JP2001268251A - Nurse call system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce power consumption in a standby state so as to save power. SOLUTION: Each of adaptors 13a, 13b, etc., is provided with a field program gate array 22, having a communication buffer 22a that wakes up an adaptor CPU 20, activates the power supply of a ceiling microphone amplifier 23 and a ceiling speaker amplifier 24 in a calling or speech state of ceiling microphones 11a, 11b, etc., and ceiling speakers 12a, 12b, etc., from a nurse call master unit 14 and that brings the adaptor CPU into a sleep state and deactivates the ceiling microphones and the ceiling speakers in a standby state, and the nurse call master unit is provided with a field program gate array 31 having a communication buffer 31a that wakes up a master unit CPU 30, activates the power supply of a loudspeaker amplifier 37 in a calling state from a call button via the adaptors and that brings the master unit CPU into a sleep state and deactivates the power supply of the loudspeaker amplifier in a standby state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nurse call apparatus and, more particularly, to a nurse call apparatus which suppresses power consumption during standby and saves power.

[0002]

2. Description of the Related Art Conventionally, a nurse call apparatus having a configuration shown in a block diagram of FIG. 2 has been proposed as this kind of nurse call apparatus.

The nurse call apparatus shown in FIG. 1 includes call buttons 51a,... 54a, 51b,... Provided for each bed in a plurality of rooms a, b,.・ ・
, And ceiling microphones 61a, 61b,... And ceiling speakers 62a, 62b,... Provided on ceilings in the respective rooms a, b,. Are provided in the vicinity of the entrance and exit, and the adapter CPU 70 and the call detection circuit 7
1. An adapter 63a including a field program gate array (hereinafter, referred to as an adapter FPGA) 72, a ceiling microphone amplifier 73, a ceiling speaker amplifier 74, a modulation / demodulation circuit 75, an interface circuit (hereinafter, referred to as an adapter I / F circuit) 76, 63b,... Provided in the nurse station, from the master CPU 80, a field program gate array (hereinafter referred to as master FPGA) 81, a loudspeaker 82, a call display unit 83, a master microphone 84a, and a receiver 84b. Handset 84, channel selection button 85, call end button 86, loudspeaker amplifier 87,
A nurse call base unit 64 including a base unit microphone amplifier 88, a receiver amplifier 89, a modulation / demodulation circuit 90, an interface circuit (hereinafter, referred to as a base unit I / F circuit) 91, and each adapter 63a via an adapter connection trunk line L51. 63b, ...
. Are provided as repeaters for connecting the nurse call master units 64 via the master unit connection trunk line L52, respectively.
.. And the nurse call base unit 64, and a control unit 65 for controlling a call and the like and supplying power.

[0004] The master unit connecting trunk line L52 comprises a pair of control lines L52a, a pair of upstream communication lines L52b, and a pair of downstream communication lines L52c. The transmission direction of various signals (call signal, voice signal, etc.) transmitted from the adapters 63a, 63b,... To the nurse call master 64 via the controller 65, from the nurse call master 64 via the controller 65 Each adapter 63a, 63
.. represent the transmission directions of various signals transmitted to b,.

[0005] In the nurse call apparatus configured as described above, a patient on a bed in a room a, b, ..., here,
When the patient on the bed provided with the call button 51a in the sickroom a presses the call button 51a to call the nurse in the nurse station, the call detection circuit 71 of the adapter 63a detects this operation, and the bed number is detected. The added call activation signal is output to adapter CPU 70. Adapter CPU 70 detects the bed number that forms the call activation signal,
An outgoing call signal to which caller information including the callee information to the nurse call master device 64, the room number of the hospital room a, and the detected bed number is added is output. This uplink call signal is transmitted from the adapter I / F circuit 76 to the adapter connection trunk line L51 via the adapter FPGA 72.

[0006] The controller 65, based on the call destination information and the call source information constituting the up-call signal transmitted through the adapter connection trunk line L51, a nurse from a patient on a bed provided with a call button 51a in the hospital room a. A call to a nurse in the station is detected, a signal transmission path is formed between the adapter 63a and the nurse call base unit 64, and an up-call information control signal in which a ring signal is superimposed on the up-call signal is sent to the master. The data is transmitted to the nurse call master device 64 via a pair of control lines L52a forming the machine connection trunk line L52.

