JP2017140439A - Pulse wave measuring module and electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pulse wave measuring module capable of efficiently making incident light of a desired wavelength band, with less noise.SOLUTION: A biological information measuring device 400 functioning as a pulse wave measuring module comprises a light emitting unit 150 for emitting light to a subject and a light receiving unit 140 for receiving reflected light of the subject. The light receiving unit 140 includes a light detecting unit (light receiving element 142) for detecting the reflected light and an optical filter 143 mounted on the light detecting unit (light receiving element 142) and formed by a plurality of layers. A layer farthest from the light detecting unit (light receiving element 142) of the plurality of layers of the optical filter 143 is made from silicon oxide.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a pulse wave measurement module and an electronic apparatus including the pulse wave measurement module.

  2. Description of the Related Art Conventionally, a measuring device that is attached to a wrist or the like by a band or the like and measures biological information such as a pulse wave of a subject, and a wristwatch-like electronic device that has a function of measuring the biological information are known. For example, Patent Document 1 discloses an arm-mounted type equipped with a pulse wave measurement module that is mounted on an arm (wrist) of a subject (subject) and measures biological information such as a pulse wave using an optical pulse wave detection sensor. A measuring device is disclosed.

  Such devices (measuring devices, electronic devices) optically measure blood flow on the surface of the skin, which is the object to be measured, and obtain biological information such as pulse waves by converting it to a signal. The part and its surrounding structure are very important elements for obtaining accurate information. In particular, it is necessary that the light emitted from the light emitting unit is configured not to include a noise component until it is reflected from the living body (for example, the skin surface of the subject) and enters the light receiving unit. In addition, it is necessary to prevent light from the light emitting unit from directly entering the light receiving unit.

  In addition, when such devices (measuring devices, electronic devices) are used for sports-related applications, for example, portable devices are used to prevent the mounted devices from affecting the performance of the subject (subject). Performance, size reduction, and weight reduction are very important aspects. In addition, for example, in the case of use for medical / health use, it is necessary to consider so as not to place a burden on the patient or subject, and portability, size reduction, and weight reduction are very important viewpoints. As described above, devices that are attached to a wrist or the like and obtain biometric information are required to strictly pursue portability, size reduction, and weight reduction.

JP 2000-254105 A

  However, in the arm-mounted measurement device of Patent Document 1, there is no detailed description regarding the light emitting unit, the light receiving unit, and the surrounding configuration, and a configuration that does not include noise as described above, or light in a desired wavelength band. There is no mention of a problem related to the configuration for efficiently making the light incident.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A pulse wave measurement module according to this application example includes a light emitting unit that emits light to a subject, and a light receiving unit that receives reflected light from the subject, and the light receiving unit includes: A light detection unit that detects the reflected light; and an optical filter that is disposed on the light detection unit and includes a plurality of layers, and the light detection among the plurality of layers of the optical filter. The layer farthest from the part is characterized by comprising silicon oxide.

  According to this application example, the layer farthest from the light detection unit of the optical filter constituting the light reception unit of the pulse wave measurement module is formed of a silicon oxide layer. Since the refractive index of silicon oxide is close to the refractive index of the skin of the subject in contact with the silicon oxide layer, the loss of incident light incident on the optical filter is reduced and a large amount of light can be captured. The optical filter makes light of a desired wavelength band out of the captured light incident on the light detection unit, and the light detection unit outputs this as a light reception signal. As a result, the received light signal having a relatively small noise and an improved S / N ratio (signal / noise ratio) can be obtained. Therefore, it is possible to provide a pulse wave measurement module that has low noise and efficiently enters light in a desired wavelength band.

  Application Example 2 In the pulse wave measurement module according to the application example described above, it is preferable that the optical filter includes the layer made of silicon oxide and the layer made of silicon nitride.

  According to this application example, the optical filter of the pulse wave measurement module is formed of the silicon oxide layer and the silicon nitride layer. Using a low-refractive-material silicon oxide layer and a high-refractive-material silicon nitride layer, the reflection and interference at the boundary surface are used to attenuate light in an unnecessary wavelength band that causes noise in pulse wave measurement. be able to.

  Application Example 3 In the pulse wave measurement module according to the application example, in the optical filter, the layer closest to the light detection unit is a layer made of the silicon oxide, and the layer made of the silicon oxide and the silicon nitride It is preferable that the layers made of are alternately laminated.

  According to this application example, in the optical filter of the pulse wave measurement module, silicon oxide layers (oxide layers) and silicon nitride layers (nitride layers) are alternately stacked. Incident light incident on the optical filter is partly transmitted light and partly reflected light at the boundary surface between the oxide layer and the nitride layer. Further, a part of the reflected light is reflected again at the boundary surface and combined with the transmitted light. At this time, the light of the wavelength that matches the optical path length of the reflected light is intensified by the phase of the reflected light and the transmitted light being intensified, and the light of the wavelength that does not match the optical path length of the reflected light is the phase of the reflected light and the transmitted light. Will not match and weaken. As a result, only light in a desired wavelength band can reach the light detection unit. In addition, the silicon oxide layer has good contact with a substrate (for example, a silicon substrate) that is normally used as a base of the light receiving unit, and can suppress a risk that the optical filter is peeled off from the substrate.

  Application Example 4 In the pulse wave measurement module according to the application example described above, it is preferable that the layer thickness of the silicon nitride layer is thinner than the layer thickness of the silicon oxide layer.

  According to this application example, the optical filter of the pulse wave measurement module is configured such that the silicon nitride layer is thinner than the silicon oxide layer. Since the silicon nitride layer is a high refractive material, and the high refractive material has a low light transmittance, the light transmittance in a desired wavelength band is improved by making the silicon nitride layer thinner than the silicon oxide layer. be able to.

  Application Example 5 In the pulse wave measurement module according to the application example described above, it is preferable that the layer thickness of the silicon nitride layer is thicker than the layer thickness of the silicon oxide layer.

  According to this application example, the optical filter of the pulse wave measurement module is configured such that the silicon nitride layer is thicker than the silicon oxide layer. Since the silicon nitride layer has a higher light blocking rate than the silicon oxide layer, the blocking rate of light (noise) in an unnecessary wavelength band can be improved.

  Application Example 6 In the pulse wave measurement module according to the application example described above, it is preferable that the thickness of the optical filter is 0.7 μm or more and 1.0 μm or less.

  According to this application example, since the optical filter of the pulse wave measurement module is formed with a thickness of 0.7 μm or more, the attenuation region characteristic of the optical filter can be improved. Specifically, since the number of optical filters formed by the silicon nitride layer and the silicon oxide layer increases, it is possible to improve the light shielding rate for attenuating light in an unnecessary wavelength band (attenuation region). Conversely, if the thickness of the optical filter exceeds 1.0 μm, the loss of light in the desired wavelength band will increase.

  Application Example 7 In the pulse wave measurement module according to the application example described above, it is preferable that the thickness of the optical filter is 0.1 μm or more and 0.4 μm or less.

  According to this application example, since the optical filter of the pulse wave measurement module is formed with a thickness of 0.4 μm or less, the passband characteristics of the optical filter can be improved. Specifically, since the optical filter formed of the silicon nitride layer and the silicon oxide layer has a small number of layers, loss of light in a desired wavelength band (pass band) can be reduced. On the other hand, when the thickness of the optical filter is less than 0.1 μm, the number of layers of the optical filter is too small and light in an unnecessary wavelength band is not attenuated.

  Application Example 8 In the pulse wave measurement module described in the application example, it is preferable that the light receiving unit is sealed with a transparent resin.

  According to this application example, since the light receiving portion of the pulse wave measurement module is covered with the transparent resin for sealing, the waterproofness and antifouling property of the light receiving portion can be improved. Thereby, stable and accurate measurement of biological information can be performed.

  Application Example 9 In the pulse wave measurement module according to the application example described above, it is preferable that the transparent resin can contact the subject.

  According to this application example, the transparent resin that covers the light receiving unit of the pulse wave measurement module is brought into contact with the skin of the subject to reduce the incidence of external light, and the distance between the light receiving unit and the subject's skin is shortened. . Thereby, the detection accuracy of biological information can be improved.

  Application Example 10 In the pulse wave measurement module according to the application example, the pulse wave measurement module includes a wall portion disposed between the light emitting portion and the light receiving portion, and the wall portion is more than the light emitting portion and the light receiving portion. It is preferable that it protrudes to the subject side.

  According to this application example, since the pulse wave measurement module includes the wall portion protruding from the light emitting portion and the light receiving portion to the subject side between the light emitting portion and the light receiving portion, the pulse wave measuring module directly from the light emitting portion to the light receiving portion. Blocks incident light such as direct light. Thereby, it is possible to prevent the light emitted from the light emitting unit from directly reaching (entering) the light receiving unit.

  Application Example 11 In the pulse wave measurement module according to the application example described above, a frame portion including the wall portion and surrounding the light receiving portion is provided, and an upper end surface of the frame portion is higher than an upper surface of the light receiving portion. Are preferred.

  According to this application example, the pulse wave measurement module includes a frame part that is higher than the upper surface of the light receiving part, and therefore, the frame part and the skin of the subject are in contact with each other, thereby preventing external light from entering. Can do. In addition, the pressure is stabilized by the frame portion, and the contact state between the light receiving portion and the skin of the subject is stabilized during measurement, so that the reflected light can be detected stably. Furthermore, since an optical filter having a silicon oxide layer with a low loss of reflected light as the outermost surface is used, sensitivity is improved and accurate pulse wave measurement can be performed.

  Application Example 12 An electronic device according to this application example is characterized in that the pulse wave measurement module according to any one of the application examples is mounted.

  According to this application example, the electronic device includes the pulse wave measurement module that has low noise and efficiently enters light in a desired wavelength band, and thus provides an electronic device with improved detection accuracy of biological information. can do.

(A) The external view which looked at the outline of the biological information measuring device as electronic equipment concerning Embodiment 1 from the front direction side. (B) The external view seen from the diagonally upward direction side in Fig.1 (a). The external view seen from the side surface direction side in Fig.1 (a). Explanatory drawing which shows the outline about mounting | wearing of a biometric information measuring device and communication with a portable terminal. The functional block diagram of a biological information measuring device. The detailed structural example of the sensor part as a pulse wave measurement module is shown, (a) Top view. (B) Front sectional view. (C) The elements on larger scale (front sectional drawing) of a light-receiving part. The figure which shows the example of a characteristic of an optical filter. The detailed structural example of the sensor part as a pulse wave measurement module which concerns on Embodiment 2 is shown, (a) Top view. (B) Front sectional view. Sectional drawing which shows the heart rate monitoring apparatus as a biological information measuring device of a prior art example. The perspective view which shows the heart rate monitoring apparatus as a biological information measuring device which concerns on Embodiment 3. FIG. The side view which shows the heart rate monitoring apparatus as a biological information measuring device which concerns on Embodiment 4. FIG. FIG. 10 is a perspective view showing a heart rate monitoring device as a biological information measuring device according to a fifth embodiment. Sectional drawing which shows the heart rate monitoring apparatus as a biological information measuring device which concerns on Embodiment 6. FIG. The flowchart of the method of manufacturing a biological information measuring device. The figure which shows the outline of the web page used as the starting point of the health manager in the biological information measuring device which concerns on Embodiment 7. FIG. The figure which shows an example of a nutrition web page. The figure which shows an example of an activity level web page. The figure which shows an example of a mental concentration web page. The figure which shows an example of a sleep web page. The figure which shows an example of a daily activity web page. The figure which shows an example of a health degree web page.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the scale of each layer and each member is different from the actual scale so that each layer and each member can be recognized.

