JP2009218759A - Operation signal transmitter, remote control system, and method of determining part operated by user - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method can discriminate by which part a gesture operation of an operator operating an operation signal transmitter is being performed from the measurement information of at least two acceleration sensors disposed at different parts of the operation signal transmitter, and the operation signal transmitter. <P>SOLUTION: In the operation signal transmitter 20, a first acceleration 120 and a second acceleration 121 without the influence of gravitational acceleration are measured in a first acceleration sensor 10 and a second acceleration sensor 11, and two normals are calculated on the basis of the two measured accelerations. Then, by calculating an intersection formed by the two calculated normals, an operation center is calculated from the gesture operation performed by the user of the operation signal transmitter 20. Thus, by which part the gesture operation of the operator operating the operation signal transmitter is being performed is discriminated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a controller that detects the operation of a remote control device main body that transmits a remote operation signal to a remotely operated device and changes the function of the remotely operated device.

Conventionally, as an operation signal transmission device for remotely operating an electric appliance such as a television or a digital recorder, a remote operation is performed by pressing operation buttons assigned to various functions provided on the surface of the operation signal transmission device main body. In general, devices that operate operation devices are widely used. Further, by attaching a sensor capable of measuring the acceleration or angular velocity of the operation signal transmission device main body to the operation signal transmission device, the gesture operation performed by the user on the operation signal transmission device is detected, and the operation of the remotely operated device is performed. It is considered to do. For example, at least two or more acceleration sensors are arranged at different locations on the remote control device main body, and the angular displacement is calculated from the angular acceleration measured at each of the arranged locations, thereby detecting the rotational movement of the operation signal transmitting device main body. (For example, refer to Patent Document 1). In addition, there is one that detects the vertical and horizontal movements of the operation signal transmission device from the measurement information of the acceleration sensor arranged in the operation signal transmission device main body (see, for example, Patent Document 2).
JP-A-2-189536 Japanese Patent Laid-Open No. 11-285083

  However, in the conventional configuration, since the gesture operation of only the remote control device is detected based on the value of the acceleration sensor arranged in the operation signal transmission device main body, for example, the user shakes with the remote control device, etc. When performing the above operation, it is detected by which part the gesture operation performed by the user himself / herself is performed from the information of the acceleration sensor measurement, such as whether the operation is performed with the wrist of the user or the arm as the center. I had the problem that I couldn't do it.

  In order to achieve the above object, an operation signal transmitting device comprising at least two or more acceleration sensors, the first acceleration sensor for measuring acceleration at a predetermined position of the operation signal transmitting device main body, and the position When the second acceleration sensor that measures acceleration at a position different from the above and the operation signal transmission device main body are in a substantially stationary state, the measurement is performed by at least one of the first acceleration sensor and the second acceleration sensor. Acceleration is accumulated as gravitational acceleration, the difference between the acceleration measured by the first acceleration sensor and the gravitational acceleration is calculated, and the acceleration measured by the second acceleration sensor and the gravitational acceleration Based on the subtraction means for calculating the difference and the output result of the subtraction means, the operation part of the user of the operation signal transmission device is determined. An operation part identification means, and further comprising a.

  According to this configuration, the first acceleration sensor and the second acceleration sensor measure the acceleration excluding the influence of the gravitational acceleration, and perform the gesture operation from the gesture operation performed by the user of the operation signal transmission device. The center can be calculated.

  Thereby, it is determined by which part the gesture operation of the operator who operates the operation signal transmission device is performed from the measurement information of at least two or more acceleration sensors arranged at different locations of the operation signal transmission device. it can.

  In an embodiment of the present invention, an operation signal transmitting device comprising at least two or more acceleration sensors, the first acceleration sensor for measuring acceleration at a predetermined position of the operation signal transmitting device main body, When the second acceleration sensor that measures acceleration at a position different from the position and the operation signal transmission device main body are in a substantially stationary state, the measurement is performed by at least one of the first acceleration sensor and the second acceleration sensor. Acceleration calculated as a gravitational acceleration, a difference between the acceleration measured by the first acceleration sensor and the gravitational acceleration is calculated, the acceleration measured by the second acceleration sensor, and the gravitational acceleration, Based on the output result of the subtracting means for calculating the difference between the subtracting means and the operation result of the user of the operation signal transmitting device, Is characterized by comprising an operation part identification unit that, the.

  In this operation signal transmitting apparatus, the first acceleration sensor and the second acceleration sensor measure acceleration excluding the influence of gravitational acceleration, and the operation center is determined from the gesture operation performed by the user of the operation signal transmitting apparatus. Therefore, it is possible to determine by which part the gesture operation of the operator who operates the operation signal transmission device is performed.

