TWI718732B - Nursing information system and method thereof - Google Patents

Abstract

The invention provides a nursing information system of caring a status of a user on a mattress. The nursing system comprises: a pressure sensor, disposed in a neighboring location of the mattress to a bed frame which are stacked together, to sense a pressure caused by the user on the mattress, for determining whether the user is on the mattress or not; and a microphone contacting the mattress, for receiving an external sound signal from the mattress or around the mattress, and determine whether the sound signal includes a clap sound signal or not, wherein the clap sound signal is applied by the user on the bed frame or the mattress. When the user is on the mattress and the sound signal includes the clap pressure signal, the system issues an on-bed alarm signal. Or, when the user is not on the mattress and the sound signal includes the clap pressure signal, the system issues a bed-leaving alarm signal or a calling alarm signal.

Description

Nursing notification system and method

The present invention relates to a nursing notification system, in particular to a nursing notification system that detects whether the user sends a signal for help by sensing the beating on the mattress and the bed.

In the existing nursing notification system, the most commonly used is to call the bell, for example, set at the bedside. The method of use is for users on the bed. When they feel unwell, are about to lose consciousness, or need assistance, they can call and ring the bell for emergency help. However, users often turn off the call ring due to poor coordination of body movements or some unconscious movements, resulting in the inability to seek emergency assistance.

Therefore, there is a need for a simple way that does not need to rely on specific handheld devices, but allows users to conveniently seek emergency help, and even turns the mattress into an extension device for calling bells, which is very important to the current medical care system.

In view of this, in order to achieve the above and other objectives, the present invention provides a nursing notification system, which has the advantages of simple operation, convenient use, and no user confusion.

In one aspect, the present invention provides a nursing notification system to assist the nursing user on the mattress. This nursing notification system includes: a pressure sensor, which is installed in the mattress, on the mattress, under the mattress or adjacent to the mattress and a bed frame, used to sense the pressure that the user exerts on the mattress to Determine whether the user is on the mattress; and a sound sensor, which receives external sound signals, and determines whether the sound signals include a beating audio signal applied by the user to the bed frame or mattress. When the user is on the mattress and the sound signal includes a beating audio signal, the nursing notification system sends a bed warning signal; or, when the user is not on the mattress and the sound signal includes a beating audio signal, the nursing notification system sends a bed out warning signal A signal or a warning signal. Both the bed warning signal and the getting out of bed warning signal can remind the caregiver to assist the user. Among them, the sound sensor must be in contact with the mattress or be installed on the mattress, preferably under the mattress, so that it has a better recognition effect. In addition, when the sound sensor is receiving sound, in order to avoid resonance, the outer edge of the sound sensor can be covered with rubber.

In one embodiment, the frequency of the sound received by the sound sensor is included in the sound frequency band with an upper limit of 20000 Hz, which is preferably in the sound monitoring frequency band of 20 Hz to 2000 Hz. The sound frequency band can be divided into sub-sound monitoring frequency bands according to needs, so that the setting of the sub-sound monitoring frequency band can be determined according to actual conditions.

In one embodiment, the nursing notification system can also determine whether the user is on the mattress according to the frequency change of the tapping audio signal.

In one embodiment, the tapping audio signal includes a preset number of tapping tones, such as three, four, five, or other numbers of tapping tones in a row.

In one embodiment, it is determined whether it is the beating sound signal from the user. The pressure change sensed by the pressure sensor can be determined by determining whether it corresponds to the monitoring sound frequency band and the beating rate of the beating tone in the beating audio signal (for example, Beat per minute). When corresponding to the high-amplitude intensity characteristics of the number of multiple beating tones in the beating audio signal, the nursing notification system can determine the user and apply the beating audio signal to the mattress or bed frame. The pressure sensor is used to make auxiliary judgments, mainly the sound-receiving sensor makes the judgment of the beat rate and intensity based on the monitored sound frequency band.

