JP2005244775A - Nurse call system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To construct a call and speak system by using a conventional nurse call system, and to construct a system for detecting a location of a call originating transmitter by using a personal computer. <P>SOLUTION: A nurse call system of the present invention comprises: a radio wave reception system L1 including receivers 3a, 3b, 3c for receiving calling radio waves and transmitter IDs sent from call originating transmitters 2a, 2b, 2c that patients carry with them, and sending field strengths of calling radio waves, the transmitter IDs and receiver IDs and a master unit 6 for displaying calling patients from the transmitter IDs and specifying a location or an area of a call originating transmitter from a receiver ID, a field strength of a calling radio wave or a time for arrival; and call and speaking systems L4, L5, L6, L7 each including adapters 4a, 4b, 4c for sending calling signals which are transmitted from bed slave units 1a, 1b, 1c, 1d and with bed IDs added thereto, and calling radio waves sent from the call originating transmitters via the receivers, for announcing a call from a calling signal and a calling radio wave, displaying a call from a bed slave unit if a bed ID is received, for speaking with each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a nurse call system, and in particular, can receive a call radio wave and a transmitter ID transmitted from a call transmitter carried by a patient, and can transmit the field strength of the call radio wave, the transmitter ID, and the receiver ID. The present invention relates to a nurse call system including a receiver capable of receiving signals.

  Conventionally, this kind of nurse call system is partly wireless, and the important part (the part that must secure the call and care for the patient) is wired, and the wired is used for power supply and call signal A device for displaying a call from a patient on a display device in a nurse center is known (for example, see Patent Document 1).

  According to the nurse call system having such a configuration, the power line connecting the device (parent device) installed in the nurse center and the device (bed child device) installed in the hospital room is used to supply power to the device. By using it for calling signal transmission, wiring work can be greatly reduced, it is excellent in economic efficiency, and the nurse center can be called reliably in an emergency.

  However, in the nurse call system having such a configuration, a system is constructed by adding a wireless slave unit (calling transmitter) to a normal nurse call system. The apparatus had to be prepared separately, and there was a difficulty that it became expensive in terms of cost. In such a nurse call system, all data such as a call signal and patient information are transmitted to the control device via the adapter, so that the control device is overloaded and the data is processed quickly. It may be difficult to do.

JP 10-165376 A (paragraph numbers “0009”, “0048”, FIG. 1)

  The present invention has been made to solve the above-mentioned problems, and it is possible to construct a call call by a conventional nurse call system and to construct a position detection of a wireless slave unit (call transmitter) by a personal computer. It aims to provide a nurse call system that can

  The nurse call system according to the first aspect of the present invention receives a call radio wave and a transmitter ID transmitted from a call transmitter carried by a patient, and transmits the electric field strength of the call radio wave, the transmitter ID and the receiver ID. A radio receiver having a master unit for displaying a receiver called by a transmitter ID and a transmitter ID to identify the position or area of the call transmitter from the receiver ID and the electric field strength or arrival time of the call radio wave, and a bed It has a call signal sent from the slave unit with a bed ID and an adapter that sends out a call wave sent from the call transmitter via the receiver. In this case, it is provided with a call communication system for displaying a call from the bed slave unit and communicating with each other.

  According to a second aspect of the present invention, in the nurse call system according to the first aspect of the present invention, a video signal is provided in the vicinity of the receiver, picks up an image, and picks up an image using a digital data protocol such as TCP / IP. When a call is sent from a call transmitter, a camera capable of imaging a patient is specified based on the receiver ID, and an image transmitted from the camera is displayed on the master unit. .

  According to a third aspect of the present invention, in the nurse call system according to the first aspect or the second aspect of the present invention, the receiver and the camera are shared and connected to a hub.

  According to a fourth aspect of the present invention, in the nurse call system according to the second aspect or the third aspect of the present invention, there is provided a receiver in which intermittent call radio waves transmitted at regular intervals from a call transmitter are installed at various places. If there is no change in the electric field strength or arrival time data value of the intermittent ringing radio wave, or if the data value changes within the specified range, it is determined that the patient carrying the call transmitter cannot move and is received Based on the machine ID, a camera capable of imaging a patient is specified, and an image transmitted from the camera is displayed on the parent machine.

  According to a fifth aspect of the present invention, there is provided a nurse call system according to any one of the second to fourth aspects of the present invention, wherein a patient carrying a call transmitter is located in a danger zone based on the location information of the call transmitter. When it is determined that the camera is approaching, a camera capable of imaging the patient is identified based on the receiver ID, and an image transmitted from the camera is displayed on the parent device.

