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Angular Velocity Sensor
MODEL: ENV-05F-03
User' s Manual
Version1.0
www.DataSheet4U.com
Please read this manual before operating the unit
Published: 4.April.2000
© ETEK NAVIGATION, INC.
ETEK NAVIGATION, INC.
TEL: 886-2-26860199
FAX: 886-2-26866159
10F., No.105, Xicheng Rd., Banqiao City,
Taipei County 220, Taiwan (R.O.C.)
E-Mail:
etek@etek.com.tw
http://www.etek.com.
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Summary of Contents for ETEK ENV-05F-03
- Page 1 MODEL: ENV-05F-03 User’ s Manual Version1.0 www.DataSheet4U.com Please read this manual before operating the unit Published: 4.April.2000 © ETEK NAVIGATION, INC. ETEK NAVIGATION, INC. TEL: 886-2-26860199 FAX: 886-2-26866159 10F., No.105, Xicheng Rd., Banqiao City, Taipei County 220, Taiwan (R.O.C.) E-Mail: etek@etek.com.tw...
- Page 2 Introduction This angular velocity sensor employs the principle that a Coriolis force results if an angular velocity is applied to a vibrating object. Murata's unique ceramic bimorph vibrating unit is used as the sensor element unit, thereby enabling piezoelectric ceramics to be used for both excitation and detection. The use of this unit simplifies equipment structure and circuit configuration, thus making it possible to provide outstanding performance.
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Page 3: Specifications
3. Specifications Type ENV-05F-03 Characteristic Condition MIN. STD. MAX. Unit Symbol Supply voltage +4.5 +5.0 +5.5 Current consumption at Vcc=5.0VDC -1/3 PI +1/3 PI rad/s Max. angular velocity Omax (-60) (+60) (deg/s) angular velocity = 0 Output 2.150 2.500 2.850 at -30~80°C... - Page 4 4. Dimensions Y Axis www.DataSheet4U.com 11.5 19.6 3-0.6 4-2.0 (t=0.35) 9.05 2.15 2.54 (t=0.3) 12.5 Unit : mm Tolerance : ±0.5 Terminals Description +Supply (input) Ground (common) Sensor Output (output) (1) (2) (3)
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Page 5: Installation
5. Installation 1) Install the sensor with the bottom face as reference. 2) Install the sensor vertically with respect to the rotating surface. (90 ± 5 deg) 3) Install the sensor in a location free from vibration. 4) Install the sensor in a place free from substantial variations in temperature. 5) When installing the sensor, solder four tabs and terminals on PCB (t=1.6mm). - Page 6 7. Connection 1) Operation voltage is +4.5V to +5.5V. Use stabilized power supply free from surge and ripple. Confirm power supply polarity before connecting sensor. 2) Output voltage is relative to the angular velocity. V0 + Sv x V0 :Output at angular velocity is 0 [deg/s] Sv :Scale factor [mV/deg/s] www.DataSheet4U.com ∼...
- Page 7 8. Notice 1) Bias and scale factor drift Surrounding temperature variation might affect sensor output (bias, scale factor). Sensor should be mounted where temperature does not vary significantly. When canceling bias drift, please refer to the following examples. - Cut DC level of output using HPF (Hi-Pass-Filter) with low cut-off frequency on sensor output. - If bias voltage can be detected just before measurement, replace former bias with it.
- Page 8 10. Application 1) When high-precision measurement is required, as in a navigation system, use the output of this sensor through an A/D converter as shown below. 2) Positive voltage (+) and negative voltage (-) are obtained in the clockwise and counter clockwise directions, respectively, with the static output as a reference.
- Page 9 11. Program flow chart for car navigation systems An example of car navigation systems is shown in below program flow chart. Start Correcting location and direction Measuring Gyro output www.DataSheet4U.com Sampling 1 second passage Measuring speed Averaging gyro output for 1 second Stopping Motion of car Moving...
- Page 10 Note 1) Please consult our sales representatives or engineers before using our products listed in this manual for applications requiring especially high reliability what defects might directly cause damage to other party’s life, body or property (listed below) or for other applications not specified in this manual.
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