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11. Program flow chart for car navigation systems

An example of car navigation systems is shown in below program flow chart.

Correcting location

and direction

Start

Measuring speed

Averaging gyro

output for 1 second

Motion of car

Calculating

location

Renewing offset

End

End

Sampling

No

Yes

Yes

No

Stopping

Moving

Measuring Gyro

output

1 second

passage

www.DataSheet4U.com

Содержание ENV-05F-03

Страница 1: ...cheng Rd Banqiao City Taipei County 220 Taiwan R O C E Mail etek etek com tw http www etek com Angular Velocity Sensor MODEL ENV 05F 03 User s Manual Version1 0 Please read this manual before operating the unit Published 4 April 2000 ETEK NAVIGATION INC www DataSheet4U com ...

Страница 2: ... and circuit configuration thus making it possible to provide outstanding performance This sensor can be used for positional control and posture control of a moving object requiring high precision measurements 1 Features On Board mount type for easy PCB installation Low height of 23mm capable of being installed in a one DIN size box 2 Applications Dead reckoning function in car navigation systems ...

Страница 3: ...s Temp coefficient Scale factor reference Ta at 10 60 C at 30 80 C 5 10 FS Drift at 30 80 C 9 deg s Start up Measure Vo after 5s 1 deg s 10mi n Noise level 10kHz noise 20 mVrms Linearity in the Omax 0 5 FS Response Phase delay 90deg 10 Hz Dependence on Supply voltage Output 0 8 1 2 Scale factor 0 8 1 2 Operating temp range Topr 30 80 C Storage temp range Tstg 40 85 C Weight 20 g Dimension 11 5 D x...

Страница 4: ...9 6 2 15 9 05 12 5 2 54 4 2 0 t 0 3 23 2 4 0 1 2 3 3 0 6 t 0 35 Unit mm Tolerance 0 5 Terminals Description 1 Supply input 2 Ground common 3 Sensor Output output Y Axis X Axis Z Axis Sense Axis CW CCW 0 3 www DataSheet4U com ...

Страница 5: ...n PCB t 1 6mm 6 Observe the following rules If not characteristics might vary due to soldering heat Soldering iron Flow soldering Terminal 350 5deg C 5s or less Tab 350 5deg C 10s or less Soldering 250 5deg C 5s or less Preheating 105 10degC 2min or less 7 Tabs can be bent only once 6 Terminal connection Terminal descriptions Please refer to page 3 for terminals Terminal Symbol Descriptions 1 Vcc ...

Страница 6: ...0 Sv x O V V0 Output at angular velocity is 0 deg s Sv Scale factor mV deg s O Angular velocity angular velocity range 80 80 deg s 3 Use a sensor output load resistance of 100k ohm or more 4 Typical circuit Note1 The value of this resistance should be 1 1000 or less of impedance of A D converter Gyrostar ENV 05F GND Vout Vcc 100k ohm 1k ohm Note1 0 047µF 0 1µF A D converter Impedance Z 1M ohm 5V w...

Страница 7: ...Incorrect handling may affect sensor characteristics Please note the following precautions A Do not subject the sensor to shocks that exceed the rated limit B Do not subject the sensor to a magnetic field exceeding 5000µT 50 G C Do not install or store the sensor in a location in which condensation is likely to form on it D Do not install or store the sensor in a location in which water may splash...

Страница 8: ... use A D converter of 12 bits or more Resolution of A D converter will affect measurement accuracy Please choose a proper resolution according to the application 4 The sampling frequency used for measurement should be 50 times sec Min Sampling frequency will affect measurement accuracy Please choose a proper sampling frequency according to the application 5 It is possible to derive relative angle ...

Страница 9: ...ems is shown in below program flow chart Correcting location and direction Start Measuring speed Averaging gyro output for 1 second Motion of car Calculating location Renewing offset End End Sampling No Yes Yes No Stopping Moving Measuring Gyro output 1 second passage www DataSheet4U com ...

Страница 10: ...t 7 Data processing equipment 8 Applications of similar complexity or with reliability requirements comparable to the applications listed in the above 2 Product specifications in this manual are as of 4 April 2000 and are subject to change or stop the supply without notice Please confirm the specification before ordering any product If there are any questions please contact our sales representativ...

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