JP2017026370A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a geomagnetic sensor and a small size electronic apparatus including at least a vibration motor.SOLUTION: A wearer information measurement apparatus 100 as an electronic apparatus includes: a geomagnetic sensor: and a vibration motor. The geomagnetic sensor and the vibration motor are dispose so that the distance between the geomagnetic sensor and the vibration motor is 10 mm or more; and within a range of 41 mm(W), 41 mm(D)×11 mm(H).SELECTED DRAWING: Figure 3

Description

  The present invention relates to an electronic apparatus provided with a sensor device using a geomagnetic sensor as an example.

  2. Description of the Related Art Conventionally, electronic devices including a magnetic sensor for detecting magnetism and a geomagnetic sensor are known. For example, Patent Document 1 discloses a banknote recognition apparatus including a motor that is a source of magnetic noise and a magnetic sensor that detects the magnetic characteristics of the banknote. In the bill discriminating apparatus equipped with such a magnetic sensor, the magnetic noise generated from the motor does not affect the detection accuracy of the magnetic sensor, so that a predetermined distance is secured between the motor and the magnetic sensor. A first optical sensor light-receiving unit and a first optical sensor light-emitting unit, which are nonmagnetic sensors, are disposed between the two.

  In the electronic apparatus having such a configuration, the motor and the magnetic sensor are disposed apart from each other by a predetermined distance, and the first optical sensor light receiving unit and the first optical sensor light emitting unit disposed between the motor and the magnetic sensor. However, by functioning as a magnetic noise shield, the influence of magnetic noise on the magnetic sensor is reduced.

JP 2010-146162 A

  However, in the above-described banknote identification device, there is no specific numerical description (presentation) regarding the separation distance between the motor and the magnetic sensor, for example, a limited-size electronic device such as a wristwatch-sized wrist device, That is, a suitable arrangement for application to a small electronic device has been demanded.

  The present invention has been made to solve at least a part of the above-described problems, and includes a geomagnetic sensor that may be affected by magnetic noise, and a component that can be a source of magnetic noise. A small electronic device such as a wrist device that is limited in the size of a case (housing) can be realized as the following form or application example.

  Application Example 1 An electronic apparatus according to this application example includes a geomagnetic sensor and a vibration motor, and the geomagnetic sensor and the vibration motor have a distance of 10 mm or more between the geomagnetic sensor and the vibration motor. And 41 mm × 41 mm × 11 mm.

  According to this application example, the influence of the magnetism of the vibration motor on the geomagnetic sensor can be reduced. As a result, for example, even a small electronic device configured to a limited size such as a wristwatch-sized wrist device, the influence of magnetic noise on the geomagnetic sensor can be suppressed, and stable geomagnetism can be achieved. Can be detected. It should be noted that the geomagnetic sensor and the vibration motor that may generate magnetic noise are less susceptible to the influence of magnetic noise on the measurement of the geomagnetic sensor as the distance between them increases. On the other hand, as the distance between the geomagnetic sensor and the vibration motor increases, the area of the mounting plane (hereinafter also referred to as a mounting surface) increases. This is the same in the direction orthogonal to the mounting plane. If the distance is too large, it becomes unsuitable for a small device such as a wrist-worn type or a portable type. On the other hand, by arranging the geomagnetic sensor and the vibration motor within the range as in this application example, a small electronic device such as a wrist-mounted type or a portable type can be realized. As described above, according to the configuration of this application example, a small electronic device that does not affect the geomagnetic sensor even if the geomagnetic sensor and the vibration motor that can be a generation source of the magnetic noise are provided is realized. It becomes possible to do.

  In addition, the distance between each component in this specification refers to each component (for example, a geomagnetic sensor or a vibration motor) arranged from a direction orthogonal to the mounting plane on which each component is arranged (plane Distance), in other words, a two-dimensional distance. Specifically, it means the shortest interval (distance) among the distances between the outer edge of a component (for example, a component such as a vibration motor) that generates magnetic noise and the outer edge of the geomagnetic sensor.

  Application Example 2 In the electronic device according to the application example described above, the geomagnetic sensor and the vibration motor have a distance of 20 mm or more between the geomagnetic sensor and the vibration motor and a range of 41 mm × 41 mm × 11 mm. It is preferable to arrange in the inside.

  According to this application example, the influence of magnetic noise caused by the magnetism of the vibration motor on the geomagnetic sensor can be further suppressed. Thereby, it is possible to obtain an electronic device capable of measuring geomagnetism more stably.

  Application Example 3 In the electronic device according to the application example described above, the electronic device further includes a battery substrate to which a battery terminal is connected, and the battery substrate has a distance of 5 mm or more between the geomagnetic sensor and the 41 mm × 41 mm. It is preferable to arrange | position in the range of * 11 mm.

  According to this application example, the magnetic noise generated from the battery substrate to which the battery terminal is connected can be made difficult to influence the geomagnetic sensor. This makes it possible to suppress the influence of magnetic noise on the geomagnetic sensor even if it is a wrist device, for example, as large as a wristwatch, equipped with a vibration motor and battery board (battery), and can realize a desired function. Can be obtained.