  Further, the operation part specifying unit calculates an operation center that is a substantially center position of a circular motion performed on the operation signal transmission device main body based on the two accelerations output from the subtraction unit, The operation part of the user of the operation signal transmitting device is determined according to the distance from the first acceleration sensor or the second acceleration sensor.

  According to this operation site specifying means, it is possible to calculate the motion center more specifically by regarding the gesture motion performed by the user on the operation signal transmission device as a substantially circular motion.

  In addition, when the distance between the operation center and the first acceleration sensor or the second acceleration sensor is smaller than a predetermined first value, the operation part specifying unit focuses on the wrist of the user. It is characterized by determining that an operation has been performed.

  According to this operation part specifying means, by using the information of the acceleration sensor provided in the operation signal transmission device and the information on the operation center, the gesture operation performed by the user with respect to the operation signal transmission device can be further detailed. Can be determined.

  In addition, when the distance is greater than the second value, the operation part specifying unit determines that the operation is performed by the entire body of the user, and the second value is greater than the first value. It is also characterized by being large.

  According to this operation part specifying means, by using the information of the acceleration sensor provided in the operation signal transmission device and the information on the operation center, the gesture operation performed by the user with respect to the operation signal transmission device is further detailed. Can be determined.

  In addition, the operation part specifying unit determines that the operation is performed around the user's elbow when the distance is larger than the first value and smaller than the second value. It is characterized by.

  According to this operation part specifying means, by using the information of the acceleration sensor provided in the operation signal transmission device and the information on the operation center, the gesture operation performed by the user on the operation signal transmission device can be performed on the wrist or It is possible to determine that the gesture is performed not only on the elbow but also on the entire body.

  In addition, the first acceleration sensor and the second acceleration sensor measure the acceleration of a scalar value expressed by one axis, and the operation site specifying unit has the same two accelerations output from the subtracting unit. It is characterized in that it is determined whether or not encoding is performed, and an operation part of a user of the operation signal transmission device is determined according to the determination result.

  In this operation signal transmission device, the first acceleration sensor and the second acceleration sensor respectively acquire the acceleration of the scalar value, calculate the difference of the gravitational acceleration from the acquired acceleration, and calculate the product of the two calculated accelerations. It is possible to determine not the gesture operation of the operation signal transmission device itself but the gesture operation of the operator who operates the operation signal transmission device. Therefore, even if a uniaxial sensor that is relatively cheaper than three or two axes is used, it is possible to determine the gesture operation of the operator who operates the operation signal transmission device.

  Further, the operation part specifying means determines that the operation is performed around the wrist of the user when it is determined that the sign is different in the determination.

  In this operation part specifying means, by using information of an acceleration sensor capable of measuring only one-axis acceleration provided in the operation signal transmission device, a gesture operation performed by the user with respect to the operation signal transmission device can be further performed. It becomes possible to determine in detail.

  Further, the operation part specifying means determines that the operation is performed around the elbow of the user when it is determined that the same sign is used in the determination.

  In this operation part specifying means, by using information of an acceleration sensor that can measure only one-axis acceleration provided in the operation signal transmission device, a gesture operation performed by the user with respect to the operation signal transmission device can be performed. In addition, it is possible to determine that the gesture action is performed with the elbow.

  Further, the gravitational acceleration buffer means is configured to operate the operation when the magnitude of the difference between the acceleration measured by the first acceleration sensor and the acceleration measured by the second acceleration sensor is smaller than a predetermined magnitude. It is characterized in that it is determined that the signal transmission device main body is in a substantially stationary state.

  In this gravitational acceleration buffer means, the difference between the accelerations measured by the two acceleration sensors provided in the operation signal transmission device is calculated. If the difference is smaller than a predetermined size, the operation signal transmission device is substantially stationary. It is possible to store the acceleration measured by the acceleration sensor as the gravitational acceleration.

  Further, the gravitational acceleration buffer means is configured such that the change amount of the acceleration measured by the acceleration sensor arranged in the operation signal transmission device within a predetermined time is smaller than a predetermined value when the operation signal transmission device main body Is determined to be in a substantially stationary state.

  In this gravitational acceleration buffer means, the amount of change in acceleration at a predetermined time measured by the two acceleration sensors provided in the operation signal transmission device is calculated, and if it is smaller than the predetermined size, the operation signal transmission is performed. The apparatus can determine that the apparatus is in a substantially stationary state and accumulate acceleration measured by the acceleration sensor as gravitational acceleration.

  Further, in a remote control system including an operation signal transmission device including at least two acceleration sensors and an operation signal reception device that receives an operation signal of the operation signal transmission device, the operation signal transmission device main body is predetermined. When the first acceleration sensor means for measuring acceleration at a different position, the second acceleration sensor means for measuring acceleration at a position other than the position, and the operation signal transmission device main body are substantially stationary, the first acceleration sensor means The acceleration measured by at least one of the acceleration sensor and the second acceleration sensor is defined as gravitational acceleration, and the difference between the acceleration measured by the first acceleration sensor and the gravitational acceleration is calculated, A subtraction means for calculating a difference between the acceleration measured by the two-acceleration sensor and the gravitational acceleration; Output based on the, is characterized by and an operation part identification means for determining the operation site of a user of the operating signal transmitter.

