JP3303426B2 - Bedtime equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to whether a sleeping person has a danger of bed soreness, and which part of a bed apparatus is at risk of causing a bed soreness (hereinafter, this part of the sleeping device is referred to as a danger of bed soreness). (Referred to as a bed sore part).

[0002]

2. Description of the Related Art The inventor of the present invention has previously described a sleeping apparatus of this type using a plurality of body movement detecting means and control means to detect body movements of a sleeping person and to respond to each of the body movement detecting means. A sleeping device has been devised that has a storage portion storing a determination threshold value and determines body movement based on turning over, movement of limbs, and the like and fine body movement due to heartbeat, breathing, etc., and notifies the user of danger of bedsore. FIG. 7 shows a block diagram thereof. As shown in this figure, the body motion signals detected by the body motion detecting means 1a to 1e are processed by the signal converting means 2. Then, using the threshold values corresponding to each of the body movement detecting means stored in the storage means 3, the determining means 4 determines whether there is a fine body movement, a rough body movement, or a sleeping person. Was. Then, the time keeping means 5 measures the time during which the determination of the thin body movement for each part of the body movement detecting means attached to the bedding is continued, and outputs the time keeping time,
When the continuation of the flutter exceeds a certain period of time, a notification of a bed sore spot has been made.

[0003]

However, the sleeping apparatus of the above technology has the following problems. Some of the body movements that occur during bedtime include movements that are equivalent to postural changes that can help prevent bed sores that remove continuous local skin compression or improve blood flow deterioration. Detects a body movement that does not prevent bedsores, and erroneously detects a partial body movement that does not prevent bedsores, for example, a body movement that moves only the limbs, as a body movement that prevents bedsores.
Alerts you if you are in a predicted state or have a bedsore
In some cases, it was not performed . The reason for this is that when body movement occurs,
Detection is performed for each part where body movement has occurred regardless of the type of body movement that has occurred, so even if the resulting body movement is a partial body movement that cannot prevent bedsore, a body movement that prevents bedsore occurs. Is determined. Therefore, in the configuration in which determination is possible prevent bedsores in only partial body motion has occurred there is a problem that can not be broadcast as an accurate <br/> bedsore site.

[0004] Detection of snoring while sleeping is required in relation to sleep apnea and also in order for the sleeping person and surrounding people to obtain good quality sleep. However, in the conventional sleeping apparatus, even if snoring is transmitted to the human body as a vibration signal and detected by the body movement detecting means, the body movement is erroneously determined to be a body movement.

[0005] Further, even if convulsions or seizures occur during bedtime and an emergency condition is set, it is determined that the condition is merely a body movement but not an emergency condition.

A first object of the present invention is to compare a detected body movement pattern with a body movement pattern stored in advance to determine body movement equivalent to partial body position change or partial body movement, It is an object of the present invention to provide a bed apparatus capable of detecting a bed sore danger prevention with higher accuracy without erroneously determining a body movement that does not prevent the occurrence of bed sores.

A second object of the present invention is to provide a sleeping apparatus that can determine snoring without erroneously determining body movement when snoring occurs.

[0008] A third object of the present invention is to provide a sleeping apparatus capable of determining an emergency such as seizure or convulsion.

[0009]

In order to achieve the first object of the present invention, a plurality of body movement detecting means provided on a bedding and converting the output of the body movement detecting means into a body movement signal. A signal conversion unit, a storage unit in which a plurality of thresholds corresponding to each of the plurality of body movement detection units are stored in advance, and a body movement based on an output of the signal conversion unit using a threshold obtained from the storage unit. And a body corresponding to each of a plurality of body movement detecting means when various body movements occur.
A body movement pattern storage unit in which a movement occurrence pattern is stored in advance as a body movement pattern, and comparing the body movement pattern stored in the body movement pattern storage unit with the pattern of the determination result of the determination unit to prevent bedsore. Pattern determination means for determining whether or not a body movement equivalent to a postural change becomes, based on the determination results of the determination means and the pattern determination means, if the body movement does not prevent bedsores, to measure the duration thereof,
When it is determined that the body movement is equivalent to a posture change to prevent bedsore, the timer is reset, otherwise the timer is continued, and a signal is output when the measured time exceeds a certain time.

