JP2024025471A - Sensor evaluation device, sensor evaluation system, sensor evaluation method, and sensor evaluation program - Google Patents

Abstract

It is preferable that a water quality sensor is easily and accurately calibrated or replaced at an appropriate timing. [Solution] First status information indicating the status of one or more reference vessels, and a first water quality measurement value of a first water quality sensor possessed by the reference vessel, wherein the reference vessel is in a status indicated by the first status information. a storage unit that stores a first water quality measurement value when the target vessel is in the second status information based on the second status information indicating the status of the target vessel, and the first status information and the first water quality measurement value; a generation unit that generates a water quality standard value in the case of the indicated state; an evaluation unit that evaluates the second water quality sensor based on the second water quality measurement value of the second water quality sensor of the target ship and the water quality standard value; Provided is a sensor evaluation device comprising: [Selection diagram] Figure 4

Description

The present invention relates to a sensor evaluation device, a sensor evaluation system, a sensor evaluation method, and a sensor evaluation program.

Patent Document 1 states, "What the present invention seeks to provide is a method for monitoring the function of a sensor, and a sensor equipped with an integrated system for monitoring the function." (Paragraph 0005) ).
Patent Document 2 states that "the present disclosure relates to a monitoring system for an electrochemical sensor" (abstract).
Patent Document 3 states that "it is possible to prevent water treatment from being carried out without the pH meter drift and calibration deviation being resolved" (abstract).
Patent Document 4 describes ``a gas sensor service life prediction method and gas detection device capable of predicting the actual service life of a gas sensor and continuously maintaining the normal operating state of the gas detection device'' ( summary).
Patent Document 5 states that "a maintenance management system for a marine compressor is provided that can appropriately deliver repair requests for replacement parts or replacement parts" (paragraph 0006).
[Prior art documents]
[Patent document]
[Patent Document 1] Patent No. 5096162 [Patent Document 2] US Patent Application Publication No. 2021/0396710 [Patent Document 3] JP 2019-45455A [Patent Document 4] JP 2015-94616 [ Patent Document 5] Patent No. 6786749

Preferably, the water quality sensor is easily and accurately calibrated or replaced at an appropriate time.

In a first aspect of the invention, a sensor evaluation device is provided. The sensor evaluation device includes first status information indicating the status of one or more reference vessels, and a first water quality measurement value of a first water quality sensor possessed by the reference vessel, in which the reference vessel is in a state indicated by the first status information. a storage unit that stores a first water quality measurement value in a certain case; second status information indicating the status of the target vessel; and a storage unit that stores a first water quality measurement value in a certain case; a generation unit that generates a water quality standard value in the case of the state shown in , a second water quality measurement value of a second water quality sensor that the target ship has, and an evaluation that evaluates the second water quality sensor based on the water quality standard value. It is equipped with a section.

The sensor evaluation device may further include a calculation unit that calculates when to calibrate or replace the second water quality sensor based on the evaluation result of the second water quality sensor by the evaluation unit.

The calculation unit may calculate the calibration time or the replacement time based on the time change of the second water quality measurement value of the second water quality sensor.

The calculation unit may further calculate the calibration timing or replacement timing based on the scheduled route of the target vessel.

The first status information may include information on the nautical position of the reference vessel. The storage unit may store the nautical position of the reference vessel and the first water quality measurement value when the reference vessel is at the voyage position. The second status information may include information on the nautical position of the target vessel. The generation unit may generate the water quality reference value based on the nautical position of the target vessel, the nautical position of the reference vessel, and the first water quality measurement value when the reference vessel is at the voyage position.

The second status information may include information on the nautical position of the target vessel. The generation unit may select the state of the target ship for which the water quality standard value is to be generated based on the information on the nautical position of the target ship, and may generate the water quality standard value when the target ship is in the selected state.

The calculation unit may determine a position for replacing the second water quality sensor based on the calculated replacement time and information on the voyage position of the target vessel.

The sensor evaluation device may further include a calibration section that calibrates the second water quality sensor based on the evaluation result of the second water quality sensor by the evaluation section.