In one embodiment, another method can be used to prevent misjudgment caused by sudden noise in the environment. The nursing notification system also includes an acceleration sensor, which is arranged in the mattress or a bed frame, or in the gap between the stacked mattress and the bed frame. When the vibration change sensed by the acceleration sensor corresponds to the characteristics of high amplitude intensity of the number of multiple beating tones in the beating audio signal, the nursing notification system determines that the user applies the beating audio signal to the mattress or bed frame.

From one point of view, the present invention provides a nursing notification method, including: setting a pressure sensor adjacent to the mattress and the bed frame for sensing the pressure the user exerts on the mattress to determine whether the user is On a mattress; receive external sound signals and determine whether the sound signal includes a beating audio signal applied by the user to the bed frame or mattress; and when the user is on the mattress and the sound signal includes a beating audio signal, The nursing notification system sends a bed warning signal; or, when the user is not on the mattress and the sound signal includes a tapping sound signal, the nursing notification system sends a bed exit warning signal or a person calling warning signal.

The foregoing and other technical content, features, and effects of the present invention can be clearly presented in the following detailed description of the preferred embodiment with reference to the drawings.

FIGS. 1 and 2 show a nursing notification system A100 according to an embodiment of the present invention, which is used to assist in nursing a user P on a mattress M. The nursing notification system includes: a pressure sensor 10, which is arranged adjacent to the mattress M and a bed frame F, for sensing the pressure applied by the user P to the mattress M to determine whether the user P is in bed On the mat M; and a sound sensor 20, which receives the external sound signal S, and determines whether the sound signal S includes a beating audio signal K applied by the user P to the bed frame F or the mattress M, and the beating audio signal K It is the preset single tone form of tapping, which means that the user P asks for help by tapping. When the user P is on the mattress M and the sound signal S contains the tapping audio signal K, the processing unit 30 of the nursing notification system A100 sends a bed warning signal Ab; or, when the user P is not on the mattress M and the sound The signal S includes the tapping audio signal K, and the processing unit 30 of the nursing notification system A100 sends out a bed-out warning signal Ae. Both the bed warning signal Ab and the getting out of bed warning signal Ae can remind the nursing staff to assist the user P. Importantly, the caregiver can still obtain the user's bed-ridden state without frequent visits to the user's bed. The aforementioned sound signal S includes a tapping audio signal K, which represents that the receiving sensor 20 receives an external sound signal S, and includes the frequency, tapping rate, or waveform characteristics of the corresponding tapping audio signal K.

The aforementioned mattress M and a bed frame F are adjacent to the mattress M (for example, the pressure sensor 10 is provided in the mattress M to sense that the user P is lying on the mattress M, and The pressure change in the mattress M), or the gap between the stacked mattress M and the bed frame F (for example, in the nursing notification system B100 of FIGS. 3 and 4, the pressure sensor 10 is located in an air cushion 40 in the gap, The air cushion 40 is compressed between the mattress M and the bed frame F, and the pressure sensor 10 is connected to the pressure change inside the air cushion 40. In this way, the pressure change in the air cushion 40 can be sensed by changing the force of the mattress M.) .

In one embodiment, the beating audio signal transmitted to the pressure sensor 10 by the user P acting on the mattress M, due to the characteristics of the material of the mattress M, the frequency of the sound waves transmitted through the mattress M is slightly lower, such as sound sensing The frequency of the receiver's sound is in the sound monitoring frequency band with an upper limit of 20000 Hz, and it is preferably in the sound monitoring frequency band of 20 Hz to 2000 Hz. The sound frequency band can be divided into sub-sound monitoring frequency bands according to needs, so that the setting of the sub-sound monitoring frequency bands can be determined according to actual conditions, so as to determine whether it corresponds to the beat rate or waveform characteristics of the beat sound signal K.

