WO2004094756A1 - Electronic door latch system with water rejection filtering - Google Patents
Electronic door latch system with water rejection filtering Download PDFInfo
- Publication number
- WO2004094756A1 WO2004094756A1 PCT/US2004/012300 US2004012300W WO2004094756A1 WO 2004094756 A1 WO2004094756 A1 WO 2004094756A1 US 2004012300 W US2004012300 W US 2004012300W WO 2004094756 A1 WO2004094756 A1 WO 2004094756A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- touch sensor
- input
- gate
- water
- sensor
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/54—Electrical circuits
- E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
- E05B81/76—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/54—Electrical circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B77/00—Vehicle locks characterised by special functions or purposes
- E05B77/34—Protection against weather or dirt, e.g. against water ingress
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/54—Electrical circuits
- E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
- E05B81/76—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles
- E05B81/77—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles comprising sensors detecting the presence of the hand of a user
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
Definitions
- the present invention is directed to an electronic control system for a door latch release mechanism, including means for rejecting false actuation signals caused by environmental effects or otherwise.
- a membrane switch typically is sealed to environment, and, therefore, they are a logical design choice for use on an automobile's exterior.
- a membrane switch under its protective cover, a membrane switch is basically a mechanical push button switch whose movable contact is moved by flexing the protective cover. As such, the protective cover can deteriorate and crack, allowing moisture and contaminants to enter the internals of the switch, ultimately leading to failure of the switch. Further, ice buildup, as is common in northern climates in the winter months, can render a membrane switch inoperable.
- Field effect sensors which respond to proximity or touch of a stimulus, for example, touch of human finger, are superior to membrane switches in that they are solid state devices having no moving parts to wear out.
- conventional field effect sensors are not ideally suited for harsh environments, such as the outside of an automobile, because they also can be unintentionally actuated by other stimuli, such as pooled or flowing water or other contaminants.
- an electrically operated automobile door latch controlled by a conventional field effect sensor could release spuriously and unintentionally when the automobile is parked in the rain or run through a carwash.
- the present invention uses one or field effect sensors and a control circuit incorporating a time delay to distinguish between intentional and spurious stimuli affecting the field effect sensors.
- the present invention also takes advantage of geometric considerations in filtering out unintended actuations.
- FIG. 1A is a front elevation view of an automobile lift gate or door handle according to the present invention.
- FIG. IB is a side elevation view of an automobile lift gate handle according to the present invention.
- FIG. 2 is a rear perspective view of an automobile lift gate or door handle according to the present invention.
- FIG. 3 is a plan view of a flexible substrate including a plurality of sensors according to the present invention.
- FIG. 4 A is a schematic representation of a control circuit according to the present invention.
- FIG. 4B is a schematic representation of an alternate control circuit according to the present invention.
- FIGS. 1A and IB illustrate a handle shell 10 as be would installed in a lift-gate or door of an automobile.
- Shell 10 includes a substantially flat portion 12, a substantially curved portion 14 and a lip 16, wherein flat portion 12 defines an upper surface 18 and a
- Shell 10 typically would be installed with flat portion 12 oriented toward the top of the lift gate or door and curved portion 14 oriented toward the bottom of the lift gate or door. Shell 10 typically would be configured to receive a person's hand, with palm facing away from shell 10, such that the person's fingertips would extend to lower surface 20 of flat portion 12 and rear surface 24 of lip 16.
- a first field effect sensor, or touch sensor, 26 is positioned on upper surface 18 of flat portion 12.
- a preferred touch sensor 26 includes first and second electrodes 26A,26B and a control circuit 26C. Electrodes 26A,26B preferably cover most or substantially all of flat portion 12. In alternate embodiments, touch sensor 26 could have more or fewer electrodes, and it could be positioned on lower surface 20 of flat portion 12 or embedded within flat section 12. Alternatively, touch sensor 26 could be located within or on a rear surface of lip 16.