  Application Example 4 In the electronic device according to the application example described above, it is preferable that the battery substrate is disposed within a range of 10 mm or more and the 41 mm × 41 mm × 11 mm distance from the geomagnetic sensor. .

  According to this application example, it is possible to further suppress the influence of magnetic noise generated from the battery substrate to which the battery terminal is connected to the geomagnetic sensor. Thereby, the electronic device which can perform the measurement of the more stable geomagnetism can be obtained.

  Application Example 5 In the electronic device according to the application example described above, the electronic device further includes a DCDC converter, and the DCDC converter is disposed within a range of 41 mm × 41 mm × 11 mm at a distance of 5 mm or more from the geomagnetic sensor. It is preferable that

  According to this application example, it is possible to make the magnetic noise generated from the DCDC converter for the geomagnetic sensor difficult to influence the geomagnetic sensor. As a result, even a wrist device about the size of a wristwatch, for example, equipped with a vibration motor, a battery substrate (battery), and a DCDC converter can suppress the influence of magnetic noise on the geomagnetic sensor, It is possible to obtain a small electronic device that can realize the above functions.

  Application Example 6 In the electronic apparatus according to the application example described above, it is preferable that the DCDC converter is disposed within a range of 10 mm or more and the 41 mm × 41 mm × 11 mm distance from the geomagnetic sensor. .

  According to this application example, the influence of magnetic noise generated from the DCDC converter on the geomagnetic sensor can be further suppressed. Thereby, the electronic device which can perform the measurement of the more stable geomagnetism can be obtained.

  In the application example described above, the distance between the geomagnetic sensor and a component that may cause magnetic noise, such as a vibration motor, a battery substrate, and a DCDC converter, increases as the distance increases (as the distance increases). The influence of magnetic noise is reduced. On the other hand, as the distance between the geomagnetic sensor and a component that may cause magnetic noise, such as a vibration motor, a battery substrate, and a DCDC converter increases, the area of the mounting plane increases as the distance increases. This is the same in the direction (thickness direction) perpendicular to the mounting plane. If the distance is too large, it becomes unsuitable for a wrist-worn type or portable small device, for example. On the other hand, the distance between the geomagnetic sensor and a component that may cause magnetic noise such as a vibration motor, a battery substrate, and a DCDC converter is arranged within a range of 41 mm × 41 mm × 11 mm as in the above application example. Thus, for example, a small electronic device such as a wrist-worn type or a portable type can be realized.

  Application Example 7 In the electronic device according to the application example, the electronic device further includes a substrate to which the geomagnetic sensor, the battery substrate, the DCDC converter, and the vibration motor are connected, and the mounting surface of the substrate is defined as the mounting surface. When viewed from above in a vertical direction, the battery substrate, the DCDC converter, the vibration motor, and the geomagnetic sensor are opposite to a virtual line extending in the direction along the mounting surface through the center of the substrate. It is preferable to arrange in the region.

  According to this application example, when the mounting surface of the substrate to which at least the geomagnetic sensor is mounted on the mounting surface and the battery substrate, the DCDC converter, and the vibration motor are connected is viewed in plan view, the region where the geomagnetic sensor is disposed The other battery substrate, the DCDC converter, and the region where the vibration motor is disposed can be spaced apart. In this way, when components that may cause magnetic noise that affects geomagnetic measurements are placed on a single board, the effect of magnetic noise on the geomagnetic sensor can be reduced by increasing the distance from the geomagnetic sensor. While suppressing, it is possible to efficiently perform the layout of the component parts, which can contribute to downsizing of the electronic device.

  Application Example 8 In the electronic device according to the application example described above, the electronic device further includes a communication antenna, and the communication antenna is arranged in a region on the same side as the geomagnetic sensor in a region provided by the virtual line. Preferably it is.

  According to this application example, the communication antenna and the geomagnetic sensor are disposed in the same region provided by the virtual line. Geomagnetic sensors and communication antennas, for example, have the property of being easily affected by metal plates, etc., and by arranging them in the same area, the layout design considering the influence of other members on the geomagnetic sensor and communication antenna It becomes possible to carry out efficiently.

  Application Example 9 In the electronic device according to the application example described above, the electronic device further includes a GPS antenna, and the GPS antenna is arranged in a region on the same side as the geomagnetic sensor in a region provided by the virtual line. Preferably it is.

  According to this application example, the GPS antenna and the geomagnetic sensor are disposed in the same region provided by the virtual line. Geomagnetic sensors and GPS antennas have the property of being easily affected by, for example, metal plates, and by arranging them in the same area, an arrangement design that takes into account the influence of other members on the geomagnetic sensor and communication antenna can be designed. It becomes possible to carry out efficiently.

  Application Example 10 In the electronic device according to the application example described above, the electronic device further includes an acceleration sensor, and the acceleration sensor is arranged so that a detection axis direction of the acceleration sensor is along a detection axis direction of the geomagnetic sensor. It is preferable.

  According to this application example, since the acceleration detection axis direction and the geomagnetic detection axis direction are substantially the same, for example, the processing of detection data relating to the acceleration direction and the geomagnetism direction is compared with the case where the axial direction is significantly different. Thus, it can be performed more easily.

