Patent Publication Number: US-2021169730-A1

Title: Pressure-sensing type massage chair system

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This application claims priority to and the benefit of Korean Patent Application No. 10-2019-0164065, filed on Dec. 10, 2019, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. 
     BACKGROUND 
     1. Field 
     The following description relates to a pressure-sensing type massage chair system, and more particularly, to a pressure-sensing type massage chair system capable of maximizing user convenience. 
     2. Description of Related Art 
     In general, a massage is an act of stimulating the body by using a person&#39;s hand or a massage machine, and normalizing the function of the body, alleviating fatigue, or enhancing health through such stimulation of the body. 
     In recent years, mechanical massage devices have been developed to perform a massage, and among such massage devices, massage chairs that allow a user to be seated comfortably thereon and receive a full-body massage are widely used. 
     Such massage chairs have very complex mechanical characteristics, such as having to give necessary stimuli to the whole body according to the user&#39;s preference, intention, physique, or the like, and communication with the user, that is, a command input method is very important. Conventionally, a simple command input method has been widely used, such as inputting commands by manually pressing a switch or a touch panel. 
     However, such a conventional switch input-based command input method requires a user to turn off or stop a massage device during a massage and then raise his/her upper body to operate a switch or a touch panel. Thus, it is very inconvenient to use and makes it difficult to input an appropriate command at each needed time, which causes problems, such as causing pain to the user or excessively massaging unnecessary areas. 
     In order to solve these problems of the conventional method, techniques for executing a command through voice recognition have been developed as disclosed in Korean Patent No. 10-1886627. 
     However, a massage chair of the conventional voice recognition method also requires a user to verbally speak the entire command containing a verbal word, such as “tap,” “stop,” or the like, an adjectival word, such as “painful,” “refreshing,” or the like, and an adverbial word, such as “strongly,” “softly,” or the like, as well as a place (an objective word) where a massage is to be given, such as hands, feet, back, or the like. Accordingly, a voice command itself is not simple and is very long, which causes a low speech recognition rate and low speed of speech recognition. 
     In addition, since the voice recognition method in which a user must only verbally input a command is not intuitive, it is cumbersome to use, and due to a lengthy command, command input time is increased. 
     SUMMARY 
     This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. 
     An objective of the present invention is to solve or at least alleviate at least one of the above mentioned problems by providing a pressure-sensing type massage chair system in which a command is simply input in response to an intuitive action of a user, such as pressing a particular area where a massage is required using a pressure sensing unit, and this action may be associated with a voice recognition function so that even a very complex command can be very simply, briefly, and quickly input, which makes it possible to significantly increase a command recognition rate and to quickly detect the user&#39;s reaction or pain, thereby allowing the user to control an appropriate massage function very conveniently even during the massage. 
     In one general aspect, a pressure-sensing type massage chair system may include pressure sensing units installed in any one or more of at least a seat portion, footrest portions, a backrest portion, armrest portions, a headrest portion, and combinations thereof and configured to detect movement of any one or more of at least user&#39;s hips, feet, back, hands, head, and combinations thereof, or a change in a user&#39;s center of gravity; a first command signal output unit configured to receive pressure signals from the pressure sensing unit and match the received pressure signals with pre-input first command matching information to output a first command signal corresponding to the first command matching information; and a control unit configured to receive the first command signal from the first command signal output unit and apply any one or more of at least a seat control signal for controlling the seat portion, a footrest control signal for controlling the footrest portion, a backrest control signal for controlling the backrest portion, an armrest control signal for controlling the armrest portions, a headrest control signal for controlling the headrest portion, and combinations thereof. 
     The pressure signals may be distinguished by any one or more of a position of a signal, a strength of a signal, an input time of a signal, a number of consecutive inputs of a signal, a combination of consecutive signals, and combinations thereof and the first command matching information may include information on any one or more of at least command information for each signal position that may correspond to the pressure signal, command information for each signal strength, command information for each signal input time, command information for each number of consecutive signal inputs, command information for each continuous signal combination, and combinations thereof. 