  In this remote control system, the first acceleration sensor and the second acceleration sensor measure the acceleration excluding the influence of gravitational acceleration, and calculate the motion center from the gesture motion performed by the user of the operation signal transmission device. Therefore, it is possible to determine by which part the gesture operation of the operator who operates the operation signal transmission device is performed.

  In the user operation part determination method, comprising: an operation signal transmission device including at least two acceleration sensors; and an operation signal reception device that receives an operation signal of the operation signal transmission device. A first acceleration sensing step for measuring acceleration at a predetermined position using a first acceleration sensor, and a second acceleration sensing for measuring acceleration at a position other than the position using a second acceleration sensor. And when the operation signal transmitting device main body is in a substantially stationary state, the acceleration measured by at least one of the first acceleration sensor and the second acceleration sensor is a gravitational acceleration, and the first acceleration sensor The difference between the acceleration measured in step 1 and the gravitational acceleration is calculated and measured by the second acceleration sensor. A subtraction step for calculating a difference between the acceleration to be performed and the gravitational acceleration, and an operation part specifying step for determining an operation part of a user of the operation signal transmission device based on an output result in the subtraction step. It is a user operation part judging method characterized by providing.

  In this user operation part determination method, the first acceleration sensor and the second acceleration sensor measure acceleration excluding the influence of gravitational acceleration, and from the gesture operation performed by the user of the operation signal transmission device. Since the center of motion can be calculated, it is possible to determine which part is performing the gesture motion of the operator who operates the operation signal transmission device.

  The best mode for carrying out the present invention will be described below with reference to the drawings. In the present invention, the operation center refers to the approximate center position of the circle in a substantially circular motion when the user performs a gesture operation such as shaking the remote control device. The operation signal transmission device is hereinafter referred to as a remote control device.

(Embodiment 1)
FIG. 1 shows a configuration of remote control device 20 according to Embodiment 1 of the present invention. The remote control device 20 of the present invention is configured such that the first acceleration sensor 10 and the second acceleration sensor 11 are disposed at substantially both ends of the remote control device 20, respectively.

  The first acceleration sensor 10 and the second acceleration sensor 11 measure an acceleration vector in an orthogonal coordinate system whose origin is the place where the first acceleration sensor 10 and the second acceleration sensor 11 are arranged. Then, the measured acceleration vector is decomposed into x, y, and z axis components of an orthogonal coordinate system and output. Here, in the first embodiment, for convenience of explanation, the x, y, and z axes of the orthogonal coordinate system in the first acceleration sensor 10 and the second acceleration sensor 11 are set to be parallel. In this case, it is expected that the calculation process can be simplified. Note that the acceleration sensor provided in the remote control device 20 may be a sensor in which an acceleration vector is represented by a polar coordinate system. In this case, it is expected that the gesture operation performed by the user of the remote control device 20 can be expressed more intuitively. Further, the coordinate system used in the acceleration vector is not limited to the above two coordinate systems, and any coordinate system may be used as long as it is a generally used coordinate system. Furthermore, the origin of the coordinate system is not limited to the place where the acceleration sensor is disposed, and a predetermined point of the remote control device 20 such as the substantially central portion of the remote control device 20 is defined as the coordinate origin. The coordinate system may be configured to use. In this case, there is no need to perform coordinate conversion in order to handle the acceleration represented by one coordinate system on another coordinate system when performing arithmetic processing, so that the amount of calculation processing can be reduced. Be expected.

  Hereinafter, components of remote control device 20 according to Embodiment 1 of the present invention will be described with reference to the drawings.

  FIG. 2 is a block diagram of remote control device 20 according to Embodiment 1 of the present invention.

  In FIG. 2, the remote control device 20 includes a first acceleration sensor 10, a second acceleration sensor 11, a gravity register 12, a first subtraction unit 13, a second subtraction unit 14, and a determination unit 15.

  The first acceleration sensor 10 and the second acceleration sensor 11 measure the acceleration generated in the remote control device 20 in accordance with the gesture operation performed by the operator, and the first subtraction unit 13, the second subtraction unit 14, and the gravity register 12 and output.

