WO2022059063A1 - Biological information acquisition device, system, biological information acquisition method, and recording medium - Google Patents

Abstract

The present invention acquires high-precision biological information from high-quality biological data. A pre-measurement unit (11) uses a plurality of optical sensors, which project light having mutually different wavelengths or wavelength bands onto a living body, to carry out pre-measurement of biological data. A comparison unit (12) compares the intensities of light, detected by the respective plurality of optical sensors, on the basis of the biological data output by the plurality of optical sensors. A selection unit (13) selects one of the plurality of optical sensors on the basis of comparison results of the intensities of light. A main measurement unit (14) uses the one optical sensor, selected on the basis of the comparison results of the intensities of light, to carry out a main measurement of the biological data. An analysis unit (15) acquires biological information by analyzing the biological data obtained as a result of the main measurement.

Description

Biometric information acquisition device, system, biometric information acquisition method, and recording medium

The present invention relates to a biometric information acquisition device, a system, a biometric information acquisition method, and a recording medium, and more particularly to a biometric information acquisition device that acquires biometric information based on biometric data received from a biometric detection device.

In recent years, for the purpose of health management, etc., by receiving various vital signals (hereinafter referred to as biometric data) from a biometric detection device and analyzing the received biometric data, information on the mind and body of the living body (hereinafter referred to as biometric information). A biometric information acquisition device that acquires (called) is becoming widespread.

An example of biological information acquired from biological data by a biological information acquisition device is pulse wave information based on the heartbeat of the living body. The pulse wave information can be used not only as an index of health information itself, but also for estimating internal information such as stress.

Some biometric detection devices use optical sensors. For example, Patent Document 1 describes an optical sensor module including a plurality of light emitting elements and one light receiving element. Smart devices such as smart watches or data loggers are examples of biometric devices.

In many cases, the biological detection device uses a wristband type (also called a wristwatch type). This is because the wristband type biological detection device is easy to attach to the living body. However, the wristband type biological detection device has a demerit that it is easily affected by the age and body shape of the living body. Specifically, many wristband-type biodetection devices are designed for adult men, so if the user is a woman, an elderly person, or a young person, the biometric detection device A gap is created between the arm and the user's arm, making it difficult to detect accurate biometric data.

On the other hand, the stick-on type biometric detection device that is directly attached to the skin has a higher degree of adhesion to the skin than the wristband-type biometric detection device, so that the burden on the skin is less and there is less data loss. Is expected as an advantage, and much development is still underway.

As described above, as a biometric detection device for acquiring biometric data of the human body, a wristband type is selected because of its ease of wearing, and a sticking type is selected because of the accuracy of the obtained data. Development is in progress.

International Publication No. 2019/181268 Japanese Unexamined Patent Publication No. 2008-289807 Japanese Unexamined Patent Publication No. 2012-109926 Jikkai Sho 63-195811

In the related technique described in Patent Document 1, biological data is measured by using a plurality of optical sensors that project light having a wavelength or wavelength range different from each other onto a living body. However, the light absorption rate differs depending on the wavelength or wavelength range, depending on the elements constituting the tissue of the living body to be measured.

With an optical sensor that irradiates a living body with light of a wavelength or wavelength range with a high absorption rate due to the elements of the tissue of the living body, noise on the biometric data becomes large, and high quality biometric data cannot be obtained. Therefore, there are variations in quality among the biometric data received by the biometric information acquisition device from the plurality of optical sensors. It is difficult for a biometric information acquisition device to acquire accurate biometric information from poor quality biometric data.

The present invention has been made in view of the above problems, and an object thereof is to obtain highly accurate biometric information from high quality biometric data.

The biometric information acquisition device according to one aspect of the present invention includes a pre-measurement means for performing pre-measurement of biometric data using a plurality of optical sensors that project light in different wavelengths or wavelength ranges onto the living body, and the plurality of pre-measurement means. The comparison means for comparing the light intensity detected by each of the plurality of optical sensors based on the biological data output from each of the optical sensors, and the plurality of optics based on the comparison result of the light intensity. The measuring means for performing the main measurement of the biological data using the selection means for selecting one of the formula sensors and one optical sensor selected based on the comparison result of the light intensity, and the main measurement. It is provided with an analysis means for acquiring biometric information by analyzing the biometric data obtained as a result of the above.

The system according to one aspect of the present invention includes a pre-measurement means for performing pre-measurement of biological data by using a plurality of optical sensors that project light having different wavelengths or wavelength ranges onto a living body, and the plurality of optical sensors. Based on the biometric data output from each of the above, the comparison means for comparing the light intensity detected by each of the plurality of optical sensors, and the comparison result of the light intensity of the plurality of optical sensors. As a result of the main measurement means for performing the main measurement of the biometric data using the selection means for selecting one of them and one optical sensor selected based on the comparison result of the light intensity. It includes a biometric information acquisition device including an analysis means for acquiring biometric information by analyzing the obtained biometric data, and a biometric detection device including the plurality of optical sensors.

In the biometric information acquisition method according to one aspect of the present invention, pre-measurement of biometric data is performed using a plurality of optical sensors that project light in different wavelengths or wavelength ranges onto the living body, and the plurality of optical sensors can be used. Based on the biometric data output from each, the light intensities detected by the plurality of optical sensors are compared, and one of the plurality of optical sensors is selected based on the comparison result of the light intensities. By performing the main measurement of the biometric data using one optical sensor selected and selected based on the comparison result of the light intensity, and analyzing the biometric data obtained as a result of the main measurement. Includes the acquisition of biometric information.

The recording medium according to one aspect of the present invention is to perform pre-measurement of biometric data by using a plurality of optical sensors that project light having different wavelengths or wavelength ranges onto a living body, and to use the plurality of optical sensors. One of the plurality of optical sensors is compared with the light intensity detected by each of the plurality of optical sensors based on the biometric data output from each, and based on the comparison result of the light intensity. Using one optical sensor selected based on the comparison result of the light intensity, the main measurement of the biological data is performed, and the living body obtained as a result of the main measurement is performed. It stores a program that causes a computer to acquire biometric information by analyzing data.

According to one aspect of the present invention, highly accurate biometric information can be obtained from high quality biometric data.

The configuration of the system including the biometric detection device and the biometric information acquisition device is shown schematically. It is a block diagram which shows the structure of the biological information acquisition apparatus which concerns on Embodiment 1. FIG. It is a graph which shows an example of the biological data acquired from the biological detection device by the biological information acquisition apparatus which concerns on Embodiment 1. FIG. It is a flowchart which shows the operation of the biological information acquisition apparatus which concerns on Embodiment 1. An example of the configuration of the biological detection device according to the second embodiment is shown. Another example of the configuration of the biological detection device according to the second embodiment is shown. Yet another example of the configuration of the biometric detection device according to the second embodiment is shown. An example of the configuration of the optical sensor included in the biometric detection device according to the second embodiment is shown. Another example of the configuration of the optical sensor included in the biometric detection device according to the second embodiment is shown. It is a flowchart which shows the operation of the biological information acquisition apparatus which concerns on Embodiment 3. It is a flowchart which shows the operation of the biological information acquisition apparatus which concerns on Embodiment 4. The configuration of the system including the biological detection device and the biological information acquisition device according to the fifth embodiment is schematically shown. An example of the hardware configuration of the biometric information acquisition device according to any one of the first to fourth embodiments is shown.

