JP6200223B2 - Hume food management system and management method - Google Patents

Description

  The present invention relates to a fume hood management system and a management method for managing a fume hood for locally exhausting toxic gas generated in an environment that is dangerous to workers' safety and products such as research facilities, factories, and hospitals. In particular, the present invention relates to a fume hood monitor for notifying an operator who uses a fume hood of information.

  In chemical experiments, gases and dusts that are harmful to the human body are often generated in the course of experimental work. A fume hood is one of devices that prevent the diffusion of these harmful substances into the room and prevent contamination of the human body. In general, the fume hood is provided with an enclosure (enclosure) with a sash door that can be opened and closed vertically or horizontally, and a laboratory worker can access the enclosure from the sash door. The enclosure is connected to an exhaust device that removes harmful substances so that workers working in the fume hood are not exposed to harmful gases, dusts, and the like (see Patent Document 1 and Non-Patent Document 1).

  FIG. 6 is a perspective view showing the appearance of the fume hood. The fume hood 1 is a sash 10 that can be opened and closed, an air volume control valve 11 for controlling the exhaust air volume, a human detection sensor 12 that detects whether a person is in the detection range, and an operator who uses the fume hood 1. A fume hood monitor 13 for notifying information and a vertical sash sensor 14 for detecting the opening degree of the sash 10 are provided.

  Information that can be displayed on the fume hood monitor 13 is an alarm and the surface wind speed of the sash opening. The fume hood monitor 13 has a display unit for displaying information such as the surface wind speed of the sash opening, an LED for the operator to identify the current state, and an emergency exhaust operation button for performing an emergency exhaust operation And a speaker for performing an alarm notification or a recovery notification by voice, a mute button for muting the voice, and a volume adjustment button for adjusting the volume. When an abnormality occurs, an alarm notification is made by LED error display, an alarm sound, and voice guidance so that the worker can be evacuated and correctly handled.

JP 2010-122939 A

Akio Matsumura, “Development of Environmental Management Support System for Research Facilities”, Savemation Review February 2004 issue, Yamatake Corporation, 2004

  Since the alarm sound and voice guidance are necessary for safety, the volume adjustment with the volume adjustment button can only lower the volume to the lowest level, and it cannot be set to mute. In order to stop the alarm sound and the voice guidance, it is necessary for the operator to press the mute button every time the alarm sound and the voice guidance are generated. However, at the time of adjustment before completion, since the fume hood is being adjusted, an alarm state often occurs even when there is no danger to the worker, and an alarm sound and voice guidance may occur frequently. In the conventional fume hood monitor, it is necessary to press the mute button every time an alarm sound and voice guidance are generated as described above.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a fume hood management system and a management method that can reduce the labor of the volume operation of the operator.

The fume hood management system of the present invention includes an operation means for adjusting a volume of a fume hood monitor for notifying an operator who uses the fume hood, and the fume hood monitor according to an operation of the operation means by the operator. Volume setting means for setting the sound output volume, sound output means for outputting sound from the fume hood monitor at the set volume when notification to the worker by voice is required, and the operation means When the mute setting is performed by the operation of m, the mute setting notification means for notifying the worker that the mute setting is set, and the mute period information indicating the effective period of the mute setting by the operation of the operation means are stored in advance. And when the elapsed time since the mute setting by the operation of the operation means exceeds the effective period, A mute setting canceling means for returning the sound output volume of the sound monitor to an initial setting value, a mute button for muting the sound of the fume hood monitor, and an output of the fume hood monitor according to an operation of the mute button by an operator And a means for stopping the sound using only the middle sound as a target for mute .

The fume hood management method of the present invention includes a volume setting step for setting the volume of the audio output of the fume hood monitor in accordance with the operation of the operating means by the worker who uses the fume hood, and a voice notification to the worker. The sound output step for outputting sound from the fume hood monitor at the set volume when necessary, and the sound mute setting for the operator when the sound mute setting is performed by operating the operation means. The mute setting notifying step for notifying the above and the storage means for storing in advance the mute period information indicating the effective period of the mute setting by operation of the operation means, and the mute setting by the operation of the operation means has been performed A mute setting release step for returning the sound output volume of the fume hood monitor to an initial set value when an elapsed time exceeds the valid period. And it is characterized in that it comprises a step of stopping the speech only the audio in the output of the fume hood monitor as a target for silencing in accordance with the operation of the mute button by the operator.