     The pressure-sensing type massage chair system may further include a microphone unit configured to detect a user&#39;s voice or sound made by the user; a second command signal output unit configured to receive a voice signal from the microphone unit and match the voice signal with pre-input second command matching information to output a second command signal corresponding to the second command matching information; and a command sentence information generating unit configured to combine the first command signal and the second command signal to generate command sentence information in which the first command signal is regarded as an objective contextual word and the second command signal is regarded as an operation command contextual word including any one or more of a verbal word, an adjectival word, an adverbial word, and combinations thereof, wherein the control unit may apply any one or more of at least a seat control signal for controlling the seat portion, a footrest control signal for controlling the footrest portion, a backrest control signal for controlling the backrest portion, an armrest control signal for controlling the armrest portions, a headrest control signal for controlling the headrest portion, and combinations thereof according to the command sentence information. 
     The pressure-sensing type massage chair system may further include a command start time detecting unit configured to detect a command input start time, wherein the command input start time detected by the command start time detecting unit is a “body-ON-head-OFF” time point at which the pressure signal is not generated in the pressure sensing unit installed in the headrest portion while the pressure signals are being generated in the pressure sensing units installed in the seat portion, the footrest portions, the backrest portion, and the armrest portions, or a simultaneous input point in time at which at least two or more of the pressure signals are simultaneously input. 
     The pressure-sensing type massage chair system may further include a command input end time detecting unit configured to detect a command input end time, wherein the command input end time detected by the command end time detecting unit is a “body-ON-head-OFF” time point at which the pressure signal is generated in the pressure sensing unit installed in the headrest portion while the pressure signals are being generated in the pressure sensing units installed in the seat portion, the footrest portions, the backrest portion, and the armrest portions, or a simultaneous input point in time at which at least two or more of the pressure signals are simultaneously input. 
     The first command signal output unit may output a full-body massage command signal when at least two or more of the pressure signals are simultaneously generated. 
     The pressure sensing units may include any one or more of at least a first finger sensing unit corresponding to a first finger of the user, a second finger sensing unit corresponding to a second finger of the user, a third finger sensing unit corresponding to a third finger of the user, a fourth finger sensing unit, a fifth finger sensing unit, combinations thereof, and the first command signal output unit may output a forward command signal when a second finger signal or a third finger signal is sequentially input following a first finger signal, and may output a backward command signal when the second finger signal or the first finger signal is sequentially input following the third finger signal. 
     The first command signal output unit may output a first intensity command signal when some of at least a first finger signal, a second finger signal, and a third finger signal of the user&#39;s left hand and combinations thereof are simultaneously input, and may output a second intensity command signal when some of at least a first finger signal, a second finger signal, and a third finger signal of the user&#39;s right hand and combinations thereof are simultaneously input. 
     The control unit may apply a control signal for reclining the chair when a pressure signal is applied to all the pressure sensing units that are installed in the seat portion, the footrest portions, the backrest portion, the armrest portions, and the headrest portion, or when the pressure signal becomes strong. 
     The control unit may apply a control signal for standing the chair upright when a pressure signal is not applied to or is weakened in the pressure sensing unit installed in the backrest portion or the headrest portion while the pressure signals are being applied to the pressure sensing units installed in the seat portion, the footrest portions, and the armrest portions. 
     The pressure-sensing type massage chair system may further include a pain sensing unit configured to determine a moan signal, when applied from the microphone unit during a massage, as a pain signal, wherein the control unit may receive the pain signal from the pain sensing unit and apply a massage intensity control signal for adjusting an intensity of a massage. 
     Other features and aspects will be apparent from the following detailed description, the drawings, and the claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exterior perspective view of a pressure-sensing type massage chair system according to some embodiments of the present invention. 
         FIG. 2  is a block diagram illustrating the pressure-sensing type massage chair system of  FIG. 1 . 
         FIG. 3  is a conceptual signal diagram illustrating an example of command input of the pressure-sensing type massage chair system of  FIG. 1 . 
         FIG. 4  is a conceptual signal diagram illustrating another example of command input of the pressure-sensing type massage chair system of  FIG. 1 . 
         FIG. 5  is a conceptual signal diagram illustrating still another example of command input of the pressure-sensing type massage chair system of  FIG. 1 . 
         FIG. 6  is a conceptual signal diagram illustrating yet another example of command input of the pressure-sensing type massage chair system of  FIG. 1 . 
         FIG. 7  is a conceptual signal diagram illustrating another example of command input of the pressure-sensing type massage chair system of  FIG. 1 . 
