JP4231953B2 - Ear hole type SAW thermometer and body temperature management system using the thermometer - Google Patents

Ear hole type SAW thermometer and body temperature management system using the thermometer Download PDF

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JP4231953B2
JP4231953B2 JP2002276908A JP2002276908A JP4231953B2 JP 4231953 B2 JP4231953 B2 JP 4231953B2 JP 2002276908 A JP2002276908 A JP 2002276908A JP 2002276908 A JP2002276908 A JP 2002276908A JP 4231953 B2 JP4231953 B2 JP 4231953B2
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body temperature
thermometer
pulse signal
reflector
saw
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JP2004113270A (en
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瑳一 細田
保夫 村上
晃也 杉山
秀雄 保田
明 内山
利行 斉藤
和美 藪崎
博一 杉山
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ペガサスネット株式会社
博一 杉山
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Description

【0001】
本発明は、SAW(Surface Acoustic Wave:弾性表面波) 体温計デバイスを内蔵した耳孔式SAW体温計により患者の正確な体温データの計測とID情報の取得を行うことに関するものである。
【0002】
【従来の技術】
従来、人体の体温を測る手段として水銀体温計や温度センサーによる電子体温計が使用されていた。また、近年において耳孔内の鼓膜及びその周辺部から放射される赤外線を焦電センサーにて数秒のうちに計測する耳孔式体温計が普及し始めている。
【0003】
上記水銀体温計や電子体温計又は耳孔式体温計は定期的な検温時間における体温測定に使用するものであり、連続的な体温データが必要な病院等の患者や保育器内の乳幼児等の体温測定を行う場合には、温度センサーを患者の体温計測部位に貼付して体温データをサンプリング計測する手段があるが、該手段における温度センサーには信号線があるため体の動きが制限されてしまうといった問題点があった。該問題点を解決するため、本願出願人による特願2002−131346「ID付きSAWデバイス体温計及び該体温計による体温管理システム」においては、SAWデバイス体温計から出力される反射パルス信号を受信して演算処理することにより体温測定を行うことができる、コードレスのID付きSAWデバイス体温計を提案した。
【0004】
【発明が解決しようとする課題】
しかしながら、上記温度センサー又はSAWデバイス体温計は、患者の体表面における体温計測部位に貼付して体温データをサンプリング計測する方式ため、外気や衣服等による温度変化の影響を受け易く、正確な体温測定を行うことができないといった問題点があった。
【0005】
本発明は、以上のような問題点を解決するために提案されたものであり、患者の正確な体温データの計測とID情報の取得を行うことが出来、更には信号線がないことにより体の動きを制限することなく体温データを連続的に計測することができるSAW体温計デバイスを内蔵した耳孔式SAW体温計の提供を目的とする。また当該データをネットワーク経由で収集すれば、多数の患者の体温データを一元管理することが可能である。
【0006】
【課題を解決するための手段】
上記課題を解決するため、本発明の耳孔式SAW体温計及び該体温計による体温管理システムは、体温データを計測するための体温計測用リフレクタとID情報を取得するためのID用リフレクタとデータ検出パルス信号の受信及び反射パルス信号の送信を行うためのIDTを有したSAW体温計デバイス及びアンテナをケーシングに内蔵した耳孔式SAW体温計と、該耳孔式SAW体温計に対しデータ検出パルス信号の送信及び当該耳孔式SAW体温計から出力される反射パルス信号の受信を行うと共に、該反射パルス信号を演算処理することにより体温データの計測及びID情報の取得を行い、更にはネットワークを経由して前記体温データ及びID情報をサーバーに伝送することができる体温計測装置にて構成する。また、前記ID情報に対応する体温データをサーバーにて連続的に計測し、患者毎にデータベース化することにより体温データの一元管理を行う。
【0007】
【発明の実施の形態】
本発明の実施の形態を図を用いて説明する。図1は本発明の耳孔式SAW体温計を耳孔内に挿着した状態及び測定方法を示した図である。
【0008】
