JP4753299B2 - Abnormal sound monitoring nurse call device - Google Patents

Description

The present invention relates to a nurse call device used in a psychiatric ward or a geriatric ward of a hospital, and more particularly to an abnormal sound monitoring nurse call device that can detect and automatically report abnormal sounds in a hospital room or a room.

An abnormal sound monitoring nurse call device that can detect and automatically notify a nurse call parent device when a patient or a resident violates or makes a loud voice in a hospital room or a room is known.

For example, Patent Document 1 describes an invention in which a call path between a nurse call parent device and a hospital room is formed when the detected volume level is higher than a predetermined level during normal conversation. .
.... JP 2001-127893 A

In the sick room and living room, various miscellaneous sounds are generated in addition to the conversation between patients. One of the typical items that occurs on a daily basis is broadcast audio such as in-hospital events and meal guidance generated from indoor dedicated speakers connected to the broadcasting facilities in the building. There is also an alarm buzzer sound from a medical device connected to the patient.

In many cases, the volume level of the broadcast sound and the alarm buzzer sound is higher than a predetermined level during normal conversation even though the volume level is normal. In the nurse call device described in Patent Literature 1, it is problematic to detect and alarm the volume level of these normal sounds as an abnormal volume level.

The present invention solves the above-mentioned problems, and an abnormal sound monitoring nurse call device that does not malfunction due to sound generated by normal use of indoor electronic devices (hereinafter referred to as normal sound) such as in-house broadcast sound and alarm buzzer sound. It is an issue to provide.

The present invention includes a sound level determination unit that operates when sound of a certain level or more is input from a monitor sound microphone, an input sound recognition unit that recognizes sound input from the monitor sound microphone as an input sound pattern, and broadcasting in the hall An avoidance sound storage unit that stores normal sounds such as a warning sound and an alarm buzzer sound as an avoidance sound, and an avoidance sound pattern in which an input sound pattern output from the input sound recognition unit is stored in the avoidance sound storage unit A sound coincidence determination unit that operates when they are coincident or similar, a coincidence output holding unit that holds a determination output output from the sound coincidence determination unit for a predetermined time determined by the type of avoidance sound, and the sound level determination And an alarm determination unit that is determined to be ON / OFF in a combined state of outputs from the coincidence output holding unit, an output from the sound level determination unit, and an output from the coincidence output holding unit Ikoto in conjunction with the output of the alarm determination unit that operates as a condition, characterized in that to be able to output an alarm signal from the nurse call base unit.

The present invention stores a normal sound such as a warning sound at the start of in-building broadcasting in a hospital room or living room or a buzzer sound generated from an electronic device as an avoidance sound, and monitors the same or similar sound as the avoidance sound. When detected by a sound microphone, alarm output can be prohibited even if the detected volume exceeds the specified volume level and is abnormal, so abnormal sound monitoring nurses that do not malfunction with normal sound such as broadcast warning sound A call device can be provided.

Also, because the alarm prohibition time can be set for each type of normal sound, for example, by registering the sum of the warning sound time and the audio broadcasting time as the warning prohibition time of the warning sound, the warning sound is output and broadcast The alarm action can be forcibly prohibited until the end.

FIG. 1 is a block diagram of an abnormal sound monitoring nurse call device showing a first embodiment of the present invention.

The abnormal sound monitoring nurse call device according to the present invention includes at least one or more nurse call slave devices T1, T2,.

The nurse call cordless handset T1 is installed to monitor the patient state in a hospital room or living room, and the monitor sound microphone 1 that constantly detects the sound generated in the room and the sound collected by the monitor sound microphone 1 The microphone amplifier 2 that amplifies the signal, and whether or not the volume level of the detected sound is abnormal, and if it is determined abnormal, an abnormal sound alarm determination unit that outputs an alarm signal under a certain condition 3.

The alarm determination unit 4 of the abnormal sound alarm determination unit 3 is connected to the microphone amplifier 2 via the sound level determination unit 5 on the input side, and connected to the alarm output terminal (b) on the output side.

