JP2018095213A - 車両用乗員検知装置 - Google Patents
車両用乗員検知装置 Download PDFInfo
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- JP2018095213A JP2018095213A JP2016244663A JP2016244663A JP2018095213A JP 2018095213 A JP2018095213 A JP 2018095213A JP 2016244663 A JP2016244663 A JP 2016244663A JP 2016244663 A JP2016244663 A JP 2016244663A JP 2018095213 A JP2018095213 A JP 2018095213A
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- 238000001514 detection method Methods 0.000 title claims description 117
- 238000004364 calculation method Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 101000836337 Homo sapiens Probable helicase senataxin Proteins 0.000 description 4
- 102100027178 Probable helicase senataxin Human genes 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 125000002066 L-histidyl group Chemical group [H]N1C([H])=NC(C([H])([H])[C@](C(=O)[*])([H])N([H])[H])=C1[H] 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000002123 temporal effect Effects 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
-
- 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
- B60N2/0025—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 by using weight measurement
-
- 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
- B60N2/0026—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 distinguishing between humans, animals or objects
-
- 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
- B60N2/0031—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 the frame
-
- 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
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
- B60N2/07—Slide construction
- B60N2/0722—Constructive details
- B60N2/0732—Attachment of seat frame to the slide, e.g. eyelets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
- B60R21/01512—Passenger detection systems
- B60R21/01516—Passenger detection systems using force or pressure sensing means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/40—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
- G01G19/413—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means
- G01G19/414—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
- G01G19/4142—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only for controlling activation of safety devices, e.g. airbag systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
-
- 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
- B60N2230/00—Communication or electronic aspects
- B60N2230/30—Signal processing of sensor data
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Seats For Vehicles (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
Description
座席周辺に取り付けられて、座席に作用する荷重を検知する荷重センサと、
該荷重センサの検出値に基づいて、乗員を検知する乗員検知手段と、を備えると共に、
前記乗員検知手段は、少なくとも、
前記検出値および乗員判断閾値に基づいて、座席に対する乗員の着座状態を判定する乗員判定部と、
前記検出値および振動閾値に基づいて、車両振動の有無を判定する振動変化量判断部と、
該振動変化量判断部からの車両振動の有無に基づいて、前記乗員判定部からの着座状態に対する乗員判定結果の更新または前回の乗員判定結果の保持を判断する乗員判断部と、を備えた車両用乗員検知装置において、
空席状態からの乗車の発生、または、降車による空席状態の発生を監視して、空席状態からの乗車、または、降車による空席状態に該当した場合に、
乗車前が安定しているか、または、降車後が安定しているかを演算によって求める乗降車判定部を設けると共に、
該乗降車判定部での演算結果が安定していると出た場合に、
前記乗員判断部は、外乱が発生している状況においても、乗員判定結果の更新を実行するようにしたことを特徴とする。
