JP2008197801A - Mounting type information input device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the mounting position of a sensor from being restricted by detecting the change pattern of the charge quantity or potential of a human body. <P>SOLUTION: A mounting type input device 120 includes a sensor 121; a preamplifier 201; a filter 202; a pulse detector 203; a rhythm detector 204; a rhythm memory 207; and an output module 205. Electromagnetic relevant information read by the sensor 121 is detected as a signal by a pulse detector 203 through the preamplifier 201 and the filter 202, and its matching with a rhythm pattern stored in the rhythm memory 207 is performed by the rhythm detector 204 to judge what type of operations has been performed. The content of the operation judged in this way is transmitted from the output module 205 through an antenna 206 to this system by radio. In this case, the matching of the signal with the rhythm pattern is performed, and any change pattern is included without being restricted by such a word as rhythm. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wearable information input device, and more particularly to a wearable information input device that enables information input to a computer by being worn on a human body and detecting a user's operating state.

  2. Description of the Related Art Conventionally, there has been proposed an apparatus that provides an alternative input means by replacing an input to an electronic device such as a personal computer with a keyboard or a mouse (see, for example, Patent Document 1 or 2).

JP-A-10-198479 JP 2003-58857 A

However, when operating a conventional wearable device, there are the following problems.
(1) In the method of directly touching a switch or the like installed on a wearable device, it is difficult to mount the device in a place where it is difficult to reach.
(2) With a method of inputting sound such as voice to a microphone installed in a wearable device, it becomes difficult to separate it from ambient noise when the wearing place is away from the mouth, such as an ankle or back, and public spaces, etc. Depending on the place of use, it may be a nuisance to the surroundings.
(3) In a method of moving a body and driving a vibration acceleration sensor installed in a wearable device (such as a pedometer (registered trademark)), a large operation is required depending on the wearing place (trunk, etc.) .
(4) In the single-sensor type always-on input device of Patent Document 1 in which the impact is transmitted to the vibration acceleration sensor installed in the wearable device using bone conduction by hitting a fingertip or the like, the transmission distance is about 30 cm. Therefore, the sensor must be mounted in a close position, and the mounting location is limited.

  The present invention solves such a problem, and uses a human body that is a conductor to detect a change pattern of a charge amount or a potential of a human body, regardless of where the sensor is attached. An object of the present invention is to provide a wearable information input device that does not restrict the mounting position of a sensor.

  In order to achieve such an object, the invention described in claim 1 is a wearable information input device, and stores electromagnetic information generated in advance with the movement of a human body in association with a mode of movement. The storage means, the electromagnetic information detection means mounted on the human body to detect electromagnetic information, the electromagnetic information detected by the electromagnetic information detection means, and the electromagnetic information read from the electromagnetic information storage means are compared, and the electromagnetic information It is characterized by comprising an operation mode specifying means for specifying in which operation mode the information is generated.

  According to a second aspect of the present invention, in the wearable information input device according to the first aspect, the electromagnetic information detecting means includes a potential measuring means for measuring the potential of the human body as an electromagnetic related quantity, and the electromagnetic information is stored in the human body. It is a potential change pattern.

  According to a third aspect of the present invention, in the wearable information input device according to the first aspect, the electromagnetic information detecting means includes a charge amount measuring means for measuring the charge amount of the human body as an electromagnetic related amount, and the electromagnetic information is: It is a charge amount change pattern.

  According to a fourth aspect of the present invention, in the wearable information input device according to the first aspect, the electromagnetic information detecting means includes electromagnetic noise measuring means for measuring electromagnetic noise induced in the human body as an electromagnetic related quantity, The information is a change pattern of electromagnetic noise induced in the human body.

  According to a fifth aspect of the present invention, in the wearable information input device according to the first aspect, the electromagnetic information detecting means includes a capacitance measuring means for measuring the capacitance of the human body as an electromagnetic related quantity, and the electromagnetic information Is a change pattern of capacitance.

  According to a sixth aspect of the present invention, in the wearable information input device according to any of the second to fifth aspects, the electromagnetic information detecting means detects a sudden increase or decrease in the measured electromagnetic related amount as the electromagnetic information. It is characterized by that.