  The gravity register 12 is a register for accumulating the acceleration vector measured by the first acceleration sensor 10 or the second acceleration sensor 11 as a gravity acceleration vector when the remote control device 20 is substantially stationary. Note that the difference between the acceleration vectors measured by the second acceleration sensor 11 is calculated from the acceleration vectors measured by the first acceleration sensor 10, and the magnitude of the calculated vector is smaller than a predetermined value. In this case, the remote control device 20 may be in a substantially stationary state. Here, the predetermined value is determined in accordance with physical characteristics of the first acceleration sensor 10 and the second acceleration sensor 11, such as a value determined according to the sensing accuracy of the acceleration sensor provided in the remote control device 20. Any value may be used as long as it is a value to be set. Further, when the output changes of the first acceleration sensor 10 and the second acceleration sensor 11 are smaller than a predetermined change amount during a predetermined time, the remote control device 20 may be in a substantially stationary state. I do not care. Here, the predetermined time is a time determined according to a sampling time at which the acceleration sensor provided in the remote control device 20 performs sensing, a time determined according to a use situation in which the remote control device 20 is used, or the like. You may use. Note that the setting of the substantially stationary state is not limited to the above methods, and any method that can determine the stationary state of the remote control device 20 such as a method that combines the above two methods, for example, can be used. You may use.

  The first subtraction unit 13 calculates a difference between the acceleration vector measured by the first acceleration sensor 10 and the gravitational acceleration vector accumulated in the gravity register 12 (hereinafter referred to as a first acceleration vector by a gesture operation). And output to the determination unit 15.

  The second subtracting unit 14 calculates a difference between the acceleration vector measured by the second acceleration sensor 11 and the gravitational acceleration vector stored in the gravity register 12 (hereinafter referred to as a second acceleration vector by the gesture operation). And output to the determination unit 15.

  In the first embodiment of the present invention, the first subtracting unit 13 and the second subtracting unit 14 are described separately. However, the present invention is not limited to this configuration, and is configured by one subtracting unit. It doesn't matter.

  Based on the respective acceleration vectors notified from the first subtracting unit 13 and the second subtracting unit 14, the determination unit 15 performs a gesture operation on the remote control device 20 around which part of the user's body. It is determined whether.

  Hereinafter, the operation content of the determination unit 15 according to Embodiment 1 of the present invention will be described with reference to the drawings.

  FIG. 3 shows the first acceleration vector by the gesture operation, the second acceleration vector by the gesture operation, and the operation center in the operation of the remote control device 20 when the user performs the gesture operation of the remote control device 20. FIG.

  In FIG. 3, the first acceleration vector 120 based on the gesture motion, the second acceleration vector 121 based on the gesture motion, the motion center 124, the line segment 122 connecting the motion center 124 and the first acceleration sensor 10, the motion center 124 and the second motion vector. A line segment 123 connecting the acceleration sensor 11 is defined. The first acceleration sensor 10 and the second acceleration sensor 11 each have an orthogonal coordinate system, and the user holds the vicinity of the second acceleration sensor 11 and performs a gesture operation on the remote control device 20. Shall.

  The determination unit 15 first obtains the first acceleration vector 120 by the gesture operation output from the first subtraction unit 13 and the second acceleration vector 121 by the gesture operation output from the second subtraction unit 14. Then, a line segment 122 that is orthogonal to the first acceleration vector 120 by the gesture operation and that is the first normal line belonging to the plane where the two acceleration vectors exist, and an orthogonal to the second acceleration vector 121 by the gesture operation. In addition, a line segment 123 that is a second normal line belonging to a plane on which two acceleration vectors exist is calculated. Further, the intersection of the two calculated normals is calculated, and the calculated intersection is set as the operation center 124. When the distance between the motion center 124 and the second acceleration sensor 11 is smaller than the first value set in advance, the gesture motion performed by the user on the remote control device 20 is determined as an operation centered on the wrist. If it is greater than the first value, it is determined that the operation is centered on the elbow, and the determination result is output. Here, the first value is a value that is set according to the physical properties of the user, and for example, a value that is set according to the physical characteristics in gender and age may be used. . In this case, there is an effect that the operation content of the user can be detected more accurately. Furthermore, as a condition for determining the user's gesture motion, a second value larger than the first value is set, and the distance between the motion center 124 and the second acceleration sensor 11 is larger than the second value. If it is larger, it is determined that the remote control device 20 has been gesture-operated using the entire body of the user. If it is smaller than the second value, it is determined that the remote control device 20 has been gesture-operated using the user's elbow I do not care. In this case, there is an effect that the gesture operation performed by the user of the remote control device 20 can be expressed in more detail. Here, similarly to the first value, the second value may be a value set according to the physical characteristics of the user.

  Note that the first value may be changed, for example, by pressing a button provided on the main body of the remote control device 20 while the remote control device 20 is in use. In this case, even if the user changes suddenly while using the remote control device 20, there is an effect that the operation content can be accurately detected.

  In addition, you may determine a user's gesture operation | movement as a ratio with respect to the operation | movement resulting from a wrist or an elbow according to the distance of the operation center 124 and the 2nd acceleration sensor 11. FIG. In this case, it is possible to express the gesture operation performed by the user more specifically as a specific value.

