JP7420074B2 - communication network - Google Patents

Description

The present invention relates to a communication network used for communication in a monitored person monitoring support system.

In recent years, with the onset of a super-aging society, research and development of technologies that complement the work of the nursing industry, care industry, etc. are progressing. One such technology is to monitor whether or not a predetermined event (for example, a fall) has occurred in a person to be monitored (for example, a care recipient in a nursing care facility), and to detect whether or not a predetermined event has occurred. There is a technology to support monitoring of the monitored person, which notifies the supervisor (for example, a caregiver) if the monitored person does so. When the monitor receives the notification, the monitor rushes to the person being monitored and responds to the event that has occurred. According to this monitored person monitoring support technology, the supervisor does not have to constantly watch over the monitored person, so the burden on the supervisor can be reduced and it is possible to cope with the shortage of supervisors.

For example, Patent Document 1 discloses a nurse call system as a monitoring support technology for a person to be monitored. According to this nurse call system, a mobile terminal can communicate not only with the nurse call handset and nurse call base unit of the group to which it belongs, but also with the nurse call handset and nurse call base machine of other groups. It can be implemented with simple operations.

A system may be newly introduced to a certain facility when a monitored person monitoring support system has already been introduced to that facility, and vice versa. A VLAN (Virtual Local Area Network) may be employed for communication in each of these systems. Since VLANs can utilize existing physical networks, they can reduce installation costs.

VLANs share physical networks. Therefore, when a VLAN assigned to the communication of the monitored person monitoring support system and a VLAN assigned to a system other than this system are set, the communication of the monitored person monitoring support system can be used to communicate with another system. An unexpected problem may occur in the communication of the monitored person monitoring support system, or an unexpected problem may occur in the communication of the monitored person monitoring support system due to the communication of another system.

Japanese Patent Application Publication No. 2015-61227

An object of the present invention is to provide a communication network that can appropriately operate a VLAN assigned to communication of a monitored person monitoring support system and a VLAN assigned to a system other than this system. .

In order to achieve the above-mentioned object, a communication network reflecting one aspect of the present invention is assigned to each of a plurality of monitored persons, and detects the occurrence of a predetermined event for the assigned monitored persons. For communication of a monitored person monitoring support system comprising a plurality of sensor devices, a plurality of terminal devices carried by a plurality of supervisors, and a server device capable of communicating with the plurality of sensor devices and the plurality of terminal devices. A communication network to be used includes a communication control device capable of setting a VLAN, a first VLAN set by the communication control device and assigned to communication of the monitored person monitoring support system, and the communication a second VLAN set by a control device and assigned to communication between the monitored person monitoring support system and another system; In this case, it is possible to set one side to give priority to communication over the other.

The advantages and features provided by one or more embodiments of the invention will be better understood from the detailed description and accompanying drawings provided below. The detailed description and accompanying drawings are given by way of example only and are not intended as a limiting definition of the invention.

FIG. 1 is an explanatory diagram illustrating the configuration of a communication system according to an embodiment. It is an explanatory view explaining an example of a setting screen of priority control. FIG. 2 is a functional block diagram of an L2 switch. 12 is a flowchart illustrating the operation of the L2 switch when priority control is set for communication on the second VLAN.

Hereinafter, one or more embodiments of the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the disclosed embodiments.

In each figure, components given the same reference numerals indicate the same components, and descriptions of the components that have already been described will be omitted. In this specification, a generic name is indicated by a reference numeral omitting a suffix (for example, sensor device SU), and an individual component is indicated by a reference numeral with a suffix (for example, sensor device SU). -1).

