Method, device, equipment and storage medium for pressure calibration based on temperature

Abstract

The present invention discloses a method and device, equipment and storage medium for pressure calibration based on temperature. Based on a pressure digital measuring instrument, multiple different water pressure points in a seawater environment at a constant temperature are continuously measured to obtain multiple standard water pressures; and simultaneously obtain the first resistance value of a first varistor on a marine detection device and the second resistance value of a second varistor, and the indicated temperature of the seawater environment where the marine detection device is currently located at the constant temperature; according to all the first resistance values, all the second resistance values, the indicated temperature and all the standard water pressures, the pressure calibration coefficient corresponding to the temperature depth sensor is determined, which can improve the accuracy of determining the pressure calibration coefficient, thereby based on the accurately determined pressure calibration coefficient and the seawater pressure actually measured in the actual seawater environment, the pressure error of the marine detection device is accurately detected, thereby performing error evaluation on the marine detection device, so as to improve the successful factory delivery rate or successful use rate of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of ocean seawater detection, and in particular to a method and device, equipment and storage medium for performing pressure calibration based on temperature. Background Art

[0002] One of the main goals of ocean monitoring is to detect marine substances and their changes, and seawater pressure is one of the important parameters of ocean monitoring. By detecting seawater pressure with ocean detection equipment, we can better understand the overall status of the marine environment and provide a reference for the protection of the marine ecological environment.

[0003] Marine testing equipment must be tested for pressure error before leaving the factory or before use. Only when the pressure error is within the qualified range can it be shipped or used. Therefore, how to accurately test the pressure error of marine testing equipment to improve the successful rate of equipment leaving the factory or successful use is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present invention provides a method and device, equipment and storage medium for temperature-based pressure calibration, which can accurately detect the pressure error of marine detection equipment to improve the successful factory delivery rate or successful use rate of the equipment.

[0005] In order to solve the above technical problems, the first aspect of the present invention discloses a method for pressure calibration based on temperature, the method comprising:

[0006] When the seawater environment where the ocean detection device is currently located is kept at a first preset constant temperature, a pressure digital measuring instrument provided on the ocean detection device is used to continuously measure a plurality of different water pressure points in the seawater environment to obtain a plurality of standard water pressures;

[0007] While measuring each of the standard water pressures, obtaining a first resistance value of a first piezoresistor on the ocean detection device at a water pressure point corresponding to the standard water pressure and a second resistance value of a second piezoresistor at a water pressure point corresponding to the standard water pressure;

[0008] Determine a first indication temperature when the constant temperature of the seawater environment where the ocean detection equipment is currently located is at the second preset constant temperature;

[0009] A pressure calibration coefficient corresponding to the temperature-depth sensor is determined according to all of the first resistance values, all of the second resistance values, the first indication temperature, and all of the standard water pressures.

[0010] As an optional implementation manner, in the first aspect of the present invention, determining the pressure calibration coefficient corresponding to the temperature-depth sensor according to all the first resistance values, all the second resistance values, the first indication temperature and all the standard water pressures includes:

[0011] For any of the standard water pressures, calculate the sum of the first resistance value and the second resistance value under the standard water pressure, and calculate the difference in resistance between the first resistance value and the second resistance value under the standard water pressure;

[0012] The pressure calibration coefficient corresponding to the temperature-depth sensor is determined according to all the sum resistance values, all the differential resistance values, the first indication temperature and all the standard water pressures.

[0013] As an optional implementation manner, in the first aspect of the present invention, determining the pressure calibration coefficient corresponding to the temperature depth sensor according to all the sum resistance values, all the difference resistance values, the first indication temperature and all the standard water pressures includes:

[0014] Determine all first pressure calibration coefficients corresponding to the temperature-depth sensor according to all the differential resistance values, the first indication temperature and all the standard water pressures;

[0015] Calculate the first indicated pressure when the seawater environment where the ocean detection equipment is currently located is at the first preset constant temperature according to all the first pressure calibration coefficients and the first temperature-pressure coefficient corresponding to each of the first pressure calibration coefficients;

[0016] Determine all second pressure calibration coefficients corresponding to the temperature depth sensor according to the first indication pressure, all the resistance values ​​and the first indication temperature;

[0017] Based on each of the second pressure calibration coefficients, the second temperature-pressure coefficient corresponding to the second pressure calibration coefficient, all of the differential resistance values, all of the sum resistance values ​​and all of the standard water pressures, a pressure calibration coefficient corresponding to the temperature-depth sensor is determined.

[0018] As an optional implementation, in the first aspect of the present invention, the determining the pressure calibration coefficient corresponding to the temperature-depth sensor based on each of the second pressure calibration coefficients, the second temperature-pressure coefficient corresponding to the second pressure calibration coefficient, all the differential resistance values, all the sum resistance values ​​and all the standard water pressures includes:

[0019] Based on each of the second pressure calibration coefficients and the second temperature-pressure coefficient corresponding to the second pressure calibration coefficient, determine the second indication temperature corresponding to the temperature-depth sensor when the constant temperature of the seawater environment where the ocean detection equipment is currently located is at the first preset constant temperature;

[0020] Determine all third pressure calibration coefficients corresponding to the temperature-depth sensor according to the second indication temperature, all the differential resistance values ​​and all the standard water pressures;

[0021] Calculate the second indicated pressure when the seawater environment where the ocean detection equipment is currently located is at the first preset constant temperature according to all the third pressure calibration coefficients and the third temperature-pressure coefficient corresponding to each of the third pressure calibration coefficients;

[0022] Determine all fourth pressure calibration coefficients corresponding to the temperature-depth sensor according to the second indicated pressure, all the sum resistance values ​​and the first indicated temperature;

[0023] All the third pressure calibration coefficients and all the fourth pressure calibration coefficients are determined as the pressure calibration coefficients of the temperature-depth sensor.

[0024] As an optional implementation, in the first aspect of the present invention, the determining of the first indicated temperature when the constant temperature of the seawater environment where the ocean detection equipment is currently located is at the second preset constant temperature includes:

[0025] Detecting the temperature resistance of the temperature depth sensor when the seawater environment where the ocean detection equipment is currently located is at the second preset constant temperature;

[0026] Based on a predetermined temperature detection formula, a first indication temperature corresponding to the temperature resistance value is calculated.

[0027] As an optional embodiment, in the first aspect of the present invention, the method further comprises:

[0028] Based on the temperature measuring instrument provided on the ocean detection device, the temperature of the calibration seawater environment where the ocean detection device is currently located is continuously measured to obtain a plurality of calibration temperatures, wherein all the calibration temperatures increase in sequence, and the temperature difference between each two adjacent calibration temperatures is equal;

[0029] At the same time, sequentially obtain the calibrated resistance value of the temperature-depth sensor corresponding to each of the calibration temperatures when the temperature of the seawater environment is each of the calibration temperatures;

[0030] According to all the calibration temperatures, multi-step calibration is performed on all the calibration resistance values ​​to obtain multiple temperature calibration coefficients corresponding to the ocean detection equipment;

[0031] Loading all the temperature calibration coefficients onto the temperature detection formula corresponding to the ocean detection equipment to obtain the temperature detection formula;

[0032] ;

[0033] Where, T is the calibration temperature, R T is the calibrated resistance value corresponding to the calibrated temperature, and a0, a1, a2, and a3 are polynomial fitting parameters respectively;

[0034] The number of all the calibrated temperatures and the number of all the calibrated resistance values ​​are equal to and greater than or equal to the order.

[0035] As an optional embodiment, in the first aspect of the present invention, the method further comprises:

[0036] Measuring the target pressure of the ocean detection device when it is kept at a constant temperature in an actual seawater environment based on the pressure digital measuring instrument, and collecting the first target resistance value of the first varistor on the ocean detection device when it is kept at a constant temperature in the actual seawater environment and the second target resistance value of the second varistor when it is kept at a constant temperature in the actual seawater environment;

[0037] Determine the target indication temperature of the ocean detection equipment when the actual seawater environment is kept at a certain constant temperature;

[0038] Determine the target indication pressure of the marine detection equipment when the temperature is constant in the actual seawater environment at the constant temperature according to all pressure calibration parameters, all the first target resistance values, all the second target resistance values ​​and the target indication temperature;

[0039] Calculating a pressure difference between the target indicated pressure and the target pressure, and comparing the pressure difference with a preset pressure difference to obtain a pressure comparison result;

[0040] According to the pressure comparison result, an error evaluation is performed on the ocean detection equipment to obtain an error evaluation result, and the error evaluation result serves as a basis for the release or qualification of the ocean detection equipment.

[0041] A second aspect of the present invention discloses a device for calibrating pressure based on temperature, the device comprising:

[0042] A measuring module, used for continuously measuring a plurality of different water pressure points in the seawater environment when the seawater environment where the ocean detection device is currently located is at a first preset constant temperature based on a pressure digital measuring instrument provided on the ocean detection device to obtain a plurality of standard water pressures;

[0043] An acquisition module, configured to acquire, while measuring each of the standard water pressures, a first resistance value of a first piezoresistor on the ocean detection device at a water pressure point corresponding to the standard water pressure and a second resistance value of a second piezoresistor at a water pressure point corresponding to the standard water pressure;

[0044] A determination module, used to determine a first indication temperature when the seawater environment where the ocean detection equipment is currently located is at a second preset constant temperature;

[0045] The determination module is further used to determine the pressure calibration coefficient corresponding to the temperature-depth sensor according to all the first resistance values, all the second resistance values, the first indication temperature and all the standard water pressures.

