KR20160080898A - Smart bed system and control method thereof - Google Patents

Smart bed system and control method thereof Download PDF

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Publication number
KR20160080898A
KR20160080898A KR1020140192671A KR20140192671A KR20160080898A KR 20160080898 A KR20160080898 A KR 20160080898A KR 1020140192671 A KR1020140192671 A KR 1020140192671A KR 20140192671 A KR20140192671 A KR 20140192671A KR 20160080898 A KR20160080898 A KR 20160080898A
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South Korea
Prior art keywords
bed
user
information
sensor
sensing
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KR1020140192671A
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Korean (ko)
Inventor
각 허
김형근
공석만
Original Assignee
주식회사 퍼시스
드림비전스주식회사
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Priority to KR1020140192671A priority Critical patent/KR20160080898A/en
Priority to PCT/KR2015/014414 priority patent/WO2016108582A1/en
Publication of KR20160080898A publication Critical patent/KR20160080898A/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/74—Details of notification to user or communication with user or patient ; user input means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/015—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame divided into different adjustable sections, e.g. for Gatch position
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/018—Control or drive mechanisms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/0507—Side-rails
    • A61G7/0524—Side-rails characterised by integrated accessories, e.g. bed control means, nurse call or reading lights
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/0527—Weighing devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2200/00—Information related to the kind of patient or his position
    • A61G2200/30—Specific positions of the patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/30—General characteristics of devices characterised by sensor means

Abstract

A smart bed system capable of driving at least a portion of a bed is disclosed. The smart bed system according to an embodiment of the present invention includes a first sensor unit installed on a cushion of the bed or a support frame supporting the bed; A second sensor unit connected to the support frame of the bed, or apart from the support frame of the bed, except for the first sensor unit; A controller for determining a user state based on the information acquired by the first and second sensor units and generating a control signal based on the determined user state; And a bed driving unit for controlling driving of the at least one part of the bed by the control signal.

Figure P1020140192671

Description

TECHNICAL FIELD [0001] The present invention relates to a smart bed system,

The present invention relates to a smart bed system and a driving method thereof, and more particularly to a smart health care bed system based on a non-angle sensor.

The present invention has been derived from research carried out as part of the global expertise development project of the Ministry of Industry, Trade & Industry and the Korea Industrial Technology Evaluation & Management Service [Project Number: 1711006478, Project: Development of smart healthcare bed based on noncontact type sensor for sensorlessness].

In the modern society, the importance of health care for the elderly and the socially underprivileged is emphasized, and the interest in the long term care environment is increasing for the social welfare. Therefore, the pleasant environment of hospitalization, analysis of the inpatient treatment effect, Development is continuing to improve work productivity.

Functional beds for the elderly and patients, and functional wheelchairs have been steadily introduced. One of them is Korean Patent Laid-Open No. 10-2008-0088247, entitled " Wireless bio-signal monitoring device for mobile body using non-contact piezoelectric sensor ". The prior art includes a configuration in which a non-contact piezoelectric sensor is built in, detects a heartbeat signal and a breathing signal from a cardiac trajectory (BCG) from a sensing sheet, and transmits the detected signal to a mobile communication terminal through a cable.

In this way, technology for real-time monitoring of heart rate and respiration rate of the human body is introduced by using a non-contact piezoelectric sensor such as a heart ballistic sensor, and technology is being developed in order to minimize the inconvenience of patients or users. However, such a non-contact piezoelectric sensor has a problem in that sensitivity is different from person to person and dynamic range is also different from person to person, so that it can not be practically used to all patients or users, and sensitivity is significantly changed according to a patient's posture Depending on the specific posture, the signal may not be detected.

In addition, there was a technique of stopping snoring and apnea by awakening a sleeping user by moving a bed mattress to a conventional functional bed. There is also a technology for detecting a patient's condition through a sensor installed in a bed. These sensors detect the movement of the patient using a piezoelectric sensor, but these techniques do not confirm the specific condition of the patient and the sensor installed in the bed does not know what the surrounding environment of the patient is. Particularly, patients who are uncomfortable to move have difficulty controlling their bowel movements and urination, and often pollute the bed with manure. If the bed is contaminated by manure, it stimulates the skin of the patient located in the bed, A serious problem occurred.

