JP6839242B2 - Alarms, alarm control methods, and alarm control programs - Google Patents

Description

The present disclosure relates to a technique for controlling alarm processing by an alarm device.

Workers working at the work site may perform dangerous work. Examples of dangerous work include rescue activities at fire sites, security activities by security guards, construction work at construction sites, subway construction, shipyard work, steelworks work, and so on. Such workers wear portable alarms when performing dangerous work. The alarm device notifies the surroundings of the danger of the worker when the worker becomes unable to move (hereinafter, also referred to as "incapacity state"). As a result, other workers can quickly find the worker who is incapacitated.

Regarding such an alarm, Japanese Patent Application Laid-Open No. 2003-109146 (Patent Document 1) discloses a portable alarm for more reliably detecting a firefighter who is in an incapacitated state. The portable alarm detects an incapacitated state of a firefighter when the output value of the acceleration sensor is below a predetermined threshold value for a predetermined time.

Japanese Unexamined Patent Publication No. 2003-109146

Normally, when the alarm device detects an incapacitated state of the worker, it sends an alarm signal indicating the incapacitated state to the server. After that, the server transmits the alarm signal to another alarm device to notify the other person of the incapacity state of the worker.

However, in a work site where the communication environment is poor, the alarm signal may not reach the server or other alarms. In this case, the incapacity of the worker is not notified to others, and the rescue of the worker may be delayed. Therefore, there is a demand for a technique for more reliably notifying others of the incapacity of a worker.

In one example of the present disclosure, the alarm device includes a communication unit for communicating with another alarm device within the communicable range, an alarm output unit for outputting an alarm, and an incapacitated state of the wearer of the alarm device. It is provided with an abnormality detection unit for detecting. When the incapacitated state is detected by the anomaly detection unit, the alarm output unit outputs an alarm, and the communication unit outputs a first alarm signal indicating the incapacitated state within the communicable range. Send to other alarms in. When the communication unit receives a second alarm signal indicating the incapacitated state of the wearer of the other alarm from the other alarm, the alarm output unit outputs an alarm and the communication unit outputs an alarm. , The received second alarm signal is transmitted to another alarm within the communicable range.

In one example of the present disclosure, the alarm device is further based on a storage unit for storing alarm information associated with different alarm modes for each positive integer and the second alarm signal received by the communication unit. , A counting unit for counting the number of other alarms issuing the second alarm signal, and a specific unit for specifying an alarm mode corresponding to the number of counts by the counting unit based on the alarm information. And. The alarm output unit outputs an alarm in the alarm mode specified by the specific unit.

In one example of the present disclosure, the alarm mode of the alarm output unit when the abnormality detection unit detects the incapacitated state is the alarm of the alarm output unit when the communication unit receives the second alarm signal. Different from the aspect.

In one example of the present disclosure, the abnormality detection unit detects the incapacitated state of the wearer when the time during which the movement amount of the wearer is below the predetermined threshold exceeds a predetermined time. The alarm further includes a sensor for detecting the tilt angle of the alarm. The predetermined threshold value when the tilt angle is included in the angle range indicating that the wearer is tilted includes the tilt angle within the angle range indicating that the wearer is standing. It is larger than the above-mentioned predetermined threshold value when there is. When the tilt angle is included in the angle range indicating that the wearer is tilted, the tilt angle is included in the angle range indicating that the wearer is standing for the predetermined time. It is shorter than the above-mentioned predetermined time when there is.

In another example of the present disclosure, the control method of the alarm is a step of detecting the incapacitated state of the wearer of the alarm, and when the incapacitated state is detected, the alarm output unit of the alarm. And the step of transmitting the first alarm signal indicating the incapacitated state to another alarm within the communicable range of the alarm, and the alarm of the wearer of the other alarm. When a second alarm signal indicating an incapacitated state is received from the other alarm device, the alarm output unit is made to output an alarm, and the received second alarm signal is transmitted to another within the communicable range. It includes a step of transmitting to an alarm.

In another example of the present disclosure, the control program of the alarm has the step of detecting the incapacitated state of the wearer of the alarm in the alarm, and the alarm when the incapacitated state is detected. A step of outputting an alarm to the alarm output unit of the device and transmitting a first alarm signal indicating the incapacitated state to another alarm within the communicable range of the alarm, and the alarm having another alarm. When a second alarm signal indicating the incapacitated state of the wearer of the device is received from the other alarm device, the alarm output unit is made to output an alarm, and the received second alarm signal is transmitted within the communicable range. Have them perform the steps to send to other alarms inside.

The above and other objectives, features, aspects and advantages of the present invention will become apparent from the following detailed description of the present invention as understood in connection with the accompanying drawings.

It is a figure which shows a plurality of workers who wear an alarm according to an embodiment. It is a figure which shows the surface of the alarm according to embodiment. It is a figure which shows the back surface of the alarm according to embodiment. It is a figure which shows the alarm mode of the alarm when one worker becomes incapable of action. It is a figure which shows the alarm mode of the alarm when a plurality of workers become incapable of acting. It is a figure which shows an example of the data structure of the alarm information. It is a block diagram which shows an example of the hardware configuration of the alarm according to embodiment. It is a figure which shows an example of the functional structure of the alarm device according to an embodiment. It is a figure which showed the movement amount of the wearer of the alarm according to embodiment in time series. It is a flowchart which shows the notification process for notifying the surroundings that the wearer has become incapacitated. It is a figure which shows an example of the alarm mode in a pre-alarm mode "1". It is a figure which shows an example of the alarm mode in a pre-alarm mode "2". It is a figure which shows an example of the alarm mode in a pre-alarm mode "3". It is a figure which shows an example of the alarm mode in this alarm mode. It is a flowchart which shows the alarm processing for notifying the incapacitated state of another person. It is a figure which shows the alarm mode of the other person's danger alarm mode when the number of incapacitated persons is one person. It is a figure which shows the alarm mode of the other person's danger alarm mode when the number of incapacitated persons is two.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In the following description, the same parts and components are designated by the same reference numerals. Their names and functions are the same. Therefore, the detailed description of these will not be repeated. In addition, each embodiment and each modification described below may be selectively combined as appropriate.