The target vessel has a target exhaust gas treatment device into which a second liquid and a second exhaust gas are introduced, processes the second exhaust gas with the second liquid, and discharges a second exhaust liquid after treating the second exhaust gas with the second liquid. It's fine. One second water quality sensor may measure the water quality of the second liquid, and the other second water quality sensor may measure the water quality of the second waste liquid. The evaluation unit may evaluate other second water quality sensors based on the evaluation result of one second water quality sensor.

The first state information may include an output value of a power plant that discharges the first exhaust gas, and the first exhaust gas is introduced into a reference exhaust gas treatment device that the reference vessel has. The storage unit stores a first water quality measurement value of the first liquid introduced into the reference exhaust gas treatment device measured by one of the first water quality sensors, and a reference exhaust gas treatment in which the first exhaust gas is treated with the first liquid. Another first water quality measurement value of the first effluent discharged by the device, measured by another first water quality sensor, and an output value of the power plant may be stored. The evaluation unit evaluates the other second water quality sensor based on the first water quality measurement value, the other first water quality measurement value, the output value of the power unit, and the evaluation result of the one second water quality sensor. It's fine.

The storage unit performs machine learning on the relationship between the first water quality measurement value, the water quality standard value, and the evaluation result of the second water quality sensor, so that when the second water quality measurement value of the second water quality sensor is input, The apparatus may include an evaluation learning section that generates an evaluation inference model that outputs evaluation inference data indicating evaluation results for two water quality measurement values.

In a second aspect of the invention, a sensor evaluation system is provided. The sensor evaluation system includes a sensor evaluation device and a second transmitter included in the target vessel, the second transmitter configured to transmit a second water quality measurement value of the second water quality sensor to the sensor evaluation device. and may be provided. The sensor evaluation device may include a first transmitter that transmits the evaluation result of the second water quality sensor by the evaluation section to the target vessel.

The sensor evaluation system includes a sensor evaluation device, a position information acquisition unit possessed by the target vessel, the position information acquisition unit acquiring information on the nautical position of the target vessel, and a second position information acquisition unit possessed by the target vessel. The second transmitter may include a second transmitter that transmits the second water quality measurement value of the second water quality sensor and information on the navigational position of the target vessel to the sensor evaluation device. The sensor evaluation device may include a first transmitter that transmits the evaluation result of the second water quality sensor by the evaluation section to the target vessel.

The sensor evaluation system may further include a calibration unit that is included in the target ship, and that calibrates the second water quality sensor based on the evaluation result of the second water quality sensor by the evaluation unit.

In a third aspect of the invention, a sensor evaluation method is provided. In the sensor evaluation method, the storage unit stores first status information indicating the status of one or more reference vessels, and a first water quality measurement value of a first water quality sensor possessed by the reference vessel, and the reference vessel stores first status information indicating the status of one or more reference vessels. a storage step of storing a first water quality measurement value in the case of the state shown in FIG. , a generation step of generating a water quality standard value when the target ship is in the state indicated by the second status information; and an evaluation step of evaluating the second water quality sensor based on the second water quality sensor.

In a fourth aspect of the present invention, a sensor evaluation program is provided. The sensor evaluation program causes the computer to function as a sensor evaluation device.

Note that the above summary of the invention does not list all the features of the invention. Furthermore, subcombinations of these features may also constitute inventions.

