JPH08282358A - Human body detector - Google Patents
Human body detectorInfo
- Publication number
- JPH08282358A JPH08282358A JP7085292A JP8529295A JPH08282358A JP H08282358 A JPH08282358 A JP H08282358A JP 7085292 A JP7085292 A JP 7085292A JP 8529295 A JP8529295 A JP 8529295A JP H08282358 A JPH08282358 A JP H08282358A
- Authority
- JP
- Japan
- Prior art keywords
- seat
- human body
- piezoelectric element
- vibration
- tension
- 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
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 58
- 239000006260 foam Substances 0.000 claims description 57
- 238000001514 detection method Methods 0.000 claims description 28
- 238000009499 grossing Methods 0.000 abstract description 11
- 230000008859 change Effects 0.000 abstract description 9
- 239000000470 constituent Substances 0.000 abstract 1
- 230000001133 acceleration Effects 0.000 description 21
- 238000010586 diagram Methods 0.000 description 19
- 230000035945 sensitivity Effects 0.000 description 16
- 239000004744 fabric Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 230000003321 amplification Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 238000003199 nucleic acid amplification method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- 230000029058 respiratory gaseous exchange Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002033 PVDF binder Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
- B60N2/0021—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
- B60N2/0024—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement for identifying, categorising or investigation of the occupant or object on the seat
- B60N2/0029—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement for identifying, categorising or investigation of the occupant or object on the seat for detecting the motion of the occupant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
- B60N2/0021—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
- B60N2/003—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor mounting location in or on the seat
- B60N2/0032—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor mounting location in or on the seat mounted on springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
- B60N2/0021—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
- B60N2/0035—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor data transmission, e.g. wired connections or wireless transmitters therefor; characterised by the sensor data processing, e.g. seat sensor signal amplification or electric circuits for providing seat sensor information
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2210/00—Sensor types, e.g. for passenger detection systems or for controlling seats
- B60N2210/40—Force or pressure sensors
- B60N2210/48—Piezoelectric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2210/00—Sensor types, e.g. for passenger detection systems or for controlling seats
- B60N2210/50—Inertial sensors
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Passenger Equipment (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は座席上の人体の有無を検
出する人体検出装置に関するものであり、室内の空調や
音響の制御等に利用できる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a human body detecting device for detecting the presence or absence of a human body on a seat, and can be used for air conditioning and sound control in a room.
【０００２】[0002]
【従来の技術】従来この種の在席検出装置は、例えば図
１２のような構成になっていた。すなわち、１は可とう
性のある圧電素子、８は信号処理手段、４は判定手段で
あり、信号処理手段１は圧電素子の出力信号を増幅する
増幅手段８−ａ、増幅手段８−ａの出力のある特定の周
波数成分をろ波するフィルター８−ｂ、フィルター８−
ｂからの出力信号を平滑化する平滑化手段８−ｃからな
っている。2. Description of the Related Art Conventionally, this type of occupancy detection device has a structure as shown in FIG. That is, 1 is a flexible piezoelectric element, 8 is a signal processing means, 4 is a determination means, and the signal processing means 1 is an amplification means 8-a for amplifying the output signal of the piezoelectric element, and an amplification means 8-a. Filter 8-b, which filters a specific frequency component of the output, filter 8-
It comprises smoothing means 8-c for smoothing the output signal from b.
【０００３】ここで、人体が座席１０に着座すると座席
１０の表布２に配設された圧電素子１が変形を受け、圧
電効果により電圧が発生する。この発生信号には、着座
時には着座の衝撃により一時的に大きな信号が現われる
が、人体が安静にしていると人体の心拍や呼吸による細
かな体動信号が現われる。人体がいなければ出力信号は
ゼロになる。座席１０に物が置かれた場合は、置かれた
瞬間には一時的に大きな信号が現われるが、物には人体
のような心拍や呼吸による細かな体動はないので出力信
号はゼロになる。このような圧電素子１からの出力信号
は、信号処理手段８の増幅手段８−ａにより増幅され、
フィルター８−ｂにより必要とする周波数成分に濾波さ
れ、さらに平滑化手段８−ｃにより平滑化されて判定手
段４により人の在、不在を判定する。Here, when a human body is seated on the seat 10, the piezoelectric element 1 arranged on the outer cloth 2 of the seat 10 is deformed, and a voltage is generated by the piezoelectric effect. In this generated signal, a large signal temporarily appears due to the impact of sitting when seated, but when the human body is at rest, small body movement signals due to the heartbeat and breathing of the human body appear. If there is no human body, the output signal will be zero. When an object is placed on the seat 10, a large signal appears momentarily at the moment it is placed, but the output signal becomes zero because the object does not have minute movements due to heartbeat and breathing like the human body. . The output signal from the piezoelectric element 1 is amplified by the amplification means 8-a of the signal processing means 8,
It is filtered by the filter 8-b to a required frequency component, and further smoothed by the smoothing means 8-c, and the presence / absence of a person is determined by the determination means 4.
【０００４】[0004]
【発明が解決しようとする課題】しかし、従来の人体検
出装置では、人体の安静時の微体動による非常に小さな
振動を検出するために圧電素子を座席の人体との接触面
に極力接近させて配設する必要がある。そのために、振
動検出手段には人体に違和感を与えず着座感を損なうこ
とが無いような可とう性や伸縮性のある材料が要求され
る等利用できる振動検出手段が限定されるほか、利用可
能な材質があってもより高い振動検出感度を実現するた
めの構成の変更に対する自由度がほとんどないという欠
点があった。However, in the conventional human body detection device, in order to detect a very small vibration due to a minute movement of the human body at rest, the piezoelectric element is made as close as possible to the contact surface of the seat with the human body. Need to be installed. Therefore, the vibration detection means that can be used is limited in that it requires a flexible or stretchable material that does not give a feeling of discomfort to the human body and does not impair the feeling of sitting. However, there is a drawback in that there is almost no degree of freedom in changing the configuration for realizing higher vibration detection sensitivity even with such materials.
【０００５】そこで、本発明の第１の目的は、着座感へ
の影響の少ない人体検出装置を提供することにある。Therefore, a first object of the present invention is to provide a human body detecting device which has little influence on the feeling of sitting.
【０００６】また、本発明の第２の目的は、バネのない
シートでも着座感への影響の少ない人体検出装置を提供
することにある。A second object of the present invention is to provide a human body detecting device which has a small influence on the sitting feeling even with a seat without a spring.
【０００７】また、本発明の第３の目的は、感度の良い
人体検出装置を提供することにある。A third object of the present invention is to provide a human body detecting device with high sensitivity.
【０００８】さらに、本発明の第４の目的は、シートへ
の着座の際等に起こる衝撃に対して耐性のある人体検出
装置を提供することにある。Further, a fourth object of the present invention is to provide a human body detecting device which is resistant to an impact generated when sitting on a seat.
【０００９】[0009]
【課題を解決するための手段】第１の目的を達成するた
めに本発明の人体検出手段は、座席の人体との接触面か
ら座席に着座した人体がその存在が感じられなくなる距
離以上離れた部分に固定された振動検出手段と、前記振
動検出手段の出力を処理する信号処理手段と、前記信号
処理手段の出力により、前記座席上の人体の有無を判定
する判定手段からなる。第１の目的を達成するために本
発明の人体検出手段は、振動検出手段が座席のシートス
プリングに固定される。In order to achieve the first object, the human body detecting means of the present invention is separated from the contact surface of the seat with the human body by a distance more than the distance at which the human body seated on the seat cannot sense its existence. It comprises a vibration detecting means fixed to the portion, a signal processing means for processing the output of the vibration detecting means, and a judging means for judging the presence or absence of a human body on the seat by the output of the signal processing means. To achieve the first object, in the human body detecting means of the present invention, the vibration detecting means is fixed to the seat spring of the seat.
【００１０】また、第２の目的を達成するために本発明
の人体検出手段は、振動検出手段が可とう性のある圧電
素子を有し、座席のウレタンフォームとシートパンの間
に配設される。Further, in order to achieve the second object, the human body detecting means of the present invention has a flexible piezoelectric element as the vibration detecting means and is arranged between the urethane foam and the seat pan of the seat. It
【００１１】第３の目的を達成するために本発明の人体
検出手段は、振動検出手段が座席のウレタンフォーム下
に設置された帯状体に配設され、前記帯状体は前記ウレ
タンフォームからの荷重を受けることによりある一定以
上の張力がかかるようシートパンの一部に固定される。In order to achieve the third object, in the human body detecting means of the present invention, the vibration detecting means is arranged on a belt-like body installed under the urethane foam of the seat, and the belt-like body is loaded by the urethane foam. By receiving the tension, it is fixed to a part of the seat pan so that a certain tension is applied.
【００１２】第３の目的を達成するために本発明の人体
検出手段は、振動検出手段が圧電素子とシートパンとを
固定することにより圧電素子に張力を印加する張力印加
部を有する。In order to achieve the third object, the human body detecting means of the present invention has a tension applying section for applying tension to the piezoelectric element by the vibration detecting means fixing the piezoelectric element and the seat pan.
【００１３】第４の目的を達成するために本発明の人体
検出手段は、振動検出手段が、予め定められた設定値以
上の張力が圧電素子に印加されぬよう前記圧電素子に印
加される張力を制御する張力制御部を有する。In order to achieve the fourth object, the human body detecting means of the present invention is such that the vibration detecting means applies tension to the piezoelectric element so that tension above a preset value is not applied to the piezoelectric element. It has a tension control unit for controlling.
【００１４】上記第４の目的を達成するために本発明の
人体検出手段は、張力制御部が、圧電素子より寸法が長
く前記圧電素子より伸張性の無い部材からなり、その両
端は前記圧電素子の両端と固定される。In order to achieve the above-mentioned fourth object, in the human body detecting means of the present invention, the tension control section is composed of a member having a dimension longer than the piezoelectric element and less extensible than the piezoelectric element, and both ends thereof are the piezoelectric element. Fixed with both ends of.