<A. Alarm mode of alarm system 500>
The alarm system 500 will be described with reference to FIGS. 1 to 3. FIG. 1 is a diagram showing a plurality of workers wearing alarms.

The alarm system 500 is composed of alarm devices 100A to 100E. The alarm 100A is attached to the worker 1A. The alarm 100B is attached to the worker 1B. The alarm 100C is attached to the worker 1C. The alarm 100D is attached to the worker 1D. The alarm device 100E is attached to the worker 1E.

Note that FIG. 1 shows an example in which the alarm system 500 is composed of five alarm devices 100A to 100E, but the number of alarm devices is arbitrary as long as it is two or more. Hereinafter, at least one of the alarm devices 100A to 100E will also be referred to as an alarm device 100.

The alarm device 100 is equipped with a communication module for wirelessly communicating with another alarm device 100. The communication module performs wireless communication in, for example, a communication band of 920 MHz. Alternatively, the communication module performs wireless communication according to an arbitrary wireless communication standard such as Bluethoth (registered trademark). By configuring the alarm devices 100 to communicate with each other, each of the alarm devices 100 becomes a radio base, and multi-hop communication can be realized. As a result, the alarms 100A to 100E form a wider mesh network.

The alarm 100 can communicate with other alarms 100 within the communicable range. The "communicable range" here means a range in which a signal emitted from the alarm device 100 reaches another alarm device 100. The communicable range of the alarm device 100 is, for example, a range within a radius of 100 m centered on the alarm device 100. The communicable range varies depending on obstacles and the surrounding environment.

In the example of FIG. 1, the alarm devices 100B and 100C exist within the communicable range of the alarm device 100A. The alarm devices 100A, 100C, and 100D exist within the communicable range of the alarm device 100B. The alarm devices 100A, 100B, 100D, and 100E exist within the communicable range of the alarm device 100C. The alarm devices 100B, 100C, and 100E exist within the communicable range of the alarm device 100D. The alarm devices 100C and 100D exist within the communicable range of the alarm device 100E.

The alarm device 100 has a function of detecting an incapacitated state of the wearer. The "incapacitated state" here means a state in which the worker cannot move. As an example, incapacity includes a worker's stunned or fainted state. The details of the incapacity notification method will be described later.

<B. Appearance of alarm 100>
Next, the appearance of the alarm device 100 will be described with reference to FIGS. 2 and 3. FIG. 2 is a diagram showing the surface of the alarm device 100. FIG. 3 is a diagram showing the back surface of the alarm device 100.

As shown in FIG. 2, the alarm device 100 includes a power / alarm release button 108, a manual alarm button 109, a light emitting unit 111, a belt loop 112, a power supply 113, and a tally key 114.

The power / alarm release button 108 accepts the activation operation of the alarm device 100. When the wearer of the alarm device 100 presses the power / alarm release button 108, power is supplied from the power supply 113 to various devices of the alarm device 100, and the alarm device 100 is activated. Further, the power / alarm release button 108 receives the release of the alarm output of the alarm device 100. When the wearer of the alarm device 100 presses the power / alarm release button 108, the alarm output by the alarm device 100 is stopped.

The manual alarm button 109 is a button for enabling the alarm output. When the wearer of the alarm device 100 presses the manual alarm button 109, an alarm is output from the alarm device 100.

The light emitting unit 111 is an example of an alarm output unit. The light emitting unit 111 is composed of, for example, a light emitting element that emits light in red, a light emitting element that emits light in green, and a light emitting element that emits light in blue. By adjusting the emission intensity of each light emitting element, the light emitting unit 111 can emit light in an arbitrary emission color.

The belt loop 112 is fixed to the alarm device 100 and is configured to pass the belt. The alarm 100 is fixed to the worker by passing the belt worn by the worker through the belt loop 112. The operator can pass the belt from either the X direction or the Z direction shown in FIG.

The power supply 113 supplies electric power to various devices of the alarm device 100. The power supply 113 is, for example, a battery and is configured to be replaceable.

The tally key 114 is configured to be insertable into the alarm device 100. When the tally key 114 is removed from the alarm device 100, the operation mode of the alarm device 100 shifts to the sensing mode, and the incapacity detection function becomes effective. On the other hand, when the tally key 114 is inserted into the alarm device 100, the incapacity detection function becomes invalid.

<C. Alarm function of alarm device 100>
Next, the alarm function of the alarm device 100 will be described. When the alarm device 100 detects the incapacitated state of the wearer, the alarm device 100 outputs an alarm and another alarm device 100 within the communicable range of an alarm signal (first alarm signal) indicating the incapacitated state. Send to. Further, when the alarm device 100 receives an alarm signal (second alarm signal) indicating an incapacitating state of the wearer of the other alarm device 100 from the other alarm device 100, the alarm device 100 outputs an alarm and receives the alarm signal. The alarm signal is transmitted to another alarm device 100 within the communicable range.

