(Configuration of Waist Side Device 10)
As shown in FIG. 1, the waist-side device 10 includes an air pressure sensor 11 (first information acquisition unit), a communication unit 12, a control unit 13 (control device), and a speaker 14 (notification unit).

  The pressure sensor 11 acquires a pressure (first information) corresponding to the height of the waist of the user 100. The communication unit 12 receives, by wireless communication, data indicating the atmospheric pressure acquired by the atmospheric pressure sensor 21 provided in the wrist device 20 described later. Note that the communication unit 12 may receive the data indicating the atmospheric pressure by wire communication.

  The control unit 13 includes a calculation unit 13a and a notification control unit 13b. The calculating unit 13a calculates a value corresponding to the altitude difference between the waist and the wrist of the user 100 using the atmospheric pressure acquired by the atmospheric pressure sensor 11 and the atmospheric pressure acquired by the atmospheric pressure sensor 21. In the present embodiment, the calculation unit 13a calculates a value obtained by subtracting the pressure value acquired by the pressure sensor 11 (waist side) from the pressure value acquired by the pressure sensor 21 (wrist side). (Corresponding value). In general, the pressure increases with decreasing altitude. Therefore, when the wrist of the user 100 is at a position lower than the waist of the user 100, the calculation result by the calculation unit 13a is a positive value. In addition, there is a correlation between the atmospheric pressure and the altitude. Therefore, the above calculation result can be regarded as a value corresponding to the height of the wrist with respect to the height of the waist of the user 100.

  The notification control unit 13b controls the speaker 14 based on the calculation result by the calculation unit 13a. The speaker 14 issues a sound alert to the user 100 based on the calculation result of the calculation unit 13a under the control of the notification control unit 13b. Specifically, the speaker 14 issues an alarm when the calculation result by the calculation unit 13a is equal to or higher than a predetermined pressure, that is, when the altitude corresponding to the calculation result is equal to or lower than a predetermined value. The predetermined atmospheric pressure may be set by the manufacturer of the alarm system 1 or may be set by the user 100. In the latter case, it is preferable that at least one of the waist-side device 10 and the wrist-side device 20 includes an input receiving unit (not shown) that receives an input of a predetermined atmospheric pressure by the user 100. Note that the predetermined value is a value of the wrist altitude with respect to the waist altitude when the wrist altitude is lower than the waist altitude of the user 100 to the extent that the user 100 may have low back pain. Further, the predetermined pressure is a pressure corresponding to a predetermined value.

  The volume of the alarm from the speaker 14 may be set to a volume that can be heard not only by the user 100 but also by people around the user 100. In this case, the loudspeaker 14 can issue an alarm also to the persons in the vicinity. Thereby, a person around the user 100 can call attention to the user 100.

  In addition, the waist-side device 10 may include a vibration device or a light-emitting device controlled by the notification control unit 13b instead of or in combination with the speaker 14. In this case, the notification control unit 13b can issue an alarm to the user 100 by vibration of the vibration device, light emitted by the light emitting device, or the like. Therefore, the notification control unit 13b appropriately issues an alarm to the user 100 even in an environment where it is not preferable to make an alarm sound around, or in an environment where the surrounding noise is large and it is difficult for the user 100 to hear the alarm sound. be able to. That is, it is possible to make the user 100 recognize the alarm even in the above environment.

(Configuration of Wrist Side Device 20)
As shown in FIG. 1, the wrist-side device 20 includes an air pressure sensor 21 (a second information acquisition unit) and a communication unit 22. The pressure sensor 21 acquires a pressure (second information) corresponding to the altitude of the wrist of the user 100. The communication unit 22 transmits data indicating the pressure acquired by the pressure sensor 21 to the communication unit 12 included in the lower back device 10.

