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TM

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-

Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PEG, PowerQUICC, Processor

Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale

Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis,

Layerscape, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, Ready Play,

SafeAssure, the SafeAssure logo, SMARTMOS, Tower, TurboLink, Vybrid and Xtrinsic are

trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of

their respective owners. © 2013 Freescale Semiconductor, Inc.

May 2013

2

TM Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PEG, PowerQUICC,

Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet,

Flexis, Layerscape, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, Tower, TurboLink, Vybrid and

Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2013 Freescale Semiconductor, Inc.

• As aging and obesity become more prevalent, the need for

easy-to-use and accurate healthcare devices increases.

• This class also covers pressure sensor, touch sensor and

acceleration sensor in healthcare applications

3





• Pressure Sensor

• Touch Sensor

• Acceleration Sensor

• Healthcare

− Trends

− Applications/Solutions

• Session Review and Wrap-up

4





What is Pressure Sensor? 压力传感器

Pressure Sensor is a device used to measure an absolute value or a change of the pressure of gases or liquids, and converts it into a useful input signal for a decision making center.

Pressure sensors can also be used to indirectly measure other variables such as fluid/gas flow, speed, water level, and altitude.

Data Processing,

Control and Connectivity Sensing

Element

Analog or

Digital Output

Pressure

5





Pressure Sensors

Uncompensated

MPX10/12 10 kPa D / G

MPX53 50 kPa D / G

Compensated

MPX2000 10, 40, 50, 100,

200 kPa A / D / G / V

Integrated

MPX4000 6, 80, 105, 115, 250 kPa

A / D / G

MPX5000 4, 10, 50, 100, 115, 150,

500, 700, 1000 kPa A / D / G / V

MPX6000 105, 115, 130, 250, 300,

400 kPa A / V

MPX7000 ±2, ±7, ±25 kPa

D / G

Digital

MPL115A 50 to 115 kPa

A SPI/I2C

MPL3115A2 50 to 110 kPa

A SPI/I2C

Measurement Type:

A: Absolute

D: Differential

G: Gauge

V: Vacuum

Note:

Typically we only guarantee clean dry air for our

pressure sensors.

Our pressure sensors are based on a silicon

diaphragm and can tolerate a pressure that alternates

from positive to negative. It is important that the applied

pressure not rise above the overpressure specification

in the positive or negative range.

6





• Absolute Pressure Sensor

Altimeter / Barometer

Measure an external pressure relative to a zero-pressure reference.

• Differential Pressure Sensor

Air Flow / Filter Pressure / Pressure Drop

Measure the difference between two pressures applied simultaneously.

• Gauge Pressure Sensor

Blood Pressure / Water Level / Leak Detection

Measure the pressure relative to atmospheric pressure.

• Vacuum Pressure Sensor

Vacuum Cleaner / Pump

Measure the suction pressure relative to atmospheric pressure.

P1

Vacuum

Constraint Wafer

P1

P2

P1

P2 = ATM

P1

P2 = ATM

7





• Uncompensated Pressure Sensors: 10 to 50 kPa

− High sensitivity

− Lowest device cost

− Low-level output allows flexibility of signal conditioning

• Compensated Pressure Sensors: 10 to 200 kPa

− Reduced device to device variations in offset & span

− Reduced temperature drift in offset & span

− Low level output allows flexibility in signal conditioning

• Integrated Pressure Sensors (IPS): 2 to 1000 kPa

− No amplification needed, direct interface to MCU

− Signal conditioning, calibration of span & offset, temperature compensation included on-chip

− Lower piece part count

Sensing Element

Sensing Element + Temperature Compensated & Calibrated

Sensing Element + Temperature Compensated & Calibrated+ Signal Conditioning

8





MPL115A: Miniature Digital Barometer

− 50 to 115 kPa absolute pressure

− 10-bit ADC,1 kPa accuracy

− Digital output options

MPL115A1 for SPI applications

MPL115A2 for I2C applications

MPL3115A2: High Precision Altimeter

− 20/50 – 110 kPa absolute pressure

− 20-bit ADC, less than 1 foot / 0.3 m resolution

− I2C digital output interface

− Compensated, direct reading in SI units

9





MPAK

MPAK Axial

Port

Super

Small

Outline

Package

(SSOP)

Dual

Port

Case

423A

Case

482 Vacuum

Port

Small

Outline

Package

(SOP)

Side

Port

Dual

Port

Through

Hole

Axial Port

Case

1317

Tire

Pressure

Monitor

Axial

Port

Through

Hole 482B Axial

Port

Unibody Medical

Chip

Pak

Through

Hole

Axial Port

Through

Hole

Axial Port

NEW!!