[0046] As an optional implementation, in the second aspect of the present invention, the specific manner in which the determination module determines the pressure calibration coefficient corresponding to the temperature depth sensor according to all the first resistance values, all the second resistance values, the first indication temperature and all the standard water pressures includes:

[0047] For any of the standard water pressures, calculate the sum of the first resistance value and the second resistance value under the standard water pressure, and calculate the difference in resistance between the first resistance value and the second resistance value under the standard water pressure;

[0048] The pressure calibration coefficient corresponding to the temperature-depth sensor is determined according to all the sum resistance values, all the differential resistance values, the first indication temperature and all the standard water pressures.

[0049] As an optional implementation, in the second aspect of the present invention, the specific manner in which the determination module determines the pressure calibration coefficient corresponding to the temperature depth sensor according to all the sum resistance values, all the difference resistance values, the first indication temperature and all the standard water pressures includes:

[0050] Determine all first pressure calibration coefficients corresponding to the temperature-depth sensor according to all the differential resistance values, the first indication temperature and all the standard water pressures;

[0051] Calculate the first indicated pressure when the seawater environment where the ocean detection equipment is currently located is at the first preset constant temperature according to all the first pressure calibration coefficients and the first temperature-pressure coefficient corresponding to each of the first pressure calibration coefficients;

[0052] Determine all second pressure calibration coefficients corresponding to the temperature depth sensor according to the first indication pressure, all the resistance values ​​and the first indication temperature;

[0053] Based on each of the second pressure calibration coefficients, the second temperature-pressure coefficient corresponding to the second pressure calibration coefficient, all of the differential resistance values, all of the sum resistance values ​​and all of the standard water pressures, the pressure calibration coefficient corresponding to the temperature-depth sensor is determined.

[0054] As an optional implementation, in the second aspect of the present invention, the specific manner in which the determination module determines the pressure calibration coefficient corresponding to the temperature depth sensor based on each of the second pressure calibration coefficients, the second temperature and pressure coefficient corresponding to the second pressure calibration coefficient, all the differential resistance values, all the sum resistance values, and all the standard water pressures includes:

[0055] Based on each of the second pressure calibration coefficients and the second temperature-pressure coefficient corresponding to the second pressure calibration coefficient, determine the second indication temperature corresponding to the temperature-depth sensor when the constant temperature of the seawater environment where the ocean detection equipment is currently located is at the first preset constant temperature;

[0056] Determine all third pressure calibration coefficients corresponding to the temperature-depth sensor according to the second indication temperature, all the differential resistance values ​​and all the standard water pressures;

[0057] Calculate the second indicated pressure when the seawater environment where the ocean detection equipment is currently located is at the first preset constant temperature according to all the third pressure calibration coefficients and the third temperature-pressure coefficient corresponding to each of the third pressure calibration coefficients;

[0058] Determine all fourth pressure calibration coefficients corresponding to the temperature-depth sensor according to the second indicated pressure, all the sum resistance values ​​and the first indicated temperature;

[0059] All the third pressure calibration coefficients and all the fourth pressure calibration coefficients are determined as the pressure calibration coefficients of the temperature-depth sensor.

[0060] As an optional implementation, in the second aspect of the present invention, the specific manner in which the determination module determines the first indication temperature when the constant temperature of the seawater environment where the ocean detection equipment is currently located is at the second preset constant temperature includes:

[0061] Detecting the temperature resistance of the temperature depth sensor when the seawater environment where the ocean detection equipment is currently located is at the second preset constant temperature;

[0062] Based on a predetermined temperature detection formula, a first indication temperature corresponding to the temperature resistance value is calculated.

[0063] As an optional implementation, in the second aspect of the present invention, the device further includes:

[0064] The measuring module is further used to continuously measure the temperature of the calibration seawater environment where the ocean detection device is currently located based on the temperature measuring instrument arranged on the ocean detection device, so as to obtain a plurality of calibration temperatures, wherein all the calibration temperatures increase in sequence, and the temperature difference between each two adjacent calibration temperatures is equal;

[0065] The acquisition module is also used to simultaneously and sequentially acquire the calibrated resistance value of the temperature-depth sensor corresponding to each of the calibration temperatures when the temperature of the seawater environment is each of the calibration temperatures;

[0066] A calibration module, used to perform multi-step calibration on all the calibration resistance values ​​according to all the calibration temperatures, so as to obtain a plurality of temperature calibration coefficients corresponding to the ocean detection equipment;

[0067] A loading module, used for loading all the temperature calibration coefficients onto the temperature detection formula corresponding to the ocean detection equipment to obtain the temperature detection formula;

[0068] ;

[0069] Where, T is the calibration temperature, R T is the calibrated resistance value corresponding to the calibrated temperature, and a0, a1, a2, and a3 are polynomial fitting parameters respectively;

[0070] The number of all the calibrated temperatures and the number of all the calibrated resistance values ​​are equal to and greater than or equal to the order.

[0071] As an optional implementation, in the second aspect of the present invention, the device further includes:

[0072] The measuring module is also used to measure the target pressure of the marine detection equipment when the temperature is kept constant at a certain constant temperature in an actual seawater environment based on the pressure digital measuring instrument;

[0073] The acquisition module is also used to collect a first target resistance value of the first varistor on the marine detection device when the temperature is kept constant at a certain constant temperature in the actual seawater environment and a second target resistance value of the second varistor when the temperature is kept constant at a certain constant temperature in the actual seawater environment;

[0074] The determination module is further used to determine the target indication temperature of the ocean detection equipment when the actual seawater environment is kept at a certain constant temperature;

[0075] The determination module is further used to determine the target indication pressure of the marine detection equipment when the temperature is constant at the certain constant temperature in the actual seawater environment according to all pressure calibration parameters, all the first target resistance values, all the second target resistance values ​​and the target indication temperature;

[0076] A calculation module, used for calculating the pressure difference between the target indicated pressure and the target pressure, and obtaining a pressure comparison result by comparing the pressure difference with a preset pressure difference;

[0077] An evaluation module is used to perform error evaluation on the ocean detection equipment according to the pressure comparison result to obtain an error evaluation result, and the error evaluation result is used as a basis for the release or qualification of the ocean detection equipment.

[0078] The third aspect of the present invention discloses an ocean detection device, which is used to execute part or all of the steps in any one of the temperature-based pressure calibration methods disclosed in the first aspect of the present invention.

[0079] A fourth aspect of the present invention discloses an ocean detection device, the ocean detection device comprising:

[0080] A memory storing executable program code;

[0081] a processor coupled to the memory;

[0082] The processor calls the executable program code stored in the memory to execute part or all of the steps in any one of the temperature-based pressure calibration methods disclosed in the first aspect of the present invention.

[0083] The fifth aspect of the present invention discloses a computer storage medium, which stores computer instructions. When the computer instructions are called, they are used to execute part or all of the steps in any one of the temperature-based pressure calibration methods disclosed in the first aspect of the present invention.

[0084] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0085] In an embodiment of the present invention, when the seawater environment where the ocean detection equipment is currently located is at a first preset constant temperature, a plurality of different water pressure points in the seawater environment are continuously measured based on a pressure digital measuring instrument provided on the ocean detection equipment to obtain a plurality of standard water pressures; while measuring each standard water pressure, a first resistance value of a first varistor and a second resistance value of a second varistor on the ocean detection equipment are obtained; the first indication temperature when the seawater environment where the ocean detection equipment is currently located is at a second preset constant temperature is determined; the pressure calibration coefficient corresponding to the temperature depth sensor is determined based on all first resistance values, all second resistance values, the first indication temperature and all standard water pressures, so as to improve the accuracy of determining the pressure calibration coefficient, thereby accurately detecting the pressure error of the ocean detection equipment based on the accurately determined pressure calibration coefficient and the seawater pressure actually measured in the actual seawater environment, thereby performing error evaluation on the ocean detection equipment to improve the successful factory delivery rate or successful use rate of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0087] Figure 1 It is a flow chart of a method for performing pressure calibration based on temperature disclosed in an embodiment of the present invention;

[0088] Figure 2 This is a flow chart of a device for temperature-based pressure calibration disclosed in an embodiment of the present invention.

[0089] Figure 3 is a schematic structural diagram of another device for performing pressure calibration based on temperature disclosed in an embodiment of the present invention;

[0090] Figure 4 It is a structural schematic diagram of a marine detection device disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0091] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0092] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, device, product or end including a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units inherent to these processes, methods, products or ends.