  When the acceleration vector output from the first subtraction unit 13 and the acceleration vector output from the second subtraction unit 14 do not exist on the same plane, the acceleration measured by the first acceleration sensor 10 is expressed as Projective transformation is performed into a plane formed by the acceleration vector measured by the two acceleration sensor 11 and the origin of the coordinate system set by the first acceleration sensor 10. And you may make it the structure which calculates each normal line of the acceleration by which projection conversion was carried out, and the acceleration measured in a 2nd acceleration sensor. In this case, there is an effect that it is possible to avoid a situation in which the operation center 124 caused by an error or the like of the acceleration sensor does not exist.

  In the present invention, the coordinate systems set in the first acceleration sensor 10 and the second acceleration sensor 11 are not limited to independent coordinate systems, and are measured by the first acceleration sensor 10, for example. A vector obtained by converting the acceleration vector 120 into the orthogonal coordinates used in the first acceleration sensor 10 may be used.

  In the first embodiment of the present invention, the line segment 122 that is the normal line of the first acceleration vector 120 by the gesture operation and the line segment 123 that is the normal line of the second acceleration vector 121 by the gesture operation are If the motion center 124 cannot be calculated due to, for example, an error in measurement information in the acceleration sensor, it may be determined that the remote controller 20 has been gesture-operated using the entire body of the user.

  The acceleration sensor used in the first embodiment of the present invention is not limited to one that can measure three axes, and for example, an acceleration sensor that can measure two axes may be used. In this case, the first acceleration sensor 10 and the first acceleration sensor 10 are arranged so that the x axis and the y axis are perpendicular to the longitudinal direction of the remote control device 20 with respect to the measurement axis of the biaxial acceleration sensor in which the x and y axes orthogonal to each other are set. The second acceleration sensor 11 may be arranged. Note that the first acceleration sensor 10 and the second acceleration sensor 11 may be arranged so that the x and y axes are parallel to each other.

  Hereinafter, the operation of the remote control device 20 according to Embodiment 1 of the present invention will be described with reference to the drawings.

  FIG. 4 is a flowchart showing the operation of remote control device 20 when the user performs a gesture operation of remote control device 20. It is assumed that a threshold value is set in advance in the gravity register 12 of the remote control device 20, and the determination unit 15 is set in advance with a first value and a second value that is larger than the first value.

  (Step S501) When the operation of the remote control device 20 is on, the gravity register 12 acquires an acceleration vector from the first acceleration sensor 10 and the second acceleration sensor 11, and the two acceleration vectors are acquired. It is determined whether or not the magnitude of the difference is smaller than a predetermined threshold value. If it is determined that the value is smaller, the process proceeds to step S502. If it is determined that the value is large, the process proceeds to step S503.

  (Step S502) When it is determined that the gravity register 12 is smaller than a predetermined threshold value, the acceleration vector measured by the first acceleration sensor 10 or the second acceleration sensor 11 is accumulated as a gravity acceleration vector, and Step S501 Return to.

  (Step S503) When it is determined that the gravity register 12 is larger than the predetermined threshold value, the first subtraction unit 13 acquires an acceleration vector measured by the first acceleration sensor 10, and from the acquired acceleration vector, The first acceleration due to the gesture operation, which is the difference between the gravity acceleration vectors stored in the gravity register 12, is calculated and notified to the determination unit 15. Further, the second subtraction unit 14 performs the same operation based on the acceleration vector acquired from the second acceleration sensor 11. Then, the process proceeds to step S504.

  (Step S <b> 504) When the first subtraction unit 13 and the second subtraction unit 14 notify the acceleration vector based on the gesture operation from the first subtraction unit 13 and the second subtraction unit 14, the determination unit 15 performs the first acceleration vector 120 based on the gesture operation and the first acceleration vector based on the gesture operation. A plane S sharing the origin of two acceleration vectors is calculated. Next, a line segment 122 orthogonal to the acceleration vector 120, belonging to the plane S and passing through the origin of the acceleration vector 120 is calculated, and further orthogonal to the acceleration vector 121, belonging to the plane S, and the origin of the acceleration vector 121 The line segment 123 passing through is calculated, and finally, the intersection of the line segment 122 and the line segment 123 is calculated.

  (Step S505) Next, it is determined whether or not the motion center 124 has been calculated. If the motion center 124 is calculated, the process proceeds to step S506, and if not calculated, the process proceeds to step S511.

  (Step S506) Furthermore, when the operation center 124 is calculated, the distance between the second acceleration sensor 11 and the operation center 124 is calculated, and the process proceeds to Step S507.

  (Step S507) Then, it is determined whether or not the calculated distance between the second acceleration sensor 11 and the operation center 124 is smaller than a predetermined first value. If it is determined that the value is smaller, the process proceeds to step S508. If it is determined that the value is larger, the process proceeds to step S509.