(Processing in the alarm system 1)
FIG. 3 is a flowchart showing a flow of processing (alarm method, control method) in the alarm system 1. First, the calculation unit 13a obtains the air pressure at the waist and wrist altitudes of the user 100 using the air pressure sensors 11 and 21 (S1: first information obtaining step, second information obtaining step). Next, the calculation unit 13a calculates the air pressure at the wrist altitude of the user 100 with respect to the air pressure at the waist altitude of the user 100 (S2: calculation step).

  Thereafter, the notification control unit 13b determines whether the air pressure calculated in step S2 is equal to or higher than a predetermined air pressure (S3). Step S3 is equivalent to determining whether the wrist height based on the waist height of the user 100 is equal to or less than the predetermined value. If the pressure is equal to or higher than the predetermined pressure (S3, YES), the notification control unit 13b issues an alarm from the speaker 14 (S4: notification step, notification control step). Thereafter, the control unit 13 repeats the processing in order from step S1. On the other hand, when the difference between the atmospheric pressures is smaller than the predetermined atmospheric pressure (S3, NO), the notification control unit 13b does not issue an alarm from the speaker 14. Thereafter, the control unit 13 repeats the processing in order from step S1.

(Judgment in the alarm system 1)
FIG. 4A is a diagram illustrating an example of a posture in which a load is applied to the waist of the user. FIG. 4B is a diagram illustrating an example of a posture in which a load is not easily applied to the waist of the user. FIG. 4C is a diagram illustrating another example of a posture in which a load is not easily applied to the user's waist. In the examples shown in FIGS. 4A to 4C, the height of the wrist with respect to the waist height of the user 100 (the height difference in the present embodiment) is d1, d2, and d3 in order. The pressures corresponding to the respective d1 to d3, that is, the pressures output as the calculation results of the calculation unit 13a when the wrist height with respect to the waist height of the user 100 is the above d1 to d3, are sequentially p1 , P2, and p3. Further, the predetermined pressure in step S3 is set to pt. Here, pt is set such that the magnitude relation between p1 and p3 is p1>pt>p2> p3.

  As shown in FIG. 2, when the wrist altitude of the user 100 is higher than the waist altitude, the air pressure at the waist altitude is higher than the air pressure at the wrist altitude. For this reason, the calculation result in the calculation unit 13a becomes a negative value.

  In the example shown in FIG. 4A, the user 100 is trying to lift the heavy object 200 from a low position with the knees extended. At this time, the pressure p1 corresponding to the wrist height d1 with respect to the waist height of the user 100 is equal to or higher than the predetermined pressure pt. Therefore, the notification control unit 13b issues an alarm from the speaker 14.

  Next, in the example illustrated in FIG. 4B, the user 100 is trying to lift the heavy object 200 from a low position with the knee bent. At this time, since the user 100 is bending his knees, the air pressure p2 corresponding to the wrist height d2 with respect to the waist height of the user 100 is smaller than p1 and smaller than pt. Therefore, the notification control unit 13b does not issue an alarm from the speaker 14.

  Further, in the example shown in FIG. 4C, the user 100 lowers one knee from the posture shown in FIG. 4B to further lower the waist height. For this reason, the air pressure p3 corresponding to the wrist altitude d3 with respect to the waist altitude of the user 100 is further smaller than p2. For this reason, the notification control unit 13b does not issue an alarm from the speaker 14, as in the example shown in FIG.

(Effect of alarm system 1)
According to the alarm system 1, the pressure corresponding to the altitude difference between the waist and the wrist of the user 100 is calculated by the calculation unit 13a, and the calculated result is compared with a predetermined pressure to determine the posture at which low back pain may occur. It is possible to detect that the user 100 is taking. When the above posture is detected, the alarm system 1 can issue an alarm from the speaker 14 to remind the user 100 that the user 100 is trying to lift the heavy object 200 in an unreasonable posture where back pain may occur. it can. Thus, the user 100 can stop lifting the heavy object 200 and change the posture to the correct posture.

  Therefore, the alarm system 1 can reduce the risk of the user 100 suffering from low back pain in an environment where they perform daily life or work of lifting heavy objects.