【００１５】さらに、上記第４の目的を達成するために
本発明の人体検出手段は、張力制御部が、圧電素子とシ
ートパンとを連結する弾性体からなる。Further, in order to achieve the above-mentioned fourth object, in the human body detecting means of the present invention, the tension control section comprises an elastic body which connects the piezoelectric element and the seat pan.
【００１６】[0016]
【作用】本発明の人体検出装置は上記構成により以下の
ような作用を有する。人体が座席に着座すると座席の人
体との接触面から座席に着座した人体が感じられなくな
る距離以上離れた前記座席の一部分に固定された振動検
出手段に人体の振動が伝達され、前記振動検出手段では
伝達された振動の大きさに応じて信号が発生しこの信号
が信号処理手段に出力される。前記信号処理手段では振
動検出手段の出力を処理して判定手段に出力し、前記判
定手段では前記信号処理手段の出力に基づいて前記座席
上の人体の有無を判定する。The human body detecting device of the present invention has the following actions due to the above configuration. When the human body is seated on the seat, the vibration of the human body is transmitted to the vibration detecting means fixed to a part of the seat which is separated from the contact surface of the seat with the human body by a distance beyond which the human body seated on the seat is not felt, and the vibration detecting means is provided. Then, a signal is generated according to the magnitude of the transmitted vibration, and this signal is output to the signal processing means. The signal processing means processes the output of the vibration detecting means and outputs it to the judging means, and the judging means judges the presence or absence of a human body on the seat based on the output of the signal processing means.
【００１７】本発明の人体検出装置は上記構成により以
下のような作用を有する。人体が座席に着座すると座席
のシートスプリングに固定された振動検出手段に人体の
振動が伝達され、前記振動検出手段では伝達された振動
の大きさに応じて信号が発生しこの信号が信号処理手段
に出力される。前記信号処理手段では振動検出手段の出
力を処理して判定手段に出力し、前記判定手段では前記
信号処理手段の出力に基づいて前記座席上の人体の有無
を判定する。The human body detection device of the present invention has the following operations due to the above configuration. When the human body is seated on the seat, the vibration of the human body is transmitted to the vibration detecting means fixed to the seat spring of the seat, and the vibration detecting means generates a signal according to the magnitude of the transmitted vibration, and this signal is signal processing means. Is output to. The signal processing means processes the output of the vibration detecting means and outputs it to the judging means, and the judging means judges the presence or absence of a human body on the seat based on the output of the signal processing means.
【００１８】本発明の人体検出装置は上記構成により以
下のような作用を有する。人体が座席に着座すると座席
のウレタンフォームとシートパンの間に配設された圧電
素子に人体の振動が伝達され、前記圧電素子では伝達さ
れた振動の大きさに応じて信号が発生しこの信号が信号
処理手段に出力される。前記信号処理手段では前記圧電
素子の出力を処理して判定手段に出力し、前記判定手段
では前記信号処理手段の出力に基づいて前記座席上の人
体の有無を判定する。The human body detection device of the present invention has the following operations due to the above configuration. When the human body is seated on the seat, the vibration of the human body is transmitted to the piezoelectric element arranged between the urethane foam of the seat and the seat pan, and a signal is generated in the piezoelectric element according to the magnitude of the transmitted vibration. Is output to the signal processing means. The signal processing means processes the output of the piezoelectric element and outputs it to the judging means, and the judging means judges the presence or absence of a human body on the seat based on the output of the signal processing means.
【００１９】本発明の人体検出装置は上記構成により以
下のような作用を有する。人体が座席に着座すると座席
のウレタンフォーム下に設置された帯状体に配設された
振動検出手段に人体の振動が伝達され、前記振動検出手
段では伝達された振動の大きさに応じて信号が発生しこ
の信号が信号処理手段に出力される。前記信号処理手段
では圧電素子の出力を処理して判定手段に出力し、前記
判定手段では前記信号処理手段の出力に基づいて前記座
席上の人体の有無を判定する。The human body detection device of the present invention has the following operations due to the above configuration. When the human body is seated on the seat, the vibration of the human body is transmitted to the vibration detection means arranged in the belt-shaped body installed under the urethane foam of the seat, and the vibration detection means outputs a signal according to the magnitude of the transmitted vibration. The generated signal is output to the signal processing means. The signal processing means processes the output of the piezoelectric element and outputs it to the judging means, and the judging means judges the presence or absence of a human body on the seat based on the output of the signal processing means.
【００２０】本発明の人体検出装置は上記構成により以
下のような作用を有する。人体が座席に着座すると張力
印加部により張力を印加されてシートパンに固定された
可とう性の圧電素子に人体の振動が伝達され、前記圧電
素子では伝達された振動の大きさに応じて信号が発生し
この信号が信号処理手段に出力される。前記信号処理手
段では圧電素子の出力を処理して判定手段に出力し、前
記判定手段では前記信号処理手段の出力に基づいて前記
座席上の人体の有無を判定する。The human body detecting apparatus of the present invention has the following operations due to the above configuration. When the human body is seated on the seat, the tension is applied by the tension applying section to transmit the vibration of the human body to the flexible piezoelectric element fixed to the seat pan, and the piezoelectric element outputs a signal according to the magnitude of the transmitted vibration. Occurs and this signal is output to the signal processing means. The signal processing means processes the output of the piezoelectric element and outputs it to the judging means, and the judging means judges the presence or absence of a human body on the seat based on the output of the signal processing means.
【００２１】本発明の人体検出装置は上記構成により以
下のような作用を有する。人体が座席に着座すると張力
印加部により張力を印加されてシートパンに固定された
可とう性の圧電素子に人体の振動が伝達され、前記圧電
素子では伝達された振動の大きさに応じて信号が発生し
この信号が信号処理手段に出力される。前記信号処理手
段では圧電素子の出力を処理して判定手段に出力し、前
記判定手段では前記信号処理手段の出力に基づいて前記
座席上の人体の有無を判定する。着座時の衝撃等により
圧電素子に印加される過大張力に対しては、張力制御部
により予め定められた設定値以上の張力が圧電素子に印
加されぬよう圧電素子に印加される張力が制御される。The human body detecting apparatus of the present invention has the following operations with the above configuration. When the human body is seated on the seat, the tension is applied by the tension applying section to transmit the vibration of the human body to the flexible piezoelectric element fixed to the seat pan, and the piezoelectric element outputs a signal according to the magnitude of the transmitted vibration. Occurs and this signal is output to the signal processing means. The signal processing means processes the output of the piezoelectric element and outputs it to the judging means, and the judging means judges the presence or absence of a human body on the seat based on the output of the signal processing means. With respect to excessive tension applied to the piezoelectric element due to a shock when seated, the tension control section controls the tension applied to the piezoelectric element so that the tension above the preset value is not applied to the piezoelectric element. It
【００２２】本発明の人体検出装置は上記構成により以
下のような作用を有する。人体が座席に着座すると張力
印加部により張力を印加されてシートパンに固定された
可とう性の圧電素子に人体の振動が伝達され、前記圧電
素子では伝達された振動の大きさに応じて信号が発生し
この信号が信号処理手段に出力される。前記信号処理手
段では圧電素子の出力を処理して判定手段に出力し、前
記判定手段では前記信号処理手段の出力に基づいて前記
座席上の人体の有無を判定する。着座時の衝撃等により
圧電素子に印加される過大張力に対しては、圧電素子よ
り寸法が長く前記圧電素子より伸張性の無い部材からな
り、その両端は前記圧電素子の両端と固定された張力制
御部により、予め定められた設定値以上の張力が圧電素
子に印加されぬよう圧電素子に印加される張力が制御さ
れる。The human body detection device of the present invention has the following actions due to the above configuration. When the human body is seated on the seat, the tension is applied by the tension applying section to transmit the vibration of the human body to the flexible piezoelectric element fixed to the seat pan, and the piezoelectric element outputs a signal according to the magnitude of the transmitted vibration. Occurs and this signal is output to the signal processing means. The signal processing means processes the output of the piezoelectric element and outputs it to the judging means, and the judging means judges the presence or absence of a human body on the seat based on the output of the signal processing means. With respect to the excessive tension applied to the piezoelectric element due to the impact at the time of sitting, it is composed of a member having a dimension longer than the piezoelectric element and less extensible than the piezoelectric element, and both ends of the tension fixed to both ends of the piezoelectric element. The control unit controls the tension applied to the piezoelectric element so that the tension equal to or higher than a predetermined set value is not applied to the piezoelectric element.
【００２３】本発明の人体検出装置は上記構成により以
下のように作用を有する。人体が座席に着座すると張力
印加部により張力を印加されてシートパンに固定された
可とう性の圧電素子に人体の振動が伝達され、前記圧電
素子では伝達された振動の大きさに応じて信号が発生し
この信号が信号処理手段に出力される。前記信号処理手
段では圧電素子の出力を処理して判定手段に出力し、前
記判定手段では前記信号処理手段の出力に基づいて前記
座席上の人体の有無を判定する。着座時の衝撃等により
圧電素子に印加される過大張力に対しては、前記圧電素
子とシートパンとを連結した弾性体からなる張力制御部
により予め定められた設定値以上の張力が圧電素子に印
加されぬよう圧電素子に印加される張力が制御される。The human body detection device of the present invention has the following operations with the above configuration. When the human body is seated on the seat, the tension is applied by the tension applying section to transmit the vibration of the human body to the flexible piezoelectric element fixed to the seat pan, and the piezoelectric element outputs a signal according to the magnitude of the transmitted vibration. Occurs and this signal is output to the signal processing means. The signal processing means processes the output of the piezoelectric element and outputs it to the judging means, and the judging means judges the presence or absence of a human body on the seat based on the output of the signal processing means. With respect to the excessive tension applied to the piezoelectric element due to the impact at the time of sitting, the piezoelectric element is provided with a tension equal to or more than a preset value by the tension control unit made of an elastic body connecting the piezoelectric element and the seat pan. The tension applied to the piezoelectric element is controlled so that it is not applied.
