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Overview:
Marine biological resources play a decisive role in the global diversity of species, especially in the offshore areas, which brings senses to mankind and material satisfaction. It is also the basis for the survival of coastal residents. With the rapid increase of the population, the demand for fishery is also increasing. However, the number of marine organisms in the offshore area is limited. If uncontrolled fishing is carried out, it will cause irreversible damage to the marine biological resources in the offshore areas, and it will also make Afterwards, coastal residents faced dangerous situations without fish and fishing.
To this end, the Ministry of Agriculture of the People's Republic of China implements a closed fishing season and has been operating in the Yellow Sea and the East China Sea since 1995. Since 1999, the three sea areas have been in continuous operation for two months to three months in the South China Sea. In order to alleviate the enormous pressure caused by too many fishing boats and excessive fishing intensity on fishery resources, the implementation of the quarter-sea fishing system has played an important role in curbing the decline of marine fishery resources and increasing the resources of major economic fish stocks.
Summer is an important period for the main economic fish breeding and young fish growth in the ocean. Practices over the years have proved that the season off fishing protects the resources of parent fish and juvenile fish of the major economic fishes and makes the marine fishery resources recuperate and have significant ecological benefits. Fishing boats also saved production costs during the fishing season. After the end of the fishing season, catch production increased and quality improved.
During the fishing season, most practitioners are able to follow the relevant laws and regulations of the country and use their own actions to support nature and understand the country. However, there are still a few people who ignore the regulations, ignore the sustainable development of fisheries and engage in illegal fishing.
User needs analysis In order to implement the moratorium policy, a fishery department conducts patrol inspections in relevant sea areas, conducts command and dispatch through command centers, and advises and detains illegal vessels according to law; law enforcement video information is retained according to law.
Designing and thinking about user programs During the law enforcement operation, the Bureau of Fisheries was located in the offshore area and had no fixed location. Traditional wired or point-to-point transmission could not be realized, and there were various problems with cost and coverage area. In view of this situation, we adopt the COFDM mobile video wireless transmission scheme, which makes the video transmission in this case better.
When designing a wireless solution, the following system design principles are followed: This design mainly implements two main lines of “high quality†and “low cost†for design. Considering the factors of construction, maintenance and operation in an integrated manner, there will be room for expansion for future development and maintenance of additional levels. The system design content is systematic, complete, and comprehensive; the design scheme is scientific, reasonable, and operable.
The implementation of specific programs discusses this program consists of three parts: the patrol boat law enforcement unit at the front, the fisheries mother ship transit unit, the receiving unit at the rear command center.
The first part is that the SF-8600MP-NIMI, a wireless transmitter of the front-end patrol law enforcement unit passing 1W power, transmits the video information generated at the law enforcement scene to the fishery mother ship. The wireless equipment used at the front end is considered to be carried by the law enforcement personnel when selecting the type of wireless equipment. , And the transmission distance is relatively short, so the mobile video transmitter with less power is used.
The second part is the receiving, storing and forwarding part of the fishery mother ship. The ship's wireless receiver SF-MR1U800S is loaded on the ship and outputs the received video information to the DVR installed on the ship for local storage and viewing; the distance from the Fishery Dispatching Command Center to the Fishery Mothership is approximately 20KM or so, so use the company's high-power mobile video wireless transmitter SF-M8801H20W DVR high-definition video signal to go out.
The third part is the shore monitoring center, which can install the company's mobile video wireless receiver SF-MR1U800S at the commanding height to receive signals from the fishery law enforcement ship and project video information to giant screen or video wall for reference by dispatchers. .
The field transmission wireless topology is as follows:
Marine biological resources play a decisive role in the global diversity of species, especially in the offshore areas, which brings senses to mankind and material satisfaction. It is also the basis for the survival of coastal residents. With the rapid increase of the population, the demand for fishery is also increasing. However, the number of marine organisms in the offshore area is limited. If uncontrolled fishing is carried out, it will cause irreversible damage to the marine biological resources in the offshore areas, and it will also make Afterwards, coastal residents faced dangerous situations without fish and fishing.
To this end, the Ministry of Agriculture of the People's Republic of China implements a closed fishing season and has been operating in the Yellow Sea and the East China Sea since 1995. Since 1999, the three sea areas have been in continuous operation for two months to three months in the South China Sea. In order to alleviate the enormous pressure caused by too many fishing boats and excessive fishing intensity on fishery resources, the implementation of the quarter-sea fishing system has played an important role in curbing the decline of marine fishery resources and increasing the resources of major economic fish stocks.
Summer is an important period for the main economic fish breeding and young fish growth in the ocean. Practices over the years have proved that the season off fishing protects the resources of parent fish and juvenile fish of the major economic fishes and makes the marine fishery resources recuperate and have significant ecological benefits. Fishing boats also saved production costs during the fishing season. After the end of the fishing season, catch production increased and quality improved.
During the fishing season, most practitioners are able to follow the relevant laws and regulations of the country and use their own actions to support nature and understand the country. However, there are still a few people who ignore the regulations, ignore the sustainable development of fisheries and engage in illegal fishing.
User needs analysis In order to implement the moratorium policy, a fishery department conducts patrol inspections in relevant sea areas, conducts command and dispatch through command centers, and advises and detains illegal vessels according to law; law enforcement video information is retained according to law.
Designing and thinking about user programs During the law enforcement operation, the Bureau of Fisheries was located in the offshore area and had no fixed location. Traditional wired or point-to-point transmission could not be realized, and there were various problems with cost and coverage area. In view of this situation, we adopt the COFDM mobile video wireless transmission scheme, which makes the video transmission in this case better.
When designing a wireless solution, the following system design principles are followed: This design mainly implements two main lines of “high quality†and “low cost†for design. Considering the factors of construction, maintenance and operation in an integrated manner, there will be room for expansion for future development and maintenance of additional levels. The system design content is systematic, complete, and comprehensive; the design scheme is scientific, reasonable, and operable.
The implementation of specific programs discusses this program consists of three parts: the patrol boat law enforcement unit at the front, the fisheries mother ship transit unit, the receiving unit at the rear command center.
The first part is that the SF-8600MP-NIMI, a wireless transmitter of the front-end patrol law enforcement unit passing 1W power, transmits the video information generated at the law enforcement scene to the fishery mother ship. The wireless equipment used at the front end is considered to be carried by the law enforcement personnel when selecting the type of wireless equipment. , And the transmission distance is relatively short, so the mobile video transmitter with less power is used.
The second part is the receiving, storing and forwarding part of the fishery mother ship. The ship's wireless receiver SF-MR1U800S is loaded on the ship and outputs the received video information to the DVR installed on the ship for local storage and viewing; the distance from the Fishery Dispatching Command Center to the Fishery Mothership is approximately 20KM or so, so use the company's high-power mobile video wireless transmitter SF-M8801H20W DVR high-definition video signal to go out.
The third part is the shore monitoring center, which can install the company's mobile video wireless receiver SF-MR1U800S at the commanding height to receive signals from the fishery law enforcement ship and project video information to giant screen or video wall for reference by dispatchers. .
The field transmission wireless topology is as follows:
Patrol Boat Fishery Enforcement Unit:
Fishery transfer ship:
Fishery Dispatch and Command Center:
This project uses the following two products of our company:
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