[0093] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0094] The present invention discloses a method and device, equipment and storage medium for pressure calibration based on temperature, which continuously measures multiple different water pressure points in a seawater environment based on a pressure digital measuring instrument to obtain multiple standard water pressures; and simultaneously obtains the first resistance value of the first varistor on the ocean detection device and the second resistance value of the second varistor, and the indicated temperature of the seawater environment where the ocean detection device is currently located at a second preset constant temperature; according to all the first resistance values, all the second resistance values, the indicated temperature and all the standard water pressures, the pressure calibration coefficient corresponding to the temperature depth sensor is determined, which can improve the accuracy of the pressure calibration coefficient, thereby accurately detecting the pressure error of the ocean detection device based on the accurately determined pressure calibration coefficient and the seawater pressure actually measured in the actual seawater environment, thereby performing error evaluation on the ocean detection device to improve the successful factory rate or successful use rate of the device. The following are detailed descriptions.

[0095] Embodiment 1

[0096] See also Figure 1 , Figure 1 is a flow chart of a method for temperature-based pressure calibration disclosed in an embodiment of the present invention. Figure 1 The described method can be applied to a device for temperature-based pressure calibration, which may include one of an ocean detection device, an ocean detection server (including a local server or a cloud server), an ocean detection system, and an ocean detection platform. Figure 1 As shown, the method for temperature-based pressure calibration may include the following operations:

[0097] 101. When the seawater environment where the ocean detection equipment is currently located is kept at a first preset constant temperature, a pressure digital measuring instrument provided on the ocean detection equipment is used to continuously measure a plurality of different water pressure points in the seawater environment to obtain a plurality of standard water pressures.

[0098] 102. While measuring each standard water pressure, obtain a first resistance value of a first piezoresistor on the ocean detection device at a water pressure point corresponding to the standard water pressure and a second resistance value of a second piezoresistor at a water pressure point corresponding to the standard water pressure.

[0099] In the embodiment of the present invention, the first piezoresistor and the second piezoresistor may be integrated on the temperature-depth sensor, or may be independent of the temperature-depth sensor.

[0100] 103. Determine the first indication temperature when the seawater environment where the ocean detection equipment is currently located is at a second preset constant temperature; determine the pressure calibration coefficient corresponding to the temperature depth sensor according to all first resistance values, all second resistance values, the first indication temperature and all standard water pressures.

[0101] In the embodiment of the present invention, the number of the first preset constant temperature can be one or more, and the number of the second preset constant temperature can be one or more. Further, the first preset constant temperature and the second preset constant temperature can be completely the same, completely different, partially the same, or partially different.

[0102] In the embodiment of the present invention, optionally, by obtaining multiple standard water pressures, all first resistance values, all second resistance values ​​and the first indication temperature corresponding to the first preset constant temperature, the pressure calibration coefficient is determined, which is conducive to further improving the accuracy and reliability of the pressure calibration coefficient, thereby further improving the accuracy and reliability of the calibration of the marine detection equipment. For example: when the first preset constant temperature and the second preset constant temperature are multiple and exactly the same, the first preset constant temperature and the second preset constant temperature of the seawater environment can be 0°C, 10°C, 20°C, 30°C, 40°C, and for each first preset constant temperature, the multiple standard water pressures under the first preset constant temperature can be 0MPa, 1MPa, 2MPa, 3MPa, 4MPa, 5MPa, 6MPa, 7MPa, 8MPa, 9MPa, 10MPa. Among them, the first preset constant temperature and the second preset constant temperature are obtained by continuously heating the seawater environment, and the multiple standard water pressures are obtained by placing the marine detection equipment at different depths in the seawater environment.

[0103] It can be seen that implementation Figure 1 The described method for temperature-based pressure calibration can continuously measure multiple different water pressure points in a seawater environment at a first preset constant temperature based on a pressure digital measuring instrument to obtain multiple standard water pressures; and simultaneously obtain the first resistance value of the first varistor on the ocean detection device and the second resistance value of the second varistor, and the indicated temperature when the seawater environment where the ocean detection device is currently located is at a second preset constant temperature; determine the pressure calibration coefficient corresponding to the temperature depth sensor based on all first resistance values, all second resistance values, the indicated temperature and all standard water pressures, which can improve the accuracy of determining the pressure calibration coefficient, thereby accurately detecting the pressure error of the ocean detection equipment based on the accurately determined pressure calibration coefficient and the seawater pressure actually measured in the actual seawater environment, thereby performing error evaluation on the ocean detection equipment to improve the successful factory delivery rate or successful use rate of the equipment.

[0104] In the embodiment of the present invention, optionally, determining a pressure calibration coefficient corresponding to the temperature-depth sensor according to all first resistance values, all second resistance values, the first indication temperature, and all standard water pressures includes:

[0105] For any standard water pressure, the sum of the first resistance value and the second resistance value under the standard water pressure is calculated, and the difference of the first resistance value and the second resistance value under the standard water pressure is calculated;

[0106] The pressure calibration coefficient corresponding to the temperature-depth sensor is determined according to all the sum resistance values, all the difference resistance values, the first indication temperature and all the standard water pressures.

[0107] In the embodiment of the present invention, optionally, determining the pressure calibration coefficient corresponding to the temperature-depth sensor according to all the sum resistance values, all the difference resistance values, the first indication temperature and all the standard water pressures includes:

[0108] Determine all first pressure calibration coefficients corresponding to the temperature-depth sensor according to all differential resistance values, the first indication temperature and all standard water pressures;

[0109] Calculate the first indicated pressure when the seawater environment where the ocean detection equipment is currently located is at a constant temperature at a first preset constant temperature according to all the first pressure calibration coefficients and the first temperature-pressure coefficient corresponding to each first pressure calibration coefficient;

[0110] Determine all second pressure calibration coefficients corresponding to the temperature depth sensor according to the first indicated pressure, all resistance values ​​and the first indicated temperature;

[0111] Based on each second pressure calibration coefficient, the second temperature-pressure coefficient corresponding to the second pressure calibration coefficient, all differential resistance values, all sum resistance values ​​and all standard water pressures, a pressure calibration coefficient corresponding to the temperature-depth sensor is determined.

[0112] In the embodiment of the present invention, optionally, for any first preset constant temperature, multiple linear regression is performed with all differential resistance values ​​and the first indication temperature as variables and all standard water pressures as dependent variables to obtain all first pressure calibration coefficients.

[0113] In the embodiment of the present invention, optionally, for any first preset constant temperature, a multivariate linear regression is performed with the first indicated pressure, all and resistance values ​​as variables and the first indicated temperature as the dependent variable to obtain the second pressure calibration coefficient.

[0114] In an embodiment of the present invention, optionally, the first temperature-pressure coefficient corresponding to each first pressure standard coefficient is determined by one of all differential resistance values ​​and the first indication temperature, and the second temperature-pressure coefficient corresponding to each second pressure standard coefficient is determined by one of all sum resistance values ​​and the first indication pressure.

[0115] It can be seen that the embodiment of the present invention first performs a multivariate linear regression based on the difference between the two varistors, the indicated temperature of the temperature-depth sensor and the pressure of the pressure measuring instrument, and then performs a multivariate linear regression again based on the pressure indication obtained by the multivariate linear regression, the sum of the two varistors, and the indicated temperature of the temperature-depth sensor, thereby determining the final pressure calibration coefficient of the temperature-depth sensor based on the basic pressure calibration coefficient obtained by the two linear regressions, thereby improving the calibration accuracy and reliability of the pressure calibration coefficient, which is beneficial to further improve the pressure error calibration of marine detection equipment.

[0116] In the embodiment of the present invention, optionally, determining the pressure calibration coefficient corresponding to the temperature-depth sensor based on each second pressure calibration coefficient, the second temperature-pressure coefficient corresponding to the second pressure calibration coefficient, all differential resistance values, all sum resistance values, and all standard water pressures includes:

[0117] Based on each second pressure calibration coefficient and the second temperature-pressure coefficient corresponding to the second pressure calibration coefficient, determine the second indication temperature corresponding to the temperature-depth sensor when the seawater environment where the ocean detection equipment is currently located is kept at a first preset constant temperature;

[0118] Determine all third pressure calibration coefficients corresponding to the temperature-depth sensor according to the second indicated temperature, all differential resistance values ​​and all standard water pressures;

[0119] Calculate the second indication pressure of the current seawater environment where the ocean detection equipment is located at a constant temperature at a first preset constant temperature according to all the third pressure calibration coefficients and the third temperature-pressure coefficient corresponding to each third pressure calibration coefficient;

[0120] Determine all fourth pressure calibration coefficients corresponding to the temperature depth sensor according to the second indicated pressure, all resistance values ​​and the first indicated temperature;

[0121] All third pressure calibration coefficients and all fourth pressure calibration coefficients are determined as pressure calibration coefficients of the temperature-depth sensor.

[0122] In an embodiment of the present invention, optionally, in an embodiment of the present invention, optionally, for any first preset constant temperature, a multivariate linear regression is performed with all differential resistance values ​​and the second indication temperature as variables and all standard water pressures as dependent variables to obtain all third pressure calibration coefficients.

[0123] In the embodiment of the present invention, optionally, for any first preset constant temperature, a multivariate linear regression is performed with the second indicated pressure, all and resistance values ​​as variables and the first indicated temperature as the dependent variable to obtain a fourth pressure calibration coefficient.