The parent device FPGA 81 of the nurse call parent device 64
Separates the incoming call alert control signal received by the base unit I / F circuit 91 into a call signal and a call sound signal. Master C
The PU 80 turns on a call indicator (not shown) corresponding to the call source of the call display unit 83 based on the call source information forming the call signal separated by the parent device FPGA 81. Also,
The ringing tone signal separated by the base unit FPGA 81 is amplified through the loudspeaker amplifier 87 which is always on, and the loudspeaker 82 sounds a ringing tone.

The nurse in the nurse station confirming the call from the patient in the sickbed provided with the call button 51a in the sickroom a by the lighting of the call indicator light and the sounding of the ringing sound allows the nurse set in the nurse call master unit 64 to set the handset. When picking up and answering the call, the master unit CPU 8 which detects this operation
By the control of 0, power is supplied to the parent device microphone amplifier 88 and the receiver amplifier 89, and each amplifier is turned on. As a result, the parent device microphone 84a and the receiver 84b, which constitute the handset 84 of the nurse call parent device 64,
Master microphone amplifier 88 and receiver amplifier 89 in on state, master FPGA 81, modulation / demodulation circuit 90, master I / F
Circuit 91, upstream communication line L52b forming base unit connection trunk line L2
And the adapter I / F circuit 7 for the downstream communication line L52c, the controller 65, the adapter connection trunk line L51, and the adapter 63a.
6, the ceiling microphone 61a and the ceiling speaker 62 via the modem circuit 75, the adapter FPGA 72, the ceiling microphone amplifier 73 and the ceiling speaker amplifier 74 which are always on.
A communication path is formed between the nurse and the nurse in the nurse station and a patient in the sickbed provided with the call button 51a in the sickroom a.

[0009] Also, a nurse in the nurse station
When the end button 86 of the nurse call base unit 64 is pressed to end the call, the base unit CPU detecting this operation
Under the control of 80, the power supply to the parent device microphone amplifier 88 and the receiver amplifier 89 is cut off, each amplifier is turned off, the above-mentioned communication path is cut off, and the nurse call device is restored to the standby state.

Next, in order for a nurse in the nurse station to call a patient on a bed in the sickroom a, b,... After picking up 84, the channel selection button 85 is appropriately pressed. Base unit CPU 80 that has detected these operations
Supplies power to the master unit microphone amplifier 88 and the receiver amplifier 89 to turn on each amplifier,
It outputs a down call signal to which call destination information to 3a and call source information of the room number of the nurse station are added. This downlink call signal is sent to the parent device I / F via the parent device FPGA 81.
The signal is sent from the circuit 91 to a pair of control lines L52a forming a master unit connection trunk line L52.

The controller 65 includes a main unit connecting trunk line L52 1
A nurse call in a nurse station to a patient on a sickbed in a sickroom a is detected based on a call destination information and a call source information which constitute a down call signal transmitted through the pair of control lines L52a, and a nurse call is performed. A signal transmission path is formed between the base unit 64 and the adapter 63a, and a downlink call notification control signal in which a ring tone signal is superimposed on a downlink call signal is transmitted to the adapter 63a via the adapter connection trunk line L51.

Adapter FPGA 72 of adapter 63a
Separates the downlink call notification control signal received by the adapter I / F circuit 76 into a downlink call signal and a ring tone signal. Adapter CPU 70 detects call source information forming a call signal separated by adapter FPGA 72 (call detection). The ringing tone signal separated by the adapter FPGA 72 is output from the ceiling speaker amplifier 74 which is always on.
The ringing tone is sounded by the ceiling speaker 62a to notify the patient on the bed in the room a of the call from the nurse in the nurse station.

Further, the handset 84 of the nurse call master unit 64 is picked up by the nurse in the nurse station, so that the nurse calls from the patient on the sickbed provided with the call button 51a in the sickroom a when the above-mentioned call is made. In the same manner as when calling a nurse in the station, a parent device microphone 84a and a receiver 84b constituting a handset 84 are provided.
A communication path is formed with the ceiling microphone 61a and the ceiling speaker 62a.
When the two-way communication with the patient on the bed within is established, and the end button 86 is pressed, the above-described communication path is cut off and the nurse call device is restored to the standby state.