Therefore, it is necessary to provide an effective condition detection means capable of comprehensively recognizing the patient's condition despite the individual differences of the patient. In addition, in order to provide convenience to the patient by recognizing the necessary condition for the patient, There is a need for smart health care technology that can detect and cope with the environment.

Korean Patent Publication No. 2008-0088247 (published on October 2, 2008)

Disclosure of the Invention The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a non-contact type non-obj ective sensor capable of sensing biometric information and movement of sleeping and resting states of a patient and a user, And a smart bed system.

Specifically, the present invention detects a user's state through a posture detection sensor and a biosensor, detects a user's state and surrounding environment through an image sensor and an environment sensor, combines sensed information, .

In addition, the present invention analyzes a bio-signal pattern and allows a current user status to be grasped through a smartphone application for a user and a protector.

The present invention also aims to prevent apnea, snoring and pressure sores of a user by driving part or all of the bed in accordance with the state information of the user comprehensively detected.

According to an aspect of the present invention, there is provided a smart bed system comprising: a first sensor unit installed on a cushion of a bed or a support frame supporting the bed; A second sensor unit connected to the support frame of the bed except for the first sensor unit or installed apart from the support frame of the bed; A controller for determining a user state based on the information acquired by the first and second sensor units and generating a control signal based on the determined user state; And a bed driving unit for controlling driving of the at least one part of the bed by the control signal generated by the control unit.

At this time, the first sensor unit senses the user's posture using at least one of a biosensor and a piezoelectric sensor or a load cell for sensing a bio-signal including at least one of respiration, heartbeat, body weight or body temperature of the user And may include a position detection sensor. That is, the first sensor unit may be an attitude sensor and a state sensor installed in the bed, detects a biological signal (which may include body temperature, if necessary), and uses at least one of the non- The user's posture can be detected from above.

The second sensor unit may include an image sensor for acquiring an observation image for the user and an environment for sensing environmental information including at least one of temperature, humidity, illuminance, noise, or air cleanliness of the space where the bed is located Sensing sensor. That is, the second sensor unit may be connected to the bed, may be installed outside the bed, may detect the surrounding environment information of the space where the bed is installed, and may acquire an observation image of the user on the bed .

The control unit may combine the information acquired by the first sensor unit and the second sensor unit to generate the control signal and the user state information.

At this time, the controller can generate the user state information by synchronizing the bio-signal and attitude information of the user sensed by the first sensor unit and the acquisition time of the observation image acquired by the second sensor unit. That is, since information obtained from the biometric sensor and the attitude sensor may be missing (difference of measurement variables of the individual user or difference of the attitude of the user), the biometric signal and attitude Information can be supplemented to obtain accurate information about the state of the user. Meanwhile, the biometric signal and attitude information synchronized with the observation image may be read, and the biometric signal and the attitude sensing information corresponding to the attitude and the state of the user at that time may be calibrated.

The control unit may also determine whether to drive the at least a portion of the bed based on the determined user state and generate the control signal according to whether the at least a portion of the bed needs to be driven . That is, when the posture of the patient is uncomfortable with respect to the current state (for example, when sleeping in a sitting posture), when a pressure ulcer occurs, or when a pressure ulcer is likely to occur, It is possible to generate a control signal capable of driving some or all of them.

Further, the control unit may control at least one of ambient temperature, humidity, illuminance, noise, and air cleanliness of the space in which the bed is located based on the surrounding environment information.

According to another aspect of the present invention, there is provided a smart bed control method including: a first sensing step of acquiring first sensing information from a first sensor unit installed in a cushion of a bed or a support frame supporting the bed; A second sensing step of acquiring second sensed information from a second sensor unit connected to the support frame of the bed except for the first sensor unit or installed apart from the supporting frame of the bed; A control step of determining a user state based on the information obtained in the first sensing step and the second sensing step and generating a control signal based on the determined user state; And a bed driving step of controlling driving of at least a part of the bed by the control signal.

