Maxon MM-6854 Manual de usuario descargar pdf (Pagina 12)

Hardware og software

Analog Devices ADXL202 Acceleration sensor

The ADXL202 is a low cost, low power, complete 2-axis accelerometer with a

measurement range of ±2 g. The ADXL202 can measure both dynamic accelera-

tion (e.g., vibration) and static acceleration (e.g., gravity).

The outputs are Duty Cycle Modulated (DCM) signals whose duty cycles (ratio of

pulsewidth to period) are proportional to the acceleration in each of the 2 sensitive

axes. These outputs may be measured directly with a microprocessor counter, re-

quiring no A/D converter or glue logic. The DCM period is adjustable from 0.5 ms

to 10 ms via a single resistor (R

SET

). If an analog output is desired, an analog output

proportional to acceleration is available from the X

FILT

and Y

FILT

pins, or may be

reconstructed by filtering the duty cycle outputs.

ADXL202 Product Description

Dual Axis, ±2g, Low Power, Low Voltage, Digital Output

Accelerometer

•

IC Tilt sensor outperforms existing devices on every pa-

rameter including cost

Product Information

2 Axis of Acceleration Sensing on a Single IC Chip

5 milli-g Resolution

Duty Cycle Output with 1ms Acquisition Time

Low power > 0.5mA (ADXL202)

BW Adjustment with a Single Capacitor

+2.7V to +5.25V Single Supply Operation

1000g Shock Survival

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Maxon MM-6854 Manual de usuario Pagina 12