(Embodiment 1)
1. Example of Overall Configuration of Biological Information Measuring Device as Electronic Device FIGS. 1A, 1B, and 2 are schematic external views of the biological information measuring device according to the first embodiment. 1A is a diagram of the biological information measuring device viewed from the front direction side, FIG. 1B is a diagram viewed from the obliquely upward direction side in FIG. 1A, and FIG. It is the figure seen from the direction side.

  As shown in FIG. 1A, FIG. 1B, and FIG. 2, a biological information measuring device 400 as an electronic device has a band part 10 and a case part 30, and a sensor part as a pulse wave measurement module. 40 is installed. The case part 30 is attached to the band part 10. The sensor unit 40 is provided in the case unit 30. The biological information measuring device 400 includes a processing unit 200 as shown in FIG. The processing unit 200 is provided in the case unit 30 and detects a pulse wave as biological information based on a detection signal from the sensor unit 40. In addition, the biological information measuring device 400 of this embodiment is not limited to the configuration of FIG. 1A, FIG. 1B, and FIG. 2, and some of the components may be omitted or may be replaced with other components. Various modifications such as replacement or addition of other components are possible.

  As will be described later with reference to FIG. 5, the sensor unit 40 as a pulse wave measurement module includes a substrate 160, a light emitting unit 150, a light receiving unit 140, a wall unit 70 as a frame, and other members. The A configuration including these can be used as a pulse wave measurement module (not shown). In addition, the other member is a convex portion 52 or the like realized by a translucent member, and the pulse wave measurement module according to the present embodiment includes these, that is, the entire sensor unit 40 corresponds to the pulse wave measurement module. It is also possible to perform modifications such as.

  Returning to FIG. 1 and FIG. The band unit 10 is for wrapping around the wrist of a subject (hereinafter also referred to as a user) and wearing the biological information measuring device 400. The band part 10 has a band hole 12 and a buckle part 14. The buckle portion 14 has a band insertion portion 15 and a projection portion 16. The user inserts one end side of the band unit 10 into the band insertion unit 15 of the buckle unit 14, and inserts the protrusion 16 of the buckle unit 14 into the band hole 12 of the band unit 10, whereby the biological information measuring device 400 is configured. Wear on your wrist. In this case, depending on which band hole 12 the protrusion 16 is inserted into, the magnitude of the pressing (pressing on the wrist surface) of the sensor unit 40 described later is adjusted.

  The case part 30 corresponds to the main body part of the biological information measuring device 400. Various components of the biological information measuring device 400 such as the sensor unit 40 and the processing unit 200 (see FIG. 4) are provided inside the case unit 30. That is, the case part 30 is a housing for housing these components. The case portion 30 includes, for example, a top case 34 located on the opposite side of the wrist and a bottom case 36 located on the wrist side. The case portion 30 may not be separated from the top case 34 and the bottom case 36.

  The case part 30 is provided with a light emitting window part 32. The light emitting window 32 is formed of a light transmissive member. The case unit 30 is provided with a light emitting unit (LED, a light emitting unit for notification different from the light emitting unit 150 of the pulse wave measurement module) mounted on a flexible substrate, and light from the light emitting unit emits light. It is injected to the outside of the case part 30 through the window part 32.

  As shown in FIG. 2, the case portion 30 is provided with a terminal portion 35. When the biological information measuring device 400 is attached to a cradle (not shown), the terminal part of the cradle and the terminal part 35 of the case part 30 are electrically connected. Thereby, the secondary battery (battery) provided in the case part 30 can be charged.

  The sensor unit 40 as a pulse wave measurement module detects biological information such as a pulse wave of a subject. For example, the sensor unit 40 includes a light receiving unit 140 and a light emitting unit 150 as shown in FIGS. In addition, the sensor unit 40 includes a convex portion 52 that comes into contact with the skin surface of the subject and applies pressure. The light emitting unit 150 emits light in a state where the convex portion 52 presses the skin surface in this way, and the light receiving unit 140 receives the light reflected by the subject (blood vessel). Is output to the processing unit 200 as a detection signal. The processing unit 200 detects biological information such as a pulse wave based on the detection signal from the sensor unit 40. Note that the biological information to be detected by the biological information measuring device 400 of the present embodiment is not limited to the pulse wave (pulse rate), and the biological information measuring device 400 uses biological information other than the pulse wave (for example, oxygen in blood). (Saturation degree, body temperature, heart rate, etc.) may be detected.

  FIG. 3 is an explanatory diagram showing an outline of the wearing of the biological information measuring device 400 and the communication with the terminal device 420. As shown in FIG. 3, the user who is the subject wears the biological information measuring device 400 on the wrist 410 like a watch. As shown in FIG. 2, a sensor unit 40 is provided on the subject side surface of the case unit 30. Therefore, when the biological information measuring device 400 is attached, the convex portion 52 of the sensor unit 40 comes into contact with the skin surface of the wrist 410 to apply pressure, and in this state, the light emitting unit 150 of the sensor unit 40 emits light, When the light receiving unit 140 receives the reflected light, biological information such as a pulse wave is detected.

  The biological information measuring device 400 and the terminal device 420 are connected for communication so that data can be exchanged. The terminal device 420 is a portable communication terminal such as a smartphone, a mobile phone, or a future phone. Alternatively, the terminal device 420 may be an information processing terminal such as a tablet computer. As a communication connection between the biological information measuring device 400 and the terminal device 420, for example, short-range wireless communication such as Bluetooth (registered trademark) can be employed. In this way, the biological information measuring device 400 and the terminal device 420 are communicatively connected, so that various information such as the pulse rate and calorie consumption can be displayed on the display unit 430 (LCD or the like) of the terminal device 420. That is, various information obtained based on the detection signal of the sensor unit 40 can be displayed. Note that the calculation processing of information such as the pulse rate and calorie consumption may be executed by the biological information measuring device 400, or at least a part thereof may be executed by the terminal device 420.

  The biological information measuring device 400 is provided with a light emitting window 32, and notifies various kinds of information to the user by light emission (lighting and blinking) of a light emitting body for notification (not shown). For example, when entering the fat burning zone or exiting from the fat burning zone in information such as exercise or calorie consumption, this is notified by light emission of the illuminant through the light emitting window 32. When the terminal device 420 receives a mail or the like, the terminal device 420 notifies the biological information measuring device 400 of it. Then, the light emitting body of the biological information measuring device 400 emits light, so that the user is notified of reception of e-mail or the like.

  As described above, in the example illustrated in FIG. 3, the biological information measuring apparatus 400 is not provided with a display unit such as an LCD, and information that needs to be notified by letters, numbers, or the like is displayed on the display unit 430 of the terminal device 420. Is displayed. As described above, in the example shown in FIG. 3, the living body information measuring apparatus 400 can be downsized by notifying the user of the minimum necessary information by light emission of the light emitter without providing a display unit such as an LCD. Yes. In addition, since the display unit is not provided in the biological information measuring apparatus 400, the beauty of the biological information measuring apparatus 400 can be improved.

  FIG. 4 shows a functional block diagram of the biological information measuring apparatus of the present embodiment. 4 includes a sensor unit 40 as a pulse wave measurement module, a body motion sensor unit 170, a vibration generation unit 180, a processing unit 200, a storage unit 240, a communication unit 250, an antenna 252, and a notification unit 260. including. The biological information measuring apparatus 400 of the present embodiment is not limited to the configuration shown in FIG. 4, and some of the components are omitted, replaced with other components, or other components are added. Various modifications are possible.

  The sensor unit 40 as a pulse wave measurement module detects biological information such as a pulse wave, and includes a light receiving unit 140 and a light emitting unit 150. A pulse wave sensor (photoelectric sensor) is realized by the light receiving unit 140, the light emitting unit 150 and the like. The sensor unit 40 outputs a signal detected by the pulse wave sensor as a pulse wave detection signal.

  The body motion sensor unit 170 outputs a body motion detection signal that is a signal that changes according to body motion, based on sensor information of various sensors. The body motion sensor unit 170 includes, for example, an acceleration sensor 172 as a body motion sensor. The body motion sensor unit 170 may include a pressure sensor, a gyro sensor, or the like as the body motion sensor.

  The processing unit 200 performs various signal processing and control processing using the storage unit 240 as a work area, for example, and can be realized by a processor such as a CPU or a logic circuit such as an ASIC. The processing unit 200 includes a signal processing unit 210, a pulsation information calculation unit 220, and a notification control unit 230.

  The signal processing unit 210 performs various types of signal processing (filter processing and the like). For example, the signal processing unit 210 performs signal processing on a pulse wave detection signal from the sensor unit 40, a body motion detection signal from the body motion sensor unit 170, and the like. Do. For example, the signal processing unit 210 includes a body movement noise reduction unit 212. Based on the body motion detection signal from the body motion sensor unit 170, the body motion noise reduction unit 212 performs a process of reducing (removing) body motion noise that is noise caused by body motion from the pulse wave detection signal. Specifically, for example, noise reduction processing using an adaptive filter or the like is performed.

  The pulsation information calculation unit 220 performs pulsation information calculation processing based on the signal from the signal processing unit 210 and the like. The pulsation information is information such as the pulse rate. Specifically, the pulsation information calculation unit 220 obtains a spectrum by performing frequency analysis processing such as FFT on the pulse wave detection signal after the noise reduction processing in the body motion noise reduction unit 212, and obtains the spectrum. In FIG. 5, processing is performed in which a representative frequency is a heartbeat frequency. A value obtained by multiplying the obtained frequency by 60 is a commonly used pulse rate (heart rate). Note that the pulsation information is not limited to the pulse rate itself, and may be other various information (for example, the frequency or cycle of the heartbeat) representing the pulse rate, for example. Moreover, the information which represents the state of pulsation may be sufficient, for example, it is good also considering the value showing the blood volume itself as pulsation information.