【００２４】[0024]
【実施例】本発明の第１の実施例を図面とともに説明す
る。図１に本発明の第１の実施例の座席の構成図、図２
にブロック図を示す。図中１は振動検出手段、２は表
布、３はウレタンフォーム、４はシートスプリング、５
はシートフレーム、６は電源、７は抵抗回路、８は信号
処理手段、９は判定手段である。ここで、信号処理手段
８は増幅手段８−ａ、フィルター８−ｂ、平滑下手段８
−ｃからなる。本実施例では振動検出手段１として振動
により生ずる加速度により抵抗体をひずませ、このひず
みを抵抗変化として電気信号に変換する加速度センサー
１’を用いており、この加速度センサー１’は、座席１
０の人体との接触面から表布２、ウレタンフォーム３を
介して一定距離ｒ以上離れた座席１０を構成するシート
スプリング４上に固定されている。ここで、ｒは、座席
１０に着座した人体に加速度センサー１''の存在が人体
に感じられなくなる距離で、加速度センサー１''の外郭
の硬度が高いほど、ウレタンフォーム３が柔らかいほど
長くなる。本実施例ではウレタンフォーム３の下にある
シートスプリング４に固定されているが、シートスプリ
ング４は一般に金属製の線材を使用して構成されている
ため、座席はすでにこのシートスプリング４を着座した
人体に感じられなくなる様に構成されており、同様なか
たさをもつものであればシートスプリングに固定してお
れば人体に感じられることはなく、形状さえ適切であれ
ばほとんどの物は着座感を阻害することなしにこの位置
に配置することが可能である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram of a seat according to a first embodiment of the present invention, FIG.
A block diagram is shown in. In the figure, 1 is a vibration detecting means, 2 is a cover cloth, 3 is urethane foam, 4 is a seat spring, 5
Is a seat frame, 6 is a power source, 7 is a resistance circuit, 8 is a signal processing means, and 9 is a determination means. Here, the signal processing means 8 is an amplification means 8-a, a filter 8-b, and a smoothing means 8
-C. In the present embodiment, as the vibration detecting means 1, an acceleration sensor 1'which distorts a resistor by acceleration generated by vibration and converts this strain into an electric signal as a resistance change is used. The acceleration sensor 1'is a seat 1
It is fixed on a seat spring 4 which constitutes a seat 10 separated from the contact surface with the human body of 0, which is a predetermined distance r or more, through a surface cloth 2 and a urethane foam 3. Here, r is a distance at which the presence of the acceleration sensor 1 ″ cannot be sensed by the human body seated on the seat 10, and the higher the hardness of the outer contour of the acceleration sensor 1 ″ and the softer the urethane foam 3, the longer. . In this embodiment, it is fixed to the seat spring 4 below the urethane foam 3, but since the seat spring 4 is generally constructed by using a metal wire rod, the seat has already seated this seat spring 4. It is structured so that it cannot be felt by the human body, and if it has the same hardness, it will not be felt by the human body if it is fixed to the seat spring, and if the shape is appropriate, most things will have a sitting feeling. It is possible to place it in this position without obstruction.
【００２５】図３に加速度センサー１’の断面図を示
す。図に示すようにこの加速度センサー１’は梁部１
１、梁部１１を支持する支持台１２、梁部１１に配設さ
れた抵抗体１３、抵抗体の両端に接続された端子１４、
これらの構造物の基板となるベース１５、構造物を保護
するケース１６、及び、ケース内の空間を埋める液体の
充填材１７からなる。本実施例ではこのような加速度セ
ンサー１’を図１に示すようにシートスプリング４の４
箇所に設置し人体の振動を検出している。また図１に示
すように、加速度センサー１’は背もたれ側に設置して
人体の振動を検出してもよい。FIG. 3 shows a sectional view of the acceleration sensor 1 '. As shown in the figure, this acceleration sensor 1'is
1, a support 12 for supporting the beam portion 11, a resistor 13 arranged on the beam portion 11, terminals 14 connected to both ends of the resistor body,
The base 15 serves as a substrate for these structures, a case 16 for protecting the structures, and a liquid filler 17 for filling the space inside the case. In the present embodiment, such an acceleration sensor 1'is installed in the seat spring 4 as shown in FIG.
It is installed at a location to detect human vibration. Further, as shown in FIG. 1, the acceleration sensor 1 ′ may be installed on the backrest side to detect vibration of the human body.
【００２６】上記構成による作用を説明する。座席１０
に人体が着座するとその振動が座席１０の表布２、ウレ
タンフォーム３を経てシートスプリング４に伝達されて
振動し、この振動によりシートスプリング４に固定され
た加速度センサー１’も振動し、この振動の加速度を受
け加速度センサー１’内にある梁部１１によりセンサー
が受けた振動が増幅されて梁部１１の表面に固定された
抵抗体１３に伝達され、梁部１１の振動により生ずるひ
ずみにより抵抗体１３の抵抗が変化する。人体が安静に
しても人体には呼吸や心拍によるわずかな微体動が発生
し、この微体動による振動も上記の経路を経て抵抗体の
抵抗変化を生じさせる。抵抗体１３には、あらかじめ電
源６から抵抗回路７を経て電圧が印加されており、加速
度センサー１’がシートスプリング４の振動による加速
度を受けて抵抗体１３の抵抗が変化すると、抵抗体１３
の両端の電圧が変化し、この電圧変化が信号処理手段８
の増幅手段８−ａにより増幅され、フィルター８−ｂに
より必要とする周波数成分にろ波され、さらに平滑化手
段８−ｃにより平滑化されて判定手段９に出力され、判
定手段９により座席１０上の人体の有無が判定される。The operation of the above configuration will be described. Seat 10
When a human body is seated on the seat 10, the vibration is transmitted to the seat spring 4 through the outer cloth 2 and the urethane foam 3 of the seat 10 and vibrates, and the vibration also vibrates the acceleration sensor 1'fixed to the seat spring 4. The vibration received by the sensor is amplified by the beam portion 11 in the acceleration sensor 1 ′, which is transmitted to the resistor 13 fixed to the surface of the beam portion 11, and is resisted by the strain generated by the vibration of the beam portion 11. The resistance of the body 13 changes. Even if the human body is at rest, slight human body movements due to respiration and heartbeat are generated in the human body, and the vibrations caused by the human body movements also cause the resistance change of the resistor through the above-mentioned path. A voltage is previously applied to the resistor 13 from the power source 6 through the resistor circuit 7, and when the acceleration sensor 1 ′ receives the acceleration due to the vibration of the seat spring 4 and the resistance of the resistor 13 changes, the resistor 13
The voltage across both ends of the signal changes, and this voltage change changes
Of the seat 10 after being amplified by the amplifying means 8-a, filtered by the filter 8-b to a required frequency component, further smoothed by the smoothing means 8-c, and output to the judging means 9. The presence or absence of the upper body is determined.
【００２７】ここで用いた加速度センサー１’は、振動
を梁部１１により増幅する構成であるが、微弱な振動で
も検出可能とするために梁部１１の一部に溝１８を設け
梁部１１が振動しやすくしているが、このような構成で
は梁部１１の強度が落ちるため、梁部１１を着座時に外
部から加えられる衝撃から保護するためにケース１６を
堅牢な構造とすることが必要となる。そのため、表布２
の近くに設置すると着座した人体に違和感を与え着座感
を悪くしてしまうため、従来の構成では表布２の近くに
設置することができなかったが、本実施例では表布２か
ら一定距離ｒ離れたシートスプリング４に固定すること
により着座感に影響をなくすことができている。この場
合、表布２から一定距離ｒだけ離れている分加速度セン
サー１’に加えられる振動も小さくなるが、形状や材質
が着座感にほとんど影響しないため、加速度センサー
１’の構成の自由度が大きく、抵抗体１３を大きくする
等により構成による感度向上策が可能になり、これによ
り、表布２に近接させなくても人体の検出に十分な感度
を得ることができる。本実施例では、梁部１１に溝部１
８を構成するだけでなく、梁部１１の先におもり１９を
設けることにより加速度センサー１’の感度を向上させ
ている。The acceleration sensor 1'used here has a structure in which vibration is amplified by the beam portion 11. However, in order to detect even weak vibration, a groove 18 is provided in a part of the beam portion 11 to form the beam portion 11. Although it is easy to vibrate, since the strength of the beam portion 11 is reduced in such a configuration, the case 16 needs to have a robust structure in order to protect the beam portion 11 from an impact applied from the outside when sitting. Becomes Therefore, the outer cloth 2
If it is installed near the table cloth 2, the seated human body will feel uncomfortable and the seating feeling will be deteriorated. Therefore, it cannot be installed near the table cloth 2 in the conventional configuration. By fixing the seat spring 4 away from the seat spring 4, the seating feeling can be eliminated. In this case, the vibration applied to the acceleration sensor 1'becomes smaller than the outer cloth 2 by the constant distance r, but the shape and the material hardly affect the seating feeling, so that the degree of freedom of the configuration of the acceleration sensor 1'is increased. By increasing the size of the resistor 13, the sensitivity can be improved by the configuration. As a result, it is possible to obtain sufficient sensitivity for detecting the human body without bringing it close to the surface cloth 2. In this embodiment, the beam portion 11 has a groove portion 1
In addition to the structure of 8, the weight 19 is provided at the tip of the beam portion 11 to improve the sensitivity of the acceleration sensor 1 '.
【００２８】上記作用により本発明は、座面から一定距
離以上離れた座席の一部分に振動検出手段を固定して人
体の振動を検出するので、振動検出手段の構成の自由度
を大きくすることが可能で、着座感への影響が少なく、
かつ、人体を確実に検出できる人体検出手段を提供でき
るといった効果がある。According to the above operation, the present invention detects the vibration of the human body by fixing the vibration detecting means to a part of the seat which is separated from the seat surface by a certain distance or more, so that the degree of freedom of the constitution of the vibration detecting means can be increased. It is possible and has little effect on the feeling of sitting,
In addition, there is an effect that it is possible to provide a human body detection unit that can reliably detect the human body.