2 is a diagram illustrating an example of the relationship between a target ship 200, a sensor evaluation device 100, and a sensor evaluation system 400. FIG. 3 is a diagram showing an example of the relationship between a reference ship 300 and a sensor evaluation device 100. FIG. 3 is a diagram illustrating an example of the relationship between one or more reference vessels 300 and a sensor evaluation device 100. FIG. It is a block diagram showing an example of sensor evaluation device 100 concerning one embodiment of the present invention. It is a figure which shows an example of the storage aspect of 1st state information Is1 and 1st water quality measurement value Q1 by the memory|storage part 10. 7 is a diagram showing an example of the relationship between the water quality Q2 of the second liquid 74 measured by the second water quality sensor 80 and the elapsed time t. FIG. 7 is a diagram illustrating an example of preprocessed data for the measured value of water quality Q2 selected as a target for generating the water quality standard value Qs in FIG. 6. FIG. 8 is a diagram showing an example of the relationship between the data after pretreatment in FIG. 7 and the water quality standard value Qs. FIG. 8 is a diagram showing another example of the relationship between the data after pretreatment in FIG. 7 and the water quality standard value Qs. FIG. FIG. 2 is a diagram illustrating an example of a route of a target vessel 200. It is a figure which shows another example of the memory|storage aspect of 1st state information Is1 and 1st water quality measurement value Q1 by the memory|storage part 10. 2 is a diagram illustrating an example of the relationship between a target ship 210, a sensor evaluation device 100, and a sensor evaluation system 400. FIG. 7 is a diagram showing another example of the relationship between the target ship 200, the sensor evaluation device 100, and the sensor evaluation system 400. FIG. 2 is a diagram showing an example of an evaluation inference model 110. FIG. It is a block diagram showing another example of sensor evaluation device 100 concerning one embodiment of the present invention. 1 is a flowchart illustrating an example of a sensor evaluation method according to one embodiment of the present invention. 1 is a flowchart illustrating an example of a sensor evaluation method according to one embodiment of the present invention. FIG. 3 is a diagram illustrating an example of a computer 2200 in which a sensor evaluation device 100 or a sensor evaluation system 400 according to an embodiment of the present invention may be implemented in whole or in part.

Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. Furthermore, not all combinations of features described in the embodiments are essential to the solution of the invention.

FIG. 1 is a diagram showing an example of the relationship between a target ship 200, a sensor evaluation device 100, and a sensor evaluation system 400. In FIG. 1, the range of the target ship 200 is shown by a dashed line, and the range of the sensor evaluation system 400 is shown by a rough broken line. The target ship 200 is a ship that has the second water quality sensor 80 that is the evaluation target of the sensor evaluation device 100. All ships can be the target ships 200, regardless of the type of ship. The relevant type of ship refers to whether the ship is a cargo ship or a passenger ship, the size of the ship, the displacement of the ship's engine, etc.

The target ship 200 has the target exhaust gas treatment device 70. The target exhaust gas treatment device 70 is, for example, a ship scrubber. A second liquid 74 and a second exhaust gas 62 are introduced into the target exhaust gas treatment device 70 . The second water quality sensor 80 may be a pH sensor, a PAH (Polycyclic Aromatic Hydrocarbons) sensor, or a turbidity sensor.

Target vessel 200 may include a power plant 60 and a pump 72. The power device 60 is, for example, an engine. Power plant 60 discharges second exhaust gas 62 . The second exhaust gas 62 may contain harmful substances such as sulfur oxides and nitrogen oxides. Pump 72 introduces second liquid 74 into target exhaust gas treatment device 70 . The second liquid 74 may be seawater.

The target exhaust gas treatment device 70 processes the second exhaust gas 62 with the second liquid 74 . Processing the second exhaust gas 62 refers to removing the above-mentioned harmful substances contained in the second exhaust gas 62. The target exhaust gas treatment device 70 discharges a second exhaust liquid 76 obtained by treating the second exhaust gas 62 with a second liquid 74 . The second waste liquid 76 may contain harmful substances such as sulfur oxides and nitrogen oxides. The second waste liquid 76 may be discharged to the outside of the target exhaust gas treatment device 70. The target exhaust gas treatment device 70 discharges exhaust gas 64 in which the second exhaust gas 62 is treated with the second liquid 74 .

The target ship 200 may include a control section 50, a data collection section 52, a second transmission section 54, a second reception section 56, and a position information acquisition section 58. The control unit 50 controls the power plant 60, the data collection unit 52, the second transmission unit 54, the second reception unit 56, and the position information acquisition unit 58. The control unit 50 is, for example, a CPU (Central Processing Unit).

The target ship 200 may include a plurality of second water quality sensors 80. In this example, the target ship 200 has two second water quality sensors 80 (second water quality sensor 80-1 and second water quality sensor 80-2). In this example, one second water quality sensor 80 (second water quality sensor 80-1) measures the water quality of the second liquid 74, and the other second water quality sensor 80 (second water quality sensor 80-2) measures the water quality of the second liquid 74. The water quality of the waste liquid 76 is measured. Target vessel 200 may include gas sensor 82 . Gas sensor 82 measures the concentration of harmful substances in exhaust gas 64 .