  The notification control unit 230 controls the notification unit 260. The notification unit 260 (notification device) notifies the user of various types of information under the control of the notification control unit 230. As the notification unit 260, for example, a notification light emitter can be used. In this case, the notification control unit 230 controls lighting, blinking, and the like of the light emitter by controlling the current flowing through the LED. Note that the notification unit 260 may be a display unit such as an LCD, a buzzer, or the like.

  The notification control unit 230 controls the vibration generation unit 180. The vibration generator 180 notifies the user of various types of information by vibration. The vibration generator 180 can be realized by a vibration motor (vibrator), for example. For example, the vibration motor generates vibration by rotating an eccentric weight. Specifically, eccentric weights are attached to both ends of the drive shaft (rotor shaft) so that the motor itself swings. The vibration of the vibration generator 180 is controlled by the notification controller 230. The vibration generator 180 is not limited to such a vibration motor, and various modifications can be made. For example, the vibration generating unit 180 may be realized by a piezo element or the like.

  For example, a start-up notification when the power is turned on, a notification of the success of the first pulse wave detection, a warning when a pulse wave cannot be detected continues for a certain period of time, a notification when the fat burning zone moves, In addition, a warning at the time of battery voltage drop, a notification of a wake-up alarm, or a notification such as an email or a phone call from a terminal device such as a smartphone can be performed. These pieces of information may be notified by a notification light emitting unit, or may be notified by both the vibration generating unit 180 and the light emitting unit.

  The communication unit 250 performs communication processing with the external terminal device 420 as described with reference to FIG. For example, the wireless communication processing according to a standard such as Bluetooth is performed. Specifically, the communication unit 250 performs a signal reception process from the antenna 252 and a signal transmission process to the antenna 252. The function of the communication unit 250 can be realized by a logic circuit such as a communication processor or ASIC.

2. Configuration Example of Sensor Unit as Pulse Wave Measurement Module A detailed configuration example of the sensor unit 40 as the pulse wave measurement module will be described with reference to FIGS. 5 and 6. FIG. 5 is a diagram illustrating a configuration example of the sensor unit 40, FIG. 5A is a plan view, FIG. 5B is a front sectional view, and FIG. 5C illustrates the sensor unit 40. It is the elements on larger scale (front sectional drawing) of the light-receiving part 140 to perform. FIG. 6 is a diagram illustrating characteristics of the optical filter 143 provided in the light receiving unit 140 constituting the sensor unit 40.

  First, a configuration example 1 of the sensor unit 40 will be described with reference to FIG. The sensor unit 40 of the configuration example 1 includes a light receiving unit 140, a light emitting unit 150, and a wall unit 70 disposed between the light receiving unit 140 and the light emitting unit 150. The light receiving unit 140 and the light emitting unit 150 are arranged at a predetermined interval and are mounted on a support surface 160a of a substrate 160 (sensor substrate) as a support unit. The light emitting unit 150 emits light to the subject or the like. The light receiving unit 140 receives reflected light from the subject. For example, when the light emitting unit 150 emits light and the light is reflected by a subject (for example, a blood vessel), the light receiving unit 140 receives and detects the reflected light.

  The light emitting unit 150 can be realized by a light emitting element such as an LED. A dome-shaped lens 151 (a condensing lens in a broad sense) provided as a condensing member provided in the light emitting unit 150 is an LED chip (in a broad sense, sealed with a resin (sealed with a light transmitting resin)). It is a lens for condensing light from the light emitting element chip). That is, in the surface-mounted light emitting unit 150, the LED chip is disposed below the dome-shaped lens 151, and the light from the LED chip is condensed by the dome-shaped lens 151 and emitted to the subject. Thereby, since the intensity of the light irradiated to the subject can be increased, the optical efficiency of the pulse wave measurement module (sensor unit 40) can be improved, and more accurate measurement can be performed.

  The light receiving unit 140 includes a light receiving element 142 as a light detecting unit that detects reflected light, and an optical filter 143 that is disposed on the light receiving element 142 and includes a plurality of layers. The light receiving element 142 that detects the reflected light can be realized by a photodiode or the like, for example. The optical filter 143 is a wavelength limiting filter (optical filter layer) that limits the wavelength of light incident on the light receiving element 142. The light receiving unit 140 is sealed with a transparent resin 135. Silicone or epoxy is used as the resin material, and it is formed by potting or the like. Thereby, the waterproof property and antifouling property of the light-receiving part 140 are improved. Further, when the biological information measuring device 400 is attached to the wrist of the subject (user), the transparent resin 135 is formed so that the surface opposite to the light receiving unit 140 can come into contact with the user's skin. The transparent resin 135 that covers the light receiving unit 140 is brought into contact with the user's skin to reduce the incidence of external light, and the distance between the light receiving unit 140 and the user's skin is shortened. Thereby, the detection accuracy of biological information can be improved.

  A light receiving element (hereinafter also referred to as a photodiode) 142 is formed as a photodiode 142 on a semiconductor substrate 141. The photodiode 142 becomes an impurity region by ion implantation or the like. For example, the photodiode 142 is realized by a PN junction between an N-type impurity region formed on the P substrate and the P substrate. Alternatively, it is realized by a PN junction between a P-type impurity region formed on a deep N well (N-type impurity region) and the deep N well.

The optical filter 143 is also called an optical bandpass filter, and is configured by a plurality of layers (laminated films) on the upper side of the photodiode 142 formed on the semiconductor substrate 141. The laminated film of the optical filter 143 is formed of a layer made of silicon oxide as a low refractive material and a layer made of silicon nitride as a high refractive material. Specifically, in the optical filter 143, the layer closest to the photodiode 142 as the light detection unit is a layer made of silicon oxide, and layers made of silicon oxide and layers made of silicon nitride are alternately stacked. Specifically, the first layer is a silicon oxide (SiO ₂ ) layer 144 and the second layer is a silicon nitride (Si ₃ N ₄ ) layer 145 from the light detection unit side (photodiode 142 side). Thereafter, the lamination is repeated alternately in this order. Of the plurality of layers of the optical filter 143, the layer (the uppermost layer) farthest from the photodiode 142 as the light detection unit is formed of a silicon oxide layer 148 made of silicon oxide.

  The optical filter 143 utilizes light (noise) in an unnecessary wavelength band that is incident on the photodiode 142 by using reflection and interference at the interface between the silicon oxide layers 144, 146, 148 and the silicon nitride layers 145, 147. Can be attenuated. For example, when the light incident on the optical filter 143 reaches the boundary surface between the silicon oxide layer 146 and the silicon nitride layer 147, a part of the light becomes transmitted light and a part becomes reflected light. Part of the reflected light is reflected again at the interface between the silicon nitride layer 147 and the silicon oxide layer 148 and is combined with the transmitted light. At this time, the light of the wavelength that matches the optical path length of the reflected light is intensified by the phase of the reflected light and the transmitted light being intensified, and the light of the wavelength that does not match the optical path length of the reflected light is the phase of the reflected light and the transmitted light. Will not match and weaken each other. As a result, light in a desired wavelength band can reach the photodiode 142 of the light receiving unit 140.

  The refractive index of the silicon oxide layer formed on the uppermost layer of the optical filter 143 is approximately 1.48, and the refractive index of the skin of the subject in contact with the silicon oxide layer 148 is close to 1.55. Loss (reflection) of incident light incident on 143 is reduced and a large amount of light can be captured. The optical filter 143 makes light of a desired wavelength band out of the captured light incident on the photodiode 142, and the photodiode 142 outputs this as a light reception signal. As a result, the received light signal having a relatively small noise and an improved S / N ratio (signal / noise ratio) can be obtained.

  In addition, as described above, by forming the first layer of the optical filter 143 with a silicon oxide layer, it has good adhesion to a semiconductor substrate (for example, a silicon substrate) 141 that is normally used as the base of the light receiving unit 140. Further, it is possible to suppress a risk that the optical filter 143 is peeled off from the semiconductor substrate 141.

Here, with reference to the graph shown in FIG. 6, characteristic examples (two samples) of the optical filter will be described. FIG. 6 shows the characteristics of an optical filter composed of five layers as an example of this embodiment. The horizontal axis shows the wavelength (nm) of light, and the vertical axis shows the measured value of the light shielding rate at each wavelength.
As shown in FIG. 6, the desired wavelength band (transmission band) of the optical filter 143 is approximately 500 nm to 600 nm, and the unnecessary wavelength band (light-shielding band) that causes noise in pulse wave measurement is approximately 300 to 500 nm. It is approximately 600 to 1000 nm. In the case of an optical filter composed of five layers, the light blocking ratio of light in the light blocking band is approximately 80%, and the light blocking ratio (loss) of light in the transmission band is approximately 15%. FIG. 6 shows the characteristics of a five-layer optical filter as an example of this embodiment. However, by increasing the number of optical filter layers, the light blocking ratio of the light in the light blocking band is increased, and the light transmittance of the transmission band is increased. Becomes smaller. By reducing the number of layers of the optical filter, the light shielding rate of the light in the light shielding band is reduced, and the light transmittance of the transmission band is increased.

Returning to FIG. 5, the description of the structure of the optical filter 143 is continued.
The thickness Hf of the optical filter 143 configured by a plurality of layers is configured to be 0.7 μm or more and 1.0 μm or less. In the optical filter 143, since the silicon oxide layer and the silicon nitride layer are alternately laminated, the number of optical filters can be increased by setting the thickness Hf of the optical filter 143 to 0.7 μm or more. Thereby, the light blocking rate of light in the light blocking band can be improved. If the thickness Hf of the optical filter 143 exceeds 1.0 μm, the loss of light in the transmission band increases and the S / N ratio deteriorates.

  The thickness Hf of the optical filter 143 composed of a plurality of layers may be configured to be 0.1 μm or more and 0.4 μm or less. By setting the thickness Hf of the optical filter 143 to 0.4 μm or less, the number of layers of the optical filter is reduced, so that the light transmittance in the transmission band can be improved. When the thickness Hf of the optical filter 143 is less than 0.1 μm, the light shielding rate of light in the light shielding band is reduced, and the S / N ratio is deteriorated.

  In the optical filter 143 in which the silicon oxide layers and the silicon nitride layers are alternately laminated, the layer thickness Hn of the silicon nitride layer is configured to be thinner than the layer thickness Ho of the silicon oxide layer. Since the silicon nitride layer as the high refractive material has a low light transmittance, the light transmittance in the transmission band can be improved by making the silicon nitride layer thinner than the silicon oxide layer.

  In the optical filter 143 in which the silicon oxide layers and the silicon nitride layers are alternately stacked, the layer thickness Hn of the silicon nitride layer may be a layer thicker than the layer thickness Ho of the silicon oxide layer. Since the silicon nitride layer as the high refractive material has a high light blocking rate, the light blocking rate of the light in the light blocking band can be improved by making the silicon nitride layer thicker than the silicon oxide layer.

