JP2010122939A - Fume hood monitor and fume hood management information display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To notify information that should be notified to a worker by a display part of a limited area. <P>SOLUTION: This fume hood monitor 13 includes: a fume hood management information receiving part 137 for receiving fume hood management information about a fume hood from a host device for managing the fume hood; a storing part 139 for storing the fume hood management information; an information outputting part 141 for displaying at least one piece of information of information included in the fume hood management information, and an operation monitoring part 140 for determining whether a display switching operation is performed. The information outputting part 141 switches the currently displayed information to different information included in the fume hood management information to display the different information when it is determined that the display switching operation is performed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an environmental control system for controlling the exhaust air volume of a fume hood that locally exhausts toxic gas generated in an environment that involves danger to workers' safety or products such as research facilities, factories, and hospitals. In particular, the present invention relates to a fume hood monitor and a fume hood management information display method for displaying fume hood management information to be notified to an operator who uses the fume hood.

  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. To prevent workers working in the fume hood from being exposed to harmful gases, dust, etc., the enclosure is connected to an exhaust system that removes harmful substances.

FIG. 8 is a perspective view showing the appearance of the fume hood. The fume hood 1 has information on the sash 10 that can be opened and closed, an exhaust valve 11 for controlling the amount of exhaust air, a human detection sensor 12 that detects whether there is a person in the detection range, and an operator who uses the fume hood 1. Is provided with a fume hood monitor 13 for notifying the vehicle and a vertical sash sensor 14 for detecting the opening of the sash 10.
Information that can be displayed on a conventional fume hood monitor is an alarm and the surface wind speed of the sash opening. The fume hood monitor is provided with an LED, and an alarm state / normal state is notified by turning on / off the LED. Further, the surface wind speed is notified by numerical display.

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

  Since the fume hood monitor is installed on the sash frame in front of the fume hood, the size is limited and the area that can be displayed is limited, and only the alarm and wind speed information is transmitted to the worker who uses the fume hood. I could not. There are other information that should be notified to the operator, such as usage time, dead time, number of alarms, etc., but it is difficult to secure an area on the fume hood monitor to display all information simultaneously. For this reason, all information that the operator should know could not be confirmed on the fume hood monitor.

  The present invention has been made to solve the above-described problems, and provides a fume hood monitor and a fume hood management information display method capable of notifying an operator of information to be notified by a display unit having a limited area. For the purpose.

The fume hood monitor of the present invention comprises at least one of fume hood management information receiving means for receiving fume hood management information related to the fume hood from a host device that manages the fume hood, and information included in the fume hood management information. An information output means for displaying; and an operation monitoring means for determining whether or not a display switching operation has been performed. The information output means displays information being displayed when it is determined that the display switching operation has been performed. Switching to another information included in the fume hood management information is displayed.
In addition, in one configuration example of the fume hood monitor of the present invention, when the next display switching operation is not performed within a predetermined time from the immediately preceding display switching operation, the information being displayed is included in the fume hood management information. Initial display information switching means for switching to and displaying predetermined initial display information is provided.

  The fume hood management information display method of the present invention includes a fume hood management information reception procedure for receiving fume hood management information related to the fume hood from a host device that manages the fume hood, and at least of the information included in the fume hood management information A display procedure for displaying one, a determination procedure for determining whether or not a display switching operation has been performed, and another information included in the fume hood management information that includes information being displayed each time the display switching operation is performed And a display switching procedure for switching to display.

  According to the present invention, since the fume hood management information to be displayed can be switched in accordance with the display switching operation, various fume hood management information can be displayed on the display unit having a limited area of the fume hood monitor. It becomes possible. As a result, in the present invention, when an operator uses a fume hood, it is possible to promote awareness of proper use, reduce dead time as much as possible, and consider energy saving, and improve proper operation and safety. , Can promote energy saving.

  In the present invention, when there is no next display switching operation within a predetermined time from the previous display switching operation, the display is switched to the display of the initial display information. It is possible to prevent the user from forgetting to return to the initial display information and display the initial display information as long as possible.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an environmental control system according to an embodiment of the present invention. The environmental control system collects a plurality of fume hoods 1, data representing an operating state from each fume hood 1, a plurality of exhaust valve controllers 2 that control the exhaust valves 11 of the fume hood 1, and the collected data. A monitoring device 3 that is a host device that manages each fume hood 1 and a network 4 that connects each exhaust valve controller 2 to the monitoring device 3. 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.