【００２９】また上記作用により本発明は、振動検出手
段１をウレタンフォーム３の下にあるシートスプリング
４に固定しているが、シートスプリング４は一般に金属
製の線材を使用して構成されており、座席はすでにこの
シートスプリング４を着座した人体に感じられなくなる
様に構成されているので、振動検出手段１がシートスプ
リング４と同様なかたさをもつのであれば、シートスプ
リングに固定しておれば人体に感じられることはない。
したがって、形状さえ適切であればほとんどの振動検出
手段１は着座感を阻害することなしにこの位置に配置す
ることが可能であり、振動検出手段のシートへの配設を
行う上で、設計の自由度がさらに向上するといった効果
がある。Further, according to the present invention, the vibration detecting means 1 is fixed to the seat spring 4 below the urethane foam 3 according to the above-mentioned action, but the seat spring 4 is generally constituted by using a metal wire rod. Since the seat is configured so that it cannot be felt by the human body who has already seated this seat spring 4, if the vibration detecting means 1 has the same hardness as the seat spring 4, it should be fixed to the seat spring. It is not felt by the human body.
Therefore, as long as the shape is appropriate, most of the vibration detecting means 1 can be arranged at this position without disturbing the seating feeling. This has the effect of further increasing the degree of freedom.
【００３０】なお、本実施例では振動検出手段として加
速度センサーを用いているが、加速度センサー以外にも
圧電素子など、変位やひずみ等の振動による物理的な変
化を電気信号に変換することができ、かつ、その構成に
より感度向上を図ることの可能なものであればいかなる
ものでもよく、振動検出手段を限定することを発明の主
旨とするものではない。Although the acceleration sensor is used as the vibration detecting means in the present embodiment, other than the acceleration sensor, a piezoelectric element or the like can convert a physical change due to vibration such as displacement or strain into an electric signal. Further, any structure may be used as long as the structure can improve the sensitivity, and the purpose of the invention is not to limit the vibration detecting means.
【００３１】次に、本発明の第２の実施例を図面と共に
説明する。図４に本実施例の人体検出装置を用いた座席
の構成図、図５に本実施例の人体検出装置のブロック図
を示す。本実施例が第１の実施例と相違する点は、振動
検出手段１が可とう性のある圧電素子であり、ウレタン
フォーム３とシートパン２０の間に配設されている点に
ある。圧電素子１''は、圧電材例えばポリフッ化ビニリ
デン（ＰＶＤＦ）をフィルム状にし、その両面に金属電
極を蒸着させ、分極処理を行ったものをＰＥＴフィルム
で表面保護し帯状に成形したものを使用する。この場
合、分極の方向性によるが、一般には圧電素子１''の厚
み方向に分極することにより、圧電素子１''は帯状の長
手方向の張力変化に対して電圧出力を発生するものであ
り、本実施例でもこの構成のものを使用している。Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a block diagram of a seat using the human body detecting apparatus of this embodiment, and FIG. 5 is a block diagram of the human body detecting apparatus of this embodiment. This embodiment is different from the first embodiment in that the vibration detecting means 1 is a flexible piezoelectric element and is arranged between the urethane foam 3 and the seat pan 20. For the piezoelectric element 1 ″, a piezoelectric material such as polyvinylidene fluoride (PVDF) is formed into a film, metal electrodes are vapor-deposited on both surfaces of the film, polarization processing is performed, the surface is protected by a PET film, and the film is formed into a band shape. To do. In this case, depending on the directionality of the polarization, the piezoelectric element 1 ″ generally generates a voltage output in response to a change in tension in the longitudinal direction of the strip by polarization in the thickness direction of the piezoelectric element 1 ″. In this embodiment also, this structure is used.
【００３２】通常の座席には、図４に示すようにシート
パン２０に直接ウレタンフォーム３が埋め込まれたもの
を表布２で覆うという簡単な構成となっている物が多
く、第１の実施例のようにシートスプリング４のある場
合は少ない。図１のようにシートスプリング４のない座
席１０では着座感へ影響を及ぼさずに人体の振動を検出
するために振動検出手段１はウレタンフォーム３内に挿
入されるか、または、ウレタンフォーム３の表面に固定
されて設置されることになるが、一般にウレタンフォー
ム３は経時変化によりもろくなりやすく、ウレタンフォ
ーム３に保持された剛体は一定時間経過すると着座時の
衝撃に耐えられずウレタンフォーム３の割れを引き起こ
し、振動検出手段１がウレタンフォーム３の固定位置か
ら脱落しやすくなる等の欠点があった。このような問題
点を解決するために本実施例は、振動検出手段１は可と
う性のある圧電素子であり、ウレタンフォーム３とシー
トパン２０の間に配設される。Many ordinary seats have a simple construction in which the urethane foam 3 is directly embedded in the seat pan 20 as shown in FIG. As in the example, there are few seat springs 4. In the seat 10 without the seat spring 4 as shown in FIG. 1, the vibration detecting means 1 is inserted into the urethane foam 3 in order to detect the vibration of the human body without affecting the seating feeling. Although it will be fixed and installed on the surface, generally, the urethane foam 3 tends to become brittle due to aging, and the rigid body held by the urethane foam 3 cannot withstand the impact at the time of sitting after a certain period of time, There is a defect that the cracks are caused and the vibration detecting means 1 is easily dropped from the fixing position of the urethane foam 3. In order to solve such a problem, in this embodiment, the vibration detecting means 1 is a flexible piezoelectric element and is arranged between the urethane foam 3 and the seat pan 20.
【００３３】上記構成による作用を説明する。座席１０
に人体が着座するとその振動が座席１０の表布２を経て
ウレタンフォーム３に伝達されて振動し、この振動によ
りウレタンフォーム３とシートパン２０に挟まれた部分
にある圧電素子１''が振動して変形を受け、振動の大き
さに応じた電圧を発生する。人体が安静にしても人体に
は呼吸や心拍によるわずかな微体動が発生し、この微体
動による振動も上記の経路を経て圧電素子１''から振動
の大きさに応じた電圧を発生させる。ここで、圧電素子
１''は、可とう性のある圧電素子１''を用いるので、凹
凸のあるウレタンフォーム３の表面に接して配設するこ
とができ、ウレタンフォーム３とシートパン２０のわず
かな隙間に発生するウレタンフォーム３の振動を効率的
に検出して電圧に変換することができる。この圧電素子
１''の発生電圧は信号処理手段８の増幅手段８−ａによ
り増幅され、フィルター８−ｂにより必要とする周波数
成分に濾波され、さらに平滑化手段８−ｃにより平滑化
されて判定手段９に出力され、判定手段９により座席１
０上の人体の有無が判定される。The operation of the above configuration will be described. Seat 10
When a human body is seated on the seat 10, the vibration is transmitted to the urethane foam 3 via the outer cloth 2 of the seat 10 and vibrates. Due to this vibration, the piezoelectric element 1 '' in the portion sandwiched between the urethane foam 3 and the seat pan 20 vibrates. Then, it is deformed and generates a voltage according to the magnitude of the vibration. Even when the human body is at rest, slight human body movements due to breathing and heartbeats occur in the human body, and the vibrations due to the minute body movements also generate a voltage according to the magnitude of the vibration from the piezoelectric element 1 '' through the above path. Let Here, since the piezoelectric element 1 ″ uses the flexible piezoelectric element 1 ″, it can be disposed in contact with the surface of the urethane foam 3 having irregularities, and the urethane foam 3 and the seat pan 20 can be arranged. Vibration of the urethane foam 3 generated in a slight gap can be efficiently detected and converted into a voltage. The voltage generated by the piezoelectric element 1 '' is amplified by the amplification means 8-a of the signal processing means 8, filtered by the filter 8-b to the required frequency component, and further smoothed by the smoothing means 8-c. The seat 1 is output to the judging means 9 and is judged by the judging means 9.
The presence or absence of a human body on 0 is determined.
【００３４】上記作用により本発明は、可とう性のある
圧電素子を用いるので、シートスプリングのないシート
でも着座感への影響を少くでき、またウレタンフォーム
３の一部に応力が集中することが少なく、経時変化によ
りウレタンフォーム３がもろくなっても圧電素子１''に
よる割れの発生も少なくなるといった効果がある。By virtue of the above operation, the present invention uses the flexible piezoelectric element, so that even a seat without a seat spring can reduce the influence on the seating feeling, and stress can be concentrated on a part of the urethane foam 3. Even if the urethane foam 3 becomes brittle due to a change with time, there is an effect that the occurrence of cracks due to the piezoelectric element 1 ″ is reduced.
【００３５】上記実施例の圧電素子１''はＰＶＤＦやＰ
ＥＴ等で構成され、強度のある部材を使用しているが、
振動伝達を阻害しない範囲で圧電素子１''を補強材で包
んでウレタンフォーム３とシートパン２０の間に配設し
たり、シートパン側から補強材をあてて前記補強材と圧
電素子１''をともにウレタンフォーム３の下面に接着す
る構成としてもよく、さらに強度が増す。The piezoelectric element 1 ″ of the above embodiment is PVDF or P
Although it is made of ET and uses strong members,
The piezoelectric element 1 ″ is wrapped with a reinforcing material and arranged between the urethane foam 3 and the seat pan 20 within a range that does not hinder vibration transmission, or a reinforcing material is applied from the seat pan side to the reinforcing material and the piezoelectric element 1 ′. ′ May be adhered together to the lower surface of the urethane foam 3 to further increase the strength.