  According to the present invention, since the mute setting can be performed by operating the operation means, the operator can set so that no sound is output during the adjustment of the fume hood. Therefore, it is not necessary to press the mute button of the fume hood monitor each time a sound is output, so that the labor of the operator can be reduced and work efficiency can be improved. In the present invention, when the mute setting is performed by operating the operation means, the mute setting notification is made so that the operator can recognize that the mute setting is set.

  Further, in the present invention, when the elapsed time after the mute setting by the operation of the operation means exceeds the valid period, the sound output volume of the fume hood monitor is reset to the initial setting value, thereby Forgetting to return the mute setting can be prevented.

It is a block diagram which shows the structure of the fume hood management system which concerns on embodiment of this invention. It is a block diagram which shows the structure of the monitoring apparatus which concerns on embodiment of this invention. It is a front view which shows the external appearance of the fume hood monitor which concerns on embodiment of this invention. It is a block diagram which shows the structure of the fume hood monitor which concerns on embodiment of this invention. It is a flowchart explaining the volume adjustment operation | movement of the fume hood monitor which concerns on embodiment of this invention. It is a perspective view which shows the external appearance of a fume hood.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a fume hood management system according to an embodiment of the present invention. The fume hood management system collects a plurality of fume hoods 1, data representing an operating state from each fume hood 1, a plurality of controllers 2 that control the air volume control valve 11 of the fume hood 1, and the collected data. The monitoring device 3 that is a host device that manages each fume hood 1 and the network 4 that connects each controller 2 and the monitoring device 3 are provided. The fume hoods 1 shown in FIG. 1 are all connected to the same exhaust manifold 5 and exhausted, and an exhaust fan 6 is provided at the end of the exhaust manifold 5. The configuration of the fume hood 1 is as shown in FIG.

  Each controller 2 collects data indicating the operating state from the corresponding fume hood 1. The data collected from the fume hood 1 includes data of the instantaneous exhaust air volume, the sash opening, and the detection result (the presence / absence of the worker) of the human detection sensor 12.

  Each controller 2 controls the exhaust air volume based on data collected from the corresponding fume hood 1. In the case of the variable air volume (VAV) method that changes the exhaust air volume of the fume hood 1 according to the sash opening, each controller 2 opens the sash based on the opening of the sash 10 of the corresponding fume hood 1. The exhaust air volume is controlled by adjusting the air volume control valve 11 of the fume hood 1 so that the surface wind speed of the section becomes 0.5 m / s, for example.

Further, in the case of UBC (Usage Based Controls (registered trademark)) system that reduces the exhaust air volume when there is no worker, each controller 2 is connected to the corresponding fume hood 1 by a human detection sensor 12. It is confirmed whether or not there is an operator before 1, and the air volume control valve 11 is adjusted to increase the exhaust air volume when there is an operator, and when there is no operator, the exhaust air volume is reduced to a safe standby level.
Each controller 2 transmits data collected from the fume hood 1 to the monitoring device 3.

  FIG. 2 is a block diagram illustrating a configuration example of the monitoring device 3. The monitoring device 3 includes a data receiving unit 30 that receives data transmitted from each controller 2, a data storage unit 31 that stores data, information necessary for determination of alarm occurrence / recovery, and an operator of each fume hood 1 The calculation unit 32 that calculates the fume hood management information to be notified to the controller, the alarm notification unit 33 that outputs the alarm notification signal or the recovery notification signal, and the fume hood management information, the alarm notification signal or the recovery notification signal are transmitted to each controller 2. And a data transmission unit 34.

When the data receiving unit 30 of the monitoring device 3 receives data from each controller 2, the data receiving unit 30 stores the received data in the data storage unit 31.
Subsequently, based on the data received from each controller 2, the calculation unit 32 of the monitoring device 3 provides information necessary for alarm generation / recovery determination and fume hood management information to be notified to the worker of each fume hood 1. calculate. Information necessary for determining whether an alarm is generated / restored includes, for example, the total value of the instantaneous exhaust air volume of each fume hood 1. The fume hood management information includes, for example, the surface wind speed of the sash opening for each fume hood 1. The total value of the instantaneous exhaust air volume of each fume hood 1 may be the sum of the instantaneous exhaust air volume values included in the data received from each controller 2. The surface wind speed of the sash opening can be calculated for each fume hood 1 based on the sash opening included in the data received from each controller 2.