The monitored person monitoring support system according to the embodiment is a system that monitors a monitored person who is a monitoring target to be monitored (in other words, a monitored person who is a monitoring target to be watched) using a plurality of devices, and a terminal and a monitored person monitoring support device that is communicably connected to the terminal device, detects a predetermined event related to the monitored person, and notifies the terminal device of the event. The monitored person monitoring support device may be integrally configured as one device, but in this specification, the monitored person monitoring support device can communicate with a sensor device and each of the sensor device and the terminal device. By providing a management server device connected to the , the two types of devices are separately configured. The sensor device detects the predetermined event related to the monitored person and notifies (reports, transmits) the predetermined event to the management server device. Upon receiving the notification from the sensor device, the management server device manages the event for which the notification was received, and also re-notifies the event to a predetermined terminal device associated with the sensor device. Send. Although the terminal device may be one type of device, in this specification, the terminal device is two types of devices, a fixed terminal device and a mobile terminal device. The main difference between these fixed terminal devices and mobile terminal devices is that fixed terminal devices are operated in a fixed manner, and mobile terminal devices are carried and operated by a supervisor (user) such as a nurse or caregiver. It is. Since these fixed terminal devices and mobile terminal devices are substantially the same, the mobile terminal device will mainly be explained below.

FIG. 1 is an explanatory diagram illustrating the configuration of a communication system according to an embodiment. This communication system includes an L2 switch LS, a first VLAN, and a second VLAN, and is used for communication of the monitored person monitoring support system MS and communication of a system AS different from this system. be done.

The monitored person monitoring support system MS includes one or more sensor devices SU (SU-1 to SU-4), a management server device SV, a fixed terminal device SP, and one or more mobile terminal devices TA (TA-4). 1, TA-2) and a private branch exchange (PBX, Private Branch eXchange) CX, which communicate via wired or wireless networks (networks, communication lines) such as LAN (Local Area Network). possible to be connected. The network NW may include relay devices such as repeaters, bridges, and routers that relay communication signals. In the example shown in FIG. 1, the plurality of sensor devices SU-1 to SU-4, the management server device SV, the fixed terminal device SP, the plurality of mobile terminal devices TA-1 and TA-2, and the private branch exchange CX are connected to the L2 switch They are communicably connected to each other by a mixed wired and wireless LAN (for example, a LAN according to the IEEE 802.11 standard) NW including an LS and an access point AP. More specifically, a plurality of sensor devices SU-1 to SU-4, a management server device SV, a fixed terminal device SP, and a private branch exchange CX are connected to an L2 switch LS, and a plurality of mobile terminal devices TA-1 and TA-2 are connected to an L2 switch LS. is connected to the L2 switch LS via the access point AP. The network NW constitutes a so-called intranet by using a group of Internet protocols such as TCP (Transmission Control Protocol) and IP (Internet Protocol). The private branch exchange CX is connected to the telephone TL via the public telephone network PN.

The monitored person monitoring support system MS is arranged at an appropriate location depending on the monitored person Ob. The monitored person Ob is, for example, a person who requires nursing care due to illness or injury, a person who requires nursing care due to a decline in physical ability, a person who lives alone, or the like. In particular, from the perspective of enabling early detection and early response, the person to be monitored Ob should be someone who needs to be detected when a predetermined inconvenient event such as an abnormal state occurs to that person. preferable. Therefore, the monitored person monitoring support system MS is suitably installed in a building such as a hospital, a welfare facility for the elderly, or a residential unit, depending on the type of the monitored person Ob. In the example shown in FIG. 1, the monitored person monitoring support system MS is installed in a building of a nursing care facility that includes multiple rooms RM in which multiple monitored persons Ob reside, and multiple rooms such as a nurse's station. .

The sensor device SU is equipped with a communication function to communicate with other devices SV, SP, and TA via the network NW, and detects a predetermined event related to the monitored person Ob and sends the detected event to the management server device SV. This is a device that notifies the terminal devices SP and TA, performs voice calls with the terminal devices SP and TA, generates images including moving images, and distributes the moving images to the terminal devices SP and TA. The predetermined event preferably includes an event that requires handling.

