Tilt angle sensor is a type of attitude sensor mainly used for horizontal detection of object status, and also has the ability to measure the size of angles.
Tilt angle sensors are basically divided into two types.
A type of sensor can be called a static inclination sensor, whose basic principle is Newton's second law. This type of sensor is mostly used for monitoring static or quasi-static objects and has become an indispensable measurement tool in industries such as dams, bridges, buildings, and high-altitude work platform vehicles for angle detection.
Another type is dynamic tilt angle sensors, which use the latest inertial navigation technology to avoid the problem of accuracy loss during motion and vibration. They can be applied to motion carriers such as drones, smart agriculture, engineering machinery, robots, etc., to measure the posture of the carrier with high precision during motion.
So when choosing a sensor, it is necessary to choose a suitable tilt sensor based on one's own needs.
Basic parameters of tilt angle sensor
1. Range
Range refers to the maximum range that a sensor can measure, which is the difference between the upper and lower limits of the measurement. Each sensor has its own measurement range, and the output signal of the sensor is only accurate when it is measured within this range. Acceleration sensors with a range of less than 1G are used as tilt sensors, while sensors with a range exceeding 1G are used as acceleration sensors or vibration sensors. Because the larger the range, the lower the accuracy. The dual axis tilt sensor can select the range within ± 90 °, while the single axis tilt sensor can select 360 ° in the vertical direction.
2. Accuracy
During the testing and measurement process, measurement errors are inevitable. There are mainly two types of errors: systematic error and random error. The causes of system errors, such as inherent errors in measurement principles and algorithms, inaccurate calibration, environmental temperature effects, material defects, etc., can be reflected by accuracy to assess the degree of impact of system errors. The causes of random errors include clearance between transmission components, aging of electronic components, etc. Precision can be used to reflect the degree of influence of random errors. Precision is a comprehensive indicator that reflects both systematic and random errors, with higher precision indicating higher accuracy and precision.
3. Zero offset
Zero drift refers to the slight variation in the output value of a sensor even when its input remains constant at zero. There are many reasons that can cause zero drift, such as changes in the characteristics of sensitive components in sensors over time, stress release, component aging, charge leakage, environmental temperature changes, etc. Among them, zero drift caused by changes in environmental temperature is the most common phenomenon.
4. Input frequency
The frequency response characteristics determine the frequency range being measured, and it is necessary to allow measurement conditions that do not distort within the frequency range. In fact, the response of the sensor will always have a certain delay. The higher the frequency response of the sensor, the wider the frequency range of the measurable signal, and the greater the interference. The lower the frequency response of the sensor, the narrower the frequency range of the measurable signal, and the lower the interference. In practical applications, a large number of measured signals are time-varying, such as changes in current values, object displacement, acceleration, and so on. This requires the output of the sensor not only to accurately reflect the size of the measured object, but also to keep up with the speed of the measured changes. Within the frequency response range of the sensor, the amplitude of its output varies slightly within a certain range (with a maximum attenuation of 0.707). Therefore, when the input value changes sinusoidally, it is generally believed that the output value can accurately reflect the input value. However, when the frequency of input value changes is higher, the output value will experience significant attenuation, resulting in significant measurement distortion.
5. Interface
Multiple interfaces including RS232, RS485, TTL, and CAN bus are available for selection.
The AIS2000 ultra high precision dual axis tilt sensor independently developed by Huilian Technology provides customers with different measurement ranges to choose from. AIS2000 is an ultra high precision tilt sensor developed by Huilian Technology, with a resolution of 0.0005 °, a maximum accuracy of 0.002 °, a range of ± 5, ± 15, ± 30, ± 90, and a temperature drift of 0.0007 °/℃. It is currently the most competitive product in the industry. The product has multiple interfaces for RS232, RS485, TTL, and CAN bus output, which can be easily integrated into the user's usage environment. The product operates with a wide voltage range, with optional measurement range and output rate, making it very flexible and convenient.
