The importance of flying "sensors" Smart Sensor air pressure sensors in UAV product applications
Release time:
2022-04-23
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In recent years, the rapid improvement and improvement of the level of science and technology related to sensing and remote sensing, computational vision, image transmission and other related science and technology have helped the UAV industry to enter the fast lane of development. Especially in recent years, some industries have been affected by the epidemic, but drones have risen against the trend because of contactless distribution and intelligent applications, maintaining a rapid growth of 30%, and drone products are widely used in meteorological monitoring, land and resources law enforcement, environmental protection, remote sensing aerial photography, earthquake relief, express delivery and other fields.
Flying "sensors" - drones
Drone sensors
In order to better control the flight of drones and play a greater role in people's production and life, the use of various sensors is very important, and some people will even call drones a "sensor" that can fly. In the flight controller, the core "brain" of the drone, the internal sensors (IMU) mainly include accelerometers, gyroscopes, magnetic compasses and barometric pressure sensors. Among them, the accelerometer is used to provide the acceleration force of the UAV in the XYZ three-axis direction, the gyroscope sensor can monitor the angular velocity of the three axes, and then can monitor the rate of change of the angle when pitching, rolling and yaw, the magnetic compass can provide a sense of direction for the UAV, and the barometric pressure sensor can use atmospheric pressure to convert the altitude, and assist the UAV navigation through the collected data, accurately estimate the ascent and descent speed, etc. It is especially important for drone flight control.
The working principle of the barometric pressure sensor is to use the barometric pressure sensor as the altitude measurement device and the digital signal processor as the microcontroller unit to design a miniature altitude measurement system for the UAV. The median average filtering method is used to process the raw data of the barometer to obtain high-precision altitude measurements. Altitude measurement is one of the core tasks of UAVs, which is responsible for the flight altitude control of UAV flight control systems, and is the foundation and key to realizing the wide application of UAVs. Due to the light load of the UAV, strict data parameter requirements are put forward in many aspects such as the volume, power consumption, response time, measurement accuracy, and stability of the barometric pressure sensor.
Smart Sensor ZXP0 capacitive atmospheric pressure sensor
As a leading MEMS pressure sensor company in China, Beijing Smart Sensor Technology Co., Ltd. (hereinafter referred to as "Smart Sensor") has successfully developed a new generation of digital barometric pressure sensors suitable for UAV altitude measurement - ZXP0 series products by virtue of its advantages in hard-core technology, talent team, field resources and other aspects, and all parameters are better than the requirements of industry standards. ZXP0 capacitive barometric pressure sensor is a miniaturized digital pressure sensor with high precision and low power consumption, which has both pressure and temperature measurement functions. The internal signal processor converts the output of the pressure and temperature sensor elements into 24 bits of data, and each pressure sensor is individually calibrated and contains calibration coefficients. Coefficients can be used in applications to convert measurements into real pressure and temperature values, and sensor measurements and calibration coefficients are available via a serial I²C interface.
Smart Sensor's new generation of ZXP0 series barometric pressure sensor
Smart Sensor's new generation of ZXP0 series barometric pressure sensor has the advantages of ultra-high accuracy of ±10cm and low power consumption, which is very suitable for accurate measurement of altitude and airflow. At the same time, capacitive barometric pressure sensing technology is used to ensure high-precision measurement even when the temperature changes. The average power consumption of the sensor is only 2 μA for barometric pressure measurement at a sample rate of 1 Hz, and even drops to 0.5 μA in standby mode. In terms of operating temperature and air pressure, the ZXP0 series sensors also perform well, operating at air pressures from 300 to 1200 hPa and temperatures from -40°C to +85°C with a temperature accuracy of ±0.5°C. With the excellent performance of data parameters, the ZXP0 series barometric pressure sensor will become an ideal choice for UAV barometric pressure sensors.
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In the face of strong market demand, the annual output value of the domestic UAV industry is expected to exceed 100 billion yuan, opportunities and challenges coexist, UAV products can only maintain the competitiveness of core products by continuously realizing intelligent upgrading. Through the company's leading ZXP0 series barometric pressure sensors, Smart Sensor will provide technical support for drone products, help drones better penetrate into people's lives, security, transportation, construction, agriculture and other fields, and contribute to the arrival of the era of drones.
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Beijing Zhixin Sensor Technology Co., Ltd.
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