  Each exhaust valve 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 exhaust valve controller 2 controls the exhaust air volume based on data collected from the corresponding fume hood 1. In the case of variable air volume (VAV) method that changes the exhaust air volume of the fume hood 1 according to the sash opening, each exhaust valve controller 2 is based on the opening of the sash 5 of the corresponding fume hood 1. The exhaust air volume is controlled by adjusting the exhaust valve 11 of the fume hood 1 so that the surface wind speed of the sash opening is, for example, 0.5 m / s.

Further, in the case of UBC (Usage Based Controls (registered trademark)) system that reduces the exhaust air volume when there is no worker, each exhaust valve controller 2 is a human detection sensor (not shown) installed in the corresponding fume hood 1. ) To check whether there is an operator in front of the fume hood 1, and when there is an operator, adjust the exhaust valve 11 to increase the exhaust air volume, and when there is no operator, reduce the exhaust air volume to a safe standby level. .
Each exhaust valve 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 exhaust valve controller 2, a data storage unit 31 that stores data, information necessary for determination of alarm occurrence / recovery, and each fume hood 1. An operation unit 32 that calculates fume hood management information to be notified to the worker, an alarm notification unit 33 that outputs an alarm notification signal or a recovery notification signal, and a fume hood management information, an alarm notification signal or a recovery notification signal for each exhaust valve And a data transmission unit 34 for transmission to the controller 2.

FIG. 3 is a flowchart showing the operation of the monitoring device 3. When receiving data from each exhaust valve controller 2 (YES in step S100 in FIG. 3), the data receiving unit 30 of the monitoring device 3 stores the received data in the data storage unit 31 (step S101).
Subsequently, based on the data received from each exhaust valve controller 2, the calculation unit 32 of the monitoring device 3 provides information necessary for the determination of alarm generation / recovery and the fume hood management to be notified to the operator of each fume hood 1. Information is calculated (step S102).

  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 usage time for each fume hood 1, the dead time for each fume hood 1, the absence rate for each fume hood 1, and the number of alarm occurrences. .

  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 exhaust valve 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 exhaust valve controller 2. The usage time is the time when the sash 10 is open and the worker is in front of the fume hood 1, and is calculated for each fume hood 1 based on the sash opening and the detection result of the human detection sensor 12. Can do. The dead time is the time when there is no worker in front of the fume hood 1 even though the sash 10 is open, and is calculated for each fume hood 1 based on the sash opening and the detection result of the human detection sensor 12. can do. The absent rate is a value obtained by dividing the dead time by the time when the sash 10 is open, and can be calculated for each fume hood 1 based on the sash opening and the detection result of the human detection sensor 12.

  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 (step S103). The maximum exhaust air volume is set to a value slightly below the limit value of the exhaust air volume that can be discharged by the exhaust system 7, and even if the total instantaneous exhaust air volume exceeds the maximum exhaust air volume, it is immediately dangerous for the operator. It is set in advance to a value that does not.

  The alarm notification unit 33 determines that an alarm has occurred when the total value of the instantaneous exhaust air volume calculated by the calculation unit 32 exceeds the maximum exhaust air volume (YES in step S103), and the exhaust valve controller 2 through the data transmission unit 34. An alarm notification signal is transmitted to (step S104). In addition, the alarm notifying unit 33 has recovered from the alarm occurrence state to the normal state when the total value of the instantaneous exhaust air volume becomes equal to or less than the maximum exhaust air volume after the alarm notification to the exhaust valve controller 2 (YES in step S105). Then, a recovery notification signal is transmitted to each exhaust valve controller 2 through the data transmission unit 34 (step S106). The alarm described in the present embodiment is an example, and the present invention is not limited to this.

  If it is determined in step S103 that an alarm has been generated, the calculation unit 32 increases the number of alarm occurrences by 1, and if the alarm has not occurred or has returned to a normal state, the current alarm occurrence number is increased. Maintain (step S107).

And the calculating part 32 is a fume containing the surface wind speed of the sash opening part for every fume hood 1, the use time for every fume hood 1, the dead time for every fume hood 1, the absent rate for every fume hood 1, and the frequency | count of alarm generation. The hood management information is transmitted to each exhaust valve controller 2 through the data transmission unit 34 (step S108). Each piece of information calculated for each fume hood 1 in the fume hood management information is transmitted to the exhaust valve controller 2 that manages the corresponding fume hood 1.
Thus, the processing of steps S100 to S108 is repeatedly executed until the operation of the environmental control system stops (YES in step S109).