[0124] In the embodiment of the present invention, optionally, the third temperature-pressure coefficient corresponding to each third pressure standard coefficient is determined by one of the differential resistance values ​​among all the differential resistance values ​​and the second indication temperature.

[0125] It can be seen that the embodiment of the present invention performs a multivariate linear regression again on the temperature indication obtained by the two multivariate linear regressions, the difference between the two varistors, and the pressure of the pressure measuring instrument, and then performs a multivariate linear regression again on the pressure indication obtained by this multivariate linear regression, the sum of the two varistors, and the indication temperature of the temperature depth sensor, so as to determine the final pressure calibration coefficient of the temperature depth sensor based on the fourth linear regression, which can improve the calibration accuracy and reliability of the pressure calibration coefficient, and thus help to further improve the pressure error calibration of marine detection equipment.

[0126] In an optional embodiment, the method may further include the following steps:

[0127] For any standard water pressure, calculate the average resistance of the first resistance value and the second resistance value under the standard water pressure;

[0128] According to all standard water pressures, calculate the average standard water pressure between every two adjacent standard water pressures;

[0129] For any standard water pressure mean, calculate the target resistance and target difference resistance between two resistance means corresponding to the standard water pressure mean;

[0130] The target pressure calibration coefficient corresponding to the temperature-depth sensor is determined according to all target and resistance values, all target differential resistance values, the first indication temperature and the average values ​​of all standard water pressures.

[0131] Take three standard water pressures A1, A2, and A3 as examples, the first resistance and the second resistance corresponding to A1, A2, and A3 are R11, R21, R12, R22, R13, and R23, respectively. At this time, the average standard water pressure of A1 and A2 is A12, the average standard water pressure of A2 and A3 is A23, and the average resistance of R11 and R21 is R1, the average resistance of R12 and R22 is R2, and the average resistance of R13 and R23 is R3. At this time, the two average resistances corresponding to the standard water pressure average A12 are R1 and R2, and the two average resistances corresponding to the standard water pressure average A23 are R2 and R3. Then, the target sum resistance R120 and the target difference resistance R121 of R1 and R2 are calculated respectively, and the target sum resistance R230 and the target difference resistance R231 of R2 and R3 are calculated respectively.

[0132] In this optional embodiment, optionally, determining the target pressure calibration coefficient corresponding to the temperature depth sensor according to all target and resistance values, all target differential resistance values, the first indication temperature and all standard water pressure averages includes:

[0133] Determine all first target pressure calibration coefficients corresponding to the temperature-depth sensor according to all target differential resistance values, the first indication temperature and the average values ​​of all standard water pressures;

[0134] Calculate the first target indication pressure when the seawater environment where the ocean detection equipment is currently located is at a constant temperature at a first preset constant temperature according to all the first target pressure calibration coefficients and the first target temperature-pressure coefficient corresponding to each first target pressure calibration coefficient;

[0135] Determine all second target pressure calibration coefficients corresponding to the temperature depth sensor according to the first target indication pressure, all target and resistance values ​​and the first indication temperature;

[0136] Based on each second target pressure calibration coefficient, the second target temperature-pressure coefficient corresponding to the second target pressure calibration coefficient, all target differential resistance values, all target and resistance values, and all standard water pressure averages, a target pressure calibration coefficient corresponding to the temperature-depth sensor is determined.

[0137] In this optional embodiment, optionally, based on each second target pressure calibration coefficient, the second target temperature and pressure coefficient corresponding to the second target pressure calibration coefficient, all target differential resistance values, all target and resistance values, and all standard water pressure averages, determining the target pressure calibration coefficient corresponding to the temperature and depth sensor includes:

[0138] Based on each second target pressure calibration coefficient and the second target temperature-pressure coefficient corresponding to the second target pressure calibration coefficient, determine the second target indication temperature corresponding to the temperature-depth sensor when the seawater environment where the ocean detection equipment is currently located is kept at a first preset constant temperature;

[0139] Determine all third target pressure calibration coefficients corresponding to the temperature-depth sensor according to the second target indication temperature, all target differential resistance values ​​and all standard water pressure averages;

[0140] According to all the third target pressure calibration coefficients and the third target temperature-pressure coefficient corresponding to each third target pressure calibration coefficient, calculate the second target indication pressure when the seawater environment where the ocean detection equipment is currently located is at a constant temperature at a first preset constant temperature;

[0141] Determine all fourth target pressure calibration coefficients corresponding to the temperature depth sensor according to the second target indication pressure, all target and resistance values ​​and the first indication temperature;

[0142] Performing correction operations on all third pressure calibration coefficients based on all third target pressure calibration coefficients to obtain all corrected third pressure calibration coefficients, and performing correction operations on all fourth pressure calibration coefficients based on all fourth target pressure calibration coefficients to obtain all corrected fourth pressure calibration coefficients;

[0143] Determine all the corrected third pressure calibration coefficients and all the corrected fourth pressure calibration coefficients as the pressure calibration coefficients of the temperature-depth sensor.

[0144] In the embodiment of the present invention, optionally, for any first preset constant temperature, a multivariate linear regression is performed with all target differential resistance values ​​and the first indication temperature as variables and the mean of all standard water pressures as the dependent variable to obtain all first target pressure calibration coefficients.

[0145] In the embodiment of the present invention, optionally, for any first preset constant temperature, a multivariate linear regression is performed with the first target indication pressure, all targets and resistance values ​​as variables and the first indication temperature as the dependent variable to obtain the second target pressure calibration coefficient.

[0146] In the embodiment of the present invention, optionally, for any first preset constant temperature, a multivariate linear regression is performed with the first target indication pressure, all targets and resistance values ​​as variables and the first indication temperature as the dependent variable to obtain the second target pressure calibration coefficient.

[0147] In an embodiment of the present invention, optionally, in an embodiment of the present invention, optionally, for any first preset constant temperature, with all target differential resistance values ​​and second target indication temperature as variables and the mean of all standard water pressures as the dependent variable, a multivariate linear regression is performed to obtain all third target pressure calibration coefficients.

[0148] In the embodiment of the present invention, optionally, for any first preset constant temperature, a multivariate linear regression is performed with the second target indication pressure, all targets and resistance values ​​as variables and the first indication temperature as the dependent variable to obtain a fourth target pressure calibration coefficient.

[0149] In an embodiment of the present invention, optionally, the first target temperature-pressure coefficient corresponding to each first target pressure standard coefficient is determined by one of all target differential resistance values ​​and the first indication temperature, the second target temperature-pressure coefficient corresponding to each second target pressure standard coefficient is determined by one of all target differential resistance values ​​and the first target indication pressure, and the third target temperature-pressure coefficient corresponding to each third target pressure standard coefficient is determined by one of all target differential resistance values ​​and the second target indication temperature.

[0150] In the embodiment of the present invention, optionally, each third target pressure calibration coefficient has a corresponding third pressure calibration coefficient, and the average of the third target pressure calibration coefficient and the third pressure calibration coefficient can be taken to complete the correction; each fourth target pressure calibration coefficient has a corresponding fourth pressure calibration coefficient, and the average of the fourth target pressure calibration coefficient and the fourth pressure calibration coefficient can be taken as the required fourth pressure calibration coefficient to complete the correction.

[0151] It can be seen that the embodiment of the present invention calculates the average of the standard water pressures for all standard water pressures in pairs, and calculates the average of the first resistance and the second resistance under each standard water pressure, and performs multivariate linear regression on the distribution of independent variables and dependent variables from different angles using the difference resistance value of all the average values ​​of each standard water pressure and its corresponding pairwise average resistance values, the sum resistance value, the first indication temperature and the average values ​​of all standard water pressures to obtain another pressure calibration coefficient, and corrects the pressure calibration coefficient obtained above based on the other pressure calibration coefficient, which can further improve the accuracy and reliability of determining the pressure calibration coefficient of the temperature depth sensor, and thus help to further improve the pressure error calibration of marine detection equipment.

[0152] In the embodiment of the present invention, optionally, determining the first indicated temperature when the constant temperature of the seawater environment where the ocean detection equipment is currently located is at a second preset constant temperature includes:

[0153] The temperature resistance of the temperature depth sensor detects the temperature resistance value of the seawater environment where the ocean detection equipment is currently located when the temperature is constant at a second preset constant temperature;

[0154] Based on a predetermined temperature detection formula, a first indication temperature corresponding to the temperature resistance value is calculated.

[0155] In this optional embodiment, the method may further include:

[0156] Based on the temperature measuring instrument arranged on the ocean detection equipment, the temperature of the calibration seawater environment where the ocean detection equipment is currently located is continuously measured to obtain multiple calibration temperatures, all of which increase in sequence, and the temperature difference between each two adjacent calibration temperatures is equal;

[0157] At the same time, the calibrated resistance value of the temperature-depth sensor corresponding to each calibrated temperature in the seawater environment is obtained in sequence;

[0158] According to all calibration temperatures, all calibration resistance values ​​are calibrated in multiple stages to obtain multiple temperature calibration coefficients corresponding to the marine detection equipment;

[0159] Load all temperature calibration coefficients onto the temperature detection formula corresponding to the ocean detection equipment to obtain the temperature detection formula;

[0160] ;

[0161] Where, T is the calibration temperature, R T is the calibrated resistance corresponding to the calibrated temperature, a0, a1, a2, and a3 are polynomial fitting parameters respectively;

[0162] The number of all calibrated temperatures and the number of all calibrated resistance values ​​are equal to and greater than or equal to the order.