The perspective view which shows the outline of the wearer information measuring device which concerns on embodiment of the electronic device of this invention. Sectional drawing in fF of FIG. 1 which shows the cross section of a wearer information measuring device. The top view which shows arrangement | positioning of the component with which the wearer information measuring device was equipped. The top view explaining the influence of the magnetic force of the other component with respect to the geomagnetic sensor among components. The graph which shows the presence or absence of the influence of the magnetism by the distance of a geomagnetic sensor and a battery substrate. The graph which shows the presence or absence of the influence of the magnetism by the distance of a geomagnetic sensor and a vibration motor. The graph which shows the presence or absence of the influence of the magnetism by the distance of a geomagnetic sensor and a DCDC converter. The block diagram which shows schematic structure of a wearer information measurement apparatus.

  Hereinafter, a wearable wearer information measurement device according to an embodiment of an electronic device of the present invention will be described in detail with reference to the accompanying drawings. In the attached drawings, the dimensions and scales of each part are appropriately different from actual ones. Further, since the embodiments described below are preferable specific examples of the present invention, various technically preferable limitations are attached thereto. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these forms.

  First, a wearable wearer information measuring device according to an embodiment of an electronic apparatus of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing an outline of a wearer information measuring apparatus according to an embodiment of an electronic apparatus of the present invention. FIG. 2 is a cross-sectional view taken along line f-F in FIG. In FIG. 1 and FIG. 2, for convenience of explanation, three orthogonal axes are shown as an X axis, a Y axis, and a Z axis, respectively, and the wearing direction to the user (wearer) is a Z axis direction.

  As shown in FIG. 1, the wearable wearer information measuring device 100 is worn on a given part (for example, wrist) of a user (wearer), and the position information, exercise information, etc. of the user (wearer) are displayed. To detect. The wearer information measurement device 100 includes a device main body 10 that is worn by a user and detects position information, exercise information, and the like, and a band unit 15 that is attached to the device main body 10 and for mounting the device main body 10 on the user. . Note that the wearer information measuring device 100 may be provided with a function of detecting biological information such as pulse wave information and a function of acquiring time information in addition to position information and exercise information of the user (wearer). Good.

  In the device main body 10, a bottom case 13 is disposed on the user mounting side, and a top case 11 is disposed on the side opposite to the user mounting side. A bezel 18 is provided on the top side (top case 11) of the device body 10, and a glass plate 19 is provided as a top plate portion (outer wall) that is disposed inside the bezel 18 and protects the internal structure. Yes. The device main body 10 may be configured such that the user can view the display on a display unit such as a liquid crystal display (LCD 34) provided directly below the glass plate 19 via the glass plate 19. That is, in the wearer information measuring apparatus 100 of the present embodiment, various information such as detected position information, exercise information, or time information is displayed on the LCD 34 as a display unit, and the display is displayed from the top side of the device body 10 to the user. May be presented. In addition, the wearer information measuring device 100 may transmit various information such as detected position information, exercise information, or time information by vibration generated by a vibration motor described later, for example. In addition, a pair of band mounting portions 17 that are connecting portions to the band portion 15 are provided on both sides (Y-axis direction) of the bottom case 13.

  Although the example in which the top plate portion of the device body 10 is realized by the glass plate 19 is shown here, the LCD 34 is a transparent member that can be viewed, and the inside of the top case 11 and the bottom case 13 such as the LCD 34 (see FIG. 2). The top plate portion can be made of a material other than glass, such as transparent plastic, as long as the member has a strength capable of protecting the configuration included in the illustrated internal space 16). Moreover, although the structural example in which the bezel 18 was provided was shown, the structure in which the bezel 18 is not provided may be used.

  Next, an example of a cross-sectional structure of the device main body 10 in the wearer information measurement device 100 will be described with reference to FIG.

  As shown in FIG. 2, the device body 10 is provided with an internal space 16 surrounded by a top case 11, a bottom case 13, and a glass plate 19. The internal space 16 is connected to a circuit board 12 as a board, a GPS (Global Positioning System) antenna 64 connected to the circuit board 12, a geomagnetic sensor 55, a vibration motor 20, and a terminal of a secondary battery 70 as a battery. Electronic parts such as the battery board 72, the DCDC converter (DC-DC converter) 80, the first circuit parts 102 and the second circuit parts 104 (see FIG. 3) constituting the MCU 110 (see FIG. 3), and A liquid crystal display (LCD 34) and the like are arranged. However, the configuration of the wearer information measurement device 100 (device main body 10) is not limited to the configuration shown in FIG. 1, and other configurations can be added or some configurations can be omitted. For example, the communication unit 40 (see FIG. 8) including the communication antenna 43 for communicating with other information processing devices (not shown), or the acceleration sensor (for measuring movement information) 66 (see FIG. 8) An atmospheric pressure sensor (for altitude measurement) 50 (see FIG. 8) or the like may be added, or the GPS antenna 64 (see FIG. 3) may be omitted.