An example of a method for detecting an event is a method using a video. The sensor device SU shoots a video of the person to be monitored Ob, and based on this video, detects that a predetermined event (for example, getting up, leaving the bed, falling down) has occurred in the person to be monitored Ob. Specifically, the sensor device SU detects a human region of the monitored person Ob from each frame of a video taken of the monitored person Ob, and determines the posture of the monitored person Ob (for example, standing position) based on the aspect ratio of the detected human region. , sitting position, lying down, etc.), the position of the detected person area is detected, and based on these determinations and the detected posture and position of the monitored person Ob, it is determined whether the person Ob is getting up, leaving the bed, or falling down.

In FIG. 1, four sensor devices SU-1 to SU-4 are shown as an example, and the sensor device SU-1 is located in the living room RM- The sensor device SU-2 is installed in the living room RM-2 of Mr. B Ob-2, who is one of the monitored persons Ob, and the sensor device SU-3 is installed in the living room RM-2 of Mr. B Ob-2, who is one of the monitored persons Ob. The sensor device SU-4 is installed in the room RM-3 of Mr. C Ob-3, and the sensor device SU-4 is installed in the room RM-4 of Mr. D Ob-4, who is one of the monitored persons Ob.

The management server device SV is equipped with a communication function to communicate with other devices SU, SP, and TA via the network NW, and when it receives a notification of a predetermined event related to the monitored person Ob from the sensor device SU, the monitored person This is a device that manages information regarding monitoring of Ob (monitoring information). When the management server device SV receives the first event notification communication signal as a notification of the event from the sensor device SU, the management server device SV performs the above-mentioned monitoring related to the monitored person Ob based on each piece of information contained in the first event notification communication signal. A predetermined terminal device that stores (records) monitoring information and transmits a communication signal (second event notification communication signal) containing the monitoring information regarding monitoring of the monitored person Ob to a predetermined terminal device that is associated with the sensor device SU in advance. Send to SP and TA. For this purpose, the management server device SV sends the sensor ID that is the sender and the notification destination indicating the notification destination (re-notification destination, re-notification destination, transmission destination) of the first event notification communication signal etc. transmitted from the sensor device SU. The correspondence relationship (notification destination correspondence relationship) with the terminal ID that is the destination (re-notification destination) and its communication address are stored. The terminal ID (terminal device identifier) is an identifier for specifying and identifying the terminal devices SP and TA. Then, the management server device SV provides data in response to a request from a client (in this embodiment, a fixed terminal device SP, a mobile terminal device TA, etc.). Such a management server device SV can be configured by, for example, a computer with a communication function.

The fixed terminal device SP is a device that functions as a user interface (UI) of the monitored person monitoring support system MS. In order to achieve this function, the fixed terminal device SP has a communication function to communicate with other devices SU, SV, and TA via the network NW, a display function to display predetermined information, and a display function to display predetermined instructions and data. It has an input function, etc., and can input predetermined instructions and data given to the management server device SV and mobile terminal device TA, and can display monitoring information obtained by the sensor device SU. Such a fixed terminal device SP can be configured by, for example, a computer with a communication function.

The mobile terminal device TA is carried by the supervisor NS. The mobile terminal device TA has a communication function for communicating with other devices SV, SP, and SU via the network NW, a display function for displaying predetermined information, an input function for inputting predetermined instructions and data, and a voice call function. It has a telephone call function, etc. to input predetermined instructions and data given to the management server device SV and sensor device SU, and monitor information (including videos) obtained by the sensor device SU based on notifications from the management server device SV. It is a device for displaying information, and for responding to nurse calls and speaking to them through voice communication with the sensor device SU.

Another system AS is, for example, a system for reserving a tour of a nursing care facility that has introduced the monitored person monitoring support system MS, and a system for the accounting department of this nursing care facility. Another system AS includes a server SV1 used in this system and one or more personal computers PC1 that can access the server SV1. These are connected to the L2 switch LS.