Further, the microphone amplifier 2 is connected to the input side of the alarm determination unit 4 via the coincidence output holding unit 6, the sound match determination unit 7, and the input sound recognition unit 8, and the match output holding unit 6 and the sound match determination The avoidance sound storage unit 9 is connected to the unit 7, and one end of the avoidance sound storage unit 9 is connected to the write input terminal (w).

Other external connection terminals include a monitor sound terminal (a) connected to the microphone amplifier 2 and power supply terminals (+) and (E).

The nurse call master M is configured around the control unit 10, and the control unit 10 includes an alarm sound control unit 12 that controls the alarm sound speaker 11, a monitor sound control unit 14 that controls the monitor sound speaker 13, and The channel selection operation / display unit 15, the avoidance sound setting means 16, and the input / output interface 17 are connected to the monitor sound terminals (1a), (2a),. The alarm input terminals (1b), (2b),..., And the common write output terminal (w), power supply terminals (+), (E) are connected.

Next, the operation of the abnormal sound monitoring nurse call device according to the present invention will be described with reference to FIG.
First, conversation sound generated in the vicinity of the patient to be monitored in the living room, that is, for example, around the nurse call cordless handset T1, an alarm sound of a medical device, and the like are collected by the monitor sound microphone 1.
The collected sound signal is amplified by the microphone amplifier 2 and output to the monitor audio terminal (a).

At the same time, the amplified output of the microphone amplifier 2 is input to the sound level determination unit 3 and the input sound recognition unit 8. One sound level determination unit 5 stores therein a reference value for determining the sound volume level, and outputs a level abnormality signal when the level of the input sound signal exceeds this reference value.

On the other hand, the input sound recognition unit 8 recognizes the input sound signal as an input sound pattern. The sound pattern recognition means is a means for preparing filters of multiple frequencies selected as samples individually and capturing the output fluctuations for each sample frequency in time series and digital values, but a commercially available speech recognition processor is used. It can be easily configured.

The sound match determination unit 7 compares the input sound pattern recognized by the input sound recognition unit 8 with one or more avoidance sound patterns stored in the avoidance sound storage unit 9, and if there is a match or similarity, there is a turn. If it does, a match signal is output.

When the coincidence output holding unit 6 receives the coincidence signal from the sound coincidence determination unit 7, the coincidence output holding unit 6 holds the coincidence output for a predetermined time. Here, the fixed time is different depending on the type of the avoidance sound pattern. For example, when the avoidance sound pattern is a broadcast warning sound, it is determined based on the total time of the broadcast start warning sound and the subsequent broadcast time, taking into account the general broadcast time required for in-house broadcasting etc. .

When the avoidance sound pattern is an alarm buzzer sound, the “certain time” varies depending on the continuous sounding and intermittent sounding, but is short as a whole.

In the illustrated example, the timer time is stored in the avoidance sound storage unit 9 in pairs with the avoidance sound pattern. By referring to the avoidance sound storage unit 9, a timer that matches a specific avoidance sound pattern is stored. Time, or “fixed time” can be obtained.

Even if an abnormal signal is output from the sound level determination unit 5, the alarm output from the alarm determination unit 4 is prohibited for a certain time determined by the timer time.

Next, when an abnormal signal is output from the sound level determination unit 5 and there is no output from the coincidence output holding unit 6, an alarm signal is output from the alarm determination unit 4.

In this way, the alarm signal output from the alarm output terminal (b) of the nurse call slave unit T1 is sent to the control unit 10 via the alarm input terminal (1b) of the nurse call master unit 1 and the input / output interface 17. Sent.

When the control unit 1 receives the alarm signal, the control unit 1 controls the alarm sound control unit 12 to sound the alarm sound speaker 11. At the same time, an individual indicator lamp (not shown) for the corresponding line is turned on or blinked in the channel selection operation / display unit 15.

When a channel selection switch (not shown) corresponding to an individual indicator that is lit or blinking is selected, the alarm 10 is stopped by the operation of the control unit 10 and the monitor sound control unit 14 As a result, the sound of the room where the patient is present can be heard from the monitor sound speaker 13.