耳孔式SAW体温計1は、ケーシング2において体温データを計測するための体温計測用リフレクタとID情報を取得するためのID用リフレクタとデータ検出パルス信号の受信及び反射パルス信号の送信を行うためのIDTを有したSAW体温計デバイス3を先端部に鼓膜11及びその周辺部から放射される赤外線を導入するための孔2aを穿孔したプローブ2bに内蔵し、前記IDTに接続したアンテナ6を本体2cに内蔵して構成する。使用時には、該耳孔式SAW体温計1のプローブ2bをイヤホンのように耳孔10内に挿着するだけである。
【0009】
体温測定を行う場合、体温計測装置12のアンテナ13より耳孔式SAW体温計1に対しデータ検出パルス信号を送信すると当該耳孔式SAW体温計1から反射パルス信号が出力される。そして、該反射パルス信号をアンテナ13で受信して演算処理することにより体温データの計測及びID情報の取得を行うことができる。該体温データはLCD等のモニタ部23に表示したりネットワーク24を経由して体温データ及びID情報をサーバーに伝送することができる。
【0010】
図2は本発明の耳孔式SAW体温計に内蔵するSAW体温計デバイスの構造を示した一実施例図であり、SAW体温計デバイス3の基板4上の略中央部にIDT5(Interdigital Transducers)を配設し、左側部に2本のリフレクタで構成される体温計測用リフレクタ7をIDT5と平行に配設し、更に右側部に多数のリフレクタで構成されるID用リフレクタ8をIDT5と平行に配設してある。前記ID用リフレクタ8は、IDT5に対し手前側が短く奥側が長いリフレクタを当該リフレクタの基板内部側の先端の包絡線がV字型を成すと共に各ビットが交互にクシ型を成すように配設する。また、各ID用リフレクタ8の基板端部側にID設定用ヒューズ9を配設する。また、IDT5の両端部を接続したアンテナ端子Aに外部のアンテナ6を接続する。
【0011】
上記図2において、基板4の下部側のIDT5に近い方よりビット1,ビット3,ビット5‥‥ビット23を配設し、上部側のIDT5に近い方よりビット2,ビット4,ビット6‥‥ビット24の計24本のID用リフレクタ8を配設してあるため、最大24ビットのIDパターンを発生することができる。なお、ビット21〜24まではV字型の底部に相当する部分であり、該底部における数ビット分の配設方法はクシ型にした以外は一般的方法である。また、ID設定用ヒューズ9は、ID用リフレクタ8のパターン幅に比べ非常に細くして微小抵抗成分を持たせている。
【0012】
また、図3は本発明の耳孔式SAW体温計及び該体温計による体温管理システムにおける体温計測装置の回路ブロック図であり、該体温計測装置12はアンテナ13より耳孔式SAW体温計1に対しデータ検出パルス信号を送信したり耳孔式SAW体温計1のアンテナ6から送信される体温データ及びID情報を含む反射パルス信号を受信するためのパルス送受信部14と、前記データ検出パルス信号の原信号を生成するためのパルス発生部15と、前記反射パルス信号を増幅するための増幅部16及び当該反射パルス信号の位相又は振幅を検出するための位相又は振幅検出部17と、基準温度における基準反射時間間隔を生成するための恒温槽18及び当該恒温槽18内に配設された基準SAWデバイス又は基準パルス発生回路19と、前記位相又は振幅検出部17より得られた体温データ及びID情報を含む反射パルス信号のうち体温データにより反射時間間隔と基準温度における基準SAWデバイス又は基準パルス発生回路19の基準反射時間間隔との遅延時間を計測して演算処理することにより体温データを算出したりIDパターンによりID情報を取得するためのデータ処理部20と、後段のネットワーク24と接続して当該体温データやID情報を伝送するためのネットワーク通信部21と、前記データ処理部20内のCPU等を制御するためのプログラムを蓄積し又レジスタとして機能するメモリ部22と、前記体温データをLCD等にて表示するためのモニタ部23等により構成する。
【0013】
図4はID設定用ヒューズの溶断によりID設定を行った状態図であり、データ検出パルス信号に対するID用リフレクタ8からの反射を有効にするためには、該当ビット端子と共通端子G間に高圧パルス発生器(図示せず)からの高圧パルスを印加するとID設定用ヒューズ9は抵抗成分により発熱して溶断し、ID用リフレクタ8が有効となる。図4では、ビット1,5及び11のID設定用ヒューズ9が溶断した状態を示している。このようにして、IDパターンのビット長を予め設定したり、設定したビット長において異なるIDパターン発生の設定を行うことができる。例えばビット長を20ビットとした場合には、IDパターンは220−1個の異なるIDパターンを発生することができる。そして、該IDパターン内におけるID情報として、患者識別番号,性別,年齢,診療科名等の複数の情報を入力することができる。
【0014】
ここで、耳孔式SAW体温計1に対しデータ検出パルス信号を体温計測装置12のアンテナ13より送信すると、該データ検出パルス信号はアンテナ6で受信された後、IDT5より基板4の左右両側に進行する。ここで、左側に進行したデータ検出パルス信号は体温計測用リフレクタ7で反射され、再びIDT5に戻り体温データを含んだ反射パルス信号としてアンテナ6より出力される。また、右側に進行したデータ検出パルス信号はID用リフレクタ8で反射され、再びIDT5に戻りID情報を含んだ反射パルス信号としてアンテナ6より出力される。なお、IDT5における体温計測用リフレクタ7までの距離とID用リフレクタ8までの距離として、体温計測用リフレクタ7までの距離がID用リフレクタ8までの距離より短く、先に体温データを含んだ反射パルス信号が送信され次にID情報を含んだ反射パルス信号が送信されるため、両反射パルス信号が重畳することはない。