The administrator personal computer PC2 is a personal computer used by an administrator who manages the monitored person monitoring support system MS and another system AS. The administrator personal computer PC2 is connected to the L2 switch LS.

The L2 switch LS is an example of a communication control device that can set a VLAN. The administrator personal computer PC2 is used for VLAN settings. A first VLAN and a second VLAN are set in the network NW, which is a physical network, by the L2 switch LS. The first VLAN is a VLAN assigned to communication of the monitored person monitoring support system MS. The sensor device SU, the management server device SV, the fixed terminal device SP, the private branch exchange CX, and the access point AP are virtually connected by the first VLAN.

The second VLAN is a VLAN assigned to communication of another system AS. The second VLAN virtually connects the personal computer PC1, the server SV1, and the private branch exchange CX. In the embodiment, an L2 switch LS is used as a communication control device capable of setting a VLAN, but an L3 switch may be used as a communication control unit. Further, in the embodiment, there is one other system AS, but there may be a plurality of other systems AS. In this case, a VLAN is set for each of these systems.

According to VLAN, when building a communication network for a new system while the communication network for an existing system has been constructed, the communication network for the new system can be created using the physical network used for the communication network for the existing system. Can be built. I will explain in detail. It is assumed that a communication network for another system AS has been constructed, and a new communication network for the monitored person monitoring support system MS is to be constructed. A physical network consisting of an L2 switch LS, private branch exchange CX, etc. already exists. By connecting the devices used for communication of the monitored person monitoring support system MS (sensor device SU, management server device SV, fixed terminal device SP, access point AP) to the L2 switch LS, the monitored person monitoring support system A communication network for MS can be constructed.

The L2 switch LS can be configured to prioritize communication between one VLAN and the second VLAN over the other. explain in detail. This can be achieved, for example, by QoS (Quality of Service) priority control. The administrator personal computer PC2 is used to set the priority control. FIG. 2 is an explanatory diagram illustrating an example of the priority control setting screen 10. The setting screen 10 is displayed on the display of the administrator personal computer PC2, and includes radio buttons 11 and 12.

The radio button 11 corresponds to a VLAN (first VLAN) assigned to communication of the monitored person monitoring support system MS. When preferentially controlling the communication of the first VLAN, the administrator operates the administrator's personal computer PC2 to check the radio button 11. As a result, the L2 switch LS is set to prioritize communication of the first VLAN. With this setting, the communication of the first VLAN is given priority over the communication of the second VLAN, so that the communication of the monitored person monitoring support system MS can be given priority over the communication of another system AS. If immediacy is not required for communication of another system AS, settings are made to prioritize communication of the first VLAN.

The radio button 12 corresponds to a VLAN (second VLAN) assigned to communication of another system AS. When preferentially controlling the communication of the second VLAN, the administrator operates the administrator's personal computer PC2 to check the radio button 12. As a result, the L2 switch LS is set to prioritize communication of the second VLAN. With this setting, the communication of the second VLAN is given priority over the communication of the first VLAN, so that the communication of another system AS can be given priority over the communication of the monitored person monitoring support system MS. If immediacy is required for communication in another system AS, settings are made to prioritize communication in the second VLAN.

When radio button 11 or radio button 12 is not checked, priority control is not set in L2 switch LS.

FIG. 3 is a functional block diagram of the L2 switch LS. The L2 switch LS includes a plurality of ports 20, a queue 21, a MAC address table 22, and a switch control unit 23.

The port 20 is an input/output terminal that can be connected to equipment external to the L2 switch LS.

The queue 21, the MAC address table 22, and the switch control unit 23 are configured using hardware such as a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and an HDD (Hard Disk Drive). wear processor , and a program for executing these functions. Some or all of the functions of the queue 21, MAC address table 22, and switch control unit 23 may be realized by processing by a DSP (Digital Signal Processor) instead of or in addition to processing by the CPU. Furthermore, some or all of the functions of the queue 21, MAC address table 22, and switch control unit 23 may be realized by processing by a dedicated hardware circuit instead of or in addition to software processing.

Devices that communicate with each of the plurality of ports 20 using the network NW (sensor device SU, management server device SV, fixed terminal device SP, private branch exchange CX, access point AP, personal computer PC1, server SV1, administrator personal computer PC2) ) are connected by a LAN cable.

The queue 21 temporarily holds data (packets) input to and output from each port 20.

The MAC address table 22 stores the number of each of the plurality of ports 20 and the MAC address of the device communicating using the network NW in association with each other. To explain specifically, it is assumed that the number of the port 20 connected to the sensor device SU-1 is 1. The MAC address table 22 stores the MAC address of the sensor device SU-1 and number 1 in association with each other.

When data (packet) is input to the port 20, the switch control unit 23 refers to the MAC address table 22 and identifies the number associated with the destination MAC address included in the data (packet). , controls the output of data (packets) from the port 20 with this number.

A first VLAN and a second VLAN are set in the L2 switch LS. Therefore, the switch control unit 23 controls the devices (sensor device SU, management server device SV, fixed terminal device SP, private branch exchange CX, access point AP) that are virtually connected by the first VLAN. Controls the devices that are virtually connected via the second VLAN (personal computer PC1, server SV1, private branch exchange CX) to enable communication between these devices. , controls such that devices virtually connected by the first VLAN and devices virtually connected by the second VLAN cannot communicate with each other.

When priority control is not set for the L2 switch LS, the switch control unit 23 performs FIFO processing. That is, the switch control unit 23 controls the data (packets) stored in the queue 21 to be outputted from the port 20 in the order in which the data (packets) were input to the port 20.

When data passing through the first VLAN and data passing through the second VLAN are input to the L2 switch LS in a state where priority control is set for the L2 switch LS, the L2 switch LS has a high priority. After outputting data (packets), output data (packets) with lower priority. explain in detail. When data passing through the first VLAN and data passing through the second VLAN are input to the port 20 in a state where priority control is set for communication in the first VLAN, the switch control unit 23 controls the queue Among the data (packets) stored in 21, the data passing through the first VLAN is controlled to be outputted from the port 20, and then the data passing through the second VLAN is controlled to be outputted from the port 20. When data passing through the first VLAN and data passing through the second VLAN are input to the port 20 in a state where priority control is set for communication in the second VLAN, the switch control unit 23 controls the queue Among the data (packets) stored in 21, the data passing through the second VLAN is controlled to be outputted from the port 20, and then the data passing through the first VLAN is controlled to be outputted from the port 20. The priority control is not limited to the absolute priority described above, but may be other methods (for example, weighted round robin (WRR)).

As described above, when priority control is set for communication of the second VLAN in the L2 switch LS (communication control device), communication of another system AS is given priority over communication of the monitored person monitoring support system MS. be done. However, immediacy may also be required in the communication of the monitored person monitoring support system MS (for example, a nurse's call, notification of a fall). Therefore, even if priority control is set for communication in the second VLAN, the L2 switch LS gives priority to communication in the first VLAN over communication in the second VLAN under certain conditions. . This will be explained.

The types of data communicated in the first VLAN are divided in advance into a first type and a second type. A monitored person monitoring support system MS is assigned to the first VLAN. Therefore, the data communicated on the first VLAN is the data communicated by the monitored person monitoring support system MS. The type of data communicated in the first VLAN is indicated in the header of each packet constituting this data.

The first type of data is data that has a size such that if priority is given to communication in the first VLAN, communication in the second VLAN will be seriously hindered. The first type of data is, for example, a video of the monitored person Ob taken by the sensor device SU in order for the sensor device SU to detect that a predetermined event (for example, a fall) has occurred in the monitored person Ob. . The sensor device SU transmits the captured video to the management server device SV, and the management server device SV stores the video. The video is used when checking the condition of the monitored person Ob later (for example, checking whether the monitored person Ob is being abused).