In this way, the alarm device 100 has a function of notifying the wearer's own incapacity state, a function of notifying the wearer's own incapacity state to the other alarm device 100, and notifying the other person's incapacity state. It has a function and a function of transmitting the incapacity state of another person to another alarm device 100.

Hereinafter, an example of the alarm mode of the alarm system 500 will be described with reference to FIG. FIG. 4 is a diagram showing an alarm mode when one worker becomes incapacitated. In the following, the explanation will be given on the premise that the worker 1A is incapable of acting.

When the alarm device 100A detects the incapacitated state of the worker 1A, the alarm device 100A outputs an alarm to the surroundings. As an example, the alarm device 100A blinks the above-mentioned light emitting unit 111 with a predetermined light emitting color and emits an alarm sound. As a result, the alarm device 100A notifies the surroundings of the incapacitated state of the worker 1A.

Further, the alarm device 100A transmits an alarm signal indicating the incapacitated state of the worker 1A to another alarm device within the communicable range of the alarm device 100A. In the example of FIG. 4, the alarm device 100A transmits an alarm signal to the alarm devices 100B and 100C. As a result, the workers 1B and 1C can quickly notice the incapacitated worker 1A.

Each of the alarm devices 100B and 100C outputs an alarm based on the reception of the alarm signal from the alarm device 100A. As an example, each of the alarm devices 100B and 100C lights the light emitting unit 111 with a predetermined light emitting color (for example, yellow) and emits an alarm sound. As a result, the workers 1B and 1C can recognize that one of the workers is in an incapacitated state.

Further, each of the alarm devices 100B and 100C transmits the received alarm signal to other alarm devices within the communicable range of the alarm devices 100B and 100C based on the reception of the alarm signal from the alarm device 100A. To do. In the example of FIG. 4, the alarm device 100B transmits the alarm signal received from the alarm device 100A to the alarm devices 100C and 100D. Further, the alarm device 100C transmits the alarm signal received from the alarm device 100A to the alarm devices 100B, 100D, 100E.

Each of the alarm devices 100D and 100E outputs an alarm based on the reception of the alarm signal from the alarm devices 100B and 100E. As an example, each of the alarm devices 100D and 100E lights the light emitting unit 111 with a predetermined light emitting color (for example, yellow) and emits an alarm sound. As a result, the alarm signal of the alarm device 100A is transmitted to the alarm devices 100D and 100E outside the communicable range of the alarm device 100A by relaying the alarm devices 100B and 100C.

As described above, each of the alarm devices 100A to 100E has a function as a repeater. As a result, the alarm device 100 can more reliably transmit the alarm signal to other alarm devices even at a work site where the communication environment is poor. In particular, at dangerous work sites, the communication environment is often poor due to the influence of obstacles and the surrounding environment. Therefore, the effect of the above-mentioned relay function becomes particularly remarkable in a dangerous work site.

Further, the alarm device 100A does not go through the server when transmitting the alarm signal to the alarm devices 100B to 100E. Therefore, the alarm 100A can convey the incapacitated state of the worker 1A to the other alarms 100B to 100E without being affected by the communication environment with the server.

<D. Alarm mode of alarm device 100>
Next, another example of the alarm mode of the alarm device 100 will be described with reference to FIGS. 5 and 6. FIG. 5 is a diagram showing an alarm mode when a plurality of workers become incapacitated. In the following, the explanation will be given on the premise that the two workers 1A and 1E are incapacitated.

The alarm device 100A issues an alarm signal to other alarm devices to the surroundings based on the detection of the incapacity state of the worker 1A. As a result, the alarm signal is propagated to the alarm devices 100B to 100E.

Similarly, the alarm device 100E emits an alarm signal to other alarm devices to the surroundings based on the detection of the incapacity state of the worker 1E. As a result, the alarm signal is propagated to the alarm devices 100A to 100D.

Each of the alarm devices 100B to 100D counts the number of other alarm devices issuing the alarm signal based on the alarm signals received from the alarm devices 100A and 100E. The count number corresponds to the number of incapacitated persons. Details of the method for identifying the number of incapacitated persons will be described later.

The alarm devices 100B to 100D output an alarm in an alarm mode according to the number of incapacitated persons based on the alarm information 124 shown in FIG. FIG. 6 is a diagram showing an example of the data structure of the alarm information 124. The alarm information 124 is stored in advance in, for example, the non-volatile memory 102 (see FIG. 7) of the alarm device 100.

As shown in FIG. 6, the alarm information 124 is associated with the alarm mode of the alarm device 100 according to the number of incapacitated persons. The number of incapacitated persons defined in the alarm information 124 is indicated by a positive integer (that is, a natural number) and is defined by a serial number from 1. The alarm mode defined in the alarm information 124 is defined by at least one of the emission color of the light emitting unit 111, the alarm sound of the speaker 107 (see FIG. 7) described later, and other notification modes.

Each of the alarm devices 100B to 100D identifies an alarm mode corresponding to the current number of incapacitated persons with reference to the alarm information 124, and operates in the specified alarm mode. As an example, when the number of incapacitated persons is one, each of the alarm devices 100B to 100D lights the light emitting unit 111 with a predetermined first emission color and emits a predetermined first alarm sound. Output from speaker 107. On the other hand, when the number of incapacitated persons is two, each of the alarm devices 100B to 100D lights the light emitting unit 111 with a second light emitting color different from the first light emitting color, and the first alarm. A second alarm sound different from the sound is output from the speaker 107. In the examples of FIGS. 5 and 6, since the number of incapacitated persons is two, the emission color “red” and the alarm sound “alarm sound 2” are specified as the alarm modes. The alarm devices 100B to 100D output an alarm in the specified alarm mode.