LGA

MPL115A/MPL3115A

5x3x1.1mm

Medical Industry-selected Packages

10





• Pressure Sensor

• Touch Sensor


• Healthcare

− Trends



11





• MPR121 提供了业界极低的29 μA运行电流和3uA待机电流，非常适合于电池供电的手持设备应用

• MPR121具备自动配置和完善的滤波处理，集成了所有基本的电容触摸检测处理，工程师可以用它快速完成复杂的触摸设计

• MPR121同时拥有低成本和灵活可靠的特点，可以实现从简单到复杂的应用。

A Touch Smarter –

飞思卡尔的第二代低功耗智能触摸传感器提供了12个通道和内置独立的智能控制处理引擎，具有很强的扩充能力实现，可以非常方便的实现从低成本简单按键到复杂的触摸应用

低功耗

智能配置

灵活/可靠

12





• 12 路输入通道

• 8路可以复用做LED驱动或 GPIO.

• 1.71~3.6V电源电压

• 典型电流Idd=29 μA （12 通道）

• 待机电流3μA

• 完善智能的触摸检测机制:

− 每通道独立自动连续基线校正

− 每通道独立自动电极充放电配置

− 每通道独立的触摸和释放阈值提供回滞

• 接近检测模式使用合并电极提供优化的接近检测

• 提供10-bitADC检测电压输出，触摸状态报告

• I2C通讯和 IRQ中断输出

• 使用地址线可以选择4个I2C地址

• 3x3x0.65mm, QFN_20

• -40°C to +85°C

http://www.freescale.com.cn/Products/sensors/MPR121.asp

13





• 实现的功能 − 触摸按键

− 触摸滑动条 − 触摸转轮

− 触摸板 − 接近检测 − 握持检测

• 应用的产品领域

− 移动电话

− 媒体播放器 − 计算机外设

− 遥控器 − GPS导航

− 智能本，上网本 − 电子书

− AV系统，机顶盒

− 打印机 − 家电

− 智能家居 − 智能玩具 − 医疗设备

14





• Pressure Sensor

• Touch Sensor


• Healthcare

− Trends



15





MMA865x MMA845x MMA8450 MMA8491 FXLN83xx

• Digital Output

• Cost Efficient

− 1mg/count

sensitivity

• High Perf.

• Rich Features

− P/L detection

− High Pass Filter

− Transient

Detect

• 2x2 mm package

• Digital Output

• Extreme Perf.

− .25mg/count

sensitivity

• Extended Features

− FIFO

− Configurable

P/L trip angles

− High Pass Filter

− Transient

Detect

• Digital Output

• Low Voltage

− 1.71-1.89V

• Digital Output

• Extreme Low Power

− 0.35uA/Hz

• Cost Efficient

− 1mg/count

sensitivity

• Industrial Package

• Analog Output

• High Bandwidth

− 4.9kHz

• Low Voltage

− 1.71-3.6V

• Industrial Package

• Extended Temp Range: 105C

Consumer Industrial

(Newton) (Veyron) (Proton) (Plutino) (Pluto)

16





• Differentiating Points

− Output Noise (99ug/rHz)

− Offset and Sensitivity Accuracy

− Resolution up to 0.25mg/count

• Product Features

− 1.95V to 3.6V supply voltage

− ±2g/±4g/±8g dynamically selectable

− Output data rate (ODR) from 800Hz to 1.563Hz

− I²C digital output interface w/interrupts

− Embedded orientation (Portrait/Landscape)

− Embedded High Pass Filter

− Embedded 32 sample FIFO

• Typical Applications

− Smart Mobile Devices

− Digital Cameras

− PCs

MMA8451Q 14-bit output, 99ug/rHz noise

High Pass Filter w/ DSP functions

Configurable Orientation detect

FIFO

MMA8452Q 12-bit output


Orientation detect

Package 3x3x1mm QFN, 0.5mm pitch

Availability Samples: NOW

Production: NOW

17





• Differentiating Points

− Output Noise (150ug/rHz)

− Offset and Sensitivity Accuracy

− Resolution up to 1mg/count

• Product Features

− 1.95V to 3.6V supply voltage

− ±2g/±4g/±8g dynamically selectable

− Output data rate (ODR) from 800Hz to 1.563Hz

− I²C digital output interface w/interrupts

− Embedded orientation (Portrait/Landscape)

− Embedded High Pass Filter

− Embedded 32 sample FIFO

• Typical Applications

− Smart Mobile Devices

− Digital Cameras

− PCs

MMA8652FC 12-bit output, 160ug/rHz noise


Configurable Orientation detect

FIFO

MMA8653FC 10-bit output

Orientation detect

Package 2x2x1mm DFN, 0.4mm pitch

Availability Samples: NOW

Production: NOW

18





• Pressure Sensor

• Touch Sensor


• Healthcare

− Trends



19





20





MPXM2051 key Features:

• Pressure range 0~50kPa Gauge

• Temperature Compensated Over 0°C to +85°C

• Linearity: +/- 0.3%

• Full Scale Span: 40 +/- 1.5mV

• Offset: 0+/- 1.0mV

• Available in Easy-to-Use Tape & Reel

• Ratiometric to Supply Voltage

• Gauge Ported

Blood Pressure Monitor Module

MPXM2051 (Measurement)+MPXM2053(Protection)

MPXV5050

CO2 Module

MPXV2010 (Flow measurement)

MPL3115A2 (Digital Barometer)

http://www.flyde.cn/sampleroom/product4567.htm

21





Continuous

Positive

Airway

Pressure

(C.P.A.P.)

