JPH03158129A - Device for measuring heat responsive property of living body - Google Patents
Device for measuring heat responsive property of living bodyInfo
- Publication number
- JPH03158129A JPH03158129A JP1296613A JP29661389A JPH03158129A JP H03158129 A JPH03158129 A JP H03158129A JP 1296613 A JP1296613 A JP 1296613A JP 29661389 A JP29661389 A JP 29661389A JP H03158129 A JPH03158129 A JP H03158129A
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- temperature
- exothermic body
- skin
- heating element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 230000004044 response Effects 0.000 claims description 10
- 238000009529 body temperature measurement Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000036760 body temperature Effects 0.000 abstract 1
- 238000007519 figuring Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000020169 heat generation Effects 0.000 description 3
- 230000008512 biological response Effects 0.000 description 2
- 238000005316 response function Methods 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000001931 thermography Methods 0.000 description 2
- 208000005623 Carcinogenesis Diseases 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 231100000504 carcinogenesis Toxicity 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）この発明は、生体に熱刺激を与え
たときの皮膚温度の変化を調べるための装置に間するゆ
（従来の技術）生体の痛覚の応答計測には熱刺激による
発癌手法が臨床応用に最適とされているが、そのために
は皮膚温度を正確に測定することが重要である。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an apparatus for examining changes in skin temperature when a thermal stimulus is applied to a living body (prior art). The carcinogenesis method using thermal stimulation is considered to be optimal for clinical application, but it is important to accurately measure skin temperature.
皮膚の測定には、従来、熱電対または輻射熱センサ（サ
ーモグラフィ）が用いられている。Thermocouples or radiant heat sensors (thermography) have traditionally been used to measure the skin.
（発明が解決しようとする課題）しかし、熱電対では、
熱電対自身の熱容量が大きく、皮膚から熱を吸収してし
まうので、正確な測定ができない。(Problem to be solved by the invention) However, with thermocouples,
The thermocouple itself has a large heat capacity and absorbs heat from the skin, making accurate measurements impossible.
また、サーモグラフィは、精度はよいが、装置が大掛か
りで、臨床応用には向かない。Furthermore, although thermography has good accuracy, it requires a large-scale device and is not suitable for clinical application.
この発明は、熱刺激が容易で、しかも、皮膚温度を正確
に検出することのできる、小形で安価に提供できる生体
の熱応答特性針ｉ１１装置を提供することを目的とする
。An object of the present invention is to provide a small and inexpensive biological thermal response characteristic needle i11 device that can easily provide thermal stimulation and accurately detect skin temperature.
（ｆｆＭを解決するための手段）この発明の生体の熱応
答特性計測装置は、生体の皮膚に密着される抵抗発熱体
と、抵抗発熱体に加わる電圧と電流から抵抗発熱体の抵
抗＋ｌＩを算出する手段と、算出した抵抗値と抵抗温度
係数から抵抗発熱体の温度を算出する手段を備えている
。(Means for solving ffM) The biological thermal response characteristic measuring device of the present invention calculates the resistance +lI of the resistance heating element from the resistance heating element that is brought into close contact with the skin of the living body and the voltage and current applied to the resistance heating element. and means for calculating the temperature of the resistance heating element from the calculated resistance value and resistance temperature coefficient.
抵抗発熱体の駆動方法は種々考えられるが、抵抗発熱体
の発熱量が一定になるよう、または、抵抗発熱体の温度
が一定になるよう制御することができる。Although various methods of driving the resistance heating element can be considered, it is possible to control the resistance heating element so that the amount of heat generated by the resistance heating element is constant, or the temperature of the resistance heating element is constant.
（作用）抵抗発熱体は皮膚に密着されているので、抵抗
発熱体とその直下の皮膚温度はほぼ等しい。したがって
、抵抗発熱体の温度を計測することにより、抵抗発熱体
で加熱された皮膚の温度変化を知ることができる。(Function) Since the resistance heating element is in close contact with the skin, the temperature of the resistance heating element and the skin directly below it are approximately equal. Therefore, by measuring the temperature of the resistance heating element, it is possible to know the temperature change of the skin heated by the resistance heating element.
（実施例）第１図において、符号ｌは抵抗発熱体である
。この抵抗発熱体は、−辺が数ミリメータの薄い基板１
ａの上に白金線のような抵抗線１ｂをグリッド状にして
接着したものであり、ストレンゲージに似た構造になっ
ている。測ｔに際しては、基板１ａを生体の皮膚に接着
する。(Embodiment) In FIG. 1, reference numeral 1 indicates a resistance heating element. This resistance heating element consists of a thin substrate 1 with a negative side of several millimeters.