  According to a sixth aspect of the present invention, in the nurse call system according to any one of the second to fifth aspects of the present invention, a call is made by an operation from a parent device based on position information of a call transmitter. A camera capable of imaging a patient carrying the transmitter is specified, and an image transmitted from the camera is displayed on the parent device.

  According to a seventh aspect of the present invention, in the nurse call system according to any one of the second to sixth aspects of the present invention, a plurality of images capable of imaging a patient based on position information of a call transmitter A camera is specified, and images transmitted from a plurality of cameras are displayed on the master unit using a multi-window system such as a pop-up.

  According to an eighth aspect of the present invention, in the nurse call system according to any one of the first to seventh aspects of the present invention, the adapter receives a call radio wave received from a call transmitter via a receiver. When the wireless transmission flag is received, the master unit transmits to the calling communication system that the call is from the calling transmitter.

  According to a ninth aspect of the present invention, in the nurse call system according to any one of the first to eighth aspects of the present invention, the adapter is connected to the receiver by diverting a channel of an empty bed. It is.

  According to a tenth aspect of the present invention, in the nurse call system according to any one of the first to ninth aspects of the present invention, the parent device is a radio wave parent device connected to the radio wave receiving system; And a calling / calling master connected to the calling / calling system.

  According to the nurse call system of the first aspect to the tenth aspect of the present invention, it is possible to construct a call communication system by a conventional nurse call system and a call transmitter position detection system by a personal computer. Therefore, it is possible to provide a wireless nurse call system having a call transmitter using a conventional adapter or control device. In addition, the following effects are also produced.

  First, since the position or area of the call transmitter carried by the patient can be specified by the receiver ID, it is possible to quickly deal with the patient without searching for the patient.

  Secondly, since a patient image is transmitted from a camera provided in the vicinity of the receiver, it is possible to check the state of the patient with the camera, and thus, urgent action is required for the patient. It is possible to easily determine whether or not.

  Thirdly, since the hub is provided, the receiver and the camera can be connected in common.

  Fourth, when intermittent call radio waves transmitted at regular intervals from a call transmitter are received by receivers installed at various locations, the data value of the electric field strength of the intermittent call radio waves does not change or the data value is within a predetermined range. If it changes, the patient carrying the call transmitter is determined to be unable to move, a camera that can image the patient is identified based on the receiver ID, and the image transmitted from the camera is a parent computer or the like. Since it can be displayed on the machine, even a patient who cannot fall down and cannot move can be automatically detected, and the response to the patient can be prevented from being too late.

  Fifth, when the patient carrying the call transmitter approaches the danger area based on the position information of the call transmitter, an image of the patient can be transmitted from the adjacent camera and displayed on the parent device such as a personal computer. Therefore, it is possible to prevent the patient from moving to another ward or a place where nursing care is difficult.

  Sixth, identifying a camera capable of imaging a patient by an operation from a parent device such as a personal computer based on the position information of the calling transmitter, and causing the parent device to display an image transmitted from the camera. It can be easily grasped wherever the patient is.

  Embodiments to which the nurse call system of the present invention is applied will be described below with reference to the drawings. Here, FIG. 1 shows a block diagram of a nurse call system in one embodiment of the present invention.

  In the figure, the nurse call system of the present invention includes first to fourth bed slaves 1a, 1b, 1c, and 1d installed near the patient bed in each hospital room, and first to fourth bed children. Assigned to each of the devices 1a, 1b, 1c, 1d and carried by each patient, the first to fourth call transmitters 2a, 2b, 2c, 2d, and the first receiver 3a installed in a hospital room, for example. A first adapter 4a, a second receiver 3b and a second adapter 4b installed in a toilet, for example, a third receiver 3c and a third adapter 4c installed in a shared section, for example, A digital data protocol such as TCP / IP (Transmission Control Protocol / Internet Protocol) provided near each of the third receivers 3a, 3b, and 3c. Therefore, the first to third cameras 5a, 5b, and 5c that transmit the captured video signals, the parent device 6 installed in the nurse station, the control device 7 installed in the common unit, and the camera are shared. A hub 8 (HUB) that can be connected and a server 9 are provided. The base unit 6 includes a first base unit (hereinafter referred to as “radio base unit” as appropriate) 6a composed of a personal computer or the like connected to the radio wave reception system, and a second base unit connected to the call communication system. The first to third adapters 4a, 4b, and 4c have the same configuration, and the first to third receptions are respectively provided. Receiver interface (hereinafter referred to as "receiver I / F") 41 that can be connected to the machines 3a, 3b, and 3c, a channel used by the bed slave unit, and a channel used by diverting the channel of the empty call transmitter (Not shown), the first to third receivers 3a, 3b, 3c have the same configuration and can be connected to the receiver I / F 41 (hereinafter referred to as "adapter I / F"). ) 32 and a first base unit (Denpa base unit) PC interface that can connect to 6a (hereinafter referred to as "PC · I / F".) And a 31. The seventh transmission line L7 is the first to fourth handset transmission lines L7a, L7b, L7c, and L7d, and the ninth transmission line L9 is the first to fourth camera transmissions configured with LAN cables or the like. The roads L9a, L9b, L9c, and L9d are respectively configured.