         FIG. 8  is a conceptual diagram illustrating an example of a pressure sensing unit of the pressure-sensing type massage chair system of  FIG. 1 . 
         FIG. 9  is a conceptual signal diagram illustrating an example of command input of the pressure sensing unit of the pressure-sensing type massage chair system of  FIG. 8 . 
         FIG. 10  is a conceptual signal diagram illustrating another example of command input of the pressure sensing unit of the pressure-sensing type massage chair system of  FIG. 8 . 
         FIG. 11  is a conceptual signal diagram illustrating still another example of command input of the pressure sensing unit of the pressure-sensing type massage chair system of  FIG. 8 . 
     
    
    
     Throughout the drawings and the detailed description, unless otherwise described, the same drawing reference numerals will be understood to refer to the same elements, features, and structures. The relative size and depiction of these elements may be exaggerated for clarity, illustration, and convenience. 
     DETAILED DESCRIPTION 
     The invention is described more fully hereinafter with references to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure is thorough, and will fully convey the scope of the invention to those skilled in the art. Throughout the drawings and the detailed description, unless otherwise described, the same drawing reference numerals are understood to refer to the same elements, features, and structures. The relative size and depiction of these elements may be exaggerated for clarity, illustration, and convenience. 
     The terms used in the present specification are merely used to describe particular embodiments, and are not intended to limit the present disclosure. As used herein, the singular forms “a,” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     Hereinafter, the embodiments of the present invention will be described with reference to the drawings which schematically illustrate the embodiments. In the drawings, for example, depending on a manufacturing technology and/or tolerance, modifications of illustrated shapes may be expected. Accordingly, it should be understood that the embodiments of the present disclosure are not limited to particular shapes in areas shown in the specification and may include, for example, changes in shape caused during a manufacturing process. 
       FIG. 1  is an exterior perspective view of a pressure-sensing type massage chair system  100  according to some embodiments of the present invention.  FIG. 2  is a block diagram illustrating the pressure-sensing type massage chair system  100  of  FIG. 1 . 
     First, as shown in  FIGS. 1 and 2 , the pressure-sensing type massage chair system  100  according to some embodiments of the present invention may include mainly pressure sensing units S 1 , S 2 , S 3 , S 4 , and S 5 , a first command signal output unit  61 , and a control unit  60 . 
     For example, as shown in  FIGS. 1 and 2 , the pressure sensing units S 1 , S 2 , S 3 , S 4 , and S 5 , may be installed in any one or more of a seat portion  10 , footrest portions  20 , a backrest portion  30 , armrest portions  40 , a headrest portion  50 , and combinations thereof, and may be a type of pressure detection sensor capable of detecting movement of one or more of at least the user&#39;s hips, feet, back, hands, head, and combinations thereof, or a change in the user&#39;s center of gravity. 
     More specifically, for example, as shown in  FIGS. 1 and 2 , the pressure sensing units S 1 , S 2 , S 3 , S 4 , and S 5  may use all types of pressure detection sensors, such as pressure sensing pads, pressure sensing devices, and the like, which are capable of detecting a change in pressure greater than or equal to a predetermined pressure in a part of the above-described seat portion  10 , the footrest portions  20 , the backrest portion  30 , the armrest portions  40 , and the headrest portion  50 , especially, in a specific part of the user. 
     In particular, the pressure sensing units S 1 , S 2 , S 3 , S 4 , and S 5  may be pressure detection sensors that are located on portions to which message pressure does not apply, as well as on portions to which the massage pressure is applied. For example, in the case of the backrest portion  30 , pressure detection sensors may be located at positions out of a massage range of a massage device that massages the user&#39;s back while moving along a back plate, that is, at positions corresponding to both shoulders, or the like. 
     Therefore, regardless of the massage pressure, when a pressure signal higher than or equal to a predetermined pressure is sensed by the pressure sensing units S 1 , S 2 , S 3 , S 4 , and S 5 , this may be recognized as a command. 
     However, the pressure sensing units S 1 , S 2 , S 3 , S 4 , and S 5  are not necessarily limited to the above description or drawings, and, for example, a load measuring device capable of measuring a load installed in an air cylinder connected to an existing airbag or a drive motor that drives an existing message device may be applied. That is, a load may be measured and converted into pressure. 