  According to a seventh aspect of the present invention, in the wearable information input device according to any one of the first to sixth aspects, the change pattern has a predetermined rhythm.

  According to an eighth aspect of the present invention, in the wearable information input device according to any one of the first to seventh aspects, a positive electricity generating means including a material that generates a positive electrostatic amount to be worn on a human body to be detected. In addition, the electromagnetic information detecting means is mounted on a human body to be detected.

  According to a ninth aspect of the present invention, in the wearable information input device according to any of the first to seventh aspects, negative electricity generating means including a material that generates a negative electrostatic quantity to be worn on a human body to be detected. In addition, the electromagnetic information detecting means is mounted on a human body to be detected.

  A tenth aspect of the present invention is the wearable information input device according to any one of the first to seventh aspects, further comprising: a piezoelectric generating means including a piezoelectric material that generates electricity by pressure applied to a human body to be detected. The electromagnetic information detecting means is mounted on a human body to be detected.

  According to the present invention, electromagnetic information storage means for storing electromagnetic information generated in accordance with the movement of the human body in association with the mode of operation, electromagnetic information detection means for detecting electromagnetic information attached to the human body, and electromagnetic An operation mode specifying unit that compares the electromagnetic information detected by the information detection unit with the electromagnetic information read from the electromagnetic information storage unit and specifies in which operation mode the electromagnetic information is generated. Because it is equipped with a sensor, the human body, which is a conductor, can be used to detect changes in the charge amount or potential of the human body, regardless of where the sensor is mounted. A wearable information input device that does not restrict the position can be provided.

  In addition, the device can be controlled by generating a desired change pattern by a simple movement of a toe or a fingertip, and the device can be controlled using a simple rhythm.

  Furthermore, an inexpensive sensor mechanism already used for industrial use can be used, and a change pattern can be generated more easily.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram for explaining the outline of a wearable input device as a first embodiment of the present invention. FIG. 1A shows a state where the wearable input device 120 is worn on a human body 110 and a foot 130 is moved. Is shown. In FIG. 1B, the wearable input device 120 is worn on the human body 110 via clothes (a shirt 111 and an underwear 112), and a sensor 121 is attached inside the wearable input device 120 via an insulating plate 122. (C) shows a state in which the foot 130 of the human body 110 moves the toes 134 while wearing the shoes 133 via the socks 132. Referring to FIG. 1B, the sensor 121 is in contact with the human body 110, but it can be understood that the metal portion does not touch the human body through the insulating plate 122 therebetween. With such an insulating portion 122, it is possible to avoid the sensor 121 from coming into direct contact even without clothing (the shirt 111 and the underwear 112).

  When the user's human body 110 moves, the clothes rub against each other and static electricity is generated. The static electricity is generated between the person's foot 130 and the floor even when the person's foot 130 is separated from the floor, and the accumulated charge is charged and discharged. In addition to during normal walking, static electricity is also generated by minute movements such as separating the toes from the floor while keeping the heel of the foot 130 in contact with the floor. It can also be generated by the action of grasping the toes 134 in the shoe. In particular, it is possible to cause a pulse-like change by suddenly bringing the toes into contact with the floor or by rapidly moving the toes 134. Static electricity generated by these operations appears as a change in the potential of the human body or the amount of charge, and the sensor 121 measures the amount of change.

  FIG. 2 is a block diagram showing an internal configuration of the wearable input device 120 of the present embodiment. The wearable input device 120 includes a sensor 121, a preamplifier 201, a filter 202, a pulse detector 203, a rhythm detector 204, a rhythm memory 207, and an output module 205. As can be understood with reference to FIG. 2, the electromagnetic-related information read by the sensor 121 is detected as a signal by the pulse detector 203 via the preamplifier 201 and the filter 202, and the rhythm stored in the rhythm memory 207 by the rhythm detector 204. The operation is determined by matching with the pattern. The contents of the operation thus determined can be transmitted from the output module 205 to the system wirelessly via the antenna 206. Here, the signal is matched with the rhythm pattern, but is not limited to the word rhythm and includes any change pattern. Further, communication to the host system is not limited to wireless communication, and various methods known in this technical field can be used.