In addition, after the beating audio signal K applied to the mattress M by the user P is transmitted to the sound sensor 20, its frequency will also vary depending on whether the user P is on the mattress M or not. This change is the change in the dynamic characteristics of the structure of the mattress M due to the force, resulting in a change in the frequency of the beat sound signal K. For example, when the user P is on a mattress, the frequency of the tapping audio signal K received by the sound sensor 20 will be lower than the frequency of the tapping audio signal that the user P is not on the mattress M. In an embodiment, the nursing notification system A100 can also determine whether the user P is on the mattress M according to the frequency change of the tapping sound signal K received by the sound sensor 20.

However, in actual use, some conditions may also occur. For example, in one embodiment, when the user P is not on the mattress M and the sound signal S does not include the tapping audio signal K, it exceeds a predetermined time. This situation may be that the user P rolls out of the bed or has other emergency situations after leaving the bed to go to the toilet. The nursing notification system A100 can also send out a bed-out warning signal Ae based on these situations to remind the nursing staff to assist the user P.

In one embodiment, the tapping audio signal K includes a preset number of tapping tones, such as three, four, five, or other numbers of tapping tones in a row. In one embodiment, the beating rate of the single beating sound is 40 to 90 beats per minute (40 bpm to 90 bpm), and it is preferably 50 to 60 beats per minute (50 bpm to 60 bpm). In other words, the monitoring tapping rate ranges from 40 bpm to 90 bpm, and it is preferably from 50 bpm to 60 bpm. From another point of view, in the tapping audio signal K, there is a time interval between tapping monophonic sounds, and the time interval may be 0.4+/-0.2 seconds.

In order to avoid confusion with sudden noises in the environment, a plurality of tapping tones can reduce the possibility of confusion with sudden noises in the environment, and avoid being misjudged as the tapping sound signal K of the user P. The judging method can be judging whether the change in the amplitude of the sound wave in the sound signal S is consistent with the quantity. When the numbers match, it means that this is the tapping audio signal from user P. In one embodiment, determining the change in the amplitude of the sound wave in the sound signal S may include: a sound wave frequency with a high amplitude intensity must be in the sound monitoring frequency band or sub-sound monitoring frequency band.

If necessary, you can also determine the individual time interval between the tapping sounds according to the user's habits. The tapping audio signal K of the present invention is not limited to a plurality of tapping monotones with a fixed time interval. The time interval of the tapping monotones can be designed differently according to needs, such as a plurality of long-duration tapping monotones. The combination of sound and multiple short-term tapping monophonic sounds can increase the communication content in the tapping audio signal K and further strengthen the prevention of misjudgments caused by sudden noise in the environment. Different time intervals of tapping single tone can represent different messages, reducing the time wasted for caregivers to go back and forth, and caregivers can quickly prepare equipment and proceed according to the information. In addition, patients who use oxygen masks and nasogastric tubes can communicate through such tapping audio signals K, and will not be unable to communicate with nursing staff due to the inconvenience of speaking.

According to the foregoing technical content of the present invention, the method of confirming whether the sound signal includes a tapping audio signal may include: 1. Whether the sound signal is included in the sound monitoring frequency band or sub-sound monitoring frequency band and conforms to the monitoring tapping rate range Tap the audio signal. 2. In the beating audio signal that conforms to the sound monitoring frequency band or sub-sound monitoring frequency band, and monitors the beating rate range, whether the beating tone with high amplitude intensity characteristics is repeated a specific number of times (for example: three times or more). 3. A single tapping tone with high amplitude and intensity characteristics, after confirming a specific number of repetitions, a warning signal (being warning signal or getting out of bed warning signal) is issued. With these methods, it is possible to preliminarily distinguish possible sudden noises in the environment and avoid misjudgments.