[0014]

However, in the conventional nurse call apparatus, the adapter CPU 70, which forms the adapters 63a, 63b,... Of the respective rooms a, b,.
Ceiling microphone amplifier 73 and ceiling speaker amplifier 74,
The base station CPU 80 and the loudspeaker amplifier 87 forming the nurse call base station 64 in the nurse station include the controller 6
5 is constantly supplied, and especially when a large number of the adapters are provided with the increase in the number of hospital rooms, there is a problem that unnecessary power is consumed during standby when operation is unnecessary, which is solved. For this purpose, the power supply unit (not shown) of the controller 65 must be increased in size, and there is a problem that the cost increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks. The adapter has a call notification function and a telephone call only when calling from a nurse in a nurse station to a patient on a sickbed in a hospital room and talking. Activate the control function,
While inactive during standby, only when calling from a patient on the bed in the hospital room to a nurse in the nurse station,
An object of the present invention is to provide a nurse call device that activates a call notification function of a nurse call base unit and deactivates the call notification function during standby to suppress wasteful power consumed during standby and save power. I do.

[0016]

In order to achieve the above object, a nurse call apparatus according to the present invention is provided with a ceiling microphone and a ceiling speaker in a sickroom, and a call button on each bed, and calls from the call button. The call detection circuit of the adapter detects the call, reports the call from the adapter CPU to the nurse call base unit, makes a call between the ceiling microphone and ceiling speaker and the nurse call base unit, and presses the channel selection button of the nurse call base unit. A nurse call device that detects a call with the base unit CPU, reports the call from the base unit CPU to the ceiling speaker, and performs a call between the nurse call base unit, the ceiling microphone, and the ceiling speaker. The adapter CPU is woken up when calling from the machine to the ceiling microphone and ceiling speaker, And a field program gate array having a communication buffer for controlling the power of the ceiling speaker amplifier to be turned on, the adapter CPU to sleep during standby, and the power of the ceiling microphone amplifier and the ceiling speaker amplifier to be turned off. .

Also, the nurse call base unit constituting the nurse call device according to the present invention wakes up the base unit CPU and turns on the power of the loudspeaker amplifier at the time of calling from the call button via the adapter, and at the time of standby, , Master unit CPU
, And a field program gate array having a communication buffer for controlling to turn off the power of the speaker amplifier.

In such a nurse call apparatus, when a nurse in a nurse station calls a patient on a sickbed in a sickroom, and when talking, the adapter CPU serving as an adapter provided near the entrance of the sickroom is woken up.
By supplying power to the ceiling microphone amplifier and ceiling speaker amplifier from the adapter CPU and turning on each amplifier, a ringing tone is sounded from the ceiling speaker and the call function of the ceiling microphone, ceiling speaker, and nurse call base unit is performed. A communication path with the handset is formed, and a two-way communication is established. On the other hand, during standby, the adapter CP
U is put to sleep, the power supply from the adapter CPU to the ceiling microphone amplifier and the ceiling speaker amplifier is cut off, and each amplifier is turned off, so that wasteful power consumed in standby mode can be suppressed and power saving can be achieved. .

Further, when a patient on a bed in a sickroom calls a nurse in a nurse station, a master CPU serving as a nurse call master provided in the nurse station is woken up, and the speaker CPU is amplified from the adapter CPU. When the power is supplied to the amplifier and the amplifier is turned on, a ringing tone is sounded by the loudspeaker. on the other hand,
In standby mode, the main unit CPU is put to sleep, power supply from the main unit CPU to the loudspeaker amplifier is cut off, and the amplifier is turned off, so that wasteful power consumed in standby mode can be reduced. Can be achieved.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment to which a nurse call device according to the present invention is applied will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a nurse call apparatus according to an embodiment of the present invention. The nurse call apparatus is provided for each bed in a plurality of rooms A, B,... .. 4a, 1b,... 4b,.
, Ceiling microphones 11a, 11b,... And ceiling speakers 12a,
2b, ..., adapters 13a, 13b, ... provided in the vicinity of the entrance of each room A, B, ..., a nurse call master unit 14 provided in a nurse station, and an adapter connection trunk line Each adapter 13a, 13b,...
Each of the adapters 13 is provided as a repeater for connecting the nurse call base unit 14 via the base unit connection trunk line L2.
., 13b,... and the nurse call base unit 14, and a control unit 15 for controlling a call and the like and supplying power.

The master connecting trunk line L2 is composed of a pair of control lines L2a, a pair of upstream communication lines L2b, and a pair of downstream communication lines L2c.
Means that each of the adapters 13a, 13b,...
Transmission direction of various signals (call signal, voice signal, etc.) transmitted to the nurse call base unit 14 via the
4 via the controller 15 to each of the adapters 13a, 13b,
.. Represent the transmission directions of various signals transmitted to.

