Triaxial Acceleration Sensor

Introduction

There are many ways to realize the triaxial acceleration sensor, which can be mainly divided into three types: piezoelectric type, a capacitive type, and thermal induction type. These three technologies have their own advantages and disadvantages.

Take the technical principle of a capacitive three-axis accelerometer as an example:

Capacitive accelerometers can sense motion conditions such as acceleration or vibration in different directions. It is mainly a movable mechanism designed by using the mechanical properties of silicon. The mechanism mainly includes two groups of silicon combs, one is fixed, and the other is moved immediately. The former is equivalent to a fixed electrode, and the function of the latter is Movable electrodes. When the movable comb teeth are displaced, there will be a change in capacitance proportional to the displacement.

Working principle

Most triaxial acceleration sensor uses piezoresistive, piezoelectric, and capacitive working principles and the resulting acceleration is proportional to the changes in resistance, voltage, and capacitance, and is collected through corresponding amplification and filter circuits. This is based on the same principle as an ordinary accelerometer, so in a certain technology, a three single-axis can become a three-axis.

For most sensor applications, two-axis accelerometers are already sufficient for most applications. However, some applications are still concentrated in three-axis accelerometers such as data mining equipment, valuable asset monitoring, collision monitoring, measuring vibration of buildings, wind turbines, wind turbines, and other sensitive large-scale structural vibrations.

Types

According to the realization principle of the triaxial acceleration sensor, there are three main types of acceleration sensors: piezoresistive, piezoelectric, and capacitive.

Piezoresistive accelerometers are resistive, exhibit low impedance, and have the advantages of good frequency response characteristics, easy measurement methods, and good linearity, but their disadvantages are serious temperature effects and low sensitivity;

The piezoelectric accelerometer is capacitive and has high impedance and its advantages are frequency bandwidth, high sensitivity, high signal-to-noise ratio, simple structure, reliable operation, and lightweight. The disadvantage is that some piezoelectric materials need moisture-proof measures, and the output DC response is poor, which requires a high input impedance circuit or a charge amplifier to overcome this defect;

The advantages of capacitive sensors are simple structure, strong adaptability, good dynamic response, high resolution, good temperature stability, non-contact measurement, and averaging effect. The disadvantage is that the output impedance is high and the load capacity is poor.

Advantages

The advantage of the triaxial accelerometer is that only the three-dimensional acceleration sensor is used to detect the acceleration signal when the direction of movement of the object is not known in advance.

The triaxial accelerometer sensor has the characteristics of small size and lightweight, can measure acceleration in space, and can fully and accurately reflect the motion properties of the object.

Application

Three-axis acceleration sensor is based on the basic principle of acceleration to achieve work, has the characteristics of small size and lightweight, can measure the space acceleration, can comprehensively and accurately reflect the nature of the motion of the object, has been widely used in aerospace, robotics, automotive and medical fields.

Delivery

We will send the goods to you by DHL, FEDEX, UPS, EMS, AIR, etc. Usually 7-15 working days after receiving your 100% payment. For bulk orders: 15-35 working days after receiving the deposit.

Testing Equipment

Our microwave measurement capability makes us the best choice for the design and manufacturing of your components.

FAQ

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2. What about minimum order quantity?

We have no limit for MOQ, so you can even buy only 1 piece. Welcome to buy a sample to test first.

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