DE10322322A1 - Electrochromatic mirror control system for motor vehicle, has microcontroller with integral control unit for mirror, which is implemented as software control unit - Google Patents
Electrochromatic mirror control system for motor vehicle, has microcontroller with integral control unit for mirror, which is implemented as software control unit Download PDFInfo
- Publication number
- DE10322322A1 DE10322322A1 DE2003122322 DE10322322A DE10322322A1 DE 10322322 A1 DE10322322 A1 DE 10322322A1 DE 2003122322 DE2003122322 DE 2003122322 DE 10322322 A DE10322322 A DE 10322322A DE 10322322 A1 DE10322322 A1 DE 10322322A1
- Authority
- DE
- Germany
- Prior art keywords
- microcontroller
- control unit
- mirror
- control system
- control
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/02—Rear-view mirror arrangements
- B60R1/08—Rear-view mirror arrangements involving special optical features, e.g. avoiding blind spots, e.g. convex mirrors; Side-by-side associations of rear-view and other mirrors
- B60R1/083—Anti-glare mirrors, e.g. "day-night" mirrors
- B60R1/088—Anti-glare mirrors, e.g. "day-night" mirrors using a cell of electrically changeable optical characteristic, e.g. liquid-crystal or electrochromic mirrors
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
Description
Die
Erfindung betrifft ein Regelsystem eines elektrochromatischen Kraftfahrzeugspiegels.
Ein derartiges Regelsystem ist beispielsweise aus
Ein
elektrochromatischer Spiegel, auch als elektrochromer Spiegel bezeichnet,
eines Kraftfahrzeugs weist durch Variation einer elektrischen Spannung
veränderliche
Reflexionseigenschaften auf, wobei eine Spannungserhöhung eine
Abdunkelung des Spiegels bewirkt. Um eine automatische Abdunkelung
oder Abblendung, insbesondere bei der Gefahr der Blendung durch
die Scheinwerfer anderer Fahrzeuge, zu ermöglichen, wird ein Spiegel wie
der aus der
Der Erfindung liegt die Aufgabe zugrunde, ein Regelsystem eines elektrochromen Spiegels anzugeben, welches sich durch einen besonders geringen Bauteileaufwand auszeichnet.The The invention has for its object a control system of an electrochromic Specify mirror, which is characterized by a particularly low Component effort distinguished.
Diese Aufgabe wird erfindungsgemäß gelöst durch ein Regelsystem mit den Merkmalen des Anspruchs 1. Hierbei übernimmt ein Microcontroller die Aufgaben der oben erläuterten analog gelösten Regelung. Durch den Ersatz des aus diskreten Bauteilen aufgebauten Reglers durch eine durch Software realisierte Reglereinheit ist die Anzahl der zur Bereitstellung der Regelungsfunktion erforderlichen Bauteile drastisch reduziert. Das Regelsystem ist damit sehr rationell und ausfallsicher herstellbar.This The object is achieved by a control system with the features of claim 1. This takes over a microcontroller performs the tasks of the above-described analog solution. By replacing the regulator made up of discrete components by a controller unit realized by software is the number the components required to provide the control function drastically reduced. The control system is therefore very rational and fail-safe to manufacture.
Der Microcontroller leitet nach einer bevorzugten Ausführungsform eine über einen Datenbus, beispielsweise CAN (Controller Area Network), übertragene Informationen über den gewünschten Abdunkelungsgrad des elektrochromen Elements im Spiegelglas über einen digitalen Ausgang, der ein pulsweitenmoduliertes Signal entsprechend den Vorgaben in der übertragene Informationen bereitstellt, an eine Regelstrecke, vorzugsweise bestehend aus Filter und Leistungsendstufe, weiter. Da sich die Regelung auf die gewünschte Ausgangsspannung der Regelstrecke und damit auch die Eingangsspannung des elektrochromen Elements, kurz auch als EC-Element bezeichnet, bezieht, wird vorzugsweise eben dieses von der Regelstrecke, insbesondere der Leistungsendstufe innerhalb der Regelstrecke, bereitgestellte Ausgangssignal über einen Eingang des Microcontrollers zurückgelesen. Vorzugsweise ist im Microcontroller mit diesem Eingang ein Analog-Digital-Converter verbunden, der die von außen kommende Spannung in ein digitales Signal umwandelt und der Regelungsfunktion im Sinne einer Rückkopplung zur Verfügung stellt.The Microcontroller conducts according to a preferred embodiment one over a data bus, for example CAN (Controller Area Network) information about the wished Degree of darkening of the electrochromic element in the mirror glass over one digital output corresponding to a pulse width modulated signal the specifications in the transferred Provides information to a controlled system, preferably consisting from filter and power amplifier, further. Because the scheme is on the desired Output voltage of the controlled system and thus also the input voltage of the electrochromic element, also referred to as EC element for short, this is preferably from the controlled system, in particular the power output stage within the controlled system Output signal via read back an input of the microcontroller. Preferably an analog-digital converter in the microcontroller with this input connected to the outside converts incoming voltage into a digital signal and the control function in the sense of a feedback to disposal provides.