Each of the adapters 13a, 13b,... Has the same configuration, and includes an adapter CPU 20 and call buttons 1a,... 4a, 1b,.
, And a call detection circuit 21 for detecting pressing of the button, and calls from the nurse call base unit 14 to the ceiling microphones 11a, 11b,... And the ceiling speakers 12a, 12b,.
That is, from the nurses in the nurse station, rooms A, B,
... Adapter C at the time of calling and talking to the patient on the bed inside
The control for waking up the PU 20, turning on the power of the ceiling microphone amplifier 23 and the ceiling speaker amplifier 24, which will be described later, putting the adapter CPU 20 to sleep and turning off the power of the ceiling microphone amplifier 23 and the ceiling speaker amplifier 24 in standby mode. Are turned on by power supply from a field program gate array (hereinafter, referred to as an adapter FPGA) 22 having a communication buffer 22a to be executed and the adapter CPU 20 in a wake-up state, and are inputted through the ceiling microphones 11a, 11b,. Microphone amplifier 23 to amplify the audio signal from a patient on a bed
Are turned on by the power supply from the adapter CPU 20 in the wake-up state, the ringing signal from the adapter FPGA 22 or the voice signal from the nurse in the nurse station is amplified, and the ceiling speakers 12a, 12b,.
Speaker amplifier 24 and adapter F
A modulation / demodulation circuit 25 for modulating / demodulating an input / output signal of the PGA 22
And an interface circuit (hereinafter, referred to as an adapter I / F circuit) 26 having a function of transmitting and receiving various signals between the adapter FPFA 22 or the modulation / demodulation circuit 25 and the adapter connection trunk line L1.

The nurse call base unit 14 includes a base unit CPU 3
0 and when calling from the call buttons 1a, ... 4a, 1b, ... 4b, ... via the adapters 13a, 13b, ...
That is, at the time of calling from a patient on the bed in the sickrooms A, B,... To a nurse in the nurse station, the main unit CPU 30 is woken up, and the power of the loudspeaker amplifier 32 described later is turned on. A field program gate array (hereinafter referred to as a master FPGA) 31 having a communication buffer 31a for controlling the sleep of the master CPU 30 and turning off the power of the speaker amplifier 32;
, A loudspeaker 32 that emits a ringing tone for notifying a call from a patient on a bed in the sickrooms A, B,..., A call indicator 33 that illuminates a call indicator lamp corresponding to the caller, and a nurse station. A handset 34 composed of a base unit microphone 34a and a receiver 34b for transmitting and receiving voice signals for establishing a telephone conversation with a patient on a bed in a room A, B,. A channel selection button 35 which is appropriately pressed to call a patient on a bed in A, B,... (Selection call), and a nurse in a nurse station is used to select a bed in a room A, B,. The call end button 36 pressed to end the call with the patient and the power supply from the master CPU 30 in the wake-up state are turned on, and the ringing tone signal from the master FPGA 31 is amplified and expanded. A loudspeaker amplifier 37 to sound at the speaker 32, turned on by the power supply from the base unit CPU30 detects a pick of the handset 34,
Base unit microphone 34a and receiver 3 forming the handset
And a base unit microphone amplifier 38, a receiver amplifier 39, and a base unit FPGA 3
A modulation / demodulation circuit 40 for modulating / demodulating the input / output signal of
An interface circuit (hereinafter, referred to as a parent device I / F circuit) 41 having a function of transmitting and receiving various signals between the PGA 30 or the modulation / demodulation circuit 40 and the parent device connection trunk line L2 is provided.

The operation of the thus configured nurse call apparatus according to one embodiment of the present invention will be described below.

The patient on the bed in the rooms A, B,..., In this case, the patient on the bed provided with the call button 1a in the room A presses the call button 1a to call the nurse in the nurse station. When depressed, the call detection circuit 21 of the adapter 13a detects this operation, and a call activation signal to which the bed number is added is output to the adapter CPU 20. The adapter CPU 20, which has been shifted from the sleep state to the wake-up state by the input of the call start signal, detects the bed number forming the call start signal, calls destination information to the nurse call base unit 14, the room number of the sick room A, and detects the bed number. In addition to outputting an up-call signal to which caller information including a bed number is added, power is supplied to the ceiling microphone amplifier 23 and the ceiling speaker amplifier 24 to turn on each amplifier. This uplink call signal is transmitted from the adapter I / F circuit 26 to the adapter connection trunk line L1 via the adapter FPGA 22.