- a second field effect sensor, or water sensor, 28 is positioned generally at the center of inner surface 22 of curved portion 14. Similar to the preferred touch sensor 26, a preferred water sensor 28 includes first and second electrodes 28A,28B and a control circuit 28C.
- electrodes 28A,28B cover a substantial portion of the center of inner surface 22 of curved portion 14.
- water sensor 28 could be positioned on outer surface 24 of curved portion 14, or water sensor 28 could be embedded within curved portion 14.
- touch sensor 26 including first and second electrodes 26A,26B and control circuit 26C
- water sensor 28 including first and second electrodes 28A,28B and control circuit 28C
- flexible substrate 40 can be bonded or otherwise adhered to the rear side of shell 10 so that touch sensor 26 and water sensor are located on flat portion 12 and curved portion 14, respectively, or as otherwise desired.
- flexible substrate 40 can be bonded or otherwise adhered to the rear side of shell 10 so that touch sensor 26 and water sensor are located on flat portion 12 and curved portion 14, respectively, or as otherwise desired.
- flexible substrate 40 can be bonded or otherwise adhered to the rear side of shell 10 so that touch sensor 26 and water sensor are located on flat portion 12 and curved portion 14, respectively, or as otherwise desired.
- flexible substrate 40 is formed by molding
- touch sensor 26 and water sensor 28 can be borne on individual substrates, each of which can be separately applied to or embedded within shell 10. In other embodiments, touch sensor 26 and water sensor 28 can be applied directly to shell 10.
- touch sensor 26 and water sensor 28 are embodied as field effect sensors using the TSlOO integrated control circuit available from TouchSensor Technologies, LLC of Wheaton, Illinois.
- TSlOO integrated control circuit available from TouchSensor Technologies, LLC of Wheaton, Illinois.
- Many of the design and operating principles of the TSlOO sensor are described in United States Patent Nos. 6,230,282 and 6,713,897 and related United States Patent Application Serial Nos. 10/272,377 10/725,908, the disclosures of which are incorporated herein by reference.
- the TSlOO sensor is designed to offer substantial resistance ) to spurious actuation, for example, due to water coming in contact with or proximity to the sensor.
- the principles of the present invention offer further resistance to spurious actuation.
- FIG. 4 illustrates an embodiment of a control circuit 50 according to the present invention.
- Output 27 of touch sensor 26 is coupled to input 54A of AND gate 54 and to rising edge sensitive input A of touch sensor timer 52.
- Complementary pulse output Q of touch sensor timer 52 is coupled to input 54B of AND gate 54.
- Output 54C of AND gate 54 is coupled to input 56A of AND gate 56.
- Output 29 of water sensor 28 is coupled to input 58 A of OR gate 58 and to falling edge sensitive input B of water sensor timer 60.
- Pulse output Q of water sensor timer 60 is coupled to input 58B of OR gate 58.
- Output 58C of OR gate 58 is coupled to the input of inverter 62, the output of which is coupled to input 56B of AND gate 56.
- the output of AND gate 56 is coupled to the gate of FET 64, the output of which is coupled to and controls the
- Touch sensor 26 responds to stimuli, for example, a finger or water, proximate touch sensor 26. In the absence of a stimulus, output 27 of touch sensor 26 is low. With a stimulus present proximate touch sensor 26, output 27 of touch sensor 26 goes high and remains high until the stimulus is removed. Water sensor 28 operates in the same way.
- Touch sensor timer 52 responds to input received from output 27 of touch sensor 26 as follows.
- complementary pulse output Q of touch sensor timer 52 is high.
- input A of touch sensor timer 52 senses a low-to-high transition, as it would when touch sensor 26 goes from the unstimulated condition to the stimulated condition and output 27 of touch sensor 26 goes from low to high, touch sensor timer 52 is triggered, and complementary pulse output Q goes low and remains low until touch sensor timer 52 times out.