  (Step S508) When the distance between the second acceleration sensor 11 and the motion center 124 is smaller than a predetermined first value, the gesture motion performed on the remote control device 20 is centered on the wrist of the user. It is determined that the operation has been performed, and the operation is terminated.

  (Step S509) Whether or not the distance between the second acceleration sensor 11 and the motion center 124 is larger than a predetermined first value and whether the distance is smaller than a predetermined second value. Determine. If it is determined that the value is smaller, the process proceeds to step S510. If it is determined that the value is larger, the process proceeds to step S511.

  (Step S510) When the distance between the second acceleration sensor 11 and the motion center 124 is smaller than a predetermined second value, the gesture motion performed on the remote control device 20 is centered on the elbow of the user. It is determined that the operation has been performed, and the operation is terminated.

  (Step S511) When the determination unit 15 cannot calculate the motion center 124 or when the distance between the second acceleration sensor 11 and the motion center 124 is larger than a predetermined second value, the remote control device It is determined that the operation performed on the operation 20 is performed on the entire body of the user, and the operation is terminated.

  According to Embodiment 1 of the present invention, the acceleration vector is acquired by each of the first acceleration sensor 10 and the second acceleration sensor 11, and the difference of the gravitational acceleration vector is calculated from the acquired acceleration vector. It is possible to calculate the operation center 124 calculated from the normal lines of the two acceleration vectors and calculate the distance from the second acceleration sensor 11. Therefore, it is possible to discriminate not the gesture operation of the remote control device 20 itself but the gesture operation of the operator who operates the remote control device 20 from the measurement information of at least two acceleration sensors arranged at different locations of the remote control device 20 main body. There is a possible effect.

(Embodiment 2)
Hereinafter, remote control device 130 according to Embodiment 2 of the present invention will be described with reference to the drawings. The difference from Embodiment 1 of the present invention is that both of the two acceleration sensors provided in remote control device 130 are uniaxial acceleration sensors.

  FIG. 5 is a block diagram of remote control device 130 according to Embodiment 2 of the present invention. 5, the same components as those in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted.

  In FIG. 5, the remote control device 130 includes a first acceleration sensor 30 that can measure only one-axis acceleration, a second acceleration sensor 31 that can measure only one-axis acceleration, and a determination unit 35.

  The first acceleration sensor 30 and the second acceleration sensor 31 are sensors that can measure a uniaxial acceleration as a scalar value. The measurement axis direction in which the first acceleration sensor 30 and the second acceleration sensor 31 perform measurement is perpendicular to the longitudinal direction of the remote control device 130, and the first acceleration sensor 30, the second acceleration sensor 31, and the user's It is assumed that the wrist is set to be parallel to the plane formed by the wrist.

  The determination unit 35 calculates the product of the respective accelerations notified from the first subtraction unit 13 and the second subtraction unit 14, and based on the calculated code, which part of the user's body is the remote controller It is determined whether the device 130 has been gesture-operated.

  Hereinafter, the operation content of the determination unit 35 in Embodiment 2 of the present invention will be described with reference to the drawings.

  FIG. 6 shows the acceleration measured as a scalar value in the first acceleration sensor 30 and the second acceleration sensor 31 when the user performs a gesture operation of the remote control device 130 and the operation center in the operation of the remote control device 130. It is a figure which shows a user's elbow.

  In FIG. 6, a first acceleration 103 measured by the first acceleration sensor 30, a second acceleration 104 measured by the second acceleration sensor 31, a user's wrist 101, and a user's elbow 102 are defined. Furthermore, the wrist 101 passes through the first acceleration sensor 30 and a line segment 131 perpendicular to the longitudinal direction of the remote control device 130 and a line segment 132 that passes through the second acceleration sensor 31 and perpendicular to the longitudinal direction of the remote control device 130. Is positioned between the line segment 131 and the line segment 132, and the elbow 102 is not positioned between the line segment 131 and the line segment 132, and the second acceleration sensor 31 and , Shall be arranged.

  The determination unit 35 first calculates a product of accelerations represented by scalar values notified from the first subtraction unit 13 and the second subtraction unit 14. If the calculated product value is positive, it is determined that the gesture operation performed by the user on the remote control device 130 is an operation centered on the elbow. If the calculated product value is negative, the user operates the remote controller The gesture operation performed on the device 130 is determined as an operation centered on the wrist, and the determination result is output.

  The operation of remote control device 130 in Embodiment 2 of the present invention will be described below with reference to the drawings.

  FIG. 7 is a flowchart showing the operation of remote control device 130 when the user performs a gesture operation of remote control device 130. As in the first embodiment, it is assumed that a threshold value is set in advance in the gravity register 12 in the remote control device 130.