The detailed description of the embodiment is described below.

(Common to all embodiments and modifications)
FIG. 1 schematically shows a configuration of a system 1 common to embodiments 1 to 4 described later and variations thereof. As shown in FIG. 1, the system 1 includes a biometric detection device 100 (100A, 100B) and a biometric information acquisition device 10. In FIG. 1, the biological detection device 100 (100A, 100B) indicates any one of the biological detection device 100, the biological detection device 100A, and the biological detection device 100B, which will be described later. The biometric information acquisition device 10 and the biometric detection device 100 (100A, 100B) can communicate wirelessly or by wire depending on their respective communication functions.

The biometric information acquisition device 10 operates the biometric detection device 100 (100A, 100B) by transmitting a control signal to the biometric detection device 100 (100A, 100B) as described below.

The biological detection device 100 (100A, 100B) incidents an optical signal on a living body (human being in an example) (not shown). The optical signal passes through the skin of the living body, and is partially scattered and partially absorbed by the tissues in the living body. Then, the scattered or reflected light is emitted from the living body to the outside. The biological detection device 100 (100A, 100B) detects the light emitted from the biological body to the outside. The biological detection device 100 (100A, 100B) acquires biological data (also referred to as a biological signal) based on the detected light, and transmits the biological data to the biological information acquisition device 10.

The biometric information acquisition device 10 acquires biometric information by receiving biometric data from the biometric detection device 100 (100A, 100B) and analyzing the biometric data. The biological information is information on the mind and body of the living body, and in particular, is a measurable index value related to the health condition of the living body. For example, biometric information is pulse, blood flow, blood oxygen concentration, electroencephalogram, respiration, blood pressure, or sweating. The biological information acquisition device 10 may output the biological information acquired in this way to an external device (for example, a display). An example of a specific process executed by the biological information acquisition device 10 will be described in the first to fourth embodiments described later.

[Embodiment 1]
The first embodiment will be described with reference to FIGS. 2 to 4.

(Biological information acquisition device 10)
FIG. 2 is a block diagram showing the configuration of the biological information acquisition device 10 according to the first embodiment. As shown in FIG. 2, the biological information acquisition device 10 includes a front measurement unit 11, a comparison unit 12, a selection unit 13, a main measurement unit 14, and an analysis unit 15.

The pre-measurement unit 11 performs pre-measurement of biometric data using a plurality of optical sensors 200 (an example is shown in FIGS. 8 to 9) that project light of different wavelengths or wavelength ranges onto the living body. The pre-measurement unit 11 is an example of the pre-measurement means.

In one example, the pre-measurement unit 11 first inputs an inspection signal to a living body by using a plurality of optical sensors 200. Specifically, the pre-measurement unit 11 emits light having a different wavelength or wavelength range for each optical sensor 200 as an inspection signal from one or more light emitting elements 201 provided by each of the plurality of optical sensors 200. , The reflection from the living body is received by one (or a plurality) light receiving elements 202 provided in each of the plurality of optical sensors 200. Some examples of the configuration of the optical sensor 200 will be described later.

The test signal penetrates the skin of the living body, is partially scattered by the tissues in the living body, and is absorbed by the other part. Each of the plurality of optical sensors 200 receives light emitted from the inside of the living body to the outside by one or more light receiving elements 202. The plurality of optical sensors 200 acquire biometric data based on the light received by one or more light receiving elements 202. Then, each of the plurality of optical sensors 200 transmits biometric data to the pre-measurement unit 11.

In this way, the pre-measurement unit 11 receives biometric data from each of the plurality of optical sensors 200. In the above procedure, the pre-measurement unit 11 operates together with the optical sensors 200 of N sets (N is an integer of 1 or more) provided in the biometric detection device 100. As a result, N sets of biometric data can be obtained. N sets of biometric data correspond to N sets of optical sensors.

The front measurement unit 11 receives N sets of biometric data from the biometric detection device 100 equipped with N sets of optical sensors 200. Then, the front measurement unit 11 outputs the biometric data output from each of the plurality of optical sensors 200 to the comparison unit 12.

Here, the biometric data output from each optical sensor 200 includes identification information for identifying one light receiving element 202 provided by each optical sensor 200 and light received by each light receiving element 202 at the same time. It contains at least information indicating the intensity of light.

When one optical sensor 200 includes a plurality of light receiving elements 202, the biometric data may include at least information indicating the intensity of light received by each of the light receiving elements 202 at the same time. Hereinafter, a case where one optical sensor 200 includes only one light receiving element 202 will be described.

As an example, when the biological information acquisition device 10 acquires pulse wave information as biological information, the guideline for the time for the pre-measurement unit 11 to continue the pre-measurement will be described. There are many known methods for measuring pulse waves. Generally, it is often calculated from changes in volume in blood vessels, changes in components such as blood cells, changes in expansion and contraction of blood vessels, etc., and these changes are sensed at any time to derive a pulse wave waveform. Therefore, it is necessary to select a wavelength that can sense changes in the volume, changes in components such as blood cells, and changes in the expansion and contraction of blood vessels.

In the above case, the pre-measurement unit 11 needs to perform pre-measurement for a time during which at least one pulse wave can be acquired. For most people, the pulse per minute is often 40 (1 beat in 1.5 seconds) to 100 (1 beat in 0.6 seconds). Therefore, pre-measurement for about 1 second to several seconds is required.

The comparison unit 12 compares the light intensity detected by each of the plurality of optical sensors 200 based on the biometric data output from each of the plurality of optical sensors 200. The comparison unit 12 is an example of the comparison means.

In one example, the comparison unit 12 receives biometric data output from each of the plurality of optical sensors 200 from the front measurement unit 11.

FIG. 3 is a graph showing an example of biometric data output from one optical sensor 200. The biological data shown in FIG. 3 represents a waveform based on a pulse wave of a living body within a specific time. The comparison unit 12 compares the light intensities detected by each of the plurality of optical sensors 200 based on the biological data exemplified in FIG.

In one example, the comparison unit 12 simply compares the light intensities detected by the plurality of optical sensors 200. The comparison unit 12 extracts information indicating the intensity of light received by one or more light receiving elements 202 within a specific time from the biological data output from each of the plurality of optical sensors 200. Then, the comparison unit 12 compares the light intensities detected by each of the plurality of optical sensors 200.