In order to achieve the second object of the present invention, the body movement pattern storage means is provided with a snoring pattern storage means.

In the present invention, in order to achieve the third object, the body movement pattern storage means is provided with an emergency pattern storage means.

[0012]

The present invention operates as follows by the above configuration. A plurality of body movement detecting means disposed on the bedding detects a vibration signal generated by the body movement of the sleeping person. The detected signal is converted into a required body motion signal by the signal conversion means. In the determining means, based on the threshold value corresponding to the body movement detecting means stored in the storage means, to what extent the output of the signal converting means is large, medium, or small of coarse body movement due to rolling over, etc. It determines the type of body movement such as heart movement or breathing, or whether there is a sleeping person or not. A plurality of patterns of the determination results obtained by the determination means are compared with various body movement patterns stored in the body movement pattern storage means to search for a corresponding pattern. For the part determined to be the fine movement by the determination means, the time during which the fine movement is continued is measured by the timing means. Here, if the generated body motion pattern is the same as the body position change, the timing is reset for the part where the body motion has occurred. However, in the case of a partial body movement pattern, the time counting by the time counting means is continued. If the time measured by the time measuring means exceeds a certain time, it is detected as a bed sores part.

When the result of the judgment by the judgment means coincides with the pattern stored in the snoring pattern storage means,
The pattern determination means determines that the pattern is a snoring pattern.

Further, if the pattern matches the pattern stored in the emergency pattern storage means from the result of the determination by the determination means, the pattern determination means determines that the pattern is an emergency pattern.

[0015]

Embodiments of the present invention will be described below. Figure 1 shows the first
FIG. 2 is a block diagram of the embodiment, and FIG. 2 is an explanatory diagram showing a state in which the body movement detecting means of the apparatus is provided on the bedding.

In FIGS. 1 and 2, reference numerals 1a to 1i denote body movement detecting means. Reference numeral 2 denotes a signal conversion means, in which a relay switch 6, a filter 7, an amplifier 8, and an integrator 9 are incorporated. Reference numeral 3 denotes storage means, 4 denotes determination means, 10 denotes body movement pattern storage means, and 11 denotes pattern determination means. 12
Is a bedding (mat) provided with a body movement detecting means.
Reference numeral 3 denotes a control unit having built-in means for performing signal processing.

The operation of the above configuration will be described below. As shown in FIG. 2, on the mat 12, body movement detecting means 1a to 1i are arranged in a matrix. The body movement detecting means is a sensor capable of detecting vibration, and here uses a piezoelectric element. The piezoelectric element is a thin film made of a polymer piezoelectric material such as polyvinylidene fluoride (PVDF), and a flexible electrode film is adhered to both sides. The piezoelectric element is formed into a tape shape. Body movements and turning over,
The piezoelectric element undergoes deformation due to vibrations caused by heart beats or minute body movements caused by breathing, and a voltage is generated by the piezoelectric effect, and a signal is output. This output signal is sent to the signal conversion means 2 and passes through the relay switch 6 and the filter 7,
The signal is amplified by the amplifier 8 and integrated by the integrator 9. Using the threshold value stored in the storage means 3, the signal output from the signal conversion means 2 is used by the determination means 4 to determine whether the signal is due to a coarse movement that has caused a large vibration such as rolling over or body movement, or In particular, it is determined which level of large, medium, or small body movement, fine body movement based on biological signals such as heart rate and breathing, and whether a sleeping person is absent.