  Further, the alarm system 1 can obtain the calculation result corresponding to the altitude difference only by attaching the barometric pressure sensors 11 and 21 to the waist and the wrist (parts other than the waist) of the user 100. Then, the warning system 1 can determine whether or not the user 100 is in a posture in which low back pain may occur, based on the calculation result corresponding to the altitude difference. Therefore, the warning system 1 can issue a warning to the user in the posture with the simple configuration.

(Modification)
In the alarm system according to the present invention, at least one of the control unit 13 and the speaker 14 may be provided in the wrist device 20. Further, at least one of the control unit 13 and the speaker 14 is not provided in any of the waist-side device 10 and the wrist-side device 20, and is realized as another device different from the waist-side device 10 and the wrist-side device 20. May be. When the control unit 13 is realized as another device described above, the data indicating the atmospheric pressure acquired by the atmospheric pressure sensors 11 and 21 is directly transmitted to the calculation unit 13a of the control unit 13.

  Further, in the alarm system according to the present invention, the barometric pressure sensor 21 may acquire the barometric pressure at an altitude other than the wrist of the user 100. Specifically, the barometric pressure sensor 21 corresponds to the height of the body part of the user 100 where the height difference from the waist changes when the user 100 takes a forward bending posture, for example, the shoulder, neck, or head of the user 100. The atmospheric pressure may be obtained. In this case, the predetermined pressure in step S3 of the flowchart shown in FIG. 3 is different from the pressure obtained when the pressure sensor 21 acquires the pressure at the altitude of the wrist of the user 100 (that is, the predetermined pressure corresponds to the altitude of each part described above). Pressure).

  Further, in the alarm system according to the present invention, the information corresponding to the height of the waist and the wrist of the user 100 may be information other than the atmospheric pressure. For example, the waist-side device 10 and the wrist-side device 20 may be configured so that the air pressure detected by the air pressure sensor 11 or 21 is converted into an altitude corresponding to the air pressure and then input to the calculation unit 13a. In this case, the information corresponding to the waist and wrist altitudes of the user 100 is the waist and wrist altitudes themselves. The calculation unit 13a calculates the wrist height relative to the waist height by subtracting the waist height from the wrist height.

[Embodiment 2]
Another embodiment of the present invention will be described with reference to FIG. In the alarm system 2 according to the present embodiment, a smartphone (portable information terminal) is used as a waist-side device, and a smartwatch (portable information terminal) is used as a wrist-side device.

  FIG. 5 is a diagram schematically illustrating the alarm system 2 according to the present embodiment. As shown in FIG. 5, the alarm system 2 according to the present embodiment includes a smartphone 10A and a smart watch 20A.

  The smartphone 10A includes, in addition to a telephone function and a communication function on the Internet, various sensors including a barometric pressure sensor 11 (see FIG. 1), a CPU (Central Processing Unit) realizing the function of the control unit 13, and a speaker 14. ing. The smartwatch 20A can communicate (link) with the smartphone 10A to transfer data to the smartphone 10A or display data of the smartphone 10A. Further, the smart watch 20A includes various sensors including an atmospheric pressure sensor 21 (see FIG. 1), and can acquire information on the environment such as the atmospheric pressure by itself.

  The alarm system 2 according to the present embodiment includes a smartphone 10A and a smart watch 20A. Thus, the alarm system 2 can issue an alarm to the user 100 (see FIG. 2) without using a dedicated device.

  In the alarm system according to the present embodiment, only one of the waist-side device and the wrist-side device may be a portable information terminal. For example, the alarm system according to the present embodiment may include the smartphone 10A and a wrist device other than the smartwatch. Further, for example, the alarm system according to the present embodiment may include a waist-side device that is not a smartphone and the smart watch 20A. That is, in the alarm system according to the present embodiment, at least one of the barometric pressure sensors 11 and 21 may be provided in a portable information terminal such as a smartphone or a smart watch.

[Embodiment 3]
Another embodiment of the present invention will be described with reference to FIGS. For convenience of description, members having the same functions as those described in the above embodiment are denoted by the same reference numerals, and description thereof is omitted.

