Description
The Sensolute micro vibration sensor is used for the detection of slight movements and vibrations by means of a mobile micro sphere. The ball bridges two contacts reducing the resistance between the two external connection pads from several mega ohms (> 30 MOhm) to below 100 Ohms. The sensor is fully passive, requires no signal conditioning, and operates with currents a low as 0.2 μA.
With the aid of tool-specific evaluation electronics, the micro vibration sensor controls the operation of movement-sensitive devices. The micro vibration sensor is utilised for converting many systems to environmentally friendly devices by implementing wake-up and powerdown logic to conserve battery power and bringing energy consumption to a minimum, pushing the availability of green technology and green electronics into new areas of design and application.
The sensor is typically used for applications such as bike computers, remote controls, electronic lock systems, RFiD transponders, GPS tracking systems, wireless sensor networks, illuminated dog`s collars, access control systems, data loggers, bicycle lights, that are only switched on when in motion.
Material Description
The micro vibration sensor is used for the detection of slight movements and vibrations by means of a mobile micro sphere. The ball bridges two contacts reducing the resistance between the two external connection pads from several mega ohms (> 30 MOhm) to below 100 Ohms. The sensor is fully passive, requires no signal conditioning, and operates with currents a low as 0.2 A.
With the aid of tool-specific evaluation electronics, the micro vibration sensor controls the operation of movement-sensitive devices. The micro vibration sensor is utilised for converting many systems to environmentally friendly devices by implementing wake-up and power-down logic to conserve battery power and bringing energy consumption to a minimum, pushing the availability of green technology and green electronics into new areas of design and application.
The sensor is typically used for applications such as bike computers, remote controls, electronic lock systems, RFiD transponders, GPS tracking systems, wireless sensor networks, illuminated dog`s collars, access control systems, data loggers, bicycle lights, that are only switched on when in motion.
Operating Conditions
| PARAMETER | SYMBOL | MIN | MAX | UNIT |
|---|---|---|---|---|
| Supply voltage | VCC | +1.80 | +15 | Vdc |
| Current | ICC | 2 | mA | |
| R Open | RO | - | > 30 | MOhm |
| R Closed | RC | < 100 | - | Ohm |
| Operating ambient temperature | Tamb | -40 | +85 | °C |
Soldering Process
Reflow Soldering Process 260°C, 10 sec
Functionality
A mobile, gilded micro sphere is located inside the hollow space of the sensor. When moving, the micro sphere bridges two gilded contacts by switching over from a high resistive to a low resistive state. When the Sensor is at rest, it is not necessarily closed. Only in 70% -99% of time the sensor will be closed when at rest.
Test parameters
Number of test cycles: 300 High temperature TA: +85°C; Total time: 300h Low temperature TB: -40°C; Total time: 300h Duration of exposure: 1h Rate of change between these temperatures: 2.5°C/mi n Mechanical excitation of samples: 2 min/hour
Final measurement
No evidence of internal corrosion after the test. No shape distortion.
Non Operation Half Sine Shock
Test cycle: Acceleration 25g at 6msec pulse width 1000 cycles pos. 1000cycles neg.; 1Shock/s; 3 axis: X, Y, Z
Non Operational Vibration Test
Test cycle: Sinus 10 ... 300Hz; Elongation 0.25mm / 0.25g; 5 cycles; 1 axis Frequency area A: 10 – 22.28Hz, amplitude in A:0.25 mm Frequency area B: 22.28 -300Hz, acceleration in B: 0.25g Sweep speed: 1 Octave/min, Cycles: 10 Time per Sweep: 4.9 min
Non Operational Vibration Test
Test cycle: Sinus 10 ... 500Hz; Elongation 3.0mm / 1.5g; 5 cycles; 1 axis Frequency area A: 10 – 15.76Hz, Amplitude in A: 3.0mm Frequency area B: 15.76 -500Hz, Acceleration in B: 1.5 g Sweep speed: 1 Octave/min, Number of sweeps: 10 Time per Sweep: 5.62 min
