The working principle, flow and application of fish finder
Fish finder Ultrasonic fish finder consists of display host, ultrasonic sensor and other accessories. When working, it mainly uses the principle of ultrasonic emission, reflection and reception.
1. Working principle
Ultrasonic fish finder consists of display host, ultrasonic sensor and other accessories. When working, it mainly uses the principle of ultrasonic emission, reflection and reception. Using ultrasonic waves as detection means, ultrasonic waves must be generated and received. The device that accomplishes this function is an ultrasonic sensor, which is customarily called an ultrasonic transducer. When the fish finder works, the ultrasonic sensor first transmits the signal, and the signal spreads in the water. When the transmitted signal encounters a medium different from water, such as solid, gas, etc. (mainly fish, seabed rocks, etc.), part of the signal will be reflected back, and the reflected signal will be filtered by the sensor and input to the display host for analysis and processing. After analyzing and processing the filtered signal, the microprocessor in the host will display the analysis results in an intuitive interface, such as the structure of the bottom of the water, the depth of the water, the position of the fish, and the size of the fish.
2. Workflow
The fish finder relies on sonar to detect the presence and azimuth, depth, etc. of fishes. It relies on the compass to give the compass azimuth, temperature and pitch angle of the underwater measurement point; because the speed sensor interface of the sonar outputs the analog signal, the computer cannot accept the analog signal. Therefore, a hardware device data acquisition instrument is added to the system to perform analog-to-digital conversion on the data output by the detector and store it temporarily. The computer reads the measurement and detection data of each equipment at regular intervals, analyzes and processes it, and then analyzes the processed data to obtain the results, which are finally displayed on the display screen at the same time, allowing you to see the overall situation of navigation, detection and fishing. , to bring great convenience to fishing operations.
3. Application
With the development of ocean exploration and development, people pay more and more attention to solving the problem of perception and transmission of underwater targets. Hydroacoustics is the science that solves the transmission and processing of information in the ocean. Hydroacoustics mainly studies the radiation, propagation and reception of sound waves underwater to solve various acoustic problems related to underwater target detection and information transmission. As the information carrier, the sound wave forms the spatiotemporal structure of the sound field in the ocean, which has become the basic research content of modern hydroacoustics, and the spatiotemporal structure of the sound field information in the ocean is extracted by us for underwater detection, identification, communication and environmental monitoring. means, such as long-distance target detection, marine resource development and fish school detection. It goes without saying that these are of great significance to the national economy, national defense construction and scientific research.
As people's exploration of the ocean becomes more and more extensive, the scope of use of fish finder is also increasing. At the same time, with the development of use requirements, the fish finder has gradually evolved from a single function to a multi-functional one, which is more convenient. The use and needs of the majority of users.
Nantong Saiyang Electronics
We are professional manufacturer of fish finder, echo sounder and transducer, and we have been committed to the research and development for underwater ultrasonic detection for more than 18 years. So we accept ODM/OEM order.
We have got CCS approval for navigational echo sounder, and we got CE certificate for all of our products.