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  • Author Author: Former Member
  • Date Created: 12 Apr 2011 2:12 PM Date Created
  • Last Updated Last Updated: 12 Apr 2011 2:21 PM
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Handheld Digital Altimeter

Instrumentation & Measurement Solutions -
Handheld Digital Altimeter

Handheld digital altimeters are portable devices that measure altitude based on the change of atmospheric pressure. However, a variety of additional features such as clock, atmospheric pressure, compass and weather information (temperature, humidity etc.) can usually be implemented within a single device. This combination makes it an ideal choice for mountaineers, hikers, adventure enthusiasts and search & rescue staff working in the field.

A handheld digital altimeter is composed of sensors, signal conditioning circuit, ADCs, MCU, human-machine interface, and power supply. The sensors used in a single device may include barometric sensor, magnetic sensor, temperature sensor and humidity sensor. These sensors typically provide analog output, and therefore a signal conditioning circuit (of which amplifiers are the core components) is required to implement amplification and filtering of sensors’ small signals. The processed signals are then converted into digital signals by ADCs so that MCU can calculate based on digital input and certain algorithm to get results of altitude, atmospheric pressure, temperature, humidity, etc. The human-machine interface on a handheld digital altimeter includes several functional pushbuttons and a display for showing information. The power supply consists of battery, power management and battery management. The power management is used to convert battery power into different voltages to satisfy different requirements. The battery management provides control and protection during battery charge process.

In order to ensure that the handheld digital altimeters have a small size and capability of working properly for a long life even in harsh environment, the components with high integration, low power, wide temperature range and small package, and a large-capacity rechargeable battery that can work in a wide range of temperature should be selected. Meanwhile, the approaches that can reduce system’s power consumption should be adopted as many as possible during system design.

 