According to the present invention, it is possible to determine the state of a user and to control a bed by sensing biometric information, attitude information, image information, and bedside environment information of a user from sensors installed inside or outside the smart bed, It is possible to judge the state of the user effectively by analyzing the image information which is difficult to grasp by the existing biosensor. In addition, the present invention can analyze the biological signal pattern and grasp the current living body state through the smartphone application for the user and the protector. In addition, all or part of the bed can be driven periodically or aperiodically to prevent apnea, snoring and pressure sores.

According to the present invention, it is possible to control the environment variable of the space in which the user is located so as to provide the maximum convenience to the user based on the state of the user. That is, it is possible to manage and control the temperature, humidity, illuminance and noise of the space by recognizing whether the user is in a sleep state or awake state. Such management and control facts can be communicated to the user's caregiver or medical staff through various application software such as a smartphone's app.

1 shows an example of a configuration of a smart bed system according to an embodiment of the present invention.
FIG. 2 shows an example of a method of driving a smart bed system according to an embodiment of the present invention.
3 shows an example of a configuration of a smart bed system according to another embodiment of the present invention.
4 shows an example of the configuration of various sensors according to an embodiment of the present invention.
FIG. 5 shows an example of a knowledge-based autonomic management technique of a smart bed system according to an embodiment of the present invention.
Figure 6 illustrates the concept of a smart healthcare platform including a smart bed system in accordance with an embodiment of the present invention.

Other objects and features of the present invention will become apparent from the following description of embodiments with reference to the accompanying drawings.

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

However, the present invention is not limited to or limited by the embodiments. Like reference symbols in the drawings denote like elements. The length, height, size, width, etc. disclosed in the embodiments of the present invention and the drawings may be exaggerated to facilitate understanding.

Hereinafter, a smart bed system and a driving method according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6.

1 shows an example of a configuration of a smart bed system 100 according to an embodiment of the present invention.

Referring to FIG. 1, the first sensor unit 110 may be installed in a support frame that supports a bed or a cushion of the bed. The first sensor unit 110 includes a living body sensor 111 for sensing a living body signal including at least one of a breath, a heartbeat, a body weight, and a body temperature of a user, and a living body position sensor 110 using at least one of a piezoelectric sensor and a load cell And an orientation sensor 112 for sensing the position of the user. The first sensor unit 110 is mainly installed in the bed or in the bed frame so as to grasp the biometric information of the user and the attitude of the user.

The second sensor unit 120 may be connected to the support frame of the bed or may be installed apart from the support frame. The second sensor unit 120 includes an image sensor 121 including a camera capable of capturing an image of a user and a surrounding environment of a space in which a bed is installed such as temperature, humidity, illuminance, noise, And an environment sensing sensor 122 for sensing information. The second sensor unit 120 is installed at a position where the bed can be observed (the image sensor 121), and is installed at a position spaced apart from the bed to detect the user and the user's environment.

The control unit 140 grasps the state of the user based on the information acquired by the first sensor unit 110 and the second sensor unit 120. The control unit 140 determines whether the user is in a sleep state or a rest state based on the information acquired from the first sensor unit, such as breathing, heartbeat, body weight, and body temperature, or detects a sudden change in body temperature, It is possible to know that there is. Or the user may be aware of abnormal signs such as snoring, coughing, or asthma attacks. As described above, the first sensor unit 110 can grasp the state of the user through the bio-signals, while the posture sensor 112 can sense the change of the posture of the user through the change of the sensed load. Basically, you can figure out whether a user is lying down or sitting down, and if you are lying down, you can figure out whether you are still maintaining one posture. In addition to the posture change, when the load or the posture change occurs simultaneously in a short time, it is possible to grasp that the user is in a state causing the seizure. In addition to the above embodiment, when the user is suffering from respiration, .

