JP2019170543A

JP2019170543A - Measuring device and program

Info

Publication number: JP2019170543A
Application number: JP2018060738A
Authority: JP
Inventors: 友之佐伯; Tomoyuki Saeki
Original assignee: Canon Inc
Current assignee: Canon Inc
Priority date: 2018-03-27
Filing date: 2018-03-27
Publication date: 2019-10-10

Abstract

【課題】測定位置に測定対象物があるかを判定する判定処理での消費電力を抑えることができる測定装置を提供する。【解決手段】測定装置は、測定位置に向けて光を射出する光源と、測定位置にある物体からの反射光、又は、測定位置にある物体を透過した透過光を波長に応じて分光する分光手段と、複数の画素を有し、分光手段が分光した光を受光する受光手段であって、複数の画素は、それぞれ所定の波長を含む光を受光する受光手段と、を含む分光センサと、分光センサを制御して測定位置に測定対象物があるかを判定する判定処理と、判定処理において測定位置に測定対象物があると判定すると、分光センサを制御して測定対象物を測定する測定処理と、を行う制御手段と、を備えており、制御手段は、判定処理における光源の発光強度を測定処理における光源の発光強度より低くする。【選択図】図１Provided is a measurement device capable of suppressing power consumption in a determination process for determining whether a measurement target exists at a measurement position. A measurement device includes a light source that emits light toward a measurement position, and a spectroscope that separates reflected light from an object at the measurement position or transmitted light transmitted through the object at the measurement position according to a wavelength. Means, a plurality of pixels, a light receiving means for receiving the light separated by the spectral means, the plurality of pixels, a light receiving means for receiving light having a predetermined wavelength, respectively, a spectral sensor comprising: A determination process of controlling the spectroscopic sensor to determine whether there is a measurement target at the measurement position; and a measurement process of controlling the spectroscopic sensor to measure the measurement target when the determination process determines that there is a measurement target at the measurement position. And control means for performing the processing. The control means makes the light emission intensity of the light source in the determination processing lower than the light emission intensity of the light source in the measurement processing. [Selection diagram] Fig. 1

Description

本発明は、分光測色計を用いた測定装置及プログラムに関する。 The present invention relates to a measuring apparatus and program using a spectrocolorimeter.

特許文献１は、光センサを用いて脈拍を測定する測定装置を開示している。また、特許文献２は、光センサの測定対象物を判別する構成を開示している。 Patent document 1 is disclosing the measuring apparatus which measures a pulse using an optical sensor. Patent Document 2 discloses a configuration for discriminating a measurement object of an optical sensor.

ＷＯ２０１５／１６６９９０号明細書WO2015 / 166990 specification 特開２００８−２９８６１４号公報JP 2008-298614 A

特許文献１においては、生体を測定位置に置くことで光センサの受光量が変化することを利用して、生体が測定位置にあることを判定している。しかしながら、生体以外の物体が測定位置にあっても光センサの受光量は変化するため、測定対象である生体があること自体を判定することはできない。特許文献２においては、ＲＧＢセンサにより測定対象物の特徴量を検出している。しかしながら、測定対象物の色が似ている場合には、測定対象物を判別することができない。 In Patent Document 1, it is determined that the living body is at the measurement position by using the fact that the amount of light received by the optical sensor is changed by placing the living body at the measurement position. However, even if an object other than the living body is at the measurement position, the amount of light received by the optical sensor changes, and therefore it cannot be determined that there is a living body that is a measurement target. In Patent Document 2, a feature amount of a measurement object is detected by an RGB sensor. However, when the measurement object has a similar color, the measurement object cannot be identified.

また、特許文献１及び２の構成では、測定対象物を検出するまでの間、光を照射し続けるため消費電力が増大する。 Moreover, in the structure of patent document 1 and 2, since it continues irradiating light until it detects a measurement target object, power consumption increases.

本発明は、測定位置に測定対象物があるかを判定する判定処理での消費電力を抑えることができる技術、又は、高い精度で測定対象物を判別することができる技術を提供するものである。 The present invention provides a technique capable of suppressing power consumption in a determination process for determining whether a measurement object is present at a measurement position, or a technique capable of determining a measurement object with high accuracy. .

本発明の一態様によると、測定装置は、測定位置に向けて光を射出する光源と、前記測定位置にある物体からの反射光、又は、前記測定位置にある物体を透過した透過光を波長に応じて分光する分光手段と、複数の画素を有し、前記分光手段が分光した光を受光する受光手段であって、前記複数の画素は、それぞれ所定の波長を含む光を受光する前記受光手段と、を含む分光センサと、前記分光センサを制御して前記測定位置に測定対象物があるかを判定する判定処理と、前記判定処理において前記測定位置に前記測定対象物があると判定すると、前記分光センサを制御して前記測定対象物を測定する測定処理と、を行う制御手段と、を備えており、前記制御手段は、前記判定処理における前記光源の発光強度を前記測定処理における前記光源の発光強度より低くすることを特徴とする。 According to one aspect of the present invention, the measurement apparatus uses a light source that emits light toward the measurement position, reflected light from the object at the measurement position, or transmitted light that has passed through the object at the measurement position. And a light receiving means for receiving the light dispersed by the spectroscopic means, wherein each of the plurality of pixels receives light having a predetermined wavelength. And a determination process for determining whether there is a measurement object at the measurement position by controlling the spectral sensor, and determining that the measurement object is at the measurement position in the determination process. And a control unit that controls the spectroscopic sensor to measure the measurement object, and the control unit controls the emission intensity of the light source in the determination process in the measurement process. light Characterized by lower than the emission intensity.

本発明の一態様によると、測定装置は、測定位置に向けて光を射出する光源と、前記測定位置にある物体からの反射光、又は、前記測定位置にある物体を透過した透過光を波長に応じて分光する分光手段と、複数の画素を有し、前記分光手段が分光した光を受光する受光手段であって、前記複数の画素は、それぞれ所定の波長を含む光を受光する前記受光手段と、を含む分光センサと、前記分光センサを制御して前記測定位置に測定対象物があるかを判定する判定処理と、前記判定処理において前記測定位置に前記測定対象物があると判定すると、前記分光センサを制御して前記測定対象物を測定する測定処理と、を行う制御手段と、を備えており、前記制御手段は、前記測定対象物を判定するための、複数の波長の分光反射率に基づく判定情報を有し、前記判定処理において、前記複数の波長の各波長を受光する前記受光手段の画素の受光量に基づき求めた分光反射率と前記判定情報とにより、前記測定対象物が前記測定位置にあるかを判定することを特徴とする。 According to one aspect of the present invention, the measurement apparatus uses a light source that emits light toward the measurement position, reflected light from the object at the measurement position, or transmitted light that has passed through the object at the measurement position. And a light receiving means for receiving the light dispersed by the spectroscopic means, wherein each of the plurality of pixels receives light having a predetermined wavelength. And a determination process for determining whether there is a measurement object at the measurement position by controlling the spectral sensor, and determining that the measurement object is at the measurement position in the determination process. And a control means for controlling the spectroscopic sensor to measure the measurement object, and the control means performs spectroscopy of a plurality of wavelengths for determining the measurement object. Judgment based on reflectance In the determination process, the measurement object is positioned at the measurement position based on the spectral reflectance determined based on the amount of light received by the pixel of the light receiving unit that receives each wavelength of the plurality of wavelengths and the determination information. It is characterized by determining whether it exists in.

