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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(xiàn)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(tài)，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(yīng)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(xiàn)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(yīng)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(zhì)。
美國Dytran的3143D是一款三軸IEPE加速度傳感器/振動傳感器，壓電式工作原理，重量14g，自帶4針徑向連接器和6-32鉸軸安裝設(shè)計，同時集成3個陶瓷剪切模式感應(yīng)元件，再配備鈦合金外殼，應(yīng)對超高濕度和多塵工作環(huán)境。
The Dytran 3143D is a miniature IEPE triaxial accelerometer with a vertical dimension of 0.34 inches (8.7 millimeters) and an overall weight of 14 grams. Available with a sensitivity of 10 mV/g, the Dytran model 3143D features three ceramic shear mode sensing elements packaged in a lightweight titanium housing.
Units utilize an industry standard radial 4-pin connector and thru hole 6-32 mounting screw. This ring style configuration allows the sensor to be turned 360° prior to securing for ease of installation. The Dytran model 3143D is hermetically sealed for reliable operation in high humidity and dirty environments, as well as case isolated to avoid EMI/ground loop interference.
特性
1. 10 mV/g sensitivity
2. 500g range
3. 0.5 to 3,000 Hz frequency range (±5%)
4. 4-pin 1/4-28 radial connector
5. Thru hole mount
6. 14 grams
7. Titanium
8. Hermetic
9. Case isolated
10. 360° cable orientation
11. Low profile
12. Triaxial
13. IEPE
應(yīng)用
1. Modal and structural analysis
模態(tài)和結(jié)構(gòu)分析
2. Whole body vibration measurements
全身振動測量
3. General purpose triaxial vibration measurements
一般目的三軸振動測量
Weight, Max. 0.49 oz 14 grams
Connector [1] Type 4-Pin 4-Pin
Material, Housing/Connector Titanium Titanium
Sensing Element Ceramic Ceramic
Element Style Planar Shear Planar Shear
Sensitivity, ±5% [2] 10 mV/g 1 mV/m/s2
Range for ± 5 Volts Output ±500 g peak ±4905 m/s2
Frequency Response, ±5% 0.5 to 3000 Hz 0.5 to 3000 Hz
Resonant Frequency > 25 kHz > 25 kHz
Broad Bａnd Resolution 0.007 g rms 0.07 m/s2 rms
Linearity [3] ± 1 % F.S. ± 1 % F.S.
Maximum Transverse sensitivity 5 % 5 %
Strain Sensitivity @ 250µε 0.012 g/με 0.12 m/s2
/µε
ENVIRONMENTAL
Maximum Vibration ±600 g peak ±5886 m/s2 peak
Maximum Shock ±1500 g peak ±14715 m/s2 peak
Operating Temperature Range -60 to 185 °F -51 to 85 °C
Survival Temperature Range -100 to 225 °F -73 to 107 °C
Seal Hermetic Hermetic
ELECTRICAL
Supply Current Range [4] 2 to 20 mA 2 to 20 mA
Compliance Voltage Range +18 to +30 Volts +18 to +30 Volts
Output Impedence,Typ 100 Ω 100 Ω
Bias Voltage +11 to +13 VDC +11 to +13 VDC
Discharge Time Constant 0.8 to 2.0 Sec 0.8 to 2.0 Sec
Electrical Isolation 10 GΩ,min 10 GΩ,min
配件
Supplied Accessories: (1) model 6247A2 mounting screw (6-32)
Recommended Accessories: model 4114B1 current source power unit, model 6216 adhesive mounting base
Compatible Cables: 6811A, 6812A, 6824A, 6828A, 6873A, 6925A, 6933A, 6967A, 6997A
訂貨型號
Model Sensitivity (mV/g) Frequency Response (Hz) Time Constant (Sec) Operating Temp (°F)
3143D
3143D1 100 mV/g 0.5 to 3000 0.8 to 2.0 -60 to 185
3143D2 50 mV/g 0.5 to 3000 0.8 to 2.0 -60 to 185
3143DT TEDS
3143D1T TEDS
相關(guān)型號
3143M16 低溫型
3