  Taking the pulsometer as an example of the biological information measuring apparatus 400, the light emitted from the light emitting unit 150 travels inside the subject, which is the object, and diffuses or scatters in the epidermis, dermis, subcutaneous tissue, and the like. Thereafter, this light reaches the blood vessel (detected site) and is reflected. At this time, part of the light is absorbed by the blood vessels. Then, the light absorption rate in the blood vessel changes due to the influence of the pulse, and the amount of reflected light also changes. Therefore, the light receiving unit 140 receives this reflected light and detects the change in the amount of light, thereby detecting biological information. It becomes possible to detect the pulse rate and the like.

  In such a biological information measuring apparatus 400, blood flow on the skin surface is optically measured and converted into a signal to obtain biological information such as a pulse wave and a pulse. Therefore, in order to improve the accuracy and portability of the measurement, noise components such as disturbance light in the optical path from the light emitting unit 150 to the light receiving unit 140 are reduced, or the light is directly incident on the light receiving unit 140 from the light emitting unit 150. It is important to reduce light (direct light, etc.). The inventors have found that it is effective to provide a wall portion 70 as a light shielding portion described below from such a viewpoint.

  The wall portion 70 is mounted on the support surface 160 a of the substrate 160 between the light receiving portion 140 and the light emitting portion 150. The wall portion 70 is provided in a wall shape extending in the Y-axis direction along each outer periphery where the light receiving portion 140 and the light emitting portion 150 face each other, and its top surface (upper surface) is more than that of the light emitting portion 150 and the light receiving portion 140. Projects to the subject side. The wall portion 70 is in contact with a subject, for example, the skin of the subject, on the upper surface, and forms a desired space on the upper surface of the light receiving unit 140 and the light emitting unit 150. Further, the wall 70 blocks light such as direct light directly incident on the light receiving unit 140 from the light emitting unit 150 and light such as disturbance light that becomes a noise component incident on the light receiving unit 140, for example. Thus, by providing the wall part 70, the light inject | emitted from the light emission part 150 can prevent reaching the light-receiving part 140 directly (entering).

  In the first configuration example, the wall portion 70 is described as having a wall-like configuration extending between the light receiving portion 140 and the light emitting portion 150 and extending in the Y-axis direction, but is not limited thereto. For example, as in Embodiment 5 to be described later, a frame portion surrounding the light receiving portion or the light emitting portion in a frame shape may be used. Even with such a configuration, the same effects as described above can be obtained.

  A connection terminal 274 that is electrically connected to a control unit (not shown) is provided on a support surface 160a of a substrate 160 (sensor substrate) as a support unit. The connection terminal 274 is a terminal for establishing an electrical connection, and can be formed by applying gold (Au) plating to a metal layer, for example, a copper (Cu) layer. By providing such a connection terminal 274 on the substrate 160, it is possible to connect the support portion and, for example, the control portion etc. in a compact manner.

As described above, according to the pulse wave measurement module and the electronic apparatus according to the present embodiment, the following effects can be obtained.
Since the uppermost layer of the optical filter 143 configured in the light receiving unit 140 is formed of the silicon oxide layer 148 having a refractive index close to the skin of the subject, the loss (reflection) of incident light incident on the optical filter 143 is reduced. Can capture a lot of light. As a result, the received light signal having a relatively small noise and an improved S / N ratio (signal / noise ratio) can be obtained. Therefore, there are provided a pulse wave measurement module (sensor unit 40) that efficiently enters light in a desired wavelength band with less noise, and an electronic device (biological information measurement device 400) on which the pulse wave measurement module is mounted. be able to.

In addition, since the optical filter 143 is alternately formed from the photodiode 142 side in the order of a silicon oxide layer that is a low refractive material and a silicon nitride layer that is a high refractive material, light in a desired wavelength band is detected by a light detection unit. Can be reached. In addition, since the silicon oxide layer 144 has good adhesion to the semiconductor substrate 41, the risk of the optical filter 143 peeling off from the semiconductor substrate 41 can be suppressed.
Further, when the thickness Hf of the optical filter 143 is 0.7 μm or more and 1.0 μm or less, it is possible to improve the light blocking rate of light in the light blocking band that becomes noise in pulse wave measurement. On the contrary, when the thickness Hf of the optical filter 143 is 0.1 μm or more and 0.4 μm or less, it is possible to improve the transmittance of light in the transmission band which is a desired wavelength band.
Further, when the layer thickness Hn of the silicon nitride layer is formed as a layer thinner than the layer thickness Ho of the silicon oxide layer, it is possible to improve the light transmittance in the transmission band which is a desired wavelength band. On the contrary, when the thickness Hn of the silicon nitride layer is formed as a layer thicker than the layer thickness Ho of the silicon oxide layer, the light shielding rate of light in the light shielding band that becomes noise can be improved.

(Embodiment 2)
Next, Embodiment 2 of the present invention will be described with reference to the drawings.
In addition, about the component same as Embodiment 1, the same number is used and the overlapping description is abbreviate | omitted. The biological information measuring device as the electronic apparatus according to the present embodiment is different from the first embodiment in the configuration of the sensor unit as the pulse wave measurement module.

  FIG. 7 is a diagram illustrating a configuration example of the sensor unit 40a, FIG. 7A is a plan view, and FIG. 7B is a front sectional view. A configuration example 2 of the sensor unit 40a will be described with reference to FIG. The sensor unit 40 a of Configuration Example 2 includes a light receiving unit 140, a light emitting unit 150, and a wall unit 70 disposed between the light receiving unit 140 and the light emitting unit 150. In the present embodiment, a configuration in which a condensing lens is not used in the light emitting unit 150 is shown.

  The outer periphery of the light receiving unit 140 is surrounded by a transparent resin 135a. Specifically, the transparent resin 135a covers the side surfaces of the semiconductor substrate 141 and the optical filter 143, and the upper surface of the optical filter 143 (the surface on which the optical filter is incident) is not covered with the transparent resin 135a. As a result, the optical filter 143 and the skin of the subject (user) are in close contact with each other without the transparent resin, so that optical loss can be suppressed. The boundary side surface between the semiconductor substrate 141 and the optical filter 143 and the boundary side surface of each layer of the optical filter 143 configured by a plurality of layers are covered with the transparent resin 135a, so that intrusion of moisture and the like from the boundary side surface is prevented. Thus, the reliability of the pulse wave measurement module and the electronic device including the pulse wave measurement module is improved.

(Embodiment 3)
Next, Embodiment 3 of the present invention will be described with reference to the drawings.
The biological information measuring apparatus as the electronic apparatus according to the third embodiment is mounted on a living body (for example, a human body) whose biological information is measured, and measures biological information such as a pulse (heart rate), as in the first embodiment. It is a heart rate monitoring device. In each figure shown below, the size and ratio of each component may be described differently from the actual component in order to make each component large enough to be recognized on the drawing. is there. Also in the following third to sixth embodiments, the structure of the pulse wave measurement module described in the first embodiment, such as the structure of the optical filter 143, can be similarly applied.

  First, before describing the heart rate monitoring device 1010 as the electronic apparatus (biological information measurement device) according to the third embodiment, a conventional heart rate monitoring device as the biological information measurement device according to the third embodiment will be described with reference to FIG. An example will be described.

  FIG. 8 shows a conventional biological information measuring device for measuring physiological parameters (biological information) of a user (subject) 1000 (showing the user's arm in the figure) wearing a heart rate monitoring device. It is sectional drawing which shows the heart rate monitoring apparatus 1010 of. The heart rate monitoring apparatus 1010 includes a sensor 1012 that measures a heart rate as at least one physiological parameter of the user 1000 and a case 1014 that houses the sensor 1012. The heart rate monitoring device 1010 is worn on the arm 1001 of the user 1000 by a fixing unit 1016 (for example, a band).

  This sensor 1012 includes a light emitting element 1121 as a light emitting unit and a light receiving element 1122 as a light receiving unit, which are two sensor elements, and is a heart rate monitoring sensor for measuring or monitoring a heart rate. However, it may be a sensor that measures one or more physiological parameters (eg, heart rate, blood pressure, expiratory volume, skin conductivity, skin humidity, etc.). Further, when the case 1014 includes a band-type housing, the case 1014 can be used as a watch-type monitoring device used in sports, for example. It should be noted that the shape of the case 1014 only needs to be able to hold the sensor 1012 in a desired position mainly with respect to the user 1000, and optionally accommodate additional elements such as batteries, processing units, displays, user interfaces, etc It may be possible.

  The biological information measuring device of the conventional example is a heart rate monitoring device 1010 for monitoring a user's heart rate. The sensor 1012 is an optical sensor including a light emitting element 1121 and a light receiving element 1122. An optical heart rate monitor using an optical sensor relies on a light emitting element 1121 (usually an LED is used) as a light source that shines light on the skin. A part of the light emitted to the skin from the light emitting element 1121 is absorbed by the blood flowing through the blood vessel under the skin, but the remaining light is reflected and exits the skin. The reflected light is captured by the light receiving element 1122 (usually a photodiode is used). The light reception signal from the light receiving element 1122 is a signal including information corresponding to the amount of blood flowing through the blood vessel. The amount of blood flowing through the blood vessels changes depending on the pulsation of the heart. Thus, the signal on the light receiving element 1122 changes in response to the heartbeat. That is, the change in the signal of the light receiving element 1122 corresponds to a pulse of the heart rate. Then, by counting the number of pulses per unit time (for example, per 10 seconds), the number of beats of the heart per minute (ie, heart rate) can be obtained.

  Hereinafter, a heart rate monitoring apparatus 1020 as an electronic apparatus (biological information measurement apparatus) according to Embodiment 3 will be described with reference to FIG. FIG. 9 is a perspective view showing a heart rate monitoring device as a biological information measuring device according to the third embodiment. Although not shown in FIG. 9, the heart rate monitoring device 1020 as the biological information measuring device according to the third embodiment is attached to the user's arm by a fixing unit such as a band as in the first embodiment. .

  A heart rate monitoring device 1020 as a biological information measuring device according to the third embodiment includes a plurality of (in this example, two) light emitting elements 1221 and 1223 as light emitting units and a light receiving element 1222 as one light receiving unit. They are arranged in a line. Specifically, a sensor 1022 including at least two sensor elements (in this example, as three sensor elements, two light emitting elements 1221 and 1223 serving as a first light emitting unit and a second light emitting unit, and a light receiving unit) And a light receiving element 1222 as the above. Although not shown, a wall portion 70 (see FIG. 5) having the same configuration as the above-described configuration example is provided between the light receiving element 1222 and the light emitting element 1221 and between the light receiving element 1222 and the light emitting element 1223. It is desirable.