【００３６】次に、本発明の第３の実施例を図面と共に
説明する。図６に本実施例の人体検出装置の振動検出手
段の構成図を、図７に同装置を用いた座席の構成図を示
す。本実施例が第２の実施例と相違する点は、振動検出
手段１が座席１０のウレタンフォーム３の下に設置され
た帯状体２１に配設され、帯状体２１はウレタンフォー
ム３からの荷重を受けることによりある一定以上の張力
がかかるよう端部２２、２３がシートパン２０の一部に
固定された点にある。その他の構成は第２の実施例と同
様なので詳細な説明は省略する。Next, a third embodiment of the present invention will be described with reference to the drawings. FIG. 6 shows a block diagram of the vibration detecting means of the human body detecting apparatus of this embodiment, and FIG. 7 shows a block diagram of a seat using the same. This embodiment is different from the second embodiment in that the vibration detecting means 1 is arranged on a belt-shaped body 21 installed below the urethane foam 3 of the seat 10, and the belt-shaped body 21 is loaded by the urethane foam 3. The end portions 22 and 23 are fixed to a part of the seat pan 20 so that a certain tension or more is applied by receiving. The other structure is similar to that of the second embodiment, and detailed description thereof will be omitted.
【００３７】ここで、振動検出手段１は第２の実施例と
同じ圧電素子１''から構成されるが、小型の加速度セン
サーやひずみケージ等、変位やひずみ等の振動による物
理的な変化を電気信号に変換することができるものであ
ればいかなるものでもよく、振動検出手段を限定するこ
とを発明の主旨とするものではない。Here, the vibration detecting means 1 is composed of the same piezoelectric element 1 '' as that of the second embodiment, but a small acceleration sensor, strain cage or the like is used to detect physical changes due to vibration such as displacement or strain. Anything can be used as long as it can be converted into an electric signal, and limiting the vibration detecting means is not the gist of the invention.
【００３８】上記構成による作用を説明する。座席１０
に人体が着座するとその振動が座席１０の表布２を経て
ウレタンフォーム３に伝達されて振動し、この振動によ
り帯状体２１も振動する。この際、帯状体２１はウレタ
ンフォーム３からの荷重を受けることによりある一定以
上の張力がかかるようシートパン２０の一部に固定され
ているので、帯状体２１にはウレタンフォーム３の振動
が確実に伝達されるとともに、圧電素子１''には接して
いるウレタンフォーム３と帯状体２１との双方の振動が
効率的に伝達される。圧電素子１''が振動して変形を受
けると、振動の大きさに応じた電圧を発生する。人体が
安静にしても人体には呼吸や心拍によるわずかな微体動
が発生し、この微体動による振動も上記の経路を経て圧
電素子１''から振動の大きさに応じた電圧を発生させ
る。この圧電素子１''の発生電圧は信号処理手段８の増
幅手段８−ａにより増幅され、フィルター８−ｂにより
必要とする周波数成分に濾波され、さらに平滑化手段８
−ｃにより平滑化されて判定手段９に出力され、判定手
段９により座席１０上の人体の有無が判定される。The operation of the above configuration will be described. Seat 10
When a human body is seated on the seat 10, the vibration is transmitted to the urethane foam 3 via the outer cloth 2 of the seat 10 and vibrates, and the belt 21 is also vibrated by this vibration. At this time, since the band-shaped body 21 is fixed to a part of the seat pan 20 so that a certain amount of tension or more is applied by receiving the load from the urethane foam 3, the band-shaped body 21 is surely vibrated. And the vibration of both the urethane foam 3 and the strip 21 that are in contact with the piezoelectric element 1 ″ are efficiently transmitted. When the piezoelectric element 1 ″ vibrates and is deformed, a voltage corresponding to the magnitude of the vibration is generated. Even when the human body is at rest, slight human body movements due to breathing and heartbeats occur in the human body, and the vibrations due to the minute body movements also generate a voltage according to the magnitude of the vibration from the piezoelectric element 1 '' through the above path. Let The voltage generated by the piezoelectric element 1 ″ is amplified by the amplification means 8-a of the signal processing means 8, filtered by the filter 8-b to the required frequency component, and further smoothed by the smoothing means 8.
It is smoothed by -c and output to the determination means 9, and the determination means 9 determines the presence / absence of a human body on the seat 10.
【００３９】上記作用により、第２の実施例では圧電素
子１''をウレタンフォーム３とシートパン２０の間に配
設しているだけなので、例えば圧電素子１''の設置方法
やシートウレタン３の寸法ばらつき等により圧電素子
１''に振動が効率的に伝達されないという課題があった
が、本実施例によれば、帯状体２１がウレタンフォーム
３からの荷重を受けることによりある一定以上の張力が
かかるようシートパン２０の一部に固定されているの
で、帯状体２１にはウレタンフォーム３の振動が確実に
伝達されるとともに、圧電素子１''には接しているウレ
タンフォーム３と帯状体２１との双方の振動が効率的に
伝達され、感度が向上するといった効果がある。By virtue of the above operation, in the second embodiment, the piezoelectric element 1 '' is simply arranged between the urethane foam 3 and the seat pan 20, so that the method for installing the piezoelectric element 1 '' and the sheet urethane 3 are used. However, there is a problem that vibration is not efficiently transmitted to the piezoelectric element 1 ″ due to the dimensional variation of the above. However, according to the present embodiment, the belt-like body 21 receives a load from the urethane foam 3 and is above a certain level. Since it is fixed to a part of the seat pan 20 so that tension is applied, the vibration of the urethane foam 3 is reliably transmitted to the belt-shaped body 21, and the urethane foam 3 and the belt-shaped body which are in contact with the piezoelectric element 1 ″ are in contact with each other. Vibrations of both the body 21 are efficiently transmitted, and the sensitivity is improved.
【００４０】次に、本発明の第４の実施例を図面と共に
説明する。図８に本実施例の人体検出装置の振動検出手
段の構成図を、図９に同装置を用いた座席の構成図を示
す。本実施例が第３の実施例と相違する点は、振動検出
手段１が圧電素子１''とシートパン３とを固定すること
により圧電素子１''に張力を印加する張力印加部２４、
２５を有した点にある。張力印加部２４、２５はシート
パン２０との固定部分を兼用しており、座席１０が組み
立てられた時点で圧電素子１''にはウレタンフォーム３
からの荷重とシートパン２０への固定により一定の張力
が印加される構成になっている。その他の構成は第２の
実施例と同様なので詳細な説明は省略する。Next, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 8 shows a block diagram of the vibration detecting means of the human body detecting apparatus of this embodiment, and FIG. 9 shows a block diagram of a seat using the same. This embodiment is different from the third embodiment in that the vibration detecting means 1 applies tension to the piezoelectric element 1 ″ by fixing the piezoelectric element 1 ″ and the seat pan 3 to each other.
25 points. The tension applying portions 24 and 25 also serve as a fixed portion with the seat pan 20, and when the seat 10 is assembled, the urethane foam 3 is attached to the piezoelectric element 1 ″.
The load is applied to the seat pan 20 and the seat pan 20 is fixed to the seat pan 20, so that a constant tension is applied. The other structure is similar to that of the second embodiment, and detailed description thereof will be omitted.
【００４１】上記構成により、圧電素子１''はその両端
が張力印加部２４、２５を介してシートパン２０に固定
されおり、ウレタンフォーム３とシートパン２０に挟ま
れた時に一定の張力が印加される様に設置されている
が、これは第２の実施例の説明で述べたように、この手
の圧電素子は長手方向の張力変化に対して電圧出力を発
生するものであり、その本来の性能をより有効に活かす
ためである。さらに、この圧電素子１''がウレタンフォ
ーム３とシートパン２０に挟まれているためにウレタン
フォーム３や、シートパン２０との間の摩擦によりその
振動による変形が押さえられているのを、張力をかける
ことにより圧電素子１''の振動による変形を圧電素子
１''全体に伝達しやすくし、小さな振動でもその振動に
より発生する電荷量を大きくすることによって圧電素子
１''の振動に対する感度を向上させている。この圧電素
子１''の発生電圧は信号処理手段８の増幅手段８−ａに
より増幅され、フィルター８−ｂにより必要とする周波
数成分に濾波され、さらに平滑化手段８−ｃにより平滑
化されて判定手段９に出力され、判定手段９により座席
１０上の人体の有無が判定される。With the above structure, both ends of the piezoelectric element 1 '' are fixed to the seat pan 20 via the tension applying portions 24 and 25, and a constant tension is applied when sandwiched between the urethane foam 3 and the seat pan 20. However, as described in the explanation of the second embodiment, this piezoelectric element of this type produces a voltage output in response to a change in tension in the longitudinal direction. This is to make more effective use of the performance of. Further, since the piezoelectric element 1 ″ is sandwiched between the urethane foam 3 and the seat pan 20, the deformation caused by the vibration is suppressed by the friction between the urethane foam 3 and the seat pan 20. Is applied to make it easier to transmit the deformation caused by the vibration of the piezoelectric element 1 ″ to the entire piezoelectric element 1 ″, and to increase the amount of charge generated by the vibration even with a small vibration, the sensitivity to the vibration of the piezoelectric element 1 ″. Is improving. The voltage generated by the piezoelectric element 1 '' is amplified by the amplification means 8-a of the signal processing means 8, filtered by the filter 8-b to the required frequency component, and further smoothed by the smoothing means 8-c. It is output to the determination means 9, and the determination means 9 determines the presence or absence of a human body on the seat 10.
【００４２】上記作用により本発明は、張力印加部２
４、２５により圧電素子１''に張力を印加しているの
で、圧電素子１''本来の圧電性能を活かすことができる
とともに、ウレタンフォーム３やシートパン２０との間
の摩擦によりその振動が押さえられていても、振動によ
り発生する電荷量を大きくすることことができ、圧電素
子の振動に対する感度を向上させることができるといっ
た効果がある。Due to the above operation, the present invention provides the tension applying section 2
Since tension is applied to the piezoelectric element 1 ″ by means of 4 and 25, the original piezoelectric performance of the piezoelectric element 1 ″ can be utilized, and its vibration is caused by friction between the urethane foam 3 and the seat pan 20. Even if it is suppressed, there is an effect that the amount of electric charge generated by vibration can be increased and the sensitivity of the piezoelectric element to vibration can be improved.
