Introduction
Sw-420 is a non-directional vibration sensor that can be used at any angle. When a force applies, it brought to bear a vibration or a suitable velocity. It transferred the conductivity of the terminals to ON-State. The module comes with a comparator LM393 and a potentiometer to adjust, so when the vibration is below the set value of the sensor, the sensor output is in a high state, and
Hardware Overview
LM393 IC
They have used lM393 Comparator IC as a voltage comparator in this vibration sensor module. It connects IC’s pin 2 of LM393 to the potentiometer while connecting pin 3 to the vibration sensor. The comparator IC compares the set threshold voltage using the preset pin2 and the Vibration Sensor pin 3.
Trimmer pot
There is an onboard potentiometer, one can adjust the threshold sensitivity of the digital output using this trimmer pot.
Vibration Sensor
They made the sensor up of a small mechanism, which makes contact when the vibration exceeds a certain threshold. The value is set by the potentiometer.
Features and Specification
Features
- Normally closed type vibration sensor SW-420
- The comparator output
- Clean signal
- Good waveform,
- Driving ability is powerful
- Has a fixed bolt hole
- Convenient installation
- Use the LM393 wide voltage comparator
Specifications
- Operating Voltage: 3.3 Volts – 5.0 Volts DC
- Current driving Capability: 15 mA
- Vibration Sensor module dimensions: 3.2cm x 1.4cm
- The vibration sensor is a close-type switch by default.
Pinouts
| Pin Name | Description |
| VCC | The VCC pin powers the module, typically with +5V |
| GND | Power Supply Ground |
| DO | Digital Out Pin for Digital Output |
Applications of Vibration Sensor
Gas Turbines
We commonly consider vibration measurements to be a sound indicator of a machine’s monitoring in gas turbines. The principle behind using vibration data is that when there is any fault, the system dynamics get changed. Hence the system uses vibration sensors.
Alarm and Security System
When any vibration sound occurs, these systems help to warn by beeping the buzzers connected. Thus, these systems use vibration sensors to detect the vibration or motion.
Shock Detection
This system helps to provide early warnings of landslides shocks. uses a vibration sensor with a microcontroller. thus, it read data from the vibration sensor and then transmits that information through a Wi-Fi module. The system transmits data through the WIFI network to the server automatically when there is an exceeding of the threshold value