     In addition, the device for measuring such pressure may use a wide variety of sensors, such as a contact type switch, a tension spring type or compression spring type pressure measurement sensor, and the like, which is installed in the above-described seat portion  10 , the backrest portion  30 , the armrest portions  40 , the headrest portion  50 , or the like. 
     In addition, for example, as shown in  FIGS. 1 and 2 , the pressure sensing units may be installed at various positions, wherein the pressure sensing unit S 1  is positioned corresponding to the seat portion  10 , the pressure sensing unit S 2  is positioned corresponding to the footrest portion  20 , the pressure sensing unit S 3  is positioned corresponding to the backrest portion  30 , the pressure sensing unit S 4  is positioned corresponding to the armrest portion  40 , and the pressure sensing unit S 5  is positioned corresponding to the headrest portion. However, the pressure sensing units are not necessarily limited to the drawings, and may be installed at various positions, such as a position corresponding to the shoulder or the waist. 
     In addition, for example, as shown in  FIGS. 1 and 2 , the first command signal output unit  61  may be a type of circuitry, software, a program, a microprocessor, a central processing unit, an operation unit, a control board, a control board, a computer, various electronic components, or a smart device that is capable of receiving pressure signals from the pressure sensing units S 1 , S 2 , S 3 , S 4 , and S 5  and matching the pressure signals with pre-input first command matching information to output a first command signal corresponding to the first command matching information. 
     In addition, for example, as shown in  FIGS. 1 and 2 , the control unit  60  may be a type of circuitry, software, a program, a microprocessor, a central processing unit, an operation unit, a control board, a control board, a computer, various electronic components, or a smart device that is capable of receiving the first command signal from the first command signal output unit  61  and applying at least any one of a seat control signal for controlling the seat unit  10 , a footrest control signal for controlling the footrest portion  20 , a backrest control signal for controlling the backrest portion  30 , an armrest control signal for controlling the armrest portions  40 , a headrest control signal for controlling the headrest portion  50 , and combinations thereof. 
     Here, the seat portion  10 , the footrest portions  20 , the backrest portion  30 , the armrest portions  40 , the headrest portion  50 , and the like may each include a unit that is provided with various driving devices capable of receiving various control signals from the control unit  60  and massaging the user&#39;s body, that is, an airbag, an air cylinder, a massage device, and a massage device drive motor, and the like, and is capable of performing an operation of tapping, stroking, or rubbing the user&#39;s hips, feet, back (shoulders), hands, head, neck, etc. 
     More specifically, for example, the driving devices may be configured using various linear movement devices. For example, the driving devices may be configured with a ball screw that generates a linear motion force by rotational motion, a servo motor that rotates the ball screw, a guide rail that guides the movement of a manage unit, and the like. Alternatively, various known linear motion devices, such as a linear motion device including a linear motor and a guide rail, or a linear motion device including a plurality of pulleys, a power transmission belt, and a motor, may be applied as the driving device. 
     In addition, all of a solenoid valve that vibrates a plurality of acupressure rollers or massage devices installed at the end of a movable bar and pressurizing the body back and forth, a pneumatic massage unit that pressurizes the body by injecting compressed air to an air bag or supplying air to an air pocket, and the like may be applied as the driving devices. 
     In the operation process of the pressure-sensing type massage chair system  100  according to some embodiments of the present invention, when the user is seated in the massage chair and applies a pressure change greater than or equal to a predetermined pressure on a specific part of the user by, for example, pushing a hand or foot with force, leaning back strongly, or laying his/her head further down, the pressure sensing units S 1 , S 2 , S 3 , S 4 , and S 5  may generate pressure signals, the first command signal output unit  61  may receive the pressure signals and match the received pressure signals with the first command matching information to output a first command signal corresponding to the first command matching information, and the control unit  60  may applies a control signal so that an appropriate massage can be performed on a corresponding part in accordance with the first command signal. 
     More specifically, for example, the pressure signals may be distinguished by any one or more of a position of a signal, a strength of a signal, an input time of a signal, a number of consecutive inputs of a signal, a combination of consecutive signals, and combinations thereof. The first command matching information may include information on any one or more of at least command information for each signal position that may correspond to the pressure signal, command information for each signal strength, command information for each signal input time, command information for each number of consecutive signal inputs, command information for each continuous signal combination, and combinations thereof. 