A resistance wire 1b, such as a platinum wire, is bonded to the top of the wire in the form of a grid, and has a structure similar to a strain gauge. When measuring t, the substrate 1a is adhered to the skin of the living body.
符号２は電流制御素子、符号３は小抵抗、符号４．５は
いずれも増幅器である。増幅器４は小抵抗３の電圧降下
から抵抗発熱体１を流れる電流値ｒを求める。一方、増
幅器６は抵抗発熱体１の電圧Ｖを計測する。The reference numeral 2 is a current control element, the reference numeral 3 is a small resistor, and the reference numeral 4.5 is an amplifier. The amplifier 4 determines the current value r flowing through the resistance heating element 1 from the voltage drop across the small resistance 3. On the other hand, the amplifier 6 measures the voltage V of the resistance heating element 1.
符号６は乗算器、符号７は除算器である。増幅器４，６
で計測された抵抗発熱体の電流と電圧は乗算器６に導か
れ、これからｖｘｒ、すなわち抵抗発熱体の電力Ｐが算
出される。同時に、抵抗発熱体の電流と電圧は除算器７
に導かれ、これからＶ／Ｍすなわち抵抗発熱体の抵抗値
Ｒが算出される。Reference numeral 6 is a multiplier, and reference numeral 7 is a divider. Amplifier 4, 6
The current and voltage of the resistive heating element measured in are led to a multiplier 6, from which vxr, that is, the electric power P of the resistive heating element, is calculated. At the same time, the current and voltage of the resistive heating element are divided by the divider 7
From this, V/M, that is, the resistance value R of the resistance heating element is calculated.
符号８は間数発生器であり、これには、抵抗発熱体１の
温度と抵抗値の関係を予め計測して、その間係式が組み
込まれている。この関数発生器８に抵抗発熱体ｌの抵抗
値Ｒを人力し、抵抗発熱体の温度Ｔが出力される。Reference numeral 8 denotes a coefficient generator, which measures the relationship between the temperature and resistance value of the resistance heating element 1 in advance and incorporates a coefficient equation therebetween. The resistance value R of the resistance heating element 1 is input to the function generator 8, and the temperature T of the resistance heating element is outputted.
符号９．ｌＯはいずれもフィードバック増幅器、符号１
１は抵抗発熱体の電力（発熱量）を設定するポテンショ
メータ、符号１２は抵抗発熱体の温度を設定するポテン
ショメータである。Code 9. IO is a feedback amplifier, code 1
1 is a potentiometer that sets the electric power (heat amount) of the resistance heating element, and numeral 12 is a potentiometer that sets the temperature of the resistance heating element.
いま、スイッチ１３が定電力モードになっていると、ポ
テンショメータ１１で設定された電力になるように電流
制御素子がフィードバック制御され、ヒータ１には一定
の電力が供給される。Now, when the switch 13 is in the constant power mode, the current control element is feedback-controlled so that the electric power is set by the potentiometer 11, and constant electric power is supplied to the heater 1.
二のときの、抵抗発熱体の電力（発熱１１）と皮膚温度
の関係を示したのが第２図であるが、皮膚温度が上昇す
る度合いを比較することにより、皮膚温度の変化に対応
する生体応答の機能（熱拡散機能、血流量変化による冷
却機能）を調べることができる。Figure 2 shows the relationship between the power of the resistance heating element (heat generation 11) and the skin temperature in case 2. By comparing the degree of increase in skin temperature, it is possible to respond to changes in skin temperature. It is possible to investigate biological response functions (thermal diffusion function, cooling function due to changes in blood flow).
スイッチを定温度モードに切り替えると、ポテンショメ
ータ１２で与えられた設定温度に等しくなるように電流
制御素子が制御され、皮膚温度は一定に保たれる。この
ときの、電力と皮膚温度の関係を示したのが第３図であ
り、発熱量の変化から生体応答の機能を調べることがで
きる。When the switch is switched to constant temperature mode, the current control element is controlled to be equal to the set temperature given by potentiometer 12, and the skin temperature is kept constant. FIG. 3 shows the relationship between electric power and skin temperature at this time, and the biological response function can be investigated from changes in calorific value.
（発明の効果）この発明は、皮膚に密着された抵抗発熱
体で皮膚を加熱すると共に、抵抗発熱体の抵抗値の変化
から抵抗発熱体の温度を計測し、これによって近似的に
皮膚温度の変化を知るようにしたものであり、１つの素
子で加熱と温度測定が可能であって構造がきわめてシン
プルであり、生体の熱応答特性を調べるのに有益である
。(Effects of the Invention) This invention heats the skin with a resistance heating element that is in close contact with the skin, and measures the temperature of the resistance heating element from changes in the resistance value of the resistance heating element, thereby approximately determining the skin temperature. This device is designed to detect changes in temperature, and has an extremely simple structure that allows heating and temperature measurement with one element, making it useful for investigating the thermal response characteristics of living organisms.
