Motion Sensor

• Material: Plastic
• Certification: CE
• Customized: Customized
• Trademark: SWR
• Origin: China
• Model NO.: TS2107
• HS Code: 9023009000
• Production Capacity: 50000 Pieces/Year

Product Description

Motion Sensor
Product No.: TS2107
Measuring range: 20cm~200cm
Resolution: 1mm
Accuracy: ±2%F.S

 

Introduction:
Motion Sensor is a sonar equipment generating ultrasonic wave. It receives signal via signal reflecting by objects to measure the time T that high frequency sound wave pulse comes from object to sensor. According to the sound speed in air V, calculate distance between object and sensor: d=V*T/2.
A narrow voltage pulse is provided by circuit of Motion Sensor to piezoelectric transducer. Piezoelectric crystal plate starts oscillating and transmit ultrasonic wave. The sensor starts counting time. When the transmitted ultrasonic wave gets reflected by object, it stimulates piezoelectric crystal plate oscillation and form voltage pulse in circuit. Sensor will take this as end time.
There is a constant time period t₀ which is cost by piezoelectric crystal plate oscillation. It only receives signal when the previous period is completed. Thus, the dead zone is formed d=V*t₀/2. The area in front of Motion Sensor within 20cm is the dead zone.
There is a threaded hole at side of Motion Sensor (M6). You can fix the sensor on proper device by using it.

Calibration:
Calibration is not required.



Usage:
Ultrasonic wave is transmitted from the probe of Motion Sensor which is placed at the front side of it. Motion Sensor waits for the reflected signal. Anything which is able to reflect sound wave can be considered as explore object.
Motion Sensor only senses the object which is placed nearest to it and able to reflect strong signal. The object placed further away from Motion Sensor provides weaker signal. It will slightly affect the distance measured.
Before experiment, check the reflect angle of reflecting surface. If it is not vertical to ultrasonic wave, it may get concealed. If it is mounted by clamp, find the optimum angle by testing in order to gain the optimum reflected signal. You can try to increase the area of object to enhance reflection.


Typical experiment:
Explore the simple harmonic motion
Forced vibration
Explore uniform linear motion and uniform accelerated motion


Experimental case:
Uniform accelerated motion

:

1. Experimental procedures:
2. Connect the apparatus as shown above.
3. Open the SWR iLab V8.0. Click 'new' to create new experimental template.
4. Click 'new page' to create new folder.
5. Click 'add line' to add 'Motion-Time' coordinate. Set proper experiment time and acquisition interval such as 1min, 100ms.
6. Place the cart on the track and 20cm from Motion Sensor.
7. Click 'Start' and release the cart.
8. Click 'stop' when the cart stops.
9. Observe and analyze the figure.
10. Clear up the apparatus.

VA Curve

Notes:
1. Be aware of the dead zone of Motion Sensor.
2. Keep the reflection surface of the object face to the sensor. The target surface should be big enough to ensure measuring accuracy.