(Configuration of alarm system 3)
FIG. 6 is a block diagram illustrating a configuration of the alarm system 3 according to the present embodiment. As shown in FIG. 6, the alarm system 3 includes a signal transmission device 30 in addition to the configuration of the alarm system 1, and includes a waist device 10 </ b> B instead of the waist device 10. The waist-side device 10B includes a signal detection unit 15 in addition to the configuration of the waist-side device 10, and includes a control unit 13B instead of the control unit 13. The control unit 13B includes a notification control unit 13c instead of the notification control unit 13b in the configuration of the control unit 13.

  The signal transmitting device 30 transmits a predetermined signal. The predetermined signal is a signal having a characteristic of attenuating according to the distance from the signal transmitting device 30, and may be, for example, a radio wave of a predetermined frequency. The signal transmission device 30 is attached to a heavy object 200 (see FIG. 2). The signal detection unit 15 detects a signal transmitted by the signal transmission device 30.

  The notification control unit 13c, when the altitude corresponding to the air pressure acquired by the atmospheric pressure sensor 21 is equal to or less than a predetermined value based on the altitude corresponding to the air pressure acquired by the atmospheric pressure sensor 11, similarly to the notification control unit 13b. An alarm is issued from the speaker 14. However, the notification control unit 13c issues an alarm only when the intensity of the signal detected by the signal detection unit 15 is equal to or higher than a predetermined intensity. The predetermined intensity may be, for example, the intensity of the signal assumed at a position separated from the heavy object 200 to which the signal transmission device 30 is attached by an arm length of an average human body.

  The predetermined intensity may be set by the manufacturer of the alarm system 3 or may be set by the user 100. In the latter case, it is preferable that at least one of the waist-side device 10B and the wrist-side device 20 includes an input receiving unit (not shown) that receives an input of a predetermined strength by the user 100.

(Processing in the alarm system 3)
FIG. 7 is a flowchart showing a flow of processing in the alarm system 3. As shown in FIG. 7, the flowchart in the present embodiment includes steps S11 and S12 between steps S3 and S4 in addition to steps S1 to S4 in the flowchart shown in FIG.

  When the air pressure at the altitude of the wrist of the user 100 is equal to or higher than the predetermined air pressure at the altitude of the wrist of the user 100 (S3, YES), the signal detection unit 15 detects the signal emitted by the signal transmission device 30 (S11). ). Thereafter, the notification control unit 13c determines whether the intensity of the signal detected by the signal detection unit 15 is equal to or higher than a predetermined intensity (S12).

  When the intensity of the signal is equal to or higher than the predetermined intensity (S12, YES), the notification control unit 13c issues an alarm from the speaker 14 (S4), and then executes the processing from step S1 again. On the other hand, when the signal intensity is smaller than the predetermined intensity (S12, NO), the notification control unit 13c executes the processing from step S1 again without issuing an alarm from the speaker 14.

  Note that the timing at which steps S11 and S12 in the flowchart shown in FIG. 7 are executed is an example. Step S11 may be performed at an arbitrary timing from the start of the process to before step S4 is performed. Step S12 may be executed at an arbitrary timing after step S11 is executed and before step S4 is executed. However, if step S11 is executed before step S1, after NO in step S3, NO in step 12, and step S4, control unit 13B repeats the process from step S11 instead of step S1.

(Effect of the warning system 3)
In the alarm system 3, the signal detection unit 15 detects a signal emitted by the signal transmission device 30. Then, only when the air pressure at the height of the wrist of the user 100 with respect to the air pressure at the waist altitude of the user 100 is equal to or higher than the predetermined air pressure, and the intensity of the signal detected by the signal detection unit 15 is equal to or higher than the predetermined intensity. , A warning is issued from the speaker 14.