  And the light receiving element 1222 as a light-receiving part is arrange | positioned between the two light emitting elements 1221 and 1223 as a 1st light-emitting part and a 2nd light-emitting part. Further, the two light emitting elements 1221 and 1223 as the first light emitting part and the second light emitting part are arranged at positions symmetrical with respect to an imaginary line passing through the center of the light receiving element 1222 as the light receiving part. By arranging the light emitting elements 1221 and 1223 and the light receiving element 1222 in such a manner, dead space is reduced and space saving can be achieved. Moreover, the light which combined the 1st light emission part and 2nd light emission part in a line symmetrical position gathers in a light-receiving part, and can perform more exact detection.

  The sensor element detects a sensor signal. The sensor 1022 includes an optical sensor composed of light emitting elements 1221 and 1223 using two LEDs for emitting light to the user's skin, and at least one light receiving element 1222 (photodiode for receiving light reflected from the skin). ). Furthermore, the heart rate monitoring device 1020 has a case or a housing (not shown). The case or the housing may be similar to or the same as the case 1014 shown in FIG. 8, or may be similar to or the same as the case portion 30 in the first embodiment.

  The sensor 1022 is carried on one surface of a carrier (substrate) 1026. Here, a configuration including a carrier (substrate) 1026 and a sensor 1022 carried on the carrier (substrate) 1026 corresponds to the pulse wave measurement module. The same applies to the following fourth to sixth embodiments. Light emitted from the light emitting elements 1221 and 1223 is reflected without being absorbed by the skin or the like, and can reach the light receiving element 1222 directly. In the heart rate monitoring device 1020, the distance between the carrier 1026 and the upper surfaces 1221a and 1223a of the light emitting elements 1221 and 1223 is smaller than the distance between the carrier 1026 and the upper surface 1222a of the light receiving element 1222. That is, the difference between the distance between the carrier 1026 and the upper surfaces 1221a and 1223a of the light emitting elements 1221 and 1223 and the distance between the carrier 1026 and the upper surface 1222a of the light receiving element 1222 is Δh. The light receiving element 1222 receives light from the upper surface 1222a which is the uppermost surface layer. According to these configurations, most of the light emitted from the light emitting elements 1221 and 1223 is directed to the skin, and the reflected light is directly incident on the light receiving element 1222 without intervention such as an air layer. In other words, since the light receiving element 1222 is in contact with the skin, a structure in which a gap is not easily generated between the upper surface (light receiving surface) 1222a of the light receiving element 1222 and the skin can be obtained. Light that becomes a noise source can be prevented from entering the upper surface 1222a. Further, light from the light emitting elements 1221 and 1223 that does not pass through the skin, for example, light that is directly incident on the light receiving element 1222 from the light emitting elements 1221 and 1223 cannot reach the upper surface 1222a of the light receiving element 1222.

(Embodiment 4)
Next, a heart rate monitoring apparatus 1030 as an electronic apparatus (biological information measurement apparatus) according to Embodiment 4 will be described with reference to FIG. FIG. 10 is a side view showing a heart rate monitoring device as a biological information measuring device according to the fourth embodiment. The heart rate monitoring apparatus 1030 as the biological information measuring apparatus according to the fourth embodiment is not shown in FIG. 10, but is attached to the user's arm by a fixing unit such as a band as in the first embodiment. Is done.

  As shown in FIG. 10, the electrical connection terminals 1034 of the light emitting elements 1221 and 1223 as light emitting parts and the light receiving element 1222 as a light receiving part are made of an insulating material (for example, epoxy resin) 1032 for protection of electrical elements. Should preferably be covered. Further, the insulating material 1032 can be configured not to cover the light emitting elements 1221 and 1223 and the light receiving element 1222. Specifically, a region between the light-emitting element 1221 and the light-receiving element 1222 and a region between the light-emitting element 1223 and the light-receiving element 1222 can be filled with an insulating material 1032. In other words, at least the upper surface 1222a of the light receiving element 1222 and the upper surfaces 1221a and 1223a of the light emitting elements 1221 and 1223 can be configured not to be covered with the insulating material 1032. By comprising in this way, the interference by the air gap between skin and the light emitting elements 1221 and 1223 can be suppressed. Furthermore, the insulating material 1032 may be configured to cover the upper surfaces 1221a and 1223a of the light emitting elements 1221 and 1223 and the upper surface 1222a of the light receiving element 1222. With this configuration, the upper surface 1222a of the light receiving element 1222 that comes into contact with the skin and the upper surfaces 1221a and 1223a of the light emitting elements 1221 and 1223 can be protected, so the upper surface 1222a of the light receiving element 1222 and the light emitting element 1221 Damage to the top surfaces 1221a and 1223a of 1223 can be prevented. In this case, the insulating material 1032 can also be regarded as a protective film.

  In the heart rate monitoring apparatus 1030 as the biological information measuring apparatus according to the fourth embodiment, an insulating material 1032 using an epoxy resin is provided as an example that is generally possible. In FIG. 10, the insulating material 1032 is disposed without covering the upper surfaces 1221 a and 1223 a of the light emitting elements 1221 and 1223, and protects the electrical connection terminal 1034. Light emitted from the light emitting elements 1221 and 1223 is represented by arrows.

  In this way, the insulating material 1032 is placed with the minimum amount that does not interfere with the correct function of the heart rate monitoring device 1030, thereby protecting the electrical connection terminals 1034 of the light emitting elements 1221 and 1223 and the light receiving element 1222. Thus, the heart rate monitoring device 1030 can be further improved. Although not shown, a wall portion 70 (see FIG. 5) similar to the above-described configuration example is provided between the light receiving element 1222 and the light emitting element 1221 and between the light receiving element 1222 and the light emitting element 1223. Is more preferred.

  It is more preferable to use a heart rate monitoring apparatus 1040 as a biological information measuring apparatus according to the fifth embodiment as shown in FIG. 11 instead of the configuration in which the epoxy resin is injected in the fourth embodiment.

(Embodiment 5)
Next, a heart rate monitoring device 1040 as an electronic apparatus (biological information measurement device) according to Embodiment 5 will be described with reference to FIG. FIG. 11 is a perspective view showing a heart rate monitoring device as a biological information measuring device according to the fifth embodiment. Although the heart rate monitoring device 1040 as the biological information measuring device according to the fifth embodiment is not shown in FIG. 11, it is attached to the user's arm by a fixing unit such as a band as in the first embodiment. Is done.

  A heart rate monitoring apparatus 1040 as a biological information measuring apparatus according to Embodiment 5 includes a frame unit 1042 that surrounds the light receiving unit in a frame shape. Specifically, in the heart rate monitoring device 1040, the created frame portions 1041, 1042, and 1043 are arranged. The frame portion 1042 is disposed around the light receiving element 1222 as the light receiving portion, and the frame portions 1041 and 1043 are disposed around the light emitting elements 1221 and 1223 as the light emitting portions, and the frame portions 1041, 1042, and 1043 and the light emitting elements 1221 and 1223 are disposed. Further, a gap 1036 between the light receiving element 1222 and the light receiving element 1222 is formed. Then, an insulating material (not shown in FIG. 11) is injected using the frame portions 1041, 1042, and 1043 as a guide, and covers the electrical connection terminals 1034 of the light emitting elements 1221, 1223 and the light receiving element 1222.

  In the example shown in Embodiment 5, the light emitting elements 1221 and 1223 and the light receiving element 1222 are surrounded by the individual frame portions 1041, 1042, and 1043. As another example, all the frame parts 1041, 1042, and 1043 may be coupled to each other, or all the sensor elements may be surrounded by an integral frame part. Note that the frame portions 1041, 1042, and 1043 can be used as a light shielding wall (wall portion) as an example of a light shielding portion. By using the frame portions 1041, 1042, and 1043 as light shielding walls (wall portions), light emitted from the light emitting elements 1221 and 1223 can be prevented from entering the light receiving element 1222 directly.

As an improvement in order not to affect the function of the heart rate monitoring device 1040, the upper edges 1041a and 1043a of the frame portions 1041 and 1043 around the light emitting elements 1221 and 1223 are preferably upper surfaces 1221a and 1041a of the light emitting elements 1221 and 1223, respectively. Preferably it is lower than 1223a. In other words, the distance hFR-LED between the upper edges 1041a and 1043a of the individual frame portions 1041 and 1043 and the carrier 1026 is the upper surface 1221a and 1223a of the light emitting elements 1221 and 1223 surrounded by the individual frame portions 1041 and 1043. And the distance hLED between the carrier 1026 and the carrier 1026 are the same or smaller (hFR-LED ≦ hLED).
Preferably, the difference between the distance hLED between the upper surfaces 1221a and 1223a of the light emitting elements 1221 and 1223 and the carrier 1026 and the distance hFR-LED between the upper edges 1041a and 1043a of the frame parts 1041 and 1043 and the carrier 1026 is 0.1 mm. To 0.8 mm. More preferably, the difference between the distance hLED between the upper surfaces 1221a and 1223a of the light emitting elements 1221 and 1223 and the carrier 1026 and the distance hFR-LED between the upper edges 1041a and 1043a of the frame portions 1041 and 1043 and the carrier 1026 is: Set in the range of 0.2 mm to 0.5 mm.

The upper edge 1042a of the frame portion 1042 is preferably higher than the upper surface 1222a of the light receiving element 1222 as a light receiving portion. In other words, the distance hFR-PD between the upper edge 1042a of the frame portion 1042 and the carrier 1026 is larger than the distance hPD between the upper surface 1222a of the light receiving element 1222 surrounded by the frame portion 1042 and the carrier 1026 (hFR-PD> hPD).
Preferably, the difference between the distance hPD between the upper surface 1222a of the light receiving element 1222 and the carrier 1026 and the distance hFR-PD between the upper edge 1042a of the frame portion 1042 and the carrier 1026 is set in the range of 0 mm to 0.5 mm. More preferably, the difference between the distance hPD between the upper surface 1222a of the light receiving element 1222 and the carrier 1026 and the distance hFR-PD between the upper edge 1042a of the frame portion 1042 and the carrier 1026 is in the range of 0.1 mm to 0.2 mm. Set to. Thereby, the upper edge 1042a of the frame portion 1042 and the skin of the subject come into contact with each other, so that the incidence of external light can be prevented. Further, the pressure is stabilized by the frame portion 1042, and the contact state between the light receiving element 1222 and the skin of the subject is stabilized at the time of measurement, so that the reflected light can be detected stably.
Further, the distance hFR-PD between the upper edge 1042a of the frame portion 1042 and the carrier 1026 is larger than the distance hLED between the upper surfaces 1221a and 1223a of the light emitting elements 1221 and 1223 and the carrier 1026 (hFR-PD> hLED).