  Next, the alarm notification unit 33 of the monitoring device 3 compares the total value of the instantaneous exhaust air volume calculated by the calculation unit 32 with the maximum exhaust air volume that is the maximum value of the exhaust air volume assumed in advance. The maximum exhaust airflow is set to a value slightly below the limit value of the exhaust airflow that can be discharged by the exhaust system, and even if the total instantaneous exhaust airflow exceeds the maximum exhaust airflow, it will be immediately dangerous for the operator. It is set in advance to a value that should not be detected.

  The alarm notification unit 33 determines that an alarm has occurred when the total instantaneous exhaust air volume calculated by the calculation unit 32 exceeds the maximum exhaust air volume, and transmits an alarm notification signal to each controller 2 through the data transmission unit 34. Further, the alarm notification unit 33 determines that the alarm has been restored from the normal state to the normal state when the total value of the instantaneous exhaust air volume is equal to or less than the maximum exhaust air volume after the alarm notification to the controller 2, and through the data transmission unit 34. A recovery notification signal is transmitted to each controller 2. The alarm described in the present embodiment is an example, and the present invention is not limited to this.

The calculation unit 32 transmits the fume hood management information to each controller 2 through the data transmission unit 34. Of the fume hood management information, information calculated for each fume hood 1 is transmitted to the controller 2 that manages the corresponding fume hood 1.
Each controller 2 transmits the alarm notification signal, the recovery notification signal, and the fume hood management information sent from the monitoring device 3 to the corresponding fume hood monitor 13 of the fume hood 1.

  Next, the operation of the fume hood monitor 13 will be described. FIG. 3 is a front view showing the appearance of the fume hood monitor 13. The fume hood monitor 13 includes a display unit 130 for displaying fume hood management information, an LED 131 indicating that the fume hood 1 is in a normal state, an LED 132 for performing alarm notification or recovery notification, and emergency exhaust. LED 133 indicating presence, emergency exhaust operation button 134 for emergency exhaust operation, mute button 135 for muting sound, volume adjustment button 136 as an operation means for adjusting the volume, and alarm notification Or it has the speaker 137 for performing a recovery notification with an audio | voice.

  FIG. 4 is a block diagram illustrating a configuration example of the fume hood monitor 13. The fume hood monitor 13 includes a display unit 130, LEDs 131 to 133, an emergency exhaust operation button 134, a mute button 135, a volume adjustment button 136, a speaker 137, and a fume that receives fume hood management information from the monitoring device 3. Food management information reception unit 138, alarm reception unit 139 that receives an alarm notification signal or a recovery notification signal from the monitoring device 3, a storage unit 140 that stores information, an emergency exhaust operation button 134, a mute button 135, and a volume adjustment button An operation monitoring unit 141 that monitors the operation of 136, an information output unit 142 that outputs information using the display unit 130 and the LEDs 131 and 133, and an alarm output unit 143 that performs alarm notification or recovery notification using the LED 132 and the speaker 137. And the fume hood according to the operation of the emergency exhaust operation button 134. Performs control emergency exhaust operation of the exhaust valve 11, and a control unit 144 for setting the volume of the audio output of the fume hood monitor 13.

  The controller 144 constitutes a volume setting unit and a mute setting release unit. The alarm output unit 143 and the speaker 137 constitute an audio output unit. The control unit 144, the information output unit 142, and the LEDs 131 to 133 constitute a mute setting notification unit.

  When receiving an alarm notification signal from the monitoring device 3 via the controller 2, the alarm receiving unit 139 of the fume hood monitor 13 passes the alarm notification signal to the alarm output unit 143. The alarm output unit 143 that has received the alarm notification signal turns on the alarm notification LED 132 and outputs sound from the speaker 137 to notify the worker who uses the fume hood 1 that an alarm has occurred. When receiving the alarm notification signal, the information output unit 142 turns off the LED 131 for notifying the normal state.

