An underwater drone is a device that can be moved underwater, has a visual and sensory system, uses a robot or other tool to replace or assist a person to perform underwater tasks by remote control or autonomous operation. In the 1970s, underwater drones have been greatly developed, and a number of robots capable of working at various depths and performing various operations have been developed, which can be used for oil exploration, seabed mineral deposit investigation, salvage operations, Pipe laying and inspection, cable laying and inspection, marine aquaculture and dam inspection of rivers and reservoirs.
Considering the underwater consumption drone of civilian consumption level, the underwater drone can be used in aquaculture monitoring, reservoir dam inspection, scientific research exploration, underwater photography, island tourism and other fields.
1. Underwater visibility is much lower than in the air. In layman's terms, you can look up on the ground and you can look far and wide. However, in water, the visible range of the human eye becomes smaller as the brightness decreases. It is vaguely remembered that after diving for 20 meters in the sea, the naked eye cannot rely on natural light sources to observe the surrounding environment. However, with the underwater drone, the 100-meter dive and the distance of up to 500 meters can be completed by operation, which means that activities and observations can be carried out in waters hundreds of meters deep.
2. Underwater resistance is higher than air resistance First of all, air resistance, air resistance is affected by factors such as flight speed, contact area, air density, etc., so there is usually a flight environment test before aerial photography. The resistance of water is 800 times the air resistance. The difficulty of operating a drone in the water can be imagined.
3. Battery life problem The above said that the water resistance is greater than the air resistance, the greater the resistance, the more energy, so the battery life is a big short circuit of the drone.
Second, the operation is simple and practical. By downloading the app for remote operation on the smart device, the action can be performed in real time. Good maneuverability, operability, no risk of casualties. Second, the operation is simple and practical. By downloading the app for remote operation on the smart device, the action can be performed in real time.
First of all, from the development background: the traditional underwater operation, manual operation is not only very complicated, but personal safety can not be fully guaranteed. Moreover, with the increasing popularity of human marine activities, the development of various industries on the water and underwater is accelerating, and the demand for underwater drones will continue to rise in the future. This is the general trend.
Secondly, from the application field: underwater drones are similar to land drones, and have wide development potential. They can be widely used in fish farming, hull maintenance, sightseeing diving, sea mine exploration, marine monitoring, biological research, water. Under the navigation, underwater rescue, pipeline inspection and many other fields, it can well fit the future development direction of the marine economy and help the growth of the water industry.
In addition, from the product advantage: With the upgrade and mature application of underwater drone technology, not only can the risk of manual operation be greatly reduced, but also the operation efficiency can be improved and the corresponding expenditure cost can be reduced. At the same time, under the promotion of other cutting-edge technologies, underwater UAVs continue to improve in both comprehensive performance and cost-effectiveness, which can not only complete the work better, but also promote the scale development of this industry.
As a technology-intensive and systematic project, underwater robots mainly include six technologies: simulation, intelligent control, underwater target detection and recognition, underwater navigation (positioning), communication, and energy system. Compared with developed countries, China's underwater robots still have a big gap in the research of some key components and key materials. To achieve industrialization, the focus is on basic materials, important group components, various high-precision detection devices and sensors. Research and development, therefore, technological innovation will be a long-term job. In the future, once there is a breakthrough in detection technology, process level, integrated display and control, and integrated navigation, the application of new fields will be expanded, and the import substitution space will be broad.
In the "Robot Industry Development Plan (2016-2020)" formulated by the Ministry of Industry and Information Technology, the technical level has been significantly improved, major breakthroughs in key components, and significant results in integrated applications have been listed as development goals, and commonalities will be strengthened. Key technology research, establishment and improvement of robot innovation platform, strengthening of robot standard system construction, and establishment of robot testing and certification system, as concrete measures to strengthen industrial innovation capabilities to implement.
2. AUV's intelligence and endurance are keySince its inception in 1953, especially after 1974, along with the rapid development of the offshore oil and gas industry, AUV has also developed rapidly. Compared to ROV, AUV is suitable for a wider range of applications because it is not limited by cables and has a wide range of motion and good maneuverability.
On the one hand, the level of intelligence has become a key factor in the development of AUV technology. Intelligent control technology aims to improve the autonomy of underwater robots. Its architecture is the integration of artificial intelligence technology and various control technologies, which is equivalent to the human brain and nervous system. The software system is the overall integration and system scheduling of underwater robots, which directly affects the intelligence level. It involves the selection of basic modules, the relationship between modules, data (information) and control flow, communication interface protocols, and management of global information resources. And the overall dispatching agency.
On the other hand, AUV's requirements for energy systems are small size, light weight, high energy density, repeated use, safety and low cost. Currently, various energy systems under study include primary batteries, secondary batteries, fuel cells, heat engines, and nuclear energy. Recently, MIT's derivative Open Water Power (OWP) announced that it has successfully developed a new safer and more durable aluminum-water battery system. Compared with traditional lithium-ion batteries, the new system enables underwater robots. The endurance has increased tenfold.