Der Vorteil der Erfindung liegt inbesondere darin, dass die Intelligenz der Regelungsfunktion zum Zwecke der Nachführung der Spannung am elektrochromen Spiegel entsprechend den über einen Datenbus übertragenen Vorgaben vollständig als Software in den Microcontroller integriert ist. Ein zusätzlicher, insbesondere diskret aufgebauter Regler außerhalb des Microcontrollers ist somit überflüssig.The The advantage of the invention is in particular that the intelligence the control function for the purpose of tracking the voltage on the electrochromic Mirror corresponding to the above transmitted a data bus Specifications completely is integrated as software in the microcontroller. An additional, in particular a discretely constructed controller outside the microcontroller is therefore superfluous.
Ein
Ausführungsbeispiel
der Erfindung wird nachfolgend anhand einer Zeichnung näher erläutert. Hierin
zeigt
Ein
in
Die
als Regeleinheit fungierende, auch als Regler bezeichnete Software
Die
Analogspannungserzeugung kann anstatt über Pulsweitenmodulation und
externes Filter auch über
einen D/A Converter, der sowohl im Microcontroller
Der
Regler
Zwischen
den Microcontroller und die Last, nämlich das EC-Element
Neben
den Regelungsaufgaben übernimmt die
Software
Das
Regelsystem
- 00
- Datenbus, KFZ-Busdata bus, Car Bus
- 11
- Regelsystemcontrol system
- 22
- Microcontrollermicrocontrollers
- 33
- Regeleinheitcontrol unit
- 44
- Regelstreckecontrolled system
- 55
- elektrochromes Elementelectrochromic element
- 66
- Ausgangoutput
- 77
- Ausgangsleitungoutput line
- 88th
- Verbindungsleitungconnecting line
- 99
- RückkopplungsleitungFeedback line
- 1010
- Analogeinganganalog input
- 1111
- Filterfilter
- 1212
- Leistungsendstufepower output stage
- 1313
- Betriebsspannung (Ubatt)Operating voltage (U batt )
- 1414
- Steuereingangcontrol input
- 1515
- Analog-Digital-ConverterAnalog-Digital Converter
- 1616
- FehlererkennungseinheitError detection unit
- RGRG
- Regelgrößecontrolled variable
- SGSG
- Stellgrößemanipulated variable
- SWSW
- Sollwertsetpoint
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003122322 DE10322322A1 (en) | 2003-05-17 | 2003-05-17 | Electrochromatic mirror control system for motor vehicle, has microcontroller with integral control unit for mirror, which is implemented as software control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003122322 DE10322322A1 (en) | 2003-05-17 | 2003-05-17 | Electrochromatic mirror control system for motor vehicle, has microcontroller with integral control unit for mirror, which is implemented as software control unit |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10322322A1 true DE10322322A1 (en) | 2004-12-02 |
Family
ID=33394722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003122322 Ceased DE10322322A1 (en) | 2003-05-17 | 2003-05-17 | Electrochromatic mirror control system for motor vehicle, has microcontroller with integral control unit for mirror, which is implemented as software control unit |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10322322A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19860941A1 (en) * | 1998-12-29 | 2000-07-13 | Magna Reflex Holding Gmbh | Vehicle rear view system with electrochromic mirror |
US20020024259A1 (en) * | 1997-01-09 | 2002-02-28 | Donnelly Mirrors Limited, A Corporation Of The State Of Ireland | Vehicle rearview mirror system |
-
2003
- 2003-05-17 DE DE2003122322 patent/DE10322322A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020024259A1 (en) * | 1997-01-09 | 2002-02-28 | Donnelly Mirrors Limited, A Corporation Of The State Of Ireland | Vehicle rearview mirror system |
DE19860941A1 (en) * | 1998-12-29 | 2000-07-13 | Magna Reflex Holding Gmbh | Vehicle rear view system with electrochromic mirror |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
R016 | Response to examination communication | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final | ||
R003 | Refusal decision now final |
Effective date: 20150127 |