The target ship 200 may be sailing on the ocean. The sensor evaluation device 100 may be placed on land. The sensor evaluation device 100 may be mounted on the target ship 200.

The position information acquisition unit 58 acquires information on the nautical position of the target ship 200. The position information acquisition unit 58 is, for example, a GPS (Global Positioning System). Information on the voyage position of the target vessel 200 acquired by the position information acquisition unit 58 is defined as position information Ip.

The data collection unit 52 collects the water quality measurement value of the second water quality sensor 80, the toxic substance concentration measurement value of the gas sensor 82, the output of the power plant 60, and the position information Ip of the target ship 200. The data collected by the data collection unit 52 is referred to as data Da1.

The second transmitter 54 transmits the data Da1 to the sensor evaluation device 100. The second transmitter 54 of the target ship 200 during the voyage may transmit the data Da1 to the sensor evaluation device 100 located on land. The second transmitter 54 may transmit the data Da1 over the Internet line. The second receiving unit 56 receives data on the evaluation results of the second water quality sensor 80 by the sensor evaluation device 100. This data is referred to as data Da2.

The second receiving unit 56 may receive data Da2 transmitted by the first transmitting unit 20 (described later) of the sensor evaluation device 100. The second receiving unit 56 may receive the data Da2 over the Internet line.

The sensor evaluation system 400 may include the sensor evaluation device 100 and the second transmitter 54. The sensor evaluation system 400 may further include a position information acquisition section 58. The sensor evaluation system 400 may further include a control section 50, a data collection section 52, and a second reception section 56.

FIG. 2 is a diagram showing an example of the relationship between the reference ship 300 and the sensor evaluation device 100. In FIG. 2, the range of the reference vessel 300 is shown by a dashed line. The reference ship 300 is a ship that can provide reference data for evaluating the second water quality sensor 80 (see FIG. 1), which is the evaluation target of the sensor evaluation device 100. Similar to the target ship 200, all ships can be the reference ship 300 regardless of the type of ship.

The reference ship 300 has a reference exhaust gas treatment device 170. The reference exhaust gas treatment device 170 is, for example, a ship scrubber. A first liquid 174 and a first exhaust gas 162 are introduced into the reference exhaust gas treatment device 170 .

Reference vessel 300 may have a power plant 160 and a pump 172. Power device 160 is, for example, an engine. Power plant 160 discharges first exhaust gas 162 . The first exhaust gas 162 may contain harmful substances such as sulfur oxides and nitrogen oxides. Pump 172 introduces first liquid 174 into reference exhaust gas treatment device 170 . The first liquid 174 may be seawater.

The reference exhaust gas treatment device 170 treats the first exhaust gas 162 with the first liquid 174 . The reference exhaust gas treatment device 170 discharges a first exhaust liquid 176 obtained by treating the first exhaust gas 162 with a first liquid 174 . The first waste liquid 176 may be discharged to the outside of the reference exhaust gas treatment device 170. The reference exhaust gas treatment device 170 discharges exhaust gas 164 in which the first exhaust gas 162 is treated with the first liquid 174 .

The reference ship 300 may include a control section 150, a data collection section 152, a second transmission section 154, a second reception section 156, and a position information acquisition section 158. The functions of the control unit 150, the data collection unit 152, the second transmission unit 154, the second reception unit 156, and the position information acquisition unit 158 are the control unit 50, the data collection unit 52, the second transmission unit 54, and the second reception unit, respectively. 56 and the position information acquisition unit 58.

Reference vessel 300 has a first water quality sensor 180. The first water quality sensor 180 may be a pH sensor, a PAH sensor, or a turbidity sensor. Reference vessel 300 may include a plurality of first water quality sensors 180. In this example, the reference vessel 300 has two first water quality sensors 180 (first water quality sensor 180-1 and first water quality sensor 180-2). In this example, one first water quality sensor 180-1 measures the water quality of the first liquid 174, and the other first water quality sensor 180-2 measures the water quality of the first waste liquid 176. Reference vessel 300 may include gas sensor 182. Gas sensor 182 measures the concentration of harmful substances in exhaust gas 164.

The position information acquisition unit 158 acquires information on the nautical position of the reference vessel 300. The position information acquisition unit 158 is, for example, a GPS. Information on the nautical position of the reference vessel 300 is defined as position information Ip'.

