Summary of Contents for Murata GYROSTAR ENV-05F-03
- Page 1 OPERATION MANUAL ® GYROSTAR Piezoelectric vibrating Gyroscope MODEL : ENV-05F-03 Support sensor for car navigation systems 4.April.2000 PRODUCT ENGINEERING SECTION SENSOR MODULE DEPERTMENT CIRCUIT MODULE PRODUCTS DIVISION MURATA MFG. CO., LTD.
- Page 2 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.
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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 -2/3 PI +2/3 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 at -10~60°C 23.0... - Page 4 4. Dimensions Y Axis 11.5 19.6 3-0.6 4-2.0 (t=0.35) 9.05 2.15 (t=0.3) 2.54 12.5 Unit : mm Tolerance : ±0.5 Terminals Description +Supply (input) Ground (common) Sensor Output (output) (1) (2) (3) No. APENVF01E...
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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] ∼...
- 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.
- 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 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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