JPH0769434B2 - Human body detection device - Google Patents
Human body detection deviceInfo
- Publication number
- JPH0769434B2 JPH0769434B2 JP62172911A JP17291187A JPH0769434B2 JP H0769434 B2 JPH0769434 B2 JP H0769434B2 JP 62172911 A JP62172911 A JP 62172911A JP 17291187 A JP17291187 A JP 17291187A JP H0769434 B2 JPH0769434 B2 JP H0769434B2
- Authority
- JP
- Japan
- Prior art keywords
- human body
- output
- measurement
- radiant energy
- area
- 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.)
- Expired - Lifetime
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- Geophysics And Detection Of Objects (AREA)
- Radiation Pyrometers (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は銀行のキャッシュカードコーナー等人体の居
残りを検出する場所あるいは自動ドアの開閉のため人体
の存在を検出する場所等に取り付けられる人体検出装置
に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention detects a human body attached to a place such as a cash card corner of a bank where a human body remains to be detected, or a place where the presence of a human body is detected to open and close an automatic door. Regarding the device.
［従来の技術］ 人間の有無を感知して所定の動作を自動的に行うための
人体検出センサとして種々のものが存在している。[Prior Art] There are various types of human body detection sensors for automatically detecting a presence or absence of a person and performing a predetermined operation.
例えば対象となる物体からの放射エネルギーを検出し、
この放射エネルギーの検出値によって人体の有無を検出
する放射温度計もその１つである。For example, detecting the radiant energy from the target object,
One of them is a radiation thermometer that detects the presence or absence of a human body based on the detected value of this radiant energy.
この放射温度計は測定対象からの放射エネルギーをWm、
放射温度計自体の放射エネルギーをWdとする時、下式
（ａ）で表わされる検出出力Weを出力する。This radiation thermometer measures the radiant energy from the measured object by Wm,
When the radiant energy of the radiation thermometer itself is Wd, the detection output We expressed by the following equation (a) is output.
We＝Wm−Wd ……（ａ） ここで測定対象の表面温度をTm、測定対象の放射率をε
ｍ、ステファン・ボルツマン定数をσ、放射温度計自体
の表面温度をTd、放射温度計自体の放射率をεｄとすれ
ば式（ａ）は更に式（ｂ）に変形される。We = Wm-Wd (a) where Tm is the surface temperature of the measurement target and ε is the emissivity of the measurement target.
Letting m be the Stefan-Boltzmann constant, σ, the surface temperature of the radiation thermometer itself be Td, and the emissivity of the radiation thermometer itself be εd, equation (a) can be further transformed into equation (b).
We＝Wm−Wd ＝εｍσTm4−εｄσTd4 ……（ｂ） したがって一般の放射温度計はこのWeを測定し、これに
放射温度計自身のエネルギーεｄσTd4を加算し、これ
を1/ε倍することにより、測定対象を完全放射体（εｄ
＝1,We＝σT4）として、その絶対温度を測定する。 We = Wm-Wd = εmσTm 4 -εdσTd 4 ...... (b) thus ordinary radiation thermometer measures this We, this adds energy IpushirondishigumaTd 4 of the radiation thermometer itself and multiplying 1 / epsilon this Therefore, the measurement target is a perfect radiator (εd
= 1, We = σT 4 ) and measure the absolute temperature.
ここで放射温度計の測定領域において人体が存在し、こ
の人体が動いた場合上記絶対温度が変化するので、この
変化を捉えれば人体の有無を検出することができる。When a human body is present in the measurement area of the radiation thermometer and the human body moves, the absolute temperature changes. Therefore, by grasping this change, the presence or absence of the human body can be detected.
［発明が解決しようとする問題点］ 絶対温度の測定による人間の有無の判別は人間そのもの
から出力される放射エネルギーが微弱であるために測定
範囲自体が広い場合、絶対温度の変化が測定範囲全体の
放射エネルギーに比して相対的に小さくなり、測定範囲
が限定される欠点があった。[Problems to be Solved by the Invention] In the determination of the presence or absence of a person by measuring the absolute temperature, when the measurement range itself is wide because the radiant energy output from the person itself is weak, the change in the absolute temperature is the entire measurement range. However, there is a drawback that the measurement range is limited because it is relatively smaller than the radiant energy of.