In another example, the comparison unit 12 calculates the difference Δ (FIG. 3) between the maximum value and the minimum value of the light intensity detected by each optical sensor 200, and then sets the maximum value of the light intensity. Compare the values divided by Δ. The value obtained by dividing the maximum value of the light intensity by the difference Δ is a value close to a general S / N ratio. Hereinafter, the former case, that is, the configuration in which the comparison unit 12 compares the light intensities detected by the plurality of optical sensors 200 will be described.

The comparison unit 12 outputs data including information indicating the comparison result to the selection unit 13. The information indicating the comparison result is one optical sensor 200 including the light receiving element 202 having the maximum average value or maximum value of the light intensity detected within a specific time among the plurality of optical sensors 200. Point to.

The selection unit 13 selects one of the plurality of optical sensors 200 (FIGS. 5 to 7) based on the comparison result of the light intensity. The selection unit 13 is an example of selection means.

In one example, the selection unit 13 receives data from the comparison unit 12 including information indicating a comparison result regarding the light intensity detected by each of the plurality of optical sensors 200. The selection unit 13 is the average value or the maximum value of the light intensity detected within a specific time among the plurality of optical sensors 200 included in the biometric detection device 100 (100A, 100B) based on the received data. Select the optical sensor 200 with the maximum. The selection unit 13 outputs data including identification information for identifying one selected optical sensor 200 to the measurement unit 14.

The main measurement unit 14 performs the main measurement of biometric data using one optical sensor 200 selected based on the comparison result of the light intensity. The measuring unit 14 is an example of the measuring means.

In one example, the measuring unit 14 first receives data including identification information for identifying one selected optical sensor 200 from the selection unit 13. The measuring unit 14 inputs an inspection signal to the living body by using one optical sensor 200 selected by the selection unit 13.

Specifically, the measuring unit 14 can be used as an inspection signal from one or more light emitting elements 201 (FIGS. 8 to 9) provided in one selected optical sensor 200 in a specific wavelength or wavelength range. Emit light. The main measurement unit 14 may perform the main measurement for a time equivalent to the time for the pre-measurement unit 11 described above to continue the pre-measurement.

After that, the measuring unit 14 receives biometric data from one selected optical sensor 200. The measuring unit 14 outputs the biometric data output from one selected optical sensor 200 to the analysis unit 15.

The analysis unit 15 acquires biometric information by analyzing the biometric data obtained as a result of this measurement. The analysis unit 15 is an example of analysis means.

In one example, the analysis unit 15 receives the biometric data output from one selected optical sensor 200 from the measurement unit 14. The analysis unit 15 analyzes the received biometric data. For example, the analysis unit 15 acquires the biometric information as described above by analyzing the biometric data by the method described in any one of Patent Documents 2 to 4. The analysis unit 15 may output the acquired biometric information to an external device (for example, a display device).

(Operation of biometric information acquisition device 10)
The operation of the biological information acquisition device 10 according to the first embodiment will be described with reference to FIG. FIG. 4 is a flowchart showing a flow of processing executed by each part of the biological information acquisition device 10.

As shown in FIG. 4, first, the pre-measurement unit 11 performs pre-measurement of biometric data using a plurality of optical sensors 200 that project light having different wavelengths or wavelength ranges onto the living body (S1).

The front measurement unit 11 outputs the biometric data output from each of the plurality of optical sensors 200 to the comparison unit 12. In the later modification, when the biological detection device 100 (100A, 100B) also includes a plurality of optical sensors 200 having light sensitivities in the same wavelength or wavelength range, the pre-measurement unit 11 executes. The processing to be performed will be described. However, in this embodiment 1 and later embodiments, it is assumed that the biometric detection device 100 (100A, 100B) does not include a plurality of optical sensors 200 having light sensitivity in the same wavelength or wavelength range.

Next, the comparison unit 12 compares the light intensity detected by each of the plurality of optical sensors 200 based on the biometric data output from each of the plurality of optical sensors 200 (S2). The comparison unit 12 outputs data including information indicating the comparison result of the light intensity to the selection unit 13.

The selection unit 13 receives data from the comparison unit 12 including information indicating the comparison result of the light intensity. The selection unit 13 selects one of the plurality of optical sensors 200 based on the comparison result of the light intensity (S3).

In one example, the selection unit 13 selects the optical sensor 200 having the maximum average value or maximum value of the light intensity detected by one or more light receiving elements 202 within a specific time. The selection unit 13 outputs data including information indicating the selection result of the optical sensor 200 to the measurement unit 14.

The measuring unit 14 receives data including information indicating the selection result of the optical sensor 200 from the selection unit 13. The measuring unit 14 performs the main measurement of biometric data using one optical sensor 200 selected based on the comparison result of the light intensity (S4). The measurement unit 14 outputs data including information indicating the result of the main measurement of biometric data to the analysis unit 15.

The analysis unit 15 receives data including information indicating the result of the main measurement of biometric data from the main measurement unit 14. The analysis unit 15 acquires the biometric information exemplified above by analyzing the biometric data obtained as a result of this measurement (S5). This completes the operation of the biological information acquisition device 10.

(Effect of this embodiment)
According to the configuration of the present embodiment, the pre-measurement unit 11 performs pre-measurement of biological data by using a plurality of optical sensors that project light having a wavelength or a wavelength range different from each other onto the living body. The comparison unit 12 compares the light intensity detected by each of the plurality of optical sensors based on the biometric data output from each of the plurality of optical sensors. The selection unit 13 selects one of the plurality of optical sensors based on the comparison result of the light intensity. The measuring unit 14 performs the main measurement of biometric data using one optical sensor selected based on the comparison result of the light intensity. The analysis unit 15 acquires biometric information by analyzing the biometric data obtained as a result of this measurement. In this way, since one optical sensor 200 used for the main measurement is selected based on the comparison result of the light intensity obtained in the previous measurement, the main measurement unit 14 has high quality from the selected optical sensor 200. Biometric data can be obtained. Therefore, the analysis unit 15 can acquire high-quality biometric information from high-quality biometric data.

Up to this point, the biological information acquisition device 10 according to the first embodiment has been described. Hereinafter, the biometric detection devices 100 (100A, 100B) that communicate with the biometric information acquisition device 10 in the system 1 (FIG. 1) will be described.

[Embodiment 2]
The second embodiment will be described with reference to FIGS. 5 to 9.

(Biological detection device 100)
FIG. 5 shows an example of the configuration of the biological detection device 100 according to the second embodiment. The user uses the biological detection device 100 in a state of being attached to the living body. As shown in FIGS. 5 and 6, the biometric detection device 100 includes a plurality of optical sensors 200, a power supply element 300, an arithmetic element 400, a communication element 500, and a memory 600 on one or more substrates 101. ing. In the biometric detection device 100 shown in FIG. 5, a plurality of optical sensors 200 are arranged in a line on one substrate 101. However, as in the biometric detection device 100A shown in FIG. 6, a plurality of optical sensors 200 may be arranged in a matrix on one substrate 101.