  (Step S <b> 801) When the operation of the remote control device 130 is on, the gravity register 12 acquires a scalar value acceleration from the first acceleration sensor 30 and the second acceleration sensor 31, and acquires the acquired two accelerations. It is determined whether or not the magnitude of the difference is smaller than a predetermined threshold value. If it is determined that the value is smaller, the process proceeds to step S802. If it is determined that the value is large, the process proceeds to step S803.

  (Step S802) When it is determined that the gravity register 12 is smaller than a predetermined threshold value, the acceleration measured by the first acceleration sensor 30 or the second acceleration sensor 31 is accumulated as gravity acceleration, and the process returns to Step S801. .

  (Step S803) When it is determined that the gravity register 12 is larger than the predetermined threshold value, the first subtraction unit 13 acquires the acceleration measured by the first acceleration sensor 30, and from the acquired acceleration, the gravity register 12 is calculated, and the determination unit 35 is notified. Further, the second subtraction unit 14 performs the same operation based on the acceleration notified from the second acceleration sensor 31. Then, the process proceeds to step S804.

  (Step S804) When the acceleration is notified from each of the first subtraction unit 13 and the second subtraction unit 14, the determination unit 35 calculates a product of the notified accelerations, and proceeds to step S805.

  (Step S805) Next, it is determined whether or not the product of the two selected accelerations is positive. If the product is positive, the process proceeds to step 806, and if the product is negative, the process proceeds to step 807.

  (Step S806) When the calculated product is positive, it is determined that the gesture operation performed on the remote control device 130 is performed around the elbow of the user, and the operation ends.

  (Step S807) When the calculated product is negative, it is determined that the gesture operation performed on the remote control device 130 is performed mainly on the wrist of the user, and the operation ends.

  In the second embodiment of the present invention, a line segment 131 that passes through the first acceleration sensor 30 and is perpendicular to the longitudinal direction of the remote controller 130 and a line segment 132 that passes through the second acceleration sensor 31 and is perpendicular to the longitudinal direction of the remote controller 130. And the first acceleration sensor 30 so that the wrist 101 is positioned between the line segment 131 and the line segment 132, and the elbow 102 is not positioned between the line segment 131 and the line segment 132. The second speed sensor 31 is disposed in the remote control device 130, and the first acceleration sensor 30 and the second acceleration sensor 31 respectively acquire the acceleration of the scalar value, and calculate the gravitational acceleration difference from the acquired acceleration. Then, according to the calculated sign of the product of the two accelerations, the gesture operation of the operator who operates the remote control device 130 is determined instead of the gesture operation of the remote control device 130 itself. It is possible to become. Therefore, even if a single-axis sensor that is relatively cheaper than three axes or two axes is used, it is possible to determine the gesture operation of the operator who operates the remote control device 130.

  The operation signal transmission device and the remote control system according to the present invention measure the acceleration excluding the influence of gravitational acceleration in at least one of the first acceleration sensor and the second acceleration sensor provided in the operation signal transmission device. Since the operation center can be calculated from the gesture operation performed by the user of the operation signal transmission device, it is determined by which part the gesture operation of the operator who operates the operation signal transmission device is performed. It becomes possible to do. Therefore, it is expected that the operability of the operation signal transmission device is improved by determining the user's operation from the gesture operation performed on the operation signal transmission device by the user.

The figure which shows the structure of the remote control apparatus in Embodiment 1 of this invention. Block diagram of a remote control device in Embodiment 1 of the present invention The figure which shows two accelerations measured with the remote control apparatus in Embodiment 1 of this invention, and a user's wrist which is an operation | movement center. Flowchart for explaining the operation of the remote control device according to the first embodiment of the present invention. Block diagram of a remote control device in Embodiment 2 of the present invention The figure which shows two accelerations measured with the remote control apparatus in Embodiment 2 of this invention, and an operation center. Flowchart for explaining the operation of the remote control device according to the second embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 1st acceleration sensor 11 2nd acceleration sensor 12 Gravity register 13 1st subtraction part 14 2nd subtraction part 15 The determination part in Embodiment 1 20 The remote control apparatus in Embodiment 1 30 Only the acceleration of 1 axis in Embodiment 2 First acceleration sensor that can be measured 31 Second acceleration sensor that can measure only one-axis acceleration in the second embodiment 35 Determination unit in the second embodiment 103 First acceleration measured in the first acceleration sensor in the second embodiment 102 user's elbow in the second embodiment 104 second acceleration measured by the second acceleration sensor in the second embodiment 120 first acceleration vector due to the gesture operation in the first embodiment 121 gesture operation in the first embodiment The second acceleration vector 122 by the motion center and the first acceleration vector Line segment connecting the speed sensor 10 123 Operation center and the second acceleration sensor 11 line 124 Operation center in the first embodiment 130 Remote control device in the second embodiment 131 The first acceleration sensor passes through the first acceleration sensor. Line segment perpendicular to the longitudinal direction 132 Line segment perpendicular to the longitudinal direction of the remote control device passing through the second acceleration sensor