  In the liquid crystal display (LCD 34), for example, position information using the GPS or the geomagnetic sensor 55, exercise information such as movement amount and exercise amount, biological information such as pulse rate, time information such as current time, etc. Is displayed. This display can be viewed (viewed) by the user via the glass plate 19.

  The circuit board 12 has electronic components such as a GPS antenna 64, a geomagnetic sensor 55, a vibration motor 20, a DCDC converter 80, and the like on one surface (a mounting surface relatively closer to the LCD 34 of the two surfaces), and The connection part of the liquid crystal display (LCD 34) is mounted, and the terminal of the secondary battery 70 is connected to the other surface on the opposite side (the mounting surface relatively far from the LCD 34 of the two surfaces). A battery substrate 72 is mounted. The circuit board 12 is made of an epoxy resin substrate containing glass fiber, and a wiring pattern made of copper foil or the like is formed on both surfaces.

  Hereinafter, each component and the arrangement thereof will be described with reference to FIGS. FIG. 3 is a plan view showing the arrangement of the components provided in the wearer information measuring apparatus 100 when the mounting surface of the circuit board 12 is viewed in plan. FIG. 4 is a plan view for explaining the influence of the magnetic force of other components on the geomagnetic sensor. In FIGS. 3 and 4, the three axes orthogonal to each other are shown as the X axis, the Y axis, and the Z axis as the same directions as in FIGS. 1 and 2. FIG. 5 is a graph showing the presence or absence of magnetic influence due to the distance between the geomagnetic sensor and the battery substrate, and FIG. 6 is a graph showing the presence or absence of magnetic influence due to the distance between the geomagnetic sensor and the vibration motor. FIG. 7 is a graph showing the presence or absence of the influence of magnetism due to the distance between the geomagnetic sensor and the DCDC converter. In addition, the numerical range shown in FIGS. 5-7 means that it is more than the value of the left side of a waveform (-) and less than the value of the right side of a waveform (-). For example, “5 mm to 10 mm” is “5 mm or more and less than 10 mm”.

  The GPS antenna 64 receives radio waves (radio signals) from GPS satellites (not shown). The received radio wave (wireless signal) from the GPS satellite is calculated by an arithmetic circuit (not shown) and displayed (notified) on the LCD 34 as the wearer's position information and time information.

  The geomagnetic sensor 55 can measure the direction of the magnetic field in the geomagnetism. The measurement result measured by the geomagnetic sensor 55 is calculated by an arithmetic circuit, and is displayed (notified) on the LCD 34 as azimuth information (one of position information) related to the wearer. The geomagnetic sensor 55 is located in a place where magnetic field is disturbed (for example, around a magnetic material such as a coil or magnetic metal that generates magnetic noise) or in a place where magnetic noise is likely to occur. Accurate orientation measurement becomes difficult due to magnetic field disturbance and magnetic noise. The inventors verified the generated magnetic noise and the degree of influence on the geomagnetic sensor 55 for the electronic parts and components of this configuration example, and the battery substrate 72, the vibration motor 20, and the DCDC converter 80 are It has been found that the geomagnetic sensor 55 may be affected. And it discovered that a response | compatibility was required with respect to arrangement | positioning with the battery board | substrate 72, the vibration motor 20, the DCDC converter 80, and the geomagnetic sensor 55. FIG. Details of the arrangement of these electronic components and components will be described later with reference to FIG. 4 and FIGS.

  The secondary battery 70 is a rechargeable battery (for example, a lithium secondary battery), and terminals of both electrodes are connected to the battery substrate 72 and supplies power to a circuit that controls a power source including, for example, the DCDC converter 80. The power is supplied to each circuit by being converted into a predetermined voltage by this circuit, and operates a circuit for detecting position information, a circuit for driving the LCD 34, a circuit for controlling each circuit, and the like. Although an example in which the secondary battery 70 is used as the battery has been described here, a primary battery that does not require charging may be used as the battery.

  The battery substrate 72 to which the terminal of the secondary battery 70 is connected generates magnetic noise that has an influence on the geomagnetic sensor 55, and as shown in FIG. 4, a region having a predetermined distance around the battery substrate 72. Within the range of 72a, the measurement of the geomagnetic sensor 55 is affected. Specifically, as shown in the table of FIG. 5, when the distance L2 from the battery substrate 72 (see FIG. 4) is less than 5 mm, magnetic noise affecting the geomagnetic sensor 55 is generated, When the distance L2 from the battery substrate 72 is 5 mm or more, there is a slight effect, but the level of the geomagnetic sensor 55 is hardly affected. Therefore, it is preferable to place the geomagnetic sensor 55 at a position where the distance L2 from the battery substrate 72 is 5 mm or more. More preferably, the distance L2 from the battery substrate 72 is 10 mm or more. In this way, by setting the distance L2 to 10 mm or more, the magnetic noise level that hardly affects the measurement of the geomagnetic sensor 55 is obtained.

  From this verification result, in this embodiment, as shown in FIGS. 3 and 4, the distance L2 which is the shortest distance between the battery substrate 72 and the geomagnetic sensor 55 is set to 10 mm or more, and the battery substrate 72 and the geomagnetic sensor. 55.