  FIG. 3 is a diagram showing a configuration of an input system using the wearable input device of the present embodiment. This input system shows an example in which a personal computer 301, a wireless base station 302, and a database 303 are connected by a LAN as an example, but the present invention is not limited to this, and various types of systems can be used. Normally, data input in such a system is performed using a keyboard or a mouse of the personal computer 301. In this embodiment, an operation mode in which data is input from the wearable input device 120 via the radio base station 302 using radio. Based on the input data can be determined. The database 303 may store rules for the operation mode and interpretation thereof. Further, as will be described later, the wearable input device 120 can be provided with such a function, and can also be functioned in a shared manner.

  FIG. 4 is a diagram illustrating a module configuration of the rhythm detection unit 204 of the present embodiment. As shown in FIG. 4, the rhythm detection unit 204 includes a data reception unit 401 that receives electromagnetic-related information, an access unit 402 that reads a rhythm pattern from the rhythm memory 205, and a potential change pattern determination unit 403 that determines a change pattern by matching. And a data input conversion unit 404 that outputs an operation mode corresponding to the change pattern by any method.

  FIG. 5 is a diagram showing an example of a charge amplifier type sensor as an example of the sensor of the present embodiment, and detects the charge amount of the human body, which is electromagnetic related information. The electrode 501 is in contact with the human body 110 via the insulating plate 122 and forms a capacitor with the human body. The charge amount of the capacitor is amplified by the OP amplifier 502 and sent to the subsequent circuit. In addition, since the ground of the detection circuit is not connected to the human body, the return side of the capacitor is only the stray capacitance with the human body 110. However, if the mounting state of the circuit on the human body is stable, the accumulation of the human body 110 is performed. It is possible to detect a change in the amount of charge. The charge amplifier circuit itself is widely used for industrial use and can be realized at low cost.

  Similarly, FIG. 6 is a diagram illustrating an example of a charge amount measurement type sensor as an example of the sensor of the present embodiment. The electrode 501 is in contact with the human body 110 via the insulating plate 122. The potential of the electrode 501 is buffered by a high input impedance FET (field effect transistor) 603 and sent to a subsequent circuit. The electrode 501 is provided with an electret film 601 having a constant polarization potential. Therefore, since the potential of the electrode 501 changes according to the potential of the adjacent human body 110 with reference to the polarization potential of the electret film 601, the potential of the human body can be detected. Since the ground of the detection circuit is not connected to the human body, the “absolute amount” of the potential cannot be detected, but the “change amount” up to a very low frequency can be detected. This type of charge amount measuring sensor is used in, for example, Patent Document 2 (walking detection method). In addition to this, a potential measurement sensor used in a “non-contact type voltage detector” or the like can be used in the same manner.

  The potential or accumulated charge amount of the human body 110 detected by these sensors 121 is amplified by the preamplifier 201, noise such as power supply hum is removed by the filter 202, and the pulse component is detected by the pulse detector 203. . By extracting only the pulse-like component, it becomes easy to extract only an intentional input operation performed by a human. A “pulse train having a specific rhythm” is further extracted from the pulse-like change thus extracted.

  The specific rhythm pattern is stored in the rhythm memory 207 in advance, and is compared as a template. Rhythm input is used, for example, in Patent Document 1 (single sensor type always-on input device). In the present embodiment, signal waveforms generated by tapping and the like are shown in FIGS. 15 and 16 as an example of signal waveforms used as such a change pattern. The manner of movement of the human body can be determined with certain certainty by the method shown in FIGS.

  When a specific rhythm pattern is detected, a predetermined command is sent to the output module 205 and transmitted to the external device through the antenna 206. The command may be transmitted to an external device, or another device in the wearable input device 120 may be controlled. As a result, in addition to the system shown in FIG. 3, the device worn on the body can be operated without depending on the wearing site by the operation of tapping the floor rhythmically with the tip of the foot (tapping operation). It can also be input. Note that the same input is possible even if a change in static electricity is generated by other methods.