The controller 15 sends a nurse from a patient on a bed provided with a call button 1a in the sickroom A on the basis of call destination information and call source information forming an upward call signal transmitted through the adapter connection trunk L1. A call to a nurse in the station is detected, a signal transmission path between the adapter 13a and the nurse call base unit 14 is formed, and an up-call information control signal in which a ring signal is superimposed on the up-call signal is transmitted to the master. It is transmitted to the nurse call master unit 14 via a pair of control lines L2a forming the main connection line L2.

The parent device FPGA 31 of the nurse call parent device 14
Separates the incoming call alert control signal received by the base unit I / F circuit 41 into an incoming call signal and a ringing tone signal, and the communication buffer 31a provides a call starting signal for waking up the base unit CPU 30. And output the caller information. The base unit CPU 30 is shifted from the sleep state to the wake-up state by the call start signal from the communication buffer 31a of the base unit FPGA 31, and corresponds to the call source of the call display unit 33 based on the call source information forming the call start signal. The turned-on call indicator (not shown) is turned on, and power is supplied to the loudspeaker amplifier 37 to turn the amplifier on. The ringing tone signal separated by the base unit FPGA 31 is amplified via the loudspeaker amplifier 37 in the ON state, and the loudspeaker 32 sounds a ringing tone.

The nurse in the nurse station confirming the call from the patient on the sickbed provided with the call button 1a in the sickroom A by the lighting of the call indicator light and the sounding of the ringing sound. 34, picking up the call, and responding to the call.
, Power is supplied to the parent device microphone amplifier 38 and the receiver amplifier 39, and each amplifier is turned on.
Thereby, the handset 34 of the nurse call base unit 14
Master microphone 34a and receiver 34b, and master microphone amplifier 38 and receiver amplifier 3 in the ON state
9. Base unit FPGA 31, modem unit 40, base unit I / F circuit 41, upstream and downstream communication lines L2b and L2c forming base unit connection trunk line L2, controller 15, adapter connection main line L1, adapter I / F of adapter 13a Circuit 26, modulation / demodulation circuit 2
5. A communication path is formed between the ceiling microphone 11a and the ceiling speaker 12a via the adapter FPGA 22, the on-state ceiling microphone amplifier 23 and the ceiling speaker amplifier 24, and a nurse in the nurse station and a call button in the sickroom A are formed. Voice signals can be transmitted and received between the patient on the bed provided with 1a and a two-way communication is established.

Also, a nurse in the nurse station
When the end call button 36 of the nurse call base unit 14 is pressed to end the call, the base unit CPU
Under the control of the power supply 30, the power supply to the master unit microphone amplifier 38 and the receiver amplifier 39 is cut off, each amplifier is turned off, the above-mentioned communication path is cut off, and the nurse call device is restored to the standby state. 13a, the adapter CPU 20 of the nurse call base unit 14, and the base unit CPU 3 of the nurse call base unit 14.
0 is restored from the wake-up state to the sleep state, and the ceiling microphone speaker 23 and the ceiling speaker amplifier 24 of the adapter 13a and the loudspeaker amplifier 37 of the nurse call base unit 14 are each turned off.

Next, in order for the nurse in the nurse station to call the patient on the bed in the sickroom, in this case, the patient in the sickroom in the sickroom A, the nurse picks up the handset 34 of the nurse call master unit 14 and then selects the patient. The station button 35 is appropriately pressed. After detecting these operations, the master CPU 30 is shifted from the sleep state to the wake-up state, supplies power to the master microphone amplifier 38 and the receiver amplifier 39, turns on each amplifier, and then calls the adapter 13a. A down call signal to which information and caller information of the room number of the nurse station are added is output to the parent device FPGA 31. This downlink call signal is sent to the parent device I /
The signal is sent from the F circuit 41 to a pair of control lines L2a forming the master unit connecting trunk line L2.

The control unit 15 is connected to the main unit connecting trunk line L2.
Based on call destination information and call source information forming a down call signal transmitted on the paired control line L2a, a call from a nurse in a nurse station to a patient on a bed in a room A is detected, and a nurse call is performed. A signal transmission path is formed between the base unit 14 and the adapter 13a, and a down-call alerting control signal in which a down-call signal is superimposed on a down-call signal is transmitted to the adapter 13a via the adapter connection trunk L1.

