There is a type of accelerometer called three-axis accelerometer, which works based on the basic principle of acceleration. Acceleration is a spatial vector. On the one hand, to accurately understand the motion state of an object, it is necessary to measure the components on its three coordinate axes; On the other hand, in situations where the direction of object motion is not known in advance, only three-axis acceleration sensors can be used to detect acceleration signals. Due to the fact that three-axis acceleration sensors are also based on the principle of gravity, using three-axis acceleration sensors can achieve dual axis positive and negative angles of 90 degrees or dual axis angles of 0-360 degrees. Through calibration, the accuracy in the later stage is higher than that of dual axis acceleration sensors when the measurement angle is greater than 60 degrees.
The current three-axishigh sensitivityMost acceleration sensors use piezoresistive, piezoelectric, and capacitive working principles, and the acceleration generated is proportional to the changes in resistance, voltage, and capacitance, which are collected through corresponding amplification and filtering circuits. This is based on the same principle as ordinary acceleration sensors, so with certain technology, three single axes can be turned into one three-axis. For most sensor applications, a two axis accelerometer is already sufficient for most applications. However, some applications are still focused on three-axis acceleration sensors, such as in data acquisition equipment, valuable asset monitoring, collision monitoring, measuring building vibration, wind turbines, wind turbines, and other sensitive large structural vibrations.
triaxialhigh sensitivityThe advantage of an acceleration sensor is that in situations where the direction of object motion is not known in advance, only a three-dimensional acceleration sensor can be used to detect the acceleration signal. Three dimensional acceleration sensors have the characteristics of small size and light weight, which can measure spatial acceleration and comprehensively and accurately reflect the motion properties of objects.
High sensitivity acceleration sensors have excellent stability, reliability, and resistance to dryness. Ordinary acceleration sensors usually need to be calibrated on a standard vibration table, which brings inconvenience to use.High sensitivity accelerometer sensorBy adopting advanced microelectronic processing technology and capacitive measurement principle, excellent low-frequency response can be obtained. The sensor can be standardized by gravity acceleration g and has a built-in self-test system.
1. Equipment vibration measurement: High sensitivity series integrated acceleration sensors are widely used for monitoring the operating status of equipment in various industries. The vibration level during equipment operation is an important indicator for estimating whether the equipment is running normally. This sensor can measure vibration from DC to 2kHz, and the output signal is filtered and detected to provide accurate and intuitive indications of the vibration magnitude of the equipment.
2. Impact measurement: widely used in automotive airbags and seat belt systems. When a collision occurs, the sensor is impacted and can output a pulse signal with an amplitude proportional to the impact acceleration within 1 ms. When the impact acceleration reaches a certain value, this signal will cause the airbag to deploy or lock the seatbelt to protect the passenger's life.
3. Tilt angle measurement: When the sensor is placed at an angle, the output of the sensor is the component of the gravitational acceleration on the measurement axis of the sensor, that is, the output has a function relationship with the arcchord of the tilt angle. When the tilt angle is small, it is approximatelyLinear relationship.
high sensitivityThe series integrated acceleration sensor measures acceleration based on the principle of capacitive measurement, and its output electrical signal is proportional to the measured acceleration. The principle block diagram of the high-sensitivity series integrated acceleration sensor is as follows:

Secure the sensor to the device under test using bolts.
Dimension diagram of sensor housing

Dimension diagram of sensor base