The biological detection device 100 may include three or more substrates 101 (not shown). The material of the substrate 101 is not particularly limited as long as it has a shape and material on which the optical sensor 200 and other elements can be mounted. Considering that the biological detection device 100 is attached to or attached to a living body, a flexible material is preferable for the substrate 101, and for example, a film substrate, a thin glass epoxy resin, or the like can be considered.

Regarding the arrangement of the plurality of optical sensors 200 in the biometric detection device 100, they are arranged in a line shape (FIG. 5), in a matrix shape (FIG. 6), or in a concentric circle shape (not shown). ) Etc., but any method may be used. However, if the optical sensors 200 are too far apart from each other, the biometric detection device 100 becomes too large. Therefore, it is desirable that the plurality of optical sensors 200 are arranged so as to fit in the general size of the palm of a person, about 5 cm.

The power device 300 has many options such as weight, shape, and whether it is a primary side power supply or a secondary side power supply. However, the power supply element 300 is not limited as long as sufficient power can be supplied to the optical sensor 200, the arithmetic element 400, and the communication element 500. For example, the power supply element 300 may be a very general power supply element such as a dry battery, a button battery, or a lithium ion storage battery.

The arithmetic element 400 is not particularly limited as long as it can control the driver of the optical sensor 200 or the optical sensor 200 mounted on the biological detection device 100.

The communication element 500 is for communicating between the biometric detection device 100 and the biometric information acquisition device 10. The communication element 500 is not limited in its form and specifications as long as it is possible to exchange biometric data and control signals between the optical sensor 200 or the biometric detection device 100 and the biometric information acquisition device 10.

In one example, the wireless or wired communication element 500 is selected based on the communication amount (signal amount), communication distance, and power consumption. For example, examples of the wireless format include Wi-Fi (registered trademark), Bluetooth (registered trademark), and Bluetooth LE (registered trademark). Of course, it is possible to select the wired communication element 500, but in that case, the design and characteristics of the biometric detection device 100 are significantly limited. For this reason, it is preferable to select a wireless type communication element 500.

The memory 600 temporarily stores biometric data, and the communication element 500 transfers biometric data offline to and from the biometric information acquisition device 10. In this case, the biometric data stored in the memory 600 is processed on the biometric detection device 100 (100A, 100B). Further, the arithmetic element 400 controls the operation of each part of the biological detection device 100 (100A, 100B) by executing a program read into the memory 600 of the biological detection device 100 (100A, 100B).

(Modification example of biometric detection device 100)
6 and 7 show a modified example of the biological detection device 100. In the biological detection device 100A shown in FIG. 6, a plurality of optical sensors 200 are arranged in a matrix on one substrate 101.

According to the configuration of the biological detection device 100A shown in FIG. 6, a plurality of optical sensors 200 are arranged in a matrix. The biological information acquisition device 10 can acquire biological information on the surface of a biological body based on biological data received from a plurality of optical sensors 200. For example, the biological information acquisition device 10 can acquire biological information indicating the distribution of veins under the skin of a living body based on biological data and identification information.

The other biometric detection device 100B shown in FIG. 7 includes two substrates 101A and 101B. In the biological detection device 100B, a plurality of optical sensors 200 are arranged (in a line) on the substrate 101A, while components other than the plurality of optical sensors 200 are arranged on the substrate 101B.

According to the configuration of the biometric detection device 100B shown in FIG. 7, a plurality of optical sensors 200 are arranged on one substrate 101A, and other components (power element 300 and arithmetic element 400 in FIG. 7). , Communication element 500, memory 600) are arranged on another substrate 101B. Therefore, the shape of the biological detection device 100B can be flexibly designed. Further, by removing only the substrate 101A from the biological detection device 100B (while not removing the substrate 101B), the failed optical sensor 200 can be easily replaced.

When the biological detection device 100 includes a plurality of substrates 101, it is possible to freely design which element is mounted on each substrate 101 in consideration of the size, weight, and the like. .. In one example, as in the biometric detection device 100B shown in FIG. 7, constituent elements other than the optical sensor 200 may be mounted together on another substrate 101, or only the power element 300 may be mounted on another substrate 101. It is also good.

(Example of biometric detection device 100 (100A, 100B))
Hereinafter, an embodiment of any one of the biometric detection devices 100 (100A, 100B) described in the second embodiment will be described.

In this embodiment, ROHM's SMLMN2ECTT86C LED is used as the light emitting element 201 of the optical sensor 200, and the SMLMN2ECTT86C LED sensor is used as the light receiving element 202 of the optical sensor 200.

A total of 10 optical sensors in a matrix of 5 rows x 2 columns on a glass epoxy board with a size of 25 mm x 35 mm and a thickness of 0.1 mm (which corresponds to the board 101) with an interval of 2 mm. It was equipped with 200. Further, a LIR1655 type button battery (an example of a power supply element 300) and a BLE element (an example of a communication element 500) are mounted on the same glass epoxy substrate.

(Optical sensor 200)
The details of the optical sensor 200 according to the second embodiment will be described. The optical sensor 200 includes one or more light emitting elements 201 capable of emitting light of a certain fixed wavelength (hereinafter referred to as λ), and one light receiving element 202 having sensitivity in a wavelength range including the wavelength λ. To prepare for. The plurality of optical sensors 200 included in the system 1 (FIG. 1) include one or more light emitting elements 201 and one light receiving element 202, respectively, but each optical sensor 200 has the above-mentioned wavelength. λ is different.

More specifically, the plurality of optical sensors 200 include one or more light emitting elements 201 that emit light at fixed wavelengths (λ = λ1, λ2, ...) Different from each other. On the other hand, one or more light receiving elements 202 have sensitivity in a wavelength range common to a plurality of optical sensors 200. The wavelength range in which one or more light receiving elements 202 have sensitivity is a fixed wavelength (λ = λ1, λ2, ...) Of the light output by one or more light emitting elements 201 provided in each optical sensor 200. Include all. Each optical sensor 200 generates biometric data based on light of a fixed wavelength (λ = λ1, λ2, ...) Output by one or more light emitting elements 201.

As the light emitting element 201 included in the optical sensor 200, for example, an LED (Light Emitting Diode) that emits light when a current is passed may be used. However, the light emitting device 201 is not limited in material or shape as long as it can emit light in a specific wavelength range or wavelength. As the light emitting element 201, either an inorganic material or an organic material can be used.

The emission intensity of the light emitting element 201 is not particularly limited as long as the reflected light obtained via the human body (living body) can be received by the light receiving element 202, but the forward voltage and the forward voltage set in the light emitting element 201 are not particularly limited. It is desirable to emit light below the standard value of. Specifically, when the LED described in the above embodiment is used as the light emitting element 201, the light emitting element 201 may be used at a standard value (20 mA in one example) or less of the forward current of this LED. desirable.