     Thus, for example, even when the user who is seated in the massage chair and places his/her hand on the armrest portion  40  raises the hand twice in succession, the pressure sensing unit S 4  may sense this motion and execute a command, such as “strongly massage the hand”. On the contrary, even when the user who is seated in the massage chair and places his/her hand on the armrest portion  40  lowers the hand twice in succession, the pressure sensing unit S 4  may sense this motion and execute a command, such as “softly massage the hand”. 
     Accordingly, even without a voice recognition function, a command may be very simply input in response to an intuitive action of the user, such as pressing a particular area of the body where a massage is required using the pressure sensing unit S 1 , S 2 , S 3 , S 4 , or S 5 , and even a very complex command may be simply, briefly, and quickly input, which makes it possible to significantly increase a command recognition rate and to quickly detect the user&#39;s reaction or pain, thereby allowing the user to control an appropriate massage function very conveniently even during the massage. 
     On the other hand, the pressure-sensing type massage chair system  100  according to some embodiments of the present invention may have a voice recognition function to allow a more complex command to be accurately and quickly input. As shown in  FIGS. 1 and 2 , the pressure-sensing type massage chair system  100  according to some embodiments of the present invention may further include a microphone unit M, a second command signal output unit  62 , and a command sentence information generating unit  63 . The microphone M may detect a user&#39;s voice or sound made by the user, the second command signal output unit  62  may receive a voice signal from the microphone unit M and match the voice signal with pre-input second command matching information to output a second command signal corresponding to the second command matching information, and the command sentence information generating unit  63  may combine the first command signal and the second command signal to generate command sentence information in which the first command signal is regarded as an objective contextual word and the second command signal is regarded as an operation command contextual word including any one or more of a verbal word, an adjectival word, an adverbial word, and combinations thereof. 
     Here, the control unit  60  may apply any one or more of at least a seat control signal for controlling the seat portion  10 , a footrest control signal for controlling the footrest portions  20 , a backrest control signal for controlling the backrest portion  30 , an armrest control signal for controlling the armrest portions  40 , a headrest control signal for controlling the headrest portion  50 , and combinations thereof according to the command sentence information. 
       FIG. 3  is a conceptual diagram illustrating an example of command input of the pressure-sensing type massage chair system  100  of  FIG. 1 . 
     As shown in  FIGS. 1 to 3 , in the operation process of the pressure-sensing type massage chair system  100  according to some embodiments of the present invention, when the user is seated in the massage chair and then applies a pressure change greater than or equal to a predetermined pressure on his/her “back” by, for example, pushing his/her back with force, leaning back strongly or lying back, a pressure signal greater than or equal to a reference level is generated only in the pressure sensing unit S 3  of  FIG. 3 , and if, at the same time or subsequently to the pressure signal, the user makes an utterance, such as “give me a massage,” the microphone unit M may detect the utterance. 
     In this case, the first command signal output unit  61  may receive the pressure signal and match the pressure signal with pre-input first command matching information to output a first command signal corresponding to the first command matching information. The second command signal output unit  62  may match the voice signal with pre-input second command matching information to output a second command signal corresponding to the second command matching information. 
     Subsequently, the command sentence information generating unit  63  may combine the first command signal and the second command signal to finally generate command sentence information, such as “give me a massage on my back” in which the first command signal is regarded as an objective contextual word and the second command signal is regarded as at least a verbal word. The control unit  60  may apply the backrest control signal for controlling the backrest portion  30  according to the command sentence information. In addition, a very complex command sentence may be easily recognized and executed quickly through the combination of the pressure signal and the voice signal. 
     Therefore, it is possible to associate a very intuitive motion of the user, such as pressing a particular area of the body where a massage is required, with a voice recognition function, so that even a very complex command can be input very simply, briefly, and quickly, and thereby the command recognition rate may be significantly increased. 
       FIG. 4  is a conceptual signal diagram illustrating another example of command input of the pressure-sensing type massage chair system  100  of  FIG. 1 . 
     As shown in  FIGS. 1 to 4 , speech recognition is not necessarily limited to verbal words, and may also be applied to adjectival or adverbial words, such as “higher”. When the user inputs a voice command, such as “higher,” while a pressure signal is being input only to the pressure sensing unit S 2 , command sentence information, such as “raise my feet higher,” may be generated. 