For example, when the light receiving element 1222 and the light emitting elements 1221 and 1223 are close to each other, there may be a configuration in which only one frame wall exists between the light receiving element 1222 and the light emitting elements 1221 and 1223. This may occur for reasons of manufacturability. When the single frame wall is a case, the frame walls of both frames coincide with each other in the light receiving element 1222 and the light emitting elements 1221 and 1223. This means that the frame walls of the light emitting elements 1221 and 1223 are higher. Specifically, the frame wall on the side where the light receiving element 1222 is located in the frame portions 1041 and 1043 surrounding the light emitting elements 1221 and 1223 is the same. The other frame walls become lower than the upper surfaces 1221a and 1223a of the light emitting elements 1221 and 1223.
Further, instead of the frame portions 1041, 1042, and 1043, a first wall portion is provided between the light receiving element 1222 and the light emitting element 1221 or the light emitting element 1223, and the outside of the light emitting elements 1221 and 1223, that is, on the light receiving element 1222 is provided. On the other hand, you may comprise so that a 2nd wall part may be provided in the opposite side to a 1st wall part.
When configured in this manner, the distance between the carrier 1026 and the upper surface of the first wall portion may be configured to be larger than the distance between the carrier 1026 and the upper surface of the second wall portion. With this configuration, the function of the frame can be realized with fewer members than in the case where the light emitting element and the light receiving element are surrounded as shown in FIG.

  Note that by using the frame portions 1041 and 1043 and the frame portion 1042 as in the fifth embodiment, it is possible to prevent an insulating material such as an injected epoxy resin from flowing out. In addition, creating an additional structure and separating an insulating material such as an epoxy resin in this way is an option that enables high mass productivity. Note that the frame portions 1041 and 1043 and the frame portion 1042 may be made of the same material as the carrier 1026. For example, the frame may be formed by injection molding using an epoxy resin or a polycarbonate resin.

  As described above, the insulating material 1032 (see FIG. 10) protects the electrical connection terminals 1034 of the sensor elements (the light emitting elements 1221 and 1223 and the light receiving element 1222). However, these electrical connection terminals 1034 must make further contact with other components, such as additional electronics (eg, drivers, detection electronics, processors or power supplies). This means that the carrier 1026 (which may be a printed circuit board (PCB)) has some electrical connection with these additional electronic devices. Further, the structure of the heart rate monitoring device according to the present embodiment can be applied not only to the heart rate but also to a pulse wave and pulse measuring device.

(Embodiment 6)
With reference to FIG. 12, a heart rate monitoring apparatus 1050 as a biological information measuring apparatus according to Embodiment 6 will be described. FIG. 12 is a cross-sectional view showing a heart rate monitoring device as a biological information measuring device according to a sixth embodiment. The heart rate monitoring device 1050 as the biological information measuring device according to the sixth embodiment is not shown in FIG. 12, but is attached to the user's arm by a fixing unit such as a band as in the first embodiment. Is done.

  A heart rate monitoring device 1050 as a biological information measuring device according to Embodiment 6 includes the above-described additional electronic devices (for example, a processor 1052 and a driver 1054). External electrical connection terminals (not shown) are not arranged on the same carrier 1026 as the sensor elements (the light emitting element 1221 as the light emitting part and the light receiving element 1222 as the light receiving part). In other words, the additional electronic device is arranged on a carrier or substrate different from the sensor element. With this configuration, necessary additional electronic devices can be mounted on the heart rate monitoring device 1050 while maintaining good contact between the skin and the sensor elements (the light emitting element 1221 and the light receiving element 1222). For example, the external electrical connection terminal can be disposed on the side surface of the carrier 1026.

  As described above, different types of sensors can be used in the biological information measuring device according to the present invention. For example, when the above-described light receiving element 1222 is an electric sensor, two skin conductance electrodes (for example, the sensor element (the light emission shown in FIG. 9) for contacting the user's skin and measuring the user's conductivity are used. The element 1221 and the light receiving element 1222)) are covered with skin. Further, two or more types of sensors can be used in this type of biological information measuring apparatus, and the number of sensor elements is not limited.

In Embodiment 3-6, the flowchart of the method of manufacturing the biometric information measuring apparatus which measures the physiological parameter proposed is shown in FIG.
In the first step S 1, a sensor 1022 including at least two sensor elements (a light emitting element 1221 and a light receiving element 1222) for detecting a sensor signal is disposed on a carrier 1026. In the second step S2, electrical contact of the sensor element is formed on the carrier 1026. In the third step S3, the one or more frame portions 1041 and 1042 are formed on the carrier 1026 around the sensor 1022 and / or individual sensor elements (the light emitting element 1221 and the light receiving element 1222). In the fourth step S4, the insulating material 1032 is not covered with the upper surfaces 1221a and 1222a of the sensor elements (the light emitting element 1221 and the light receiving element 1222) provided in the carrier 1026 and is surrounded by the frame portions 1041 and 1042. Injected and filled.

  According to the third to sixth embodiments, a method for achieving protection of electrical contact without negatively affecting the performance of the biological information measuring device is proposed. And it forms by the method which maintains the performance of a sensor. For example, at least one of the frame portions 1041 and 1043 prevents the position of the sensor with respect to the skin from shifting. Further, at least one of the frame portions 1041 and 1043 can help to prevent the emitted direct light from entering the light receiving element 1222. Preferably, the height of the frame portions 1041 and 1043 around the light emitting elements 1221 and 1223 on the side facing the light receiving element 1222 should be smaller than the height of the upper surfaces 1221a and 1223a of the light emitting elements 1221 and 1223. . In addition, the frame portion 1042 around the light receiving element 1222 may be higher than the upper surface 1222a of the light receiving element 1222.

Also in the electronic apparatus (biological information measurement device) according to the third to sixth embodiments described above, the same effect as that of the first embodiment is obtained by mounting the sensor unit 40 as the pulse wave measurement module described in the first embodiment. be able to.
Further, according to the electronic device according to the fifth embodiment, the heart rate monitoring device 1040 as the electronic device includes the frame portion 1042 that surrounds the light receiving element 1222 as the light receiving portion in a frame shape, and the upper edge 1042a of the frame portion 1042 is Since it is higher than the upper surface 1222a of the light receiving element 1222 as the light receiving unit, the upper edge 1042a of the frame unit 1042 and the skin of the subject come into contact with each other, so that the incidence of external light can be prevented. Further, the pressure is stabilized by the frame portion 1042, and the contact state between the light receiving element 1222 and the skin of the subject is stabilized at the time of measurement, so that the reflected light can be detected stably.

(Embodiment 7)
The above-described biological information measuring apparatuses according to the first to sixth embodiments include a strain gauge, a thermometer, a thermometer, an acceleration sensor, a gyro sensor, a piezoelectric sensor, a barometric pressure sensor, a blood pressure meter, an electrochemical sensor, GPS (Global Positioning System), and vibration. Various sensors such as a meter may be provided. With these sensors, heart rate, pulse, rhythm variation, EKG (Electrocardiogram), ECG (Electrocardiogram), respiratory rate, skin temperature, body temperature, body heat flow, electrodermal reaction, GSR ( Galvanic skin reflex (electrocutaneous reflex), EMG (Electromyogram), EEG (Electroencephalogram), EOG (Electrooculography), blood pressure, body fat, hydration level, activity level, , Oxygen consumption, glucose, blood sugar level, muscle mass, muscle pressure, bone pressure, ultraviolet absorption, sleep state, physical condition, stress state, body position (eg, lying, standing, sitting, etc.) Or one or more Based on the data indicating the physical parameters, it is possible to derive information about the physiological condition of the individual. Also, the values obtained by these various sensors are transmitted to portable communication terminals such as smartphones, mobile phones, feature phones, and information processing terminals such as computers and tablet computers, for example, You may perform the calculation process of a physiological parameter in a processing terminal.

  The user inputs his / her profile into the biological information measuring device, the portable communication terminal, or the information processing terminal before measuring the biological information. This allows the user to take into account the user's unique characteristic information and environment that needs to be addressed to maximize the likelihood of establishing and maintaining a recommended healthy lifestyle based on their profile and biometric measurements. Information can be provided. Information provided includes exercise information such as exercise type, exercise intensity, exercise time, etc., meal time, amount of meal, recommended intake ingredients and intake menu, intake intake ingredients and intake menu to be avoided, etc. Dietary information, sleep time, sleep depth, sleep quality, wake-up time, landing time, working time, stress information, calorie consumption, calorie intake, calorie balance, etc., basic metabolism, body One or more of physical information such as fat mass, body fat percentage, muscle mass, etc., medication information, supplement intake information, medical information, etc. may be mentioned.

  The user's own profile to be entered in advance includes, for example, age, date of birth, gender, hobby, occupation, blood type, past sports history, activity level, meal, regularity of sleep, regularity of defecation habits, status User characteristics such as adaptability, persistence, responsiveness, strength of response, nature, user self-independence level, self-reliance, self-management, sociality, memory and academic fulfillment ability, user arousal level, cognitive speed , Ability to avoid attention alienation factors, user attention, including wakefulness and self-supervision ability, attention continuation ability, weight, height, blood pressure, user health, doctor checkup results, doctor checkup date, doctor and health Presence or absence of contact with the administrator, drugs and supplements currently taken, presence or absence of allergies, history of allergies, current allergic symptoms, findings of health related behaviors, users History of illness, user's surgery history, family history, social events such as divorce or unemployment that require individual adjustments, user's health priorities, values, ability to change behavior, causes of life stress Possible events, stress management methods, user self-awareness, user empathy, user authority delegation, user self-esteem, user exercise, sleep state, relaxation state, daily routine of daily activities, user's User perceptions of the character of an important person in life (eg, spouse, friend, colleague or boss), whether there are conflicts that interfere with a healthy lifestyle or contribute to stress in the relationship of the important person One or more of the above and the like.

  Here, in order to maximize the possibility of establishing and maintaining a recommended healthy lifestyle, the embodiment 7 can receive specific characteristic information and environmental information of a user who needs to take action. Such a biological information measuring device will be described with reference to FIGS. FIG. 14 is a diagram illustrating an outline of a web page serving as a starting point of a health manager in the biological information measurement apparatus according to the seventh embodiment. FIG. 15 is a diagram illustrating an example of a nutrition web page, and FIG. 16 is a diagram illustrating an example of an activity level web page. FIG. 17 is a diagram illustrating an example of a mental concentration web page, and FIG. 18 is a diagram illustrating an example of a sleep web page. FIG. 19 is a diagram illustrating an example of a daily activity web page, and FIG. 20 is a diagram illustrating an example of a spirit level web page.