3. The marine fishery sector will be the blue ocean of the futureThe first is that the market space is huge. In terms of fish farming, China's aquaculture area is 8465 thousand hectares, of which seawater aquaculture area accounts for 27.38%, and freshwater aquaculture area accounts for 72.62%. There are 32,000 aquaculture farms in the country with an area of ​​10 million hectares. It is necessary to check the temperature, salinity, pH value, dissolved oxygen, etc. of fish, shellfish, sea cucumber, etc., cage inspection, artificial reefs, etc. Both provide huge market demand for underwater robots.
Second, it is technically feasible. Compared with the marine oil and gas industry, the application of underwater robots in marine fisheries has two major advantages: First, the depth of seawater in fisheries is shallow, so the technical difficulty is greatly reduced, and the operation is simple; second, the fishery requires less difficulty on the topography of the seabed. Therefore, a general small underwater robot can meet the operation requirements.
In the implementation path, the underwater robot transmits the video and water quality data to the land control room through the intelligent terminal, and then sends it to the user's terminal by the land control room. The user can watch the video and water quality parameters through the terminal, and send instructions such as aeration and feeding according to the breeding needs to realize remote monitoring and full automation of the aquaculture waters.
4. The outlook for the consumer sector is expectedIn terms of market size, the global experiential diving service market has grown at an average rate of about 15% in the past five years, and in 2015 it was close to $25 billion. At present, the size of global diving enthusiasts has reached 200 million, and the consumer-grade underwater imaging market has reached tens of billions of dollars. Some mature enterprises have emerged. Take OpenROV as an example. It was launched in 2012. Its main purpose is to shoot underwater images. It is equipped with three propellers, LED headlights, plastic rubber and rope. Consumers can control OpenROV with open source software on computing devices, with a top speed of 2m/s and a battery life of 3 hours.
The average growth rate of China's experiential diving service market in the past five years has reached about 36.5%, which is significantly higher than the global growth rate. In 2015, it exceeded US$2.1 billion. At present, a number of enterprises in China have begun to preempt the layout of consumer-grade markets, such as Deep Blue, Fin Source Technology, Boya Engineering, Stealth Technology, and Micro-Fu Technology.
In summary, under the guidance of the government and the enterprise-led principle, underwater robots have great potential in marine environmental monitoring, marine resource development, disaster prevention and mitigation, and protection of the marine environment.
Features: 12v Dc geared motor drive precision, small volume, large torque, low noise, durability, low energy consumption, customized power design,easy installation, easy maintenance;Simplify design and save space.
12V Dc Gear Motor, namely gear reduction motor, is based on ordinary Dc Motor, coupled with gear reduction gearbox.
The gear reducer is used to provide low speed and large torque.
At the same time, the gearbox with different deceleration ratio can provide different speed and torque.
Generally different industries, using different power dc motor, generally adopt custom parameter design pattern.
Method of use: the best stable in horizontal plane, installed on the 12v dc gear motor output shaft parts, cannot use a hammer to knock,knock prone to press into the 12v dc gear motor drive, may cause damage to internal components, and cannot be used in the case of blocked.
Operating temperature range:
12v Dc geared motors should be used at a temperature of -10~60℃.
The figures stated in the catalog specifications are based on use at ordinary room temperature catalog specifications re based on use at ordinary room temperature (approximately20~25℃.
If a geared motor is used outside the prescribed temperature range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.Depending on the temperature conditions ,it may be possible to deal with them by changing the grease of the motor's parts.Please feel free to consult with us about this.
Storage temperature range:
12v Dc geared motors should be stored ta a temperature of -15~65℃.
In case of storage outside this range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.
Service life:
The longevity of 12v Dc geared motor is greatly affected by the load conditions , the mode of operation,the environment of use ,etc.Therefore,it is necessary to check the conditions under which the product will actually be used .The following conditions will have a negative effect on longevity.Please consult with us should any of them apply.â—Use with a load that exceeds the rated torque
â—Frequent starting
â—Momentary reversals of turning direction
â—Impact loads
â—Long-term continuous operation
â—Forced turning using the output shaft
â—Use in which the permitted overhang load or the permitted thrust load is exceeded
â—A pulse drive ,e.g.,a short break,counter electromotive force,PWM control
â—Use of a voltage that is nonstandard as regards the rated voltage
â—Use outside the prescribed temperature or relative-humidity range,or in a special environment.
â—Please consult with us about these or any other conditions of use that may apply,so that we can be sure that you select the most appropriate model.
when it come to volume production,we're a major player as well .each month,we rurn out 600000 units,all of which are compliant with the rohs directive.Have any questions or special needed, please contact us, we have the engineer group and best sales department to service to you Looking forward to your inquiry. Welcome to our factory.
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