  FIG. 7 shows an example for efficiently changing the charge amount. As shown in FIG. 7A, a part of the clothes 701 may be quickly moved or may be picked and released. In this case, the clothes 701 may be made of a material that easily generates static electricity, such as wool or acrylic. Further, as shown in FIG. 7B, the clothes 701 and the gloves 702 may be quickly rubbed together. In this case, the material of the clothes 701 and the gloves 702 may be a combination that easily generates positive and negative static electricity (for example, clothes are wool or nylon, and gloves are acrylic or polyester).

  FIG. 7C shows an example in which clothes and gloves have a double structure. By forming a double structure with the above-mentioned “combination that easily generates static electricity”, static electricity can be generated by a simple operation such as grasping a hand. FIG. 7D shows an example in which a piezoelectric material 704 such as PZT or PVDF is installed on a part of the body. By applying an abrupt pressure or strain to the piezoelectric material 704, electric charges are generated, and the amount of change can be detected by the aforementioned sensor.

(Second Embodiment)
Next, another embodiment of the present invention will be described. FIG. 8 shows a wearable input device 120 as a second embodiment of the present invention, and FIG. 9 is a block diagram thereof. The wearable input device 120 includes a sensor 121, a preamplifier 201, a filter 202, a pulse detector 203, a rhythm detector 204, a rhythm memory 207, and an output module 205.

  Although the sensor 121 is in contact with the human body 110, the metal part does not touch the human body through the insulating plate 122 therebetween. A thin cloth such as an underwear 112 or a shirt 111 may be interposed between the human body and the human body.

  FIG. 10 is an example of the structure of the sensor 121. The electrode 501 is connected to a high input impedance buffer. The electrode 501 is AC-coupled to the human body, and detects external noise induced in the human body. When the human body 110 touches a surrounding object such as the desk 802 with the fingertip 801 or the like, the external noise induced by the human body changes. After the external noise is amplified by the preamplifier 201, a noise component having a particularly desired frequency is extracted by the filter 202, then extracted as an increase / decrease value of the target component by the detector 901, and the pulse detector 203 detects the pulse component. To do.

  By extracting only the pulse-like component, it becomes easy to extract only an intentional input operation performed by a human. A “pulse train having a specific rhythm” is further extracted from the pulse-like change thus extracted. The specific rhythm pattern is stored in the rhythm memory 207 in advance, and is compared as a template. Rhythm input is used, for example, in Patent Document 1 (single sensor type always-on input device).

  When a specific rhythm pattern is detected, a predetermined command is sent to the output module 205 and transmitted to the external device through the antenna 206. The command may be transmitted to an external device, or another device in the wearable input device 120 may be controlled. Thus, the device attached to the body can be operated without depending on the attachment site by the operation (tap operation) of hitting a peripheral object (desk, column or wall) rhythmically with a fingertip or the like.

  As an external noise component, the 50 Hz or 60 Hz component of commercial AC power can be used in buildings and streets. In addition to this, it is also possible to use noise of several tens to several hundreds KHz generated by inverter equipment, and medium-wave and short-wave broadcast waves. As an object to be touched with a fingertip, an object that is as large as possible or an object having high conductivity is more convenient because the amount of change in induced noise increases.

  Further, when the object is connected to the earth ground, a larger amount of change can be obtained. Unlike the first embodiment, the amount of change is larger when the fingertips are exposed. In this embodiment, a simple voltage amplifier is used as a sensor, but the same effect can be obtained by using other sensors as long as the input mechanism has a high impedance.

  For example, the charge amplifier and the charge amount sensor shown in the first embodiment can be used. As a result, a single sensor can be used for both, improving the economic efficiency.

  The sensor shown in this embodiment may be used as a (passive) touch switch. A conventional touch switch detects “whether a human touches a device”, whereas the present invention detects “whether a human wearing the device touches another object”. Is.

  Although both have different purposes, the sensor part can be shared. Note that an object that generates a pattern other than the user's action, for example, an object with a transmitter that generates a specific frequency component, is installed in the surrounding environment in advance, and the object can be operated more reliably by touching the object. You can also If the filter 202 is set so that it reacts only to the frequency of the transmitter, malfunctions due to other noises can be avoided, and if a plurality of transmitters having different transmission frequencies are installed, it varies depending on the place of touch. It is also possible to execute commands.