[0163] In the embodiment of the present invention, the temperature difference between each two adjacent calibration temperatures can be determined based on one or more factors including the type of ocean temperature detection equipment, the current altitude, and the constant temperature of the space where the seawater environment is located. For example, if the type indicates that the temperature detection sensitivity requirement is higher than the preset sensitivity requirement or the current altitude is higher than the preset sea wave or the constant temperature of the space is less than or equal to the preset constant temperature, the temperature difference can be 4°C. If the type indicates that the temperature detection sensitivity requirement is lower than the preset sensitivity requirement and / or the current altitude is lower than the preset sea wave and / or the constant temperature of the space is greater than the preset constant temperature, the temperature difference can be 10°C. Optionally, the settings of all calibration temperatures can be the same as or different from the multiple second preset constant temperatures.

[0164] It can be seen that this optional embodiment continuously measures the temperature of the calibration seawater environment where the ocean detection equipment is currently located based on a temperature measuring instrument arranged on the ocean detection equipment, thereby obtaining multiple calibration temperatures that increase successively, and the temperature difference between each adjacent calibration temperature is equal; at the same time, the calibration resistance values ​​corresponding to the temperature and depth sensors on the ocean detection equipment when the temperature of the seawater environment is each calibration temperature are obtained in turn; according to all calibration temperatures, all calibration resistance values ​​are calibrated in multiple stages to obtain multiple temperature calibration coefficients corresponding to the temperature and depth sensors, which can improve the accuracy and reliability of determining the temperature calibration coefficients so that they can be loaded on the ocean detection equipment to obtain accurate and reliable temperature indications, and then the pressure error of the ocean detection equipment is accurately detected based on the accurate and reliable temperature indications, thereby performing error evaluation on the ocean detection equipment to improve the successful factory delivery rate or successful use rate of the equipment.

[0165] In an optional embodiment, a temperature measuring instrument provided on the ocean detection device continuously measures the temperature of the calibration seawater environment where the ocean detection device is currently located to obtain multiple calibration temperatures, including:

[0166] The temperature of the calibration seawater environment where the marine detection equipment is currently located is increased, and the current temperature increase of the calibration seawater environment is monitored;

[0167] Determine whether the current temperature rise of the calibration seawater environment indicates that a predetermined current temperature rise stop condition is satisfied, and when the determination result is yes, stop heating the calibration seawater environment;

[0168] A constant temperature operation is performed on the calibration seawater environment to obtain a first calibration temperature, and the above-mentioned heating of the calibration seawater environment where the ocean detection equipment is currently located is re-executed, and the current heating situation of the calibration seawater environment is monitored to determine whether the current heating situation of the calibration seawater environment indicates that a predetermined current stop heating condition is satisfied. When the judgment result is yes, the heating of the calibration seawater environment is stopped; a constant temperature operation is performed on the calibration seawater environment to obtain a first calibration temperature operation until multiple calibration temperatures are obtained, wherein the current stop heating condition corresponding to each calibration temperature is different.

[0169] In this optional embodiment, optionally, when it is determined that the current stop heating condition is not met, the calibration seawater environment continues to be heated until the corresponding current stop heating condition is met, and the calibration seawater environment corresponding to the current stop heating condition is stopped from being heated.

[0170] It can be seen that this optional embodiment can improve the accuracy and reliability of determining the required calibration temperature by repeatedly heating and maintaining a constant temperature of the seawater environment where the marine detection equipment is located, and each subsequent calibration temperature determination process uses the previous calibration temperature as the starting temperature until multiple calibration temperatures are obtained, which is beneficial to improving the efficiency and accuracy of obtaining the corresponding calibration temperature, and further beneficial to improving the calibration accuracy and reliability of the temperature calibration coefficient of the marine detection equipment.

[0171] In another optional embodiment, the method may further include the following steps:

[0172] Obtaining the amount of seawater of the calibration seawater environment and the heating power of the seawater heating equipment corresponding to the calibration seawater environment;

[0173] For the first calibration temperature, based on the starting temperature of the calibration seawater environment measured by the temperature measuring instrument, and based on the starting temperature of the calibration seawater environment, the amount of seawater in the calibration seawater environment and the heating power of the seawater heating device, the current stop heating condition corresponding to the calibration temperature is determined, wherein the first calibration temperature is the lowest calibration temperature among all calibration temperatures;

[0174] For temperatures other than the first calibration temperature, the current temperature of the calibration seawater environment is measured by a temperature measuring instrument, and the heating rate of the calibration seawater environment corresponding to the previous calibration temperature and the number of all calibration temperatures that have been obtained are determined; as well as the current stop heating condition corresponding to the calibration temperature is determined based on the current temperature of the calibration seawater environment, the amount of seawater in the calibration seawater environment, the heating power of the seawater heating equipment, the heating rate of the calibration seawater environment and the number of all calibration temperatures that have been obtained.

[0175] In this optional embodiment, under the same other conditions, seawater heating devices with different heating powers have different corresponding heating speeds. The seawater heating device can be arranged inside or outside the calibrated seawater environment, as long as it can heat the seawater.

[0176] In this optional embodiment, the current stop heating condition corresponding to each calibrated temperature may be to stop heating after the temperature rises to the specified temperature, such as: if the calibrated temperature is required to be 10°C, then the corresponding current stop heating condition is to stop heating when the temperature reaches 12°C; it may also be that the heating time reaches the corresponding specified heating time, such as: if the calibrated temperature is required to be 12°C, then the corresponding current stop heating condition is to stop heating after continuously heating from 10°C for 15 minutes.

[0177] In this optional embodiment, the starting temperature, the amount of seawater, the heating power, the current temperature, the heating rate, the number of all the calibration temperatures that have been obtained, etc., are all factors that affect the current stop heating condition, such as: the more seawater, the shorter the heating time required for heating to the same calibration temperature, or the lower the temperature required to be heated. And the more calibration temperatures obtained previously, the higher the temperature of the seawater environment, and the temperature of the surrounding environment where it is located will be relatively high. Then, to the next calibration temperature, the required heating time is shorter than the heating time corresponding to the previous calibration temperature, or the difference between the required stop heating temperature and the corresponding calibration temperature is less than the absolute value of the difference between the previous calibration temperature and the stop heating temperature corresponding to the calibration temperature. But in any case, when the heating stops, the current temperature of the seawater environment is higher than the corresponding calibration temperature.

[0178] It can be seen that this optional embodiment can improve the accuracy of determining the current stop heating condition for each calibration temperature by considering different but related heating condition determination factors for the first calibration temperature and the remaining calibration temperatures, thereby facilitating improving the execution accuracy of subsequent constant temperature operations and obtaining accurate and reliable calibration temperatures.

[0179] In yet another optional embodiment, performing a constant temperature operation on the calibration seawater environment to obtain a first calibration temperature includes:

[0180] After stopping heating the calibration seawater environment, monitoring the temperature change of the calibration seawater environment to obtain a monitoring result of the temperature change of the calibration seawater environment;

[0181] Analyze the temperature change monitoring results of the calibration seawater environment to obtain the temperature stability of the calibration seawater environment;

[0182] Based on the predetermined temperature stability, the temperature stability of the calibration seawater environment is monitored to obtain a temperature stability monitoring result of the calibration seawater environment;

[0183] When the temperature stability monitoring result of the calibration seawater environment is used to indicate that the temperature stability of the calibration seawater environment is greater than or equal to a preset stability (which can be understood as the temperature change slope is close to 0, such as 0.0001, or the horizontal angle with the horizontal axis is less than or equal to 0.001°), and the duration reaches a predetermined duration, the first calibration temperature is determined based on the temperature of the calibration seawater environment monitored during the duration, wherein the predetermined duration corresponding to each calibration temperature is equal, such as 5 minutes.

[0184] In this optional embodiment, in the constant temperature process corresponding to each calibration temperature, there is a process in which the temperature decreases rapidly, then gradually tends to stabilize, and then to a basically constant temperature.

[0185] In this optional embodiment, each calibrated temperature may be an average of all temperatures measured within the corresponding duration, or may be all temperatures measured within the corresponding duration.

[0186] It can be seen that this optional embodiment monitors the temperature stability of the seawater environment during the cooling process for the constant temperature process, and determines the corresponding calibration temperature when the duration of the temperature stability being less than the preset temperature reaches a specified time. This can improve the accuracy and reliability of determining each calibration temperature, thereby helping to improve the accuracy and reliability of temperature calibration of marine detection equipment.

