CN102889946A - Device for sensing and measuring temperature and salinity of water body on surface layer - Google Patents

Abstract

The invention discloses an in-situ sensing and measuring device for body temperature and salinity of surface water. The invention includes a microprocessor, a geographic space positioning module, a battery, a communication module, a sensor data acquisition module, an integrated circuit board, a plastic floating body, a temperature sensor, a salinity sensor, and a rubber plug; the plastic floating body is provided with an integrated circuit board and a rubber plug , the battery powers the integrated circuit board, the microprocessor is installed on the integrated circuit board, the geospatial positioning module and the communication module are arranged on the top of the plastic floating body, the geospatial positioning module, the communication module and the sensor data acquisition module are connected to the integrated circuit board through the transmission line connection, and the geospatial positioning module, sensor data acquisition module, microprocessor, communication module, and battery are all integrated on the integrated circuit board, the rubber plug is set at the bottom of the plastic floating body, and the two rubber plugs are respectively installed with a temperature sensor and a salinity sensor . The invention provides large amount of measurement data, high measurement accuracy and low cost.

Description

An in-situ sensing and measuring device for surface water body temperature and salinity

technical field

The invention belongs to the technical field of marine water body detection, and in particular relates to a surface water temperature and salinity measuring device, in particular to an in-situ sensing and measuring device for surface water body temperature and salinity.

Background technique

The surface area of the ocean accounts for 70% of the earth's surface area. The ocean surface temperature and salinity are two very important physical parameters for studying oceanographic and meteorological topics such as ocean circulation, atmospheric circulation, ocean temperature front, ocean weather and climate. The temporal and spatial distribution of temperature and salinity in fishery production activities and meteorological services is also closely related to the spatial and temporal distribution of offshore aquaculture, marine environmental pollution, thunderstorm anomalies, and tropical cyclones. A large number of long-term in-situ measurement data will provide an important data basis for the study of the mechanism of the influence of sea surface temperature and salinity on the atmosphere and ocean. Estuaries and nearshore water bodies are areas where land-source water bodies and seawater meet, and hydrological elements vary greatly in time and space, making environmental damage and pollution more likely to occur. Red tide is a kind of environmental pollution problem that often occurs in coastal and estuary areas. Although the coastal environment of my country is complex and changeable, sea temperature, salinity, air temperature and wind field are important environmental physical factors for the occurrence, development and extinction of red tide. The real-time in-situ measurement data of sea surface temperature and salinity will play an important role in the early warning and control of red tide. With the development of remote sensing technology, the telemetry of large-area sea surface data has become an important means for the study of large-scale changes, but the improvement of the accuracy of the inversion model of telemetry technology is based on a large number of effective in-situ measurement data. Up. At the same time, studies on the temperature and salinity of inland water bodies are emerging. Temperature has a great impact on biological activities in inland water bodies. Changes in temperature and salinity can also lead to changes in the release of endogenous phosphorus and other substances in sediments. To sum up, temperature and salinity are important physical parameters of oceans and inland water bodies, and the acquisition of in-situ measurement data is of great significance.

The existing methods for observing the temperature and salinity of the water surface are: navigation, buoy and remote sensing.

The navigation method refers to the linear sampling point measurement of the passing water along the route of the survey ship. The data is relatively accurate, but the timeliness is poor and the cost is high, and the navigation route is sparse enough to represent the temperature and salinity of the entire research water area. The second method, buoy measurement, refers to placing buoys with temperature and salinity sensors at fixed points in the research waters, and the measurement data is sent back to the ground through wireless transmission. Although the data can be transmitted in real time, the volume of the buoy is relatively large, the density of the buoy is small, the cost is relatively high, it is greatly affected by the change of the water surface, and it is easy to lose, and it is a fixed-point measurement, which cannot provide complete information on the entire water area; The third method is to invert the temperature and salinity data of the water surface through the inversion of signals received by remote sensing satellites. However, since the accuracy of the inversion model cannot meet the requirements, especially the inversion of salinity has just started, so using Its advantage of being able to measure a large area is not reflected. At the same time, the remote sensing inversion model is also established based on the relationship between a large number of practical in-situ measurement data and the signals received by the sensor, so in-situ measurement is also very important for remote sensing methods.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the existing water surface temperature and salinity measurement technology, such as poor timeliness of measurement data, scarce measurement data, low measurement accuracy and high measurement cost, and provide an in-situ sensor for surface water temperature and salinity The measuring device has strong timeliness, a large amount of measurement data, relatively high precision, low cost, small volume and free floating.

The technical solution adopted by the present invention to solve its technical problems is:

The invention includes a microprocessor, a geographic space positioning module, a battery, a communication module, a sensor data acquisition module, an integrated circuit board, a plastic floating body, a temperature sensor, a salinity sensor, and a rubber plug.