【0015】
また、図5は図2の体温計測用リフレクタにおけるデータ検出パルス信号及び反射パルス信号の関係を示した図であり、耳孔式SAW体温計1に対して体温計測装置12のアンテナ13よりデータ検出パルス信号Pを送信すると、該データ検出パルス信号Pはアンテナ6で受信された後、(a)図の▲1▼で示すようにIDT5より基板4の左側に進行し、最初の体温計測用リフレクタ7−1で反射される。ここで、該反射により発生した反射パルス信号をaとする。次に、▲2▼で示すデータ検出パルス信号Pは更に左側に進行し、2番目の体温計測用リフレクタ7−2で反射される。ここで、該反射により発生した反射パルス信号をbとすると、両反射パルス信号a,bは再びIDT5に戻りアンテナ6より反射パルス信号として体温計測装置12のアンテナ13に対して出力される。
【0016】
ここで、(b)図で示すように実測体温がT1の時の反射パルス信号a,bの反射時間間隔をt1とし、基準温度をT2とした時の反射パルス信号a,b’の基準反射時間間隔をt2とすると、基準温度T2と実測体温T1の差は、基準反射時間間隔t2と反射時間間隔t1の差すなわち遅延時間t3を計測することにより求めることができる。該反射時間間隔t1は、体温が高いと短くなり体温が低いと長くなる性質があり、更には体温と反射時間間隔t1の関係式はIDT5と体温計測用リフレクタ7−1,7−2間の距離及びデータ検出パルス信号Pに含まれるキャリア周波数の位相との1次関数で表されるため、基準温度T2における基準反射時間間隔t2が判れば実測体温T1が容易に算出することができる。このように、体温計測は反射パルス信号a,bの反射時間間隔t1の計測のみにより算出できるため、体温計測装置12と耳孔式SAW体温計1との距離には無関係に計測することができる。
【0017】
次に、ID用リフレクタ8の反射原理を説明する。図6は図2の2点鎖線部におけるデータ検出パルス信号と反射パルス信号の関係を示した図であり、(a)図に示すようにIDT5から出力されたデータ検出パルス信号PがID用リフレクタ8の1ビット目のリフレクタ8−1と3ビット目のリフレクタ8−3及び5ビット目のリフレクタ8−5により反射される状態を示している。ここで、ID用リフレクタ8がV字型を成すため、3ビット目のリフレクタ8−3は1ビット目のリフレクタ8−1より幅Wだけ基板4の内側に延び、5ビット目のリフレクタ8−5は3ビット目のリフレクタ8−3より幅Wだけ基板4の内側に延びているものとする。ここで、IDT5よりデータ検出パルス信号Pが出力されると、1ビット目のリフレクタ8−1より反射パルス信号cが発生する。また、3ビット目のリフレクタ8−3の幅Wの部分より反射パルス信号dが発生すると共に他の部分において1ビット目のリフレクタ8−1を通過したデータ検出力パルス信号Pにより反射パルス信号d’が発生する。また、5ビット目のリフレクタ8−5の幅Wの部分より反射パルス信号eが発生すると共に他の部分において1ビット目のリフレクタ8−1と3ビット目のリフレクタ8−3を通過したデータ検出パルス信号Pにより反射パルス信号e’が発生する。ここで、(b)図に示すように反射パルス信号dと反射パルス信号d’の時間遅れを無視すると当該反射パルス信号dと反射パルス信号d’が重なり合い、反射パルス信号eと反射パルス信号e’の時間遅れを無視すると当該反射パルス信号eと反射パルス信号e’が重なり合い、IDT5よりL1の距離にあるリフレクタ8−1が反射する反射パルス信号cとL3の距離にあるリフレクタ8−3が反射する反射パルス信号dとL5の距離にあるリフレクタ8−5が反射する反射パルス信号eのレベルは減衰することなく忠実にIDT5に反射されることになる。なお、図6ではビット1,3,5の奇数番目のリフレクタについて説明したが偶数番目のリフレクタについても同様であり、ID用リフレクタ8の各ビットが交互にクシ型に配設されているため、ビット1,2,3,4,5,6‥‥と順に反射されることになる。
【0018】
また、図7は図4のIDパターンにおけるID用リフレクタからの反射パルス信号の位置関係を示した図であり、図4に示すように全24ビット中ビット1,5及び11のID設定用ヒューズ9を高圧パルス発生器により溶断したと仮定した場合、IDT5より出力されたデータ検出パルス信号Pによりビット1のリフレクタ8−1による反射パルス信号p1とビット5のリフレクタ8−5による反射パルス信号p5及びビット11のリフレクタ8−11による反射パルス信号p11のみがIDT5に反射される。そして、該ID情報を含んだ反射パルス信号を体温計測装置12に対し出力することになる。なお、ID設定用ヒューズ9の溶断を行わなかったビットのID用リフレクタ8は当該ID設定用ヒューズ9により共通端子Gに接続され、更に当該共通端子Gをアンテナ端子A側に接続することにより、どこにデータ検出パルス信号Pが当っても減衰して反射は発生しない。このため、ID設定用ヒューズ9を溶断又は非溶断することによりIDパターンのビット長を予め設定したり、設定したビット長において異なるIDパターン発生の設定を行うことができることになる。
【0019】
【実施例】
本発明の実施例を図を用いて説明する。図8は本発明の耳孔式SAW体温計及び該体温計による体温管理システムを病院の患者の体温管理システムに応用した一実施例図である。
【0020】
カーテン27で仕切られた各病室28において、各患者29のベッド30の頭部側には小物入れやテーブル等が一体となった床頭台31が設置されている。そこで、該床頭台31に体温計測装置12を設置すると共に、該体温計測装置12内のネットワーク通信部21を病院内のLAN等のネットワーク24に接続し、更に当該ネットワーク24を経由して上位のサーバー25に接続する。また、該サーバー25にはモニタ装置26を接続する。