As the light receiving element 202 provided in the optical sensor 200, a photoelectric conversion element capable of converting light into electricity and current is used. Similar to the light emitting element 201, the light receiving element 202 can be made of either an inorganic material or an organic material. Further, the light receiving element 202 may have sensitivity in a wavelength range including all the wavelengths of light (λ = λ1, λ2, ...) Output by the light emitting element 201 provided in each of the plurality of optical sensors 200. For example, there are no restrictions on the material and shape. However, the light receiving element 202 needs to have sufficient sensitivity in the wavelength or wavelength range covered by the light emission of the light emitting element 201.

The measurement cycle of the optical sensor 200 is not particularly limited as long as it can detect biometric data based on pulse waves. However, if the measurement cycle is too long, the pulse wave detection accuracy will be low. On the other hand, even if the measurement cycle is short, it does not adversely affect the measurement accuracy, but it causes an increase in the amount of data and an increase in power consumption due to the measurement. Therefore, it is desirable to perform the measurement in a cycle of 10 Hz to 200 Hz in terms of frequency.

FIG. 8 is a block diagram showing an example of the configuration of an optical sensor 200 including one light emitting element 201 and one light receiving element 202. Since the optical sensor 200 shown in FIG. 8 is composed of one light emitting element 201 and one light receiving element 202, there is an advantage that the cost can be suppressed.

However, in another example, the ratio between the number of light emitting elements 201 included in the optical sensor 200 and the number of light receiving elements 202 included in the optical sensor 200 may be many to one.

FIG. 9 is a block diagram showing a configuration of an optical sensor 200 including a plurality of light emitting elements 201 and one light receiving element 202. As shown in FIG. 9, the optical sensor 200 includes a plurality of light emitting elements 201. However, in FIG. 9, the third light emitting element 201 is omitted. FIG. 9 is a block diagram showing an example of the configuration of an optical sensor 200 including a plurality of light emitting elements 201 and one light receiving element 202.

According to the configuration of the optical sensor 200 shown in FIG. 9, since a plurality of light emitting elements 201 are provided, even if any of the light emitting elements 201 fails, the remaining light emitting element 201 and the light receiving element 202 However, the function as the optical sensor 200 can be maintained.

Alternatively, it is also possible to form the optical sensor 200 by combining one light emitting element 201 and a plurality of light receiving elements 202. In that case, the biometric information acquisition device 10 needs to manage which light emitting element 201 of the optical sensor 200 targets the biometric data based on the light detected in order to acquire accurate biometric information.

Subsequently, a specific example of the method for determining the wavelength λ will be described below.

As for the amount of plasma in blood, it is possible to mainly monitor the water content in plasma, and for changes in components such as wavelength and blood cells, each blood cell component such as red blood cells, leukocytes, and platelets can be monitored. The wavelength λ is determined so that it is possible, and when monitoring the expansion and contraction of the blood vessel, it is possible to monitor the blood vessel wall. For example, hemoglobin, which is a pigment component in erythrocytes, absorbs light at 600 nm or less, so λ is determined to be 600 nm or less. On the other hand, since water such as plasma absorbs light in the infrared region well, a wavelength corresponding to infrared light (specifically, 750 nm or more) is selected as λ. However, even if λ deviates from the maximum absorption wavelength of the component, it is sufficient that the change of the component can be monitored, so that the wavelength λ can be selected from a wider wavelength range than the above.

Therefore, λ is in the range of 380 nm to 1000 nm excluding the wavelength of 380 nm or less, which is considered to have an adverse effect on the human body as ultraviolet rays, or the region of 1000 nm or more, which is greatly affected by absorption by other components of the human body. It is possible to select from. However, since it is more accurate to monitor changes in blood cell components, it is desirable that λ has a wavelength corresponding to green light of 500 nm to 600 nm.

[Embodiment 3]
The third embodiment will be described with reference to FIG. In the third embodiment, the biological information acquisition device 10 reselects one optical sensor 200 used for performing the main measurement every time a certain time elapses.

(Operation of biometric information acquisition device 10)
The operation of the biological information acquisition device 10 according to the third embodiment will be described with reference to FIG. FIG. 10 is a flowchart showing a flow of processing executed by each part of the biological information acquisition device 10.

As shown in FIG. 10, in the third embodiment, steps S1 to S5 are common to the first embodiment. That is, the pre-measurement unit 11 performs pre-measurement of biometric data using a plurality of optical sensors 200 that project light having different wavelengths or wavelength ranges onto the living body (S1).

Next, the comparison unit 12 compares the light intensity detected by each of the plurality of optical sensors 200 based on the biometric data output from each of the plurality of optical sensors 200 (S2).

The selection unit 13 selects one of the plurality of optical sensors 200 based on the comparison result of the light intensity (S3).

The main measurement unit 14 performs the main measurement of biometric data using one optical sensor 200 selected based on the comparison result of the light intensity (S4).

After the first step S5 in the flow, until a certain time elapses (No in S206), the measuring unit 14 repeats performing the main measurement using one selected optical sensor 200. For example, the main measurement unit 14 may repeat the main measurement shown in step S4 from 5 minutes to a few hours after the first main measurement. The period of this measurement may be the same as or longer than the measurement cycle of the optical sensor 200 (in one example, 10 Hz to 200 Hz in terms of frequency). Each time the main measurement is performed, the measurement unit 14 outputs data including information indicating the result of the main measurement of biometric data to the analysis unit 15.

The analysis unit 15 receives data including information indicating the result of the main measurement of biometric data from the main measurement unit 14. The analysis unit 15 acquires biometric information by analyzing the biometric data obtained as a result of this measurement (S5).

After a certain period of time has elapsed after the first step S5 in the flow (Yes in S206), the process returns to step S1 in the flow.

The above-mentioned fixed time is not particularly limited. However, if the fixed time is too short, the processing performed by each part of the biometric information acquisition device 10 becomes too frequent, and if the fixed time is too long, there is a concern that the accuracy of this measurement may deteriorate. In consideration of this point, it is preferable to appropriately determine the fixed time.

(Effect of this embodiment)
According to the configuration of the present embodiment, the pre-measurement unit 11 performs pre-measurement of biological data by using a plurality of optical sensors that project light having a wavelength or a wavelength range different from each other onto the living body. The comparison unit 12 compares the light intensity detected by each of the plurality of optical sensors based on the biometric data output from each of the plurality of optical sensors. The selection unit 13 selects one of the plurality of optical sensors based on the comparison result of the light intensity. The measuring unit 14 performs the main measurement of biometric data using one optical sensor selected based on the comparison result of the light intensity. The analysis unit 15 acquires biometric information by analyzing the biometric data obtained as a result of this measurement. In this way, since one optical sensor 200 used for the main measurement is selected based on the comparison result of the light intensity obtained in the previous measurement, the main measurement unit 14 has high quality from the selected optical sensor 200. Biometric data can be obtained. Therefore, the analysis unit 15 can acquire high-quality biometric information from high-quality biometric data.