- Complementary pulse output Q then returns to the high (steady) state.
- Touch sensor timer 52 is retriggered each time input A senses a low-to-high transition, regardless of the state of touch sensor timer 52 when input A senses such a low to high transition.
- touch sensor timer 52 times out about 300 msec after sensing the most recent low-to-high transition at input A.
- Water sensor timer 60 responds to input received from output 29 of water sensor 28 as follows. In the steady state, pulse output Q of water sensor timer 60 is low. When input B of water sensor timer 60 senses a high-to-low transition, as it would when water sensor 28 goes from the stimulated condition to the unstimulated condition and output 29 of water sensor 28 goes from high to low, water sensor timer 60 is triggered and pulse output Q goes high and remains high until water sensor timer 60 times out. Pulse output Q then returns to the low (steady) state. Water sensor timer 60 is retriggered each time input B senses a high-to-low transition, regardless of the state of water sensor timer 60 when input B senses such a high-to- low transition. In the preferred embodiment, water sensor timer 60 times out about 5 sec after sensing the most recent high-to-low transition at input B.
- touch sensor timer 52 and the logic associated with it reduce the likelihood of an unintended release of the door latch.
- Water sensor 28, water sensor timer 60, and the logic associated with these components further reduce the likelihood of such an unintended release.
- FIG. 4B The logic circuit illustrated in FIG. 4B is functionally identical to the one illustrated in FIG. 4A, as would be apparent to one skilled in the art. However, the logic is effected using only NAND gates instead of AND and OR gates and an inverter.
- the FIG. 4B embodiment is
- touch sensor 26 must be stimulated continuously for at least 300 msec in order for a door latch release signal to be generated (and the door latch release signal must not be disabled by present stimulation of water sensor 28 or destimualtion of water sensor 28 at any time in the prior 5 second period).
- the convex curvature of shell 10 makes it unlikely that the back of a human hand would lie in contact with outer surface 24 of curved portion 14 at more than a few discrete points. Thus, it is unlikely that proximity of a human hand would actuate water sensor 28.
Abstract
Description
Claims
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK04760081T DK1627122T3 (en) | 2003-04-22 | 2004-04-21 | Electronic control system for a door lock release mechanism with water-repellent filtration |
BRPI0409635 BRPI0409635A (en) | 2003-04-22 | 2004-04-21 | electronic door reed system with filtration for water rejection |
JP2006513190A JP4560512B2 (en) | 2003-04-22 | 2004-04-21 | Electronic door latch with dewatering filtration |
NZ543641A NZ543641A (en) | 2003-04-22 | 2004-04-21 | Electronic control system for a door latch release mechanism with water rejection filtering |
AU2004232895A AU2004232895B2 (en) | 2003-04-22 | 2004-04-21 | Electronic door latch system with water rejection filtering |
CA2522663A CA2522663C (en) | 2003-04-22 | 2004-04-21 | Electronic door latch system with water rejection filtering |
KR1020057019967A KR101048541B1 (en) | 2003-04-22 | 2004-04-21 | Electronic Door Latch Unit with Water Ignore Filtering |
MXPA05011328A MXPA05011328A (en) | 2003-04-22 | 2004-04-21 | Electronic door latch system with water rejection filtering. |