The control unit 140 can determine the appearance of the user and the surrounding environment conditions of the user and the bed from the information acquired by the second sensor unit 120. [ The second sensor unit 120 can detect the state of the bed environment and the external change of the user through the image sensor 121 and the environment sensor 122 installed apart from the bed. In particular, it is preferable that the image sensor 121 is installed at a position higher than the user. The environmental sensing sensor 122 senses the surrounding environment information including at least one of temperature, humidity, illuminance, noise, and air cleanliness of the bed and the vicinity of the bed, and analyzes the ambient environment information by the controller 140 to provide a pleasant environment to the user . The image sensor 121 can be used to grasp the external change of the user. Particularly, when the user causes seizures or dyspnea, the first sensor unit 110 can sense the same, but since external symptoms such as skin changes or bleeding are difficult to be detected only by biological signals, The user can more effectively grasp the inconvenience. Also, users who are mostly alone at night may have security problems, and emergency situations may arise in the absence of a guardian. In this case, the user can always observe the user due to the image sensor 121, and can recognize the urgency of the user even in the absence of a guardian.

The control unit 140 may determine the state of the user by combining the information acquired by the first sensor unit 110 and the second sensor unit 120. [ In the above description, the state of the user is obtained from the information obtained by each sensor unit, but the user state information can be collectively monitored by combining the information acquired by each sensor unit, thereby making it possible to comprehensively monitor the user state. I can get off. An embodiment for determining the state of the user by combining the information acquired by each sensor unit will be described later.

If the control unit 140 determines that the user needs to drive a part of the bed, the control unit 140 generates a control signal for driving the bed and transmits the control signal to the driving unit 130. The driving unit 130 may drive a part of the bed by an electric actuator and may drive the bed in accordance with a control signal transmitted from the control unit 140. [ A portion of the bed that can be driven by the driving unit 130 may be driven to control the angle of the back portion or to bend the knee so that the user can stand up the waist, and it is preferable that the cushion unit can be driven up and down and left and right. As such, the driving method and the position can be variously changed and are not limited thereto.

The smart bed of the present invention includes a bed heating device, a temperature and humidity control device, a lighting control device, and a sound device that can be controlled by the control part 140, such as a device for the bed environment. Therefore, the control unit 140 controls the surrounding environment of the bed by grasping the state of the user by combining the information acquired by the first sensor unit 110 and the second sensor unit 120, or transmits a control command to the driving unit 130 The bed can be driven and driven to suit the user's convenience. In one embodiment, when the attitude sensing sensor 112 senses that a load is concentrated on a specific part and senses that the illuminance is bright from the environment sensing sensor 122, the control unit 140 combines the two information, Can sit down and read or rest. At this time, if the user lowers the illuminance and lie down, the user can grasp the intention to take the sleep, thereby reducing the volume of the sound device or controlling the temperature and humidity control device, thereby creating an environment that is helpful for sleeping. When the first sensor unit 110 and the second sensor unit 120 sense the sleep state of the current user when the user is asleep during reading or resting, the control unit 140 lowers the illuminance or controls the driving unit 130 The bed can be driven so that sleep can be taken comfortably by sending commands.

The control unit 140 may receive the information that the user has left the bed from the orientation sensor 112 and the image sensor 121, Since the operation information of the apparatus is obtained periodically, it is possible to learn the user's rest by learning the bio-signal pattern, and at the same time, control the power of the light intensity controller and the heater, which are not used at rest.

In another embodiment, when the user suffers a skin disease such as a pressure ulcer, the control unit 140 may transmit the control signal to the driving unit 130 periodically or non-periodically to prevent the pressure ulcer by driving the bed. The fact that the user suffers a pressure ulcer can be confirmed through the image sensor 121. Alternatively, when the user senses the first sensor unit 110 and the user is unable to move easily and maintains the lying position for a long time, a control signal is transmitted to the driving unit 130 at regular intervals to drive the bed , The user may be instructed to slightly change the posture.