本発明の一態様によると測定位置に測定対象物があるかを判定する判定処理での消費電力を抑えることができる。また、本発明の他の態様によると、高い精度で測定対象物を判別することができる。 According to one embodiment of the present invention, power consumption in determination processing for determining whether there is a measurement object at a measurement position can be suppressed. Moreover, according to the other aspect of this invention, a measurement object can be discriminate | determined with high precision.

一実施形態による測定装置の機能ブロック図。The functional block diagram of the measuring device by one Embodiment. 一実施形態による測定対象物の測定状態を示す図。The figure which shows the measurement state of the measuring object by one Embodiment. 一実施形態による脈波信号を示す図。The figure which shows the pulse-wave signal by one Embodiment. 一実施形態による測定装置が実行する処理のフローチャート。The flowchart of the process which the measuring device by one Embodiment performs. 一実施形態による発光強度の設定を示す図。The figure which shows the setting of the light emission intensity by one Embodiment. 一実施形態による分光反射率を示す図。The figure which shows the spectral reflectance by one Embodiment. 一実施形態による判定情報を示す図。The figure which shows the determination information by one Embodiment. 一実施形態による分光反射率を示す図。The figure which shows the spectral reflectance by one Embodiment. 一実施形態による光蓄積時間の設定を示す図。The figure which shows the setting of the optical storage time by one Embodiment. 一実施形態による測定装置の外観図。1 is an external view of a measuring apparatus according to an embodiment.

以下、本発明の例示的な実施形態について図面を参照して説明する。なお、以下の実施形態は例示であり、本発明を実施形態の内容に限定するものではない。また、以下の各図においては、実施形態の説明に必要ではない構成要素については図から省略する。 Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings. In addition, the following embodiment is an illustration and does not limit this invention to the content of embodiment. In the following drawings, components that are not necessary for the description of the embodiments are omitted from the drawings.

＜第一実施形態＞
図１０は、本実施形態による測定装置１の斜視図である。なお、本実施形態では、測定装置１が脈拍を測定する装置であるものとして説明を行う。図１０（Ａ）は、シャッタ部材１０２が開口部５００を覆った状態を示し、図１０（Ｂ）は、シャッタ部材１０２が退避位置に移動されて開口部５００が露出した状態を示している。なお、開口部５００は、ハウジング１１０内部への異物の落下を防止する透明カバー４００で覆われている。ハウジング１１０には、図１０のＸ方向に沿った溝状のガイドレール１１６が設けられている。また、ガイド部材１０３のガイド部１３１は、このガイドレール１１６にはめ込まれている。これにより、ガイド部材１０３及びシャッタ部材１０２は、Ｘ方向において、ガイドレール１１６が設けられた範囲内で移動可能な様になっている。なお、ガイド部材１０３のガイド部１３１には、ハウジング１１０内においてバネが取り付けられている。そして、このバネの力により、ガイド部材１０３に外部から力を加えない状態において、ガイド部材１０３は、図１０（Ａ）に示す位置で止まる様になっている。ユーザが脈拍を測定する際、ユーザは、指によりガイド部材１０３の指受け部３２０をＸ方向に押し込み、ガイド部材１０３及びシャッタ部材１０２をＸ方向にスライドさせる。ガイド部材１０３及びシャッタ部材１０２をガイドレール１１６で制限される位置まで指で押し込むと、指の先端部分が開口部５００を覆う状態となる様に、測定装置１は構成されている。この状態において、ハウジング１１０の内部から、開口部５００を介して指に光を照射し、ハウジング１１０の内部の受光素子２０９（図２）は、その反射光を受光する。 <First embodiment>
FIG. 10 is a perspective view of the measuring apparatus 1 according to the present embodiment. In the present embodiment, description will be made assuming that the measuring device 1 is a device that measures a pulse. FIG. 10A shows a state in which the shutter member 102 covers the opening 500, and FIG. 10B shows a state in which the shutter 500 is moved to the retracted position and the opening 500 is exposed. The opening 500 is covered with a transparent cover 400 that prevents foreign matter from falling into the housing 110. The housing 110 is provided with a groove-shaped guide rail 116 along the X direction in FIG. Further, the guide portion 131 of the guide member 103 is fitted into the guide rail 116. As a result, the guide member 103 and the shutter member 102 can move within the range in which the guide rail 116 is provided in the X direction. A spring is attached to the guide portion 131 of the guide member 103 in the housing 110. The guide member 103 stops at the position shown in FIG. 10A in a state in which no force is applied to the guide member 103 from the outside by the force of the spring. When the user measures the pulse, the user pushes the finger receiving portion 320 of the guide member 103 in the X direction with a finger, and slides the guide member 103 and the shutter member 102 in the X direction. The measuring apparatus 1 is configured such that when the guide member 103 and the shutter member 102 are pushed by a finger to a position limited by the guide rail 116, the tip portion of the finger covers the opening 500. In this state, the finger is irradiated with light from the inside of the housing 110 through the opening 500, and the light receiving element 209 (FIG. 2) inside the housing 110 receives the reflected light.

また、ハウジング１１０には、軸受部１１９により回転可能に保持される押圧部材１０５と押圧バネ１５１が設けられている。押圧バネ１５１は、押圧部材１０５に対して、開口部５００に向かう力を加える。また、押圧部材１０５には押圧リブ１５２が設けられ、シャッタ部材１０２には被押圧リブ１２３が設けられる。図１０（Ａ）の状態では、押圧リブ１５２が被押圧リブ１２３に当接し、これにより、シャッタ部材１０２はハウジング１１０の上面に対し付勢される。また、シャッタ部材１０２の開口部５００側の面には、白色基準板が設けられる。この白色基準板は、ハウジング１１０内部の光源２０６（図２）や受光素子２０９等のキャリブレーションに使用される。押圧部材１０５は、測定時、測定対象の指先を開口部５００の位置で安定させる役割も有する。 The housing 110 is provided with a pressing member 105 and a pressing spring 151 that are rotatably held by the bearing portion 119. The pressing spring 151 applies a force toward the opening 500 to the pressing member 105. The pressing member 105 is provided with a pressing rib 152, and the shutter member 102 is provided with a pressed rib 123. In the state of FIG. 10A, the pressing rib 152 contacts the pressed rib 123, and thereby the shutter member 102 is urged against the upper surface of the housing 110. A white reference plate is provided on the surface of the shutter member 102 on the opening 500 side. This white reference plate is used for calibration of the light source 206 (FIG. 2) and the light receiving element 209 inside the housing 110. The pressing member 105 also has a role of stabilizing the measurement target fingertip at the position of the opening 500 at the time of measurement.