【００４３】また、万一ウレタンフォーム３に割れが生
じても、圧電素子１''は張力印加部２４、２５によりシ
ートパン２０に固定されているのでずれることなく正規
の位置に固定され、人体の振動を継続して検出すること
が可能である。Further, even if the urethane foam 3 is cracked, the piezoelectric element 1 ″ is fixed to the seat pan 20 by the tension applying portions 24 and 25, so that the piezoelectric element 1 ″ is fixed to the normal position without being displaced, and It is possible to continuously detect the vibration.
【００４４】また、シートパン２０は金属の板材から成
形された物であるため、着座した人体がシートパン２わ
を感じることがない様に構成されており、従って、圧電
素子１''に張力が加えられていもウレタンフォーム３と
シートパン２０との間に配設すれば人体が圧電素子１''
を感じることはほとんどない。Further, since the seat pan 20 is formed of a metal plate, it is constructed so that the seated human body does not feel the seat pan 2 and therefore the piezoelectric element 1 '' is tensioned. Even if added, if the human body is placed between the urethane foam 3 and the seat pan 20,
I almost never feel.
【００４５】上記実施例では張力印加部２４、２５をシ
ートパン２０のエッヂ部分に固定したが、例えばシート
パン表面の凹凸部分に張力印加部２４、２５を固定する
等、ウレタンフォーム３とシートパン２０に挟まれた時
に一定の張力が印加される様に設置することができるも
のであればいかなる設置方法でもよく、振動検出手段の
設置方法を限定することを発明の主旨とするものではな
い。Although the tension applying portions 24 and 25 are fixed to the edge portions of the seat pan 20 in the above embodiment, the urethane foam 3 and the seat pan are fixed by, for example, fixing the tension applying portions 24 and 25 to uneven portions on the surface of the seat pan. Any installation method may be used as long as it can be installed so that a constant tension is applied when it is sandwiched between 20, and the purpose of the invention is not to limit the installation method of the vibration detection means.
【００４６】次に、本発明の第５の実施例を図面と共に
説明する。本実施例の第４の実施例との相違点は、図１
０に示すように、振動検出手段１が、予め定められた設
定値以上の張力が圧電素子１''に印加されぬよう圧電素
子１''に印加される張力を制御する張力制御部２６を有
する点にある。その他の構成は上記第４の実施例と同様
なのでここでの詳細な説明は省略する。ここで、張力制
御部２６は、圧電素子１''より寸法が長く、かつ圧電素
子１''より伸張性の無い部材、例えばステンレス板２７
で成形され、その端部２８、２９は圧電素子１''の両端
と固定される。端部２８、２９はシートパンへの固定部
を兼ねた張力印加部２４、２５と一体成形される。張力
制御部２６はステンレス板２７に限定されるものではな
く、上記のような寸法や伸張性を満たすものであれば他
の部材でもよい。Next, a fifth embodiment of the present invention will be described with reference to the drawings. The difference between this embodiment and the fourth embodiment is that FIG.
As shown in 0, the vibration detecting means 1 includes a tension controller 26 for controlling the tension applied to the piezoelectric element 1 ″ so that the tension equal to or more than a predetermined set value is not applied to the piezoelectric element 1 ″. There is a point to have. The other structure is the same as that of the fourth embodiment, and detailed description thereof will be omitted. Here, the tension control unit 26 is a member that is longer than the piezoelectric element 1 ″ and is less stretchable than the piezoelectric element 1 ″, such as a stainless steel plate 27.
The ends 28 and 29 are fixed to both ends of the piezoelectric element 1 ″. The end portions 28 and 29 are integrally formed with the tension applying portions 24 and 25 which also serve as fixing portions to the seat pan. The tension control unit 26 is not limited to the stainless steel plate 27, and may be any other member as long as it satisfies the above dimensions and expandability.
【００４７】上記構成により、圧電素子１''はその両端
が張力印加部２４、２５を介してシートパン２０に固定
されおり、ウレタンフォーム３とシートパン２０に挟ま
れた時に一定の張力が印加される様に設置されている
が、これは第２の実施例の説明で述べたように、この手
の圧電素子は長手方向の張力変化に対して電圧出力を発
生するものであり、その本来の性能をより有効に活かす
ためである。さらに、この圧電素子１''がウレタンフォ
ーム３とシートパン２０に挟まれているためにウレタン
フォーム３や、シートパン２０との間の摩擦によりその
振動による変形が押さえられているのを、張力をかける
ことにより圧電素子１''の振動による変形を圧電素子
１''全体に伝達しやすくし、小さな振動でもその振動に
より発生する電荷量を大きくすることによって圧電素子
１''の振動に対する感度を向上させている。この圧電素
子１''の発生電圧は信号処理手段８の増幅手段８−ａに
より増幅され、フィルター８−ｂにより必要とする周波
数成分にろ波され、さらに平滑化手段８−ｃにより平滑
化されて判定手段９に出力され、判定手段９により座席
１０上の人体の有無が判定される。人体の着座時の衝撃
等により、圧電素子１''に過大な張力が印加される場合
があるが、そのような過大張力に対しては、張力制御部
２６により予め定められた設定値以上の張力が圧電素子
１''に印加されぬよう圧電素子１''に印加される張力が
制御される。With the above structure, both ends of the piezoelectric element 1 '' are fixed to the seat pan 20 via the tension applying portions 24 and 25, and a constant tension is applied when sandwiched between the urethane foam 3 and the seat pan 20. However, as described in the explanation of the second embodiment, this piezoelectric element of this type produces a voltage output in response to a change in tension in the longitudinal direction. This is to make more effective use of the performance of. Further, since the piezoelectric element 1 ″ is sandwiched between the urethane foam 3 and the seat pan 20, the deformation caused by the vibration is suppressed by the friction between the urethane foam 3 and the seat pan 20. Is applied to make it easier to transmit the deformation caused by the vibration of the piezoelectric element 1 ″ to the entire piezoelectric element 1 ″, and to increase the amount of charge generated by the vibration even with a small vibration, the sensitivity to the vibration of the piezoelectric element 1 ″. Is improving. The voltage generated by the piezoelectric element 1 '' is amplified by the amplification means 8-a of the signal processing means 8, filtered by the filter 8-b to the required frequency component, and further smoothed by the smoothing means 8-c. Is output to the determination means 9, and the determination means 9 determines the presence / absence of a human body on the seat 10. Excessive tension may be applied to the piezoelectric element 1 ″ due to a shock when the human body is seated. However, with respect to such excessive tension, a tension control unit 26 sets a predetermined value or more. The tension applied to the piezoelectric element 1 ″ is controlled so that the tension is not applied to the piezoelectric element 1 ″.
【００４８】また上記構成により、圧電素子１''に過大
張力が印加されても、ステンレス板２７が圧電素子１''
より寸法が長く圧電素子１''より伸張性の無い部材であ
るので、張力印加により圧電素子１''が伸びてもステン
レス板２７の長さ以上は伸びることがなく、圧電素子
１''が破断することはない。ステンレス板２７の長さ
は、圧電素子１''の長さをＬとすると、例えば引っ張り
試験等に基づき圧電素子１''の降伏点における伸び△Ｌ
を調べることにより、Ｌ以上で、かつＬに△Ｌを加算し
た長さ以下の範囲で設定すればよい。Further, with the above structure, even if an excessive tension is applied to the piezoelectric element 1 ″, the stainless steel plate 27 will not be applied to the piezoelectric element 1 ″.
Since it is a member having a longer dimension and less expandability than the piezoelectric element 1 ″, even if the piezoelectric element 1 ″ is extended by the application of tension, the piezoelectric element 1 ″ does not extend beyond the length of the stainless steel plate 27. It does not break. Assuming that the length of the piezoelectric element 1 ″ is L, the length of the stainless steel plate 27 is an extension ΔL at the yield point of the piezoelectric element 1 ″ based on, for example, a tensile test.
It is only necessary to set in the range of L or more and less than or equal to L plus ΔL.
【００４９】第４の実施例では、圧電素子1''に張力を
印加して感度を向上させていたが、例えば着座時の衝撃
により圧電素子１''に降伏点以上の過大な張力が印加さ
れ、圧電素子１''の感度が低下したり、破断してしまう
といった課題があった。しかしながら、上記作用により
本実施例によれば、張力制御部２６により予め定められ
た設定値以上の張力が圧電素子に印加されぬよう圧電素
子に印加される張力が制御されるので、上記のような圧
電素子１''の感度低下や破断がなく、強度的な耐久性が
向上するといった効果がある。In the fourth embodiment, the tension is applied to the piezoelectric element 1 ″ to improve the sensitivity. However, for example, an excessive tension above the yield point is applied to the piezoelectric element 1 ″ due to a shock when sitting. As a result, there is a problem that the sensitivity of the piezoelectric element 1 ″ is lowered or the piezoelectric element 1 ″ is broken. However, according to the present embodiment, the tension control unit 26 controls the tension applied to the piezoelectric element so that the tension equal to or more than the preset value is not applied to the piezoelectric element by the above-described action. There is an effect that the piezoelectric element 1 ″ is not deteriorated in sensitivity or broken and the strength durability is improved.
【００５０】また上記作用により、張力制御部２６は圧
電素子１''より寸法が長く圧電素子１''より伸張性の無
い部材で成形されており、簡単で安価な構成で圧電素子
１''に印加される張力を制御することができるといった
効果がある。Further, due to the above operation, the tension control section 26 is formed of a member having a dimension longer than the piezoelectric element 1 '' and less extensible than the piezoelectric element 1 '', and the piezoelectric element 1 '' has a simple and inexpensive structure. There is an effect that the tension applied to the can be controlled.