  Here, the first base unit (radio-system base unit) 6a is connected to the PC / I / F 31 of the first to third receivers 3a, 3b, and 3c via the first transmission path L1. The first to third receivers 3a, 3b, 3c are respectively connected to the second master unit (calling telephone master unit) 6b via the transmission line L2 and to the hub 8 via the third transmission line L3. In the adapter I / F 32, the receiver I / F 41 of each of the first to third adapters 4a, 4b, and 4c corresponding to the adapter I / F 32 via the fourth transmission line L4 is connected to the second master unit (call communication parent). Machine) 6b is connected to a control device 7 via a fifth transmission line L5. The control device 7 is connected to the first to third adapters 4a, 4b, and 4c via the sixth transmission line L6, and the first adapter 4a is connected to the first adapter 4a via the first slave unit transmission line L7a. The first bed slave unit 1a is connected to the second bed slave unit 1b via the second slave unit transmission line L7b, and the third bed slave unit 1c is connected via the third slave unit transmission line L7c. 4th subunit | mobile_unit 1d is each connected via the 4 subunit | mobile_unit transmission line L7d. Further, the hub 8 is connected to the server via the eighth transmission path L8 and to the first to third cameras 5a, 5b, and 5c via the first to fourth camera transmission paths L9a, L9b, L9c, and L9d. Each is connected. The first to third receivers 3a, 3b, and 3c described above are connected to the channels of the corresponding first to third adapters 4a, 4b, and 4c as follows. That is, normally, six bed child devices 1a, 1b, 1c, 1d,... Are installed in a hospital room, and these bed child devices 1a, 1b, 1c, 1d,. Each of the first to third adapters 4a, 4b, and 4c is equipped with six connection channels. However, in this embodiment, since four bed slaves 1a, 1b, 1c, and 1d are installed in one room, each of the first to third adapters 4a, 4b, and 4c has two empty beds. There will be channels. Therefore, in this embodiment, the corresponding first to third receivers 3a, 3b, and 3c are connected by diverting one empty bed channel out of two empty bed channels.

  Next, the operation of the nurse call system of the present invention will be described. In the nurse call system of the present invention, the call function possessed by the second master unit (call call master unit) 6b and the call function possessed by the first to fourth bed slave units 1a, 1b, 1c, 1d Between the first transmission line L5, the control device 7, the sixth transmission line L6, the first adapter 4a, and the seventh transmission line L7 (hereinafter referred to as “call communication system”). The point that the communication path is formed is the same as that of the conventional nurse call system, and thus detailed description thereof is omitted.

  First, for example, a patient in a hospital room (hereinafter referred to as a “first patient”) calls a call button (not set) of a call transmitter (hereinafter referred to as a “first call transmitter”) 2a assigned to the first patient. When a user presses down (shown), a call radio wave (hereinafter referred to as “first transmitter ID”) including a transmitter ID (hereinafter referred to as “first transmitter ID”) related to the first call transmitter 2a from the first call transmitter 2a. Is called the first to third receivers 3a to 3c.

  When the first receiver radio wave is received by the first receiver 3a, it is received from the PC · I / F (hereinafter referred to as “first PC · I / F”) 31 of the first receiver 3a. Field strength data (or data for determining reception), data including the first transmitter ID and the ID related to the first receiver 3a (hereinafter referred to as “first receiver ID”) (hereinafter “first receiver ID”). First data ”) is output, and the first data is transmitted through the first transmission line L1 system (hereinafter referred to as“ radio wave reception system ”) to the first master unit (radio system master unit). 6a. Similarly, from the PC · I / F (hereinafter referred to as “second and third PC · I / F”) 31 of the second and third receivers 3b and 3c, electric field strength data at the time of reception (or Data for determining reception), data including the first transmitter ID and IDs related to the second and third receivers 3b and 3c (hereinafter referred to as “second and third receiver IDs”) (hereinafter referred to as “second receiver ID”). "Second and third data") is output, and the second and third data are transmitted to the first parent device (radio-system parent device) 6a via the radio wave receiving system L1.