And a configuration for communicating the status of the user to the caregiver or the nurse wirelessly by having a communication means that can be controlled by the control unit 140. [ The communication means can be installed inside or outside the bed, and there is no restriction on the installation method, but it is preferable that the communication means is externally provided to facilitate wireless communication. The communication means can transmit the status information of the user generated by the control unit 140 to the predetermined counterpart device. It sets up the recipient as a guardian and can receive the status information of the user in cooperation with the smartphone application of the guardian. When the user wants to call the nurse or the guardian, it is used to call the nurse or the guardian by communicating the call information . Also, by communicating the image information sensed by the image sensor 121, the guardian or the nurse can grasp the state of the user from a long distance. Such communication of the image information can inform the first sensor unit 110 of information (trauma such as bleeding caused by a wound, security of the user) and a state of appealing the user by the first sensor unit 110, It can help to grasp. In such an emergency situation, the call signal and the status information can be automatically transmitted to the nurse or the caregiver even if the user does not call. In the case of the critical patient, the status information can be transmitted periodically or noncircularly so that the caregiver and the nurse can manage it from time to time .

The control unit 140 may generate the user state information by synchronizing the bio-signal and attitude information of the user sensed by the first sensor unit 110 with the acquisition time of the observation image acquired by the second sensor unit 120 have. That is, since the information obtained from the biometric sensor 111 and the posture sensor 112 may be missing some information, the biometric signal and the posture information are supplemented through the information of the synchronized observation image, Information can be obtained. The biometric sensor 111 and the posture detection sensor 112 are influenced by the measurement depending on the body characteristics of the user such as the user's key, body weight, body fat percentage, etc. Also, Results and sensitivity. Therefore, when the signals of the biometric sensor 111 and the posture detection sensor 112 are weak, it is necessary to perform a synchronized photographing of the image sensor 121 or the like in order to compensate for whether the signals are viewed as noise or as a meaningful measurement result. Video information can be utilized. That is, when the control unit 140 identifies the operation or state of the user that can be recognized through the photographed image by correlating the sensing signal pattern of the first sensor unit 110 at the time of synchronization with the photographed image, When a pattern similar to the detection signal pattern of the user 110 is measured again in the future, the user may perform the identified operation or assume that the user is in the identified posture.

Further, the bio-signal and attitude information synchronized with the observation image may be read and the bio-signal and attitude detection information corresponding to the attitude and the state of the user at that point of time may be calibrated.

In addition, the control unit 140 determines whether the at least one portion of the bed is required to be driven based on the determined user state, and generates the control signal according to whether the at least one portion of the bed needs driving can do. That is, when the posture of the patient is uncomfortable with respect to the current state (for example, when sleeping in a sitting posture), when a pressure ulcer occurs, or when a pressure ulcer is likely to occur, It is possible to generate a control signal capable of driving some or all of them. For example, when the user is asleep (in a state in which a part of the bed is folded and the user is provided with a suitable posture for sitting), the user is asleep according to the detection result of the first sensor unit 110 (The posture of the user can be recognized from the posture detecting sensor 112 or can be confirmed through the folded form of the driving part of the bed). In order to alleviate the inconvenience of the user, the control unit 140 drives the driving unit of the bed through the control signal to unfold a part of the folded bed so as to guide the user to a lying position. At this time, the controller 140 can continuously monitor whether the user lays down in a comfortable posture without waking up the user through the feedback of the biometric sensor 111, the posture sensor 112, and the image sensor 121 And feedback information of the sensors 110 and 120 can be utilized to generate control signals, such as limiting the speed at which a bed is driven through a feedback process.

The following description of the smart bed driving method of FIG. 2 illustrates the above-described apparatus configuration of FIG. 1 in a stepwise manner. The operation and effects of each step are the same as that of FIG.

FIG. 2 shows an example of a smart bed driving method according to an embodiment of the present invention. Referring to FIG. 2, a first sensing step (S200) is a step of acquiring information sensed by a first sensor unit installed on a cushion part of a bed or a support frame supporting a bed. In this case, the first sensor unit 110 may include at least one of a biosensor 111 for sensing a biological signal including at least one of a breath, a heartbeat, a body weight, and a body temperature of the user, a piezoelectric sensor, And an attitude detection sensor 112 for sensing the attitude of the user.