  Each exhaust valve 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. 4 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 identification LED 131 for identifying information currently displayed by the operator, and an emergency exhaust operation button 132 for performing emergency exhaust operation. , Mute button 133 for muting sound, display switching button 134 for switching display of fume hood management information, alarm notification LED 135 for performing alarm notification or recovery notification, and alarm notification or recovery notification by voice And a speaker 136 for performing.

  FIG. 5 is a block diagram illustrating a configuration example of the fume hood monitor 13. The fume hood monitor 13 includes a display unit 130, an identification LED 131, an emergency exhaust operation button 132, a mute button 133, a display switching button 134, an alarm notification LED 135, a speaker 136, and a fume hood management information from the monitoring device 3. A fume hood management information receiving unit 137, an alarm receiving unit 138 that receives an alarm notification signal or a recovery notification signal from the monitoring device 3, a storage unit 139 that stores information, an emergency exhaust operation button 132, and a mute button 133. An operation monitoring unit 140 that monitors the operation of the display switching button 134, an information output unit 141 that outputs information using the display unit 130 and the identification LED 131, an alarm notification or a recovery notification using the alarm notification LED 135 and the speaker 136. The alarm output unit 142 to perform and the display switch button 134 just before Depending on the operation of the initial display information switching unit 143 that switches the displayed information to the initial display information and displays it when there is no operation of the next display switching button 134 within a certain time from the operation, and the emergency exhaust operation button 132 And a control unit 144 that controls the exhaust valve 11 of the fume hood 1 and performs emergency exhaust operation or the like.

  FIG. 6 is a flowchart showing the operation of the fume hood monitor 13. When the alarm receiver 138 of the fume hood monitor 13 receives an alarm notification signal from the monitoring device 3 via the exhaust valve controller 2 (YES in step S200 in FIG. 6), the alarm receiver 138 passes the alarm notification signal to the alarm output unit 142. The alarm output unit 142 that has received the alarm notification signal turns on the alarm notification LED 135 and outputs sound from the speaker 136, thereby notifying the worker who uses the fume hood 1 that an alarm has occurred (step S201). .

  Further, when receiving a recovery notification signal from the monitoring device 3 (YES in step S200), the alarm receiving unit 138 passes the recovery notification signal to the alarm output unit 142. The alarm output unit 142 that has received the recovery notification signal turns off the alarm notification LED 135 and outputs sound from the speaker 136, thereby notifying the worker who uses the fume hood 1 that the normal state has been recovered (step S201). ).

  On the other hand, when the fume hood management information receiving unit 137 of the fume hood monitor 13 receives the fume hood management information from the monitoring device 3 via the exhaust valve controller 2 (YES in step S202), the fume hood management information is stored in the storage unit. It is stored in 139 (step S203).

  The information output unit 141 of the fume hood monitor 13 causes the display unit 130 to display information previously set as initial display information among the fume hood management information stored in the storage unit 139, and corresponds to the initial display information. The identification LED 131 is turned on (step S204). In the example of FIG. 4, the surface wind speed information is the initial display information, and the identification LED 131 corresponding to the surface wind speed is lit.

  Next, the operation monitoring unit 140 of the fume hood monitor 13 determines whether or not the display switching button 134 has been operated (step S205). When it is determined in step S205 that the display switching button 134 has been operated, the information output unit 141 displays the information currently displayed on the display unit 130 as the second display order of the fume hood management information. And the identification LED 131 corresponding to the information after the switching is turned on (step S206).

  Subsequently, the operation monitoring unit 140 determines whether or not the display switching button 134 has been operated again within a certain time (for example, about 15 seconds) from the previous operation of the display switching button 134 (step S207). If it is determined in step S207 that the display switching button 134 has been operated within a predetermined time, the information output unit 141 sets the information currently displayed on the display unit 130 to the third display order among the fume hood management information. The display is switched to the displayed information, and the identification LED 131 corresponding to the information after the switching is turned on (step S206).