The channel selection operation / display unit 15 can be designed so that the room sound can be heard freely if the channel selection operation is performed. However, in consideration of the privacy of the patient, the channel selection operation is performed only when an alarm sound is generated. It is desirable to enable it.

As one of the methods, for example, in the nurse call cordless handset T1, an opening / closing unit 18 that can turn on / off the monitor sound line by the output of the sound level determination unit 5 is provided, and there is no abnormal output from the sound level determination unit 5. In some cases, a method of prohibiting the output of monitor sound can be considered.

As another method, in the nurse call master M, it is detected whether or not the alarm sound control unit 12 is operating, and the channel selection operation of the channel selection operation / display unit 15 is effective only when the flag is active. A control method can be considered.

In the illustrated embodiment, by the setting operation of the avoidance sound setting means 16, the data of the avoidance sound pattern including the timer time is transferred from the nurse call master unit M to all nurse call slave units (T1, T2,...). The avoidance sound pattern data and the timer time can be simultaneously rewritten in the avoidance sound storage unit 9 of each nurse call slave device.

By the way, in the first embodiment of the present invention, the case where the abnormal sound alarm determination unit 3 is provided in the nurse call slave device T1 has been shown. However, as shown in the second embodiment shown in FIG. You may provide in the main | base station M.

In the case of the second embodiment, the abnormal sound alarm determination unit 3 does not need to be provided for each line, and therefore has a cost advantage. The second embodiment is generally configured in accordance with the first embodiment, and detailed description thereof is omitted.

In both the first and second embodiments, the abnormal sound monitoring nurse call device is configured by only the nurse call master unit M and the nurse call slave units T1, T2,. Those skilled in the art can add individual corridor lights that can display the alarm status of nurse call slaves T1, T2,... To each room, or change with a call function in the same manner as ordinary nurse call devices. Is easily possible.

1 is a block diagram of an abnormal sound monitoring nurse call device showing a first embodiment of the present invention. FIG. The block diagram of the abnormal sound monitoring nurse call apparatus which shows the 2nd Example of this invention.

Explanation of symbols

T1 Nurse call cord M M Nurse call master 1 Monitor sound microphone 2 Microphone amplifier 3 Abnormal sound alarm determination unit 4 Alarm determination unit 5 Sound level determination unit 6 Match output holding unit 7 Sound match determination unit 8 Input sound recognition unit 9 Avoidance sound Storage unit 10 Control unit 11 Alarm sound speaker 12 Alarm sound control unit 13 Monitor sound speaker 14 Monitor sound control unit 15 Channel selection / operation display unit 16 Avoidance sound setting means 17 Input / output interface

Claims (1)

It has a nurse call master set installed in a nurse center, etc., and a nurse call slave set installed in a hospital room where the monitored person is located, and the abnormal call sound of the monitored person is detected by the nurse call slave set. In an abnormal sound monitoring nurse call device that automatically transmits to the nurse call master unit and generates an alarm signal,
Provided in the nurse call cordless handset, a monitor sound microphone for detecting room sound;
A sound level determination unit that outputs a level abnormality signal when sound of a certain level or more is input from the monitor sound microphone;
An input sound recognition unit for recognizing sound input from the monitor sound microphone as an input sound pattern;
An avoidance sound storage unit for storing normal sounds such as a warning sound at the start of broadcasting in the hall and an alarm buzzer sound as an avoidance sound,
A sound match determination unit that outputs a match signal when the input sound pattern output from the input sound recognition unit matches or resembles the avoidance sound pattern stored in the avoidance sound storage unit;
A coincidence output holding unit that holds the coincidence signal input from the sound coincidence determination unit for a predetermined time determined by the type of avoidance sound;
When the sound level determination unit outputs an abnormal signal and the coincidence output holding unit does not hold a coincidence signal, an alarm signal is output, the sound level determination unit outputs an abnormal signal, and the coincidence output An alarm determination unit that does not output an alarm signal when the holding unit holds a coincidence signal; and
An alarm sound speaker that outputs an alarm sound;
An abnormal sound monitoring nurse call device, comprising: a control unit that causes the alarm sound speaker to ring when an alarm signal is received from the alarm determination unit .