The second sensing step S210 is a step of acquiring information from a second sensor unit connected to the support frame of the bed or installed apart from the support frame of the bed. At this time, the second sensor unit 120 senses the surrounding environment information including at least one of the image sensor 121 for acquiring an observation image for the user and the temperature, humidity, illuminance, noise, And an environment sensing sensor 122 for sensing the environment.

The user state determination and control step S230 is a step of determining and controlling the user state based on the information obtained in the first sensing step S210 and the second sensing step S220. At this time, the information obtained in the first sensing step (S210) and the second sensing step (S220) are combined to generate control signals and user environment information. Here, the control signal and the user environment information are the same as the control signal and the user environment information described in the description of FIG. At this time, if it is necessary to control the bed as a result of generating the user environment information in the step, it is preferable that the surrounding environment variable including at least one of temperature, humidity, illuminance, noise, Can be controlled.

The bed driving step S230 is a step of controlling the driving of a part of the bed by the driving unit 130 by transmitting the control signal generated in the user state determination and control step S230 to the driving unit 130. [ The driving unit 130 may drive a part of the bed by an electric actuator and may drive the bed in accordance with a control signal transmitted from the control unit 140. [ A portion of the bed that can be driven by the driving unit 130 may be driven to control the angle of the back portion or to bend the knee so that the user can stand up the waist, and it is preferable that the cushion unit can be driven up and down and left and right. As such, the driving method and the position can be variously changed and are not limited thereto.

3 shows an example of the configuration of a smart bed system 300 according to another embodiment of the present invention.

Referring to FIG. 3, the smart bed system 300 may include a first sensor unit 310 installed on a bed frame, that is, a sensor unit for sensing human body information, and a second sensor unit 320 installed outside the bed. I.e., a sensor for sensing environmental information of the space in which the bed is located.

The first sensor unit 310 can sense the heart rate / breathing rate, detect the sleeping state, and monitor whether the user / patient is separated from the bed and increase / decrease in body weight. The second sensor unit 320 can measure the temperature, the humidity, and the illuminance of the space, and can provide information on whether or not a pleasant environment is generated by sensing the noise. Meanwhile, although the temperature is shown as measuring the temperature of the space, the temperature sensor may be attached to the bed mattress to sense the temperature of the bed mattress directly delivered to the user / patient.

The control unit 340 performs healthcare / sleep monitoring, controls the driving unit of the bed, and is operable with an external interface device such as the control pad 350. The collected and analyzed information can be directly delivered to the server, processed / edited, and transmitted to the server.

The control pad 350 is an interface device for controlling each component of the bed via the control unit 340 of the smart bed system 300. A healthcare report or a sleeping report of the user / patient from the control unit 340, and may provide a UI menu capable of controlling bed driving. A user, an assistant, or a medical staff can confirm necessary report information through the control pad 350, and can transmit a command for driving the bed to the control unit 340 through the UI menu.

The server 360 of the smart health care system means a server device capable of a comprehensive monitoring service. A user or an assistant's command inputted by the control pad 350 or the like generated by the control unit 340 is stored in the server 360 so that the user / State and healthcare history can be managed in a comprehensive manner.

4 shows an example of the configuration of various sensors according to an embodiment of the present invention.

4, the piezoelectric sensor 311 included in the first sensor unit 310, the acoustic sensor 322 included in the second sensor unit 320, and the environment included in the second sensor unit 320, An example of sensing of the sensor 323 is shown.

The piezoelectric sensor 311 can detect a breathing signal, a heartbeat signal, and the like from a minute signal deviation deviating from the original signal and extract it as a living body signal.

The acoustic sensor 322 analyzes the sensed sound signal in the time domain and the frequency domain to identify the snoring of the user / patient, speech, and the like, as well as recognize the external construction site noise.