According to the present invention, the method of preventing a misjudgment caused by sudden noise in the environment is not limited to the foregoing embodiment. For example, the pressure change sensed by the pressure sensor 10 is not limited to the pressure change caused by whether the user P is on the mattress M. The pressure change may also include the number of the multiple beating tones corresponding to the beating sound signal K. Features of high amplitude intensity. The attenuation caused by the sudden noise passing through the interval of the mattress M in the environment makes the pressure wave intensity far lower than the sound signal intensity of the user P acting on the mattress M and the bed frame F. Sudden noise in the environment is more likely to be isolated by the mattress M, and it is difficult for the pressure sensor 10 to sense the signal. Therefore, it is determined whether it is the tapping audio signal K from the user P, and it can also be determined by determining whether the pressure change sensed by the pressure sensor 10 includes a high amplitude corresponding to the number of tapping tones in the tapping audio signal K. Strength characteristics. When the pressure sensor 10 senses the characteristics of high amplitude intensity corresponding to the number of multiple beating tones in the beating audio signal K, the nursing notification system A100 can determine the user P and apply the beating audio signal K to the mattress M or the bed Frame F.

According to an embodiment of the present invention, another method is provided for preventing misjudgment caused by sudden noise in the environment. Wherein, the nursing notification system C100 includes an acceleration sensor 50, which is arranged on the mattress M or the bed frame F, or in the gap between the mattress M and the bed frame F. When the vibration change sensed by the acceleration sensor 50 corresponds to the characteristics of the high amplitude intensity of the number of beating tones in the beating audio signal K, the nursing notification system C100 determines that the user P applies the beating audio signal K to the mattress or bedstead. Due to the sudden noise in the environment, its energy intensity is difficult to act on the mattress M and the bed frame F separated by a certain distance to produce movement. Therefore, by comparing the sensing results of the acceleration sensor 50 and the sound sensor 20, It can distinguish sudden noises in the environment and enhance the accuracy of sensing.

Referring to Fig. 6, with respect to one of the points of view, the present invention provides a nursing notification method, which includes: setting a pressure sensor adjacent to the mattress and a bed frame for sensing the pressure exerted by the user on the mattress, To determine whether the user is on the mattress (S1); to receive the external sound signal, to determine whether the sound signal contains a beat sound signal applied by the user to the bed frame or the mattress (S2); and when the user is on the mattress When the user is not on the mattress and the sound signal contains a beating signal (S3), the nursing notification system sends a bed warning signal; or, when the user is not on the mattress and the sound signal contains a beating audio signal (S4), the nursing notification system sends a bed-out warning Signal. For a detailed description of one of the steps, please refer to the description of the foregoing embodiments, which will not be repeated here.

In one embodiment, in the aforementioned nursing notification method, after the step of "installing a pressure sensor on the mattress adjacent to a bed frame", and before the step of "sensing the pressure applied by the user on the mattress", It can also include: using an empty mattress to calibrate the pressure sensor for an empty bed, and record the pressure value when the bed is empty.

In one embodiment, an air cushion is arranged in the gap between the stacked mattress and the bed frame, and the pressure sensor is connected to the air cushion to sense pressure changes in the air cushion, thereby sensing the stress state of the mattress. The aforementioned step of "sensing the pressure applied by the user to the mattress" may also include: Compared with the pressure value when the bed is empty, the pressure value of the three consecutive pressure sensing values is significantly higher than the pressure value when the bed is empty. It is determined that the user is on the mattress. If the pressure sensing value rises once or twice, but then drops again, it is determined that the user is not on the mattress.

The present invention has been described above with respect to preferred embodiments, but the above are only examples of the application, and do not limit the application in any form. Although the application has been disclosed in specific embodiments as above, it is not In order to limit this application, any technical personnel familiar with the profession, without departing from the scope of the technical solution of this application, can make use of the technical content disclosed above to make some changes or modifications into equivalent embodiments with equivalent changes, provided that they do not depart from The content of the technical solution of the present application, and any simple amendments, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application, still fall within the scope of the technical solution of the present application.

A100, B100, C100: nursing notification system 10: Pressure sensor 20: Sound sensor 30: processing unit 40: air cushion 50: Acceleration sensor Ab: bed warning signal Ae: Get out of bed warning signal F: bed frame K: Tap audio signal M: Mattress P: User S: Sound signal S1~S4: steps

Fig. 1 is a schematic diagram of a nursing notification system according to an embodiment of the present invention.