(Third embodiment)
Next, still another embodiment of the present invention will be described. A wearable input device as a third embodiment of the present invention is shown in FIGS. 8 and 12 as in the second embodiment, and FIG. 11 is a block diagram thereof. The wearable input device 120 includes a sensor 121, an oscillator 1101, a preamplifier 201, a filter 202, a pulse detector 203, a rhythm detector 204, a rhythm memory 207, and an output module 205.

  Although the sensor 121 is in contact with the human body 110, the metal part does not touch the human body through the insulating plate 122 therebetween. A thin cloth such as the underwear 112 or the shirt 111 may be interposed between the human body and the human body.

  The oscillator 1101 oscillates at a frequency between several tens of kilohertz and several hundreds of kilohertz, and the oscillation waveform is applied to the human body 110 through the electrode plate 501. When the human body 110 touches a surrounding object such as the desk 802 with the fingertip 801 or the like, the capacitance of the capacitor formed by the station number 501 and the human body 110 increases, and thus the amplitude of the waveform observed by the amplifier 1202 decreases.

  These change amounts are detected, and, as in the first and second embodiments, only a pulse-like change amount is extracted, a command is determined from the rhythm pattern, and executed. The sensor shown in this embodiment may be used as an (active type) touch switch.

  A conventional touch switch detects “whether a human touches a device”, whereas the present invention detects “whether a human wearing the device touches another object”. Is. Although both have different purposes, the sensor part can be shared.

  The first embodiment (charge amount change) and the second and third embodiments (external noise change, capacitance change) can be used simultaneously.

  Therefore, the tap at the tip of the foot and the tap at the fingertip can be separated and used as different commands.

(Fourth embodiment)
Next, still another embodiment of the present invention will be described. FIG. 13 is a wearable activity amount grasping device as a fourth embodiment of the present invention, and FIG. 14 is a block diagram thereof. The wearable input device 120 includes a sensor 121, a preamplifier 201, a filter (1) 1401, a filter (2) 1402, a pulse detector (1) 1403, a pulse detector (2) 1404, a processing unit 1405, a memory 1407, and an output module. 205.

  The structures and operations of the sensor 121, the preamplifier 201, the filter (1) 1401, and the pulse detector (1) 1403 are the same as those in the first embodiment. On the other hand, the structures and operations of the sensor 121, the preamplifier 201, the filter (2) 1402, and the pulse detector (2) 1404 are the same as those in the second embodiment. The sensor 121 and the preamplifier 201 are shared. A change in static electricity (hereinafter “output A”) associated with walking or movement of the entire body is detected by a filter (1) 1401 and a pulse detector (1) 1403. On the other hand, a change in induced noise (hereinafter referred to as “output B”) when a surrounding object (desk 802 or personal computer 1301) is touched by a hand is detected by a filter (2) 1402 and a pulse detector (2) 1404.

  Both use the same sensor 121. For example, the filter (1) 1401 extracts a change amount of 30 Hz or less lower than the power supply hum noise, and conversely, the filter (2) 1402 uses the power supply hum noise and the surrounding dominant spatial noise. By detecting “only” and then detecting it as a change amount by the detector 901, it is possible to separate them.

  Each extracted output A / B is sent to the processing unit 1405. In addition, the information amount can be compressed by converting the pulse frequency information through the pulse detector 203 instead of the analog amount.

  The processing unit 1405 has a timer 1406 and a memory 1407, records outputs A and B for each time, and transmits them to an external device through the output module 205 and the antenna 206. In addition to this, the output of other sensors such as GPS may be stored and reported simultaneously.

  In addition, “signal pattern during wearer's normal activity” or “typical abnormal pattern” is recorded in the memory 1407, and an emergency call is made by comparing this with the input waveform. You can also.

  As described above, the activity amount grasping device using the conventional acceleration sensor has problems such as insufficient measurement depending on the mounting position of the device and difficulty in reacting to small movements of the toes and hands. In this embodiment, the same output can be obtained regardless of where the body is mounted, and minute movement such as “move the mouse”, which has been difficult in the past, can be detected.