       FIG. 5  is a conceptual signal diagram illustrating another example of command input of the pressure-sensing type massage chair system  100  of  FIG. 1 . 
     As shown in  FIGS. 1 to 5 , speech recognition is not necessarily limited to verbal words, and may also be applied to adverbial words, such as “strongly”. When the user inputs a voice command, such as “strongly,” while a pressure signal is input only to the pressure sensing unit S 4 , command sentence information, such as “strongly massage my hands” may be generated. 
     Meanwhile, as shown in  FIGS. 1 and 2 , the pressure-sensing type massage chair system  100  according to some embodiments of the present invention may further include a command start time detecting unit  64  capable of detecting a command input start time and a command end time detecting unit  65  capable of detecting a command input end time. 
     Here, for example, the command input start time detected by the command start time detecting unit  64  may be a “body-ON-head-OFF” time point at which the pressure signal is not generated in the pressure sensing unit S 5  installed in the headrest portion  50  while the pressure signals are being generated in the pressure sensing units S 1 , S 2 , S 3 , and S 4  installed in the seat portion  10 , the footrest portions  20 , the backrest portion  30 , and the armrest portions  40 , or a simultaneous input point in time at which at least two or more of the pressure signals are simultaneously input. 
     In addition, for example, the command input end time detected by the command end time detecting unit  65  may be a “body-ON-head-OFF” time point at which the pressure signal is generated in the pressure sensing unit S 5  installed in the headrest portion  50  while the pressure signals are being generated in the pressure sensing units S 1 , S 2 , S 3 , and S 4  installed in the seat portion  10 , the footrest portions  20 , the backrest portion  30 , and the armrest portions  40 , or a simultaneous input point in time at which at least two or more of the pressure signals are simultaneously input. 
     For example, the first command signal output unit  61  may output a full-body massage command signal when at least two or more of the pressure signals are simultaneously generated. 
       FIG. 6  is a conceptual signal diagram illustrating still another example of command input of the pressure-sensing type massage chair system  100  of  FIG. 1 , and  FIG. 7  is a conceptual signal diagram illustrating yet another example of command input of the pressure-sensing type massage chair system  100  of  FIG. 1 . 
     For example, as shown in  FIG. 6 , when a pressure detection signal is input from all the pressure sensing units S 1 , S 2 , S 3 , S 4 , and S 5 , a signal for “command start” in a seated state is determined from these detection signals, so that a command input standby mode may be automatically executed. 
     In addition, the control unit  60  may apply a control signal for reclining the chair when a pressure signal is applied to all the pressure sensing units S 1 , S 2 , S 3 , S 4 , and S 5  that are installed in the seat portion  10 , the footrest portions  20 , the backrest portion  30 , the armrest portions  40 , and the headrest portion  50 , or when the pressure signal becomes strong. 
     Also, for example, as shown in  FIG. 7 , when the pressure detection signals are being input from all the pressure sensing units S 1 , S 2 , S 3 , S 4 , and S 5  and the pressure detection signals disappear only in the pressure sensing units S 4  and S 5 , this may be recognized as an action that the user intends to raise his/her body, so that a “chair-upright” function may be automatically activated. However, the combinations of various signals and combinations of commands are not necessarily limited to the drawings, and a wide variety of combinations may be reserved and be applied. The drawings are merely illustrative for ease of understanding of the present invention. 
     In addition, the control unit  60  may apply a control signal for standing the chair upright when a pressure signal is not applied to or is weakened in the pressure sensing unit S 3  or S 5  installed in the backrest portion  30  or the headrest portion  50  while the pressure signal are being applied to the pressure sensing units S 1 , S 2 , and S 4  installed in the seat portion  10 , the footrest portions  20 , and the armrest portions  40 . 
     Meanwhile, as shown in  FIG. 2 , the pressure-sensing type massage chair system  100  according to some embodiments of the present invention may further include a pain sensing unit  66  that determines a moan signal, when applied from the microphone unit M during a massage, as a pain signal. 
     Here, the controller  60  may receive the pain signal from the pain sensing unit  66  and apply a massage intensity control signal for adjusting the intensity of the massage. 
     Therefore, for example, when the user makes a moaning sound, such as “ah,” “ouch,” “yikes,” or the like, during a massage, the pain sensing unit  66  may detect the moaning sound and perform a function of automatically weakening the intensity of the massage. 