  For this reason, by attaching the signal transmission device 30 to the heavy object 200, an alarm is issued from the speaker 14 only when approaching the heavy object 200 in a state where the wrist altitude with respect to the waist altitude of the user 100 is equal to or less than a predetermined value. Will be emitted. That is, when the user 100 takes a forward bending posture for a purpose other than lifting the heavy object 200 and reaches down, no alarm is issued from the speaker 14. For this reason, the possibility that an erroneous alarm is issued is reduced except when performing the operation of lifting the heavy object 200.

  Further, when there are a plurality of heavy objects having different weights from each other, the signal transmitting device 30 may not be attached to a heavy object lighter than a predetermined weight. In this case, when the user 100 lifts the plurality of heavy objects, it is possible to prevent an alarm from being issued if the user lifts a light object that is lighter than the predetermined weight.

[Example of software implementation]
The control blocks (especially the calculation unit 13a and the notification control units 13b and 13c) of the hip device 10 may be realized by a logic circuit (hardware) formed on an integrated circuit (IC chip) or the like, or may be realized by a CPU (Central). It may be realized by software using a processing unit.

  In the latter case, the waist-side device 10 includes a CPU that executes instructions of a program that is software for realizing each function, a ROM (Read Only Memory) in which the program and various data are recorded so as to be readable by a computer (or CPU). Alternatively, a storage device (these are referred to as “recording media”), a RAM (Random Access Memory) for expanding the above program, and the like are provided. Then, the computer (or CPU) reads the program from the recording medium and executes the program, thereby achieving the object of the present invention. As the recording medium, a “temporary tangible medium”, for example, a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. Further, the program may be supplied to the computer via an arbitrary transmission medium (a communication network, a broadcast wave, or the like) capable of transmitting the program. Note that the present invention can also be realized in the form of a data signal embedded in a carrier wave, in which the program is embodied by electronic transmission.

[Summary]
The alarm system (1) according to the first aspect of the present invention includes a first information acquisition unit (atmospheric pressure sensor 11) for acquiring first information corresponding to the waist altitude of the user (100), and the user has a forward bending posture. The second information acquisition unit (atmospheric pressure sensor 21) for acquiring second information corresponding to the altitude of the body part of the user, the altitude difference between the waist and the altitude changes. A calculating unit (13a) that calculates a value corresponding to the altitude difference using the first information acquired by the first information acquiring unit and the second information acquired by the second information acquiring unit; And a notifying unit (speaker 14) for issuing an alarm based on the calculation result.

  According to the above configuration, the calculation unit calculates the value corresponding to the difference between the waist and the body part of the user and the height, the first information corresponding to the waist height acquired by the first information acquisition unit, and the second information. The calculation is performed using the second information acquired by the acquisition unit and corresponding to the height of the body part of the user, where the height difference from the waist changes when the user takes a forward bending posture. The notification unit issues an alarm based on the calculation result of the calculation unit.

  Therefore, the alarm system can issue an alarm to the user based on the altitude difference between the user's waist and the body part. Therefore, without attaching a special device to the user to detect the posture of the user, an alarm can be issued to the user who has a posture that may cause back pain with a simple configuration.

  In the alarm system according to aspect 2 of the present invention, in the aspect 1, it is preferable that the second information acquisition unit acquires information corresponding to an altitude of the wrist of the user as the second information.

  According to the above configuration, the alarm system can issue an alarm to the user based on the altitude difference between the waist and the wrist of the user.

  In the alarm system according to aspect 3 of the present invention, in the aspect 1 or 2, the calculation result is a value corresponding to the altitude of the portion with respect to the waist altitude, and the notification unit corresponds to the calculation result. Preferably, an alarm is issued when the altitude is below a predetermined value.

  According to the above configuration, it is possible to issue an alarm when the altitude of the portion becomes lower than a predetermined value with respect to the waist altitude.

  An alarm system according to an aspect 4 of the present invention is the alarm system according to any one of the aspects 1 to 3, wherein the signal transmitting device (30) for transmitting a predetermined signal is provided on the object (heavy load 200) to be lifted by the user. A signal detection unit (15) that is attached and detects the predetermined signal transmitted by the signal transmission device, wherein the notification unit determines that the intensity of the predetermined signal detected by the signal detection unit is predetermined. It is preferable to issue an alarm only when the intensity is equal to or higher than the intensity.