【００５１】上記第５の実施例では、張力制御部２６
が、圧電素子１''より寸法が長く圧電素子１''より伸張
性の無い部材で成形され、その両端は圧電素子１''の両
端と固定される構成であったが、本発明の第６の実施例
として、図１１に示すように、張力制御部２６が、圧電
素子１''とシートパンとを連結する弾性体、例えばバネ
部材３０、３１で成形される構成としてもよい。図１１
において、バネ部材３０、３１の一方の端部３２、３３
は圧電素子１''の両端と固定され、他方の端部３４、３
５はシートパンへの固定を兼ねた張力印加部２４、２５
と固定されている。バネ部材３０、３１のバネ定数は実
験的に求めることができ、例えば圧電素子１''の降伏点
強度以下の張力で容易に伸びるバネ定数を選べばよい。
また、張力制御部２６はバネ部材３０、３１に限定され
るものではなく、例えば板バネやゴム等の部材のよう
に、上記のような弾性を満たすものであれば他の部材で
もよい。In the fifth embodiment, the tension controller 26
However, the piezoelectric element 1 ″ is formed of a member that is longer and less extensible than the piezoelectric element 1 ″, and both ends thereof are fixed to both ends of the piezoelectric element 1 ″. As an example of No. 6, as shown in FIG. 11, the tension control unit 26 may be formed by an elastic body that connects the piezoelectric element 1 ″ and the seat pan, for example, spring members 30 and 31. Figure 11
At one end 32, 33 of the spring member 30, 31
Is fixed to both ends of the piezoelectric element 1 ″, and the other ends 34, 3
Reference numeral 5 is a tension applying section 24, 25 that also serves as a fixing to the seat pan.
Has been fixed. The spring constants of the spring members 30 and 31 can be experimentally obtained, and for example, a spring constant that easily extends with a tension equal to or lower than the yield strength of the piezoelectric element 1 ″ may be selected.
Further, the tension control unit 26 is not limited to the spring members 30 and 31, and may be another member such as a member such as a leaf spring or rubber as long as it satisfies the elasticity as described above.
【００５２】第３の実施例ではステンレス板２７の長さ
Ｌ１は、Ｌ以上で、かつＬに△Ｌを加算した長さ以下の
範囲で設定すればよいが、圧電素子１''の使用部材によ
り△Ｌが小さいような場合は、Ｌ１の成形時に高い寸法
精度が必要になるといった課題があった。しかしなが
ら、上記のようにバネ部材３０、３１を用いれば、過大
な張力が印加されてもバネ部材３０、３１が伸びるの
で、圧電素子１''に印加される張力は低減する。この場
合、バネ部材の成形には高い寸法精度は必要としない。
したがって、第５の実施例よりもさらに簡単で安価な構
成で圧電素子１''に印加される張力を制御することがで
きるといった効果がある。In the third embodiment, the length L1 of the stainless steel plate 27 may be set to a value not less than L and not more than a length obtained by adding ΔL to L, but a member used for the piezoelectric element 1 ″ is used. Therefore, when ΔL is small, there is a problem that high dimensional accuracy is required when molding L1. However, if the spring members 30 and 31 are used as described above, the spring members 30 and 31 expand even if an excessive tension is applied, so that the tension applied to the piezoelectric element 1 ″ is reduced. In this case, high dimensional accuracy is not required for molding the spring member.
Therefore, there is an effect that the tension applied to the piezoelectric element 1 ″ can be controlled with a simpler and cheaper configuration than the fifth embodiment.
【００５３】なお、第２の実施例以下の実施例はシート
パン型のシートに適用するものであるが、第１の実施例
で述べたようなシートスプリング型のシートに張力印加
部２４、２５や張力制御部２６を有した振動検出手段１
を適用してもよい。また、振動検出手段１はシートパン
３の横手方向に配設したが、シートパン３の縦方向に配
設したり、複数個を配設したり、背もたれ側に配設した
りしてもよい。Second Embodiment Although the following embodiments are applied to the seat pan type seat, the tension applying portions 24 and 25 are applied to the seat spring type seat as described in the first embodiment. And vibration detection means 1 having a tension control unit 26
May be applied. Further, the vibration detecting means 1 is arranged in the lateral direction of the seat pan 3, but may be arranged in the longitudinal direction of the seat pan 3, a plurality of them may be arranged, or may be arranged on the backrest side. .
【００５４】また、第４の実施例以下の実施例では、振
動検出手段１は可とう性のある圧電素子１''から構成さ
れるが、例えば可とう性の抵抗体を用いたストレインゲ
ージ等を用いてもよく、張力印加により電気信号を出力
することができるものであればいかなるものでもよく、
振動検出手段を限定することを発明の主旨とするもので
はない。Fourth Embodiment In the following embodiments, the vibration detecting means 1 is composed of a flexible piezoelectric element 1 ″. For example, a strain gauge using a flexible resistor is used. May be used, as long as it is possible to output an electric signal by applying tension,
The purpose of the invention is not to limit the vibration detecting means.
【００５５】以上の実施例により本発明の人体検出装置
によれば、座席上での人体の有無の判定が精度良く行え
る。これによって、劇場や自動車内での空席の把握が精
度良く行え、空調や、音場制御等に利用できる。According to the human body detection apparatus of the present invention as described above, the presence / absence of a human body on the seat can be accurately determined. As a result, vacant seats in a theater or an automobile can be accurately grasped, and can be used for air conditioning and sound field control.
【００５６】[0056]
【発明の効果】以上実施例で説明したように本発明の人
体検出装置によれば次の効果が得られる。As described in the above embodiments, the human body detecting apparatus of the present invention has the following advantages.
【００５７】（１）座席の人体との接触面から着座した
人体が感じることの無い距離以上離れた座席の一部分に
振動検出手段を固定して人体の振動を検出するので、振
動検出手段の構成の自由度を大きくすることが可能で、
着座感への影響が少なく、かつ、人体を確実に検出でき
る人体検出手段を提供できる。(1) Since the vibration detecting means is fixed to a part of the seat which is separated from the contact surface of the seat with the human body by a distance which is not felt by the seated human body, the vibration of the human body is detected. It is possible to increase the degree of freedom of
It is possible to provide a human body detection unit that has less influence on the sitting feeling and can reliably detect the human body.
【００５８】（２）振動検出手段をシートスプリングに
固定しているので、形状さえ適切であればほとんどの振
動検出手段は着座感を阻害することなしにこの位置に配
置することが可能であり、振動検出手段のシートへの配
設を行う上で、設計の自由度がさらに向上する。(2) Since the vibration detecting means is fixed to the seat spring, most of the vibration detecting means can be arranged at this position without impairing the seating feeling as long as the shape is appropriate. The degree of freedom in design is further improved when the vibration detecting means is arranged on the seat.
【００５９】（３）可とう性のある圧電素子を用いてい
るので、シートスプリングのないシートでも着座感への
影響を少くでき、またウレタンフォームの一部に応力が
集中することが少なく、経時変化によりウレタンフォー
ムがもろくなっても割れの発生が少なくなる。(3) Since a flexible piezoelectric element is used, even a seat without a seat spring can reduce the influence on the seating feeling, and the stress is less concentrated on a part of the urethane foam. Even if the urethane foam becomes brittle due to changes, the occurrence of cracks is reduced.
【００６０】（４）帯状体がウレタンフォームからの荷
重を受けることによりある一定以上の張力がかかるよう
シートパンの一部に固定されているので、帯状体にはウ
レタンフォームの振動が確実に伝達されるとともに、圧
電素子には接しているウレタンフォームと帯状体との双
方の振動が効率的に伝達され、感度が向上する。(4) Since the belt-like body is fixed to a part of the seat pan so that a certain tension or more is applied by receiving the load from the urethane foam, the vibration of the urethane foam is surely transmitted to the belt-like body. At the same time, the vibrations of both the urethane foam and the strip that are in contact with the piezoelectric element are efficiently transmitted, and the sensitivity is improved.
【００６１】（５）張力印加部により圧電素子に張力を
印加しているので、圧電素子本来の圧電性能を活かすこ
とができるとともに、ウレタンフォームやシートパンと
の間の摩擦によりその振動が押さえられていても、振動
により発生する電荷量を大きくすることことができ、圧
電素子の振動に対する感度を向上させることができる。(5) Since tension is applied to the piezoelectric element by the tension applying section, the original piezoelectric performance of the piezoelectric element can be utilized, and its vibration is suppressed by the friction between the urethane foam and the seat pan. However, the amount of charge generated by vibration can be increased, and the sensitivity of the piezoelectric element to vibration can be improved.
【００６２】（６）張力制御部により、予め定められた
設定値以上の張力が圧電素子に印加されぬよう圧電素子
に印加される張力が制御されるので、着座衝撃時の圧電
素子への過大張力の印加による圧電素子の感度低下や破
断がなく、強度的な耐久性が向上する。(6) Since the tension control section controls the tension applied to the piezoelectric element so that the tension equal to or greater than the predetermined set value is not applied to the piezoelectric element, the tension applied to the piezoelectric element during seating impact is excessive. There is no reduction in sensitivity or breakage of the piezoelectric element due to the application of tension, and the strength durability is improved.
【００６３】（７）張力制御部が圧電素子より寸法が長
く圧電素子より伸張性の無い部材からなるので、簡単で
安価な構成で圧電素子に印加される張力を制御すること
ができる。(7) Since the tension control section is made of a member that is longer than the piezoelectric element and less extensible than the piezoelectric element, the tension applied to the piezoelectric element can be controlled with a simple and inexpensive structure.
【００６４】（８）張力制御部が、圧電素子とシートパ
ンとを連結する弾性体からなるので、成形に高い寸法精
度が必要なく、さらに簡単で安価な構成で圧電素子に印
加される張力を制御することができる。(8) Since the tension control section is made of an elastic body that connects the piezoelectric element and the seat pan, high dimensional accuracy is not required for molding, and the tension applied to the piezoelectric element is simple and inexpensive. Can be controlled.