【0021】
体温計測装置12のアンテナ13からは、患者29の耳孔10内に挿着された耳孔式SAW体温計1に対してデータ検出パルス信号Pを一定のサンプリング周期にて送信する。次に、該データ検出パルス信号Pに反応した耳孔式SAW体温計1のアンテナ6からは、当該患者29の実時間における反射パルス信号が体温計測装置12のアンテナ13に対し出力される。なお、該体温計測装置12から耳孔式SAW体温計1へのデータ検出パルス信号Pの送信能力は、隣の患者29の反射パルス信号との混信を防止するため、1m程度が好適である。
【0022】
体温計測装置12は、該反射パルス信号中の体温データより反射時間間隔と当該体温計測装置12内の恒温槽18内に配設されている基準SAWデバイス又は基準パルス発生回路19の基準温度における基準反射時間間隔とを比較して演算処理することにより患者29の体温を正確に計測することができ、更に該反射パルス信号中のID情報より患者29のID情報を取得することができる。そして、該演算により算出された体温データ及びID情報をLAN等のネットワーク24を経由してサーバー25に伝送する。なお、前記恒温槽18は小型の電気式又は電子式ヒーターが一般的であるが、基準SAWデバイス又は基準パルス発生回路19自体に定温制御回路を付加したものであっても構わない。
【0023】
サーバー25は、上記体温データをID情報に基づいてデータベース化することにより、患者毎の体温データを連続的に計測することができる。そして、当該患者29の体温に異常が発生した場合等においては、ネットワーク24を経由してナースセンター内の端末装置にアラーム出力することが可能である。このようにして、多数の患者29の連続的な体温データをデータベース化することにより、患者毎の体温データをネットワークで一元管理することが可能となる。
【0024】
なお、上記サーバー25に接続したモニタ装置26は各患者29の体温データの数値表示やグラフ表示を行うことができ、更にアラーム出力を行うための設定値等を入力することもできる。更にはプリンタ(図示せず)への印字設定を行うことも可能である。
【0025】
また、上述の説明は体温計測装置12を床頭台31に設置した例について述べたが、ベッド30の頭部側等など任意な場所に設置しても構わない。更には体温測定の対象を病院等の患者とし、ネットワーク24を経由して多数の患者の体温データの一元管理を行う例について述べたが、オンライン機能やID情報を利用しないでスタンドアロンで使用するようにすれば、家庭内における病人の体温測定に使用することも可能である。
【0026】
【発明の効果】
以上述べたように、本発明の耳孔式SAW体温計及び該体温計による体温管理システムを病院や老人ホーム又は在宅介護等において実施すれば、耳孔式SAW体温計を患者の耳孔内に挿着しておくだけで正確な体温データの連続計測が容易に行うことができるという効果を奏する。また、該耳孔式SAW体温計には信号線がなく、更には電子回路やバッテリー等もなく非常に小型であるため、体の動きを制限することがないという効果も奏する。また、ネットワークを経由して多数の患者の連続的な体温データをID情報に基づきデータベース化することにより、患者毎の体温データをネットワークで一元管理することができるという効果も奏する。
【図面の簡単な説明】
【図1】本発明の耳孔式SAW体温計を耳孔内に挿着した状態及び測定方法を示した図である。
【図2】本発明の耳孔式SAW体温計に内蔵するSAW体温計デバイスの構造を示した一実施例図である。
【図3】本発明の耳孔式SAW体温計及び該体温計による体温管理システムにおける体温計測装置の回路ブロック図である。
【図4】ID設定用ヒューズの溶断によりID設定を行った状態図である。
【図5】図2の体温計測用リフレクタにおけるデータ検出パルス信号と反射パルス信号の関係を示した図である。
【図6】図2の2点鎖線部におけるデータ検出パルス信号と反射パルス信号の関係を示した図である。
【図7】図4のIDパターンにおけるID用リフレクタからの反射パルス信号の位置関係を示した図である。
【図8】本発明の耳孔式SAW体温計及び該体温計による体温管理システムを病院の患者の体温管理システムに応用した一実施例図である。
【符号の説明】
1 耳孔式SAW体温計
2 ケーシング
3 SAW体温計デバイス
4 基板
5 IDT
6 アンテナ
7 体温計測用リフレクタ
8 ID用リフレクタ
9 ID設定用ヒューズ
10 耳孔
11 鼓膜
12 体温計測装置
13 アンテナ
14 パルス送受信部
15 パルス発生部
16 増幅部
17 位相又は振幅検出部
18 恒温槽
19 基準SAWデバイス又は基準パルス発生回路
20 データ処理部
21 ネットワーク通信部
22 メモリ部
23 モニタ部
24 ネットワーク
25 サーバー
26 モニタ装置
27 カーテン
28 病室
29 患者
30 ベッド
31 床頭台
[0001]
The present invention relates to accurate measurement of patient temperature data and acquisition of ID information using an ear canal type SAW thermometer incorporating a SAW (Surface Acoustic Wave) thermometer device.