It is a figure for demonstrating the outline | summary of the mounting | wearing type input device as 1st Embodiment of this invention. It is a block diagram which shows the internal structure of the mounting | wearing type | mold input device of this embodiment. It is a figure showing the composition of the input system using the wearing type input device of this embodiment. It is a figure which shows the module structure of the rhythm detection part of this embodiment. It is a figure showing an example of a charge amplifier type sensor as an example of a sensor of this embodiment. It is a figure which shows an example of the charge amount measurement type sensor as an example of the sensor of this embodiment. It is a figure which shows the example for changing the charging amount of a present Example efficiently. It is a wearable input device as a 2nd embodiment of the present invention. It is a block diagram which shows the internal structure of the mounting | wearing type | mold input device of this embodiment. It is a figure which shows an example of the sensor of this embodiment. It is a block diagram which shows the internal structure of the mounting | wearing type | mold input device of this embodiment. It is a figure for demonstrating the outline | summary of the mounting | wearing type input device as one Embodiment of this invention. It is a wearing type activity amount grasping device as a 4th embodiment of the present invention. It is a block diagram which shows the internal structure of the mounting | wearing type | mold input device of this embodiment. It is a figure which shows an example of the change pattern of this embodiment. It is a figure which shows an example of the change pattern of this embodiment.

Explanation of symbols

110 Human body 111 Shirt 112 Underwear 120 Wearable input device 121 Sensor 122 Insulating plate 130 Foot 132 Socks 133 Shoes 134 Toe 201 Preamplifier 202 Filter 203 Pulse detector 204 Rhythm detector 205 Output module 206 Antenna 207 Rhythm memory 301 Personal computer 302 Wireless Base station 303 Database 501 Electrode 502 OP amplifier 601 Electret film 603 FET (field effect transistor)
701 Clothes 702 Gloves 704 Piezoelectric material 801 Fingertip 802 Desk 901 Detector

Claims (10)

In advance, electromagnetic information storage means for storing electromagnetic information generated in accordance with the movement of the human body in association with the mode of the movement,
Electromagnetic information detecting means mounted on the human body to detect the electromagnetic information;
An operation mode in which the electromagnetic information detected by the electromagnetic information detection unit is compared with the electromagnetic information read from the electromagnetic information storage unit, and the operation mode in which the electromagnetic information is generated is identified. A wearable information input device comprising: a specifying means. The electromagnetic information detecting means includes a potential measuring means for measuring the potential of the human body as an electromagnetic related quantity,
The wearable information input device according to claim 1, wherein the electromagnetic information is a change pattern of a potential of a human body. The electromagnetic information detecting means includes a charge amount measuring means for measuring a charge amount of a human body as an electromagnetic related amount,
The wearable information input device according to claim 1, wherein the electromagnetic information is a charge amount change pattern. The electromagnetic information detecting means includes electromagnetic noise measuring means for measuring electromagnetic noise induced in a human body as an electromagnetic related quantity,
The wearable information input device according to claim 1, wherein the electromagnetic information is a change pattern of electromagnetic noise induced in a human body. The electromagnetic information detecting means includes a capacitance measuring means for measuring the capacitance of the human body as an electromagnetic related quantity,
The wearable information input device according to claim 1, wherein the electromagnetic information is a capacitance change pattern.   6. The wearable information input device according to claim 2, wherein the electromagnetic information detecting means detects a sudden increase or decrease in the measured electromagnetic related amount as the electromagnetic information.   The wearable information input device according to claim 1, wherein the change pattern has a predetermined rhythm.   The electromagnetism information detecting means is further attached to the human body of the detection object, further comprising positive electricity generating means including a material that generates a positive electrostatic quantity to be attached to the human body of the detection object. The wearable information input device according to any one of 1 to 7.   2. The apparatus according to claim 1, further comprising negative electricity generating means including a material that generates a negative electrostatic quantity to be attached to a human body to be detected, wherein the electromagnetic information detecting means is attached to the human body to be detected. The wearable information input device according to any one of 1 to 7.   2. The piezoelectric generating unit including a piezoelectric material that generates electricity by pressure applied to a human body to be detected, wherein the electromagnetic information detecting unit is mounted on the human body to be detected. The wearable information input device according to any one of Items 7 to 7.

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