更に周囲温度の影響により、人間と温度エネルギーとの
判別が難かしい問題点があった。Further, there is a problem that it is difficult to distinguish between human and temperature energy due to the influence of ambient temperature.
この発明は上記問題点を解決するためになされたもの
で、人間が静止していてもその存在を検出することがで
きるとともに測定範囲を広く取ることができ、しかも周
囲温度の影響を相殺できる人体検出装置を得ることを目
的としている。The present invention has been made to solve the above problems, and can detect the presence of a human even when the human is stationary, can take a wide measurement range, and can cancel the influence of ambient temperature. The purpose is to obtain a detection device.
［問題点を解決するための手段］ このためこの発明は所定の領域を複数の領域に分割し、
分割した複数の領域に対して人体の存在を感知する測定
領域と周囲の影響を相殺するための基準領域とを割り当
て、かつ測定領域及び基準領域から出力される放射エネ
ルギーを検出するエネルギー検出系（１）と、測定領域
に人体が存在しない時、測定領域全体の放射エネルギー
と基準領域全体の放射エネルギー全体の総和を所定の値
に調整しておく調整手段（２）と、この調整手段（２）
から出力される出力と所定の基準値とを比較してその比
較に基づいて人体の検出信号を出力する比較手段（３）
とを備えたことを特徴としている。[Means for Solving Problems] Therefore, the present invention divides a predetermined area into a plurality of areas,
An energy detection system that allocates a measurement region for detecting the presence of a human body and a reference region for canceling the influence of the surroundings to a plurality of divided regions, and detects the radiant energy output from the measurement region and the reference region ( 1), when no human body is present in the measurement area, adjusting means (2) for adjusting the total sum of the radiant energy of the entire measurement area and the total radiant energy of the reference area to a predetermined value, and this adjusting means (2) )
Comparing means (3) for comparing the output from the device with a predetermined reference value and outputting a human body detection signal based on the comparison.
It is characterized by having and.
［作 用］ エネルギー検出系（１）は測定領域から出力される放射
エネルギーと基準領域から出力される放射エネルギーと
を検出して調整手段（２）に出力している。[Operation] The energy detection system (1) detects the radiant energy output from the measurement region and the radiant energy output from the reference region, and outputs it to the adjusting means (2).
調整手段（２）は上記エネルギー検出系（１）から出力
された測定領域及び基準領域の放射エネルギーに対して
測定領域に人体が存在しない時、測定領域全体の放射エ
ネルギーと基準領域全体の放射エネルギー全体の総和を
所定の値となるように調整し、比較手段（３）に出力し
ている。ここで、測定領域に人体が存在すると上記調整
手段（２）から比較手段（３）に出力される出力値は所
定値と異なるので、比較手段（３）に入力される所定の
基準値と上記調整手段（２）から出力される出力値とを
比較した結果として出力される信号は人間の有無を表わ
す信号となる。When the human body does not exist in the measurement area with respect to the radiant energy of the measurement area and the reference area output from the energy detection system (1), the adjusting means (2) radiates the measurement area and the reference area. The total sum is adjusted to a predetermined value and output to the comparison means (3). Here, when a human body is present in the measurement area, the output value output from the adjusting means (2) to the comparing means (3) is different from the predetermined value, so the predetermined reference value input to the comparing means (3) and the above The signal output as a result of comparing the output value output from the adjusting means (2) is a signal representing the presence or absence of a person.
［実施例］ 以下図面に基づいて本発明の一実施例を説明する。[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例を示す構成図で、図において
（１）は所定の領域を複数の領域に分割し、分割した複
数の領域に対して人体の存在を感知する測定領域と周囲
の影響を相殺するための基準領域とに割り当てた測定領
域及び基準領域から出力される放射エネルギーを検出す
るエネルギー検出系、（２）は測定領域に人体が存在し
ない時、測定領域全体の放射エネルギーと基準領域全体
の放射エネルギー全体の総和を所定の値に調整しておく
調整手段、（３）はこの調整手段（２）から出力される
出力と所定の基準値とを比較してその比較に基づき信号
を出力する比較手段である。また（４）は調整手段
（２）の出力を積分して一時的な外乱を除去する積分器
である。FIG. 1 is a configuration diagram showing an embodiment of the present invention. In the figure, (1) is a predetermined region divided into a plurality of regions, and a measurement region for sensing the presence of a human body in the divided regions. An energy detection system that detects the radiant energy output from the measurement area and the reference area allocated to the reference area for canceling the influence of the surroundings. (2) is the radiation of the entire measurement area when there is no human body in the measurement area. Adjusting means for adjusting the total amount of energy and radiant energy of the entire reference region to a predetermined value, (3) compares the output output from the adjusting means (2) with a predetermined reference value, and compares them. It is a comparison means that outputs a signal based on. Further, (4) is an integrator that integrates the output of the adjusting means (2) to remove a temporary disturbance.