As described above, the alarm device 100 changes the alarm mode according to the number of incapacitated persons. As a result, the wearer of the alarm device 100 can easily grasp the number of incapacitated persons. In addition, when the number of incapacitated persons is large, the worker can infer the state of the work site such as an accident. Furthermore, the worker can make a rescue plan according to the number of incapacitated persons by confirming the alarm mode.

<E. Hardware configuration of alarm 100>
The hardware configuration of the alarm device 100 will be described with reference to FIG. 7. FIG. 7 is a block diagram showing an example of the hardware configuration of the alarm device 100.

As shown in FIG. 7, the alarm device 100 includes a control device 101, a non-volatile memory 102, a wireless communication module 103, an acceleration sensor 104, a timer 106, a speaker 107, and a power / alarm release button 108. , A manual alarm button 109, a light emitting unit 111, and a power supply 113. These hardware configurations are electrically connected via an internal bus.

Since the power / alarm release button 108, the manual alarm button 109, the light emitting unit 111, and the power supply 113 are as described with reference to FIGS. 2 and 3 above, the description thereof will not be repeated below.

The control device 101 controls the alarm device 100. The control device 101 is composed of, for example, at least one integrated circuit. An integrated circuit is composed of, for example, at least one CPU (Central Processing Unit), at least one ASIC (Application Specific Integrated Circuit), at least one FPGA (Field Programmable Gate Array), or a combination thereof.

The non-volatile memory 102 is a recording medium capable of holding data even when the power is off, and is, for example, a ROM (Read Only Memory). The non-volatile memory 102 stores various data (for example, alarm information 124) used when the control program 102A of the alarm device 100 and the control program 102A are executed.

The wireless communication module 103 is configured to realize communication with other communication devices such as the alarm device 100. The wireless communication module 103 performs wireless communication in, for example, a communication band of 920 MHz. Alternatively, the wireless communication module 103 may perform wireless communication according to an arbitrary wireless communication standard such as Bluethoth. The alarm device 100 realizes communication with another alarm device 100 via the wireless communication module 103.

The acceleration sensor 104 is a sensor for detecting the acceleration of the alarm device 100, and preferably, the acceleration sensor 104 detects the acceleration (or velocity) in each of the X, Y, and Z axes orthogonal to each other. The X-axis direction corresponds to one direction on the horizontal plane. The Y-axis direction corresponds to the direction on the horizontal plane orthogonal to the X-axis direction. The Z-axis direction corresponds to a direction orthogonal to the X-axis and the Y-axis (that is, the direction of gravity). The value detected by the acceleration sensor 104 is used as a reference for determining whether or not the wearer of the alarm device 100 is in an incapacitated state. The details of the method of detecting the incapacitated state will be described later.

The sensor for detecting the incapacitated state is not limited to the acceleration sensor 104. For example, a gyro sensor may be used instead of the acceleration sensor 104. The gyro sensor detects the angular velocity around each of the X-axis, Y-axis, and Z-axis. As an example, when the state in which the amount of change in the detection value of the gyro sensor is below a predetermined threshold value continues for a certain period of time or more, the alarm device 100 detects the incapacitated state of the wearer.

Further, a geomagnetic sensor may be used instead of the acceleration sensor 104. The geomagnetic sensor is a sensor for measuring the direction of a magnetic field (magnetic field) and detecting the tilt angle of the alarm device 100. The geomagnetic sensor can also be used to detect an incapacitated state of the wearer. As an example, when the state in which the amount of change in the detection value of the geomagnetic sensor is below a predetermined threshold value continues for a certain period of time or more, the alarm device 100 detects the incapacitated state of the wearer.

The timer 106 is a device for measuring time. The timer 106 may be replaced by a timekeeping function provided in the control device 101.

The speaker 107 is an example of an alarm output unit. The speaker 107 is composed of a piezoelectric diaphragm or the like, and outputs various sounds by vibrating the piezoelectric diaphragm in accordance with a control command from the control device 101. The speaker 107 outputs an alarm sound according to a control command from the control device 101.

The control program 102A may be provided by being incorporated into a part of an arbitrary program, not as a single program. In this case, various processes according to the present embodiment are realized in cooperation with an arbitrary program. Even a program that does not include such a part of modules does not deviate from the purpose of the control program 102A according to the present embodiment. Further, some or all of the functions provided by the control program 102A may be realized by dedicated hardware. Further, the alarm device 100 may be configured in the form of a so-called cloud service in which at least one server executes a part of the processing of the control program 102A.

<F. Functional configuration of alarm 100>
The functional configuration of the alarm device 100 will be described with reference to FIGS. 8 and 9. FIG. 8 is a diagram showing an example of the functional configuration of the alarm device 100.

As shown in FIG. 8, the control device 101 of the alarm device 100 includes an abnormality detection unit 150, a communication unit 152, a counting unit 154, a specific unit 156, and an output control unit 158 as functional modules.

The abnormality detection unit 150 detects the incapacitated state of the wearer based on the output value of the acceleration sensor 104 (see FIG. 7). A method of detecting an incapacitated state by the abnormality detection unit 150 will be described with reference to FIG. FIG. 9 is a diagram showing the amount of movement of the wearer of the alarm device 100 in chronological order.