Figure 2 shows a schematic diagram of the relationship between the nursing notification system, the user, the mattress, and the bed frame according to Figure 1

Fig. 3 is a schematic diagram of a nursing notification system according to another embodiment of the present invention.

FIG. 4 is a schematic diagram of the relationship among the nursing notification system, the user, the mattress, and the bed frame according to FIG. 3.

Fig. 5 is a schematic diagram of a nursing notification system according to still another embodiment of the present invention.

Fig. 6 is a schematic diagram showing the steps of the nursing notification method according to the present invention.

A100: Nursing Notification System

10: Pressure sensor

20: Sound sensor

30: processing unit

Ab: bed warning signal

Ae: Get out of bed warning signal

S: Sound signal

Claims (10)

A nursing notification system is used to assist in caring for a user on a mattress. The nursing notification system includes: A pressure sensor, located adjacent to the mattress and a bed frame, for sensing the pressure the user exerts on the mattress to determine whether the user is on the mattress; and A receiving sound sensor, receiving external sound signals, and determining whether the sound signals include a beating audio signal applied to the bed frame or the mattress by the user; Wherein, when the user is on the mattress and the sound signal includes the tapping audio signal, the nursing notification system sends a bed warning signal; or, when the user is not on the mattress and the sound signal includes the beating audio signal; Tap the audio signal, and the nursing notification system sends out a bed-out warning signal. The nursing notification system according to claim 1, wherein the frequency of the tapping audio signal is included in a sound monitoring frequency band with a sound frequency band with an upper limit of 20000 Hz. The nursing notification system according to claim 1, wherein the frequency of the tapping audio signal when the user is on the mattress is lower than the frequency of the tapping audio signal when the user is not on the mattress. The nursing notification system according to claim 1, wherein when the user is not on the mattress and the sound signal does not include the tapping audio signal, the nursing notification system sends out the bed exit warning signal after a preset time is exceeded The nursing notification system according to claim 1, further comprising an air cushion arranged in the gap between the stacked mattress and the bed frame, and the pressure sensor is connected to the air cushion to sense the pressure in the air cushion Variety. The nursing notification system according to claim 1, wherein the tapping audio signal includes a plurality of tapping tones, and the tapping tones are separated by corresponding time intervals. The nursing notification system according to claim 6, wherein when the sound signal has a high-amplitude intensity waveform change corresponding to the number of tapping single tones, the nursing notification system determines that the sound signal contains the tapping audio signal. The nursing notification system according to claim 1, wherein when the pressure sensor senses a change in the pressure, a high-amplitude intensity waveform change corresponding to the number of a plurality of beating tones in the beating sound signal, the nursing notification The system determines the beating audio signal applied by the user to the mattress or the bed frame. The nursing notification system according to claim 1, further comprising an acceleration sensor, arranged on the mattress or the bed frame, or arranged in the gap between the mattress and the bed frame when the acceleration The vibration change sensed by the sensor corresponds to the high-amplitude intensity waveform change of the number of beating tones in the beating audio signal. The nursing notification system determines that the user applies the beating to the mattress or the bed frame Audio signal. A nursing notification method is used to assist in nursing a user's state on a mattress. The steps of the nursing notification method include: A pressure sensor is arranged adjacent to the mattress and a bed frame for sensing the pressure applied by the user to the mattress to determine whether the user is on the mattress; Receive an external sound signal, and determine whether the sound signal includes a beating sound signal applied to the bed frame or the mattress by the user; and When the user is on the mattress and the sound signal includes the beating sound signal, the nursing notification system sends a bed warning signal; or, when the user is not on the mattress and the sound signal includes the beating sound Signal, the nursing notification system sends out a warning signal for getting out of bed or a warning signal for calling someone.

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