       FIG. 8  is a conceptual diagram showing an example of a pressure sensing unit S 4  of the pressure-sensing type massage chair system  100  of  FIG. 1 , and  FIG. 9  is a conceptual signal diagram illustrating an example of command input of the pressure sensing unit S 4  of the pressure-sensing type massage chair system  100  of  FIG. 8 ,  FIG. 10  is a conceptual signal diagram illustrating another example of command input of the pressure sensing unit S 4  of the pressure-sensing type massage chair system  100  of  FIG. 8 , and  FIG. 11  is a conceptual signal diagram illustrating still another example of command input of the pressure sensing unit S 4  of the pressure-sensing type massage chair system  100  of  FIG. 8 . 
     More specifically, for example, as shown in  FIGS. 1 to 8 , the pressure sensing unit S 4  of the pressure-sensing type massage chair system  100  of  FIG. 1  includes any one or more of at least a first finger sensing unit S 41  corresponding to a first finger of the user, a second finger sensing unit S 42  corresponding to a second finger of the user, a third finger sensing unit S 43  corresponding to a third finger of the user, a fourth finger sensing unit S 44 , a fifth finger sensing unit S 45 , and combinations thereof. 
     Accordingly, as shown in  FIG. 9 , when a second finger signal or a third finger signal is sequentially input following a first finger signal, the first command signal output unit  61  may output, for example, a forward command signal (“−&gt;”) directed from the left to the right. 
     On the contrary, as shown in  FIG. 10 , when the second finger signal or the first finger signal is sequentially input following the third finger signal, the first command signal output unit  61  may output, for example, a backward command signal (“&lt;−”) directed from the right to the left. Here, it should be noted that such a directional signal may be generated from two finger signals or four or more finger signals. 
     In addition, as shown in  FIG. 11 , when some of at least a first finger signal, a second finger signal, and a third finger signal of the user&#39;s left hand and combinations thereof are simultaneously input, the first command signal output unit  61  may output a first intensity command signal, and when some of at least a first finger signal, a second finger signal, and a third finger signal of the user&#39;s right hand and combinations thereof are simultaneously input, the first command signal output unit  61  may output a second intensity command signal. In the drawings, it is illustrated that pressing twice with three fingers is determined as a command signal for increasing the intensity, but the present invention is not limited thereto, and all combinations of various forms and types of signals may be applicable. 
     According to various embodiments of the present invention made as described above, a command may be very simply input in response to an intuitive action of the user, such as pressing a particular area of the body where a massage is required using the pressure sensing unit, and this action may be associated with a voice recognition function so that even a very complex command can be very simply, briefly, and quickly input, which makes it possible to significantly increase the command recognition rate and to quickly detect the user&#39;s reaction or pain, thereby allowing the user to control an appropriate massage function very conveniently even during the massage. However, the scope of the present invention is not limited by the effect. 
     A number of examples have been described above. Nevertheless, it will be understood that various modifications may be made. For example, suitable results may be achieved if the described techniques are performed in a different order and/or if components in a described system, architecture, device, or circuit are combined in a different manner and/or replaced or supplemented by other components or their equivalents. Accordingly, other implementations are within the scope of the following claims. 
     REFERENCE NUMERALS 
       10 : SEAT PORTION 
       20 : FOOTREST PORTION 
       30 : BACKREST PORTION 
       40 : ARMREST PORTION 
       50 : HEADREST PORTION 
     S 1 , S 2 , S 3 , S 4 , S 5 : PRESSURE SENSING UNIT 
     M: MICROPHONE UNIT 
       60 : CONTROL UNIT 
       61 : FIRST COMMAND SIGNAL OUTPUT UNIT 
       62 : SECOND COMMAND SIGNAL OUTPUT UNIT 
       63 : COMMAND SENTENCE INFORMATION GENERATING UNIT 
       64 : COMMAND START TIME DETECTING UNIT 
     S 41 : FIRST FINGER SENSING UNIT 
     S 42 : SECOND FINGER SENSING UNIT 
     S 43 : THIRD FINGER SENSING UNIT 
       65 : COMMAND END TIME DETECTING UNIT 
       66 : PAIN SENSING UNIT 
       100 : PRESSURE-SENSING TYPE MASSAGE CHAIR SYSTEM