図１は、測定装置１と、測定装置１を制御する外部機器３０の構成を示している。制御部２０１は、ＣＰＵを有し、測定装置１の全体を制御する。記憶部２０２は、ＲＯＭやＲＡＭであり、制御部２０１は、記憶部２０２に格納されている制御プログラムを実行して測定装置１を制御する。また、記憶部２０２には、制御部２０１がその制御において使用するデータや、一時的に記憶すべきデータも記憶される。通信部２０３は、外部機器３０と有線又は無線により通信する。通知部２０４は、ＬＥＤやブザー等、ユーザに測定装置１の動作状態を通知するためのデバイスである。操作部２０５は、プッシュスイッチなど、測定装置１のユーザが操作可能なデバイスである。 FIG. 1 shows the configuration of a measuring apparatus 1 and an external device 30 that controls the measuring apparatus 1. The control unit 201 has a CPU and controls the entire measuring apparatus 1. The storage unit 202 is a ROM or a RAM, and the control unit 201 controls the measuring apparatus 1 by executing a control program stored in the storage unit 202. The storage unit 202 also stores data used by the control unit 201 in its control and data to be temporarily stored. The communication unit 203 communicates with the external device 30 by wire or wireless. The notification unit 204 is a device for notifying the user of the operation state of the measurement apparatus 1 such as an LED or a buzzer. The operation unit 205 is a device that can be operated by the user of the measurement apparatus 1, such as a push switch.

光源２０６は、白色ＬＥＤであり、ＤＡ変換部２０７が出力する電圧に応じた強度の光を射出する。分光部２０８は、プリズムや回折格子等であり、受光する光を波長に応じて分散させ、波長分散光として出力する。受光素子２０９は、例えば、複数の画素を有するラインセンサであり、各画素は、分光部２０８が出力する波長分散光の所定の波長を含む光を受光し、受光量に応じた電圧を出力する。例えば、各画素は、１０ｎｍの波長幅の光を受光する様に測定装置１は構成されている。なお、分光部２０８及び受光素子２０９は分光測色計（分光センサ）を構成している。或いは、光源２０６、分光部２０８及び受光素子２０９が分光測色計を構成している。ＡＤ変換部２１０は、受光素子２０９が出力する各画素の受光量を示す電圧をデジタル値に変換する。光蓄積時間設定部２１１は、受光素子２０９が、受光量を示す電圧を出力する前に光電流を蓄積する時間、つまり受光素子２０９の受光時間を設定する。測定装置１の上記各機能ブロックは、バス２１３で接続されており、相互に通信可能となっている。二次電池２１２は、測定装置１を駆動するための電源であり、例えばリチウンイオン電池を利用することができる。なお、測定装置１と外部機器３０を有線で接続する場合、外部機器３０が測定装置１の動作電力を供給する構成とすることもできる。この場合、二次電池２１２は省略される。 The light source 206 is a white LED, and emits light having an intensity corresponding to the voltage output from the DA converter 207. The spectroscopic unit 208 is a prism, a diffraction grating, or the like, disperses the received light according to the wavelength, and outputs the dispersed light. The light receiving element 209 is, for example, a line sensor having a plurality of pixels. Each pixel receives light including a predetermined wavelength of chromatic dispersion light output from the spectroscopic unit 208 and outputs a voltage corresponding to the amount of received light. . For example, the measuring apparatus 1 is configured so that each pixel receives light having a wavelength width of 10 nm. The spectroscopic unit 208 and the light receiving element 209 constitute a spectrocolorimeter (spectral sensor). Alternatively, the light source 206, the spectroscopic unit 208, and the light receiving element 209 constitute a spectrocolorimeter. The AD conversion unit 210 converts a voltage indicating the amount of light received by each pixel output from the light receiving element 209 into a digital value. The light accumulation time setting unit 211 sets a time during which the light receiving element 209 accumulates a photocurrent before outputting a voltage indicating the amount of received light, that is, a light receiving time of the light receiving element 209. The functional blocks of the measuring apparatus 1 are connected via a bus 213 and can communicate with each other. The secondary battery 212 is a power source for driving the measuring apparatus 1, and for example, a lithium ion battery can be used. Note that when the measurement apparatus 1 and the external device 30 are connected by wire, the external device 30 may supply the operating power of the measurement apparatus 1. In this case, the secondary battery 212 is omitted.

外部機器３０の制御部３０１は、ＣＰＵを有し、外部機器３０の全体を制御する。記憶部３０２は、ＲＯＭやＲＡＭであり、制御部３０１は、記憶部３０２に格納されている制御プログラムを実行して外部機器３０を制御する。また、記憶部３０２には、制御部３０１がその制御において使用するデータや、一時的に記憶すべきデータも記憶される。通信部３０３は、測定装置１と有線又は無線により通信する。表示部３０４は、ディスプレイ等の表示装置であり、測定情報や測定装置１の状態を表示する。操作部３０５は、キーボード、マウス、タッチパネルディスプレイ等であり、ユーザは操作部３０５を介して外部機器３０を操作する。外部機器３０の各機能ブロックは、バス３０６で接続されており、相互に通信可能となっている。外部機器３０は、専用の装置として構成することも、ＰＣ、タブレット、スマートフォン等の装置を利用して構成することもできる。 The control unit 301 of the external device 30 has a CPU and controls the entire external device 30. The storage unit 302 is a ROM or a RAM, and the control unit 301 controls the external device 30 by executing a control program stored in the storage unit 302. The storage unit 302 also stores data used by the control unit 301 in its control and data to be temporarily stored. The communication unit 303 communicates with the measurement device 1 by wire or wireless. The display unit 304 is a display device such as a display, and displays measurement information and the state of the measurement device 1. The operation unit 305 is a keyboard, a mouse, a touch panel display, or the like, and the user operates the external device 30 via the operation unit 305. The functional blocks of the external device 30 are connected by a bus 306 and can communicate with each other. The external device 30 can be configured as a dedicated device, or can be configured using a device such as a PC, a tablet, or a smartphone.