The adapter FPGA 22 of the adapter 13a
Separates the downlink paging notification control signal received by the adapter I / F circuit 26 into a downlink paging signal and a ringing signal,
The communication buffer 22a adds caller information to a call start signal for waking up the adapter CPU 20, and outputs the signal. The adapter CPU 20 is an adapter FPGA
In response to a call start signal from the communication buffer 22a, the sleep state is changed to the wake-up state, the caller information is detected, power is supplied to the ceiling microphone amplifier 23 and the ceiling speaker amplifier 24, and each amplifier is turned on. Further, the ringing tone signal separated by the adapter FPGA 22 is amplified through the ceiling speaker amplifier 24 in the ON state, and the ringing tone is sounded by the ceiling speaker 12a, so that a nurse station is provided to the patient on the bed in the hospital room A. Announce a call from a nurse inside.

Also, the handset 34 of the nurse call master unit 14 is picked up by the nurse in the nurse station, so that the nurse can be called from the patient on the bed provided with the call button 1a in the sickroom A at the time of the above upcall. In the same manner as when calling a nurse in the station, a communication path is formed between the parent device microphone 34a and the receiver 34b, which constitute the handset 34, the ceiling microphone 11a and the ceiling speaker 12a, and the nurse in the nurse station and the room A When the two-way call with the patient on the bed is established and the end button 36 is pressed, the above-mentioned communication path is cut off and the nurse call device is restored to the standby state. The CPU 20 and the base unit CPU 30 of the nurse call base unit 14 respectively enter the three states from the wake-up state. While being restored to the state, the ceiling microphone speaker 23 and a ceiling speaker amplifier 24 of the adapter 13a, the loudspeaker amplifier 37 of nurse call base unit 14, respectively become OFF state.

[0035]

As is apparent from the above description, according to the nurse call apparatus of the present invention, a call from a nurse in a nurse station to a patient on a sickbed in a sickroom or a call provided by the adapter only during a call is made. The call notification function and the call control function are activated and inactive during standby, and the call notification function of the nurse call master unit is activated only when a patient on the bed in the hospital room calls a nurse in the nurse station. In addition, by making it inactive during standby, wasteful power consumed during standby can be suppressed, and power can be saved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a nurse call device according to one embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional nurse call device.

[Explanation of symbols]

 A, B, ... Hospital room 1a, ... 4a, 1b, ... 4b, ... Call button 11a, 11b, ... Ceiling Microphones 12a, 12b, ... Ceiling speakers 13a, 13b, ... Adapter 14 Nurse call master unit 20 Adapter CPU 21 Calling detection circuit 22 Field program gate array 22a Communication buffer 23. Ceiling microphone amplifier 24 .. Ceiling speaker amplifier 30. 31 Field program gate array 31a Communication buffer 37 Loudspeaker amplifier

Claims (2)

[Claims] 1. A ceiling microphone (11a, 11b,...) And a ceiling speaker (12) are provided in each room (A, B,...).
a, 12b,...) and a call button (1a,.
a, 1b,... 4b,...), and the call from the call button is performed by an adapter (13a, 13b,.
Of the adapter CPU (2)
From 0), the call is reported to the nurse call base unit (14),
A telephone call is made between the ceiling microphone and the ceiling speaker and the nurse call base unit, and a call from a channel selection button (35) of the nurse call base unit is made to the base unit CPU.
(30) a nurse call device that detects a call from the master CPU and notifies the ceiling speaker of a call, and performs a call between the nurse call master, the ceiling microphone, and the ceiling speaker; When calling from the nurse call base unit to the ceiling microphone and the ceiling speaker, and during a call, the adapter CPU is woken up, and the ceiling microphone amplifier (23) and the ceiling speaker amplifier (24) are turned on to stand by. At this time, the communication buffer (22) for controlling the adapter CPU to sleep and turning off the power of the ceiling microphone amplifier and the ceiling speaker amplifier.
a) Field program gate array (2)
A nurse call device comprising: (2). 2. The nurse call base unit, when calling from the call button via the adapter, the base unit CPU
A communication buffer (31a) for controlling the power of the loudspeaker amplifier (37) to be turned on, the standby CPU to be put to sleep and the power of the loudspeaker amplifier to be turned off during standby. The nurse call device according to claim 1, further comprising a program gate array (31).