[0187] In yet another optional embodiment, all calibrated resistance values ​​are calibrated in multiple stages according to all calibrated temperatures to obtain multiple temperature calibration coefficients of the ocean detection equipment, including:

[0188] Each calibration temperature and the calibration resistance value corresponding to the calibration temperature are input into a predetermined temperature calibration formula to perform multi-step calibration on the calibration resistance value, thereby obtaining multiple temperature calibration coefficients of the marine detection equipment.

[0189] In this optional embodiment, the number of calibration temperatures is greater than or equal to the order of the temperature calibration formula. For example, if the order of the temperature calibration formula is 3, the number of calibration temperatures and the corresponding number of calibration resistance values ​​are at least 3, or 10, and the temperature difference is 5°C. For example, they can be -5°C, 0°C, 5°C, 10°C, 15°C, 20°C, 25°C, 30°C, 35°C, and 40°C respectively.

[0190] It can be seen that this optional embodiment can achieve accurate calculation of multiple temperature calibration coefficients of the ocean detection equipment by inputting each calibration temperature and the corresponding calibration resistance value into the corresponding temperature calibration formula, thereby helping to improve the evaluation accuracy of the ocean detection equipment.

[0191] In yet another optional embodiment, the method may further include the following steps:

[0192] The target pressure of the marine detection equipment when it is kept at a constant temperature in an actual seawater environment is measured based on a pressure digital measuring instrument, and the first target resistance value of the first varistor on the marine detection equipment when it is kept at a constant temperature in an actual seawater environment and the second target resistance value of the second varistor when it is kept at a constant temperature in an actual seawater environment are collected;

[0193] Determine the target indication temperature of the marine testing equipment when the actual seawater environment is kept at a constant temperature;

[0194] Determine the target indication pressure of the marine detection equipment when it is kept at a constant temperature in an actual seawater environment according to all pressure calibration parameters, all first target resistance values, all second target resistance values ​​and the target indication temperature;

[0195] Calculate the pressure difference between the target indication pressure and the target pressure, and compare the pressure difference with the preset pressure difference to obtain a pressure comparison result;

[0196] According to the pressure comparison result, the error of the marine detection equipment is evaluated to obtain the error evaluation result, which is used as the basis for the marine detection equipment to leave the factory or pass the test.

[0197] It can be seen that after obtaining the corresponding pressure calibration coefficient, this optional embodiment analyzes the pressure detection error of the marine detection equipment by using the pressure calibration coefficient, the target pressure of the marine detection equipment at a certain temperature measured by the pressure digital measuring instrument, the target resistance value of the varistor on the marine detection equipment and the target indication temperature of the temperature depth sensor, which is beneficial to improving the accuracy of the pressure error analysis, thereby improving the accuracy and reliability of the pressure detection error assessment of the marine detection equipment.

[0198] In yet another optional embodiment, the method may further include the following steps:

[0199] The digital pressure measuring instrument of the ocean detection equipment collects the water flow velocity and water flow fluctuation in the current seawater environment when measuring each standard water pressure;

[0200] Analyze the water flow conditions corresponding to each standard water pressure to obtain the benchmark water flow velocity and benchmark water flow fluctuation conditions of the current seawater environment;

[0201] Obtain the historical water flow velocity and historical water flow fluctuation in the actual seawater environment where the marine detection equipment is used after calibration;

[0202] Analyze the historical water flow velocity and historical water flow fluctuation in the actual seawater environment with the benchmark water flow velocity and benchmark water flow fluctuation in the current seawater environment to obtain the water flow difference between the two;

[0203] Based on the difference in water flow between the two, the pressure calibration coefficient corresponding to the temperature-depth sensor is corrected to obtain the corrected pressure calibration coefficient.

[0204] It can be seen that this optional embodiment corrects the pressure calibration coefficient obtained by the above calibration by comparing the water flow velocity and water flow fluctuation conditions in the calibration seawater environment where the ocean detection equipment is located with the historical water flow velocity and water flow fluctuation conditions in the seawater environment of actual application. This can make the pressure calibration coefficient of the ocean detection equipment more closely match the actual seawater environment, further improve the accuracy of determining the pressure calibration coefficient of the ocean detection equipment, and thus further accurately detect the pressure error of the ocean detection equipment.

[0205] Embodiment 2

[0206] See also Figure 2 , Figure 2 is a schematic diagram of a device for temperature-based pressure calibration disclosed in an embodiment of the present invention. Figure 2 The described device may include one of an ocean detection device, an ocean detection server (including a local server or a cloud server), an ocean detection system, and an ocean detection platform, and as Figure 2 As shown, the device comprises:

[0207] The measuring module 201 is used to continuously measure a plurality of different water pressure points in the seawater environment based on a pressure digital measuring instrument provided on the ocean detection device when the seawater environment where the ocean detection device is currently located is at a first preset constant temperature, so as to obtain a plurality of standard water pressures;

[0208] An acquisition module 202 is used to acquire, while measuring each standard water pressure, a first resistance value of a first piezoresistor on the ocean detection device at a water pressure point corresponding to the standard water pressure and a second resistance value of a second piezoresistor at a water pressure point corresponding to the standard water pressure;

[0209] The determination module 203 is used to determine the first indication temperature of the seawater environment where the ocean detection equipment is currently located when the temperature is at a second preset constant temperature;

[0210] The determination module 203 is further used to determine the pressure calibration coefficient corresponding to the temperature-depth sensor according to all the first resistance values, all the second resistance values, the first indication temperature and all the standard water pressures.

[0211] It can be seen that implementation Figure 2The described device for temperature-based pressure calibration performs continuous measurement of multiple different water pressure points in a seawater environment at a first preset constant temperature based on a pressure digital measuring instrument to obtain multiple standard water pressures; and simultaneously obtains the first resistance value of the first varistor on the ocean detection device, the second resistance value of the second varistor, and the indicated temperature when the seawater environment in which the ocean detection device is currently located is at a second preset constant temperature; determines the pressure calibration coefficient corresponding to the temperature depth sensor based on all first resistance values, all second resistance values, the indicated temperature and all standard water pressures, which can improve the accuracy of determining the pressure calibration coefficient, thereby accurately detecting the pressure error of the ocean detection equipment based on the accurately determined pressure calibration coefficient and the seawater pressure actually measured in the actual seawater environment, thereby performing error evaluation on the ocean detection equipment to improve the successful factory delivery rate or successful use rate of the equipment.

[0212] In an optional embodiment, the specific manner in which the determination module 203 determines the pressure calibration coefficient corresponding to the temperature-depth sensor according to all first resistance values, all second resistance values, the first indication temperature, and all standard water pressures includes:

[0213] For any standard water pressure, the sum of the first resistance value and the second resistance value under the standard water pressure is calculated, and the difference of the first resistance value and the second resistance value under the standard water pressure is calculated;

[0214] The pressure calibration coefficient corresponding to the temperature-depth sensor is determined according to all the sum resistance values, all the difference resistance values, the first indication temperature and all the standard water pressures.

[0215] In this optional embodiment, the specific manner in which the determination module 203 determines the pressure calibration coefficient corresponding to the temperature depth sensor according to all the sum resistance values, all the difference resistance values, the first indication temperature and all the standard water pressures includes:

[0216] Determine all first pressure calibration coefficients corresponding to the temperature-depth sensor according to all differential resistance values, the first indication temperature and all standard water pressures;

[0217] Calculate the first indicated pressure when the seawater environment where the ocean detection equipment is currently located is at a constant temperature at a first preset constant temperature according to all the first pressure calibration coefficients and the first temperature-pressure coefficient corresponding to each first pressure calibration coefficient;

[0218] Determine all second pressure calibration coefficients corresponding to the temperature depth sensor according to the first indicated pressure, all resistance values ​​and the first indicated temperature;

[0219] Based on each second pressure calibration coefficient, the second temperature-pressure coefficient corresponding to the second pressure calibration coefficient, all differential resistance values, all sum resistance values ​​and all standard water pressures, a pressure calibration coefficient corresponding to the temperature-depth sensor is determined.

[0220] In the embodiment of the present invention, optionally, for any first preset constant temperature, multiple linear regression is performed with all differential resistance values ​​and the first indication temperature as variables and all standard water pressures as dependent variables to obtain all first pressure calibration coefficients.

[0221] It can be seen that implementation Figure 2 The described device for temperature-based pressure calibration first performs a multivariate linear regression based on the difference between the two varistors, the indicated temperature of the temperature-depth sensor and the pressure of the pressure measuring instrument, and then performs a multivariate linear regression again based on the pressure indication obtained by the multivariate linear regression, the sum of the two varistors, and the indicated temperature of the temperature-depth sensor. The final pressure calibration coefficient of the temperature-depth sensor is determined based on the basic pressure calibration coefficient obtained by the two linear regressions, which can improve the calibration accuracy and reliability of the pressure calibration coefficient, and thus help to further improve the pressure error calibration of marine detection equipment.

