Shenzhen Darui Bo Electronics Co., Ltd.
Central Lighting Technology Co., Ltd.
TEL: 13421364554
News
Professional development, design, customization, production

News

News
Products / Products
Published: 2017 - 07 - 15
Directional power meters are used to measure power and reflection under operational conditions. They are connected between source and load and measure the power flow in both directions. The power applied to the load and the reflection can thus be measured. Typical applications are in installation, maintenance and monitoring of amplifiers, transmitters, antennas and RF/microwave generators in industrial and medical fields.
Published: 2017 - 07 - 15
To support a wide range of test requirements, the GSS6300 can be remotely controlled via standard interfaces such as IEEE-488, USB or RS-232. In addition, Spirent SimCHAN software can be used to implement real-time user control of the GSS6300, making it an accurate laboratory GPS / SBAS, GLONASS and / or Galileo test equipment.
Published: 2017 - 07 - 15
Customers looking for a general purpose spectrum analyzer will appreciate the flexibility of the ESA spectrum analyzer that can be used for a wide range of applications from aerospace and defense to the manufacturing line. Browse the ESA Brochure.Customers who wish to take advantage of the ESA flexibility but who need a faster analyzer for the manufacturing line, or connectivity to LAN/USB in addition to GPIB, or want to do in depth signal analysis with 89600 VSA software will benefit from the new EXA signal analyzer. The EXA signal analyzer now comes standard with many of the ESAs optional features and yet offers more applications than the ESA. Migrate from ESA to EXA.
Contact
Tel: 13421364554
Email:
daruibo@daruibo,com
daruibo@daruibo,com
daruibo@daruibo,com
Add: Longhua District, Guangdong Province, the people show white Shilong Yi Fang Tiande Village East Building, Room 1412

Correctly judge the UAV pointing fault. Keep the electronic compass away from magnetic interference.

Date: 2016-11-17
Views: 385

As an important component of the UAV product, the electronic compass carries the function of guiding the absolute position of the drone. For ordinary designers, it is often difficult to correct the electronic compass, the calibration requirements are too frequent, the dynamic, high-speed operation suddenly deviates, and no matter how the electronic compass is corrected, it cannot operate normally. The main reason for the above failure is that the electronic compass is subject to magnetic field interference. For this problem, the world's leading magnetic sensor company, Aisheng Technology, has given a simple and efficient solution.

At present, the geomagnetic sensor IST8310 of the 3×3mm LGA package of Aisin Technology has a market share of over 80% in the drone market. The UAV products that can be seen on the market are all using Aisheng Technology. Geomagnetic sensors are the benchmark products for today's mainstream UAVs using geomagnetic sensors, so the drone test samples mentioned below are also of this model. It is well known that the magnetic field is inversely proportional to the distance of the distance, and the internal electronic compass of the drone is close to the rest of the electronic components. Therefore, the unreasonable arrangement of the internal system causes the electronic compass to be interfered by the magnetic field, which is often the case. Ignored by the designer. In order to avoid the crash situation caused by the electronic compass failure during the actual flight, after the drone completes the hardware proofing or trial operation, the actual flight is not required, and the accurate analysis of the electronic compass can be completed through the test. In the pre-test, the UAV was first fixed with wood, plastic, foam, and aluminum materials without magnetic fields. It is worth noting that the UAV is best equipped with a casing and a rotor, which can simulate the real flight time to the maximum extent. Case. Considering that the motor and circuit of the drone may be sources of magnetic interference, we need to export the data of 'X-axis magnetic field size, Y-axis magnetic field size, Z-axis magnetic field size, throttle size' from the I2C interface for storage and comparison. As an important basis for subsequent analysis.


正确判断无人机指向故障 让电子罗盘远离磁干扰

Figure 1: The internal system design of the drone is reasonable. The magnetic field is inductive and stable when the throttle is opened.


During the test, it is only necessary to adjust the throttle from off to on and advance step by step, perform several rounds of repeated tests, and finally summarize the data of several rounds of tests to the same time axis for presentation. Since the drone has been fixed and there is no azimuth movement, theoretically, no matter how the throttle is adjusted, the numbers of the magnetic fields of the X, Y, and Z axes should not change much, showing a stable situation. But in fact, because the electronic compass assembly itself and the system will have noise, the data lines will have a certain degree of up and down jitter, but the trend should be constant. The smaller the jitter, the more stable the moving path. Similarly, when the throttle is opened or closed, a surge circuit is actually generated, and the magnetic field also fluctuates. The smaller the data line jitter, the better the position of the electronic compass is placed, and the overall design of the system is reasonable. As shown in Figure 1, an internal system with the correct design of the drone experienced four throttle changes during the test, from zero to 100%, but the pointing angle, X-axis, Y-axis, and Z-axis magnetic fields did not fluctuate strongly. The data will fluctuate slightly when the throttle is opened or closed. It shows that the electronic compass will not be affected by the magnetic field interference in the system during operation, and the drone will have better handling performance.