図２は、脈拍を測定している状態を示している。測定対象物である指９００を、測定位置である開口部５００（図１０）に置き、光源２０６から光９０１を射出する。受光素子２０９は、指９００内部で反射した反射光９０２を、分光部２０８を介して受光する。なお、本実施形態では、受光素子２０９の、波長５９０ｎｍの光を受光する画素の受光量に基づき脈拍を測定する。図３は、波長５９０ｎｍの光を受光する画素の受光量に基づき求めた分光反射率の時間変化を示している。血液中のヘモグロビンは、波長５９０ｎｍ付近の光を吸光するが、この吸光量は、脈拍による指９００内部の血管内の血流量の増減により変化する。したがって、脈拍に応じて波長５９０ｎｍの分光反射率が変化し、図３に示す脈波信号６００が得られる。そして、単位時間当たりの脈波信号６００の周期数から脈拍を測定することができる。 FIG. 2 shows a state in which the pulse is being measured. A finger 900 as a measurement object is placed in the opening 500 (FIG. 10) as a measurement position, and light 901 is emitted from the light source 206. The light receiving element 209 receives the reflected light 902 reflected inside the finger 900 via the spectroscopic unit 208. In the present embodiment, the pulse is measured based on the amount of light received by the light receiving element 209 of a pixel that receives light having a wavelength of 590 nm. FIG. 3 shows a temporal change in spectral reflectance obtained based on the amount of light received by a pixel that receives light having a wavelength of 590 nm. Hemoglobin in the blood absorbs light having a wavelength of around 590 nm, and the amount of light absorption varies depending on the increase or decrease in blood flow in the blood vessel inside the finger 900 due to the pulse. Therefore, the spectral reflectance at a wavelength of 590 nm changes according to the pulse, and the pulse wave signal 600 shown in FIG. 3 is obtained. Then, the pulse can be measured from the number of periods of the pulse wave signal 600 per unit time.

図４は、本実施形態による測定装置１が実行する処理のフローチャートである。Ｓ４００で、測定装置１の操作部２０５又は外部機器３０の操作部３０５を介して測定開始が指示されると、Ｓ４０１で、制御部２０１は、ＤＡ変換部２０７の出力電圧を設定して光源２０６を判定用強度で発光させる。なお、判定用強度は、脈拍測定時に使用する測定用強度より低い強度であり、予め測定装置１に設定されている。図５は、時刻ｔ０で測定開始が指示され、判定用強度Ｐ０で光源２０６が発光した状態を示している。制御部２０１は、Ｓ４０２で、ＡＤ変換部２１０を介して、所定の画素の受光量を取得する。 FIG. 4 is a flowchart of processing executed by the measuring apparatus 1 according to the present embodiment. When the start of measurement is instructed via the operation unit 205 of the measurement apparatus 1 or the operation unit 305 of the external device 30 in S400, the control unit 201 sets the output voltage of the DA conversion unit 207 and sets the light source 206 in S401. Is made to emit light at the intensity for determination. The determination strength is lower than the measurement strength used at the time of pulse measurement, and is set in the measurement apparatus 1 in advance. FIG. 5 shows a state in which the start of measurement is instructed at time t0 and the light source 206 emits light at the determination intensity P0. In step S <b> 402, the control unit 201 acquires the received light amount of a predetermined pixel via the AD conversion unit 210.

制御部２０１は、Ｓ４０３で判定処理を行う。図６（Ａ）は、測定対象物である指９００からの反射光を受光素子２０９が受光した場合の各波長の分光反射率を示している。指９００内の血管を流れる血液のヘモグロビンの光吸収特性から、図６（Ａ）に示す様に、波長５５０ｎｍ〜５７０ｎｍ付近の分光反射率が低くなる。また、波長５６０ｎｍの分光反射率は波長５５０ｎｍ及び５７０ｎｍの分光反射率よりも高くなる。 The control unit 201 performs a determination process in S403. FIG. 6A shows the spectral reflectance of each wavelength when the light receiving element 209 receives the reflected light from the finger 900 that is the measurement object. From the light absorption characteristic of hemoglobin of blood flowing through the blood vessel in the finger 900, the spectral reflectance near the wavelength of 550 nm to 570 nm is low as shown in FIG. The spectral reflectance at a wavelength of 560 nm is higher than the spectral reflectances at wavelengths of 550 nm and 570 nm.

一方、図６（Ｂ）は肌色のインクで印刷した用紙からの反射光を受光素子２０９が受光した場合の分光反射率を示している。インクにはヘモグロビンが含まれていないため、分光反射率は、図６（Ａ）に示す指９００のものとはまったく異なる特徴を示す。記憶部２０２には、予め生成した測定対象とする生体、本例では、指９００の分光反射率を示す判定情報が格納されている。なお、判定情報は、図６（Ａ）に示す様な、総ての波長における分光反射率を示すものとすることもできるが、特徴的な一部の波長における分光反射率を示すものであって良い。本実施形態において、判定情報は、図６（Ａ）の点線で示す、波長５１０ｎｍ、波長５５０ｎｍ、波長５６０ｎｍ、波長５７０ｎｍ、波長５９０ｎｍ及び波長６２０ｎｍの計６つの波長の分光反射率を示すものとする。この場合、制御部２０１は、Ｓ４０２で、ＡＤ変換部２１０を介して、これら６つの波長を含む光を受光する計６つの画素から受光量を取得する。そして、制御部２０１は、Ｓ４０３の判定処理において、６つの画素から取得した受光量から求められる分光反射率と、予め記憶部２０２に格納した判定情報の対応する波長の分光反射率とを比較する。例えば、制御部２０１は、取得した受光量から求めた分光反射率と、予め格納した分光反射率との差の絶対値又は差の二乗の合計値を求める。そして、制御部２０１は、それらの合計値が閾値以内であると、測定位置には測定対象物、本例では指９００があると判定する。一方、合計値が閾値より大きいと、測定位置には測定対象物がないと判定する。なお、測定位置に測定対象物がないとは、測定位置には物体がない状態と、測定位置には測定対象物以外の物体がある状態を含む。 On the other hand, FIG. 6B shows the spectral reflectance when the light receiving element 209 receives reflected light from the paper printed with flesh-colored ink. Since the ink does not contain hemoglobin, the spectral reflectance shows completely different characteristics from those of the finger 900 shown in FIG. The storage unit 202 stores determination information indicating the spectral reflectance of the living body to be measured, which is generated in advance, in this example, the finger 900 in this example. The determination information can also indicate spectral reflectances at all wavelengths as shown in FIG. 6A, but it indicates spectral reflectances at some characteristic wavelengths. Good. In the present embodiment, the determination information indicates the spectral reflectances of a total of six wavelengths of wavelength 510 nm, wavelength 550 nm, wavelength 560 nm, wavelength 570 nm, wavelength 590 nm, and wavelength 620 nm, which are indicated by dotted lines in FIG. . In this case, the control unit 201 acquires the received light amount from a total of six pixels that receive light including these six wavelengths via the AD conversion unit 210 in S402. Then, in the determination process of S403, the control unit 201 compares the spectral reflectance obtained from the received light amounts acquired from the six pixels with the spectral reflectance of the wavelength corresponding to the determination information stored in the storage unit 202 in advance. . For example, the control unit 201 obtains the absolute value of the difference between the spectral reflectance obtained from the acquired amount of received light and the spectral reflectance stored in advance or the sum of squares of the differences. Then, if the total value is within the threshold value, the control unit 201 determines that there is a measurement object at the measurement position, in this example, the finger 900. On the other hand, if the total value is larger than the threshold value, it is determined that there is no measurement object at the measurement position. Note that the absence of the measurement object at the measurement position includes a state where there is no object at the measurement position and a state where there is an object other than the measurement object at the measurement position.

