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Smart Sensor For Shock And Vibration Detection

EFY Tested Project

A standalone shock and vibration detection sensor device detects abnormal vibrations or shocks. Compact and versatile, it can be deployed in any environment requiring such monitoring. Fig. 1 displays various types of vibration sensors.

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Vibration sensors
Fig. 1: Vibration sensors
Parts List (excluding expansion circuit)
Semiconductors:
T1 – 2N2222 NPN transistor
LED1 – 5mm yellow LED
Resistors (all 1/4-watt, ±5% carbon):
R1 – 330-ohm
R2 – 3.3-kilo-ohm
Capacitors:
C1 – 10μF, 16V electrolytic
C2 – 4.7μF, 16V electrolytic
Miscellaneous:
Batt.1 – CR2032 3V coin cell
SEN1 – SW18015P vibration sensor switch (or equivalent)

Circuit and Working

Fig. 2 displays the circuit diagram of the standalone shock and vibration sensor device. It is built around transistor 2N2222 (T1), two electrolytic capacitors: one of 10μF, 16V rating (C1) and the other of 4.7μF, 16V rating (C2), two resistors: one of 330 ohm (R1) and the other of 3.3-kilo-ohm (R2), a yellow LED, and a few other components.

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T.K. Hareendran, Electronic Design Freelancer, AspenCore
T.K. Hareendran, Electronic Design Freelancer, AspenCore
T. K. Hareendran is a veteran electronics expert, educator, and technology writer with over 30 years of hands-on experience in the field of electronics and embedded systems. His journey began with a deep curiosity about how technology works, which evolved into a lifelong passion for understanding and building electronic systems. Over the decades, Hareendran has witnessed and actively engaged with the evolution of electronics—from early circuit designs and discrete components to modern microcontrollers, embedded platforms, and advanced digital systems. His expertise spans circuit design, hardware development, and practical electronics, backed by extensive real-world experience. Known for his ability to simplify complex concepts, he has dedicated many years to knowledge sharing, helping students, hobbyists, and professionals navigate the intricacies of electronics. His writing focuses on making technical subjects accessible, combining clarity with practical insights that readers can apply in real-world scenarios. Hareendran continues to contribute to the electronics community through educational content and hands-on guidance, driven by a strong belief in the power of curiosity, continuous learning, and shared knowledge.