CN214471336U - Ocean buoy platform infrared temperature measurement sensor self calibration system - Google Patents
Ocean buoy platform infrared temperature measurement sensor self calibration system Download PDFInfo
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- CN214471336U CN214471336U CN202120093651.5U CN202120093651U CN214471336U CN 214471336 U CN214471336 U CN 214471336U CN 202120093651 U CN202120093651 U CN 202120093651U CN 214471336 U CN214471336 U CN 214471336U
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Abstract
The utility model discloses an ocean buoy platform infrared temperature measurement sensor self calibration system, including main control system, electric power system, infrared temperature measurement sensor self calibration unit, meteorological hydrological sensor unit and the communication system that is located buoy platform, main control system receives the signal of infrared temperature measurement sensor self calibration unit and meteorological hydrological sensor unit to communicate with the bank station receiving terminal through the communication system, electric power system provides electric power support for above-mentioned unit; the infrared temperature measurement sensor self-calibration unit comprises at least three blackbody cavities which are positioned around the infrared temperature measurement sensor, the mouths of the blackbody cavities face the infrared temperature measurement sensor, the infrared temperature measurement sensor is installed on the rotating base, the blackbody cavities comprise a low-temperature blackbody cavity, a normal-temperature blackbody cavity and a high-temperature blackbody cavity, and a platinum resistance temperature sensor is arranged in each blackbody cavity. The utility model discloses a self calibration system can judge by oneself whether the surrounding environment is fit for the calibration to the calibration is more accurate, has more the ageing.
Description
Technical Field
The utility model relates to a marine environment monitoring technology field, in particular to infrared temperature sensor self calibration system of ocean buoy platform.
Background
In the modern marine field, a great deal of data of marine environment is required to be mastered, so that more and more requirements are put on marine observation technology. With the new development of marine observation, many research institutes are more and more concerned about the observation of the skin temperature of seawater. At present, the method for measuring the skin temperature of seawater mainly comprises a contact method and a non-contact method. The seawater skin temperature is measured by the non-contact infrared sensor, and the device has the advantages of simple structure, accurate and objective measured value and convenient maintenance.
In the past, seawater skin temperature measurement is mainly realized by acquiring data through an infrared sensor and uploading the data to a data acquisition unit, but the infrared sensor is influenced by factors such as marine temperature, salinity and illumination for a long time, and the obtained data can gradually generate certain drift and errors. Related infrared temperature measuring systems with certain self-calibration are developed to solve the problem. However, the offshore weather is complex and changeable, the sunlight (atmospheric radiation) is too strong, the water vapor concentration in the atmosphere is too high, and the situations that the buoy platform swings violently due to sea waves and the like are not suitable for self calibration; continued rainy weather results in lower voltage power at the buoy platform, which if calibrated by force will affect the overall power reserve of the buoy.
Too frequent self-calibration of common calibration standard files can also affect the accuracy, performance, and lifetime of black body and infrared probes. Therefore, an unmanned ocean buoy platform is needed to be designed for a long time, and the infrared temperature measurement system can intelligently analyze and judge the surrounding environment through various meteorological hydrological sensors carried by the ocean buoy platform and reasonably perform self calibration.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides an infrared temperature measurement sensor of ocean buoy platform self calibration system to reach and to judge by oneself whether the surrounding environment is fit for the calibration, and the calibration is more accurate, has more ageing purpose.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a self-calibration system of an infrared temperature measurement sensor of an ocean buoy platform comprises a main control system, an electric power system, a self-calibration unit of the infrared temperature measurement sensor, a meteorological hydrological sensor unit and a communication system, wherein the main control system is positioned on the buoy platform, receives signals of the self-calibration unit of the infrared temperature measurement sensor and the meteorological hydrological sensor unit and communicates with a receiving end of a shore station through the communication system, and the electric power system provides electric power support for the units; the infrared temperature measurement sensor self-calibration unit comprises at least three blackbody cavities located around the infrared temperature measurement sensor, the mouths of the blackbody cavities face the infrared temperature measurement sensor, the infrared temperature measurement sensor is installed on the rotating base, the blackbody cavities comprise a low-temperature blackbody cavity, a normal-temperature blackbody cavity and a high-temperature blackbody cavity, and a platinum resistance temperature sensor is arranged in each blackbody cavity.
In the scheme, the heating device is arranged outside the high-temperature blackbody cavity, and the refrigerating device is arranged outside the low-temperature blackbody cavity.
In a further technical scheme, the heating device is a heating resistance wire wound outside the high-temperature blackbody cavity.
In a further technical scheme, the refrigerating device is a refrigerating pipe wound outside the low-temperature blackbody cavity, and circulating cooling water is introduced into the refrigerating pipe.
In the scheme, the diameter of the orifice of the blackbody cavity is not less than 1.4 times of the diameter of the field angle of the infrared temperature measurement sensor, so that the orifice can completely cover the field range of the infrared temperature measurement sensor.