制御部２０１は、Ｓ４０３の判定処理の結果からＳ４０４において測定開始可能であるか否かを判定する。具体的には、測定位置に測定対象物があると判定すると、制御部２０１は、測定開始可能と判定し、そうではないと、制御部２０１は、測定開始可能ではないと判定する。測定開始可能ではないと判定した場合、制御部２０１は、Ｓ４０９で、測定開始の指示を受けてから所定期間が経過しているかを判定する。所定期間が経過していないと、制御部２０１は、Ｓ４０２から処理を繰り返す。一方、所定期間が経過していると、制御部２０１は、Ｓ４０７で、光源２０６の発光を停止させ、Ｓ４０８で、外部機器３０に結果を送信する。なお、この場合には、制御部２０１は、測定ができなかったとの結果、及び／又は、測定対象物を検出できなかったとの結果を送信する。外部機器３０は、制御部２０１から結果を受信すると、例えば、測定できなかったことや、測定対象物が測定位置にないことを表示部３０４に表示する。また、制御部２０１は、通知部２０４のＬＥＤを発光させたり、ブザー音を鳴らせたりすることで、測定できなかったことをユーザに通知することができる。 The control unit 201 determines whether or not measurement can be started in S404 from the result of the determination process in S403. Specifically, when it is determined that there is a measurement object at the measurement position, the control unit 201 determines that measurement can be started, and otherwise, the control unit 201 determines that measurement cannot be started. If it is determined that measurement cannot be started, the control unit 201 determines in step S409 whether a predetermined period has elapsed since receiving the measurement start instruction. If the predetermined period has not elapsed, the control unit 201 repeats the process from S402. On the other hand, if the predetermined period has elapsed, the control unit 201 stops the light emission of the light source 206 in S407, and transmits the result to the external device 30 in S408. In this case, the control unit 201 transmits a result that the measurement could not be performed and / or a result that the measurement object could not be detected. When the external device 30 receives the result from the control unit 201, for example, the external device 30 displays on the display unit 304 that measurement could not be performed or that the measurement target is not at the measurement position. Further, the control unit 201 can notify the user that measurement could not be performed by causing the LED of the notification unit 204 to emit light or sounding a buzzer sound.

また、Ｓ４０４で測定開始可能と判定すると、制御部２０１は、Ｓ４０５で光源２０６を測定用強度で発光させる。なお、最適な発光強度は、測定毎に異なるため、本実施形態において、制御部２０１は、ＡＤ変換部２１０に入力される、測定に使用する画素の受光量を示す電圧が適切な値となるまで、光源２０６の発光強度を徐々に強くして測定用強度を決定する。図５は、時刻ｔ１から光源２０６の発光強度を増加させ、時刻ｔ２において、適切な発光強度Ｐ１となった状態を示している。 If it is determined in step S404 that measurement can be started, the control unit 201 causes the light source 206 to emit light with measurement intensity in step S405. Note that, since the optimum light emission intensity differs for each measurement, in the present embodiment, the control unit 201 has an appropriate value for the voltage indicating the amount of light received by the pixels used for measurement, which is input to the AD conversion unit 210. Until then, the emission intensity of the light source 206 is gradually increased to determine the measurement intensity. FIG. 5 shows a state in which the light emission intensity of the light source 206 is increased from time t1, and the light emission intensity P1 becomes appropriate at time t2.

適切な発光強度となると、制御部２０１は、Ｓ４０６で測定処理を行う。本実施形態において、制御部２０１は、波長５９０ｎｍの反射光を受光する画素の受光量を順次取得する。なお、測定時間は、予め設定された時間とすることができる。或いは、外部機器３０が測定時間を指定する構成とすることができる。測定時間が経過すると、Ｓ４０７で、制御部２０１は、光源２０６の発光を停止させ、Ｓ４０８で、測定結果を外部機器３０に送信する。なお、この場合の測定結果は、例えば、波長５９０ｎｍの反射光の受光量を時系列で示すもの、つまり、図３に示す脈波信号６００そのものとすることができる。また、測定結果は、図３の脈波信号６００の各周期、または、測定した各周期の平均値とすることもできる。外部機器３０は、受信した測定結果に基づき脈拍を判定して表示部３０４に表示する。図５は、時刻ｔ３で測定が終了し、光源２０６の発光を停止させた状態も示している。 When the light emission intensity is appropriate, the control unit 201 performs a measurement process in S406. In the present embodiment, the control unit 201 sequentially acquires the amount of light received by pixels that receive reflected light having a wavelength of 590 nm. The measurement time can be set in advance. Alternatively, the external device 30 can be configured to specify the measurement time. When the measurement time has elapsed, the control unit 201 stops the light emission of the light source 206 in S407, and transmits the measurement result to the external device 30 in S408. Note that the measurement result in this case can be, for example, the amount of reflected light having a wavelength of 590 nm received in time series, that is, the pulse wave signal 600 itself shown in FIG. Further, the measurement result can be each period of the pulse wave signal 600 of FIG. 3 or an average value of each measured period. The external device 30 determines the pulse based on the received measurement result and displays it on the display unit 304. FIG. 5 also shows a state in which the measurement is completed at time t3 and the light emission of the light source 206 is stopped.

以上、所定波長の分光反射率に基づき測定位置に測定対象物があるかを判別する。したがって、精度良く測定対象物が測定位置にあることを判別することができる。また、測定対象物が測定位置にあるかを判定する判定処理においては、測定処理より低い強度で光源２０６を発光させる。よって、判定処理での消費電力を抑えることができる。なお、本実施形態の測定装置１は、シャッタ部材１０２が開口部５００を覆う構成であるが、シャッタ部材１０２を設けないことも可能である。この場合において、光源２０６が可視光を射出するものであると、開口部５００に何らかのものが置かれるまで、可視光が外部に漏れ、例えば、眩しさによりユーザを不快にさせる。しかしながら、本実施形態では、判定処理中は、低い強度で光源２０６を発光させるため、ユーザに強い光を見させない様にすることができる。 As described above, it is determined whether there is a measurement object at the measurement position based on the spectral reflectance of the predetermined wavelength. Therefore, it is possible to accurately determine that the measurement object is at the measurement position. In the determination process for determining whether the measurement object is at the measurement position, the light source 206 is caused to emit light with a lower intensity than that of the measurement process. Therefore, power consumption in the determination process can be suppressed. In the measurement apparatus 1 of the present embodiment, the shutter member 102 covers the opening 500, but the shutter member 102 may not be provided. In this case, if the light source 206 emits visible light, the visible light leaks to the outside until something is placed in the opening 500, for example, discomforting the user due to glare. However, in this embodiment, since the light source 206 emits light with low intensity during the determination process, it is possible to prevent the user from seeing strong light.