Claims (12)

An operation signal transmission device including at least two acceleration sensors,
A first acceleration sensor that measures acceleration at a predetermined position of the operation signal transmission device main body;
A second acceleration sensor that measures acceleration at a position different from the position;
When the operation signal transmission device main body is in a substantially stationary state, the acceleration measured by at least one of the first acceleration sensor and the second acceleration sensor is defined as a gravitational acceleration, and is measured by the first acceleration sensor. Subtracting means for calculating a difference between the acceleration measured by the second acceleration sensor and the gravitational acceleration;
Based on the output result of the subtracting means, an operation part specifying means for determining an operation part of a user of the operation signal transmitting device;
An operation signal transmitting apparatus comprising: The operation part specifying unit calculates an operation center that is a substantially center position of a circular motion performed on the operation signal transmission device main body based on the two accelerations output from the subtraction unit, and the operation center, The operation signal transmission device according to claim 1, wherein an operation part of a user of the operation signal transmission device is determined according to a distance from the first acceleration sensor or the second acceleration sensor. When the distance between the movement center and the first acceleration sensor or the second acceleration sensor is smaller than a predetermined first value, the operation part specifying means is operated around the user's wrist. The operation signal transmitting device according to claim 2, wherein it is determined that the operation has been performed. The operation part specifying means determines that the operation is performed by the entire body of the user when the distance is greater than a second value,
The operation signal transmitting apparatus according to claim 3, wherein the second value is larger than the first value. The operation part specifying means determines that the operation is performed around the user's elbow when the distance is larger than the first value and smaller than the second value. The operation signal transmitting apparatus according to claim 4. The first acceleration sensor and the second acceleration sensor measure the acceleration of a scalar value expressed by one axis,
The operation part specifying means determines whether or not the two accelerations output from the subtraction means are encoded, and determines an operation part of a user of the operation signal transmission device according to the determination result. The operation signal transmitting apparatus according to claim 1, wherein The operation signal transmitting apparatus according to claim 6, wherein the operation part specifying unit determines that the operation is performed centering on the wrist of the user when it is determined that the sign is different in the determination. The operation signal according to claim 6 or 7, wherein the operation part specifying unit determines that the operation is performed centering on the elbow of the user when it is determined that the same sign is obtained in the determination. Transmitter device. The gravitational acceleration buffer means transmits the operation signal when the difference between the acceleration measured by the first acceleration sensor and the acceleration measured by the second acceleration sensor is smaller than a predetermined magnitude. The operation signal transmitting apparatus according to claim 1, wherein the apparatus main body is determined to be substantially stationary. The gravitational acceleration buffer means is configured such that the operation signal transmitting device main body is substantially omitted when the amount of change in acceleration measured by an acceleration sensor disposed in the operation signal transmitting device within a predetermined time is smaller than a predetermined value. The operation signal transmitting apparatus according to claim 1, wherein the operation signal transmitting apparatus is determined to be in a stationary state. In a remote control system comprising an operation signal transmission device including at least two acceleration sensors and an operation signal reception device that receives an operation signal of the operation signal transmission device.
First acceleration sensor means for measuring acceleration at a predetermined position of the operation signal transmitting device main body;
A second acceleration sensor means for measuring acceleration at a position other than the position;
When the operation signal transmission device main body is in a substantially stationary state, the acceleration measured by at least one of the first acceleration sensor and the second acceleration sensor is defined as a gravitational acceleration, and is measured by the first acceleration sensor. Subtracting means for calculating a difference between the acceleration measured by the second acceleration sensor and the gravitational acceleration;
Based on the output result of the subtracting means, an operation part specifying means for determining an operation part of a user of the operation signal transmitting device;
A remote control system comprising: In a user operation part determination method comprising: an operation signal transmission device including at least two acceleration sensors; and an operation signal reception device that receives an operation signal of the operation signal transmission device.
A first acceleration sensing step of measuring an acceleration at a predetermined position of the operation signal transmitting device main body using a first acceleration sensor;
A second acceleration sensing step of measuring acceleration at a position other than the position using a second acceleration sensor;
When the operation signal transmission device main body is in a substantially stationary state, the acceleration measured by at least one of the first acceleration sensor and the second acceleration sensor is defined as a gravitational acceleration, and is measured by the first acceleration sensor. A subtraction step of calculating a difference between the acceleration measured by the second acceleration sensor and the gravitational acceleration;
Based on the output result in the subtraction step, an operation part specifying step for determining an operation part of a user of the operation signal transmission device,
A user operation site determination method comprising:

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