  Although not shown, the biological information measuring device according to the seventh embodiment includes a sensor device connected to a microprocessor, for example. In the biological information measuring device according to the seventh embodiment, data on various daily activities that are finally sent to the monitor unit and stored, personal data input by the user from a website maintained by the monitor unit, or Life information is processed by a microprocessor and provided as biological information. Hereinafter, a specific example will be described and described.

  A user accesses a health manager for the user via a web page, application software, or other communication medium. FIG. 14 shows, as an example, a web page 550 that is the starting point of the health manager. The health manager web page 550 shown in FIG. 14 provides various data to the user. The data provided in this way includes, for example, (1) data indicating various physiological parameters based on values measured by various sensor devices, and (2) data derived from data indicating various physiological parameters. (3) one or more of data indicating various context parameters generated by the sensor device and data entered by the user.

  The analysis state data indicates (1) data indicating various physiological parameters acquired by the sensor device, (2) data derived from various physiological parameters, and (3) various context parameters acquired by the sensor device. Characterized by the use of certain utilities or algorithms to convert one or more of the data and data entered by the user into calculated health, (4) health and lifestyle index, etc. There is. For example, things such as the amount of calories, protein, fat, carbohydrates and certain vitamins can be calculated based on data entered by the user in relation to the food consumed. As another example, skin temperature, heart rate, respiration rate, heat flow and / or GSR can be used to provide the user with an index of stress level over a desired time. As yet another example, skin temperature, heat flow, beat-to-beat variation, heart rate, pulse rate, respiratory rate, core body temperature, electrical skin reaction, EMG, EEG, EOG, blood pressure, oxygen consumption, ambient sound and acceleration By using body movements detected by a device such as a meter, an index of sleep patterns over a desired time can be provided to the user.

  A web page 550 shown in FIG. 14 displays a health index 555 as a health level. This health index 555 is a graphical utility for measuring user performance and the degree of achievement of recommended healthy daily routines and feeding them back to member users. As described above, the health index 555 indicates the progress of actions related to the health status and health maintenance of the member users. The health index 555 includes six categories related to the user's health and lifestyle: nutrition, activity level, mental concentration, sleep, daily activity, and spirit (total feeling). The category of “nutrition” relates to information on what, when and how much the person (user) eats and drinks. The “activity level” category relates to the amount of exercise that the person moves around. The category of “Mental Concentration” relates to the quality of the activity (ability) for the person (user) to become relaxed when the spirit of the person (user) is highly concentrated, and the time for which the person concentrates on the activity. The category of “sleep” relates to the sleep quality and quantity of the person (user). The “Daily Activity” category relates to what the person (user) has to do every day and the health risks the person encounters. The category of “Energetic (feelings)” relates to the general perception of whether or not you feel good about a particular day. Each category is preferably provided with a level display or bar graph showing what the user has achieved for that category on a scale that varies from “bad” to “good”.

  When each member user completes the initial survey described above, a profile is created that provides the user with a summary of their characteristics and living environment, and recommended healthy daily routines and / or goals are presented . Recommended healthy routines include any combination of appropriate nutrition, exercise, mental concentration, and specific advice on the user's daily activities (life). An exemplary schedule or the like may be presented as a guide on how to incorporate these recommended healthy daily activities into the user's life. The user regularly receives the survey and, based on the results, implements the items described above accordingly.

  The “nutrition” category is calculated from both data entered by the user and data sensed by the sensor device. Data entered by the user includes the time and eating time for breakfast, lunch, dinner, and any snack, as well as food and vitamin supplements and water and other liquids (drinks) that are consumed during a preselected time. Water and liquid food). Based on this data and the accumulated data on the known properties of various foods, the central monitoring unit is able to use well-known nutritional variables such as calories burned or content of proteins, fats, carbohydrates, vitamins, etc. Calculate the value.

  In the “Nutrition” category, decisions can be made regarding recommended healthy daily routines based on the bar graph showing nutrition of the health index 555. This recommended healthy daily routine can be adjusted based on information such as the user's gender, age, height / weight. In addition, you or your agent set specific nutritional goals for the amount of nutrients and water, such as calories, protein, fiber, fat, and carbohydrates you consume every day, and the percentage of your total intake. be able to. Parameters used to calculate the bar graph include the number of meals per day, water consumption, the type of food eaten daily, and the amount entered by the user.

  Nutritional information is presented to the user via a nutrition web page 560 as shown in FIG. Nutrition web page 560 includes nutrition value charts 565 and 570 showing the actual and target values of nutrition in a pie chart, and nutrition intake charts 575 and 580 showing the actual total amount of nutrient intake and the target total nutrient intake, respectively. It is preferable to include. Nutrition numerical charts 565, 570 preferably show percentages such as carbohydrates, proteins and fats, and nutrition intake charts 575, 580 show total calorie values and target values for fats, carbohydrates, proteins and vitamins. It is preferable to show the components separately. Nutrition web page 560 directly checks history 585 showing time spent on food and water, user news articles related to nutrition, advice on improving nutritional routines, and relevant advertisements somewhere on the network It also includes a hyperlink 590 that allows it to be performed, and a calendar 595 capable of selecting an application period and the like. The item indicated by the hyperlink 590 can be selected based on information obtained from the survey about the individual and the individual's performance measured by the health index.

  The “activity level” category of the health index 555 is designed to support the user's check on when and how (actually) the user acted on that day. And data sensed by the sensor device are used. The data entered by the user is related to the user's daily activities, for example, the user works from 8 am to 5 pm at the desk and then takes an aerobics course from 6 pm to 7 pm Details are included. Relevant data sensed by the sensor device includes heart rate, motion sensed by devices such as accelerometers, heat flow, respiratory rate, calories burned, GSR, and hydration levels, which are sensor devices. Or it can be taken out by the central monitor unit. Calorie consumption is calculated by multiplying the type of exercise entered by the user with the duration of the exercise entered by the user, multiplying the sensed exercise with the duration of exercise and the filter constant, or the detected heat flow, time and filter constant. It can be calculated by various methods such as multiplication of

  In the “activity level” category, a recommended healthy daily routine can be determined based on a bar graph showing the activity level of the health index 555. This recommended healthy daily routine is the minimum target calorie consumed in the activity. The minimum target calorie can be set based on information such as the user's sex, age, height, and weight. The parameters used to calculate the bar graph are the time spent on various exercise or energetic lifestyle activities, burning more than what the user entered and / or what the sensor device sensed or pre-calculated energy consumption parameters Contains the number of calories burned.

  Information on the activity (movement) of the individual user is presented to the user by an activity level web page 600 shown in FIG. The activity level web page 600 includes an activity graph 605 in the form of a bar graph that monitors user activity in three categories: “high”, “medium”, and “low” for a given unit time. An activity percentage chart 610 in the form of a pie chart can be presented to show the percentage of a predetermined period, such as one day, that a user has spent in each category. The activity level web page 600 may also provide a calorie display (not shown) for displaying items such as total calorie burn, daily calorie target value, total calorie intake, and aerobics exercise time. . Activity level web page 600 includes at least one hyperlink 620 to allow the user to directly check for related news articles, advice on improving daily activity levels, and related advertisements on the network.

  Activity level web page 600 can be viewed in a variety of formats, but a graph or chart such as a bar graph, pie chart, and both can be selected by the user and can be selected by an activity level check box 625. is there. The activity level calendar 630 is provided so that an application period or the like can be selected. The item shown in the hyperlink 620 can be selected based on the information extracted from the individual through the survey and the results measured by the health index.

  The “Mental Concentration” category of health index 555 is designed to help users monitor parameters related to time spent performing activities that allow the body to reach deep relaxation while concentrating on the spirit. And based on both data input by the user and data sensed by the sensor device. Specifically, the user can enter the start and end times of relaxation activities such as yoga or meditation. The quality of these activities, as determined by the depth of mental concentration, can be measured by monitoring parameters including skin temperature, heart rate, respiratory rate and heat flow as sensed by the sensor device. It is also possible to take advantage of the percentage change in GSR obtained by either the sensor device or the central monitor unit.

  In the “Mental Concentration” category, a recommendation can be made regarding a recommended healthy routine based on a bar graph showing the level of mental concentration activity of the health index 555. This recommended healthy daily routine includes daily participation in activities that deeply relax the body while keeping the mind highly focused. The parameters used to calculate this bar graph include the length of time spent on mental concentration activity, and the skin temperature, heart rate perceived by the sensor device, from the baseline indicating the depth or quality of the mental concentration activity, This includes percentage change in respiratory rate, heat flow or GSR.

  Information regarding deeply self-respecting behavior (introspection) and time spent for mental concentration activities such as deep relaxation of the body is presented to the user via the mental concentration web page 650 shown in FIG. In addition, mental concentration activity is sometimes called a session. The mental concentration web page 650 includes a time 655 spent in the session, a target time 660, a comparison portion 665 showing the target value and actual value of the depth of mental concentration, skin temperature, heart rate, respiratory rate, heat flow and / or GSR. Histogram 670 showing the overall stress level derived from

  In the comparison portion 665, the outline of the person indicating the target mental concentration state is indicated by a solid line, and the outline of the human being indicating the actual mental concentration state is blurred according to the level of mental concentration (in FIG. 17, it is indicated by a broken line). And the solid line. The preferred mental concentration web page 650 also includes hyperlinks 680 that allow users to directly check related news articles, advice on improving mental concentration, and related advertisements on the network, related to improving daily concentration on mental concentration. Includes advice and related advertisements, and a calendar 685 that allows the application period to be selected. The item indicated by the hyperlink 680 can be selected based on the information obtained from the individual through the survey and the results measured by the health index.

  The “sleep” category of health index 555 is designed to help users monitor sleep patterns and sleep quality. This category is intended to help users learn about the importance of sleep in a healthy lifestyle and the relationship of sleep to the circadian cycle, which is a normal daily change in body function. The “sleep” category is based on both data entered by the user and data sensed by the sensor device. Data entered by the user during each relevant time interval includes the user's sleep time and wake-up time (sleep time) and sleep quality rank. Relevant data obtained from sensor devices include skin temperature (body temperature), heat flow, beat-to-beat variation, heart rate, pulse rate, respiratory rate, core body temperature, electrical skin reaction, EMG, EEG, EOG, blood pressure And oxygen consumption. Also relevant are body sounds detected by ambient sounds and devices such as accelerometers. The data can then be used to calculate and derive sleep time and wake time, sleep interruption and sleep quality, sleep depth, and the like.

  A bar graph showing sleep for the health index 555 is displayed for a healthy daily routine that includes ensuring a preferred minimum sleep time every night, a predictable bedtime, and a wake-up time. Specific parameters that allow the calculation of this bar graph include daily sleep and wake-up times that are sensed by the sensor device or entered by the user, and sleep that is graded by the user or derived from other data. Quality is included.