更に、上記した判定カウント部19は、同一の乗員判定結果16aが一定時間続いている場合に、乗員判定結果16aの更新を強制的に実行させるようにするためのものである。そのために、判定カウント部19は、連続して同じ乗員判定結果16aが得られた回数をカウントして、カウントされた値(カウントε)を乗員判断部21へ出力する。これに対し、乗員判断部21は、判定カウント部19の出力の結果に対しても、上記した乗員判定結果16aの更新を実行するか、または、前回の乗員判定結果16aを保持するかの判断を行うこととなる。
以下、荷重センサ11によって実際に取得した波形に基づいて、車両1の走行中における、乗員判定手段15の基本的な作動の一例について説明する。
|ΔW(t)|<JudgeTH/L ・・・判断A
Gn−JudgeTH/L<W(t)−W(t-1)<Gn+JudgeTH/L・・・判断B
8 車両用乗員検知装置
8a 乗員情報
11 荷重センサ
12 乗員検知手段
13 信号変換部
13a 検出値
13b 検出値
14 振動波形除去部
14a 振動波形除去信号
14b 振動波形除去信号
15 乗員判定手段
16 乗員判定部
16a 乗員判定結果
17 振動変化量判断部
17a 車両振動
18 荷重変化量判断部
18a 振動閾値
21 乗員判断部
23 乗降車判定部
41 区間(乗車)
42 区間(降車)
43 区間(乗車前)
44 区間(降車後)
W 検知荷重
ΔW 荷重変化量
Claims (3)
- 座席周辺に取り付けられて、座席に作用する荷重を検知する荷重センサと、
該荷重センサの検出値に基づいて、乗員を検知する乗員検知手段と、を備えると共に、
前記乗員検知手段は、少なくとも、
前記検出値および乗員判断閾値に基づいて、座席に対する乗員の着座状態を判定する乗員判定部と、
前記検出値および振動閾値に基づいて、車両振動の有無を判定する振動変化量判断部と、
該振動変化量判断部からの車両振動の有無に基づいて、前記乗員判定部からの着座状態に対する乗員判定結果の更新または前回の乗員判定結果の保持を判断する乗員判断部と、を備えた車両用乗員検知装置において、
空席状態からの乗車の発生、または、降車による空席状態の発生を監視して、空席状態からの乗車、または、降車による空席状態に該当した場合に、
乗車前が安定しているか、または、降車後が安定しているかを演算によって求める乗降車判定部を設けると共に、
該乗降車判定部での演算結果が安定していると出た場合に、前記乗員判断部は、外乱が発生している状況においても、乗員判定結果の更新を実行するようにしたことを特徴とする車両用乗員検知装置。 - 請求項1に記載の車両用乗員検知装置において、
前記乗降車判定部は、前記検出値の荷重変化時間が、予め設定した乗車または降車を分別するための時間的条件を満たした場合にのみ、
上記安定しているかどうかを求める演算を行うことを特徴とする車両用乗員検知装置。 - 請求項1または請求項2に記載の車両用乗員検知装置において、
前記乗降車判定部は、前記検出値の荷重変化量が、予め設定した乗車または降車を分別するための荷重条件を満たした場合にのみ、
上記安定しているかどうかを求める演算を行うことを特徴とする車両用乗員検知装置。
Priority Applications (2)
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JP2016244663A JP6797473B2 (ja) | 2016-12-16 | 2016-12-16 | 車両用乗員検知装置 |
US15/822,501 US10480992B2 (en) | 2016-12-16 | 2017-11-27 | Vehicle passenger detection apparatus |
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JP2016244663A JP6797473B2 (ja) | 2016-12-16 | 2016-12-16 | 車両用乗員検知装置 |
Publications (2)
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JP2018095213A true JP2018095213A (ja) | 2018-06-21 |
JP6797473B2 JP6797473B2 (ja) | 2020-12-09 |
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JP (1) | JP6797473B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US11120523B1 (en) | 2020-03-12 | 2021-09-14 | Conduent Business Services, Llc | Vehicle passenger detection system and method |
US11527089B2 (en) | 2020-04-29 | 2022-12-13 | Conduent Business Services, Llc | Building light-weight single shot refinement neural network for vehicle passenger detection system |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5689296B2 (ja) | 2010-12-06 | 2015-03-25 | カルソニックカンセイ株式会社 | 乗員検知システム |
JP5631808B2 (ja) * | 2011-05-13 | 2014-11-26 | カルソニックカンセイ株式会社 | 車両用乗員検知装置 |
US9132772B2 (en) * | 2013-03-13 | 2015-09-15 | Aisin Seiki Kabushiki Kaisha | Seat passenger determination apparatus |
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2016
- 2016-12-16 JP JP2016244663A patent/JP6797473B2/ja active Active
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2017
- 2017-11-27 US US15/822,501 patent/US10480992B2/en active Active
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US20180172501A1 (en) | 2018-06-21 |
JP6797473B2 (ja) | 2020-12-09 |
US10480992B2 (en) | 2019-11-19 |
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