[0002]
[Prior art]
Conventionally, mercury thermometers and electronic thermometers using temperature sensors have been used as means for measuring the temperature of the human body. In recent years, ear-hole thermometers that measure infrared rays radiated from the eardrum in the ear canal and its surroundings with a pyroelectric sensor within a few seconds have begun to spread.
[0003]
The mercury thermometer, electronic thermometer, or ear canal thermometer is used to measure body temperature during regular temperature measurements, and measures body temperature of hospital patients and infants in incubators that require continuous body temperature data. In some cases, there is a means for sampling and measuring body temperature data by attaching a temperature sensor to the body temperature measurement site of the patient, but the temperature sensor in the means has a signal line, which limits the movement of the body was there. In order to solve this problem, in Japanese Patent Application No. 2002-131346 “SAW device thermometer with ID and body temperature management system using thermometer” by the applicant of the present application, a reflected pulse signal output from the SAW device thermometer is received and processed. A cordless ID-attached SAW device thermometer that can measure body temperature by doing so was proposed.
[0004]
[Problems to be solved by the invention]
However, because the temperature sensor or SAW device thermometer is a method of sampling and measuring body temperature data by attaching it to a body temperature measurement site on the patient's body surface, it is easily affected by temperature changes due to outside air, clothes, etc., and accurate temperature measurement is possible. There was a problem that it could not be done.
[0005]
The present invention has been proposed in order to solve the above-described problems, and can accurately measure a patient's temperature data and acquire ID information. An object of the present invention is to provide an ear canal type SAW thermometer with a built-in SAW thermometer device capable of continuously measuring body temperature data without restricting the movement of the body. Moreover, if the data is collected via a network, it is possible to centrally manage body temperature data of a large number of patients.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, an ear canal type SAW thermometer and a body temperature management system using the thermometer according to the present invention include a body temperature measurement reflector for measuring body temperature data, an ID reflector for acquiring ID information, and a data detection pulse signal. SAW thermometer device with IDT for receiving and transmitting reflected pulse signal, ear hole type SAW thermometer with antenna built in casing, transmission of data detection pulse signal to said ear hole type SAW thermometer, and said ear hole type SAW The reflected pulse signal output from the thermometer is received, and the reflected pulse signal is processed to measure body temperature data and acquire ID information. Further, the body temperature data and ID information are obtained via a network. It consists of a body temperature measuring device that can be transmitted to the server. In addition, body temperature data corresponding to the ID information is continuously measured by a server, and database management is performed for each patient, thereby centrally managing body temperature data.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a state and measurement method in which the ear canal SAW thermometer of the present invention is inserted into the ear canal.
[0008]
The ear canal type SAW thermometer 1 includes a body temperature measuring reflector for measuring body temperature data in the casing 2, an ID reflector for acquiring ID information, an IDT for receiving a data detection pulse signal and transmitting a reflected pulse signal. The SAW thermometer device 3 having the above is incorporated in the probe 2b having a hole 2a for introducing infrared rays radiated from the eardrum 11 and its peripheral part at the tip, and the antenna 6 connected to the IDT is incorporated in the main body 2c. And configure. In use, the probe 2b of the ear canal type SAW thermometer 1 is simply inserted into the ear hole 10 like an earphone.
[0009]
When body temperature measurement is performed, when a data detection pulse signal is transmitted from the antenna 13 of the body temperature measuring device 12 to the ear canal SAW thermometer 1, a reflected pulse signal is output from the ear canal SAW thermometer 1. The reflected pulse signal is received by the antenna 13 and processed to measure body temperature data and acquire ID information. The body temperature data can be displayed on a monitor unit 23 such as an LCD, or the body temperature data and ID information can be transmitted to the server via the network 24.
[0010]
FIG. 2 is a diagram showing an example of the structure of a SAW thermometer device built in the ear canal type SAW thermometer of the present invention. An IDT 5 (Interdigital Transducers) is disposed at a substantially central portion on the substrate 4 of the SAW thermometer device 3. The body temperature measuring reflector 7 composed of two reflectors is arranged on the left side in parallel with the IDT 5, and the ID reflector 8 composed of many reflectors is arranged on the right side in parallel with the IDT 5. is there. The ID reflector 8 is provided with a reflector having a short front side and a long back side with respect to the IDT 5 such that the envelope at the tip of the reflector inside the substrate forms a V shape and each bit alternately forms a comb shape. . Further, an ID setting fuse 9 is disposed on the substrate end side of each ID reflector 8. An external antenna 6 is connected to the antenna terminal A to which both ends of the IDT 5 are connected.