[0222] In another optional embodiment, the determination module 203 determines the pressure calibration coefficient corresponding to the temperature-depth sensor based on each second pressure calibration coefficient, the second temperature-pressure coefficient corresponding to the second pressure calibration coefficient, all differential resistance values, all sum resistance values, and all standard water pressures. The specific manner includes:

[0223] Based on each second pressure calibration coefficient and the second temperature-pressure coefficient corresponding to the second pressure calibration coefficient, determine the second indication temperature corresponding to the temperature-depth sensor when the seawater environment where the ocean detection equipment is currently located is kept at a first preset constant temperature;

[0224] Determine all third pressure calibration coefficients corresponding to the temperature-depth sensor according to the second indicated temperature, all differential resistance values ​​and all standard water pressures;

[0225] Calculate the second indication pressure of the current seawater environment where the ocean detection equipment is located at a constant temperature at a first preset constant temperature according to all the third pressure calibration coefficients and the third temperature-pressure coefficient corresponding to each third pressure calibration coefficient;

[0226] Determine all fourth pressure calibration coefficients corresponding to the temperature depth sensor according to the second indicated pressure, all resistance values ​​and the first indicated temperature;

[0227] All third pressure calibration coefficients and all fourth pressure calibration coefficients are determined as pressure calibration coefficients of the temperature-depth sensor.

[0228] In an embodiment of the present invention, optionally, in an embodiment of the present invention, optionally, for any first preset constant temperature, a multivariate linear regression is performed with all differential resistance values ​​and the second indication temperature as variables and all standard water pressures as dependent variables to obtain all third pressure calibration coefficients.

[0229] In the embodiment of the present invention, optionally, for any first preset constant temperature, a multivariate linear regression is performed with the second indicated pressure, all and resistance values ​​as variables and the first indicated temperature as the dependent variable to obtain a fourth pressure calibration coefficient.

[0230] It can be seen that implementation Figure 2 The described device for temperature-based pressure calibration can also perform multivariate linear regression again using the temperature indication obtained through the two multivariate linear regressions, the difference between the two varistors, and the pressure of the pressure measuring instrument, and then perform multivariate linear regression again using the pressure indication obtained through this multivariate linear regression, the sum of the two varistors, and the indicated temperature of the temperature-depth sensor, thereby determining the final pressure calibration coefficient of the temperature-depth sensor based on the fourth linear regression, which can improve the calibration accuracy and reliability of the pressure calibration coefficient, and thus help to further improve the pressure error calibration of marine detection equipment.

[0231] In another optional embodiment, the specific manner in which the determination module 203 determines the first indication temperature of the constant temperature of the seawater environment where the ocean detection equipment is currently located when the temperature is the second preset constant temperature includes:

[0232] The temperature resistance of the temperature depth sensor detects the temperature resistance value of the seawater environment where the ocean detection equipment is currently located when the temperature is constant at a second preset constant temperature;

[0233] Based on a predetermined temperature detection formula, a first indication temperature corresponding to the temperature resistance value is calculated.

[0234] The measuring module 201 is also used to continuously measure the temperature of the calibration seawater environment where the ocean detection equipment is currently located based on the temperature measuring instrument set on the ocean detection equipment, and obtain multiple calibration temperatures, all of which increase in sequence, and the temperature difference between each two adjacent calibration temperatures is equal;

[0235] The acquisition module 202 is also used to simultaneously and sequentially acquire the calibrated resistance value of the temperature-depth sensor corresponding to each calibration temperature when the temperature of the seawater environment is each calibration temperature;

[0236] like Figure 3 As shown, Figure 3 is a schematic diagram of the structure of another device for performing pressure calibration based on temperature disclosed in an embodiment of the present invention, such as Figure 3 As shown, the device may also include:

[0237] The calibration module 204 is used to perform multi-step calibration on all calibration resistance values ​​according to all calibration temperatures to obtain multiple temperature calibration coefficients corresponding to the marine detection equipment;

[0238] A loading module 205 is used to load all temperature calibration coefficients onto the temperature detection formula corresponding to the ocean detection equipment to obtain the temperature detection formula;

[0239] ;

[0240] Where, T is the calibration temperature, R T is the calibrated resistance corresponding to the calibrated temperature, a0, a1, a2, and a3 are polynomial fitting parameters respectively;

[0241] The number of all calibrated temperatures and the number of all calibrated resistance values ​​are equal to and greater than or equal to the order.

[0242] It can be seen that implementation Figure 3 The described device for performing pressure calibration based on temperature can continuously measure the temperature of the calibration seawater environment in which the ocean detection equipment is currently located based on a temperature measuring instrument arranged on the ocean detection equipment, and obtain multiple calibration temperatures with successively increasing temperatures, and the temperature difference between each two adjacent calibration temperatures is equal; at the same time, the calibration resistance values ​​corresponding to the temperature and depth sensor on the ocean detection equipment when the temperature of the seawater environment is each calibration temperature are obtained in sequence; according to all calibration temperatures, all calibration resistance values ​​are calibrated in multiple stages to obtain multiple temperature calibration coefficients corresponding to the temperature and depth sensor, which can improve the accuracy and reliability of determining the temperature calibration coefficient so that it can be loaded on the ocean detection equipment to obtain accurate and reliable temperature indications, and then the pressure error of the ocean detection equipment is accurately detected based on the accurate and reliable temperature indications, thereby performing error evaluation on the ocean detection equipment to improve the successful factory delivery rate or successful use rate of the equipment.

[0243] In yet another optional embodiment, Figure 3 As shown, the measurement module 201 is also used to measure the target pressure of the marine detection equipment when the temperature is constant at a certain constant temperature in the actual seawater environment based on the pressure digital measuring instrument;

[0244] The acquisition module 202 is also used to collect a first target resistance value of a first varistor on the marine detection device when the temperature is kept constant at a certain constant temperature in an actual seawater environment and a second target resistance value of a second varistor when the temperature is kept constant at a certain constant temperature in an actual seawater environment;

[0245] The determination module 203 is also used to determine the target indication temperature of the ocean detection equipment when the actual seawater environment is kept at a certain constant temperature;

[0246] The determination module 203 is further used to determine the target indication pressure of the marine detection equipment when the temperature is constant at a certain constant temperature in the actual seawater environment according to all pressure calibration parameters, all first target resistance values, all second target resistance values ​​and the target indication temperature;

[0247] The calculation module 206 is used to calculate the pressure difference between the target indication pressure and the target pressure, and compare the pressure difference with the preset pressure difference to obtain a pressure comparison result;

[0248] The evaluation module 207 is used to perform error evaluation on the marine detection equipment according to the pressure comparison result to obtain an error evaluation result, which is used as a basis for the marine detection equipment to leave the factory or pass the test.

[0249] It can be seen that implementation Figure 3 The described device for temperature-based pressure calibration can also, after obtaining the corresponding pressure calibration coefficient, analyze the pressure detection error of the marine detection equipment by using the pressure calibration coefficient, the target pressure of the marine detection equipment at a certain temperature measured by a pressure digital measuring instrument, the target resistance value of the varistor on the marine detection equipment, and the target indication temperature of the temperature depth sensor, which is beneficial to improving the accuracy of pressure error analysis, thereby improving the accuracy and reliability of pressure error assessment of the marine detection equipment.

[0250] In another optional embodiment, the device is also used to collect the water flow velocity and water flow fluctuation in the current seawater environment when the digital pressure measuring instrument of the marine detection equipment measures each standard water pressure; analyze the water flow conditions corresponding to each standard water pressure to obtain the benchmark water flow velocity and benchmark water flow fluctuation of the current seawater environment; obtain the historical water flow velocity and historical water flow fluctuation in the actual seawater environment used by the marine detection equipment after calibration; analyze the historical water flow velocity and historical water flow fluctuation in the actual seawater environment with the benchmark water flow velocity and benchmark water flow fluctuation in the current seawater environment to obtain the water flow difference between the two; based on the water flow difference between the two, calibrate the pressure calibration coefficient corresponding to the temperature and depth sensor to obtain the corrected pressure calibration coefficient.

[0251] It can be seen that implementation Figure 3 The described device for temperature-based pressure calibration can also correct the pressure calibration coefficient obtained by the above calibration by comparing the water flow velocity and water flow fluctuation in the calibration seawater environment where the marine detection equipment is located with the historical water flow velocity and water flow fluctuation in the seawater environment of actual application. This can make the pressure calibration coefficient of the marine detection equipment more closely match the actual seawater environment, further improve the accuracy of determining the pressure calibration coefficient of the marine detection equipment, and further accurately detect the pressure error of the marine detection equipment.

[0252] Embodiment 3

[0253] See also Figure 4 , Figure 4 Schematic diagram of the structure of a marine detection device disclosed in an embodiment of the present invention. Figure 4As shown, the marine detection equipment may include:

[0254] A memory 301 storing executable program codes;

[0255] a processor 302 coupled to the memory 301;

[0256] Furthermore, it may also include an input interface 303 and an output interface 304 coupled to the processor 302;

[0257] The processor 302 calls the executable program code stored in the memory 301 to execute part or all of the steps in the method for temperature-based pressure calibration disclosed in the first embodiment of the present invention.

[0258] Embodiment 4

[0259] An embodiment of the present invention discloses a computer storage medium, which stores computer instructions. When the computer instructions are called, they are used to execute the steps in the method for temperature-based pressure calibration disclosed in the first embodiment of the present invention.