＜第二実施形態＞
続いて、第二実施形態について第一実施形態との相違点を中心に説明する。本実施形態において、測定装置１は、脈拍測定に加えて、任意の対象物の測定を行う。なお、任意の対象物は、生体以外の物体であっても良く、その測定内容は、分光測色計を使用して測定できる任意の内容とする。まず、本実施形態における指９００の判定について説明する。図７（Ａ）は、指９００を判定するための判定情報の一例を示している。図７（Ａ）において、Ｒｅｆ（Ｘ）は波長Ｘｎｍの分光反射率を表している。また、Ｒｅｆ（５６０）＞Ｒｅｆ（５５０）との判定式は、波長５６０ｎｍの分光反射率が波長５５０ｎｍの分光反射率よりも大きい場合に真と判定することを示している。この様に、本実施形態では、所定の波長のうちの２つの波長の分光反射率の大小関係を示す１つ以上の判定式を有する判定情報を使用する。 <Second embodiment>
Next, the second embodiment will be described focusing on the differences from the first embodiment. In the present embodiment, the measuring device 1 measures an arbitrary object in addition to the pulse measurement. The arbitrary object may be an object other than a living body, and the measurement content is arbitrary content that can be measured using a spectrocolorimeter. First, determination of the finger 900 in this embodiment will be described. FIG. 7A shows an example of determination information for determining the finger 900. In FIG. 7A, Ref (X) represents the spectral reflectance at the wavelength Xnm. Further, the determination formula of Ref (560)> Ref (550) indicates that the determination is true when the spectral reflectance at the wavelength of 560 nm is larger than the spectral reflectance at the wavelength of 550 nm. As described above, in the present embodiment, determination information having one or more determination expressions indicating the magnitude relationship between the spectral reflectances of two wavelengths among the predetermined wavelengths is used.

制御部２０１は、図４のＳ４０２において、図７（Ａ）に示す判定情報で使用されている波長５１０ｎｍ、波長５６０ｎｍ、波長５７０ｎｍ及び波長５９０ｎｍを受光する画素から受光量を取得し、それぞれの分光反射率を求める。例えば、図６（Ａ）に示す様に、測定位置にあるのが指９００であると、参照符号７０１で示す様に４つの判定式は総て真となる。この場合、制御部２０１は、測定位置にあるのが指９００であると判定する。また、測定位置にあるのが図８に示す分光反射特性を示す物体又は生体であると、参照符号７０２で示す様に２番目から４番目の判定式は真であるが、１番目の判定式は偽となる。したがって、この場合、制御部２０１は、測定位置には指９００がないと判定する。 In S402 of FIG. 4, the control unit 201 acquires the received light amount from the pixels that receive the wavelength 510 nm, the wavelength 560 nm, the wavelength 570 nm, and the wavelength 590 nm used in the determination information illustrated in FIG. Obtain the reflectance. For example, as shown in FIG. 6A, if the finger 900 is at the measurement position, all four determination formulas are true as indicated by reference numeral 701. In this case, the control unit 201 determines that the finger 900 is at the measurement position. Further, when the object at the measurement position is an object or a living body having the spectral reflection characteristics shown in FIG. 8, the second to fourth determination formulas are true as indicated by reference numeral 702, but the first determination formula is used. Is false. Therefore, in this case, the control unit 201 determines that there is no finger 900 at the measurement position.

一方、図７（Ｂ）は、図８に示す分光反射特性を有する物体又は生体を測定するための判定条件の一例を示している。この場合、制御部２０１は、図４のＳ４０２において、図７（Ｂ）に示す判定情報で使用されている波長４７０ｎｍ、波長５６０ｎｍ、波長５７０ｎｍ、波長５８０ｎｍ及び波長６００ｎｍを受光する画素から受光量を取得し、それぞれの分光反射率を求める。例えば、図６（Ａ）に示す様に、測定位置にあるのが指９００であると、参照符号７０３で示す様に１番目、３番目及び４番目の判定式は真であるが、２番目の判定式は偽となる。したがって、この場合、制御部２０１は、測定位置には測定対象物がないと判定する。また、測定位置にあるのが図８に示す分光反射特性を示す測定対象物であると、参照符号７０４で示す様に総ての判定式は真になる。この場合、制御部２０１は、測定位置に正しい測定対象物があるものとして測定処理を開始する。 On the other hand, FIG. 7B shows an example of determination conditions for measuring an object or a living body having the spectral reflection characteristics shown in FIG. In this case, the control unit 201 determines the amount of light received from the pixels that receive the wavelength 470 nm, the wavelength 560 nm, the wavelength 570 nm, the wavelength 580 nm, and the wavelength 600 nm used in the determination information illustrated in FIG. Acquire and obtain each spectral reflectance. For example, as shown in FIG. 6A, if the finger 900 is at the measurement position, the first, third, and fourth determination formulas are true as indicated by reference numeral 703, but the second The determination formula is false. Therefore, in this case, the control unit 201 determines that there is no measurement object at the measurement position. Further, if the measurement object is the measurement object having the spectral reflection characteristics shown in FIG. 8, all the determination formulas are true as indicated by reference numeral 704. In this case, the control unit 201 starts the measurement process assuming that there is a correct measurement object at the measurement position.

なお、図７（Ａ）及び７（Ｂ）に示す各測定対象物に対応する判定情報は、予め記憶部２０２に格納しておく構成とすることができる。この場合、例えば、外部機器３０は、測定開始指示においてどの判定情報を使用するかを測定装置１に通知する。或いは、ユーザが、測定装置１の操作部２０５を操作して、どの判定情報を使用するかを測定装置１に通知する。また、外部機器３０が、１つ以上の判定情報を有し、測定開始指示において、測定する測定対象物に対応する判定情報を外部機器３０が測定装置１に送信する構成とすることもできる。 Note that the determination information corresponding to each measurement object illustrated in FIGS. 7A and 7B may be stored in the storage unit 202 in advance. In this case, for example, the external device 30 notifies the measurement apparatus 1 which determination information is used in the measurement start instruction. Alternatively, the user operates the operation unit 205 of the measurement apparatus 1 to notify the measurement apparatus 1 which determination information is to be used. In addition, the external device 30 may have one or more pieces of determination information, and the external device 30 may transmit determination information corresponding to the measurement object to be measured to the measurement apparatus 1 in the measurement start instruction.

以上、測定対象に応じた判定情報を用いることで、複数の測定対象物を判別して測定を開始することができる。 As described above, by using the determination information corresponding to the measurement object, it is possible to determine a plurality of measurement objects and start measurement.