The second type of data is data having a size that does not cause a major hindrance to communication in the second VLAN even if priority is given to communication in the first VLAN. The second type of data includes, for example, a text indicating the name and room number of the monitored person Ob who made a nurse call, and a text indicating the name and room number of the monitored person Ob who has fallen when the sensor device SU detects a fall of the monitored person Ob. and text indicating the room number. The former text is sent from a nurse call slave device (not shown) to a nurse call parent device (not shown). The former text is then sent from the nurse call base device to each mobile terminal device TA via the management server device SV using the first VLAN.

FIG. 4 is a flowchart illustrating the operation of the L2 switch LS when priority control is set for communication on the second VLAN. Referring to FIGS. 1, 3, and 4, data communicated in the first VLAN and data communicated in the second VLAN are input to the L2 switch LS (step S1). The switch control unit 23 determines whether the type of data communicated on the first VLAN is the first type or the second type (step S2). The type of data is indicated in the packet header.

When the switch control unit 23 determines that the type of data communicated on the first VLAN is the first type, the switch control unit 23 controls to output the data communicated on the second VLAN first, and then outputs the data communicated on the second VLAN first. Control is performed to output data communicated via VLAN (step S3).

When the switch control unit 23 determines that the type of data communicated on the first VLAN is the second type, the switch control unit 23 controls to output the data communicated on the first VLAN first, and then outputs the data communicated on the first VLAN. Control is performed to output data communicated via VLAN (step S4).

(Summary of embodiments)
The communication network according to the embodiment includes a plurality of sensor devices that are assigned to each of a plurality of people to be monitored, and that detect the occurrence of a predetermined event regarding the assigned person to be monitored, and a plurality of sensor devices carried by each of the plurality of monitors. A communication network used for communication of a monitored person monitoring support system comprising a plurality of terminal devices, and a server device capable of communicating with the plurality of sensor devices and the plurality of terminal devices, the communication network being a first VLAN assigned to communication of the monitored person monitoring support system, set by the communication control device, and the monitored person monitoring support system set by the communication control device. a second VLAN assigned to communication between the system and another system, and the communication control device is configured to give priority to communication of one of the first VLAN and the second VLAN over the other. is possible.

Giving priority to communication over the other means giving priority to communication in the first VLAN over communication in the second VLAN, or giving priority to communication in the second VLAN over communication in the first VLAN. It is. By giving priority to the communication of the first VLAN, it is possible to give priority to the communication of the monitored person monitoring system. By giving priority to the communication of the second VLAN, it is possible to give priority to the communication of another system.

The communication control unit can set the first VLAN and the second VLAN to give priority to communication over the other. The user can set the communication control unit to prioritize one communication over the other, taking into consideration the immediacy of communication, amount of data, etc. Therefore, according to the communication network according to the embodiment, it is possible to appropriately operate the VLAN assigned to communication of the monitored person monitoring support system and the VLAN assigned to a system other than this system.

In the above configuration, the communication control device is configured to give priority to communication in the second VLAN over communication in the first VLAN, and the type of data to be communicated in the first VLAN is determined in advance. In the case of the first type, communication of the second VLAN is given priority over communication of the first VLAN, and the type of data communicated in the first VLAN has a larger amount of data than the first type. In the case of a predetermined second type in which the number of VLANs is small, communication in the first VLAN is prioritized over communication in the second VLAN.

The first type of data is data (for example, a video) that has a size such that if priority is given to communication in the first VLAN, communication in the second VLAN will be seriously hindered. The second type of data is data (for example, short text) that has a size that does not significantly hinder communication in the second VLAN even if priority is given to communication in the first VLAN.