[0011]
In FIG. 2, the bit 1, bit 3, bit 5... Bit 23 are arranged from the lower side of the substrate 4 closer to the IDT 5, and the bit 2, bit 4, bit 6. Since a total of 24 ID reflectors 8 of 24 bits are arranged, an ID pattern of a maximum of 24 bits can be generated. The bits 21 to 24 are portions corresponding to the bottom of the V-shape, and the arrangement method for several bits at the bottom is a general method except that it is comb-shaped. Further, the ID setting fuse 9 is very narrow compared with the pattern width of the ID reflector 8 and has a minute resistance component.
[0012]
FIG. 3 is a circuit block diagram of the ear canal SAW thermometer and the body temperature measuring device in the body temperature management system using the thermometer of the present invention. The body temperature measuring device 12 transmits a data detection pulse signal from the antenna 13 to the ear canal SAW thermometer 1. For transmitting a reflected pulse signal including body temperature data and ID information transmitted from the antenna 6 of the ear canal type SAW thermometer 1, and for generating an original signal of the data detection pulse signal A pulse generation unit 15, an amplification unit 16 for amplifying the reflected pulse signal, a phase or amplitude detection unit 17 for detecting the phase or amplitude of the reflected pulse signal, and a reference reflection time interval at a reference temperature are generated. And a reference SAW device or reference pulse generation circuit 19 disposed in the thermostat 18, Delay time between the reflection time interval and the reference reflection time interval of the reference SAW device or the reference pulse generation circuit 19 at the reference temperature according to the body temperature data among the reflection pulse signals including the body temperature data and ID information obtained from the phase or amplitude detection unit 17. For calculating body temperature data by measuring and calculating the body temperature data and acquiring ID information by the ID pattern, and connecting to the network 24 in the subsequent stage for transmitting the body temperature data and ID information. A network communication unit 21, a memory unit 22 that stores a program for controlling the CPU and the like in the data processing unit 20 and functions as a register, a monitor unit 23 for displaying the body temperature data on an LCD, etc. It consists of.
[0013]
FIG. 4 is a state diagram in which ID setting is performed by blowing the ID setting fuse. In order to enable reflection from the ID reflector 8 for the data detection pulse signal, a high voltage is applied between the corresponding bit terminal and the common terminal G. When a high voltage pulse from a pulse generator (not shown) is applied, the ID setting fuse 9 generates heat due to the resistance component and melts, and the ID reflector 8 becomes effective. FIG. 4 shows a state where the ID setting fuses 9 of the bits 1, 5 and 11 are blown. In this way, the bit length of the ID pattern can be set in advance, or different ID pattern generation can be set for the set bit length. For example, when the bit length is 20 bits, the ID pattern can generate 2 20 −1 different ID patterns. A plurality of pieces of information such as a patient identification number, sex, age, and department name can be input as ID information in the ID pattern.
[0014]
Here, when a data detection pulse signal is transmitted from the antenna 13 of the body temperature measuring device 12 to the ear canal type SAW thermometer 1, the data detection pulse signal is received by the antenna 6, and then proceeds to the left and right sides of the substrate 4 from the IDT 5. . Here, the data detection pulse signal proceeding to the left is reflected by the body temperature measuring reflector 7 and returns to the IDT 5 again to be output from the antenna 6 as a reflected pulse signal including body temperature data. The data detection pulse signal that has traveled to the right is reflected by the ID reflector 8, returns to the IDT 5 again, and is output from the antenna 6 as a reflected pulse signal including ID information. Note that the distance to the body temperature measuring reflector 7 and the distance to the ID reflector 8 in the IDT 5 are shorter than the distance to the ID reflector 8 and the reflected pulse including the body temperature data first. Since the signal is transmitted and then the reflected pulse signal including the ID information is transmitted, both reflected pulse signals are not superimposed.
[0015]
FIG. 5 is a diagram showing the relationship between the data detection pulse signal and the reflection pulse signal in the body temperature measurement reflector of FIG. 2. The data detection pulse signal is transmitted from the antenna 13 of the body temperature measuring device 12 to the ear canal type SAW thermometer 1. When P is transmitted, the data detection pulse signal P is received by the antenna 6, and then proceeds to the left side of the substrate 4 from the IDT 5 as shown by (1) in FIG. 1 is reflected. Here, a reflected pulse signal generated by the reflection is represented by a. Next, the data detection pulse signal P indicated by (2) travels further to the left and is reflected by the second body temperature measuring reflector 7-2. Here, if the reflected pulse signal generated by the reflection is b, both reflected pulse signals a and b return to the IDT 5 again and are output from the antenna 6 to the antenna 13 of the body temperature measuring device 12 as reflected pulse signals.
[0016]
Here, as shown in FIG. 6B, the reference reflection of the reflected pulse signals a and b ′ when the reflected time interval of the reflected pulse signals a and b when the measured body temperature is T1 is t1, and the reference temperature is T2. When the time interval is t2, the difference between the reference temperature T2 and the measured body temperature T1 can be obtained by measuring the difference between the reference reflection time interval t2 and the reflection time interval t1, that is, the delay time t3. The reflection time interval t1 has a property that it becomes short when the body temperature is high and becomes long when the body temperature is low. Further, the relational expression between the body temperature and the reflection time interval t1 is between the IDT 5 and the temperature measurement reflectors 7-1 and 7-2. Since it is expressed by a linear function of the distance and the phase of the carrier frequency included in the data detection pulse signal P, the measured body temperature T1 can be easily calculated if the reference reflection time interval t2 at the reference temperature T2 is known. Thus, since the body temperature can be calculated only by measuring the reflection time interval t1 of the reflected pulse signals a and b, the body temperature can be measured regardless of the distance between the body temperature measuring device 12 and the ear hole type SAW thermometer 1.