An integrated circuit board and a rubber plug are arranged in the plastic floating body, and the battery supplies power to the integrated circuit board. The sensor data acquisition module is connected to the integrated circuit board through a transmission line, and the geospatial positioning module, sensor data acquisition module, microprocessor, communication module, and battery are all integrated on the integrated circuit board, and the rubber plug is set at the bottom of the plastic floating body. The rubber plugs are respectively equipped with temperature sensors and salinity sensors;

The plastic floating body is used as a water surface floating instrument;

The geospatial positioning module, optional GPS positioning circuit module, Beidou positioning circuit module, Galileo positioning circuit module and other circuit modules for geospatial positioning, are used to receive global positioning system signals according to the data acquisition instructions of the microprocessor , determine the geospatial position where the current floating body device is located, and input it to the microprocessor;

The temperature sensor and the salinity sensor are exposed in the water body, and are used to detect the temperature and salinity of the surface water body, so as to ensure that the temperature and salinity parameters of the water surface collection position correspond to the spatial position parameters of the sampling point; and the detection data is transmitted to the data acquisition module;

The sensor data acquisition module is used to output water body temperature and salinity signals to the microprocessor according to the data acquisition instructions of the microprocessor;

The communication module can select information transmission circuits such as radio communication circuit, WIFI communication circuit, GPRS communication circuit, G communication circuit, etc., and is used to send instructions according to the data of the microprocessor, and the temperature and salinity of the water body and the geographical space position The information is transmitted wirelessly to the ground monitoring center;

The ground monitoring center sends a data collection command to the microprocessor via the communication module to start data collection and transmission.

Beneficial effects of the present invention are mainly as follows:

The invention adopts on-site in-situ sensing method for measurement, with high parameter measurement accuracy and high efficiency; adopts a geographic space positioning module to ensure that the water body temperature and salinity information corresponds to the spatial location and geographical parameters of the sampling point; it adopts a combination of wireless communication and self-contained work , the location of data collection can be widely adapted, and the control is flexible and active; it adopts large-area layout, low cost of single data, and high flexibility; small volume, low interference, and high precision of sample data; it can float for a long time by itself, and the measurement device can be repeated It is easy to use and has low maintenance cost; the command issued by the ground computer can obtain parameters with consistent timing, which is convenient for data analysis, easy to achieve synchronization with remote sensing detection, and convenient for verification work.

To sum up, the present invention realizes the requirement of in-situ measurement of water surface temperature and salinity, with large amount of measurement data, accurate measurement, simple measurement device, low measurement cost and flexible measurement method. It can provide an important data basis for the establishment and improvement of the water surface temperature and salinity remote sensing inversion model. If it is possible to carry out regional distribution and reasonably predict the floating route and network conditions, the dynamic visualization simulation analysis of the temperature field and salinity field distribution of the regional water surface layer can be realized in real time and accurately.

Description of drawings

 Fig. 1 is the overall schematic diagram of the present invention;

Figure 2 is a sectional view of the present invention;

In the figure, microprocessor 1, geospatial positioning module 2, battery 3, communication module 4, sensor data acquisition module 5, integrated circuit board 6, plastic floating body 7, temperature sensor 8, salinity sensor 9, rubber plug 10.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing.

As shown in Figure 1 and Figure 2, an in-situ sensing and measuring device for surface water temperature and salinity includes a microprocessor 1, a geospatial positioning module 2, a battery 3, a communication module 4, a sensor data acquisition module 5, and an integrated circuit Plate 6, plastic floating body 7, temperature sensor 8, salinity sensor 9, rubber plug 10.

An integrated circuit board 6 and a rubber plug 10 are arranged in the plastic floating body 7, the battery 3 supplies power for the integrated circuit board 6, the microprocessor 1 is installed on the integrated circuit board 6, and the geospatial positioning module 2 and the communication module 4 are arranged on the plastic floating body 7 Top, geospatial positioning module 2, communication module 4 and sensor data acquisition module 5 are connected with integrated circuit board 6 through transmission line, and geospatial positioning module 2, sensor data acquisition module 5, microprocessor 1, communication module 4, battery 3 are integrated on the integrated circuit board 6, the rubber plug 10 is arranged at the bottom of the plastic floating body 7, and the two rubber plugs 10 are respectively equipped with a temperature sensor 8 and a salinity sensor 9;

Described plastic floating body 7 is used as water surface floating instrument;

The geospatial positioning module 2, optional GPS positioning circuit module, Beidou positioning circuit module, Galileo positioning circuit module and other circuit modules for geospatial positioning, for receiving global positioning according to the data acquisition instruction of the microprocessor 1 The system signal is used to determine the current geospatial position of the floating body device and input it to the microprocessor 1;