  Information related to sleep is presented to the user by a sleep web page 690 shown in FIG. The sleep web page 690 includes a sleep time display 695 based on either data from the sensor device or data input by the user, a user bedtime display 700, and a wake-up time display 705. Note that the quality of sleep input by the user can be displayed using the sleep quality rank 710. When the display exceeding the time interval of the day is performed on the sleep web page 690, the sleep time display 695 is displayed as a cumulative value, the bedtime display 700, the wake-up time display 705, and the sleep quality rank 710 are average values. Can be calculated and displayed. Sleep web page 690 also includes a sleep graph 715 that can be selected by the user to calculate and display one sleep-related parameter over a predetermined time interval. FIG. 18 shows the change in heat flow (body temperature) over the day, but this heat flow tends to be low during sleep and high when waking up. From this information, the person's biorhythm can be obtained.

  The sleep graph 715 displays data from an accelerometer incorporated in a sensor device that monitors body movement in a graph. The sleep web page 690 also includes a hyperlink 720 that allows the user to directly check sleep related news articles, advice on improving sleep routines, and related advertisements on the network and associated time. And a sleep calendar 725 for selecting an interval. The item indicated by the hyperlink 720 can be specially selected based on the information obtained from the individual in the survey and the results measured by the health index.

  The “Daily Activity” category of Health Indicator 555 is designed to help users monitor certain activities and risks related to health and safety, all of which are entered by the user. Is based. There are four categories of sub-concepts in the category of “daily activities” relating to activities of daily living. Specifically, (1) items related to personal hygiene that allow users to monitor activities such as taking care of teeth or taking showers using a toothbrush or floss; (2) Keep track of whether you are taking supplements and allow health monitoring items to allow users to monitor tobacco or alcohol consumption, and (3) spend time, leisure and mental concentration activities with family or friends It can be divided into items related to personal time that allow the user to monitor, and (4) items related to responsibility that allow the user to monitor work and household activities such as household chores.

  In the “daily activity” category, the bar graph indicating “daily activity” of the health index 555 is preferably displayed for the recommended healthy daily routine described below. As an example of a daily routine for personal hygiene, it is desirable for users to take a shower or bath every day, keep their teeth clean with a brush and floss every day, and maintain regular bowel movements. In addition, as an example of a daily routine related to health maintenance, it is desirable for a user to take drugs, vitamins and / or supplements, quit smoking, save alcohol, and monitor health daily by a health manager. An example of a personal time routine is to create time for the user to spend at least a predetermined time each day with their family and / or spend good quality time with friends, reduce work time, and incorporate leisure or play time It is desirable to conduct activities that use the head. As an example of the daily routine regarding responsibility, it is desirable that the user does miscellaneous things at home and keeps his promises without being late for work. The bar graph is determined based on information entered by the user and / or based on the degree to which the user completes the activities listed daily.

  Information regarding these activities is presented to the user via the daily activity web page 730 shown in FIG. The activity chart 735 on the daily activity web page 730 indicates whether the user has performed what is required by the daily routine. The activity chart 735 can be selected for one or more of the sub-concepts. In activity chart 735, a box with a color or shadow indicates that the user has performed the required activity, and a box without a color or shadow indicates that the user has not performed the activity. . Activity chart 735 can be created and viewed at selectable time intervals. FIG. 19 shows an example of personal hygiene and personal time categories for a particular week. In addition, the daily activity web page 730 includes hyperlinks 740 that allow the user to directly check for relevant news articles, advice on improving daily activities on daily activities, and related advertisements on the network. , And a daily activity calendar 745 for selecting relevant time intervals. The item shown in the hyperlink 740 can be selected based on information obtained from the individual in the survey and results determined by the health index.

  The “Energy” category of the health index 555 is designed to allow the user to monitor the perception of whether or not he / she was active on a particular day, and is essentially a subjective grade that the user inputs directly It is based on information. Users are divided into the following nine areas: (1) Mental acuity, (2) Mental and psychological well-being, (3) Energy level, (4) Ability to cope with stress in life, (5) Rank with respect to the degree of respect for face-to-face, (6) physical well-being, (7) self-restraint, (8) motivation, and (9) comfort in relation to others, preferably using a scale from 1 to 5 Do. These degrees (grades) are averaged and used to calculate the health indicator 555 bar graph.

  FIG. 20 shows an energetic web page 750. The spirit web page 750 allows the user to check the spirit over a user selectable time interval, including any continuous or discontinuous date. In the example shown in FIG. 20, the energy level is displayed as a health index. In the Genkiness web page 750, the Genkiness selection box 760 allows the user to make a selection to check the Genki bar graph 755 for one category, or for two categories or more. The bar graph 755 of the spirit can be compared side by side. For example, the user may want to activate only the sleep bar graph to check if the overall sleep grade has improved compared to the previous month. Or, by simultaneously displaying sleep and activity levels, the sleep grade and the corresponding activity level grade are compared and checked to see if there is any correlation between the dates. There is a case. Display nutritional and spiritual grades for a given time interval to check whether there is any correlation between daily dietary habits and dietary habits and spirituality during that interval There is a case. FIG. 20 shows a bar graph comparison of sleep and activity levels for the week of June 8 to June 14 as an example for illustration. The Genkiness web page 750 also shows the total number of days the user has logged in and used the health manager, the percentage of days the user has used the health manager since joining, and the user uses the sensor device to collect data Also included is a tracking calculator 765 that displays access information, such as the percentage of time spent, and statistics.

  14 includes a plurality of category summaries 556a to 556f that can be selected by the user, each of which corresponds to the category of the health index 555 as the health level. Each category summary 556a-556f presents a subset of pre-selected and filtered data for the corresponding category. The nutrition category summary 556a shows the daily target and actual values of caloric intake. The activity level category summary 556b shows the daily target value and the actual value of the calorie content. The mental concentration category summary 556c shows the target and actual values of the depth of mental concentration. The sleep category summary 556d shows the target sleep time, actual sleep time, and sleep quality grade. Daily activity category summary 556e displays target and actual scores based on the ratio of completed activities to recommended healthy daily routines (daily activities). The spirit category summary 556f shows the goal and actual grade of the spirit for the day.

  Web page 550 also includes hyperlinks (not shown) to news articles, comments to users based on trends such as malnutrition checked by the initial survey (not shown), and cues (not shown). You can also. A daily routine portion 557 that provides information to the user daily may also be included. As a comment of the daily routine portion 557, for example, an intake amount of water that is necessary every day, advice on a specific means that enables it, and the like can be displayed. The web page 550 may also include a problem solving section 558 that actively evaluates the user's performance in each category of the health index 555 and provides advice for improvement. For example, if the system indicates that the user's sleep level is “low” and the user is insomnia, the problem resolution section 558 can advise on ways to improve sleep. The problem solving section 558 can also include user questions regarding performance improvements. Web page 550 can also include a daily data section 559 that launches an input dialog box. The input dialog box allows the user to easily input various data required by the health manager. As is known in the art, the input of data can be selected from a pre-presented list or normal free text input. Web page 550 can also include a body condition section 561 that provides information about the user's height, weight, body measurements, BMI, and vital signs such as heart rate, blood pressure, or any physiological parameter. .

  DESCRIPTION OF SYMBOLS 10 ... Band part, 12 ... Band hole, 14 ... Buckle part, 15 ... Band insertion part, 16 ... Projection part, 30 ... Case part, 32 ... Light emission window part, 34 ... Top case, 35 ... Terminal part, 36 ... Bottom Case: 40 ... Sensor unit as pulse wave measurement module, 52 ... Projection, 70 ... Wall, 135 ... Transparent resin, 140 ... Light receiving unit, 141 ... Semiconductor substrate, 142 ... Light receiving element (photodiode), 143 ... Optical filter, 144, 146, 148 ... silicon oxide layer, 145, 147 ... silicon nitride layer, 150 ... light emitting part, 151 ... dome lens, 160 ... substrate, 170 ... body motion sensor part, 172 ... acceleration sensor, 180 ... Vibration generation unit, 200 ... processing unit, 210 ... signal processing unit, 212 ... body motion noise reduction unit, 220 ... pulsation information calculation unit, 230 ... notification control unit, 240 ... storage unit, DESCRIPTION OF SYMBOLS 50 ... Communication part, 252 ... Antenna, 260 ... Notification part, 274 ... Connection terminal, 400 ... Biological information measuring device as electronic equipment, 420 ... Portable terminal, 430 ... Display part, 1010, 1020, 1030, 1040 ... Heart rate Monitoring device, 1012, 1022 ... sensor, 1034 ... electrical connection terminal, 1041, 1042, 1043 ... frame portion, 1052 ... processor, 1054 ... driver, 1121, 1221, 1223 ... light emitting element, 1122, 1222 ... light receiving element.

Claims (12)

A light emitting unit for emitting light to the subject;
A light receiving unit for receiving reflected light from the subject,
The light receiving unit is
A light detector for detecting the reflected light;
An optical filter disposed on the light detection unit and configured by a plurality of layers;
Of the plurality of layers of the optical filter, the layer farthest from the light detection unit is made of silicon oxide, and the pulse wave measurement module is characterized in that:   2. The pulse wave measurement module according to claim 1, wherein the optical filter includes a layer made of the silicon oxide and a layer made of silicon nitride. 3.   The optical filter is characterized in that the layer closest to the light detection portion is a layer made of the silicon oxide, and the layers made of the silicon oxide and the layers made of the silicon nitride are alternately stacked. The pulse wave measurement module according to claim 2.   4. The pulse wave measurement module according to claim 2, wherein a layer thickness of the silicon nitride layer is smaller than a layer thickness of the silicon oxide layer. 5.   4. The pulse wave measurement module according to claim 2, wherein a layer thickness of the layer made of silicon nitride is thicker than a layer thickness of the layer made of silicon oxide. 5.   6. The pulse wave measurement module according to claim 1, wherein a thickness of the optical filter is 0.7 μm or more and 1.0 μm or less.   6. The pulse wave measurement module according to claim 1, wherein the optical filter has a thickness of 0.1 μm or more and 0.4 μm or less.   The pulse wave measurement module according to claim 1, wherein the light receiving unit is sealed with a transparent resin.   The pulse wave measurement module according to claim 8, wherein the transparent resin can contact the subject. A wall portion disposed between the light emitting portion and the light receiving portion;
The pulse wave measurement module according to any one of claims 1 to 9, wherein the wall portion protrudes toward the subject side with respect to the light emitting portion and the light receiving portion. Including a wall portion, and a frame portion surrounding the light receiving portion,
The pulse wave measurement module according to claim 10, wherein an upper end surface of the frame part is higher than an upper surface of the light receiving part.   An electronic apparatus comprising the pulse wave measurement module according to any one of claims 1 to 11.

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