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YD39 tri-axial high sensitivity acceleration sensor

YD39 tri-axial high sensitivity acceleration sensor

High-sensitivity uniaxial acceleration sensor is an acceleration-sensitive element processed by micromachining on a piece of polysilicon. It is composed of conversion, measurement and amplification circuits and belongs to integrated sensor.

One kind of acceleration sensor is three-axis acceleration sensor. Similarly, it works based on the basic principle of acceleration. Acceleration is a space vector. On the other hand, when the direction of motion of the object is not known in advance, only the triaxial acceleration sensor is applied to detect the acceleration signal. Since the three-axis acceleration sensor is also based on the principle of gravity, the three-axis acceleration sensor can be used to realize the dip Angle of the two-axis plus or minus 90 degrees or the two-axis 0-360 degrees, and the correction accuracy is higher than that of the two-axis acceleration sensor in the later period than that of the measurement Angle of 60 degrees.

The advantage of triaxial high-sensitivity acceleration sensor is that only 3d acceleration sensor can be used to detect acceleration signal when the direction of object motion is not known in advance. The 3d acceleration sensor has the characteristics of small volume and light weight, which can measure the spatial acceleration and reflect the motion property of the object comprehensively and accurately.

High sensitivity acceleration sensor has excellent stability, reliability and dry resistance. Ordinary acceleration sensor usually needs to be calibrated on standard vibration table, which brings inconvenience to use. The high-sensitivity acceleration sensor adopts advanced microelectronic processing technology and capacitive measurement principle, which can obtain excellent low-frequency response. The sensor can be standardized by gravity acceleration g, and the self-check system is built in.


Range of application


1. Equipment vibration measurement: high-sensitivity series of integrated acceleration sensors are widely used in equipment operation status monitoring of various industries. The vibration quantity of equipment is an important index to measure whether the equipment runs normally or not. The sensor can measure the vibration quantity from dc to 2kHz, and the output signal is filtered and detected to give an accurate and intuitive indication of the vibration size of the equipment.

2. Impact measurement: widely used in automobile airbags and safety belt systems. In the event of a crash, the sensor is impacted and can output a pulse signal whose amplitude is proportional to the impact acceleration within 1 ms. When the impact acceleration reaches a certain value, the signal will make the airbag explode or fasten the safety belt, so as to protect the lives of the passengers.

3. Inclination Angle measurement: when the sensor is tilted, the output of the sensor is the component of gravity acceleration on the measuring axis of the sensor, that is, there is a functional relationship between the output and the inclination Angle. When the inclination Angle is small, it is approximately linear.


technical parameters:

1.Measuring range (peak):±10g

2.Axial sensitivity:500mv/g (160hz)  ±5% (25℃)

3.Frequency response:0.5-5000 Hz (plus or minus 1 db)

4.Installation resonant frequency:≥15,000Hz

5.linearity:3% or less

6.Excitation voltage:18vdc-28vdc (constant current source)

7.Constant current source excitation (mA):2-10 ma

8.Output impedance:< 100 Ω

9.Full range output (peak):+ 5 v

10.noise:<50μV

11.The bias voltage:+ 9 - + 12 v

12.Temperature drift:≤0.01% / ℃(-20 ~ +125℃)

13. withstand maximum impact:10000 g

14:Working temperature:- 20 ~ + 120 ℃

15.Protection grade:IP65

16.shell material:Stainless steel

Fasten the sensor to the device under test with bolts.

Sensor housing dimension diagram:

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Sensor base size drawing:

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