  The vibration motor 20 performs some notification to the user by a vibration operation, and can be used as a user interface different from the LCD 34. As shown in FIGS. 4 and 6, the vibration motor 20 has a wide magnetic noise influence range, and as shown in FIG. 4, the geomagnetic sensor is within a range of a region 20 a having a predetermined distance from the vibration motor 20. Affects 55 measurements. Specifically, as shown in the table of FIG. 6, when the distance L1 from the vibration motor 20 (see FIG. 4) is less than 10 mm, magnetic noise that affects the geomagnetic sensor 55 is generated. When the distance L1 from the vibration motor 20 is 10 mm or more, there is a slight influence, but the level of the geomagnetic sensor 55 is hardly affected. Therefore, it is preferable to arrange the geomagnetic sensor 55 at a position where the distance L1 from the vibration motor 20 is 10 mm or more. More preferably, the distance L1 from the vibration motor 20 is 20 mm or more. Thus, by setting the distance L1 to 20 mm or more, a magnetic noise level that hardly affects the measurement of the geomagnetic sensor 55 is obtained.

  From this verification result, in this embodiment, as shown in FIGS. 3 and 4, the distance L1, which is the shortest distance between the vibration motor 20 and the geomagnetic sensor 55, is set to 20 mm or more, and the vibration motor 20 and the geomagnetic sensor. 55.

  The DCDC converter 80 including the first DCDC converter element 80b, the second DCDC converter element 80c, and the third DCDC converter element 80d steps down the voltage of the power supplied from the secondary battery 70, and supports Can be supplied to circuit elements. The DCDC converter 80 generates magnetic noise having an influence on the geomagnetic sensor 55. As shown in FIG. 4, the DCDC converter 80 has a predetermined distance around the DCDC converter 80 within the area 80a. This affects the measurement. Specifically, as shown in the table of FIG. 7, when the distance L3 from the DCDC converter 80 (see FIG. 4) is less than 5 mm, magnetic noise affecting the geomagnetic sensor 55 is generated. When the distance L3 from the DCDC converter 80 is 5 mm or more, there is a slight influence, but the level of the measurement by the geomagnetic sensor 55 is hardly exerted. Therefore, it is preferable to place the geomagnetic sensor 55 at a position where the distance L3 from the DCDC converter 80 is 5 mm or more. More preferably, the distance L3 from the DCDC converter 80 is 10 mm or more. In this way, by setting the distance L3 to 10 mm or more, the magnetic noise level that hardly affects the measurement of the geomagnetic sensor 55 is obtained.

  From this verification result, in this embodiment, as shown in FIGS. 3 and 4, the shortest distance L3 between the DCDC converter 80 and the geomagnetic sensor 55 is set to 10 mm or more, and the DCDC converter 80 and the geomagnetic sensor. 55.

  Further, the battery substrate 72 that generates magnetic noise, the vibration motor 20, the DCDC converter 80, and the geomagnetic sensor 55 are viewed in a plan view as viewed from the direction facing the mounting surface of the circuit board 12 (Z-axis direction in the figure). It is preferable that the circuit board 12 is disposed in a region opposite to the virtual line CL3 passing through the center G of the circuit board 12 along the mounting surface.

  With such an arrangement, when the mounting surface is viewed in plan, the area where the geomagnetic sensor 55 is arranged and the area where the other battery substrate 72, the vibration motor 20, and the DCDC converter 80 are arranged are arranged apart from each other. Will be. In this manner, components that may cause magnetic noise that affects the measurement of the geomagnetic sensor 55 are arranged together in one area divided by the virtual line CL3, and the distance from the geomagnetic sensor 55 is increased. Thus, the influence of magnetic noise on the geomagnetic sensor 55 can be suppressed, and the layout of components can be performed efficiently, and the wearer information measuring device 100 (device main body 10) can be downsized. it can.

  The above-described center G of the circuit board 12 includes a center line CL1 along the Y-axis that equally divides the circuit board 12 in the X-axis direction, and recesses 25 provided at both ends of the circuit board 12 in the X-axis direction. , 26 are equally divided in the Y-axis direction and set as intersections with the center line CL2 along the X-axis. However, the position of the center G does not necessarily have to be the present configuration, and is approximately in the XY plane of the circuit board 12. You may set to a center part.

  The distances L1, L2, and L3 between the geomagnetic sensor 55 and the battery substrate 72, the vibration motor 20, and the DCDC converter 80 are more apart from each other (the longer they are), the magnetic noise with respect to the measurement of the geomagnetic sensor 55. It becomes difficult to be affected. On the other hand, the distance L1, L2, L3 increases as the distance increases (the longer the distance), the larger the circuit board mounting surface (X-axis-Y-axis direction plane). The same applies to the Z-axis direction orthogonal to the circuit board mounting surface (plane in the X-axis to Y-axis direction), and is not suitable for, for example, wrist-worn or portable small devices. Accordingly, by arranging the components including the geomagnetic sensor 55, the battery substrate 72, the vibration motor 20, and the DCDC converter 80 within a range of vertical Qy × horizontal Qx × height Qz = 41 mm × 41 mm × 11 mm, for example, a list A size that can be used for a small wearer information measuring apparatus 100 (apparatus body 10) such as a wearable type or a portable type can be realized.