When the type of data communicated in the first VLAN is the first type under a setting that gives priority to the communication in the second VLAN over the communication in the first VLAN, the communication control device, as a general rule, Communication in the second VLAN is given priority over communication in the first VLAN. On the other hand, under the above settings, when the type of data communicated in the first VLAN is the second type, the communication control device makes an exception and transfers the communication of the first VLAN to the second VLAN. Prioritize communication. This configuration is effective when the second type of data has immediacy (for example, text indicating the name and room number of the person to be monitored who has made a nurse call).

In the above configuration, each of the plurality of sensor devices shoots a video of the assigned person to be monitored, and based on the video, detects that the assigned person to be monitored has fallen, and detects the fall. Text indicating the detected name and room number of the monitored person is sent from the sensor device that detected the fall to the plurality of terminal devices via the server device using the first VLAN, The videos shot by each of the plurality of sensor devices are sent to the server device using the first VLAN, and the first type of data is transmitted from the videos shot by each of the plurality of sensor devices to the server device using the first VLAN. The second type of data includes text indicating the name and room number of the person to be monitored whose fall was detected.

Text indicating the name and room number of the monitored person whose fall was detected is sent from the sensor device that detected the fall to the plurality of terminal devices via the server device. This allows each supervisor to know that the person to be monitored has fallen. The videos captured by each of the plurality of sensor devices are sent to the server device and stored there. These videos are used when checking the condition of the person being monitored later (for example, checking whether the person being monitored is being abused).

The text indicating the name and room number of the person to be monitored whose fall has been detected has immediacy. On the other hand, videos captured by a plurality of sensor devices do not have immediacy. This configuration uses text as the second type of data and video as the first type of data. According to this configuration, even under settings that give priority to communication in the second VLAN over communication in the first VLAN, a fall can be detected without causing any major hindrance to communication in the second VLAN. Priority can be given to text communications indicating the name and room number of the monitored person.

Although embodiments of the invention have been illustrated and described in detail, it is intended to be illustrative and illustrative only and not limiting. The scope of the invention should be construed by the language of the appended claims.

Japanese Patent Application No. 2018-151349 filed on August 10, 2018, the entire disclosure of which is incorporated herein by reference in its entirety.

According to the present invention, a communication network can be provided.

Claims (3)

a plurality of sensor devices that are assigned to each of a plurality of people to be monitored and detect the occurrence of a predetermined event with respect to the assigned person to be monitored; a plurality of terminal devices carried by each of the plurality of monitors; A communication network used for communication of a monitored person monitoring support system comprising a plurality of sensor devices and a server device capable of communicating with the plurality of terminal devices,
A communication control device that can set VLAN,
a first VLAN set by the communication control device and assigned to communication of the monitored person monitoring support system;
a second VLAN set by the communication control device and assigned to communication between the monitored person monitoring support system and another system;
The communication control device is capable of setting one of the first VLAN and the second VLAN to give priority to communication over the other,
The communication control device is configured to give priority to communication in the second VLAN over communication in the first VLAN, and the communication control device is configured to set a predetermined first type of data to be communicated in the first VLAN. type, the communication in the second VLAN is given priority over the communication in the first VLAN, and the type of data communicated in the first VLAN is predetermined to have a smaller amount of data than the first type. of the second type, giving priority to communication in the first VLAN over communication in the second VLAN ;
communication network. 2. The communication network according to claim 1 , wherein the second type of data includes text indicating the name and room number of the monitored person who made the nurse call among the plurality of monitored persons. Each of the plurality of sensor devices takes a video of the assigned person to be monitored, and based on the video, detects that the assigned person to be monitored has fallen;
A text indicating the name and room number of the monitored person whose fall was detected is sent from the sensor device that detected the fall to the plurality of terminal devices via the server device using the first VLAN. is,
The videos shot by the plurality of sensor devices are sent to the server device using the first VLAN,
The first type of data includes the video captured by each of the plurality of sensor devices,
3. The communication network according to claim 1 , wherein the second type of data includes text indicating the name and room number of the person to be monitored whose fall has been detected.

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