  Here, in the first base unit (radio-system base unit) 6a, the maximum value of the electric field strength data constituting the first to third data is determined, so that it is closest to the first call transmitter 2a. For example, the second receiver 3b is specified. That is, for example, when the field intensity data constituting the second data among the field intensity data constituting the first to third data is determined to be the maximum value, the second receiver installed in the toilet It is determined that the first call transmitter 2a is located in the vicinity of 3b.

  When the position of the first call transmitter 2a is specified in this way, a transmitter position determination signal containing the first transmitter ID is output from the first parent device (radio-system parent device) 6a. Then, the transmitter position determination signal is transmitted to the second PC · I / F 31 via the radio wave receiving system L1. When such a transmitter position determination signal is input to the second PC · I / F 31, a call signal is sent from the adapter I / F (hereinafter referred to as “second adapter I / F”) 32 of the second receiver 3 b. (Hereinafter referred to as “first paging signal”) is output, and the first paging signal is transmitted via the fourth transmission line L4 to the receiver I / F (hereinafter referred to as “second reception”) of the second adapter 4b. Machine I / F ”). Further, when the first call signal is input to the second receiver I / F 41, the ID related to the second adapter 4b from the second adapter 4b (hereinafter referred to as “second adapter ID”) is included. A call detection signal (hereinafter referred to as “first call detection signal”) to be transmitted is output by diverting the channel of the empty bed, and the first call detection signal is transmitted to the control device 7 via the sixth transmission line L6. Is transmitted.

  When the control device 7 detects the first call detection signal, the control device 7 outputs a call control signal (hereinafter referred to as “first call control signal”) containing the second adapter ID. The first call control signal is transmitted to the second parent device (call communication parent device) 6b via the fifth transmission line L5. As a result, a call display from the first patient is performed on the second parent device (calling communication parent device) 6b, and an indicator lamp (not shown) assigned in advance to the second adapter 4b flashes. . The first call control signal is transmitted to the first master unit (radio-system master unit) 6a via the second master unit (call-calling master unit) 6b and the second transmission path L2, and this is applied. When the first call control signal is detected by the first parent device (radio-system parent device) 6a, patient information stored in a storage device (not shown) of the first parent device (radio-system parent device) 6a. The database related to the data base and the data base related to the receiver installation location are compared with the first transmitter ID and the second adapter ID. As a result, patient management data indicating the name of the patient (first patient in this embodiment) carrying the first call transmitter 2a, medical / nursing data indicating the patient's relief category, etc. "Patient data") and a display unit (not shown) such as an LCD with a touch panel in which the place where the first patient has called (toilet in this embodiment) constitutes the first base unit (radio system base unit) 6a ) Pops up. Here, the data related to the above-mentioned patient information and the data related to the receiver installation location are obtained by sending an information acquisition command from the first master unit (radio system master unit) 6a to the third transmission line L3, the hub 8, and the eighth transmission line. It may be transmitted to the server 9 via L8 and obtained from the server 9.

  Next, an additional function of the nurse call system of the present invention will be described.

  First, when the cameras 5a, 5b, and 5c are installed close to the receivers 3a, 3b, and 3c, respectively, the position of the first call transmitter 2a is set by the first master unit 6, for example. When specified, the camera (second camera 5b in this embodiment) that images the first patient is specified as follows based on the position information of the first call transmitter 2a. That is, in the first base unit (radio system base unit) 6a, if it is specified that the first call transmitter 2a is located, for example, in the vicinity of the area of the second receiver 3b, the first base unit (Radio system parent device) The IP address of the second camera 5b installed in the toilet is specified from the correspondence table between the second receiver 3b and the camera address stored in the storage device of the radio 6a.

  Here, when the nurse operates an image output request button (not shown) of the second camera 5b with respect to the first master unit (radio system master unit) 6a, the first master unit (radio system master unit). 6a sends an image output request signal to the IP address of the second camera 5b, and the second camera 5b captures an image near the area of the first patient and the second receiver 3b. The first master unit is transmitted to the first base unit (radio-system base unit) 6a via the second LAN cable L9b, the hub 8, and the third transmission line L3 by a digital data protocol such as TCP / IP. An image of the first patient is displayed on the display unit of the (radio wave base unit) 6a.