＜その他の実施形態＞
上記各実施形態において、判定処理中は光源２０６を測定処理中よりも低い強度で発光させていた。しかしながら、発光強度の低下により受光素子２０９の受光量が減少することで、判定処理が困難となる可能性がある。そのため、例えば、図９に示す様に、制御部２０１は、判定処理中は、測定処理中よりも受光素子２０９の光蓄積時間を長く設定する構成とすることができる。これにより、光源２０６の発光強度を低くしても、受光素子２０９は、十分な光量を得ることができる。なお、光蓄積時間に代えて、或いは、加えて、判定処理中は、測定処理中よりも受光素子２０９のゲイン設定を高くする構成とすることもできる。 <Other embodiments>
In each of the above embodiments, the light source 206 emits light with a lower intensity during the determination process than during the measurement process. However, since the amount of light received by the light receiving element 209 decreases due to a decrease in light emission intensity, the determination process may be difficult. Therefore, for example, as illustrated in FIG. 9, the control unit 201 can be configured to set the light accumulation time of the light receiving element 209 longer during the determination process than during the measurement process. Thereby, even if the light emission intensity of the light source 206 is lowered, the light receiving element 209 can obtain a sufficient amount of light. In addition, instead of or in addition to the light accumulation time, the gain setting of the light receiving element 209 may be set higher during the determination process than during the measurement process.

また、上記実施形態においては、指９００を測定対象物として脈拍を測定していた。しかしながら、本実施形態による測定装置１は、指９００を測定対象物として脈拍以外の生体情報を測定することができる。例えば、測定装置１は、脈波信号６００を２回微分した信号に基づき血管の硬化度合いを測定することができる。また、測定装置１は、６６０ｎｍの波長を受光する画素と、約９４０ｎｍの波長を受光する画素の受光量と、に基づき経皮的動脈血酸素飽和度（ＳｐＯ２）を測定することができる。さらに、測定装置１は、６２０ｎｍ、６６０ｎｍ、８１０ｎｍ及び９４０ｎｍの波長を受光する画素の受光量に基づきカルボキシヘモグロビン濃度（ＳｐＣＯ）を測定することができる。 In the above embodiment, the pulse is measured using the finger 900 as a measurement object. However, the measuring apparatus 1 according to the present embodiment can measure biological information other than the pulse using the finger 900 as a measurement object. For example, the measuring apparatus 1 can measure the degree of hardening of the blood vessel based on a signal obtained by differentiating the pulse wave signal 600 twice. The measuring apparatus 1 can measure the percutaneous arterial oxygen saturation (SpO2) based on the amount of light received by a pixel receiving a wavelength of 660 nm and the amount of light received by a pixel receiving a wavelength of about 940 nm. Furthermore, the measuring apparatus 1 can measure the carboxyhemoglobin concentration (SpCO) based on the amount of light received by pixels that receive wavelengths of 620 nm, 660 nm, 810 nm, and 940 nm.

さらに、本発明は、分光測色計を使用する任意の測定装置に適用でき、例えば、その外観や、機械的構造は、図１０に示すものに限定されない。また、上記実施形態において、受光素子２０９は反射光を受光するものであったが、透過光を受光する構成とすることもできる。 Furthermore, the present invention can be applied to any measuring apparatus that uses a spectrocolorimeter. For example, the appearance and mechanical structure are not limited to those shown in FIG. In the above embodiment, the light receiving element 209 receives reflected light. However, the light receiving element 209 may be configured to receive transmitted light.

また、測定装置１は、測定処理中に測定対象物を検出しなくなると、光源２０６の発光強度を低くして判定処理を行う構成とすることもできる。例えば、制御部２０１は、測定処理において、波長５９０ｎｍの光を受光する画素といった、測定に使用する所定の画素の受光量を順次取得する。ここで、測定処理中に測定対象物が測定位置から外れると、この所定の画素の受光量は大きく変化する。具体的には、反射光を受光する場合には、画素の受光量は小さくなり、透過光を受光する場合には、画素の受光量は大きくなる。したがって、反射光を受光する場合、制御部２０１は、測定処理中に、測定に使用する画素の受光量が第１閾値以下となると、測定対象物が測定位置にないと判定することができる。また、透過光を受光する場合、制御部２０１は、測定処理中に、測定に使用する画素の受光量が第２閾値以上となると、測定対象物が測定位置にないと判定することができる。そして、制御部２０１は、測定対象物が測定位置にないと判定すると、光源２０６の発光強度を低くして判定処理を開始することができる。言い換えると、制御部２０１は、測定対象物が測定位置にないと判定すると、図４のＳ４０１から処理を開始する構成とすることができる。 Further, the measuring apparatus 1 may be configured to perform the determination process by reducing the light emission intensity of the light source 206 when the measurement object is not detected during the measurement process. For example, in the measurement process, the control unit 201 sequentially acquires the received light amount of a predetermined pixel used for measurement, such as a pixel that receives light with a wavelength of 590 nm. Here, if the measurement object moves out of the measurement position during the measurement process, the amount of light received by the predetermined pixel changes greatly. Specifically, when the reflected light is received, the amount of light received by the pixel is small, and when the transmitted light is received, the amount of light received by the pixel is large. Therefore, when receiving the reflected light, the control unit 201 can determine that the measurement object is not at the measurement position when the amount of light received by the pixels used for measurement is equal to or less than the first threshold value during the measurement process. When receiving transmitted light, the control unit 201 can determine that the measurement object is not at the measurement position when the amount of light received by the pixels used for measurement is equal to or greater than the second threshold value during the measurement process. If the control unit 201 determines that the measurement target is not at the measurement position, the control unit 201 can reduce the light emission intensity of the light source 206 and start the determination process. In other words, when the control unit 201 determines that the measurement target is not at the measurement position, the control unit 201 can start the process from S401 in FIG.

なお、受光素子２０９の各画素は、測定処理中においても光を受光し、ＡＤ変換部２０９は、各画素が出力する受光量を示す電圧をデジタル値に変換している。したがって、制御部２０１は、測定処理中、所定期間毎に判定処理で使用する画素の受光量を取得し、判定情報に基づき測定対象物が測定位置にあるかを判定する構成とすることもできる。 Note that each pixel of the light receiving element 209 receives light even during the measurement process, and the AD conversion unit 209 converts the voltage indicating the amount of received light output from each pixel into a digital value. Therefore, the control unit 201 can also be configured to acquire the amount of light received by the pixels used in the determination process every predetermined period during the measurement process and determine whether the measurement object is at the measurement position based on the determination information. .