ここでエネルギー検出系（１）は各測定領域からの放射
エネルギーを検出する測定領域の数に対応した数の例え
ばサーモパイル等の測定用放射温度計（11）と各基準領
域からの放射エネルギーを検出する基準領域の数に対応
した数の例えばサーモパイル等の基準用放射温度計（1
2）とから構成され、調整手段（２）は測定用放射温度
計（11）から出力される放射エネルギーの総和に対して
は基準用放射温度計（12）の数に対応する増幅率で増幅
する第１の増幅器（21）と、基準放射温度計（12）から
出力される放射エネルギーの総和に対しては測定用放射
温度計（11）の数に対応する増幅率で増幅する第２の増
幅器（22）と、上記第1,第２の増幅器（21），（22）の
出力の減算を行う減算器（23）とで構成され、比較手段
（３）は比較器で構成されている。Here, the energy detection system (1) detects the number of measurement radiation thermometers (11) such as a thermopile and the radiation energy from each reference region corresponding to the number of measurement regions that detect the radiation energy from each measurement region. The number of reference radiation thermometers (1 such as thermopile) corresponding to the number of reference areas
2) and the adjusting means (2) amplifies the sum of the radiant energy output from the measuring radiation thermometer (11) by an amplification factor corresponding to the number of reference radiation thermometers (12). The first amplifier (21) that does this and the second radiation amplifier that amplifies the sum of the radiant energy output from the reference radiation thermometer (12) by an amplification factor corresponding to the number of measurement radiation thermometers (11). It is composed of an amplifier (22) and a subtractor (23) for subtracting the outputs of the first and second amplifiers (21) and (22), and the comparison means (3) is composed of a comparator. .
ここで第２図に基づいて調整手段（２）の調整の方法を
説明すると、人間の有無を検出する測定領域をA1〜A1
1、周囲の影響を相殺するための基準領域をB1とした場
合放射温度計によって得られる１つの測定領域の放射エ
ネルギーWmは（ａ）式より Wm＝εｍσTm4−εａσTda4 ……（ｃ） となるので測定領域A1〜A11全体の総和は ΣWm＝11Wm ……（ｄ） となる。Here, the adjusting method of the adjusting means (2) will be described with reference to FIG.
1. When the reference area for canceling the influence of the surroundings is set to B1, the radiant energy Wm of one measurement area obtained by the radiation thermometer is Wm = εmσTm 4 −εaσTda 4 …… (c) from the equation (a). Therefore, the total sum of the measurement areas A1 to A11 is ΣWm = 11Wm (d).
また基準領域の放射エネルギーWsは Ws＝εｓσTs4−εｓσTdb4となる。The radiant energy Ws in the reference region is Ws = εsσTs 4 −εsσTdb 4 .
ここで測定用放射温度計（11）と基準用放射温度計（1
2）を同一条件にすれば εａ＝εｂ、Tda＝Tdb ……（ｅ） が成立するので、第１の増幅器（21）の増幅率を１倍、
第２の増幅器（22）の増幅率を11倍に設定する。Here, the radiation thermometer for measurement (11) and the radiation thermometer for reference (1
If 2) is the same condition, εa = εb, Tda = Tdb (e) holds, so the amplification factor of the first amplifier (21) is
The amplification factor of the second amplifier (22) is set to 11 times.
次に動作について説明する。Next, the operation will be described.
今測定領域に人間がない場合、第１の増幅器（21）から
出力される出力値はΣWm、第２の増幅器（22）から出力
される出力値は11Wsであるので、減算器（23）の出力は
所定の値すなわち０となっている。この値０は周囲温度
が変化しても変わらない。If there is no human in the measurement area, the output value output from the first amplifier (21) is ΣWm and the output value output from the second amplifier (22) is 11 Ws. The output is a predetermined value, that is, 0. This value 0 does not change even if the ambient temperature changes.