[0017]
Next, the reflection principle of the ID reflector 8 will be described. FIG. 6 is a diagram showing the relationship between the data detection pulse signal and the reflected pulse signal in the two-dot chain line portion of FIG. 2, and the data detection pulse signal P output from the IDT 5 is the ID reflector as shown in FIG. 8 shows a state of being reflected by a reflector 8-1 of the 1st bit, a reflector 8-3 of the 3rd bit, and a reflector 8-5 of the 5th bit. Here, since the ID reflector 8 is V-shaped, the third-bit reflector 8-3 extends inside the substrate 4 by a width W from the first-bit reflector 8-1, and the fifth-bit reflector 8- 5 is assumed to extend inside the substrate 4 by a width W from the reflector 8-3 of the third bit. Here, when the data detection pulse signal P is output from the IDT 5, the reflected pulse signal c is generated from the reflector 8-1 of the first bit. The reflected pulse signal d is generated from the width W portion of the third-bit reflector 8-3, and the reflected pulse signal d is generated by the data power pulse signal P that has passed through the first-bit reflector 8-1 in other portions. 'Occurs. In addition, a reflected pulse signal e is generated from the width W portion of the fifth bit reflector 8-5, and data detection that passes through the first bit reflector 8-1 and the third bit reflector 8-3 in the other portion. A reflected pulse signal e ′ is generated by the pulse signal P. Here, as shown in FIG. 5B, when the time delay between the reflected pulse signal d and the reflected pulse signal d ′ is ignored, the reflected pulse signal d and the reflected pulse signal d ′ overlap, and the reflected pulse signal e and the reflected pulse signal e are overlapped. If the time delay of 'is ignored, the reflected pulse signal e and the reflected pulse signal e' overlap, and the reflector 8-3 at the distance of L3 reflected by the reflector 8-1 at the distance of L1 from the IDT 5 is reflected by the reflector 8-3. The level of the reflected pulse signal e reflected by the reflector 8-5 at a distance of L5 from the reflected pulse signal d to be reflected is faithfully reflected by the IDT 5 without being attenuated. Although the odd-numbered reflectors of bits 1, 3, and 5 are described in FIG. 6, the same applies to the even-numbered reflectors, and the bits of the ID reflector 8 are alternately arranged in a comb shape. Bits 1, 2, 3, 4, 5, 6,.
[0018]
7 is a diagram showing the positional relationship of the reflected pulse signal from the ID reflector in the ID pattern of FIG. 4. As shown in FIG. 4, ID setting fuses of bits 1, 5 and 11 in all 24 bits. 9 is blown by the high-voltage pulse generator, the reflected pulse signal p1 from the reflector 8-1 of bit 1 and the reflected pulse signal p5 from the reflector 8-5 of bit 5 based on the data detection pulse signal P output from the IDT 5 And only the reflected pulse signal p11 by the reflector 8-11 of the bit 11 is reflected to the IDT 5. Then, the reflected pulse signal including the ID information is output to the body temperature measuring device 12. It should be noted that the ID reflector 8 of the bit for which the ID setting fuse 9 has not been blown is connected to the common terminal G by the ID setting fuse 9, and the common terminal G is further connected to the antenna terminal A side. No matter where the data detection pulse signal P hits, it is attenuated and no reflection occurs. For this reason, the ID pattern fuse 9 is blown or not blown, so that the bit length of the ID pattern can be set in advance, or different ID pattern generation can be set for the set bit length.
[0019]
【Example】
Embodiments of the present invention will be described with reference to the drawings. FIG. 8 is a diagram showing an embodiment in which the ear canal SAW thermometer and the body temperature management system using the body thermometer of the present invention are applied to a body temperature management system for a patient in a hospital.
[0020]
In each hospital room 28 partitioned by the curtain 27, a floor head base 31 in which an accessory case and a table are integrated is installed on the head side of the bed 30 of each patient 29. Therefore, the body temperature measuring device 12 is installed on the floor head base 31, and the network communication unit 21 in the body temperature measuring device 12 is connected to a network 24 such as a LAN in the hospital, and further via the network 24. To the server 25. A monitor device 26 is connected to the server 25.
[0021]
A data detection pulse signal P is transmitted from the antenna 13 of the body temperature measuring device 12 to the ear hole type SAW thermometer 1 inserted in the ear hole 10 of the patient 29 at a constant sampling period. Next, the reflected pulse signal of the patient 29 in real time is output from the antenna 6 of the ear canal type SAW thermometer 1 in response to the data detection pulse signal P to the antenna 13 of the body temperature measuring device 12. The transmission capability of the data detection pulse signal P from the body temperature measuring device 12 to the ear canal type SAW thermometer 1 is preferably about 1 m in order to prevent interference with the reflected pulse signal of the adjacent patient 29.