【図１】本発明の第１の実施例における人体検出装置を
設置した座席の構成図FIG. 1 is a configuration diagram of a seat in which a human body detection device according to a first embodiment of the present invention is installed.
【図２】同装置のブロック図FIG. 2 is a block diagram of the device.
【図３】同装置に使用した加速度センサーの断面図FIG. 3 is a sectional view of an acceleration sensor used in the device.
【図４】本発明の第２の実施例における人体検出装置を
設置した座席の構成図FIG. 4 is a configuration diagram of a seat on which a human body detection device according to a second embodiment of the present invention is installed.
【図５】同装置のブロック図FIG. 5 is a block diagram of the device.
【図６】本発明の第３の実施例における振動検出手段の
構成図FIG. 6 is a configuration diagram of vibration detecting means in a third embodiment of the present invention.
【図７】本発明の第３の実施例における人体検出装置を
設置した座席の構成図FIG. 7 is a configuration diagram of a seat on which a human body detection device according to a third embodiment of the present invention is installed.
【図８】本発明の第４の実施例における振動検出手段の
構成図FIG. 8 is a configuration diagram of vibration detecting means in a fourth embodiment of the present invention.
【図９】本発明の第４の実施例における人体検出装置を
設置した座席の構成図FIG. 9 is a configuration diagram of a seat on which a human body detection device according to a fourth embodiment of the present invention is installed.
【図１０】本発明の第５の実施例における振動検出手段
の構成図FIG. 10 is a block diagram of vibration detecting means in a fifth embodiment of the present invention.
【図１１】本発明の第６の実施例における振動検出手段
の構成図FIG. 11 is a configuration diagram of vibration detecting means in a sixth embodiment of the present invention.
【図１２】従来の人体検出装置のブロック図FIG. 12 is a block diagram of a conventional human body detection device.
１ 振動検出手段 １' 加速度センサー １'' 圧電素子 ２ 表布 ３ ウレタンフォーム ４ シートスプリング ５ シートフレーム ６ 電源 ７ 抵抗回路 ８ 信号処理手段 ８−ａ 増幅手段 ８−ｂ フィルター ８−ｃ 平滑化手段 ９ 判定手段 １０ 座席 １１ 梁部 １２ 支持台 １３ 抵抗体 １４ 端子 １５ ケース １６ ベース １７ 充填材 １８ 溝部 １９ おもり ２０ シートパン ２１ 帯状体 ２４、２５ 張力印加部 ２６ 張力制御部 ２７ ステンレス板 ３０、３１ バネ部材 DESCRIPTION OF SYMBOLS 1 Vibration detection means 1'Accelerometer 1 '' Piezoelectric element 2 Surface cloth 3 Urethane foam 4 Seat spring 5 Seat frame 6 Power supply 7 Resistance circuit 8 Signal processing means 8-a Amplification means 8-b Filter 8-c Smoothing means 9 Judgment means 10 Seats 11 Beams 12 Supports 13 Resistors 14 Terminals 15 Cases 16 Bases 17 Fillers 18 Grooves 19 Weights 20 Seat pans 21 Bands 24, 25 Tension applying parts 26 Tension control parts 27 Stainless steel plates 30, 31 Spring members
フロントページの続き (72)発明者 岩佐 隆司 大阪府門真市大字門真1006番地 松下電器 産業株式会社内Front page continuation (72) Inventor Takashi Iwasa 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (8)
人体が感じられなくなる距離以上離れた座席の一部分に
固定された振動検出手段と、前記振動検出手段の出力を
処理する信号処理手段と、前記信号処理手段の出力によ
り、前記座席上の人体の有無を判定する判定手段からな
る人体検出装置。1. A vibration detecting means fixed to a part of the seat at a distance more than a distance at which the human body sitting on the seat cannot be felt from a contact surface of the seat with the human body, and a signal processing means for processing an output of the vibration detecting means. And a determination unit that determines the presence or absence of a human body on the seat based on the output of the signal processing unit.
に固定される請求項１記載の人体検出装置。2. The human body detection device according to claim 1, wherein the vibration detection means is fixed to a seat spring of a seat.
有し、座席のウレタンフォームとシートパンの間に配設
された請求項１記載の人体検出装置。3. The human body detecting apparatus according to claim 1, wherein the vibration detecting means has a flexible piezoelectric element and is arranged between the urethane foam of the seat and the seat pan.
に設置された帯状体に配設され、前記帯状体は前記ウレ
タンフォームからの荷重を受けることによりある一定以
上の張力がかかるようシートパンの一部に固定された請
求項１記載の人体検出装置。4. The vibration detecting means is arranged on a belt-like body installed under a urethane foam of a seat, and the belt-like body is subjected to a load from the urethane foam so that a tension of a certain level or more is applied to the belt-like body. The human body detection device according to claim 1, which is fixed to a part.
固定することにより圧電素子に張力を印加する張力印加
部を有した請求項３記載の人体検出装置。5. The human body detecting apparatus according to claim 3, wherein the vibration detecting means has a tension applying section for applying a tension to the piezoelectric element by fixing the piezoelectric element and the seat pan.
の張力が圧電素子に印加されぬよう前記圧電素子に印加
される張力を制御する張力制御部を有した請求項５記載
の人体検出装置。6. The human body detection system according to claim 5, wherein the vibration detecting means has a tension control section for controlling the tension applied to the piezoelectric element so that the tension of a predetermined value or more is not applied to the piezoelectric element. apparatus.
記圧電素子より伸張性の無い部材からなり、その両端は
前記圧電素子の両端と固定された請求項６記載の人体検
出装置。7. The human body detection device according to claim 6, wherein the tension control unit is made of a member having a dimension longer than the piezoelectric element and less extensible than the piezoelectric element, and both ends thereof are fixed to both ends of the piezoelectric element.
連結する弾性体からなる請求項６記載の人体検出装置。8. The human body detection device according to claim 6, wherein the tension controller is made of an elastic body that connects the piezoelectric element and the seat pan.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08529295A JP3624459B2 (en) | 1995-04-11 | 1995-04-11 | Human body detection device |
| US09/269,993 US6271760B1 (en) | 1995-04-11 | 1996-10-04 | Human body sensor for seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08529295A JP3624459B2 (en) | 1995-04-11 | 1995-04-11 | Human body detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08282358A true JPH08282358A (en) | 1996-10-29 |
| JP3624459B2 JP3624459B2 (en) | 2005-03-02 |
Family
ID=13854513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08529295A Expired - Fee Related JP3624459B2 (en) | 1995-04-11 | 1995-04-11 | Human body detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3624459B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6349602B1 (en) | 1999-09-06 | 2002-02-26 | Toyota Jidosha Kabushiki Kaisha | Seat occupant detection apparatus |
| US6356200B1 (en) | 1999-01-14 | 2002-03-12 | Toyota Jidosha Kabushiki Kaisha | Sitting passenger detecting apparatus and sitting passenger detecting method |
| JP2002307993A (en) * | 2001-04-09 | 2002-10-23 | Nippon Soken Inc | Seated occupant determining device for vehicle seat |
| JP2008113932A (en) * | 2006-11-07 | 2008-05-22 | Institute Of National Colleges Of Technology Japan | Body motion detection sensor and body motion monitoring system |
| JP2008220392A (en) * | 2007-03-08 | 2008-09-25 | Nitta Ind Corp | Biological information measuring apparatus |
| WO2017195235A1 (en) * | 2016-05-13 | 2017-11-16 | ダイキン工業株式会社 | Biological information acquisition device |
| JP2019030617A (en) * | 2017-08-09 | 2019-02-28 | 鉄男 菊池 | Urethane-sealed type sensor mat system for biomedical measurement information, capable of being mounted on toilet seat |
| JP2020062359A (en) * | 2018-10-15 | 2020-04-23 | 鉄男 菊池 | System including: hermetic bio-information urethane sensor mat adherent to reverse side of toilet seat; measurement part; deodorant and aromatic system; communication system for notifying information outside with bag for packing the same; and also apparatus including: health device; nonrestraint type device capable of bio-information and whereabout finding for care user; and device having deodorant and aromatic function |
-
1995
- 1995-04-11 JP JP08529295A patent/JP3624459B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6356200B1 (en) | 1999-01-14 | 2002-03-12 | Toyota Jidosha Kabushiki Kaisha | Sitting passenger detecting apparatus and sitting passenger detecting method |
| US6349602B1 (en) | 1999-09-06 | 2002-02-26 | Toyota Jidosha Kabushiki Kaisha | Seat occupant detection apparatus |
| JP2002307993A (en) * | 2001-04-09 | 2002-10-23 | Nippon Soken Inc | Seated occupant determining device for vehicle seat |
| JP4529311B2 (en) * | 2001-04-09 | 2010-08-25 | 株式会社日本自動車部品総合研究所 | Seat occupant determination device for vehicle seat |
| JP2008113932A (en) * | 2006-11-07 | 2008-05-22 | Institute Of National Colleges Of Technology Japan | Body motion detection sensor and body motion monitoring system |
| JP2008220392A (en) * | 2007-03-08 | 2008-09-25 | Nitta Ind Corp | Biological information measuring apparatus |
| WO2017195235A1 (en) * | 2016-05-13 | 2017-11-16 | ダイキン工業株式会社 | Biological information acquisition device |
| JP2019030617A (en) * | 2017-08-09 | 2019-02-28 | 鉄男 菊池 | Urethane-sealed type sensor mat system for biomedical measurement information, capable of being mounted on toilet seat |
| JP2020062359A (en) * | 2018-10-15 | 2020-04-23 | 鉄男 菊池 | System including: hermetic bio-information urethane sensor mat adherent to reverse side of toilet seat; measurement part; deodorant and aromatic system; communication system for notifying information outside with bag for packing the same; and also apparatus including: health device; nonrestraint type device capable of bio-information and whereabout finding for care user; and device having deodorant and aromatic function |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3624459B2 (en) | 2005-03-02 |
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