ここで今測定領域A1〜A11に人間が存在するとすれば ΣWm−11Wsキ０＝ΔＷとなり、 このΔＷが一定のレベル以上になって比較器（３）に入
力されるしきい値レベルより高くなる時、比較手段
（３）の人間の存在を示す信号を出力することになる。If a human is present in the measurement area A1 to A11, ΣWm-11Ws will be 0 = ΔW, and this ΔW will be higher than a certain level and higher than the threshold level input to the comparator (3). At this time, the comparison means (3) outputs a signal indicating the presence of a person.
［発明の効果］ 以上説明したようにこの発明は測定領域及び基準領域か
ら出力される放射エネルギーを検出するエネルギー検出
系と、測定領域に人体が存在しない時、測定領域全体の
放射エネルギーと基準領域全体の放射エネルギー全体の
総和を所定の値に調整しておく調整手段と、この調整手
段から出力される出力と所定の基準値とを比較してその
比較に基づいて人体の検出信号を出力する比較手段とを
備えたので、静止状態における人間の存在を検出するこ
とができるとともに周囲の温度変化等周囲の影響を相殺
できる効果がある。[Effects of the Invention] As described above, the present invention provides an energy detection system for detecting radiant energy output from a measurement region and a reference region, and a radiant energy of the entire measurement region and a reference region when a human body does not exist in the measurement region. Adjusting means for adjusting the total sum of the entire radiant energy to a predetermined value and the output from this adjusting means and a predetermined reference value are compared, and a human body detection signal is output based on the comparison. Since the comparison means is provided, there is an effect that the presence of a person in a stationary state can be detected and the influence of the surroundings such as a change in the surrounding temperature can be offset.
第１図はこの発明の一実施例を示す構成図、第２図は測
定領域と基準領域の割り当ての一例を示す図である。 （１）……エネルギー検出系、（２）……調整手段、
（３）……比較手段、（４）……積分器、（11）……測
定用放射温度計、（12）……基準用放射温度計、（21）
……第１の増幅器、（22）……第２の増幅器。FIG. 1 is a configuration diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing an example of allocation of measurement regions and reference regions. (1) …… Energy detection system, (2) …… Adjustment means,
(3) …… Comparison means, (4) …… Integrator, (11) …… Measuring radiation thermometer, (12) …… Reference radiation thermometer, (21)
...... First amplifier, (22) …… Second amplifier.
Claims (1)
た複数の領域に対して人体の存在を感知する測定領域と
周囲の影響を相殺するための基準領域とを割り当て、か
つ測定領域及び基準領域から出力される放射エネルギー
を検出するエネルギー検出系と、測定領域に人体が存在
しない時、測定領域全体の放射エネルギーと基準領域全
体の放射エネルギー全体の総和を所定の値に調整してお
く調整手段と、この調整手段から出力される出力と所定
の基準値とを比較してその比較に基づいて人体の検出信
号を出力する比較手段とを備えたことを特徴とする人体
検出装置。1. A predetermined area is divided into a plurality of areas, a measurement area for sensing the presence of a human body and a reference area for canceling the influence of the surroundings are assigned to the plurality of divided areas, and the measurement area is assigned. And an energy detection system that detects the radiant energy output from the reference area, and when no human body is present in the measurement area, adjust the sum of the radiant energy of the entire measurement area and the radiant energy of the entire reference area to a specified value. A human body detecting apparatus comprising: an adjusting means for setting; and a comparing means for comparing an output output from the adjusting means with a predetermined reference value and outputting a human body detection signal based on the comparison.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62172911A JPH0769434B2 (en) | 1987-07-13 | 1987-07-13 | Human body detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62172911A JPH0769434B2 (en) | 1987-07-13 | 1987-07-13 | Human body detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6416986A JPS6416986A (en) | 1989-01-20 |
| JPH0769434B2 true JPH0769434B2 (en) | 1995-07-31 |
Family
ID=15950629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62172911A Expired - Lifetime JPH0769434B2 (en) | 1987-07-13 | 1987-07-13 | Human body detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0769434B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02210479A (en) * | 1989-02-10 | 1990-08-21 | Minolta Camera Co Ltd | Image forming device |
-
1987
- 1987-07-13 JP JP62172911A patent/JPH0769434B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6416986A (en) | 1989-01-20 |
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