The amount of movement of the wearer of the alarm device 100 is calculated from, for example, the detected value of the acceleration sensor 104. As described above, the acceleration sensor 104 detects the acceleration (or velocity) in each of the X, Y, and Z axes orthogonal to each other. In a certain aspect, the abnormality detection unit 150 calculates at least one moving average of various detected values detected by the acceleration sensor 104 as the movement amount of the wearer. In another aspect, the abnormality detection unit 150 synthesizes (for example, integration or averaging) at least two of the various detection values detected by the acceleration sensor 104, and calculates the moving average of the combined values as the movement amount of the wearer. ..

As shown in FIG. 9, it is assumed that the movement amount of the wearer falls below the predetermined threshold value th at the time T1. Based on this, the abnormality detection unit 150 initializes the count value by the timer 106 (see FIG. 7) and starts counting the count value. The count value corresponds to the non-operating time during which the wearer is not operating.

It is assumed that the movement amount of the wearer exceeds the threshold value th at the time T2. As a result, the abnormality detection unit 150 stops counting the non-operating time. Since the non-operating time “ΔT1” of the wearer is shorter than the predetermined time Tth, the abnormality detection unit 150 determines that the wearer is stationary. That is, in this case, the abnormality detection unit 150 does not determine that the wearer is in an incapacitated state.

It is assumed that the movement amount of the wearer falls below the predetermined threshold value th again at the time T3. Based on this, the abnormality detection unit 150 initializes the count value by the timer 106 (see FIG. 7) and starts counting the count value.

It is assumed that the non-operating time of the wearer exceeds the predetermined time Tth at the time T4. Based on this, the abnormality detection unit 150 detects the incapacitated state of the wearer. In this way, the abnormality detection unit 150 determines that the wearer is in an incapacitated state when the wearer's non-operating state continues for a certain period of time or longer. The abnormality detection unit 150 outputs this to the communication unit 152 based on the detection of the incapacity state.

Preferably, the abnormality detection unit 150 changes the detection sensitivity of the incapacitated state according to the tilt angle of the alarm device 100. The tilt angle of the alarm device 100 is calculated based on, for example, the output values of the acceleration sensor 104, the gyro sensor, and the geomagnetic sensor. The tilt angle of the alarm device 100 is represented by, for example, the angle between the y-axis direction shown in FIG. 3 and the gravity direction.

When the wearer of the alarm 100 is standing, it is unlikely that the wearer is incapacitated. On the other hand, when the wearer of the alarm device 100 has fallen, there is a high possibility that the wearer is in an incapacitated state. Focusing on this point, the abnormality detection unit 150 changes the detection sensitivity of the incapacitated state according to the posture of the wearer.

More specifically, the abnormality detection unit 150 determines that the wearer is in a fall state when the tilt angle of the alarm 100 is included in a predetermined angle range indicating that the wearer is fallen. to decide. On the other hand, the abnormality detection unit 150 determines that the wearer is in the standing state when the tilt angle of the alarm device 100 is included in the predetermined angle range indicating that the wearer is standing.

The abnormality detection unit 150 makes the threshold value th when the wearer is in the fallen state larger than the threshold value th when the wearer is in the standing state. Further, the abnormality detection unit 150 shortens the predetermined time Tth when the wearer is in the fallen state to be shorter than the predetermined time Tth when the wearer is in the standing state. As a result, the detection sensitivity of the incapacitated state when the wearer is in the fall state is higher than the detection sensitivity of the incapacitated state when the wearer is in the standing state, and false detection of the incapacitated state is suppressed. ..

The abnormality detection unit 150 does not necessarily have to change both the threshold value th and the predetermined time Tth. That is, the abnormality detection unit 150 may change only the threshold value th or change only the predetermined time Tth.

With reference to FIG. 8 again, the communication unit 152 controls the wireless communication module 103 (see FIG. 7) of the alarm device 100. The communication unit 152 transmits an alarm signal indicating that the wearer is in an incapacitated state to another alarm device based on the detection of the incapacitated state by the abnormality detecting unit 150. When the communication unit 152 receives an alarm signal from another alarm device within the communicable range of the alarm device 100, the communication unit 152 outputs the alarm signal to the count unit 154 and within the communicable range of the alarm device 100. The alarm signal is transmitted to the other alarm device 100 in.

The counting unit 154 counts the number of other alarm devices 100 that are issuing alarm signals based on the alarm signals received from the other alarm devices 100. The alarm signal received from the other alarm device 100 includes identification information for uniquely identifying the alarm device. The identification information is, for example, an ID (Identification) or the name of an alarm. The identification information is written in the incapacitated person information 123 stored in the non-volatile memory 102.

More specifically, the counting unit 154 acquires the identification information indicating the transmission source from the received alarm signal, and determines whether or not the identification information is already registered in the incapacitated person information 123. If it is determined that the identification information is already registered in the incapacitated person information 123, the counting unit 154 does not write the identification information in the incapacitated person information 123. On the other hand, when it is determined that the identification information is not registered in the incapacitated person information 123, the counting unit 154 writes the identification information in the incapacitated person information 123. The counting unit 154 counts the number of identification information registered in the incapacitated person information 123, and identifies the count result as the incapacitated person number.

The identification unit 156 identifies an alarm mode corresponding to the number of incapacitated persons specified by the counting unit 154 with reference to the alarm information 124 (see FIG. 6) described above. The identification unit 156 outputs the specified alarm mode to the output control unit 158.

The output control unit 158 operates the speaker 107, the light emitting unit 111, and the like based on the alarm mode specified by the specific unit 156. As a result, the output control unit 158 notifies the number of incapacitated persons in an alarm mode.

Further, the output control unit 158 operates the speaker 107, the light emitting unit 111, and the like when the abnormality detection unit 150 detects the incapacitated state of the wearer of the alarm device 100. As a result, the output control unit 158 notifies the surroundings of the incapacitated state of the wearer of the alarm device 100.

Typically, the output control unit 158 makes the alarm mode when the abnormality detection unit 150 detects the incapacitated state different from the alarm mode when the alarm signal is received from the other alarm device 100. Thereby, the alarm mode of the wearer's own incapacity state and the alarm mode of the incapacity state of another person are distinguished.

<G. Notification flow of incapacity to others ＞
The control structure of the alarm device 100 will be described with reference to FIGS. 10 to 14. FIG. 10 is a flowchart showing a notification process for notifying the surroundings that the wearer has become incapacitated.

The process of FIG. 10 is realized by the control device 101 of the alarm device 100 executing the above-mentioned control program 102A (see FIG. 7). In other aspects, some or all of the processing may be performed by circuit elements or other hardware.

In step S110, the control device 101 calculates the movement amount of the wearer of the alarm device 100 per unit time based on the detected value of the acceleration sensor 104, and whether the movement amount is below the threshold value th (see FIG. 9). Judge whether or not. When the control device 101 determines that the movement amount of the alarm device 100 has fallen below the threshold value th (YES in step S110), the control device 101 switches the control to step S112. If not (NO in step S110), the control device 101 re-executes the process of step S110.

In step S112, the control device 101 initializes the count value by the timer 106 (see FIG. 7) and causes the timer 106 to start counting the count value.

In step S120, the control device 101 functions as the above-mentioned abnormality detection unit 150 (see FIG. 8), and determines whether or not the non-operating time of the wearer of the alarm device 100 exceeds the first threshold value. The first threshold value may be set in advance or may be arbitrarily set by the user. When the control device 101 determines that the non-operating time of the wearer of the alarm device 100 exceeds the first threshold value (YES in step S120), the control device 101 switches the control to step S124. If not (NO in step S120), the controller 101 switches control to step S122.

In step S122, the control device 101 functions as the above-mentioned abnormality detection unit 150, calculates the movement amount of the wearer of the alarm device 100 per unit time based on the detection value of the acceleration sensor 104, and the movement amount is calculated. It is determined whether or not the threshold value th (see FIG. 9) has been exceeded. When the control device 101 determines that the movement amount of the alarm device 100 exceeds the threshold value th (YES in step S122), the control device 101 returns the control to step S110. If not (NO in step S122), the controller 101 returns control to step S120.

In step S124, the control device 101 functions as the output control unit 158 (see FIG. 8) described above, and starts alarm processing to the surroundings in the alarm mode indicating the pre-alarm mode “1”. FIG. 11 is a diagram showing an example of an alarm mode in the pre-alarm mode “1”. In the pre-alarm mode "1", the control device 101 operates the speaker 107 so as to repeatedly output and stop the sound at predetermined intervals (for example, at intervals of 2 seconds), and sets the emission color of the light emitting unit 111 at predetermined intervals (for example, 2 seconds). Switch at 2 second intervals). In the example of FIG. 11, the light emitting unit 111 is alternately lit in green and blue.

In step S130, the control device 101 functions as the above-mentioned abnormality detection unit 150, and determines whether or not the non-operating time of the wearer of the alarm 100 exceeds the second threshold value. The second threshold value may be set in advance or may be arbitrarily set by the user. The second threshold is larger than the first threshold shown in step S120. When the control device 101 determines that the non-operating time of the wearer of the alarm device 100 exceeds the second threshold value (YES in step S130), the control device 101 switches the control to step S134. If not (NO in step S130), the control device 101 switches control to step S132.

In step S132, the control device 101 functions as the above-mentioned abnormality detection unit 150, calculates the movement amount of the wearer of the alarm device 100 per unit time based on the detection value of the acceleration sensor 104, and the movement amount is calculated. It is determined whether or not the threshold value th (see FIG. 9) has been exceeded. When the control device 101 determines that the movement amount of the alarm device 100 exceeds the threshold value th (YES in step S132), the control device 101 returns the control to step S110. If not (NO in step S132), the controller 101 returns control to step S130.

In step S134, the control device 101 functions as the output control unit 158 described above, raises the alarm output level from the pre-alarm mode “1”, and performs alarm processing to the surroundings in an alarm mode indicating the pre-alarm mode “2”. To start. FIG. 12 is a diagram showing an example of an alarm mode in the pre-alarm mode “2”. In the pre-alarm mode "2", the control device 101 operates the speaker 107 so as to repeatedly output and stop the sound at predetermined intervals (for example, 1.5 second intervals), and sets the emission color of the light emitting unit 111 at predetermined intervals. (For example, every 1.5 seconds). In the example of FIG. 12, the light emitting unit 111 is alternately lit in blue and red.

In step S140, the control device 101 functions as the above-mentioned abnormality detection unit 150, and determines whether or not the non-operating time of the wearer of the alarm 100 exceeds the third threshold value. The third threshold value may be set in advance or may be arbitrarily set by the user. The third threshold is larger than the second threshold shown in step S130. When the control device 101 determines that the non-operating time of the wearer of the alarm device 100 exceeds the third threshold value (YES in step S140), the control device 101 switches the control to step S144. If not (NO in step S140), the control device 101 switches control to step S142.

In step S142, the control device 101 calculates the movement amount of the wearer of the alarm device 100 per unit time based on the detection value of the acceleration sensor 104 as the above-mentioned abnormality detection unit 150, and the movement amount is the threshold value th. It is determined whether or not the amount exceeds (see FIG. 9). When the control device 101 determines that the movement amount of the alarm device 100 exceeds the threshold value th (YES in step S142), the control device 101 returns the control to step S110. If not (NO in step S142), the controller 101 returns control to step S140.

In step S144, the control device 101 functions as the output control unit 158 described above, raises the alarm output level from the pre-alarm mode “2”, and performs alarm processing to the surroundings in an alarm mode indicating the pre-alarm mode “3”. To start. FIG. 13 is a diagram showing an example of an alarm mode in the pre-alarm mode “3”. In the pre-alarm mode "3", the control device 101 operates the speaker 107 so as to repeatedly output and stop the sound at predetermined intervals (for example, 1 second intervals), and sets the emission color of the light emitting unit 111 at predetermined intervals (for example, 1 second interval). Switch at 1-second intervals). In the example of FIG. 13, the light emitting unit 111 is alternately lit in blue and red.

In step S150, the control device 101 functions as the above-mentioned abnormality detection unit 150, and determines whether or not the non-operating time of the wearer of the alarm 100 exceeds the fourth threshold value. The fourth threshold value may be set in advance or may be arbitrarily set by the user. The fourth threshold is larger than the third threshold shown in step S140. When the control device 101 determines that the non-operating time of the wearer of the alarm device 100 exceeds the fourth threshold value (YES in step S150), the control device 101 switches the control to step S154. If not (NO in step S150), the control device 101 switches control to step S152.

In step S152, the control device 101 functions as the above-mentioned abnormality detection unit 150, calculates the movement amount of the wearer of the alarm device 100 per unit time based on the detection value of the acceleration sensor 104, and the movement amount is calculated. It is determined whether or not the threshold value th (see FIG. 9) has been exceeded. When the control device 101 determines that the movement amount of the alarm device 100 exceeds the threshold value th (YES in step S152), the control device 101 returns the control to step S110. If not (NO in step S152), the controller 101 returns control to step S150.

In step S154, the control device 101 functions as the output control unit 158 described above, and starts alarm processing to the surroundings in the alarm mode as the alarm mode. FIG. 14 is a diagram showing an example of an alarm mode in this alarm mode. In this alarm mode, the control device 101 continuously outputs sound to the speaker 107, and switches the emission color of the light emitting unit 111 at predetermined intervals (for example, 0.5 second intervals). In the example of FIG. 14, the light emitting unit 111 is repeatedly lit in red, green, and blue in sequence.

In step S160, the control device 101 functions as the communication unit 152 (see FIG. 8) described above, and sends an alarm signal indicating that the wearer is in an incapacitated state to another alarm device 100 within the communicable range. Send.

In this way, the control device 101 sequentially raises the alarm output level as the wearer's non-operating time becomes longer. As a result, the control device 101 can release the alarm by moving before entering the alarm mode in the operable state, and can prevent the malfunction of the alarm mode.

<H. Notification flow of incapacity from others ＞
The control structure of the alarm device 100 will be further described with reference to FIGS. 15 to 17. FIG. 15 is a flowchart showing an alarm process for notifying the incapacitated state of another person.

The process of FIG. 15 is realized by the control device 101 of the alarm device 100 executing the above-mentioned control program 102A (see FIG. 7). In other aspects, some or all of the processing may be performed by circuit elements or other hardware.

In step S210, the control device 101 functions as the communication unit 152 (see FIG. 8) described above, and determines whether or not an alarm signal has been received from another alarm device 100. When the control device 101 determines that the alarm signal has been received from the other alarm device 100 (YES in step S210), the control device 101 switches the control to step S212. If not (NO in step S210), the control device 101 switches control to step S230.

In step S212, the control device 101 functions as the communication unit 152 described above, and the alarm signal received from the first other alarm device 100 is sent to the second other alarm device within the communicable range of the alarm device 100. Send to 100. In this way, the alarm 100 functions as a repeater between the first other alarm 100 and the second other alarm 100.

In step S214, the control device 101 acquires identification information (for example, ID) indicating the transmission source from the received alarm signal. Next, the alarm device 100 determines whether or not the identification information is already registered in the incapacitated person information 123 (see FIG. 8). If it is determined that the identification information is already registered in the incapacitated person information 123, the control device 101 does not write the identification information in the incapacitated person information 123. On the other hand, when it is determined that the identification information is not yet registered in the incapacitated person information 123, the control device 101 writes the identification information in the incapacitated person information 123.

In step S230, the control device 101 functions as the counting unit 154 (see FIG. 8) described above, and counts the identification information registered in the incapacitated person information 123. The count result represents the number of incapacitated persons.

In step S232, the control device 101 functions as the above-mentioned identification unit 156 (see FIG. 8), and refers to the above-mentioned alarm information 124 (see FIG. 6) to specify an alarm mode corresponding to the number of incapacitated persons. .. After that, the control device 101 operates the speaker 107 and the light emitting unit 111 in the specified alarm mode.

FIG. 16 is a diagram showing an alarm mode of another person's danger alarm mode when the number of incapacitated persons is one. When the number of incapacitated persons is one, the control device 101 outputs an intermittent alarm sound to the speaker 107 and causes the light emitting unit 111 to emit yellow light.

FIG. 17 is a diagram showing an alarm mode of another person's danger alarm mode when the number of incapacitated persons is two. When the number of incapacitated persons is two, the control device 101 outputs an intermittent alarm sound to the speaker 107 and causes the light emitting unit 111 to emit red light.

Typically, the control device 101 increases the intensity of the alarm as the number of incapacitated persons increases. As an example, the control device 101 increases the alarm sound from the speaker 107 as the number of incapacitated persons increases.

With reference to FIG. 15 again, in step S240, the control device 101 determines whether or not the press of the power / alarm release button 108 is detected. When the control device 101 determines that the press of the power / alarm release button 108 is detected (YES in step S240), the control device 101 switches the control to step S242. If not (NO in step S240), the controller 101 returns control to step S210. Preferably, the switching from step S240 to step S242 is performed after a certain period of time has elapsed after the control device 101 detects the pressing of the power / alarm release button 108.

In step S242, the control device 101 deletes the identification information of the source of the alarm signal from the incapacitated person information 123.

<I. Modification example>
In the above description, an example in which the alarm system 500 is composed of only the alarm device 100 has been described, but the alarm system 500 may further include a server. In this case, the alarm 100 is configured not only to be communicable with other alarms 100, but also to be communicable with the server.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown not by the above description but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1A to 1E worker, 100, 100A to 100E alarm, 101 control device, 102 non-volatile memory, 102A control program, 103 wireless communication module, 104 acceleration sensor, 106 timer, 107 speaker, 108 power / alarm release button, 109 Manual alarm button, 111 light emitting unit, 112 belt loop, 113 power supply, 114 tally key, 123 incapacitated person information, 124 alarm information, 150 abnormality detection unit, 152 communication unit, 154 count unit, 156 specific unit, 158 output control unit, 500 alarm system.

Claims (6)

It ’s an alarm
A communication unit for communicating with other alarms within the communicable range,
An alarm output unit for outputting an alarm and
It is provided with an abnormality detection unit for detecting an incapacitated state of the wearer of the alarm.
When the incapacitated state is detected by the abnormality detection unit, the alarm output unit outputs an alarm, and the communication unit outputs a first alarm signal indicating the incapacitated state within the communicable range. Send to other alarms in
The alarm device further emits the second alarm signal based on the second alarm signal that the communication unit receives from the other alarm device and indicates the incapacitated state of the wearer of the other alarm device. Equipped with a counting unit for counting the number of alarms
When the communication unit receives the second alarm signal from another alarm device, the alarm output unit outputs the warning in response to the count by the counting unit, the communication unit has the received An alarm device that transmits a second alarm signal to another alarm device within the communicable range. The alarm is further
A storage unit for storing alarm information associated with different alarm modes for each positive integer, and a storage unit.
Based on prior Symbol alarm information, and a specifying unit for specifying an alarm mode corresponding to the count number by the counting unit,
The alarm device according to claim 1, wherein the alarm output unit outputs an alarm in an alarm mode specified by the specific unit. The alarm mode of the alarm output unit when the abnormality detection unit detects the incapacitated state is different from the alarm mode of the alarm output unit when the communication unit receives the second alarm signal. The alarm according to 1 or 2. It ’s an alarm
A communication unit for communicating with other alarms within the communicable range,
An alarm output unit for outputting an alarm and
It is provided with an abnormality detection unit for detecting an incapacitated state of the wearer of the alarm.
When the incapacitated state is detected by the abnormality detection unit, the alarm output unit outputs an alarm, and the communication unit outputs a first alarm signal indicating the incapacitated state within the communicable range. Send to other alarms in
When the communication unit receives a second alarm signal indicating the incapacitated state of the wearer of the other alarm device from the other alarm device, the alarm output unit outputs an alarm and the communication unit outputs an alarm. , The received second alarm signal is transmitted to another alarm within the communicable range.
The abnormality detection unit detects the incapacitated state of the wearer when the time when the movement amount of the wearer is below the predetermined threshold exceeds the predetermined time.
The alarm further comprises a sensor for detecting the tilt angle of the alarm.
The predetermined threshold value when the tilt angle is included in the angle range indicating that the wearer is tilted includes the tilt angle within the angle range indicating that the wearer is standing. It is larger than the predetermined threshold value in the case of
When the tilt angle is included in the angle range indicating that the wearer is tilted, the tilt angle is included in the angle range indicating that the wearer is standing for the predetermined time. shorter than the predetermined time in case you are, alarm device. It ’s a control method for alarms.
The step of detecting the incapacity of the wearer of the alarm and
When the incapacitated state is detected, an alarm is output to the alarm output unit of the alarm device, and a first alarm signal indicating the incapacitated state is output to another alarm within the communicable range of the alarm device. Steps to send to the vessel and
The number of other alarms issuing the second alarm signal is counted based on the second alarm signal indicating the incapacitated state of the wearer of the other alarm device received by the alarm from the other alarm. Steps to do and
When said alarm device receives the second alarm signal from another alarm device, as well to output an alarm in response to the count number in the step of counting the alarm output unit, a second alarm signal to the received A control method comprising a step of transmitting the alarm to another alarm within the communicable range. It is a control program for alarms
The control program is applied to the alarm.
The step of detecting the incapacity of the wearer of the alarm and
When the incapacitated state is detected, an alarm is output to the alarm output unit of the alarm device, and a first alarm signal indicating the incapacitated state is output to another alarm within the communicable range of the alarm device. Steps to send to the vessel and
The number of other alarms issuing the second alarm signal is counted based on the second alarm signal indicating the incapacitated state of the wearer of the other alarm device received by the alarm from the other alarm. Steps to do and
When said alarm device receives the second alarm signal from another alarm device, as well to output an alarm in response to the count number in the step of counting the alarm output unit, a second alarm signal to the received A control program that executes a step of transmitting the alarm to another alarm within the communicable range.

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