  According to this embodiment, the position of the first patient can be confirmed from the position of the second receiver 3b close to the first call transmitter 2a, and transmitted from the second camera 5b. Since it is possible to confirm the state of the first patient from the image, it is not necessary to search for the first patient, and it is possible to easily and quickly determine whether an urgent response is necessary for the first patient. can do.

  Second, for example, the first call transmitter 2a transmits radio waves at regular intervals (hereinafter referred to as "intermittent transmission radio waves"), and the first to third receptions in which the intermittent transmission radio waves are installed in various places. It may be received by the machines 3a to 3c and the position of the first call transmitter 2a may be specified.

  In this embodiment, the electric field strength data in the first to third data transmitted from the receivers 3a, 3b, 3c to the first master unit (radio system master unit) 6a via the radio wave receiving system L1. By determining the change, it is possible to grasp the first patient's emergency.

  That is, for example, as described above, the position of the first patient is specified to be near the area of the second receiver 3b, and there is no change in the value of the electric field intensity or arrival time data constituting the second data. If the value of the electric field strength data changes within a certain range, a patient emergency confirmation signal containing the first transmitter ID is output from the first parent device (radio-system parent device) 6a. Then, the patient emergency confirmation signal is transmitted to the first and second master units 6a and 6b via the same system as the transmitter position determination signal. As a result, a call display indicating that the first patient is in an emergency is displayed on the second parent device (calling communication parent device) 6b, and the first parent device (radio-wave parent device) 6a is displayed. The first patient data and the position (toilet) of the second receiver 3b specified as the position of the first patient can be displayed in a pop-up on the section. Further, in the same manner as described above, it is possible to display pop-up images of the first patient and the vicinity of the toilet taken by the second camera 5b.

  Third, when the dangerous area is classified and stored in the database related to the receiver installation location of the first parent device (radio-system parent device) 6a, it is difficult for the patient to deal with the dangerous area, for example, nursing care. Moving to a place (for example, another ward) can be prevented in advance.

  That is, for example, a first patient carrying the first call transmitter 2a is connected to a receiver installed in a dangerous area (in the following embodiment, the second receiver 3b is assumed to be installed in the vicinity of the dangerous area.) When approaching, the dangerous area approach confirmation signal containing the first transmitter ID is sent from the first parent device (radio-system parent device) 6a. The dangerous area approach confirmation signal is transmitted to the first and second master units 6a and 6b via the same system as the transmitter position confirmation signal. As a result, a call display indicating that the first patient is approaching the danger zone is given to the second parent device (calling communication parent device) 6b, and the first parent device (radio-system parent device) 6a. And a pop-up display indicating that the danger area (the second receiver 3b in this embodiment) and that the first patient is approaching the danger area. Furthermore, in the same manner as described above, an image of the first patient and the vicinity of the dangerous area captured by the second camera 5b can be displayed in a pop-up manner.

  Fourth, intermittent transmission radio waves are transmitted from the calling transmitter, and the patient's position information specified by the first master unit 6a is always displayed on the display unit of the first master unit 6a together with the patient's name. If necessary, by touching the corresponding part of the first base unit 6a (the part where the patient's name is displayed), the patient's image is transmitted from the identified camera and displayed in a pop-up or the like. it can.

  FIG. 2 shows a system configuration diagram of a nurse call system according to another embodiment of the present invention. In the figure, parts common to those in FIG. 1 are denoted by the same reference numerals and detailed description thereof is omitted.

  In this embodiment, instead of the first transmission line L1 shown in FIG. 1, first, second, and third LAN cables L1a, L1b, and L1c are used, and the first LAN cable L1a is used for the first transmission line L1. The first receiver 3a is connected in parallel to the second receiver 3b via the second LAN cable L1b, and the third receiver 3c is connected to the hub 8 via the third LAN cable L1c. .

  According to this embodiment, the plurality of receivers 3a to 3c and the plurality of cameras 5a to 5c can be connected in common, and wiring and construction can be easily performed.

  The nurse call system of the present invention is not limited to the above-described embodiment. For example, the nurse call system of the present invention has the same effects as described below.

  First, in the above-described embodiment, the position of the calling transmitter is specified from the electric field strength of the calling radio wave, but from the arrival time of the calling radio wave, that is, the electric field strength data transmitted from each receiver. Of these, it may be determined that the call transmitter is located in the vicinity of the receiver that transmits the fastest.