FIG. 3 is an explanatory diagram relating to the output signal of the signal conversion means and the judgment of the judgment means. (A)-(C)
Respectively correspond to the signal outputs of the body movement detecting means 1b, 1c and 1h in FIG. The horizontal axis is time, and the vertical axis is output. “A”, “b”, “c”, and “d” on the vertical axis are threshold values stored in the storage unit 3.
The type of body motion is determined based on the threshold. If the output is less than a, it is absent, if it is in the range of ab, fine movement,
If it is in the range of b to c, it is determined to be a small level coarse movement, if it is in the range of c to d, it is determined to be medium level coarse movement, and if it is more than d, it is determined to be large level coarse movement. When a person enters the mat at time t1, the output signals of each of the three body movement detecting means determine that a large-level body movement has occurred in each part. Time t2 to t3
In this case, the signal for judging the fine movement is output, so that the time keeping means 5 measures the duration of the fine movement. At time t3 to t4, a body movement equivalent to the body position change is performed at t5 to t6.
Then a partial movement has occurred. The state of these body movements is shown in FIG. FIG. 4 (A) shows time t3 to t4.
(B) corresponds to the body movement generated at t5 to t6. From left: (a) posture before body movement, (b) posture after body movement, (c)
It is the figure of the body motion pattern which schematized the judgment by the judgment means at the time of body motion. As shown in (A), when the posture that has been lying on the back from t3 to t4 changes to lying down, the pattern determination unit 11
Then, the body movement pattern (c) at this time is compared with the body movement pattern stored in the body movement pattern storage means 12 to determine that a body movement equivalent to the body position change has occurred. Since this is a body movement that prevents bedsores, the timer 5 resets the clock based on the result of this determination. The body movement stops, and time measurement is started again at time t4 when the determination by the pattern determination means 11 is not a body movement pattern equivalent to the body posture change. Next, the body motion generated at times t5 to t6 is a partial body motion in which only the position of the arm has changed as shown in FIG. At this time, a body movement pattern as shown in FIG. The pattern determination means 11 compares the pattern with the body movement pattern stored in the body movement pattern storage means 10 and determines that the movement is partial. this is,
Since the body movement does not prevent bedsores, the time keeping means 5 continues the time keeping in the same manner as the small body movement state. If this time exceeds a predetermined time, the time measuring means 5 notifies the user of a bed sore part.

By the above operation, it is determined by a pattern whether or not the generated body movement is equivalent to a posture change for preventing bedsore, and unless the movement is determined to be equivalent to the body position change, the timing unit 5 determines whether the movement is equivalent to the body movement. , The notification of the bed sore part is made faster and more accurately.

Next, a second embodiment will be described. FIG.
FIG. 9 shows a block diagram of the second embodiment. Reference numerals 1a to 1i denote body movement detecting means. Reference numeral 2 denotes a signal conversion means, in which a relay switch, a filter, an amplifier, and an integrator are built. 3 is storage means, 4 is judgment means, 5 is time measurement means, 10
Is body movement pattern storage means, 11 is pattern determination means, 1
4 is a snoring pattern storage means, and 15 is an arousal stimulus adding means.

The operation of the above configuration will be described below. As shown in the first embodiment, the vibration signals detected by the body motion detecting means 1a to 1i are converted into a body motion signal by the signal converting means 2. The determination means 4 using the determination threshold value stored in the storage means 3
, It is determined whether the movement is due to large, medium, or small coarse movement, fine movement, or whether a sleeping person is absent. When the sleeping person snores, a pattern is obtained based on the determination. However, when the pattern determining unit 11 determines that the snoring pattern is inquired with the snoring pattern stored in the snoring pattern storage unit 14, A snoring signal is output. The awakening stimulus adding means 15 receiving the snoring signal sends a stimulus to stop the snoring of the sleeping person, here a fan is turned to send a wind to the face of the sleeping person.

According to the above operation, it is possible to detect the snoring of the sleeping person without erroneous movement, and to output a snoring signal. Sleepers awakened by fans can stop snoring.

Next, a third embodiment will be described. FIG.
The block diagram of the third embodiment is shown in FIG. Reference numerals 1a to 1i denote body movement detecting means. Reference numeral 2 denotes a signal conversion means, in which a relay switch, a filter, an amplifier, and an integrator are built. 3 is storage means, 4 is judgment means, 5 is time measurement means, 10
Is body movement pattern storage means, 11 is pattern determination means, 1
6 is an emergency pattern storage means, and 17 is an emergency alert means.