発熱量が一定になるよう抵抗発熱体の駆動電流をフィー
ドバック制御すれば、皮膚温度の変化から生体の熱応答
特性を知ることができる。If the drive current of the resistance heating element is feedback-controlled so that the amount of heat generated remains constant, the thermal response characteristics of the living body can be determined from changes in skin temperature.
温度が一定になるようを抵抗発熱体の駆動１！流をフィ
ードバック制御すれば、発熱量の変化から生体の熱応答
特性を知ることができる。Drive the resistance heating element to keep the temperature constant! If the flow is feedback-controlled, the thermal response characteristics of the living body can be determined from changes in the calorific value.
第１図は熱応答特性計測装置の説明図、符号２は定電力
モードにおける発熱量と温度の関係を示したもの、第３
図は定温度モードにおける関係を示したものである。
１・・・・・・抵抗発熱体 ６・・・・・・乗算器 ７
・・・・・・除算器 ８・・・・・・関数発生器
出順人代珊人 弁理士 佐 竹 良 明手
続
（方式）
１、事件の表示
平成１年特許願第２９６６１３号
２、発明の名称
生体の熱応答特性計測装置
３、補正をする者
事件との関係
名称
４、代理人Fig. 1 is an explanatory diagram of the thermal response characteristic measuring device, numeral 2 shows the relationship between heat generation amount and temperature in constant power mode, and numeral 3 shows the relationship between heat generation amount and temperature in constant power mode.
The figure shows the relationship in constant temperature mode. 1... Resistance heating element 6... Multiplier 7
・・・・・・Divider 8・・・・・・Function generator Output person representative Sanjin Patent attorney Yoshiaki Satake Procedure (method) 1. Indication of the case 1999 Patent Application No. 296613 2. Invention Name: Biological thermal response characteristic measuring device 3, Name of person making the amendment: Name of relation to the case: 4, Agent
Claims (1)
抗発熱体に加わる電圧と電流から抵抗発熱体の抵抗値を
算出する手段（７）と、算出した抵抗値と抵抗温度係数
から該抵抗発熱体の温度を算出する手段（８）を備えた
生体の熱応答特性計測装置。 ２、該抵抗発熱体の発熱量が一定になるよう該抵抗発熱
体の駆動電流がフィードバック制御される請求項１の生
体の熱応答特性計測装置。 ３、該抵抗発熱体の温度が一定になるようを該抵抗発熱
体の駆動電流がフィードバック制御される請求項１の生
体の熱応答特性計測装置。[Claims] 1. A resistance heating element (1) that is brought into close contact with the skin of a living body, a means (7) for calculating the resistance value of the resistance heating element from the voltage and current applied to the resistance heating element, and A biological thermal response characteristic measuring device comprising means (8) for calculating the temperature of the resistance heating element from a resistance value and a resistance temperature coefficient. 2. The biological thermal response characteristic measuring device according to claim 1, wherein the drive current of the resistance heating element is feedback-controlled so that the amount of heat generated by the resistance heating element is constant. 3. The thermal response characteristic measuring device of a living body according to claim 1, wherein the drive current of the resistance heating element is feedback-controlled so that the temperature of the resistance heating element is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1296613A JPH03158129A (en) | 1989-11-15 | 1989-11-15 | Device for measuring heat responsive property of living body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1296613A JPH03158129A (en) | 1989-11-15 | 1989-11-15 | Device for measuring heat responsive property of living body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03158129A true JPH03158129A (en) | 1991-07-08 |
| JPH0442935B2 JPH0442935B2 (en) | 1992-07-15 |
Family
ID=17835820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1296613A Granted JPH03158129A (en) | 1989-11-15 | 1989-11-15 | Device for measuring heat responsive property of living body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03158129A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5202299A (en) * | 1991-12-23 | 1993-04-13 | General Motors Corporation | Catalytic washcoat for treatment of diesel exhaust |
| JPH11206771A (en) * | 1998-01-22 | 1999-08-03 | Agency Of Ind Science & Technol | Contact warmth sensation measurement instrument |
-
1989
- 1989-11-15 JP JP1296613A patent/JPH03158129A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5202299A (en) * | 1991-12-23 | 1993-04-13 | General Motors Corporation | Catalytic washcoat for treatment of diesel exhaust |
| JPH11206771A (en) * | 1998-01-22 | 1999-08-03 | Agency Of Ind Science & Technol | Contact warmth sensation measurement instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0442935B2 (en) | 1992-07-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |