Microchip Solution Seminar mtouch Sensing Solutions. 29. June 2016 Munich, Germany

Transcription

1 Microchip Solution Seminar mtouch Sensing Solutions 29. June 2016 Munich, Germany

2 Agenda 08:30-09:00 Customer Registration and Coffee 09:00-09:15 Welcome & Introduction 09:15-10:00 Overview Microchip / Product Portfolio 10:00-10:15 Break 10:15-11:00 Selected Topic #1: 11:00-11:15 Break 11:15-11:45 Selected Topic #1: 11:45 Lunch - Discussion and Table Top Exhibition of Dev Kits 2

3 Why Add Touch? Human Interface Design Considerations Output Segmented or Graphical LCD LEDs Buzzers, Speakers Connectivity USB, CAN, LIN, UART, SPI/I 2 C WiFi, BT, RF Wireless, IrDA Input Keypad, Switches, Buttons Touchscreen

4 Broad Solutions Covers Wide Range of Applications Proximity Touch Keys Metal over Cap Grip Detection Sliders Touch Screens Touch Pads Haptics 3D Track & Gesture

5 Cap Sensing System Sensor Controller Board Configuration + OR F/W Development

6 A Few Questions Dedicated chip or embedded support? Indoor or outdoor operation? Gloves? Proximity? Mechanical construction? Power Supply? Feedback? Environment?

7 Only Provider of 1D, 2D & 3D Input Sensing Solutions 2D X-Y Input Sensing Button & Slider 1D Sensing GestIC 3D Sensing Your Idea

8 Features 1D Turnkey or MCU-based Fixed button location Slider/Wheel support Proximity detection Simple sensor design Flexible implementation 2D Turnkey solution Surface gesture support Supports pads and screens Touch location tracking 3D Turnkey solution Surface & air gesture recognition Touchless sensing Cool factor! X-Y-Z center of mass tracking

9 Capacitance A C ε = 0 ε r A d d C Capacitance (Farads) ε0 εr Permittivity of Free Space (8.854 Pico-Farad/meter) Relative Dielectric Constant (unit-less) A Area of Plates (meters²) d Distance between plates (meters)

10 1D Sensing Buttons, Slides, Wheels, Proximity

11 1D CAP Sensors Touch Button Design & Principle Plate 1 Front Panel C = Cf+ Cp Sensor Pad Cf d1 PCB Ground tracks Cp d2 Cp = parasitic capacitance Cf = Finger/touch capacitance d1 = Thickness of front panel εr = Front panel dielectric constant

12 Alternative way to build touch sensor Protective overlay ITO layer with sensor Graphical Layer Connector to PCB

13 1D CAP Sensors Introduction to Sensitivity C = Cf+ Cp Cp needs to be minimized Good board design Thinner front panels for greater sensitivity Typical thickness ~2 mm Selecting the right material Typically glass contributes to a good Cf Material ε r Air 1 Polyethylene 2.25 Polystyrene Glass 4 10 FR Water 80

14 1D CAP Sensors Design Guidelines Keep sensor traces thin and as short as possible Lower overall capacitance/higher sensitivity Sensor pads of same dimension Similar sensor capacitances for easier software decoding Sensor Pad size Fingerprint size Typical sensor diameter from 6 to 10 mm Distance between 2 sensors should be half of their diameter Vddas high as possible Better noise immunity

15 Metal Over Cap Technology In addition to plastic and glass, sense through stainless steel, aluminum, and more Completely waterproof Senses through thick gloves! Braille-friendly

16 Metal Over Cap Technology Whydo wewin? Use polished or brushed metal surfaces including stainless steel and aluminium Industrial Medical Sense through gloves Unaffected by liquids in outdoor or wet environments (appliance) Deploy Braille-friendly interfaces Differentiate a soft touch from a hard touch 10 µm deflection is enough Configurable pressure detector (software) Metal Over Capacitive ON OFF Metal Overlay Spacer Film (or PCB) Adhesive

17 1D CAP Sensing Metal Over Cap Principle User presses front panel Panel Deflects (10 microns) Distance between plates decreases System detects change in capacitance Front Panel Spacer Front Panel Deflection Area Spacer PCB (FR4) Sensor Pad

18 1D CAP Sensing Metal Over Cap Implementation The only difference for the mechanical construction is the introduction of a spacer layer to allow the deflection of the front panel. Needs to be non-deformable Thickness is between 30 µm and 200 µm Common materials are glue, FR4 or Mylar The front panel can be metal, plastic with metal flash/coating, etc.

19 1D CAP Sensing Metal Over Cap Front Panel Thickness Microchip Deflection Tool Thickness Deflection

20 1D Software Design & Integration Proximity Detection Contact-free interaction Wake up device from low power mode High Signal to Noise Ratio (SNR) Detection up to 25cm Advanced noise handling and filtering Lowest Power Consumption (as low as 2uA) Adjustable sampling frequency XLP PIC microcontrollers Flexible, Programmable, Customizable

21 MTCH1xx Turnkey Proximity Controller One (MTCH101) or Two Sensors (MTCH112) Detection range up to 8"/200mm Digital or I2C communication Low power (<5µA) Eval Boards available MTCH101 is $29.99 MTCH112 is $34.99

22 1D Hardware What You Need Turnkey products (black box) can be used Any standard PIC MCU with an A/D converter will do the job! Dedicated peripherals take acquisition processing load off CPU Hardware CVD* & CTMU** Standard Turnkey MTCH10x CAP1xxx PIC12/16LF155x Any Standard PIC w/adc PIC Microcontroller ADC module *CVD: Capacitive Voltage Divider **CTMU: Charge Time Measurement Unit

23 HMID mtouch MCU Portfolio Overview SYSTEM INTEGRATION General Purpose (GP) Over 600 MCUs GP & LCD GP, USB & Graphics GP, USB & LCD PIC16 Up to 32 Cap Touch Ch. PIC10/12 Up to 4 Cap Touch Ch. GP, USB, Ethernet, CAN GP & CAN PIC18 Up to 29 Cap Touch Ch. PIC24F Up to 24 Cap Touch Ch KB Flash pins 8 MIPS KB Flash 6 8 pins 8 MHz PIC24H Up to 32 Cap Touch Ch KB Flash pins MIPS PIC32 Up to 16 Cap Touch Ch KB Flash pins 16 MIPS KB Flash pins 40 MIPS Support: Touch GUI MPLAB Code Configurator >75 parts w/ HW CVD KB Flash pins 200 MHz PERFORMANCE

24 1D Software Design & Integration Strategy: Turnkey or General Purpose PIC MCU? 1D & 2D can be either 3D Turnkey only Turnkey Significantly reduced design cycle Highly simplified implementation Built-in noise robustness Documented API Flexible configuration Parameter access through API Flexible reporting Host (advanced), hardware (simple) General Purpose PIC MCU Dedicated PIC MCU Solution Small MCU (cost control) Integrated PIC MCU Solution Ethernet, USB,. Source code available Built-in noise filtering Flexibility Access to all parameters

25 Questions?? Any details not understood? Where is this applicable? Which applications can I target with this?

26 2D Sensing Touch Screen, Touch Pad

27 2D Surface Sensing Generic 2D Sensor Extension of single touch button principle Uses 1D sensing methods Matrix layout for easy X-Y location tracking Can be implemented on ITO & PCB Supports multi-touch sensing Supports Gesture sensing

28 Surface Location Sensing Electrode Geometry Diamond TX Used for self-sensing Maximum sensor exposure to touch Simple sensor design Simple implementation Single PCB Layer Diamond Comb RX Comb Single Layer Mutual Sensing Used as layout migration from Diamonds Medium/Thick cover lens TX RX TxP TxP Dual Layer Mutual Sensing Backside noise shielding Best with thin cover

29 2D Surface Location Sensing Multi-touch PIC MCU Drives X3 When PIC MCU scans Y3 touch is detected Rx 1 intersection = 1 touch Rx Tx Tx A/D Converter Driver Driver

30 2D X-Y Sensing Hardware Determining Factors Single Touch or Multi-Touch Number of sensing channels/size of sensing area Type of expected Gesture Voltage boost for increased sensitivity Cover layer (Material, thickness) Y-Electrodes MTCH6102 MTCH6301 MTCH6303 X-Electrodes

31 2D X-Y Sensing Hardware Determining Factors MTCH6102 Supports single touch Up to 15 channels (9x6) Low power Active < 12 ua Standby < 500 na Gesture I2C Communication Configuration, reporting MTCH6301 Multi-touch Up to 31 channels (13x18) Up to 4.3 Gesture I2C Communication Configuration, reporting MTCH6303 Multi-touch Up to 46 channels (27x19) From 4 to 10 High voltage drive Using MTCH652 Multi-Touch gesture Pinch/Zoom I2C, USB

32 2D Software Integration Communications: MTCH6102 GUI Baseline Controller Settings Connect/ Disconnect Log RAM Read/Write Gesture History Channel Values Position View

33 2D Software Integration Communications: MTCH6303 GUI

34 2D Software Integration Gesture Decoding Engine N/S/E/W Swipes & Scrolls Edge swipes, Held swipes, Multi-Touch Scrolling Taps Single/Multi tap Pinch & Zoom Relative Wheel (Coming soon) Similar to GestIC technology air wheel

35 Questions?? Any details not understood? Where is this applicable? Which applications can I target with this?

36 3D Sensing A New Way for Human Interface Skip

37 3D Sensing & Gesture Recognition Principle Undisturbed Disturbed Utilizes Electric Field (E-field) sensing for 3D sensing Field distortions translate into 3D hand positions Lowest 3D sensing power consumption, since nearly no energy is transported

38 3D Electrode Design What You Need Turnkey controller approach MGC3030, MGC3130 3D position tracking Gesture reporting + E-Field Sensing Sensing Electrodes

39 3D Sensing & Gesture Determining Factors MGC3030 No 3D position tracking Gesture reporting I2C & Gesture Port Approach detection I2C Communication SSOP28 MGC3130 3D position tracking Gesture reporting I2C & Gesture Port Approach detection I2C Communication QFN28

40 3D Software Integration Colibri Suite Provides GesturePort MGC3x30 in standalone Flick Gestures Approach Detection power saving self wake-up Position Tracking hand tracking in 3D Circle Gestures Sensor Touch touch, multitouch, tap, double tap AirWheel real time rotational control

41 3D Electrode Design GestIC Technology Sensor Pad Examples 95x60mm reference electrode

42 3D Sensing and Gesture PC Software to Visualize Sensor Data and to Control MGC3xxx Gestures Position Raw Data Runtime Control Demos Update MGC3130 Parameterization AFE DSP - I²C Sniffing

43 GestIC System Benefits Power Blind Spots Update Rate in mw GestIC Optical GestIC Optical! GestIC Optical Detection Range Optical GestIC benefits: 100% ambient light independent GestIC consumes a fraction of power, in cm GestIC No blind spots Higher update rate

44 Questions?? Any details not understood? Where is this applicable? Which applications can I target with this?

45 Product Portfolio Overview 1D Proximity, Keys and Sliders 2D X-Y Screens/Pads Position and Gestures 3D X-Y-Z Position 3D Gestures Turnkey MTCH1xx 1-8 Keys, Act. Guard, Proximity Standalone Operation I 2 C interface, CAPxxxx 3-14 Keys, Sliders Proximity, LED driver I 2 C interface MTCH6xxx Single/Multi Touch 2D gestures Lowest Power MGC3xxx 3D Position Sensing Gesture Recognition GesturePort Firmware PIC framework Supports 8/16/32 bit Free download Complete Access Use Standard ADC Easy Integration PIC framework Supports 8/16/32 bit Royalty free License Complete Access Use Standard ADC Path to Integration

46 Selection of Application Notes AN mtouch Sensing Solution Acquisition Methods Capacitive Voltage Divider (CVD) AN Microchip CTMU for Capacitive Touch Applications AN mtouch Conducted Noise Immunity Techniques for the CTMU AN Techniques for Robust Touch Sensing Design AN mtouch Sensing Technology Water Resistance AN mtouch Metal Over Cap Technology AN Implementing Metal Over Capacitive Touch Sensors

47 Atmel Capacitive Touch Platforms Microcontroller Business Unit Touch Business Unit QTouch Technology Platform maxtouch Technology Platform

48 Atmel QTouch Capacitive Touch Solutions QTouch Library QTouch Safety Library QTouch Surface Library Application Specific Touch on Atmel MCUs Appliance Certified Touch on Atmel MCUs Touch Surface on Atmel MCUs Ready-to-Use Touch Controllers For maxium ease-of-use, Atmel offer pre-programmed and pre-validated touch controllers that works out of the box

49 MaXTouch - Touch Panel Design Flow Pure ITO Sensor Manufacturers Project Definition FPC Design Sensor Design Board Design FPC Layout Sensor Layout Board Layout Typical area of competence of pure ITO sensor manufacturer FPC Build Sensor Build Touch Sensor Assembly Board Build Test/Tune Touch Sensor + LCD Module Test/Tune System Prototype

50 MaXTouch - Touch Panel Design Flow maxtouch CTP Module Partners Customer & CTP Module Partner Project Definition FPC Design Sensor Design Board Design FPC Layout Sensor Layout Board Layout CTP Module Partner FPC Build Sensor Build Touch Sensor Assembly Test/Tune Board Build Touch Sensor + LCD Module Test/Tune Customer & CTP Module Partner System Prototype

51 Module Partners: The System Architects Would you trust the design of your own home to construction workers or an architecture firm? Sensor Drawing FlexPCB Drawing maxtouch Configuration Host Drivers

52 Getting Started with the Tools

53 MTCH10x: Direct replacement for Mechanical buttons MTCH108 8 x Input / Guard Option 8 x Output Adjustable Sensitivity Low Power Mode Features & $29.95 MTCH102 2 x Input / Guard Option 2 x Output Adjustable Sensitivity Low Power Mode MTCH105 5 x Input / Guard Option 5 x Output Adjustable Sensitivity Low Power Mode MTCH101 1 x Input 1 x Output Adjustable Sensitivity Low Power Mode Supports Water Resistance 6 Pin 8 Pin 14 Pin 20 Pin

54 MTCH10x and Curiosity Board for Direct replacement of Mechanical buttons Low Cost mtouch Evaluation Kit

55 1D Buttons & Slider Tools Low Cost mtouch Evaluation Kit Microchip Part Number: DM Dawn GUI PIC16LF1559 Dual Hardware CVD ADC High speed ADC (Tad= 0.25us) 1 Proximity Sensor 5 Touch Buttons All Different sizes LED Output Routable to custom hardware I2C, UART Communications Detachable Sensor Pad Connectable to custom Sensors

56 1D Buttons & Slider Tools 1D Turnkey Evaluation Boards USB for GUI interface CAP1xxx GUI I 2 C for System Interface Proximity and Keys Microchip Part Numbers: CAP11xx: DM CAP12xx: DM160223

57 2D Touch Screens & Pads Tools MTCH6102 Development Board 9x6 touchpad sensor 0.7mm Lexan cover layer MiniUSB connector Microchip Part Number: DM Onboard I2C to USB (PIC16LF1454) Standalone MTCH6102 I2C connection to host MTCH6102 Utility

58 2D Touch Screens & Pads Tools MTCH6303 Multi-Touch Development Kit Microchip Part Number: DV MTCH6303 Utility Multi-Touch up to 10 touches 5 touches typically at 100Hz+ each 27 Rx X19 Tx channels support 8 touch screens (larger possible) MTCH652 high voltage driver companion chip High signal-to-noise ratio (SNR) Single & multi-finger gesture taps, swipes, scrolling and pinching and zooming USB & I2C communication

59 3D GestIC Tools HillStar Development Kit 95x60mm reference electrode MGC3130 Controller Board I2C/USB Bridge Microchip Part Number: DM Aurea GUI GestIC Technology Electrode Design Guide MGC3130 with Colibri Suite I2C Reference Code Supported by Aurea GUI SDK For Windows 7 & Windows 8 3D Position Tracking & 3D Parametrization

60 3D GestIC Tools 3D GestIC Tools PC peripheral + DevKit 10 Finger Multi-Touch Win7/8 + MajorOS 2D/ 3D Gestures including AirWheel all browsers, e.g. Google image search GUI / Drivers / Apps / Games 3DTouchpadGUI API / SDK Winner of the Japan Embedded Systems Association (JASA) Special Award Microchip Part Number: DM160225

61 Presenter Notes The following 8 slides are optional. They are a collection of possible solutions An Application Guide Skip 61

62 System Design / Application Guide

63 Integration Considerations Indoor/Outdoor Lighting Conditions Display size Resolution Input Method Software GUI Design Product Lifespan Power Consumption Product s Application Environmental Conditions

64 System Design: Access Control Environmental: Outdoor conditions Input: Gloved finger, Braille, static keypad Display consideration: Not necessary Power: Main/Battery Cost: Sensitive Other: Proximity detection Metal Over Capacitive ideal

65 System Design: Home 3D Gesturing for smart switches Low Cost Touch Screens In Security Systems Touch Buttons, Sliders, and Metal over Capacitive for Lighting Controls 3D Gesturing touch buttons, touch screens for thermostats

66 System Design: Consumer Electronics Low Power, Low Cost Touch Displays. Grip Detection 3D Audio Controls (and other) Low Power, Low Cost Touch Pads Touch Keys & Sliders for TV, Media & other boxes

67 System Design: Appliances Touch Keys On Glass Metal Over Capacitive Robust Capacitive Touch Keys & Sliders Proximity Approach Detection Water Level Sensing Hands Free 3D Controls (GestIC)

68 System Design: Computing Capacitive Touch Sensing for Special Function Keys Also: Metal Over Cap For metal cases Proximity Detection for Keyboard Backlighting Single Chip for Low Power Touch Pad Keyboard Scan & Proximity Detection Grip Detection for Power Savings 3D Sensing for Keyboard/Touch Pad 3D Gesturing Low Power Touch Pads for Scroll wheel replacement

69 System Design: Automotive Touch Buttons Grip Detection Touch and Proximity Touch Screens Proximity Touch Buttons Proximity Touch Buttons Touch Pads

70 Summary Three Sensing Technologies Buttons and Sliders (1D) Touch Pads and Screens (2D) GestIC technology and Air Position Tracking (3D) Major steps to designing your Capacitive Sensing Application Specification Designing/Selecting sensors Designing controlling hardware Designing/Integrating software Calibrating Most of design effort spent on optimizing 2 parameters Maximizing sensor sensitivity Minimizing noise impact Multiple Turnkey solutions available Hardware: CAP1xxx, MTCHxxxx, MGC3x30 Software: mtouch sensing solution framework, MTCH6xxx code* *Available under agreement

71 Thank You! mtouch Sensing Solution

72 Trademarks The Microchip name and logo, the Microchip logo, dspic, KeeLoq, KeeLoq logo, MPLAB, PIC, PICmicro, PICSTART, PIC 32 logo, rfpic and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, chipkit, chipkit logo, CodeGuard, dspicdem, dspicdem.net, dspicworks, dsspeak, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mtouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rflab, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. 2011, Microchip Technology Incorporated, All Rights Reserved.