The drone is simply referred to as "unmanned aerial vehicle" and is an unmanned aircraft that is operated by radio remote control equipment and a self-contained program control device. There is no cockpit on the aircraft, but equipment such as autopilot and program control devices are installed. The personnel on the ground, ships, or remote control stations of the parent aircraft track, locate, remotely control, remotely measure, and digitally transmit data through radar and other equipment.
Only a wireless manual controller is required to operate the aircraft. Plane or PC terminal for the aircraft to set the route, the system can accurately complete the automatic take-off, landing, flight routes, around the point of flying and many other professional aerial photography tasks. Its high-definition camera mounted on the head can be rotated 360 degrees, zoomed in and zoomed in, shot for 20 minutes in a row, and instantly transmitted the image back to the ground monitor. The latitude, longitude, altitude, heading, attitude, etc. Data is very important, and we need to be able to save it completely and reliably for later data processing and analysis. The portable large-capacity data memory LCA3211 series adopts a high-performance 32-bit industrial-grade ARM microprocessor as the system core, embeds the FAT32 file system, combines large-capacity memory cards and USB data copy functions to achieve high performance, low power consumption, and low cost. The small volume of large-capacity data storage and copying has unparalleled advantages.
In this system, high-performance 32-bit industrial ARM microprocessors and large-capacity memory cards are the cores of the system. In order to achieve high reliability and high efficiency of the system, high-performance 32-bit embedded microprocessors based on the ARM architecture must be used. As the management core of the system, through the combination of an efficient embedded operating system and a unique dynamic memory allocation algorithm, the memory consumption and release of the file system are managed, the data transmission efficiency is improved, data loss is avoided, and real-time data is realized. Reliable storage.
In practical applications, drones are powered by batteries and are available for aircraft flight time (depending on the load carrying capacity). The LCA3211 data memory uses a modular design, which greatly reduces the weight.
At the same time, a large number of tilt sensors are installed on drones for real-time detection and monitoring of the aircraft's flight attitude. High-precision tilt sensors are high-precision and high-stability series, and are widely used in aircraft attitude calibration, sailboat attitude control, and other fields. . Under normal circumstances, we will use radio waves to transmit to the ground control center. However, in actual use, due to the mutual interference of radio waves and the development of technology, the demand for the amount of data transmitted is increasing. Conventional radio waves are In the process of transmitting large amounts of data, the impact of packet delay or loss, data corruption, data duplication and out-of-order causes data transmissions to cause significant losses, and thus imposes higher requirements on data wireless transmission. The requirement not only enables real-time wireless transmission of data, but also records and maintains the original data as a "black box" to prepare for back-end processing. If you do not need to process and display data in real time, just record the original data and replace the radio wave transmission with the low-power LCA3211 data memory, which can provide longer life for the drone.
Applications:
The Grounding Transformer is a kind of auxiliary transformer that used to offer an earth point for the Delta-Star system. They are typically used for providing a path to ground for unbalanced load current and for fault currents on system where a suitable ground is otherwise not available.
Design:
The grounding transformers are generally designed with one of the two configurations: Zig-Zag (Zn) with or without an auxiliary winding or a Wye (Ynd) with a delta connected secondary. The Zig-Zag connection is preferred as it is more cost effective and have smaller size than the Delta-Wye unit. For more safety, neutral earthing resistors (NER) are often used in conjunction with the grounding transformer to limit neutral ground fault current magnitude. The rated voltage of the NER should be equal to the line to ground voltage of the grounding transformer. The current rating and duration should match the grounding transformer
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Grounding Transformer
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