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Application Notes

FREESCALE SEMICONDUCTORMCULCD Driver SpecificationAN3796MC9S08LL16  Click Here
FREESCALE SEMICONDUCTORMCUMigrating from the MC9S08LL16 to MC9S08LL64 MicrocontrollerAN3990MC9S08LL16  Click Here
TEXAS INSTRUMENTS MCUUsing power solutions to extend battery life in MSP430 applicationsMSP430Click Here
TEXAS INSTRUMENTS MCUDriving Large LCDs with LCD Peripheral of the MSP430MSP430Click Here
ANALOG DEVICES ADCUsing the AD7328BRUZAD7328BRUZ 8-Channel ADC in Applications with Single-Ended Industrial-Level SignalsAD7328BRUZAD7328BRUZClick Here
MICROCHIPMCUSoftware Real-Time Clock and Calendar Using PIC16F1827AN1303PIC16F1827Click Here
MICROCHIPMCUnanoWatt & nanoWatt XLP(TM) Technologies: An Introduction to Microchip's Low Power devicesAN1267Click Here
MICROCHIPMCUImplementing an LCD Using the PIC16F1947 MicrocontrollerAN1354 PIC16F1947Click Here
TEXAS INSTRUMENTS MCUUsing Two MSP430F4xx Devices to Drive Additional LCD SegmentsMSP430F4xxClick Here
ManufacturerProduct TypeAN TitleAN NumberPart NumberURL
WHITE PAPERS
TEXAS INSTRUMENTS MCUDebunking the Ultra-low Power Comparison: MSP430 vs. Microchip XLP Tech Brief Click Here
FREESCALE SEMICONDUCTORMCUFreescale's Next Generation 8-bit LCD SolutionsClick Here
FREESCALE SEMICONDUCTORMCUPractical Power Comparison: MC9S08LL16 offers 70 percent reductionClick Here
FREESCALE SEMICONDUCTORMCUFreescale Low-Power Microcontroller Solutions BrochureClick Here
ANALOG DEVICES ADC2011 Trends in Data ConversionClick Here
TEXAS INSTRUMENTS MCUMSP430 Family Mixed-Signal Microcontroller Application Reports  Click Here
TEXAS INSTRUMENTS MCUMSP430(tm) Hardware Tools User's GuideClick Here
FREESCALE SEMICONDUCTORMCUMC9S08LL16 MCU offers 70 percent reductionClick Here
TEXAS INSTRUMENTS MCUMSP430 Value Line LaunchPad Development KitClick Here
ManufacturerProduct Type White Paper Title URL
EVALUATION KITS
FREESCALE SEMICONDUCTORMCUS08LL Demonstration Board DEMO9S08LL16DEMO9S08LL16MC9S08LL16Click Here
FREESCALE SEMICONDUCTORMCUTWR-S08LL64 Tower System 8-bit Segment LCD Module TWR-S08LL64-KITTWR-S08LL64-KITMC9S08LL64Click Here
FREESCALE SEMICONDUCTORMCUMCF51QE128 Evaluation BoardEVBQE128EVBQE128 MCF51QE128Click Here
FREESCALE SEMICONDUCTORMCUMCF51QE128 Demonstration Board DEMOQE128DEMOQE128MCF51QE128Click Here
FREESCALE SEMICONDUCTORMCUQE8 Demonstration board DEMO9S08QE8DEMO9S08QE8MC9S08QE8CLCMC9S08QE8CLCClick Here
FREESCALE SEMICONDUCTORMCUDEMO9S08JM16DEMO9S08JM16 Lab tutorialsDEMO9S08JM16DEMO9S08JM16 MC9S08JM16 Click Here
FREESCALE SEMICONDUCTORMCUDEMOJM Lab Supplement for the 8-bit FlexisTm JM60DEMO9S08JM60MC9S08JM60Click Here
FREESCALE SEMICONDUCTORSensorMiniature SPI Digital Barometer KitKITMPL115A1SPIKITMPL115A1SPIMPXM2102AClick Here
MICROCHIPMCUMPLAB Starter Kit for PIC18F MCUDM180021DM180021PIC18FClick Here
MICROCHIPMCUPIC18 Explorer Board  DV164136DV164136PIC18FClick Here
MICROCHIPMCUExplorer 16 Development BoardDM240001DM240001PIC24FClick Here
MICROCHIPMCUExplorer 16 Starter KitDV164033DV164033PIC24FClick Here
MICROCHIPMCUMPLAB Starter Kit for PIC24FDM240011DM240011PIC24FClick Here
MICROCHIPMCUXLP 16-bit Development Board  DM240311DM240311PIC24F16KA102 Click Here
MICROCHIPMCUPICDEM LCD 2 Demonstration Kit User's Guide DM163030DM163030PIC18F85J90-I/PTPIC18F85J90-I/PTClick Here
MICROCHIPMCUPICDEMTm 4 Demonstration BoardDM163014DM163014PIC18F1320Click Here
MICROCHIPMCUPIC16F1937 Plug-in Module for PICDEM PIC18 Explorer BoardMA160012MA160012PIC16F1937Click Here
MICROCHIPTemperature SensorMCP9700 Temperature-to-Voltage Converter PICtail? Demo Board MCP9700DM-PCTLMCP9700DM-PCTLMCP9700 Click Here
MICROCHIPTemperature SensorMCP9700 Thermistor Demo Board User’s Guide MCP9700DM-TH1MCP9700DM-TH1MCP9700 Click Here
TEXAS INSTRUMENTS MCUMSP430FG4618/F2013 Experimenter Board MSP-EXP430FG4618MSP-EXP430FG4618MSP430FG4618Click Here
TEXAS INSTRUMENTS ADCADS1115 Performance Demonstration Kit ADS1115EVM-PDKADS1115EVM-PDKADS1115Click Here
NATIONAL SEMICONDUCTOR SensorSensor AFE Digital Controller BoardLMP90100EB/NOPBLMP90100EB/NOPBLMP90100Click Here
BOSCHPressure sensorBMP085-0330SBO008BMP085-0330SBO008 - Daughter BoardBMP085-0330SBO008BMP085-0330SBO008BMP085-0330SBO008BMP085-0330SBO008Click Here
SENSIRIONHumidity and Temperature SensorEvaluation Kit EK-H2 for Humidity Sensors SHTxxEK-H2SHT75Click Here
SENSIRIONHumidity and Temperature SensorEvaluation Kit EK-H4 for Humidity Sensors SHTxxEK-H4SHT75Click Here
OLIMEXMCUMSP430-449STK2MSP430-449STK2MSP430-449STK2MSP430-449STK2MSP430-449STK2MSP430-449STK2Click Here
OLIMEXMCUHEADER FOR MSP430F449 MSP430-H449MSP430-H449MSP430-449STK2MSP430-449STK2Click Here
HONEYWELL S&CCompass sensorSENSOR, DIGITAL IC COMPASS, DEMOHMC5843-DEMOHMC5843-DEMOHMC5843Click Here
HONEYWELL S&CCompass sensorSENSOR, DIGITAL IC COMPASS, EVALHMC5843-EVALHMC5843-EVALHMC5843Click Here
HONEYWELL S&CCompass sensorMagnetic Sensor ModuleHMR3400HMR3400HMR3400HMR3400Click Here
HONEYWELL S&CCompass sensorMagnetic Sensor ModuleHMR2300-D21-232HMR2300Click Here
HONEYWELL S&CCompass sensorMagnetic Sensor ModuleHMR3000-D00-485HMR3000-D00-485HMR3000Click Here
HONEYWELL S&CCompass sensorMagnetic Sensor ModuleHMC2003HMC2003HMC2003HMC2003Click Here
HONEYWELL S&CCompass sensorMagnetic Sensor ModuleHMC5883L-DEMOHMC5883L-DEMOHMC5883LClick Here
HONEYWELL S&CCompass sensorMagnetic Sensor ModuleHMC5883L-EVALHMC5883L-EVALHMC5883LClick Here
HONEYWELL S&CCompass sensorMagnetic Sensor ModuleHMR3500HMR3500Click Here
ManufacturerProduct TypeEvaluation Kits TitleEVKs Part NumberPart NumberURL

