What is the function of multi-sensor information fusion technology
As early as the 20th century, multi-sensor information fusion technology has been developed. It uses computer technology to automatically analyze and synthesize multi-sensor or multi-source information and data under certain criteria to complete the required decision-making. And estimate the information processing process. The use of multi-sensor information fusion technology has brought great convenience to people's work and life, and promoted the development of my country's modern society.
1. The definition of multi-sensor information fusion
Multi-sensor information fusion is the use of well-known computer technology to automatically analyze and process the information and data in the multi-sensor using specific criteria to complete a set of information processing. Multi-sensor information fusion technology was first used in the military field. If multi-sensor information fusion is applied in the military field, it can be defined as processing detection. It has more in-depth research in estimation and interconnection. From it, more accurate and correct identity estimates, threat estimates, and conditions can be obtained, so it can bring more convenience to the military industry. In the continuous evolution of society, multi-sensor has evolved into information and data fusion experts. Research by related personnel has shown that the information processing and analysis functions contained in multi-sensor systems have far exceeded the human brain’s understanding of information. ability. The human brain is a natural system that understands, analyzes, and processes information and data. Everything that the human eye sees and everything that the ear hears will be gathered in the brain, and every sense of sight, hearing or smell is integrated and processed. Then estimate it through knowledge, so that human beings understand everything around them. Multi-sensor information fusion technology is also the same concept, but the processing capacity of information and data in its system is dozens of times higher than that of ordinary people. Such a system is undoubtedly a kind of ultra-high information when applied in various industries. Processing function. As long as we make full use of the resources of the multi-sensor, and make reasonable use of these sensors, and complement the information and data in each multi-sensor system in time or space, the object to be measured can be obtained in the multi-sensor system, thereby making the The information processing and other functions of the sensor itself are more optimized. However, it should be noted that when applying multi-sensor information fusion, the data in the multi-sensor system may show different characteristics. Sometimes it may be real-time data, and sometimes it is non-real-time data. It is a state of mutual support or complementarity, and sometimes data is contradictory, so when applying multi-sensor information fusion, we must pay attention to these phenomena.
2. Function description of multi-sensor information fusion
(1) Calibration
In the multi-sensor information fusion, it has a calibration function. Its function is to unify the space and time in each sensor. However, when the calibration level is actually applied, the frequency of the information collection of each sensor is different, so it makes There are also differences in the space where the sensor is located. Since each sensor works independently, corresponding improvements must be made in response to this situation, striving to make the working time and acquisition frequency of each sensor unified, and there are many ways to calibrate the time and space of each sensor in the multi-sensor system. , The more commonly used methods are interpolation and extrapolation and virtual fusion.
(2) Multi-sensor information fusion method
Multi-sensor information fusion technology has been applied so far, and there are many application methods. Among all methods, the more mature methods include cluster analysis method, evidence theory method, DS algorithm, optimal theory method, etc. In recent years, a new method of information fusion has been developed, that is, computer intelligence methods, which include neural networks, wavelet analysis theories, and fuzzy set theory. Computer intelligence methods have been widely used within a short period of time. , It can be seen that the fusion effect is quite good.
Third, the application of multi-sensor information fusion
(1) Application of multi-sensor information fusion in the military field
For the peace of the country, each country has invested a lot of financial, manpower, and material resources in the military field. my country has also invested a lot in multi-sensor information fusion technology, and has achieved good results. Many countries such as the United Kingdom and the United States have developed a variety of military systems. These systems have good information fusion functions. The multi-sensor information fusion system developed by the United Kingdom includes the "Artillery Intelligent Information Fusion System" and "Mobile And control system" etc. The most ingenious part of the "distributed data fusion" developed in the United Kingdom is that it is a combination of distributed technologies in the data fusion technology, while the data fusion technology in my country uses centralized data, and all information or data is Completed at one level. One disadvantage of the centralized information fusion system is that if the central node is destroyed or attacked, it will cause damage to the entire multi-sensor information fusion system, but such a situation will not occur in distributed information fusion. All operations are performed on each node, so that even if a node is attacked or destroyed, it will not cause the entire system to collapse. The British company that developed this system has already experimented with this system and achieved complete success. The experiment involved eight different nodes. Among these nodes, a network interconnection method was adopted. This system can independently carry out the nodes. Layout, if the positioning radar finds the enemy, the autonomous drone will receive the information and fly to the relevant area to check the situation. The surveillance radar can track on the ground. It tracks the designated target, even if it is the tracked target If you are not in sight, you can also maintain virtual tracking or virtual alert at all times. If one of the autonomous drones flies over the sensor, the drone can also introduce this sensor into the original network. This advantage is incomparable to many systems. In this way, it will enable a multi-sensor system. The information and data collected in this article are more accurate and safer.
(2) Application of multi-sensor information fusion in the civil field
With the continuous development of economy and society, multi-sensor information fusion technology has been applied to the civilian field, and it has obtained very good application effects in the agricultural field. It is mainly used in the fault diagnosis of intelligent transportation and industrial robots and unmanned driving of automobiles, etc. aspect. In the application of car unmanned driving, the multi-sensor information fusion technology uses the control system to complete the unmanned driving of the car. This system is equipped with multiple functions such as positioning system, inertial sensor, digital map, etc. It can control the driving direction of the car in real time, and can also automatically detect the shape of the ground section. At the same time, the system can also monitor the road conditions and obstacles ahead. Detection makes driverless cars more safe and stable. After driverless cars were developed, many people doubted their safety, but practice has proved that driverless cars using multi-sensor information fusion technology are sufficiently safe.
In the continuous development of multi-sensor information fusion technology, although there are still certain disadvantages in the system, relevant researchers are constantly developing and improving it, but the application of multi-sensor information fusion has promoted the modern development of our country. The development of my country's military and civilian fields provides good conditions for development. With the continuous maturity and development of related technologies, multi-sensor information fusion technology will surely promote the better development of more industries and fields in China.
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