Through the technical scheme, the utility model provides an infrared temperature measurement sensor of ocean buoy platform self calibration system has following beneficial effect:
1. the utility model discloses an adopt meteorological hydrology sensor unit to gather marine environmental parameter, upload to the major control system, judge whether be fit for calibrating, make sensor self calibration become more intelligent.
2. The severe marine environment does not affect the normal work of the equipment, and only the calibration is judged to be not suitable, so that the continuity of the daily environment monitoring of the buoy platform is ensured.
3. The blackbody cavities comprise a high-temperature blackbody cavity, a normal-temperature blackbody cavity and a low-temperature blackbody cavity, so that the calibration is more accurate and the timeliness is better.
4. The diameter of the orifice of the blackbody cavity is not less than 1.4 times of the diameter of the field angle of the infrared temperature measuring sensor, the orifice can completely cover the range of the field angle of the infrared temperature measuring sensor, and the accuracy of a calibration result is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a top view of an ocean buoy platform structure disclosed in an embodiment of the present invention;
fig. 2 is a schematic diagram of a relationship between components of a self-calibration system of an infrared temperature measurement sensor of an ocean buoy platform disclosed in an embodiment of the present invention;
fig. 3 is a top view of a self-calibration unit of the infrared temperature measurement sensor disclosed in the embodiment of the present invention;
fig. 4 is a front view of a self-calibration unit of the infrared temperature measuring sensor disclosed in the embodiment of the present invention;
fig. 5 is a schematic diagram of a working flow of the self-calibration system according to an embodiment of the present invention.
In the figure, 1, a buoy platform; 2. a master control system; 3. an electric power system; 4. the infrared temperature measurement sensor self-calibration unit; 5. a meteorological hydrological sensor unit; 6. a communication system; 7. a receiving end of a shore station; 8. an infrared temperature measuring sensor; 9. rotating the base; 10. a low temperature blackbody cavity; 11. a black body cavity at normal temperature; 12. a high temperature blackbody cavity; 13. a platinum resistance temperature sensor; 14. a heating device; 15. a refrigeration device; 16. a lumen port.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The utility model provides an infrared temperature sensor of ocean buoy platform self calibration system, as shown in FIG. 1, including being located main control system 2, electric power system 3, infrared temperature sensor self calibration unit 4, meteorological hydrology sensor unit 5 and communication system 6 on buoy platform 1. As shown in FIG. 2, the main control system 2 receives signals of the infrared temperature measurement sensor self-calibration unit 4 and the gas-image-hydrological sensor unit 5, and communicates with a shore station receiving end 7 through a communication system 6, and the power system 3 provides power support for the units.
As shown in fig. 3 and 4, the infrared temperature measurement sensor self-calibration unit 4 includes three blackbody cavities located around the infrared temperature measurement sensor 8, the mouths 16 of the blackbody cavities face the infrared temperature measurement sensor 8, the infrared temperature measurement sensor 8 is mounted on the rotating base 9, the rotating base 9 can be driven by a motor to rotate, and the rotating base is a conventional rotating mode and can adopt a selection mode of an existing rotatable camera. The blackbody cavities comprise a low-temperature blackbody cavity 10, a normal-temperature blackbody cavity 11 and a high-temperature blackbody cavity 12, and each blackbody cavity is internally provided with a platinum resistance temperature sensor 13.
The heating device 14 is arranged outside the high-temperature blackbody cavity 12, and the heating device 14 is a heating resistance wire wound outside the high-temperature blackbody cavity 12. The refrigeration device 15 is arranged outside the low-temperature blackbody cavity 10, the refrigeration device is a refrigeration pipe wound outside the low-temperature blackbody cavity 10, and circulating cooling water is introduced into the refrigeration pipe. The number of the black body cavities is not limited to three, and the black body cavities can be increased appropriately, so that the accuracy of data fitting is improved. Meanwhile, the blackbody cavity can be replaced by other blackbody radiation surfaces.
The diameter of the orifice 16 of the blackbody cavity is not less than 1.4 times of the diameter of the field angle of the infrared temperature measuring sensor 8, and the orifice 16 can completely cover the range of the field angle of the infrared temperature measuring sensor 8, so that the measuring accuracy is ensured.
As shown in fig. 5, the working flow of the self-calibration system is as follows:
the meteorological hydrological sensor unit 5 automated inspection surrounding environment data that ocean buoy platform 1 carried on, including temperature, steam concentration, short wave radiation, visibility, wave height, battery voltage isoparametric to upload to major control system 2, form the storage file of fixed format, then major control system 2 transmits the storage file for bank station receiving terminal 7 through communication system. The receiving end 7 of the shore station judges that the external condition is met and starts self-calibration when one of the following three conditions is met:
(1) the data are in accordance with the preset area range and are spaced for more than 3 months from the last self-calibration;
(2) if the infrared temperature measurement sensor 8 is obviously deviated from or obviously inconsistent with the reality in comparison with the temperature values (such as water temperature, air temperature and the like) of other meteorological hydrological sensors;
(3) the shore station receiving end 7 sends a command for allowing the self-calibration work to start, and the electric quantity of the buoy platform 1 is larger than the self-calibration minimum electric quantity set value.