4, analyzes the sensed result of each sensing signal, synthesizes the user's biomedical signal, the attitude sensing information, and the surrounding environment information, and the controller 340 can infer reason for the mode of the user. For example, the user's biological signal information indicates a state in which the user is slightly sleeping. The posture information indicates that the user is in a state of turning over the body. If the acoustic sensor 322 indicates that the ambient noise is above a certain reference level, It is possible to deduce that the user's sleep is hampered by the noise of the user. Or when the user turns his / her body, the user can not get to sleep. According to the surrounding environment information, the noise is smaller than the reference value, the illuminance is higher than the nighttime reference value, or the predetermined reference temperature or humidity can provide a comfortable sleeping environment If it is outside the range, the controller 340 may adjust the illuminance, temperature, or humidity of the space in which the bed is installed to help a comfortable sleep of the user.

FIG. 5 shows an example of a knowledge-based autonomic management technique of a smart bed system according to an embodiment of the present invention.

Referring to FIG. 5, the sensor units 510 and 520 may include a bio-signal sensor, a posture detection sensor, and a peripheral environment sensor as described above. The effector 530 will be driven by a control signal of a control unit (not shown) as a driving unit of the bed. In this case, the control signal is generated by reflecting the sensing information as described above.

The concept of knowledge-based autonomic manager 540 is shown in FIG. That is, the administrator 540 can acquire status information on the user / patient by monitoring and analyzing the user's / patient's biological signals, attitude information, and surrounding environment information. Thereafter, the administrator 540 establishes a plan for improving the user / patient condition, and generates a control signal in accordance with the plan to execute the plan.

For example, if analysis of the state information indicates that there is a need to prevent a pressure ulcer or to induce a user / patient to change their posture to assist the patient / patient's sleep, A plan is established. Thereafter, a control signal is generated in accordance with the schedule, and a driving section of the bed is driven to execute a plan to change the posture of the user / patient.

Planning and implementation are not only limited to the driving portion of the bed, but may also relate to factors that can affect the environmental variables of the space around the bed, such as lighting, air conditioning, air conditioner operation;

Also, the autonomic manager 540 can use the accumulated knowledge DB in the process of establishing and executing the plan through the monitor and analysis results. For example, it can be reflected in analyzing the sensed information currently sensed by analyzing the user's / patient's past state history and past behavior history, and can be applied to similar monitoring and analysis results, You can use the feedback report on the outcome of the plan to decide whether to plan and run the same plan again, or to change the plan or choose another plan.

Figure 6 illustrates the concept of a smart healthcare platform including a smart bed system in accordance with an embodiment of the present invention.

Referring to FIG. 6, the sleep state monitoring is performed by the sensing steps S200 and S210 shown in FIG. 2, and the biological signal and attitude information are analyzed (S220).

In the sensing steps (S200 and S210), the weight, heart rate, respiration, and movement of the user / patient on the bed can be detected, and the noise in the space around the bed can be monitored. In the analysis step S220, it is possible to identify whether the user / patient is taking a sleeping state, a sleeping state (a state in which sleeping is desired but not comfortable sleeping), a weathering state, a bed deviation, and an emergency situation. At this time, when the user / patient leaves the bed, state information such as whether the user / patient has left the bed by himself / herself or the patient has fallen off the bed can be supplemented through the image sensor.

In the control step S230, the user / patient's health status and emergency status are reflected, so that the call of the doctor / nurse, the illumination control, the height control of the bed, the angle control of the upper seat of the bed, A bed, a bed peripheral, and a space around the bed are executed.

The control step S230 by the control unit and the aspect of the service model appearing as the execution result thereof are also shown in Fig. The user service is a service model for a user / patient, and a bed control mode for controlling a bed, a health monitoring function, and additional functions such as a call, illumination control, and alarm can be provided.

The caregiver service includes an indoor environment inquiry service that can monitor the environmental variables of the indoor space where the user / patient is located, a user status service that can monitor the user status, a health level inquiry service (whether sleeping, And the like).

The manager service may include a function of providing a list of the user / environment integrated management function and the service status (integrated management of a plurality of smart beds and users).