  Thus, every time the display switching button 134 is operated, the display of the fume hood management information is switched. In the example of FIG. 7, the value of the absent rate is displayed as the fume hood management information, and the identification LED 131 corresponding to the absent rate is lit. In the present embodiment, among the fume hood management information, the display order of surface wind speed is No. 1 (initial display), the display order of usage time is No. 2, the display order of dead time is No. 3, and the display order of absent rate is No. 4 and the display order of the number of alarm occurrences is No. 5. Therefore, every time the display switching button 134 is operated, the display is switched in the order of surface wind speed → usage time → dead time → absence rate → number of alarm occurrences → surface wind speed →. This display order is an example and is not limited to this. For example, the dead time may be used as the initial display information.

Further, the initial display information switching unit 143 displays the information currently displayed on the display unit 130 as the initial display information when the display switching button 134 is not re-operated within a predetermined time from the previous operation of the display switching button 134. The identification LED 131 corresponding to the initial display information is turned on (step S208).
In this way, the processing of steps S200 to S208 is repeatedly executed until the operation of the environmental control system is stopped (YES in step S209).

  As described above, in the present embodiment, when displaying the fume hood management information on the fume hood monitor, the fume hood management information to be displayed can be switched according to the operation of the display switching button. Thereby, in this Embodiment, it becomes possible to display various fume hood management information with the display part of the limited area of a fume hood monitor.

  In order to manage the fume hood, it is the safety of the workers that must be maintained, but it is also necessary to consider energy saving. In particular, if the sash is open when not in use, wasteful energy will be used. Therefore, notifying workers of fume hood management information such as dead time is effective for energy saving, but conventional fume hood monitors only convey warning and surface wind speed information to workers due to the problem of displayable area. I could not. On the other hand, in the present embodiment, information other than the alarm and the surface wind speed can be transmitted to the worker, so that the current operation status of the fume hood can be transmitted to the worker. As a result, when the worker uses the fume hood, it is possible to promote awareness of proper use, reducing dead time as much as possible, and considering energy saving. Proper operation, improvement of safety, promotion of energy saving Can be realized.

  Also, in this embodiment, when there is no re-operation of the display switching button within a certain time from the previous operation of the display switching button, the display is switched to the display of the initial display information. It is possible to prevent the user from forgetting to return to the initial display information, and the initial display information can be displayed for as long as possible.

  In the present embodiment, each of the exhaust valve 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. . Each CPU of the exhaust valve 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.

  The present invention can be applied to a fume hood monitor that displays fume hood management information to be notified to an operator who uses the fume hood.

It is a block diagram which shows the structure of the environmental control 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 flowchart which shows operation | movement 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 which shows operation | movement of the fume hood monitor which concerns on embodiment of this invention. It is a front view which shows the example of a display 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.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Hume hood, 2 ... Exhaust valve controller, 3 ... Monitoring device, 4 ... Network, 5 ... Exhaust manifold, 6 ... Exhaust fan, 10 ... Sash, 11 ... Exhaust valve, 12 ... Human detection sensor, 13 ... Hume 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 ... identification LED, 132 ... Emergency exhaust operation button 133 ... Mute button 134 ... Display switch button 135 ... Alarm notification LED 136 ... Speaker 137 ... Fume food management information receiving unit 138 ... Alarm receiving unit 139 ... Storage unit 140 ... Operation monitoring 141, information output unit, 142 ... alarm output unit, 143 ... initial display information switching unit, 144 ... control unit.

Claims (4)

A fume hood management information receiving means for receiving fume hood management information related to the fume hood from a host device that manages the fume hood;
Information output means for displaying at least one of information included in the fume food management information;
Operation monitoring means for determining whether a display switching operation has been performed,
The information output means, when it is determined that the display switching operation has been performed, switches the displayed information to another information included in the fume hood management information and displays the information. The fume hood monitor according to claim 1,
Furthermore, when there is no next display switching operation within a certain time from the previous display switching operation, the initial display information switching is performed by switching the displayed information to the predetermined initial display information included in the fume hood management information. A fume hood monitor comprising means. A fume hood management information receiving procedure for receiving fume hood management information related to the fume hood from a host device that manages the fume hood;
A display procedure for displaying at least one of the information included in the fume food management information;
A determination procedure for determining whether a display switching operation has been performed;
A fume hood management information display method, comprising: a display switching procedure for switching the displayed information to another information included in the fume hood management information each time the display switching operation is performed. The fume hood management information display method according to claim 3,
Furthermore, when there is no next display switching operation within a certain time from the previous display switching operation, the initial display information switching is performed by switching the displayed information to the predetermined initial display information included in the fume hood management information. A fume food management information display method comprising a procedure.

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