本発明は、上述の実施形態の１以上の機能を実現するプログラムを、ネットワーク又は記憶媒体を介してシステム又は装置に供給し、そのシステム又は装置のコンピュータにおける１つ以上のプロセッサーがプログラムを読出し実行する処理でも実現可能である。また、１以上の機能を実現する回路（例えば、ＡＳＩＣ）によっても実現可能である。 The present invention supplies a program that realizes one or more functions of the above-described embodiments to a system or apparatus via a network or a storage medium, and one or more processors in a computer of the system or apparatus read and execute the program This process can be realized. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

２０６：光源、２０８：分光部、２０９：受光素子、２０１：制御部 206: light source, 208: spectroscopic unit, 209: light receiving element, 201: control unit

Claims

A light source that emits light toward the measurement position, a spectroscopic unit that splits reflected light from an object at the measurement position, or transmitted light that has passed through the object at the measurement position, according to the wavelength, and a plurality of pixels A light receiving means for receiving the light dispersed by the spectroscopic means, wherein the plurality of pixels each receive light including a predetermined wavelength, and a spectral sensor including:
A determination process for controlling the spectroscopic sensor to determine whether a measurement object is present at the measurement position, and a determination process that determines that the measurement object is present at the measurement position in the determination process. Control means for performing measurement processing for measuring the measurement object;
With
The measuring device is characterized in that the light emission intensity of the light source in the determination process is lower than the light emission intensity of the light source in the measurement process.

The measuring apparatus according to claim 1, wherein the control unit makes the light receiving time of the light receiving unit in the determination process longer than the light receiving time of the light receiving unit in the measurement process.

The measurement apparatus according to claim 1, wherein the control unit makes a gain of the light receiving unit in the determination process higher than a gain of the light receiving unit in the measurement process.

When the control means determines that the measurement object is present at the measurement position in the determination process, the control means changes the light emission intensity of the light source to increase with time, and increases the light emission intensity of the light source. 4. The measurement apparatus according to claim 1, wherein the light emission intensity of the light source in the measurement process is determined based on a light reception amount of a predetermined pixel. 5.

The measurement apparatus according to claim 4, wherein the predetermined pixel is a pixel used for measuring the measurement object in the measurement process.

The control means determines whether the measurement object is at the measurement position based on the amount of light received by the predetermined pixel in the measurement process, and determines that the measurement object is not at the measurement position. 6. The measuring apparatus according to claim 4, wherein the emission intensity is set lower than the emission intensity of the light source in the measurement process.

The measurement apparatus according to claim 6, wherein the control unit starts the determination process when determining that the measurement object is not at the measurement position.

8. The control unit according to claim 1, wherein the control unit stops the light emission of the light source when a predetermined period elapses without determining that the measurement object is present at the measurement position in the determination process. The measuring apparatus according to item 1.

The control means has determination information based on spectral reflectances of a plurality of wavelengths for determining the measurement object, and the pixels of the light receiving means that receive each wavelength of the plurality of wavelengths in the determination process 9. The measurement according to claim 1, wherein it is determined whether the measurement object is at the measurement position based on the spectral reflectance obtained based on the amount of received light and the determination information. apparatus.

A light source that emits light toward the measurement position, a spectroscopic unit that splits reflected light from an object at the measurement position, or transmitted light that has passed through the object at the measurement position, according to the wavelength, and a plurality of pixels A light receiving means for receiving the light dispersed by the spectroscopic means, wherein the plurality of pixels each receive light including a predetermined wavelength, and a spectral sensor including:
A determination process for controlling the spectroscopic sensor to determine whether a measurement object is present at the measurement position, and a determination process that determines that the measurement object is present at the measurement position in the determination process. Control means for performing measurement processing for measuring the measurement object;
With
The control means has determination information based on spectral reflectances of a plurality of wavelengths for determining the measurement object, and the pixels of the light receiving means that receive each wavelength of the plurality of wavelengths in the determination process A measuring apparatus for determining whether the measurement object is at the measurement position based on the spectral reflectance obtained based on the received light amount and the determination information.

The determination information indicates spectral reflectances of the plurality of wavelengths,
The control unit compares the spectral reflectance of the plurality of wavelengths indicated by the determination information with the spectral reflectance obtained based on the amount of light received by a pixel of the light receiving unit that receives each wavelength of the plurality of wavelengths. The measuring apparatus according to claim 9, wherein the measuring apparatus determines whether the measurement object is at the measurement position.

The determination information includes one or more determination formulas indicating a magnitude relationship between spectral reflectances of two wavelengths of the plurality of wavelengths.
The control unit determines whether the spectral reflectance obtained based on the amount of light received by the pixel of the light receiving unit that receives each of the plurality of wavelengths satisfies the one or more determination formulas. The measuring apparatus according to claim 9, wherein it is determined whether or not the measurement position is at the measurement position.

The control means has a plurality of the determination information corresponding to the plurality of measurement objects, and is specified by a user in the determination process or specified by an external device communicating with the measurement device Information is used, The measuring apparatus of any one of Claim 9 to 12 characterized by the above-mentioned.

The control means receives, from the external device, the determination information used in the determination processing performed before the measurement processing when receiving an instruction to start the measurement processing from an external device communicating with the measurement device. The measuring device according to claim 9, wherein

The measurement object is a living body,
The measurement apparatus according to claim 1, wherein the control unit measures biological information of the living body by controlling the spectroscopic sensor in the measurement process.

The measurement apparatus according to claim 15, wherein the biological information includes at least one of a pulse, a degree of vascular hardening, a percutaneous arterial oxygen saturation, and a carboxyhemoglobin concentration.

The measurement apparatus according to claim 1, wherein the light source emits visible light.

A light source that emits light toward the measurement position, a spectroscopic unit that splits reflected light from an object at the measurement position, or transmitted light that has passed through the object at the measurement position, according to the wavelength, and a plurality of pixels A light receiving means for receiving the light dispersed by the spectroscopic means, wherein the plurality of pixels each receive light including a predetermined wavelength, and a spectral sensor including:
One or more processors;
When executed on the one or more processors of the measuring device having
In the measuring device,
A determination process for controlling the spectroscopic sensor to determine whether there is a measurement object at the measurement position;
When it is determined that the measurement object is present at the measurement position in the determination process, the measurement process for controlling the spectroscopic sensor to measure the measurement object;
A program for executing
A program for making the light emission intensity of the light source in the determination process lower than the light emission intensity of the light source in the measurement process.

A light source that emits light toward the measurement position, a spectroscopic unit that splits reflected light from an object at the measurement position, or transmitted light that has passed through the object at the measurement position, according to the wavelength, and a plurality of pixels A light receiving means for receiving the light dispersed by the spectroscopic means, wherein the plurality of pixels each receive light including a predetermined wavelength, and a spectral sensor including:
One or more processors;
When executed on the one or more processors of the measuring device having
In the measuring device,
A determination process for controlling the spectroscopic sensor to determine whether there is a measurement object at the measurement position;
When it is determined that the measurement object is present at the measurement position in the determination process, the measurement process for controlling the spectroscopic sensor to measure the measurement object;
A program for executing
In the determination process, the determination object is determined based on determination information based on spectral reflectances of a plurality of wavelengths and a light reception amount of a pixel of the light receiving unit that receives each wavelength of the plurality of wavelengths. A program for determining whether the measurement object is at the measurement position by comparing the measured spectral reflectance.