The temperature sensor 8 and the salinity sensor 9 are exposed in the water body, and are used to detect the temperature and salinity of the surface water body, so as to ensure that the temperature and salinity parameters of the water surface collection position correspond to the spatial position parameters of the sampling point; and transmit the detection data To the data acquisition module 5;

The sensor data acquisition module 5 is used to output water body temperature and salinity signals to the microprocessor 1 according to the data acquisition instruction of the microprocessor 1;

The communication module 4 can select information transmission circuits such as radio communication circuits, WIFI communication circuits, GPRS communication circuits, 3G communication circuits, etc., for sending instructions according to the data of the microprocessor 1, and the temperature and salinity of the water body and the geographic location The spatial position information is transmitted to the ground monitoring center through wireless means;

The ground monitoring center sends a data collection command to the microprocessor 1 via the communication module 4 to start data collection and transmission.

The working process of the present invention is as follows:

First, the microprocessor 1 obtains the spatial geographic location parameters through the geospatial positioning module 2, obtains temperature and salinity signals through the sensor data acquisition module 5, and sends data acquisition instructions and data transmission instructions; the sensor data acquisition module 5 is controlled by the A/D Conversion, signal acquisition and conditioning circuits; temperature sensor 8 and salinity sensor 9, mainly sensing the temperature and salinity of the surface of the water body; rubber plug device 10, mainly used for fixing the sensor and sealing the floating body device, protecting the internal integrated circuit plate device.

The floating body device 7 will float freely in the predetermined water area, and the data collection instruction is issued by the microprocessor 1 according to the set plan, or the computer on the ground sends an instruction through the wireless network to carry out data collection and transmission operations; the communication module 4 is in the microprocessor Under the command of 1, parameters such as water body temperature and salinity and the spatial position of the sampling point are transmitted to the ground monitoring center through wireless means; the device is also designed as a data self-contained mode, and all data can be temporarily stored on the memory card. After the operation is completed, it is recovered to the ground and then the data is exported. This function is designed to adapt to some measurement locations that have not yet been covered by wireless communication.

In the prior art, a large number of temperature and salinity in-situ measurement devices have not been seen in the surface layer of the water body. The significance of the present invention is to obtain a large number of in-situ measurement data of temperature and salinity on the surface layer of the water body, with high measurement accuracy, low data cost, and a large amount of data. Large, which provides a strong technical basis for calibration and verification; using this method, reasonably arranging sensors and optimizing the parameter acquisition strategy, the distribution and change law of water surface temperature and salinity that change in time series in three-dimensional space can be obtained.

Claims (2)

1. surface water thermohaline degree original position sense measuring device, comprise microprocessor, geographical space locating module, battery, communication module, sensor data acquisition module, surface-mounted integrated circuit, plastic float, temperature sensor, salinity sensor, rubber plug, it is characterized in that:

Be provided with surface-mounted integrated circuit in the plastic float, rubber plug, battery is the surface-mounted integrated circuit power supply, microprocessor is installed on the surface-mounted integrated circuit, the geographical space locating module, communication module is arranged on the plastic float top, the geographical space locating module, communication module is connected with surface-mounted integrated circuit by transmission line with the sensor data acquisition module, and geographical space locating module, the sensor data acquisition module, microprocessor, communication module, battery all is integrated on the surface-mounted integrated circuit, rubber plug is arranged on the plastic float bottom, and two rubber plugs are separately installed with temperature sensor, salinity sensor;

Described plastic float is as the floating on water instrument.

2. a kind of surface water thermohaline degree original position sense measuring device according to claim 1, it is characterized in that described geographical space locating module, optional GPS positioning circuit module, Big Dipper positioning circuit module, Galileo positioning circuit module, be used for the data acquisition command reception global positioning system signal according to described microprocessor, determine the geospatial location at current buoyant means place, and be input to microprocessor;

Described temperature sensor and salinity sensor are exposed in the water body, for detection of temperature and the salinity of surface water, guarantee that the thermohaline degree parameter of water surface collection position is corresponding with the space position parameter of sampled point; And will detect data and be sent to data acquisition module;

Described sensor data acquisition module is for exporting water temperature and salinity signal according to the data acquisition instruction of microprocessor to microprocessor;

Described communication module, can select radio communication line, WIFI telecommunication circuit, GPRS telecommunication circuit, G telecommunication circuit, be used for sending instruction according to the data of microprocessor, described water temperature and salinity and geospatial location information exchange crossed wireless mode send the ground monitoring center to;

The described communication module of the heart channel of Hang-Shaoyin sends the data acquisition instruction to microprocessor in the described ground monitoring, the collection of log-on data and transmission operation.

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