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SS49E 데이터시트(PDF) 2 Page - Honeywell Accelerometers |
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SS49E 데이터시트(HTML) 2 Page - Honeywell Accelerometers |
2 / 3 page SS39ET/SS49E/SS59ET Series Linear Position Sensor ICs 2 Honeywell Sensing and Control Building Security A secure electronic lock can be designed using an array of linear magnetic sensors configured to detect a specific magnetic pattern. If a strong external magnet were brought in proximity to the array, it would be read as a random attempt and could trigger an alarm. The array of linear Hall-effect sensors could be used to unlock the system only if the magnetic field read by each sensor is of the correct polarity and within acceptable amplitude limits. Figure 3. Electronic Locks Without reproducing the exact magnetic flux pattern, it would be virtually impossible to unlock the system with a single, or even multiple, strong magnets. Tiny Honeywell SS39ET Surface-Mount Linear Hall-effect Sensor ICs would provide the needed sensitivity, output and very small size. Customer Benefits Small: Subminiature sensors easily fit into tight spaces Flexible: Surface-mounting allows for a low-profile array on a PC board Energy efficient: Low voltage capability down to 2.7 V High volume use: Low cost and taping option for automatic component placement make this product suitable for high- volume production Water Pump Control A water pump is essentially a special application of an electric motor. These pumps are commonly manufactured for home appliances. Figure 4. Washing Machine A linear Hall-effect sensor generates an enhanced control signal for better resolution of the rotor position, which can improve the motor's efficiency. A crude RPM measurement would verify that the pump is working properly. The output of the sensor may be used as an alarm or a shut-off signal to help prevent motor overload. Figure 5. Aquarium Pump A pump may use one or more valves, engage a clutch or gear to begin, or move a lever or piston a specified distance. The linear Hall-effect sensor IC can be used to verify that the valve, clutch, lever or piston is in the specified position. |
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