[0260] The device embodiments described above are only illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, i.e., they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative work.

[0261] Through the specific description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on such an understanding, the above technical solution can be essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, and the storage medium includes a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable rewritable read-only memory (EEPROM), a compact disc (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0262] Finally, it should be noted that the method, device and equipment for temperature-based pressure calibration disclosed in the embodiments of the present invention are only preferred embodiments of the present invention, and are only used to illustrate the technical solution of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for pressure calibration based on temperature, characterized in that: The method comprises: When the seawater environment where the ocean detection device is currently located is kept at a first preset constant temperature, a pressure digital measuring instrument provided on the ocean detection device is used to continuously measure a plurality of different water pressure points in the seawater environment to obtain a plurality of standard water pressures; While measuring each of the standard water pressures, obtaining a first resistance value of a first piezoresistor on the ocean detection device at a water pressure point corresponding to the standard water pressure and a second resistance value of a second piezoresistor at a water pressure point corresponding to the standard water pressure; Determine a first indication temperature when the seawater environment where the ocean detection equipment is currently located is at a second preset constant temperature; Determine a pressure calibration coefficient corresponding to the temperature-depth sensor according to all the first resistance values, all the second resistance values, the first indication temperature, and all the standard water pressures; The method further comprises: For any of the standard water pressures, calculating the average of the first resistance value and the second resistance value under the standard water pressure; Calculate the average of the standard water pressures between every two adjacent standard water pressures according to all the standard water pressures; For any of the standard water pressure averages, calculate a target resistance value and a target difference resistance value between two resistance averages corresponding to the standard water pressure average; Determine a target pressure calibration coefficient corresponding to the temperature-depth sensor according to all the target and resistance values, all the target differential resistance values, the first indication temperature and all the standard water pressure averages; Among them, a multivariate linear regression is performed on the distribution of independent variables and dependent variables from different angles using the mean values ​​of all the standard water pressures and the difference resistance value of the mean values ​​of each pair of resistance values ​​corresponding to the mean value of each standard water pressure, the sum resistance value, and the first indication temperature to obtain the target pressure calibration coefficient, and the pressure calibration coefficient obtained above is corrected based on the target pressure calibration coefficient to obtain the pressure calibration coefficient corresponding to the temperature depth sensor.

2. The method for pressure calibration based on temperature according to claim 1, characterized in that: Determining the pressure calibration coefficient corresponding to the temperature and depth sensor according to all the first resistance values, all the second resistance values, the first indication temperature and all the standard water pressures includes: for any of the standard water pressures, calculating the sum resistance value between the first resistance value and the second resistance value under the standard water pressure, and calculating the difference resistance value between the first resistance value and the second resistance value under the standard water pressure; determining the pressure calibration coefficient corresponding to the temperature and depth sensor according to all the sum resistance values, all the difference resistance values, the first indication temperature and all the standard water pressures.

3. The method for temperature-based pressure calibration according to claim 2, characterized in that: Determining the pressure calibration coefficient corresponding to the temperature and depth sensor according to all the sum resistance values, all the differential resistance values, the first indication temperature and all the standard water pressures includes: determining all the first pressure calibration coefficients corresponding to the temperature and depth sensor according to all the differential resistance values, the first indication temperature and all the standard water pressures; calculating the first indication pressure when the seawater environment where the ocean detection equipment is currently located is at the first preset constant temperature according to all the first pressure calibration coefficients and the first temperature-pressure coefficient corresponding to each of the first pressure calibration coefficients; determining all the second pressure calibration coefficients corresponding to the temperature and depth sensor according to the first indication pressure, all the sum resistance values ​​and the first indication temperature; determining the pressure calibration coefficient corresponding to the temperature and depth sensor based on each of the second pressure calibration coefficients, the second temperature-pressure coefficient corresponding to the second pressure calibration coefficient, all the differential resistance values, all the sum resistance values ​​and all the standard water pressures.

4. The method for temperature-based pressure calibration according to claim 3, characterized in that: The method of determining the pressure calibration coefficient corresponding to the temperature and depth sensor based on each of the second pressure calibration coefficients, the second temperature and pressure coefficient corresponding to the second pressure calibration coefficient, all of the differential resistance values, all of the sum resistance values, and all of the standard water pressures includes: determining the second indication temperature corresponding to the temperature and depth sensor when the seawater environment where the ocean detection equipment is currently located is at the first preset constant temperature based on each of the second pressure calibration coefficients and the second temperature and pressure coefficient corresponding to the second pressure calibration coefficient; determining all of the third pressure calibration coefficients corresponding to the temperature and depth sensor according to the second indication temperature, all of the differential resistance values, and all of the standard water pressures; calculating the second indication pressure when the seawater environment where the ocean detection equipment is currently located is at the first preset constant temperature according to all of the third pressure calibration coefficients and the third temperature and pressure coefficient corresponding to each of the third pressure calibration coefficients; determining all of the fourth pressure calibration coefficients corresponding to the temperature and depth sensor according to the second indication pressure, all of the sum resistance values, and the first indication temperature; determining all of the third pressure calibration coefficients and all of the fourth pressure calibration coefficients as the pressure calibration coefficient of the temperature and depth sensor.

5. The method for pressure calibration based on temperature according to any one of claims 1 to 4, characterized in that: The method of determining the first indication temperature when the seawater environment where the ocean detection equipment is currently located is at the second preset constant temperature includes: detecting the temperature resistance value when the seawater environment where the ocean detection equipment is currently located is at the second preset constant temperature based on the temperature resistance of the temperature depth sensor; and calculating the first indication temperature corresponding to the temperature resistance value based on a predetermined temperature detection formula.

6. The method for temperature-based pressure calibration according to claim 5, characterized in that: The method further includes: continuously measuring the temperature of the calibration seawater environment where the ocean detection equipment is currently located based on a temperature measuring instrument arranged on the ocean detection equipment to obtain a plurality of calibration temperatures, wherein all the calibration temperatures increase in sequence, and the temperature difference between each two adjacent calibration temperatures is equal; at the same time, sequentially obtaining the calibration resistance value corresponding to the temperature depth sensor when the temperature of the seawater environment is each calibration temperature; performing multi-step calibration on all the calibration resistance values ​​according to all the calibration temperatures to obtain a plurality of temperature calibration coefficients corresponding to the ocean detection equipment; and loading all the temperature calibration coefficients on the temperature detection formula corresponding to the ocean detection equipment to obtain the temperature detection formula: ； In the formula, T is the calibration temperature, R T is the calibrated resistance value corresponding to the calibrated temperature, a 0 、a 1 、a 2 、a 3 are polynomial fitting parameters respectively; wherein the number of all the calibrated temperatures and the number of all the calibrated resistance values ​​are equal to and greater than or equal to the order.

7. The method for temperature-based pressure calibration according to claim 1, 2, 3, 4 or 6, characterized in that: The method further includes: measuring the target pressure of the ocean detection equipment when the temperature is constant at a certain constant temperature in the actual seawater environment based on the pressure digital measuring instrument, and collecting the first target resistance value of the first varistor on the ocean detection equipment when the temperature is constant at the certain constant temperature in the actual seawater environment and the second target resistance value of the second varistor when the temperature is constant at the certain constant temperature in the actual seawater environment; determining the target indication temperature of the ocean detection equipment when the temperature is constant at the certain constant temperature in the actual seawater environment; determining the target indication pressure of the ocean detection equipment when the temperature is constant at the certain constant temperature in the actual seawater environment according to all pressure calibration parameters, all the first target resistance values, all the second target resistance values ​​and the target indication temperature; calculating the pressure difference between the target indication pressure and the target pressure, and obtaining a pressure comparison result by comparing the pressure difference with a preset pressure difference; and performing an error evaluation on the ocean detection equipment according to the pressure comparison result to obtain an error evaluation result, and the error evaluation result is used as the basis for the release or qualification of the ocean detection equipment.

8. A device for calibrating pressure based on temperature, characterized in that: The device is used to execute the method for temperature-based pressure calibration as described in any one of claims 1 to 7, and the device includes: a measuring module, which is used to continuously measure multiple different water pressure points in the seawater environment when the seawater environment where the ocean detection equipment is currently located is at a first preset constant temperature, based on the pressure digital measuring instrument set on the ocean detection equipment, to obtain multiple standard water pressures; an acquisition module, which is used to obtain the first resistance value of the first varistor and the second resistance value of the second varistor on the ocean detection equipment while measuring each of the standard water pressures; a determination module, which is used to determine the first indication temperature when the seawater environment where the ocean detection equipment is currently located is at a second preset constant temperature; the determination module is also used to determine the pressure calibration coefficient corresponding to the temperature depth sensor based on all the first resistance values, all the second resistance values, the first indication temperature and all the standard water pressures.

9. A marine detection device, characterized in that: The marine detection equipment includes: a memory storing executable program code; a processor coupled to the memory; the processor calls the executable program code stored in the memory to execute the method for temperature-based pressure calibration as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and when the computer instructions are called, they are used to execute the method for temperature-based pressure calibration according to any one of claims 1 to 7.

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