  According to the above configuration, the warning system can issue a warning only when the user takes a forward bending posture near the object. Therefore, in a situation where the target object does not exist near the user, that is, in a situation where there is no possibility that a back pain will occur due to the user trying to lift the target object, a possibility of issuing a false alarm is reduced.

  An alarm system according to an aspect 5 of the present invention, in any one of the aspects 1 to 4, wherein the first information is an air pressure corresponding to the waist altitude, and the second information is an air pressure corresponding to the altitude of the portion. It is preferable that the pressure be set at a pressure that is high.

  According to the above configuration, the warning system can issue a warning based on the barometric pressure corresponding to each of the height of the user's waist and the height of the portion.

  The alarm system according to aspect 6 of the present invention, in any one of aspects 1 to 5, wherein at least one of the first information acquisition unit and the second information acquisition unit is a portable information terminal (smartphone 10A, smartwatch 20A). Is preferably provided.

  According to the above configuration, the number of devices dedicated to the alarm system can be reduced.

  The control device (control unit 13) according to the seventh aspect of the present invention includes a first information acquisition unit (11) for acquiring first information corresponding to the waist altitude of the user (100), and a posture in which the user is bent forward. The second information acquisition unit (21) for acquiring the second information corresponding to the height of the body part of the user, which changes the height difference from the waist by taking, and the notification unit (speaker 14) for issuing an alarm A control device included in the alarm system (1) including: a first information obtaining unit that obtains a value corresponding to an altitude difference between the waist and the part by the first information obtaining unit; A calculation unit (13a) that calculates using the second information acquired by the acquisition unit; and a notification control unit (13b) that issues an alarm by controlling the notification unit based on the calculation result of the calculation unit. Prepare.

  According to the above configuration, similarly to the first aspect, with a simple configuration, it is possible to issue an alarm to a user who has a posture in which low back pain may occur. Further, it is possible to suitably control an alarm system including the first information acquisition unit, the second information acquisition unit, and the notification unit.

  The warning method according to aspect 8 of the present invention provides a first information acquisition step (S1) for acquiring first information corresponding to the height of the waist of the user, and a step of bending the waist by the user taking a forward bending posture. A second information acquisition step (S1) for acquiring second information corresponding to an altitude of the body part of the user at which the altitude difference changes, and a value corresponding to the altitude difference between the waist and the part, A calculating step (S2) of calculating using the first information obtained in the first information obtaining step and the second information obtained in the second information obtaining step; and an alarm based on the calculation result in the calculating step. And an informing step (S4).

  According to the above method, similarly to the first aspect, with a simple configuration, it is possible to issue an alarm to a user who has a posture in which low back pain may occur.

  The control method according to the ninth aspect of the present invention includes the first information acquisition unit (atmospheric pressure sensor 11) for acquiring first information corresponding to the height of the waist of the user, and the user taking a forward bending posture, thereby obtaining the hip posture. An alarm including a second information acquisition unit (atmospheric pressure sensor 21) for acquiring second information corresponding to the altitude of the body part of the user, and an informing unit (speaker 14) for issuing an alarm. A control method of a control device (control unit 13) included in a system (1), wherein a value corresponding to an altitude difference between the waist and the part is obtained by the first information and the first information acquired by the first information acquisition unit. A calculation step (S2) of calculating using the second information acquired by the second information acquisition unit, and an information control step of issuing an alarm by controlling the notification unit based on the calculation result in the calculation step ( S4).

  According to the above method, as in the case of the seventh aspect, with a simple configuration, it is possible to issue an alarm to a user who has a posture in which low back pain may occur.

  The control device according to one embodiment of the present invention may be realized by a computer. In this case, the control device is realized by a computer by operating the computer as each unit (software element) included in the control device. The control program of the control device and a computer-readable recording medium on which the control program is recorded are also included in the scope of the present invention.