DE200460004268 DE602004004268T2 (en) | 2003-04-22 | 2004-04-21 | Electronic control system for door release mechanism with water-repellent filtering |
EP04760081A EP1627122B1 (en) | 2003-04-22 | 2004-04-21 | Electronic control system for a door latch release mechanism with water rejection filtering |
HK06107098A HK1085779A1 (en) | 2003-04-22 | 2006-06-21 | Electronic control system for a door latch releasemechanism with water rejection filtering |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US46451803P | 2003-04-22 | 2003-04-22 | |
US60/464,518 | 2003-04-22 | ||
US10/828,996 | 2004-04-20 | ||
US10/828,996 US7026861B2 (en) | 2003-04-22 | 2004-04-20 | Electronic door latch system with water rejection filtering |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004094756A1 true WO2004094756A1 (en) | 2004-11-04 |
Family
ID=33313481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/012300 WO2004094756A1 (en) | 2003-04-22 | 2004-04-21 | Electronic door latch system with water rejection filtering |
Country Status (14)
Country | Link |
---|---|
US (1) | US7026861B2 (en) |
EP (1) | EP1627122B1 (en) |
JP (1) | JP4560512B2 (en) |
KR (1) | KR101048541B1 (en) |
AU (1) | AU2004232895B2 (en) |
BR (1) | BRPI0409635A (en) |
CA (1) | CA2522663C (en) |
DE (1) | DE602004004268T2 (en) |
DK (1) | DK1627122T3 (en) |
ES (1) | ES2280041T3 (en) |
HK (1) | HK1085779A1 (en) |
MX (1) | MXPA05011328A (en) |
NZ (1) | NZ543641A (en) |
WO (1) | WO2004094756A1 (en) |
Cited By (3)
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---|---|---|---|---|
WO2007011938A2 (en) * | 2005-07-19 | 2007-01-25 | Lafrance Autoworks, Inc. | Touch-sensitive electronically controlled automotive door opener |
FR2964517A1 (en) * | 2010-09-06 | 2012-03-09 | Continental Automotive France | METHOD FOR DETERMINING PARASITE CONTACTS ON A DOOR HANDLE CONTACT DETECTION SENSOR OF A MOTOR VEHICLE |
KR20200051017A (en) * | 2017-09-05 | 2020-05-12 | 콘티넨탈 오토모티브 프랑스 | Device for detecting user's intention to lock or unlock a car door and associated door handle |
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US8176296B2 (en) | 2000-10-26 | 2012-05-08 | Cypress Semiconductor Corporation | Programmable microcontroller architecture |
US7406674B1 (en) | 2001-10-24 | 2008-07-29 | Cypress Semiconductor Corporation | Method and apparatus for generating microcontroller configuration information |
US8078970B1 (en) | 2001-11-09 | 2011-12-13 | Cypress Semiconductor Corporation | Graphical user interface with user-selectable list-box |
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US7761845B1 (en) | 2002-09-09 | 2010-07-20 | Cypress Semiconductor Corporation | Method for parameterizing a user module |
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US9448964B2 (en) | 2009-05-04 | 2016-09-20 | Cypress Semiconductor Corporation | Autonomous control in a programmable system |
US20110036164A1 (en) * | 2009-07-27 | 2011-02-17 | Touchsensor Technologies, Llc | Level sensing controller and method |
US20110128154A1 (en) * | 2009-12-01 | 2011-06-02 | Flow-Rite Controls, Ltd. | Battery electrolyte level indicator |
US9692411B2 (en) | 2011-05-13 | 2017-06-27 | Flow Control LLC | Integrated level sensing printed circuit board |
FR2983663B1 (en) * | 2011-12-02 | 2014-07-04 | Valeo Securite Habitacle | SENSOR FOR ACTION ON AN OPENING OF A MOTOR VEHICLE |
JP6829776B2 (en) * | 2017-03-29 | 2021-02-10 | アルプスアルパイン株式会社 | Water rejection on capacitive door handles |
DE102019202259A1 (en) * | 2019-02-20 | 2020-08-20 | Psa Automobiles Sa | Actuating device for the automotive exterior |