  In addition, when receiving a recovery notification signal from the monitoring device 3, the alarm reception unit 139 passes the recovery notification signal to the alarm output unit 143. The alarm output unit 143 that has received the recovery notification signal turns off the LED 132 and outputs a sound from the speaker 137 to notify the worker who uses the fume hood 1 that the normal state has been recovered. When the information output unit 142 receives the recovery notification signal, the information output unit 142 turns on the LED 131.

  On the other hand, when the fume hood management information receiving unit 138 of the fume hood monitor 13 receives the fume hood management information from the monitoring device 3 via the controller 2, the fume hood management information is stored in the storage unit 140. The information output unit 142 causes the display unit 130 to display the fume hood management information (here, the surface wind speed information) stored in the storage unit 140.

  The operation monitoring unit 141 of the fume hood monitor 13 determines whether or not the emergency exhaust operation button 134 has been operated. When the emergency exhaust operation button 134 is operated, the control unit 144 controls the air volume control valve 11 of the fume hood 1 to perform emergency exhaust operation, and turns on the LED 133 through the information output unit 142 to perform emergency exhaust. Notify that there is.

  Next, the volume adjustment operation of the fume hood monitor 13 will be described with reference to FIG. The operation monitoring unit 141 of the fume hood monitor 13 determines whether or not the mute button 135 or the volume adjustment button 136 has been operated (step S1 in FIG. 5). When volume adjustment button 136 is operated (YES in step S1), control unit 144 sets the volume of the alarm sound and voice guidance according to this operation (step S2). The volume can be set, for example, in 6 steps (0 to 5), the initial setting value is 3, the minimum value is 0, and the maximum value is 5. Each time the volume adjustment button 136 is operated, the volume is switched in the order of 3 → 2 → 1 → 0 → 5 → 4 → 3 →. For example, when the alarm sound and the voice guidance are to be silenced for the adjustment work of the fume hood 1, the operator may set the volume to 0.

  When the volume set by operating volume control button 136 is 0 (YES in step S3), control unit 144 turns on three LEDs 131-133 in order through information output unit 142 and alarm output unit 143. Thus, the operator is notified that the mute setting is set (step S4). The notifications by the LEDs 131 to 133 may be switched on and off in the order of, for example, LED 131 lighting → LED 131 off → LED 132 lighting → LED 132 off → LED 133 lighting → LED 133 off → LED 131 on →.

  When the alarm output unit 143 of the fume hood monitor 13 receives the alarm notification signal from the monitoring device 3 (YES in step S5), the alarm output unit 143 outputs the sound from the speaker 137 at the volume set by the control unit 144. The person is notified that an alarm has occurred (step S6). In addition, when the alarm output unit 143 receives the recovery notification signal from the monitoring device 3 (YES in step S7), the alarm output unit 143 normally causes the worker to output sound from the speaker 137 at the volume set by the control unit 144. It is notified that the state has been restored (step S8).

  When mute button 135 is operated (YES in step S9), control unit 144 instructs alarm output unit 143 to stop the sound currently being output (step S10). In the case of the mute setting by the volume adjustment button 136, the volume remains 0 until the setting is released. However, in the case of mute by the operation of the mute button 135, only the sound being output is targeted for mute. . Therefore, in order to stop the alarm sound and the voice guidance by the mute button 135, the operator needs to press the mute button 135 every time an alarm is generated.

  Next, in the storage unit 140 of the fume hood monitor 13, mute period information indicating a valid period of mute setting by the volume adjustment button 136 (for example, 1 hour, 1 day, 1 week, 1 month, 1 year, etc.) is preset. Has been. When setting the mute period information, a connector (not shown) provided on the fume hood monitor 13 is used to connect the fume hood monitor 13 to a tool such as a personal computer for connection to the network. Thus, the mute period information may be set from the tool to the fume hood monitor 13. Thereby, mute period information can be set for each individual fume hood monitor. Alternatively, in a state where each fume hood monitor 13 is connected to the network, for example, the silencing period information is collectively set from the monitoring device 3 to the fume hood monitor 13 of each fume hood 1 belonging to the same exhaust system. May be.