  It is more preferable to dispose the components including the geomagnetic sensor 55, the battery substrate 72, the vibration motor 20, and the DCDC converter 80 within a range of vertical Qy × horizontal Qx × height Qz = 35 mm × 35 mm × 10 mm. . By arranging the components within such a range, a smaller (lighter) wearer information measuring device 100 (equipment main body 10) can be realized. For example, climbing with a pressure sensor (altitude sensor) mounted Even in the case of a configuration for a person, it is possible to relieve the discomfort associated with wearing in a harsh use environment during mountain climbing.

  More preferably, the components including the geomagnetic sensor 55, the battery substrate 72, the vibration motor 20, and the DCDC converter 80 are arranged in a range of vertical Qy × horizontal Qx × height Qz = 30 mm × 30 mm × 8 mm. By disposing the components within such a range, it is possible to realize a smaller (lighter) wearer information measuring device 100 (device main body 10) and further improve the wearability. Such a smaller (lighter) wearer information measuring device 100 can be suitably applied to a user who performs a severe (strong) exercise such as an exercise analysis.

  The circuit board 12 may be mounted with an MCU (Micro Controller Unit) 110 including a first circuit component 102 and a second circuit component 104 that control the operation of the wearer information measurement device 100.

  The circuit board 12 may be connected to an antenna (communication antenna) 43 for data communication that constitutes the communication unit 40. If the antenna 43 for data communication is provided, it is possible to transmit and receive the position information, biological information, and the like that have been subjected to arithmetic processing to and from devices other than the device main body 10. In other words, for example, position information and biological information can be displayed or notified on the LCD 34 (display unit) provided separately from the device main body 10 of the wearer information measurement apparatus 100. Accordingly, it is possible to provide a wearer information measurement system including at least the wearer information measurement device 100 and the LCD 34 (display unit) provided separately.

  The data communication antenna (communication antenna) 43 and the GPS antenna 64 pass through the center G of the circuit board 12 in a plan view as viewed from the direction facing the mounting surface of the circuit board 12 (Z-axis direction in the figure). Of the virtual region divided into two by the virtual line CL3 in the direction along the mounting surface, it is preferable to be disposed in one region where the geomagnetic sensor 55 is disposed.

  The geomagnetic sensor 55, the communication antenna (communication antenna) 43, and the GPS antenna 64 have the property of being easily affected by, for example, a metal plate, and by arranging them in the same region, a case for storing them ( Increased layout flexibility for metal reinforcing plates and decorative plates (for example, bezel 18) that reinforce the housing such as the top case 11 and the bottom case 13) and improve the appearance, and increase the efficiency of the arrangement Thus, further miniaturization can be realized.

  Further, the acceleration sensor 66 (see FIG. 8) may be connected to the circuit board 12. The acceleration sensor 66 (see FIG. 8) is preferably arranged so that the detection axis is oriented in three orthogonal directions. As described above, by providing the acceleration sensor 66, the movement direction and the movement amount of the wearer can be measured. In that case, it is preferable that the acceleration sensor 66 is arranged so that at least one detection axis direction is along the detection axis direction of the geomagnetic sensor 55.

  Thus, by making the detection axes of the geomagnetic sensor 55 and the acceleration sensor 66 substantially in the same direction, the space efficiency related to the arrangement of the geomagnetic sensor 55 and the acceleration sensor 66 can be enhanced. In addition, since the acceleration detection direction and the geomagnetism detection direction are substantially the same, the relationship between the acceleration direction (movement direction) and the geomagnetism direction, for example, grasping detailed movement results and calculation processing related to momentum are more performed. It becomes possible to carry out simply.

  Furthermore, an atmospheric pressure sensor (not shown) may be connected to the circuit board 12. The atmospheric pressure sensor can acquire atmospheric pressure data. Then, based on the atmospheric pressure data acquired by the atmospheric pressure sensor, the wearer information measuring device 100 can provide altitude (altitude) information of the location (current position) where the user (wearer) is located. As described above, the wearer information measuring device 100 connected to the atmospheric pressure sensor can present altitude information (elevation information) of a place where the user (wearer) is present, and thus is provided as a device suitable for climbers and hikers, for example. can do.

  Next, the configuration of the wearer information measuring apparatus 100 will be described with reference to FIG. FIG. 8 is a block diagram illustrating an example of the configuration of the wearer information measurement device 100. The wearer information measurement device 100 includes an MCU (Micro Controller Unit) 110. The MCU 110 is a built-in microprocessor that integrates a computer system into an integrated circuit, and controls the operation of the wearer information measurement apparatus 100. Further, the MCU 110 can include an arithmetic circuit (not shown) for data acquired and measured by various sensors such as the geomagnetic sensor 55.

  The MCU 110 includes at least the GPS communication unit 60 and the display control unit 30. The GPS communication unit 60 performs processes such as satellite signal reception, GPS satellite acquisition, position information generation, and time correction information generation. In addition, the display control unit 30 performs processing such as holding and correcting position information, time information, or biological information, and controls the display control unit 30.

