As domestic environmental pollution becomes more and more serious, especially water pollution, various industrial waste water and domestic sewage flow into the river, causing serious damage to the breeding industry. In recent years, large-scale dead fish incidents have occurred frequently in the country. Why? In the same way, in the past, there was a good harvest. Now the output is getting lower and lower, and even the inexplicable large-scale dead fish?
Large-scale dead fish is undoubtedly a heavy blow to the farmers, resulting in losses ranging from a few thousand to more than tens of millions. However, for ordinary farmers, it is basically based on experience and talking on the sky. The output is low and large-scale dead fish, the root cause is that the environment has changed. As the pollution of soil, atmosphere and water quality becomes more and more heavy, this directly leads to the malignant change of the growth environment of fishery. Aquaculture requires increased production, and water and soil are critical factors.
In the context of the upgrading of the fishery industry, it is necessary to increase the scale and breeding mode of high value-added varieties by adjusting the structure and promoting upgrading. The use of intelligent cloud computing to achieve environmental regulation of aquaculture waters, improve the aquaculture density of famous and excellent varieties, and achieve efficient aquaculture. The realization of efficient aquaculture can monitor and control the aquaculture water through a series of biological and physical means to create a water environment that is most suitable for fish growth. The key to achieving efficient breeding is the water circulation treatment and control system, which uses a variety of sensors such as water temperature sensor, turbidity sensor, pH sensor, ammonia nitrogen sensor, COD oxygen sensor, BOD oxygen sensor, DO dissolved oxygen sensor.
The core of the monitoring water quality state is the sensor. The water quality data is collected by the sensor, and then the data is sent wirelessly to the control center, the computer, and the mobile APP. The status of the current farming environment can be viewed at any time through the mobile APP. It can automatically realize intelligent early warning. When the water quality changes, the early warning can be realized in the first time. All of these are automated, and can be operated without people. If the dissolved oxygen in the water is as low as a set value, the system will automatically alert you. On the mobile APP or computer, you can see the specific data. The system will automatically turn on the aeration system to increase oxygen in the water. When the water reaches an upper limit, the system will automatically shut down the aeration system to save energy. Even if you are on a business trip, you can always know the farming situation at any time. For some areas that are not convenient for power supply, it can also be powered by new energy sources such as solar or wind energy. There are also many low-power options available for current sensors. Take the Qishan seven-parameter water quality sensor, using 12V power supply, the maximum current is less than 100mA, which is lower than the current power consumption of mobile phones.
Why is the automatic breeding system started to be promoted very early, but the acceptance of ordinary farmers is generally low? Xiaobian feels that there are five reasons:
1. The price is too high. Most of the water quality sensors are used in the industrial market. For imported products, just one sensor is tens of thousands of yuan, because the price makes the farmers discouraged.
2. Poor reliability. There are many domestic low-end products, a single sensor can do a few hundred dollars, but for long-term online monitoring, it may only be a few days or a week, then the data is not allowed, for such products, do not Instead, it is also worry-free.
3. Need regular maintenance. The staff of the farm are mostly older and have a limited cultural level. If a product needs them to be maintained frequently, it will not be a convenience for them, but it will be a burden.
4. The use is too complicated and not easy to use. What wireless, how to operate, how to interface each system, these are designed for engineers. The farmer does not know how to use it. The best operation is a fool-like operation.
5. The focus of many companies is not on users. Their purpose is to obtain government subsidies and do things with the mentality of the project pilot. Once the project is accepted, it can be ignored. It does not care whether the actual value is.
How can we meet the above conditions and meet the requirements of ordinary farmers? After small compilations, the following four recommendations are listed:
1. The sensor and each system work together, with long-term stability, and the product will not malfunction due to thunder or weather changes. For this, optical sensors have advantages.
2, does not require the user's cumbersome operation, the user only needs to know whether the value is high or low, all systemized operation, fool-like operation.
3, maintenance-free, the product can be placed in the fish pond, no need to go to the tube for several months, the product can have self-maintenance function. Take the water quality sensor, the most reliable is the optical principle, because it is light to detect the water quality, it can have lower maintenance work. The most troublesome thing in the wild is the growth of microorganisms, especially in summer. The sensor is placed for one week and can be filled with microorganisms. Because of the adhesion of microorganisms, it will inevitably affect the accuracy of the values. Fortunately, there are sensors with self-cleaning devices that can be cleaned for more than 3 months without the use of self-cleaning devices.
4. Low cost. Low cost is not about making cheap, poorly reliable, and poor quality products. It is not easy to be reliable, durable and simple at a price acceptable to the user. For the sales method, it is best to cut off the traditional layered agent model, the product is directly oriented to the end customer, and the cost of the intermediate channel is given to the consumer.
Finally, Xiaobian compiled four imported water quality sensors for the aquaculture industry, detailing their advantages and performance.
US sensorx underwater electric dissolved oxygen sensor - DO6400, DO7400
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