Further, according to the configuration of the present embodiment, the main measurement unit 14 repeats the main measurement using one selected optical sensor 200 until a certain time elapses from the first main measurement. Then, after a certain period of time has elapsed from the first main measurement, the pre-measurement unit 11 performs the pre-measurement again. Then, based on the result of the previous measurement, one optical sensor 200 used for the main measurement is reselected. As a result, one optical sensor 200 used for the main measurement can be updated every time a certain time elapses from the first main measurement.

In addition, according to the configuration of the present embodiment, after performing the pre-measurement once using the plurality of optical sensors 200, the present invention is performed using the optical sensor 200 of one of the plurality of optical sensors 200. Since the measurement is repeated, there is an advantage that the power consumption of the biometric detection device 100 can be suppressed as compared with the configuration in which all the optical sensors 200 are always used and the main measurement is repeatedly performed.

[Embodiment 4]
The fourth embodiment will be described with reference to FIG. In the fourth embodiment, the biometric information acquisition device 10 selects one optical sensor 200 to be used for the main measurement when the S / N ratio of the biometric data obtained in the main measurement becomes a certain value or less. Redo.

(Operation of biometric information acquisition device 10)
The operation of the biological information acquisition device 10 according to the fourth embodiment will be described with reference to FIG. FIG. 11 is a flowchart showing a flow of processing executed by each part of the biological information acquisition device 10.

As shown in FIG. 11, in the fourth embodiment, steps S1 to S5 are common to the first embodiment and the third embodiment. That is, the pre-measurement unit 11 performs pre-measurement of biometric data using a plurality of optical sensors 200 that project light having different wavelengths or wavelength ranges onto the living body (S1).

Next, the comparison unit 12 compares the light intensity detected by each of the plurality of optical sensors 200 based on the biometric data output from each of the plurality of optical sensors 200 (S2).

The selection unit 13 selects one of the plurality of optical sensors 200 based on the comparison result of the light intensity (S3).

The main measurement unit 14 performs the main measurement of biometric data using one optical sensor 200 selected based on the comparison result of the light intensity (S4). The measurement unit 14 outputs data including information indicating the result of the main measurement of biometric data to the analysis unit 15.

The analysis unit 15 receives data including information indicating the result of the main measurement of biometric data from the main measurement unit 14. The analysis unit 15 acquires biometric information by analyzing the biometric data obtained as a result of this measurement (S5).

After the first step S4 in the flow, the measuring unit 14 calculates the S / N ratio of the biometric data obtained as a result of the main measurement, and holds the value as the initial value. Then, until the S / N ratio of the biometric data is reduced by 50% or more as compared with the initial value (No in S306) as compared with the S / N ratio in the first step S5 in the flow, this measuring unit. 14 performs the main measurement using one selected optical sensor 200 (S4).

For example, when the S / N ratio of the biological data obtained as a result of the main measurement is 100 in the first step S4, the main measurement unit 14 repeatedly performs the main measurement until the S / N ratio becomes less than 50. I do.

The analysis unit 15 repeats acquiring biometric information from the biometric data obtained as a result of this measurement (S5).

After the first step S5 in the flow, the S / N ratio of the biometric data obtained as a result of this measurement is reduced by 50% or more compared to the initial value (Yes in S306), and then the process returns to step S1 in the flow. ..

It should be noted that the criterion of "the S / N ratio of the biometric data is reduced by 50% or more compared to the S / N ratio at the time of the first step S5 in the flow" explained according to the flow shown in FIG. 11 is only an example. Yes, but not limited to this. However, if the reference value (50% in the above example) is too low, the poor quality of this measurement will be continued. On the other hand, if the reference value of the S / N ratio is too high, the processing performed by each part of the biometric information acquisition device 10 becomes too frequent. Therefore, in step S306 described above, it is preferable to return to step S1 in the flow when the S / N ratio of the biometric data obtained as a result of this measurement decreases by 50 to 90%.

(Effect of this embodiment)
According to the configuration of the present embodiment, the pre-measurement unit 11 performs pre-measurement of biological data by using a plurality of optical sensors that project light having a wavelength or a wavelength range different from each other onto the living body. The comparison unit 12 compares the light intensity detected by each of the plurality of optical sensors based on the biometric data output from each of the plurality of optical sensors. The selection unit 13 selects one of the plurality of optical sensors based on the comparison result of the light intensity. The measuring unit 14 performs the main measurement of biometric data using one optical sensor selected based on the comparison result of the light intensity. The analysis unit 15 acquires biometric information by analyzing the biometric data obtained as a result of this measurement. In this way, since one optical sensor 200 used for the main measurement is selected based on the comparison result of the light intensity obtained in the previous measurement, the main measurement unit 14 has high quality from the selected optical sensor 200. Biometric data can be obtained. Therefore, the biometric information acquisition device 10 can acquire high-quality biometric information from high-quality biometric data.

Further, according to the configuration of the present embodiment, the measuring unit 14 uses one selected optical sensor 200 until the S / N ratio of the biometric data obtained as a result of the measurement is reduced by 50% or more. Then, this measurement is repeated. Then, after the S / N ratio of the biometric data obtained as a result of this measurement is reduced by 50% (reference value) or more, the pre-measurement unit 11 performs the pre-measurement again. Then, based on the result of the previous measurement, one optical sensor 200 used for the main measurement is reselected. As a result, one optical sensor 200 used for this measurement can be updated every time the S / N ratio of the biometric data obtained as a result of this measurement decreases by 50% (reference value) or more.

In addition, according to the configuration of the present embodiment, after performing the pre-measurement once using the plurality of optical sensors 200, the present invention is performed using the optical sensor 200 of one of the plurality of optical sensors 200. Since the measurement is repeated, there is an advantage that the power consumption of the biometric detection device 100 can be suppressed as compared with the configuration in which all the optical sensors 200 are always used and the main measurement is repeatedly performed.

[Modification example]
In the second embodiment, the configuration in which the biological detection device 100 (100A, 100B) includes a plurality of optical sensors 200 that project light having different wavelengths or wavelength ranges onto the living body has been described. In any one modification of the second embodiment, the biometric detection device 100 (100A, 100B) may also include a plurality of optical sensors 200 having light sensitivity in the same wavelength or wavelength range.

In this modification, the pre-measurement unit 11 is a plurality of optical sensors that project light having different wavelengths or wavelength ranges to the living body among all the optical sensors 200 included in the biological detection device 100 (100A, 100B). The pre-measurement described above may be performed using only 200. Alternatively, the pre-measurement unit 11 may perform pre-measurement using all the optical sensors 200 provided in the biometric detection device 100 (100A, 100B). In either case, there is not much difference in the contents of the processing performed by the comparison unit 12 after the processing of the pre-measurement unit 11. That is, in the former case, the comparison unit 12 compares the light intensities detected by the plurality of optical sensors 200 based on the biological data output from each of the plurality of optical sensors 200 for which the pre-measurement was performed. do. On the other hand, in the latter case, the comparison unit 12 compares the light intensity detected by each of the plurality of optical sensors 200 based on the biological data output from each of the plurality of optical sensors 200. In either case, the process executed by each of the other units (selection unit 13, main measurement unit 14, analysis unit 15) of the biological information acquisition device 10 is the same as that of any one of the first to fourth embodiments.