  Specifically, the MCU 110 controls the GPS communication unit 60 and executes a process of extracting a satellite signal from at least a signal received by the GPS antenna 64. The MCU 110 also controls the display control unit 30 and controls the display control unit 30 via the drive circuit 32. The GPS antenna 64 receives satellite signals from a plurality of GPS satellites. However, since the GPS antenna 64 may slightly receive unnecessary radio waves other than the satellite signal, the SAW filter 62 performs a process of extracting the satellite signal from the signal received by the GPS antenna 64. That is, the SAW filter 62 is configured as a band-pass filter that passes a signal in a predetermined frequency band. The MCU 110 supplies power to the GPS antenna 64 via the balun 63. In the present embodiment, power supply to the GPS antenna 64 is balanced power supply.

  The GPS communication unit 60 includes an RF (Radio Frequency) unit and a baseband unit (not shown). The GPS communication unit 60 down-converts an analog satellite signal of a predetermined frequency band (for example, 1.5 GHz band) extracted by the SAW filter 62 into a signal of an intermediate frequency band, and an A / D converter (Analogue-to-Digital) Converter) converts the signal into a digital signal, removes the carrier wave, etc., demodulates the navigation message, and obtains orbit information and GPS time information included in the navigation message. The position calculation process using the acquired orbit information or the like may be performed by the MCU 110 or the GPS communication unit 60. Since GPS satellite signal processing and position calculation processing are well known, detailed description thereof will be omitted.

  Further, the MCU 110 controls the process of charging the secondary battery 70 using the charge control circuit 76 and the SVD circuit 73, and supplies power to electronic components such as DCDC converter elements 80b, 80c, 80d and LDOs 74, 75, for example. . When the charging control circuit 76 is connected to an external terminal 71 such as a USB terminal, for example, the charging control circuit 76 is connected to an external power source and can charge the secondary battery 70.

  The MCU 110 is connected to the key 14. The key 14 functions as an input unit for switching modes such as a measurement mode and a display mode from the outside. In this configuration, there are five operation buttons (5 keys).

  The MCU 110 includes sensors such as an atmospheric pressure sensor 50, a geomagnetic sensor 55, a temperature sensor 65, and an acceleration sensor 66. Hereinafter, each sensor will be described.

  The atmospheric pressure sensor 50 acquires atmospheric pressure data and transmits it to the MCU 110. The MCU 110 can calculate the altitude (elevation) of the place where the wearer is based on the sent atmospheric pressure data, and can present it as altitude (elevation) information from the LCD 34 as a display unit, for example.

  The geomagnetic sensor 55 acquires geomagnetic data obtained by measuring the direction of the magnetic field in the geomagnetism and transmits it to the MCU 110. The MCU 110 can perform arithmetic processing based on the transmitted geomagnetic data, and can present it as position information from the LCD 34 serving as a display unit, for example, as azimuth information (position information) at the place where the wearer is present.

  The acceleration sensor 66 acquires data related to the movement amount and direction of the wearer and transmits the data to the MCU 110. The MCU 110 processes the data transmitted from the acceleration sensor 66 and calculates the movement amount data of the wearer. Then, the MCU 110 can obtain the wearer's exercise amount (movement amount), calorie consumption, and the like by using this movement amount data in combination with the altitude (elevation) information, GPS information, and the like. It can be presented from the LCD 34 as a display unit.

  The temperature sensor 65 acquires temperature information around the wearer and transmits it to the MCU 110. The MCU 110 can perform temperature compensation processing and calorie consumption calculation of each electronic component based on the sent temperature information.

  Moreover, MCU110 is provided with the vibration motor 20 as a means to transmit information to a wearer by vibration using the alerting | reporting part 90. FIG. The MCU 110 controls the notification unit 90 and can notify various information such as detected position information, biological information, and time information by vibration (vibration) by the vibration that drives the vibration motor 20. The MCU 110 notifies various information such as position information, biological information, and time information by the vibration motor 20 together with the image display of the LCD 34 by the display control unit 30, or the LCD 34 or the vibration motor as a display unit. 20 may be used for notification.

  In addition, the MCU 110 includes a communication unit 40. The communication unit 40 is a communication unit such as Bluetooth (registered trademark), for example, and includes a communication antenna 43 and a flash memory 47 for communicating with other information processing devices (not shown). The communication unit 40 presents various information such as position information, biological information, or time information obtained by various sensors via another antenna 43 for communication by sending it to other information processing devices for display. be able to. The MCU 110 feeds power to the communication antenna 43 via the balun 42. The flash memory 47 can store, for example, movement amount data of the wearer, exercise amount (movement amount) of the wearer, calorie consumption, and the like.

  As described above, by including the communication unit 40 including the communication antenna 43 and the like, other information processing devices (for example, a portable information terminal device and a mobile phone) provided separately are connected to the wearer. Position information, time information, exercise information, biological information, or the like can be displayed or notified.