  Second, based on the receiver ID, a plurality of cameras that can capture the patient carrying the call transmitter are identified, and images transmitted from the plurality of cameras are displayed on the first parent using a multi-window system such as a pop-up. You may display on the personal computer which comprises a machine.

  Thirdly, the above-mentioned adapter adds a radio transmission flag to the call radio wave received from the call transmitter via the receiver and sends it out, and if the master unit receives the radio transmission flag, the adapter transmits the call from the call transmitter. The call may be transmitted to the call communication system.

  Fourth, the number of hospital rooms and the number of receivers, adapters, hubs, and cameras are not limited to those in the embodiment, and can be increased or decreased according to the scale of the system.

The system block diagram of the nurse call system in one Example of this invention. The system block diagram of the nurse call system in the other Example of this invention.

Explanation of symbols

1a, 1b, 1c, 1d ... bed slave units 2a, 2b, 2c, 2d ... call transmitters 3a, 3b, 3c ... receivers 4a, 4b, 4c ... adapters 5a, 5b, 5c ... Camera 6a ... First base unit (Radio system base unit)
6a ... Second base unit (calling telephone base unit)
8: Hub L1: Radio wave reception system L4, L5, L6, L7: Call communication system

Claims (10)

A call radio wave and a transmitter ID transmitted from a call transmitter (2a, 2b, 2c, 2d,...) Carried by the patient are received, and the electric field strength of the call radio wave, the transmitter ID and the receiver ID are received. The receiver to be sent (3a, 3b, 3c,...), The patient called by the transmitter ID is displayed, and the position of the call transmitter or the position of the call transmitter is determined from the receiver ID and the electric field strength or arrival time of the calling radio wave. A radio wave reception system (L1) having a master unit (6) for specifying an area;
Adapters (4a, 1a, 1b, 1c, 1d,...) That transmit a call signal transmitted with a bed ID and a call signal sent from the call transmitter via the receiver. 4b, 4c,...), The call is notified by the call signal and the call radio wave, and when the bed ID is received, it is indicated that the call is from the bed slave unit, and calls are made mutually. A nurse call system comprising a call communication system (L4, L5, L6, L7). By providing a camera (5a, 5b, 5c,...) That is provided in the vicinity of the receiver, captures an image, and transmits a video signal captured by a digital data protocol such as TCP / IP.
The caller is characterized in that when a call is made from the call transmitter, a camera capable of imaging the patient is identified based on the receiver ID, and an image transmitted from the camera is displayed on the parent device. The nurse call system according to 1.   The nurse call system according to claim 1 or 2, wherein the receiver and the camera are shared and connected to a hub (8).   The intermittent call radio waves transmitted at regular intervals from the call transmitter are received by the receivers installed at various places, and there is no change in the data value of the electric field strength or arrival time of the intermittent call radio waves, or the data value Is changed within a predetermined range, it is determined that the patient carrying the call transmitter is incapable of moving, the camera capable of imaging the patient is identified based on the receiver ID, and an image transmitted from the camera 4. The nurse call system according to claim 2, wherein: is displayed on the base unit. 5.   An image transmitted from the camera by specifying a camera capable of imaging the patient based on the receiver ID when it is determined from the position information of the call transmitter that the patient carrying the call transmitter has approached a dangerous area. The nurse call system according to any one of claims 2 to 4, wherein the master unit is displayed on the base unit.   Identifying a camera that can image a patient carrying the call transmitter based on the position information of the call transmitter, and causing the parent device to display an image transmitted from the camera. The nurse call system according to any one of claims 2 to 5, characterized in that:   Identifying a plurality of cameras capable of imaging the patient based on the location information of the call transmitter, and displaying the images transmitted from the plurality of cameras on the parent device using a multi-window system such as a pop-up The nurse call system according to any one of claims 2 to 6, wherein:   The adapter adds a radio transmission flag to the call radio wave received from the call transmitter via the receiver and sends it, and when the master unit receives the radio transmission flag, the adapter calls from the call transmitter. The nurse call system according to any one of claims 1 to 7, wherein the information is transmitted to the call communication system.   The nurse call system according to any one of claims 1 to 8, wherein the adapter is connected to the receiver using a channel of an empty bed. The base unit includes a radio base unit (6a) connected to the radio wave reception system and a call communication base unit (6b) connected to the call communication system. The nurse call system according to any one of claims 9 to 9.

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