[0022]
The body temperature measuring device 12 uses the body temperature data in the reflected pulse signal as a reference for the reflection time interval and the reference temperature of the reference SAW device or the reference pulse generating circuit 19 disposed in the thermostat 18 in the body temperature measuring device 12. By calculating the comparison with the reflection time interval, the body temperature of the patient 29 can be accurately measured, and the ID information of the patient 29 can be acquired from the ID information in the reflection pulse signal. Then, the body temperature data and the ID information calculated by the calculation are transmitted to the server 25 via the network 24 such as a LAN. The thermostat 18 is generally a small electric or electronic heater, but may be a reference SAW device or a reference pulse generation circuit 19 itself with a constant temperature control circuit added thereto.
[0023]
The server 25 can continuously measure the body temperature data for each patient by creating a database of the body temperature data based on the ID information. When an abnormality occurs in the body temperature of the patient 29, an alarm can be output to the terminal device in the nurse center via the network 24. Thus, by making continuous body temperature data of a large number of patients 29 into a database, it becomes possible to centrally manage body temperature data for each patient over a network.
[0024]
The monitor device 26 connected to the server 25 can perform numerical display and graph display of body temperature data of each patient 29, and can also input a set value for alarm output. Furthermore, it is possible to set printing to a printer (not shown).
[0025]
Moreover, although the above-mentioned description described the example which installed the body temperature measuring apparatus 12 in the floor head base 31, you may install in arbitrary places, such as the head side of the bed 30. In addition, an example in which a body temperature measurement target is a patient in a hospital or the like and the body temperature data of a large number of patients is centrally managed via the network 24 has been described, but it should be used standalone without using an online function or ID information. Then, it can be used for measuring the body temperature of a sick person at home.
[0026]
【The invention's effect】
As described above, if the ear canal SAW thermometer and the body temperature management system using the thermometer of the present invention are implemented in a hospital, a nursing home or home care, etc., the ear canal SAW thermometer is simply inserted into the ear canal of the patient. Thus, there is an effect that accurate continuous measurement of body temperature data can be easily performed. In addition, the ear hole type SAW thermometer has no signal line, and further has no electronic circuit, battery, etc., and is very small, so that the movement of the body is not restricted. In addition, by creating a database of continuous body temperature data of a large number of patients via the network based on the ID information, the body temperature data for each patient can be centrally managed on the network.
[Brief description of the drawings]
FIG. 1 is a diagram showing a state in which an ear canal SAW thermometer of the present invention is inserted into an ear canal and a measuring method.
FIG. 2 is an example diagram showing the structure of a SAW thermometer device built in the ear canal SAW thermometer of the present invention.
FIG. 3 is a circuit block diagram of a body temperature measuring device in the ear canal type SAW thermometer and a body temperature management system using the thermometer of the present invention.
FIG. 4 is a state diagram in which ID setting is performed by blowing an ID setting fuse.
5 is a diagram showing a relationship between a data detection pulse signal and a reflected pulse signal in the body temperature measurement reflector of FIG. 2. FIG.
6 is a diagram showing a relationship between a data detection pulse signal and a reflected pulse signal in the two-dot chain line portion of FIG.
7 is a diagram showing a positional relationship of reflected pulse signals from an ID reflector in the ID pattern of FIG.
FIG. 8 is a diagram showing an embodiment in which the ear canal SAW thermometer and the body temperature management system using the body thermometer of the present invention are applied to a body temperature management system for a patient in a hospital.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ear hole type SAW thermometer 2 Casing 3 SAW thermometer device 4 Board | substrate 5 IDT
6 antenna 7 body temperature measuring reflector 8 ID reflector 9 ID setting fuse 10 ear hole 11 eardrum 12 body temperature measuring device 13 antenna 14 pulse transmitting / receiving unit 15 pulse generating unit 16 amplifying unit 17 phase or amplitude detecting unit 18 constant temperature bath 19 reference SAW device Or the reference pulse generation circuit 20 Data processing unit 21 Network communication unit 22 Memory unit 23 Monitor unit 24 Network 25 Server 26 Monitor device 27 Curtain 28 Patient room 29 Patient 30 Bed 31 Floor head stand

Claims (1)

体温データを計測するための体温計測定リフレクタとID情報情報を取得するためのID用リフレクタとデータ検出パルス信号の受信及び反射パレス信号の送信を行なうためのIDTを有したSAW体温計デバイス及びアンテナをケーシングに内蔵し、人体の耳孔内に挿着してコードレスで体温測定が行なえることを特徴とした、耳孔式SAW体温計。A thermometer measuring reflector for measuring body temperature data, an ID reflector for acquiring ID information information, an SAW thermometer device having an IDT for receiving a data detection pulse signal and transmitting a reflection palace signal, and an antenna casing An ear canal type SAW thermometer, which is built in and can be inserted into the ear canal of a human body to perform cordless body temperature measurement.
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