JP7181829B2 (en) * | 2019-04-03 | 2022-12-01 | 株式会社Subaru | vehicle |
KR102423810B1 (en) | 2020-10-29 | 2022-07-21 | 정진옥 | Vacuum container for food storage |
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- 2004-04-21 JP JP2006513190A patent/JP4560512B2/en not_active Expired - Fee Related
- 2004-04-21 DE DE200460004268 patent/DE602004004268T2/en not_active Expired - Lifetime
- 2004-04-21 NZ NZ543641A patent/NZ543641A/en unknown
- 2004-04-21 EP EP04760081A patent/EP1627122B1/en not_active Expired - Lifetime
- 2004-04-21 CA CA2522663A patent/CA2522663C/en not_active Expired - Fee Related
- 2004-04-21 WO PCT/US2004/012300 patent/WO2004094756A1/en active IP Right Grant
- 2004-04-21 BR BRPI0409635 patent/BRPI0409635A/en not_active Application Discontinuation
- 2004-04-21 ES ES04760081T patent/ES2280041T3/en not_active Expired - Lifetime
- 2004-04-21 KR KR1020057019967A patent/KR101048541B1/en not_active IP Right Cessation
- 2004-04-21 DK DK04760081T patent/DK1627122T3/en active
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- 2004-04-21 AU AU2004232895A patent/AU2004232895B2/en not_active Ceased
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007011938A2 (en) * | 2005-07-19 | 2007-01-25 | Lafrance Autoworks, Inc. | Touch-sensitive electronically controlled automotive door opener |
WO2007011938A3 (en) * | 2005-07-19 | 2007-03-15 | Lafrance Autoworks Inc | Touch-sensitive electronically controlled automotive door opener |
FR2964517A1 (en) * | 2010-09-06 | 2012-03-09 | Continental Automotive France | METHOD FOR DETERMINING PARASITE CONTACTS ON A DOOR HANDLE CONTACT DETECTION SENSOR OF A MOTOR VEHICLE |
WO2012031654A1 (en) * | 2010-09-06 | 2012-03-15 | Continental Automotive France | Method for determining spurious contacts on a motor vehicle door handle contact detection sensor |
CN103125072A (en) * | 2010-09-06 | 2013-05-29 | 法国大陆汽车公司 | Method for determining spurious contacts on a motor vehicle door handle contact detection sensor |
US9000889B2 (en) | 2010-09-06 | 2015-04-07 | Continental Automotive France | Method for determining spurious contacts on a contact detection sensor for a door handle of an automobile vehicle |
KR101802363B1 (en) | 2010-09-06 | 2017-11-28 | 콘티넨탈 오토모티브 프랑스 | Method for determining spurious contacts on a motor vehicle door handle contact detection sensor |
KR20200051017A (en) * | 2017-09-05 | 2020-05-12 | 콘티넨탈 오토모티브 프랑스 | Device for detecting user's intention to lock or unlock a car door and associated door handle |
KR102641562B1 (en) | 2017-09-05 | 2024-02-27 | 콘티넨탈 오토모티브 프랑스 | A device for detecting a user's intention to lock or unlock a car door and associated door handle |
Also Published As
Publication number | Publication date |
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BRPI0409635A (en) | 2006-04-25 |
KR20060014377A (en) | 2006-02-15 |
NZ543641A (en) | 2007-08-31 |
HK1085779A1 (en) | 2006-09-01 |
DE602004004268T2 (en) | 2007-08-30 |
MXPA05011328A (en) | 2005-12-12 |
JP2006524763A (en) | 2006-11-02 |
US20050068078A1 (en) | 2005-03-31 |
DK1627122T3 (en) | 2007-05-07 |
CA2522663A1 (en) | 2004-11-04 |
EP1627122A1 (en) | 2006-02-22 |
KR101048541B1 (en) | 2011-07-11 |
AU2004232895A1 (en) | 2004-11-04 |
EP1627122B1 (en) | 2007-01-10 |
CA2522663C (en) | 2011-04-12 |
JP4560512B2 (en) | 2010-10-13 |
AU2004232895B2 (en) | 2010-07-29 |
DE602004004268D1 (en) | 2007-02-22 |
ES2280041T3 (en) | 2007-09-01 |
US7026861B2 (en) | 2006-04-11 |
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