[Embodiment 5]
In the fifth embodiment, a system 2 having a configuration different from that of the system 1 shown in FIG. 1 will be described.

FIG. 12 schematically shows the configuration of the system 2 according to the fifth embodiment. As shown in FIG. 12, the system 2 further includes an information relay device 150 in addition to the biometric information acquisition device 10 and the biometric detection device 100 (100A, 100B). The configuration and operation of the biological information acquisition device 10 according to the fifth embodiment are the same as those of the first to fourth embodiments.

The information relay device 150 is a host device for relaying communication between the biometric information acquisition device 10 and the biometric detection device 100 (100A, 100B). As the information relay device 150, for example, an information communication device such as a personal computer, a tablet, or a smartphone is used. However, the information relay device 150 may be arbitrarily determined based on the situation of the target person (living body) for measuring the biological data, the communication environment, or the like.

In the fifth embodiment, both the biological detection device 100 (100A, 100B) and the information relay device 150 can control the optical sensor 200. When the biological detection device 100 (100A, 100B) controls a plurality of optical sensors 200, the arithmetic element 400 provided in the biological detection device 100 (100A, 100B) is used. On the other hand, when the information relay device 150 controls the optical sensor 200, for example, an FPGA (field-programmable gate array) or the like is used to execute a computer program for controlling the optical sensor 200.

In the latter case, the information relay device 150 receives the biometric data from the biometric detection device 100 (100A, 100B) and transfers the biometric data to the biometric information acquisition device 10. Further, the information relay device 150 receives a control signal for controlling the biometric detection device 100 (100A, 100B) from the biometric information acquisition device 10, and based on the control signal, the biometric detection device 100 (100A, 100B). ) Is executed.

Further, even if a mobile information communication device (not shown) such as a smartphone is used to relay the communication between the biometric information acquisition device 10 or the information relay device 150 and the biometric detection device 100 (100A, 100B). good. In this case, the mobile information communication device once receives the information from the biometric detection device 100 (100A, 100B), and the biometric detection is performed from the mobile information communication device (not shown) to the biometric information acquisition device 10 or the information relay device 150. Information from the device 100 (100A, 100B) may be transferred.

(Effect of this embodiment)
According to the configuration of the present embodiment, the information relay device 150 relays the communication between the biological information acquisition device 10 and the biological detection device 100 (100A, 100B). Therefore, it is not necessary for the biometric information acquisition device 10 and the biometric detection device 100 (100A, 100B) to directly communicate with each other, so that the degree of freedom regarding the design of the system 2 is improved.

(About hardware configuration)
Each component of the biological information acquisition device 10 described in the first to fifth embodiments shows a block of functional units. Some or all of these components are realized by, for example, the information processing apparatus 900 as shown in FIG. FIG. 13 is a block diagram showing an example of the hardware configuration of the information processing apparatus 900.

As shown in FIG. 13, the information processing apparatus 900 includes the following configuration as an example.

-CPU (Central Processing Unit) 901
-ROM (Read Only Memory) 902
-RAM (Random Access Memory) 903
-Program 904 loaded into RAM 903
A storage device 905 that stores the program 904.
A drive device 907 that reads and writes the recording medium 906.
-Communication interface 908 for connecting to the communication network 909.
-I / O interface 910 for inputting / outputting data
-Bus 911 connecting each component
Each component of the biometric information acquisition device 10 described in the first to fifth embodiments is realized by the CPU 901 reading and executing the program 904 that realizes these functions. The program 904 that realizes the functions of each component is stored in, for example, a storage device 905 or ROM 902 in advance, and the CPU 901 is loaded into the RAM 903 and executed as needed. The program 904 may be supplied to the CPU 901 via the communication network 909, or may be stored in the recording medium 906 in advance, and the drive device 907 may read the program and supply the program to the CPU 901.

(Effect of this embodiment)
According to the configuration of the present embodiment, the biometric information acquisition device 10 described in the above embodiment is realized as hardware. Therefore, it is possible to obtain the same effect as the effect described in the above embodiment.

[Additional Notes]
Some or all of the above embodiments may also be described, but not limited to:

(Appendix 1)
Pre-measurement means for pre-measurement of biometric data using multiple optical sensors that project light in different wavelengths or wavelength ranges onto the living body.
A comparison means for comparing the light intensity detected by each of the plurality of optical sensors based on the biometric data output from each of the plurality of optical sensors.
A selection means for selecting one of the plurality of optical sensors based on the comparison result of the light intensity, and a selection means.
Using one optical sensor selected based on the comparison result of the light intensity, the measuring means for performing the main measurement of the biological data and the measuring means.
A biometric information acquisition device including an analysis means for acquiring biometric information by analyzing the biometric data obtained as a result of the present measurement.

(Appendix 2)
The comparison means compares the maximum value of the waveform indicated by the biometric data output from each of the plurality of optical sensors.
The biometric information acquisition device according to Appendix 1, wherein the selection means selects one optical sensor that outputs the biometric data having the largest maximum value of the waveform.

(Appendix 3)
The comparison means compares the value obtained by dividing the maximum value of the waveform indicated by the biometric data output from each of the plurality of optical sensors by the difference between the maximum value and the minimum value of the waveform.
The biometric information acquisition device according to Appendix 1, wherein the selection means selects one optical sensor that outputs the biometric data having the largest value.

(Appendix 4)
The biometric information acquisition device according to any one of Supplementary note 1 to 3, wherein each of the plurality of optical sensors projects light in a wavelength range of 380 nm to 1000 nm onto a living body.

(Appendix 5)
The biometric information acquisition device according to any one of Supplementary note 1 to 4 and the biometric information acquisition device.
A system including a biometric detection device with the plurality of optical sensors.

(Appendix 6)
The system according to Appendix 5, wherein the biological detection device is used in a state of being attached to the skin of a living body.

(Appendix 7)
In the biometric detection device
The system according to Appendix 5 or 6, wherein the plurality of optical sensors are arranged on a line on one substrate.

(Appendix 8)
In the biometric detection device
The system according to Appendix 5 or 6, wherein the plurality of optical sensors are arranged in a matrix on one substrate.

(Appendix 9)
Pre-measurement of biometric data is performed using multiple optical sensors that project light of different wavelengths or wavelengths onto the living body.
Based on the biometric data output from each of the plurality of optical sensors, the light intensities detected by the plurality of optical sensors are compared.
Based on the comparison result of the light intensity, one of the plurality of optical sensors is selected.
The main measurement of the biometric data was performed using one optical sensor selected based on the comparison result of the light intensity.
A biometric information acquisition method for acquiring biometric information by analyzing the biometric data obtained as a result of the present measurement.