• Positive airway pressure (PAP) is a method of respiratory ventilation used primarily in the treatment of sleep apnea.

• Barometric measurement used to address altitude deviation.

Air Pressure Management System

MPXV5004GC6T1

MPXV7002DP

Barometric Measurement

MPL115A

MPL3115A

Touch Sensors

MPR031, 121

TSS

22





• Application Needs:

− Negative and positive pressure

− Low pressure range

− (+/-2kPa, 4kPa, 6kPa, 10kPa)

− Output scalable for MCU interface

No amplifier needed

− Barometer to offset altitude influence

− Intuitive user interface

Pressures - Air Flow Measurement

MPX2010

MPXV7002DP

MPXV5004DP

- Barometric Measurement

MPXH6115A

MPL115A1

MPL3115

Pressures – Touch

TSS

• System to support patient

breathing during times of

diminished lung capacity.

23






− 0-40kpa Range

− Low Cost – Disposable application.

− Safe - Polysulfone Case Material

(Medical, Class V Approved)

− Accurate

− Integrated Temperature

Compensation and Calibration

− Ratiometric to Supply Voltage

Pressure Sensors

MPX2300DT

• In-line measurement

Application:

− Pulse / pressure measurement.

− IV Drip counting

24






− Gauge pressure

measurement

− Pressure range <10kpa

− Potential for multiple sensors

− Calibrated / Compensated

− MCU interface capability

Pressure Sensors

MPX5050DP

MPX5010DP

MPXM2010GS

• Addresses

− Necrosis of the muscle

− Pressure sores ulceration

• Alternate use:

− Patient movement

25





• The system provides the optimal hemo-dynamic profile by applying intermittent, sequential pressure to the patient’s leg in a systematic pattern, increasing the peak venous velocity (PVV) of venous blood flow and reducing the risk of clot formation.

Pressure Sensors

MPX2010

MP3V5010G

MP3V5050G

Touch Sensors

MPR031, 121

Continuous

Enhanced

Circulation

Therapy

(C.E.C.T.)

System

26





• Negative Pressure Wound Management, or Closed Wound Suction (CWS) is a noninvasive treatment by which controlled localized negative pressure (suction) is delivered to a wide variety of wounds.

Pressure Sensors

MPL115A

MPXM2053GS

MPXV5100GC6U

User Interface / Buttons

MPR031, 121

TSS

Negative

Pressure

Wound

Therapy

(N.P.W.T.) Unit

27





27

The MPL115A digital pressure sensor essentially can act as a vacuum sensor at altitudes below 10,000 Feet. Broader pressure range is achieved closer to Sea Level.

MPL115A as

vacuum sensor

MPL115A as

barometric sensor

PUMP

Suction Pressure

about 40 kPa below

Po at 61 kPa

Atmospheric

Pressure, Po at

about 101 kPa

PCB

Wound

BANDAGE

28





Position cuff on left

wrist with left thumb

facing upward

Press start button.

Position sensor

detects correct

placement of arm in

relation to the heart.

Once wrist is in the

correct position the

cuff will inflate and take

the measurements.

Reading is displayed

on the LCD screen

Optional Modules

Sensors

Analog

Peripherals

MCU

Bleed

Valve

Valve

Control

Motor

Display

Pressure

Sensor

Keypad

Tilt Sensor (Accelerometer)

Voltage

Regulatio

n

Power

Source

MCU

Motor

Control

Bluetooth

Radio

Pressure Sensors

MPXV5050GP

MPXM2053GS

Accelerometers

MMA845x

Touch Sensors

MPR031, 121

http://www.omronhealthcare.com/enTouchCMS/app/viewDocument?docID=27

29





• Pressure Sensor

• Touch Sensor


• Healthcare

− Trends



30





• External:

− freescale.com/sensor

− freescale.com/industrial

• Collateral:

− Sensor Toolbox

− Application Notes

− White Papers

− Webcasts

− Training Material

31





• Sensors

− www.freescale.com/sensors

− http://www.freescale.com/sensingplatform

− http://www.freescale.com/sensordata

− www.freescale.com/mems

• Sensor Products

− www.freescale.com/xyz

− www.freescale.com/magnetic

− www.freescale.com/pressure

− http://www.freescale.com/sensortoolbox

• Blogs: Smart Mobile Devices

− http://blogs.freescale.com/author/michaelestanley/

• Twitter: SensorFusion

− www.twitter.com/SensorFusion

http://www.freescale.com/sensors

http://www.freescale.com/sensingplatform

http://www.freescale.com/sensingplatform

http://www.freescale.com/sensordata

http://www.freescale.com/sensordata

http://www.freescale.com/mems

http://www.freescale.com/xyz

http://www.freescale.com/magnetic

http://www.freescale.com/pressure

http://www.freescale.com/sensortoolbox

http://www.freescale.com/sensortoolbox

http://blogs.freescale.com/author/michaelestanley/



http://www.twitter.com/SensorFusion

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