(Another expression of the present invention)
Note that the present invention can also be expressed as follows.

  That is, the alarm system according to one embodiment of the present invention issues an alarm when the worker takes a forward bending posture in which the upper body is bent downward with both knees extended.

  Further, an alarm system according to one aspect of the present invention includes a first device mounted near the waist of the worker and a second device mounted near the wrist of the worker, and the first device and the second device mounted near the wrist of the worker. Devices recognize each other's height relationship.

  Further, in the alarm system according to one embodiment of the present invention, the first device and the second device detect a height with a barometric pressure sensor.

  In the alarm system according to one embodiment of the present invention, the first device is a smartphone.

  In the alarm system according to one embodiment of the present invention, the second device is a smart watch.

[Appendix]
The present invention is not limited to the embodiments described above, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

1, 2, 3 alarm system 10A Smartphone (mobile information terminal)
11 Atmospheric pressure sensor (first information acquisition unit)
13, 13B control unit 13a calculation unit 13b, 13c notification control unit 14 speaker (notification unit)
15 Signal detector 20A Smart watch (portable information terminal)
21 Atmospheric pressure sensor (second information acquisition unit)
30 signal transmission device 100 user 200 heavy object (object)

Claims (3)

A first information acquisition unit that acquires first information corresponding to the height of the waist of the user;
A second information acquisition unit configured to acquire second information corresponding to a height of a wrist of the user, in which a difference in altitude from the waist changes by the user taking a forward bending posture;
A calculating unit that calculates a value corresponding to an altitude difference between the waist and the wrist using the first information acquired by the first information acquiring unit and the second information acquired by the second information acquiring unit; ,
A notification unit that issues an alarm based on the calculation result of the calculation unit ,
A signal transmitting device that transmits a predetermined signal is attached to an object to be lifted by the user, and the predetermined signal has a characteristic of attenuating according to a distance from the signal transmitting device,
Further comprising a signal detection unit for detecting the predetermined signal transmitted by the signal transmission device,
The notification unit is such that the intensity of the predetermined signal detected by the signal detection unit is equal to or higher than an intensity corresponding to a predetermined distance, and an altitude indicated by a value corresponding to the altitude difference is equal to or lower than a predetermined value. Alert only if
The predetermined value is a value of the altitude of the wrist with respect to the altitude of the waist when the altitude of the wrist is lower than the altitude of the waist of the user to the extent that the user may have low back pain. An alarm system characterized by the above. The alarm system according to claim 1, wherein at least one of the first information acquisition unit and the second information acquisition unit is provided in a portable information terminal. A first information acquisition unit that acquires first information corresponding to the height of the waist of the user;
A second information acquisition unit configured to acquire second information corresponding to a height of a wrist of the user, in which a difference in altitude from the waist changes by the user taking a forward bending posture;
A notification unit that issues an alarm, and a control device included in the alarm system including:
A calculating unit that calculates a value corresponding to an altitude difference between the waist and the wrist using the first information acquired by the first information acquiring unit and the second information acquired by the second information acquiring unit; ,
A notification control unit that issues an alarm by controlling the notification unit based on the calculation result of the calculation unit ,
A signal transmitting device that transmits a predetermined signal is attached to an object to be lifted by the user, and the predetermined signal has a characteristic of attenuating according to a distance from the signal transmitting device,
Further comprising a signal detection unit for detecting the predetermined signal transmitted by the signal transmission device,
The notification control unit is configured such that the intensity of the predetermined signal detected by the signal detection unit is equal to or greater than an intensity corresponding to a predetermined distance, and an altitude indicated by a value corresponding to the altitude difference is equal to or less than a predetermined value. Raise an alert when there is
The predetermined value is a value of the altitude of the wrist with respect to the altitude of the waist when the altitude of the wrist is lower than the altitude of the waist of the user to the extent that the user may have low back pain. A control device characterized by the above-mentioned.

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