The operation of the above configuration will be described below. In the third embodiment, as in the first and second embodiments, a piezoelectric element is used as the body movement detecting means. Body movement detecting means 1a
The vibration signal detected at 1i is converted by the signal conversion means 2 into a body motion signal. Using the determination threshold value stored in the storage means 3, the determination means 4 determines which of large, medium or small is due to coarse body movement, fine body movement, and whether a sleeping person is absent. When a bedridden suffers a seizure or convulsion, the pattern obtained based on the determination is the emergency pattern stored in the emergency pattern storage means 16 in the pattern determination means 11, for example, a life-threatening event such as a heart attack or convulsion. An emergency signal is output when it is determined that the pattern is an emergency pattern by referring to an emergency pattern that is exposed to an emergency. When this emergency signal is received, the emergency warning means 17 emits an emergency sound and makes an emergency contact to a person or place who can deal with an emergency.

[0025] By the above-mentioned operation, the seizure or seizure can be determined to be an emergency state without being erroneously determined to be a mere body movement. It is possible to take action.

[0026]

As described above, the sleeping apparatus of the present invention has the following effects. By comparing the generated body movement pattern with the stored body movement pattern, the body movement to prevent bedsore and the partial body movement that is not so are determined. It becomes possible to detect. Therefore, if it is detected that there is a danger of bedsore, the part of the bedding that is likely to cause bedsore may be vibrated, or it may be ruffled to make it difficult for the sleeper to have a bedsore, or the bedkeeper may be notified of the bedsore to prevent bedsore. Prompt to cause physical movement. In hospitals and multi-family homes for the elderly, information can be gathered in the administration room and special nursing can be provided for sleeping patients who may have bedsores.

Also, since the occurrence of snoring can be detected, it is possible to determine the occurrence of snoring without erroneous occurrence of body movement.

Further, even if an emergency such as a seizure or convulsion such as being exposed to a life crisis occurs, it can be determined as an emergency pattern without being determined as a body movement.

[Brief description of the drawings]

FIG. 1 is a block diagram according to a first embodiment of the present invention;

FIG. 2 is an explanatory diagram showing a state of disposing body movement detecting means of the apparatus.

FIG. 3 is an explanatory diagram relating to an output signal of a signal conversion unit and determination of a determination unit of the apparatus.

FIG. 4 is an explanatory view showing a state of a body movement;

FIG. 5 is a block diagram of a second embodiment.

FIG. 6 is a block diagram of a third embodiment.

FIG. 7 is a block diagram of a conventional bed apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 body movement detection means 2 signal conversion means 3 storage means 4 determination means 10 body movement pattern storage means 11 pattern determination means 14 snoring pattern storage means 16 emergency pattern storage means

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) A61B 5/11 A61B 5/00 101-102 A61G 7/00

Claims (3)

(57) [Claims] A plurality of body movement detecting means provided on the bedding, a signal converting means for converting an output of the body movement detecting means into a body movement signal, and a plurality of body movement detecting means. A storage unit that stores a plurality of threshold values in advance, a determination unit that determines a type of body movement based on an output of the signal conversion unit using a threshold value obtained from the storage unit, and when various body movements occur Body corresponding to each of the plurality of body motion detection means
A body movement pattern storage unit in which a movement occurrence pattern is stored in advance as a body movement pattern, and comparing the body movement pattern stored in the body movement pattern storage unit with the pattern of the determination result of the determination unit to prevent bedsore. Pattern determination means for determining whether or not the body movement is equivalent to body position conversion, and based on the determination results of the determination means and the pattern determination means, if the body movement does not prevent bedsores, the duration thereof is Time,
A bedtime device comprising: a timekeeping means for resetting the timekeeping when it is determined that the body movement is equivalent to a posture change for preventing bedsore, otherwise continuing the timekeeping, and outputting a signal when the timekeeping time exceeds a certain time. 2. A snoring pattern storage means for storing a pattern of a state in which a sleeping person is snoring is provided in a body movement pattern storage means, and the pattern determination means outputs a snoring signal when it is determined that the pattern is a snoring pattern. Item 7. The sleeping device according to Item 1. 3. An emergency pattern storage means in which a body movement pattern storage means stores a pattern of an emergency such as seizure or seizure of a sleeping person, and the pattern determination means determines an emergency pattern when the emergency pattern is determined. The sleeping device according to claim 1 or 2, which outputs the following.