The data collection unit 152 collects the water quality measurement value of the first water quality sensor 180, the toxic substance concentration measurement value of the gas sensor 182, the output of the power plant 160, and the position information Ip' of the reference vessel 300. The data collected by the data collection unit 152 is referred to as data Da1'.

The second transmitter 154 transmits data Da1' to the sensor evaluation device 100. The second receiving unit 156 receives data on the evaluation results of the first water quality sensor 180 by the sensor evaluation device 100. This data is referred to as data Da2'.

FIG. 3 is a diagram illustrating an example of the relationship between one or more reference ships 300 and the sensor evaluation device 100. In this example, each of the n reference ships 300 transmits data Da1' to the sensor evaluation device 100 and receives data Da2' from the sensor evaluation device 100.

FIG. 4 is a block diagram showing an example of a sensor evaluation device 100 according to one embodiment of the present invention. The sensor evaluation device 100 includes a storage section 10, a generation section 12, and an evaluation section 14. The sensor evaluation device 100 may include a control section 16, a calculation section 18, and a calibration section 11.

The sensor evaluation device 100 may include a first transmitter 20 and a first receiver 22. The first receiving section 22 receives the data Da1 transmitted by the second transmitting section 54. The first receiving section 22 receives the data Da1' transmitted by the second transmitting section 154. The first transmitter 20 transmits the data Da2 to the second receiver 56. The first transmitting section 20 may transmit the data Da2' to the second receiving section 156.

The storage unit 10 stores first status information indicating the status of one or more reference vessels 300 (see FIG. 2) and a first water quality measurement value of the first water quality sensor 180. The first state information is referred to as first state information Is1. The first water quality measurement value is referred to as the first water quality measurement value Q1.

The first state information Is1 may include the value of the output Pw of the power plant 160 (see FIG. 2). The first status information Is1 may include information on the flow rate of the first liquid 174 or information on the flow rate of the first drained liquid 176. The first state information Is1 may include the voyage position of the reference vessel 300 (see FIG. 2), the output of the power plant 160 (see FIG. 2) while voyaging at the voyage position, and the type of the reference vessel 300. The nautical position of the reference vessel 300 refers to the latitude and longitude at which the reference vessel 300 is navigating. As described above, the type of reference ship 300 refers to information such as whether the reference ship 300 is a cargo ship or a passenger line.

The first water quality measurement value Q1 is a water quality measurement value when the reference vessel 300 (see FIG. 2) is in the state shown in the first state information Is1. The water quality measurement value when the reference vessel 300 is in the state shown in the first status information Is1 is the measured value of water quality when the reference vessel 300 is sailing at one voyage position with one output of the power plant 160 (see FIG. 2). , refers to the water quality measurement value of the first liquid 174 (see FIG. 2) or the first waste liquid 176 (see FIG. 2) measured by the first water quality sensor 180 (see FIG. 2). The storage unit 10 may store first water quality measurement values Q1 for each sea area, each season, and each weather.

FIG. 5 is a diagram showing an example of how the first state information Is1 and the first water quality measurement value Q1 are stored by the storage unit 10. The storage unit 10 may store the nautical position of the reference vessel 300 and the first water quality measurement value Q1 when the reference vessel 300 is at the voyage position. In this example, the storage unit 10 stores n pieces of first status information Is1 indicating the status of each of the n reference vessels 300 (see FIG. 3), and a first water quality sensor of each of the n reference vessels 300. 180 first water quality measurement values are stored in association with each other. FIG. 5 is an example in which the first water quality measurement value Q1 is pH.

The generation unit 12 (see FIG. 4) generates a water quality standard value based on the second state information indicating the state of the target vessel 200 (see FIG. 1), the first state information Is1, and the first water quality measurement value Q1. do. The second state information is referred to as second state information Is2. This water quality standard value is referred to as a water quality standard value Qs.

The second state information Is2 may include position information Ip. The position information Ip may be the navigation position of the target vessel 200 (see FIG. 1). The second state information Is2 may include position information Ip, the output of the power plant 60 (see FIG. 1) while the target ship 200 is sailing at the position indicated by the position information Ip, and the type of the target ship 200. The position information acquisition unit 58 may acquire the voyage position of the target ship 200 in real time while the target ship 200 is sailing.