When calibration is started, the heating device 14 and the refrigerating device 15 are used for controlling the temperature of the high-temperature blackbody cavity 12 and the low-temperature blackbody cavity 10, the temperature of the high-temperature blackbody cavity 12 is controlled to be a ten-degree-centigrade temperature point which is about 10 ℃ higher than the current environment temperature, and the temperature of the low-temperature blackbody cavity 10 is controlled to be a ten-degree-centigrade temperature point which is about 10 ℃ lower than the current environment temperature. The platinum resistance temperature sensors 13 are used for respectively measuring the real temperature values T inside the low-temperature black body cavity 10, the normal-temperature black body cavity 12 and the high-temperature black body cavity 12L，TA，THMeanwhile, the rotating base 9 is adjusted to enable the infrared temperature measuring sensors 8 to be respectively aligned to the three blackbody cavities, and the internal temperature values measured by the infrared temperature measuring sensors are respectively T'L，T′A，T′HT 'can be obtained by adjusting the parameter value before the infrared temperature measurement sensor 8 through data fitting'L＝TL，T′A＝TA，T′H＝THAnd replacing the previous parameters with the obtained new parameters and storing the new parameters. Sending the self-calibration completion state information to a main control system for storage, and sending the self-calibration completion state information to a shore station receiving terminal display through a communication systemShown in the figure. The master control system 2 records time after storing the state information, and after a time interval set by a program (the time interval setting needs to be recommended to be 3-6 months according to the local environment condition) or the quayside receiving end sends a calibration instruction to restart self-calibration judgment. And then the infrared temperature measurement sensor 8 continues conventional data acquisition work according to a set program, so that one self-calibration work is completed.
The data fitting method is as follows:
and performing straight line fitting on the data by adopting a common least square method. That is, the slope k and intercept b in y ═ kx + b are determined, and the x component represents the temperature value T'L，T′A，T′ARespectively by x1，x2，x3Represents; the y component represents that the platinum resistance temperature sensors 13 respectively measure three black body cavity temperature values TL，TA，THRespectively by y1，y2，y3And (4) showing.
Or represent the set of experimental data in another way, namely (x)i，yiI is 1, 2, 3), it is necessary to determine the values of k and b so that x is equal toiCalculated to be closest to yi. This gives the fitting equation s ═ y ∑ yi-(kxi+b)]2So that s is minimized and the derivation is
Solving to obtain:
and replacing the original setting parameters by the newly obtained k and b.
In the self-calibration process, the blackbody cavity is moved to align with the probe of the infrared temperature measurement sensor to measure the temperature.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A self-calibration system of an infrared temperature measurement sensor of an ocean buoy platform is characterized by comprising a main control system, an electric power system, a self-calibration unit of the infrared temperature measurement sensor, a meteorological hydrological sensor unit and a communication system, wherein the main control system is positioned on the buoy platform, receives signals of the self-calibration unit of the infrared temperature measurement sensor and the meteorological hydrological sensor unit and communicates with a receiving end of a shore station through the communication system, and the electric power system provides electric power support for the units; the infrared temperature measurement sensor self-calibration unit comprises at least three blackbody cavities located around the infrared temperature measurement sensor, the mouths of the blackbody cavities face the infrared temperature measurement sensor, the infrared temperature measurement sensor is installed on the rotating base, the blackbody cavities comprise a low-temperature blackbody cavity, a normal-temperature blackbody cavity and a high-temperature blackbody cavity, and a platinum resistance temperature sensor is arranged in each blackbody cavity.
2. The self-calibration system of the infrared temperature measurement sensor of the ocean buoy platform as claimed in claim 1, wherein a heating device is arranged outside the high-temperature black cavity, and a cooling device is arranged outside the low-temperature black cavity.
3. The self-calibration system of the infrared temperature measurement sensor of the ocean buoy platform as claimed in claim 2, wherein the heating device is a heating resistance wire wound outside the high-temperature black body cavity.
4. The self-calibration system of the infrared temperature sensor of the ocean buoy platform as claimed in claim 2, wherein the cooling device is a cooling pipe wound outside the low-temperature black body cavity, and cooling water circulates through the cooling pipe.
5. The self-calibration system of the infrared temperature measurement sensor of the ocean buoy platform as claimed in claim 1, wherein the diameter of the orifice of the blackbody cavity is not less than 1.4 times the diameter of the field angle of the infrared temperature measurement sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120093651.5U CN214471336U (en) | 2021-01-14 | 2021-01-14 | Ocean buoy platform infrared temperature measurement sensor self calibration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120093651.5U CN214471336U (en) | 2021-01-14 | 2021-01-14 | Ocean buoy platform infrared temperature measurement sensor self calibration system |
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| CN214471336U true CN214471336U (en) | 2021-10-22 |
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| CN202120093651.5U Active CN214471336U (en) | 2021-01-14 | 2021-01-14 | Ocean buoy platform infrared temperature measurement sensor self calibration system |
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