  According to the wearer information measuring apparatus 100 as the electronic device described above, the positional relationship between the vibration motor 20, the battery substrate 72, the DCDC converter 80, and the geomagnetic sensor 55 affected by magnetic noise on the geomagnetic sensor 55 is set. Thus, the influence of magnetic noise on the geomagnetic sensor 55 can be reduced. Thereby, for example, even a small electronic device configured in a limited size such as a wristwatch-sized wrist device, the influence of magnetic noise on the geomagnetic sensor 55 can be suppressed and stable. Detection of geomagnetism is possible. As a result, a small electronic device (wearer information measuring device 100) including at least the geomagnetic sensor 55 and electronic components (for example, the vibration motor 20, the battery substrate 72, and the DCDC converter 80) that can be a magnetic noise generation source is realized. It becomes possible to do.

  Further, when the mounting surface of the circuit board 12 is viewed in plan, the battery board 72, the DCDC converter 80, and the vibration motor 20 with respect to a virtual line CL3 passing through the center G of the circuit board 12 and along the mounting surface. The geomagnetic sensor 55 is disposed in the opposite region. Thereby, the area | region where the geomagnetic sensor 55 is arrange | positioned, and the area | region where the other battery board 72, the DCDC converter 80, and the vibration motor 20 are arrange | positioned are spaced apart. In this way, by arranging components that may cause magnetic noise that affects geomagnetism measurement, the influence of magnetic noise on the geomagnetic sensor 55 is suppressed and the arrangement layout of the components is efficient. Therefore, the apparatus main body 10 can be downsized.

  Note that the vibration motor 20 that performs notification by vibration as the LCD 34 as the display unit and the notification unit 90 is not disposed in the device main body 10 of the wearer information measuring device 100, and is a portable type such as a portable information terminal device or a cellular phone. It is also possible to receive information data by wireless communication or wired communication from the device main body, and present or notify it using an image or vibration.

  DESCRIPTION OF SYMBOLS 10 ... Equipment main body, 11 ... Top case, 12 ... Circuit board as a board, 13 ... Bottom case, 14 ... Key, 15 ... Band part, 16 ... Internal space, 17 ... Band mounting part, 18 ... Bezel, 19 ... Glass Plate, 20 ... Vibration motor, 30 ... Display control unit, 32 ... Drive unit, 34 ... LCD as display unit, 40 ... Communication unit, 40 ... Communication unit, 42 ... Balun, 43 ... Antenna, 47 ... Flash memory, 50 ... Barometric pressure sensor, 55 ... Geomagnetic sensor, 60 ... GPS communication unit, 62 ... SAW filter, 63 ... Balun, 64 ... GPS antenna, 65 ... Temperature sensor, 66 ... Acceleration sensor, 70 ... Secondary battery as battery, 71 ... External terminal 72 ... Battery substrate 73 ... SVD circuit 76 ... Charge control circuit 80 ... DCDC converter 90 ... Notification unit 100 ... Electronic device The wearer's information measuring device, 110 ... MCU.

Claims (10)

A geomagnetic sensor,
A vibration motor,
The geomagnetic sensor and the vibration motor are:
An electronic apparatus characterized in that a distance between the geomagnetic sensor and the vibration motor is 10 mm or more and 41 mm × 41 mm × 11 mm. The geomagnetic sensor and the vibration motor are:
2. The electronic device according to claim 1, wherein a distance between the geomagnetic sensor and the vibration motor is 20 mm or more and is disposed within the range of 41 mm × 41 mm × 11 mm. A battery board to which battery terminals are connected;
The battery substrate is
The electronic apparatus according to claim 1, wherein a distance between the geomagnetic sensor and the geomagnetic sensor is 5 mm or more and is disposed within the range of 41 mm × 41 mm × 11 mm. The battery substrate is
The electronic apparatus according to claim 3, wherein a distance from the geomagnetic sensor is 10 mm or more and is disposed within the range of 41 mm × 41 mm × 11 mm. A DC-DC converter,
The DCDC converter is
5. The electronic device according to claim 1, wherein a distance between the geomagnetic sensor and the geomagnetic sensor is 5 mm or more and is disposed within a range of 41 mm × 41 mm × 11 mm. The DCDC converter is
The electronic apparatus according to claim 5, wherein a distance between the geomagnetic sensor and the geomagnetic sensor is 10 mm or more and is disposed within a range of 41 mm × 41 mm × 11 mm. Further comprising a substrate to which the geomagnetic sensor, the battery substrate, the DCDC converter, and the vibration motor are connected;
When the mounting surface of the substrate is viewed in plan from a direction perpendicular to the mounting surface, the battery substrate, the DCDC converter, and the vibration motor with respect to an imaginary line passing through the center of the substrate and along the mounting surface The electronic device according to claim 5, wherein the geomagnetic sensor is disposed in a region on the opposite side. A communication antenna,
The electronic device according to claim 7, wherein the communication antenna is arranged in a region on the same side as the geomagnetic sensor in a region provided by the virtual line. A GPS antenna,
The electronic device according to claim 7, wherein the GPS antenna is arranged in an area on the same side as the geomagnetic sensor in an area provided by the virtual line. An acceleration sensor,
The acceleration sensor is
10. The electronic apparatus according to claim 1, wherein the electronic apparatus is disposed so that a detection axis direction of the acceleration sensor is aligned with a detection axis direction of the geomagnetic sensor. 10.

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