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加速度傳感器中有一種是三軸加速度傳感器，同樣的它是基于加速度的基本原理去實現工作的，加速度是個空間矢量，一方面，要準確了解物體的運動狀態，必須測得其三個坐標軸上的分量；另一方面，在預先不知道物體運動方向的場合下，只有應用三軸加速度傳感器來檢測加速度信號。由于三軸加速度傳感器也是基于重力原理的，因此用三軸加速度傳感器可以實現雙軸正負90度或雙軸0-360度的傾角，通過校正后期精度要高于雙軸加速度傳感器大于測量角度為60度的情況。三軸加速度傳感器的好處就是在預先不知道物體運動方向的場合下，只有應用三維加速度傳感器來檢測加速度信號。三維加速度傳感器具有體積小和重量輕特點，可以測量空間加速度，能夠全面準確反映物體的運動性質。
美國Dytran的3003B是一款高性能微型三軸加速度傳感器/振動傳感器，壓電式工作原理，自帶放大器功能（IEPE）,可在高達175攝氏度工作環境下正常運行，轉為井下鉆頭振動監測應用而設計。
The Dytran 3003B is a high performance triaxial IEPE accelerometer capable of operating at temperatures up to +347°F (+175°C) and was designed for down-hole drill head vibration monitoring.
Sensors developed for down-hole vibration monitoring must be able to deliver accurate and reliable data, while simultaneously tolerating harsh conditions. Critical characteristics of these sensors include a miniature design, high temperature operation, and the ability to operate at low power levels. The Dytran 3003B is ideal for such applications, as it is packaged in a miniature titanium housing with a vertical height of just 0.37-inches (9.4-millimeters), is capable of reliable operation at temperatures up to +347°F (+175°C), and was specially designed to operate from +4.0 to +5.5 VDC compliance voltage.
The Dytran model 3003B triaxial accelerometer is offered with a sensitivity of 2 mV/g and 500g range, and is designed with adhesive mounting capabilities. Weighing just 6 grams, units incorporate four permanently attached 22-inch long lead wires.
特性
1. 2 mV/g sensitivity
2. 500g range
3. 2 to 5,000 Hz frequency range (±10%)
4. 22-inch integral cable
5. Adhesive mount
6. 6 grams
7. Operates from +4.0 to +5.5 VDC
8. +347°F (+175°C) operation
9. Triaxial
10. IEPE
應用
1. Down-hole drill head vibration monitoring
井下鉆頭振動監測
2. Low turn-on voltage applications where power supply is limited
電源供電受限情況下的低開啟電壓應用
PHYSICAL
Weight 0.21 oz 6.0 grams Notes:
Connector, Type 4 Wire Integral Cable 4 Wire Integral Cable
Mounting Adhesive Mount Adhesive Mount
Material, Housing/Connector Titanium Alloy Titanium Alloy
Sensitivity, ±10% [1] 2.0 mV/g 0.20 mV/m/s2
Range, Full Scale (each axis) ±500 g ±4905 m/s2
Frequency Response, ± 3dB 2 to 5000 Hz 2 to 5000 Hz
Resonant Frequency >30 kHz >30 kHz
Equivalent Electrical Noise 0.007 grms 0.07 m/s2 rms
Linearity [2] ±1 % F.S. ±1 % F.S.
Maximum Transverse sensitivity 5 % 5%
Full Scale Voltage Output ±1 Volts ±1 Volts
Maximum Vibration ±600 gpeak ±5886 m/s2 peak
Maximum Shock ±5000 gpeak ±49050 m/s2 peak
Temperature Range -40 to +347 °F -40 to +175 °C
Base Strain Sensitivity @ 250µ? < 0.014 g/µε < 0.14 m/s2/µε
Supply Current (each axis) [4] 4.0 mA 4.0 mA
Compliance Voltage, Nom (each axis) +4.5 Volts +4.5 Volts
Output Impedance, Typ. 100 ? 100 ?
Bias Voltage +1.7 to +3.4 VDC +1.7 to +3.4 VDC
Discharge Time Constant 0.25 to 0.75 Sec 0.25 to 0.75 Sec
Ground Isolation [5] [5]
訂貨型號
Dytran 3003B 三向力加速度傳感器
相關型號
3133A1
3313A1
3343A
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