The smart bed control method according to an embodiment of the present invention may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

Claims (15)

A smart bed system capable of driving at least a portion of a bed,
A first sensor unit installed on a cushion of the bed or a support frame supporting the bed;
A second sensor unit connected to the support frame of the bed, or apart from the support frame of the bed, except for the first sensor unit;
A controller for determining a user state based on the information acquired by the first and second sensor units and generating a control signal based on the determined user state; And
A bed driving unit for controlling driving of the at least one part of the bed by the control signal;
A smart bed system including The method according to claim 1,
Wherein the first sensor unit comprises:
A biological sensor for sensing a biological signal including at least one of respiration, heartbeat, body weight, and body temperature of the user; And
And an orientation sensor for sensing the orientation of the user using at least one of a piezoelectric sensor and a load cell. The method according to claim 1,
Wherein the second sensor unit comprises:
An image sensor for acquiring an observation image for the user;
And an environmental sensor for sensing environmental information including at least one of temperature, humidity, illuminance, noise, and air cleanliness of the space in which the bed is located. The method according to claim 1,
Wherein,
Wherein the control unit generates the control signal and the user state information by combining the information obtained by the first sensor unit and the second sensor unit. 5. The method of claim 4,
The first sensor unit senses the user's biological signal and posture,
Wherein the second sensor unit acquires an observation image for the user,
Wherein the controller generates the user state information by synchronizing the bio-signal and attitude information of the user sensed by the first sensor unit with the acquisition time of the observation image acquired by the second sensor unit, . The method according to claim 1,
The control unit
Wherein the controller is configured to determine whether to drive the at least one portion of the bed based on the determined user state and to generate the control signal according to whether the at least one portion of the bed needs to be driven. Bed system. The method of claim 3, wherein
Wherein,
Wherein the controller generates a control signal for controlling a peripheral environment variable including at least one of temperature, humidity, illuminance, noise, or air cleanliness of the space in which the bed is located based on the surrounding environment information. system. A smart bed control method capable of driving at least a portion of a bed,
A first sensing step of acquiring first sensed information from a cushion part of the bed or a first sensor part provided on a support frame supporting the bed;
A second sensing step of acquiring second sensed information from a second sensor unit connected to the support frame of the bed except for the first sensor unit or installed apart from the supporting frame of the bed;
A control step of determining a user state based on the information obtained in the first sensing step and the second sensing step and generating a control signal based on the determined user state; And
A bed driving step of controlling driving of at least a part of the bed by the control signal;
/ RTI > 9. The method of claim 8,
Wherein the first sensing step comprises:
A biological detection step of detecting a biological signal including at least one of respiration, heartbeat, body weight, and body temperature of the user; And
An attitude sensing step of sensing the attitude of the user using at least one of a piezoelectric sensor and a load cell
/ RTI > 9. The method of claim 8,
Wherein the second sensing step comprises:
An observation image acquiring step of acquiring an observation image for a user; And
An environment sensing step of sensing ambient environment information including at least one of temperature, humidity, illuminance, noise, or air cleanliness of a space where the bed is located;
/ RTI > 9. The method of claim 8,
Wherein the control step comprises:
Wherein the control signal and the user state information are generated by combining the first sensing information and the second sensing information obtained in the first sensing step and the second sensing step. 12. The method of claim 11,
The first sensing step senses the user's bio-signal and posture,
Wherein the second sensing step acquires an observation image for the user,
Wherein the control step generates the user state information by synchronizing the sensed user's bio-signal and attitude information with the acquisition time of the observation image. 9. The method of claim 8,
The control step
Wherein the controller is configured to determine whether to drive the at least one portion of the bed based on the determined user state and to generate the control signal according to whether the at least one portion of the bed needs to be driven. Bed control method. The method of claim 10, wherein
Wherein the control step comprises:
Wherein the controller generates a control signal that controls at least one of a temperature, a humidity, an illuminance, a noise, and an air cleanliness of a space where the bed is located based on the surrounding environment information. How to drive a bed. A computer-readable recording medium having recorded thereon a program for executing the method according to any one of claims 8 to 14.
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