(Appendix 10)
Pre-measurement of the biometric data is performed using the plurality of biosensors at regular time intervals.
Based on the biometric data output from each of the plurality of optical sensors, the light intensities detected by the plurality of optical sensors are compared.
The biometric information acquisition method according to Appendix 9, wherein one optical sensor used for the present measurement is reselected based on the comparison result of the light intensity.

(Appendix 11)
When the S / N ratio of the biometric data output from one optical sensor used for the main measurement decreases by 50% or more immediately after the start of the main measurement.
Perform the pre-measurement again and
Based on the biometric data output from each of the plurality of optical sensors, the light intensities detected by the plurality of optical sensors are compared.
The biometric information acquisition method according to Appendix 9, wherein one optical sensor used for the present measurement is reselected based on the comparison result of the light intensity.

(Appendix 12)
Pre-measurement of biometric data using multiple optical sensors that project light of different wavelengths or wavelengths onto the living body.
Comparing the light intensities detected by each of the plurality of optical sensors based on the biometric data output from each of the plurality of optical sensors, and
To select one of the plurality of optical sensors based on the comparison result of the light intensity, and to select one of the plurality of optical sensors.
Using one optical sensor selected based on the comparison result of the light intensity, the main measurement of the biometric data can be performed.
A non-temporary recording medium containing a program for causing a computer to acquire biometric information by analyzing the biometric data obtained as a result of the present measurement.

(Appendix 13)
The program
Pre-measurement of the biometric data using the plurality of biosensors at regular time intervals, and
Comparing the light intensities detected by each of the plurality of optical sensors based on the biometric data output from each of the plurality of optical sensors, and
The recording medium according to Appendix 12, wherein the computer is made to reselect one optical sensor used for the present measurement based on the comparison result of the light intensity.

(Appendix 14)
The program
When the S / N ratio of the biometric data output from one optical sensor used for the main measurement decreases by 50% or more immediately after the start of the main measurement.
Re-doing the pre-measurement and
Comparing the light intensities detected by each of the plurality of optical sensors based on the biometric data output from each of the plurality of optical sensors, and
The recording medium according to Appendix 12, wherein the computer is made to reselect one optical sensor used for the present measurement based on the comparison result of the light intensity.

1 System 2 System 10 Biometric information acquisition device 11 Front measurement unit 12 Comparison unit 13 Selection unit 14 Measurement unit 15 Analysis unit 100 Biometric detection device 200 Optical sensor 201 Light emitting element 202 Light receiving element

Claims (14)

1. Pre-measurement means for pre-measurement of biometric data using multiple optical sensors that project light in different wavelengths or wavelength ranges onto the living body.
   A comparison means for comparing the light intensity detected by each of the plurality of optical sensors based on the biometric data output from each of the plurality of optical sensors.
   A selection means for selecting one of the plurality of optical sensors based on the comparison result of the light intensity, and a selection means.
   Using one optical sensor selected based on the comparison result of the light intensity, the measuring means for performing the main measurement of the biological data and the measuring means.
   A biometric information acquisition device including an analysis means for acquiring biometric information by analyzing the biometric data obtained as a result of the present measurement.
2. The comparison means compares the maximum value of the waveform indicated by the biometric data output from each of the plurality of optical sensors.
   The biometric information acquisition device according to claim 1, wherein the selection means selects one optical sensor that outputs the biometric data having the largest maximum value of the waveform.
3. The comparison means compares the value obtained by dividing the maximum value of the waveform indicated by the biometric data output from each of the plurality of optical sensors by the difference between the maximum value and the minimum value of the waveform.
   The biometric information acquisition device according to claim 1, wherein the selection means selects one optical sensor that outputs the biometric data having the largest value.
4. The biometric information acquisition device according to any one of claims 1 to 3, wherein each of the plurality of optical sensors projects light in a wavelength range of 380 nm to 1000 nm onto a living body.
5. The biometric information acquisition device according to any one of claims 1 to 4,
   A system including a biometric detection device with the plurality of optical sensors.
6. The system according to claim 5, wherein the biological detection device is used in a state of being attached to the skin of a living body.
7. In the biometric detection device
   The system according to claim 5 or 6, wherein the plurality of optical sensors are arranged on a line on one substrate.
8. In the biometric detection device
   The system according to claim 5 or 6, wherein the plurality of optical sensors are arranged in a matrix on one substrate.
9. Pre-measurement of biometric data is performed using multiple optical sensors that project light of different wavelengths or wavelengths onto the living body.
   Based on the biometric data output from each of the plurality of optical sensors, the light intensities detected by the plurality of optical sensors are compared.
   Based on the comparison result of the light intensity, one of the plurality of optical sensors is selected.
   The main measurement of the biometric data was performed using one optical sensor selected based on the comparison result of the light intensity.
   A biometric information acquisition method for acquiring biometric information by analyzing the biometric data obtained as a result of the present measurement.
10. Pre-measurement of the biometric data is performed using the plurality of biosensors at regular time intervals.
    Based on the biometric data output from each of the plurality of optical sensors, the light intensities detected by the plurality of optical sensors are compared.
    The biometric information acquisition method according to claim 9, wherein one optical sensor used for the present measurement is reselected based on the comparison result of the light intensity.
11. When the S / N ratio of the biometric data output from one optical sensor used for the main measurement decreases by 50% or more immediately after the start of the main measurement.
    Perform the pre-measurement again and
    Based on the biometric data output from each of the plurality of optical sensors, the light intensities detected by the plurality of optical sensors are compared.
    The biometric information acquisition method according to claim 9, wherein one optical sensor used for the present measurement is reselected based on the comparison result of the light intensity.
12. Pre-measurement of biometric data using multiple optical sensors that project light of different wavelengths or wavelengths onto the living body.
    Comparing the light intensities detected by each of the plurality of optical sensors based on the biometric data output from each of the plurality of optical sensors, and
    To select one of the plurality of optical sensors based on the comparison result of the light intensity, and to select one of the plurality of optical sensors.
    Using one optical sensor selected based on the comparison result of the light intensity, the main measurement of the biometric data can be performed.
    A non-temporary recording medium containing a program for causing a computer to acquire biometric information by analyzing the biometric data obtained as a result of the present measurement.
13. The program
    Pre-measurement of the biometric data using the plurality of biosensors at regular time intervals
    Comparing the intensity of light detected by each of the plurality of optical sensors based on the biometric data output from each of the plurality of optical sensors, and
    The recording medium according to claim 12, wherein a computer is made to reselect one optical sensor used for the present measurement based on the comparison result of the light intensity.
14. The program
    When the S / N ratio of the biometric data output from one optical sensor used for the main measurement decreases by 50% or more immediately after the start of the main measurement.
    Re-doing the pre-measurement and
    Comparing the light intensities detected by each of the plurality of optical sensors based on the biometric data output from each of the plurality of optical sensors, and
    The recording medium according to claim 12, wherein a computer is made to reselect one optical sensor used for the present measurement based on the comparison result of the light intensity.

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