  

正确判断无人机指向故障 让电子罗盘远离磁干扰

Figure 2: Problems with the internal system design of the drone The magnetic field fluctuates greatly when the throttle is opened.


Contrary to Figure 1, if there is a problem with the internal system design of the UAV, after the same test procedure, the data image will show significant deviation and fluctuation. As shown in Figure 2, the blue line in the lower picture in Figure 2 represents the throttle force. The orange line represents the pointing angle of the drone. Since the drone has been fixed, the angle of the pointing is not due to the increase of the throttle. Large reduction and change, but as can be seen from Figure 2, the UAV pointing angle in the test has deviated significantly, which indicates that the magnetic field induction of the electronic compass has changed. In the upper picture in Figure 2, it can be seen more clearly that the blue line (X axis), orange line (Y axis), yellow line (Z axis) have different degrees of fluctuation, and the Z axis has the largest fluctuation, X axis times. It. With this clue, you can further analyze where the source of the magnetic field changes is.

After the above detection process, if the designer can successfully find the magnetic interference source inside the drone, and repeat the above test again, the data image obtained by the test should be consistent with Figure 1, indicating the magnetic interference problem of the internal system of the UAV. It has been solved that the drone electronic compass can operate stably when the throttle changes. Through the solution given by Aisheng Technology, the drone can be screened in the early stage without actual flight, which not only reduces the test threshold, but also avoids the drone being out of control due to the failure of the electronic compass to operate normally. Machine risk provides a new idea for the industry.

(Source: Machine Network)

  

Related News: / Related News: More
2017 - 07 - 21
·Core Tips·■ China has many world-leading scientific and technological achievements in the fields of drones, Internet, cloud computing, biomedicine, and sharing economy.■ Artificial intelligence is expected to boost the annual growth rate of China's economy by 2035, and promote China's labor productivity by 27%.■ China must find a way out in innovation, persist in innovation drive, and b...
2017 - 07 - 17
The 2nd Silk Road Photovoltaic Industry Development Summit and Exhibition will be held on August 18-20 at Xi'an Qujiang International Convention and Exhibition Center (exhibition) and Xi'an Qujiang Ramada Plaza Hotel (Conference). Sponsored by Xi'an Municipal People's Government, International Renewable Energy Association, Shaanxi Solar Energy Industry Association, Gansu Solar Energy Wind Energy A...
2017 - 07 - 10
Recently, Qingdao Sipke finite element Technology Development Co., Ltd. and Russia's largest industrial simulation technology company, Russia PLM Ural Group, signed a cooperation agreement for the establishment of the 'Sino-Russian Joint Industrial Technology Center' in Qingdao. China's high-end equipment manufacturing industry provides world-class CAE (Computer Aided Engineering) simulation techn...
2017 - 07 - 07
Today, 80 years ago, the gunshots of Lugouqiao broke the tranquility of the world and opened the prelude to the Chinese nation's resistance to foreign enemies, the protection of the clan, and the defense of sovereignty. Nowadays, the smoke is scattered and peaceful, but the sufferings of the past cannot be forgotten. The sacrifices of the past have not been forgotten. The blood of the past has flo...
2017 - 07 - 06
Chinese manufacturing has leaped from the low end to the high end, and it is bound to coexist with fakes. China, which embraces 'Internet +', can explore new ways for counterfeit goods management and brand rights protection for consumers.The standard EMU 'Revival' was put into operation, and it took a key step for China's high-speed rail 'from catching up to leading'; the navy's new destroyer's fi...
2017 - 07 - 01
Today, electricity has become the most important terminal energy source in today's society. The stability and security of the power grid and the quality of power quality are important factors affecting the development of the national economy.With the continuous improvement of China's economic development level and the accelerating process of industrial automation, higher and higher requirements ar...
2017 - 04 - 10
In the two sessions just ended, instrument sharing has once again become a hot topic. The representatives of the two associations said: 'Open sharing is for the whole society, and it is necessary to increase the opening up to enterprises, especially small and medium-sized enterprises.'Scientific instrument resources are a valuable resource for the progress of human society. It is of great signific...
2017 - 03 - 22
China's femtosecond laser equipment has been localized, but lasers, which account for nearly 70% of their output, are still in the process of localization. At present, the technology has been included in the key technology of the 13th Five-Year Plan.Shengxiong Laser is a leading company in the domestic production of femtosecond laser equipment. The femtosecond laser device is a laser device used i...
Copyright ©2009 - 2019Shenzhen Darui Bo Electronics Co., Ltd.
犀牛云提供企业云服务
地址:广东省深圳市龙华新区白石龙逸秀新村东方天德大厦1412
TEl:13421364554
Fax:+86 0755-2788 8009
Zip Code:330520
X
1

QQ设置

  • cindy
3

SKYPE 设置

4

阿里旺旺设置

  • 旺旺客服maygliao
6

二维码名称

Unfolded