 

TRAINING

SUPPLIER                    

FREESCALE SEMICONDUCTORSensorFreescale APEX (altitude pressure experimental design)MPL115AClick Here
FREESCALE SEMICONDUCTORMCUFreescale DEMO9S08LL16DEMO9S08LL16 Out of the Box OverviewMC9S08LL16Click Here
FREESCALE SEMICONDUCTORMCUGetting Started with RS08 MCUsClick Here
FREESCALE SEMICONDUCTORMCULCD Introductory VideoMC9S08LL16Click Here
FREESCALE SEMICONDUCTORMCULow End Microcontrollers and LCD - Alta performanceMC9S08LL16Click Here
FREESCALE SEMICONDUCTORMCUS08LL16 Thermostat Video MC9S08LL16Click Here
FREESCALE SEMICONDUCTORMCUS08SF 8 Bit Microcontrollers and Development KitsClick Here
FREESCALE SEMICONDUCTORMCUSave your energy - FlexisTm Ultra-low-power 8-bit S08QE128 MCUS08QE128Click Here
FREESCALE SEMICONDUCTORMCUSegment LCD MCU Solutions with Low Power FeaturesMC9S08LL Click Here
FREESCALE SEMICONDUCTORMCUTower System: TWR-S08LL64 Kit OverviewMC9S08LL64Click Here
FREESCALE SEMICONDUCTOREva KitTWR-S08LL64 Quick Start DemoMC9S08LL64Click Here
MICROCHIPMCU8-Bit CMOS Microcontrollers With nanoWatt TechnologyClick Here
MICROCHIPMCUAn Introduction to nanoWatt XLP: PIC18F46J50Click Here
MICROCHIPMCUIntroducing nanoWatt XLP TechnologynanoWatt XLPClick Here
MICROCHIPEva KitIntroduction to the PIC24H Starter KitnanoWatt XLPClick Here
MICROCHIPMCUnanoWatt XLP Demo VideonanoWatt XLPClick Here
MICROCHIPMCUPIC18F2XK20/4XK20 8-Bit Microcontroller FamilyClick Here
MICROCHIPEva KitXLP 16-bit Development Board  DM240311DM240311Click Here
TEXAS INSTRUMENTSMCUGetting Started with MSP430 MCUsClick Here
TEXAS INSTRUMENTS MCUMSP430 Getting Started WorkshopMSP430Click Here

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