When the elapsed time after the mute setting by the volume adjustment button 136 has exceeded the effective period specified by the mute period information (YES in step S11), the control unit 144 cancels the mute setting and issues an alarm sound. The volume of the voice guidance is returned to the initial setting value, and the lighting of the LEDs 131 to 133 is canceled by the process of step S4, and only the LED 131 is turned on (step S12).
Thus, until the operation of the fume hood management system stops (YES in step S13), the processes of steps S1 to S12 are repeatedly executed.

  As described above, in this embodiment, since the mute setting can be performed by the volume adjustment button 136, the operator can set the alarm sound and the voice guidance not to occur during the adjustment of the fume hood 1. . Therefore, it is not necessary to press the mute button 135 each time an alarm sound and voice guidance are generated, so that the labor of the operator can be reduced and work efficiency can be improved.

  Further, in the present embodiment, when the mute setting is made by the volume adjustment button 136, it is possible to notify the operator that the mute setting is set by turning on the LEDs 131 to 133 in order. Furthermore, in the present embodiment, the mute setting is automatically canceled when the elapsed time after the mute setting by the volume adjustment button 136 is performed exceeds the valid period. Forgetting to return can be prevented.

  In this embodiment, the sound volume is set for each fume hood monitor. However, the present invention is not limited to this, and each fume hood 1 belonging to the same exhaust system from an external device (for example, the monitoring device 3). The volume may be collectively set for the fume hood monitor 13.

  In the present embodiment, each of the controller 2, the monitoring device 3, and the fume hood monitor 13 can be realized by a computer having a CPU, a memory, and an interface, and a program for controlling these hardware resources. The CPU of each device of the controller 2, the monitoring device 3, and the fume hood monitor 13 executes the processing described in the present embodiment in accordance with a program stored in the memory of each device.

  The present invention can be applied to a fume hood management system that manages a fume hood and a fume hood monitor.

  DESCRIPTION OF SYMBOLS 1 ... Fume hood, 2 ... Controller, 3 ... Monitoring apparatus, 4 ... Network, 5 ... Exhaust manifold, 6 ... Exhaust fan, 10 ... Sash, 11 ... Air volume control valve, 12 ... Human detection sensor, 13 ... Fume hood Monitor, 14 ... Vertical sash sensor, 30 ... Data receiving unit, 31 ... Data storage unit, 32 ... Calculation unit, 33 ... Alarm notification unit, 34 ... Data transmission unit, 130 ... Display unit, 131-133 ... LED, 134 ... Emergency exhaust operation button, 135 ... mute button, 136 ... volume adjustment button, 137 ... speaker, 138 ... fume hood management information receiving unit, 139 ... alarm receiving unit, 140 ... storage unit, 141 ... operation monitoring unit, 142 ... information output Part, 143 ... alarm output part, 144 ... control part.

Claims (2)

Operation means for adjusting the volume of the fume hood monitor for notifying the worker who uses the fume hood, and
Volume setting means for setting the volume of audio output of the fume hood monitor in accordance with the operation of the operation means by an operator;
A voice output means for outputting voice from the fume hood monitor at the set volume when notification by voice to the operator is required;
A mute setting notification means for notifying the operator that the mute setting is set when the mute setting is performed by the operation of the operation means ;
Storage means for preliminarily storing mute period information indicating the effective period of mute setting by operation of the operation means;
A mute setting release unit that returns the sound output volume of the fume hood monitor to an initial set value when an elapsed time after the mute setting by the operation of the operation unit exceeds the valid period;
A mute button for muting the sound of the fume hood monitor;
A fume hood management system comprising: means for stopping the sound only for the sound being output from the fume hood monitor in response to an operation of the mute button by an operator . A volume setting step for setting the volume of the audio output of the fume hood monitor according to the operation of the operation means by the operator using the fume hood;
An audio output step for outputting audio from the fume hood monitor at the set volume when notification by voice to the operator is required;
A mute setting notification step for notifying the operator that mute is set when mute is set by operation of the operation means ;
With reference to a storage unit that stores in advance silencing period information indicating the effective period of the silencing setting by the operation of the operation unit, and when the elapsed time since the silencing setting by the operation of the operating unit has exceeded the effective period And a mute setting release step for returning the sound output volume of the fume hood monitor to an initial setting value,
A fume hood management method, comprising: a step of muting only the sound being output from the fume hood monitor in response to an operation of a mute button by an operator, and stopping the sound .

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