The second state information Is2 may include the output Pw of the power plant 60 of the target vessel 200 (see FIG. 1). The second state information Is2 may include information on the flow rate of the second liquid 74 or information on the flow rate of the second drained liquid 76. The second state information Is2 may include the voyage position of the target ship 200 (see FIG. 1), the output of the power plant 60 (see FIG. 1) while voyaging at the voyage position, and the type of the target ship 200. The data collection unit 52 (see FIG. 1) collects the voyage position of the target vessel 200 acquired by the position information acquisition unit 58, the output Pw of the power plant 60 while voyaging at the voyage position, the flow rate of the second liquid 74, and the second The flow rate of the waste liquid 76 may be acquired in real time.

FIG. 6 is a diagram showing an example of the relationship between the water quality Q2 of the second liquid 74 measured by the second water quality sensor 80 and the elapsed time t. In this example, the second water quality sensor 80 is a pH sensor. The black circles in FIG. 6 are data corresponding to the second state information Is2 for which the water quality standard value Qs is generated. This data is data selected for generation of the water quality standard value Qs. The white square marks in FIG. 6 are data corresponding to the second state information Is2, which is not a target for generating the water quality standard value Qs. This data is data that is excluded from the generation target of the water quality standard value Qs.

The second state information Is2, which is not a target for generating the water quality standard value Qs, may include a case where the output of the power plant 60 (see FIG. 1) is zero. The second state information Is2, which is not a target for generating the water quality standard value Qs, may include a case where the flow rate of the second liquid 74 or the flow rate of the second drained liquid 76 is zero. When the second water quality sensor 80 is a pH sensor, the excluded second state information Is2 may further include second state information Is2 corresponding to data in which the pH is measured as 3.5 or less.

The generation unit 12 (see FIG. 4) may select the state of the target vessel 200 for which the water quality standard value Qs is to be generated based on the position information Ip. The position information acquisition unit 58 (see FIG. 1) may acquire the distance between the voyage position of the target vessel 200 and the land closest to the voyage position. This distance is defined as distance h. The generation unit 12 (see FIG. 4) may select the state of the target vessel 200 for which the water quality standard value Qs is to be generated based on the distance h.

If the distance h is less than the threshold distance h _th , the power plant 60 (see FIG. 1) may be shut down in preparation for berthing. As a result, the output Pw of the power plant 60 can become zero. If the distance h is less than the threshold distance h _th , the target exhaust gas treatment device 70 (see FIG. 1) may be stopped in preparation for berthing. Thereby, the flow rate of the second liquid 74 and the flow rate of the second drained liquid 76 can become zero. Due to these, when the distance h is less than the threshold distance h _th , the water quality Q2 of the second liquid 74 tends to become unstable. Therefore, data when the distance h is less than the threshold distance h _th may be included in the excluded data. The generation unit 12 (see FIG. 4) does not need to generate the water quality standard value Qs when the distance h is less than the threshold distance _hth .

If the distance h is greater than or equal to the threshold distance h _th , the target vessel 200 is sailing offshore, and the power plant 60 and the target exhaust gas treatment device 70 may be in operation. Therefore, the water quality Q2 of the second liquid 74 is likely to be stable. Therefore, the generation unit 12 (see FIG. 4) may generate the water quality standard value Qs when the distance h is greater than or equal to the threshold distance _hth .

The generation unit 12 (see FIG. 4) may generate the water quality standard value Qs when the target vessel 200 (see FIG. 1) is in the selected state. In this example, the generation unit 12 generates the water quality standard value Qs based on the data indicated by the black circles shown in FIG.

FIG. 7 is a diagram showing an example of preprocessed data for the measured value of water quality Q2 selected for generation of the water quality standard value Qs in FIG. The preprocessing is, for example, averaging processing. Preprocessing may be performed on the data marked with black circles in FIG. The averaging process may be a process of averaging the measured values of the water quality Q2 over 12 hours. The averaging process may be performed over a period from a predetermined time in the past to the present. The relevant point in the past is, for example, four months ago. In FIG. 7, the data after preprocessing is shown by a solid black line.

FIG. 8 is a diagram showing an example of the relationship between the data after pretreatment in FIG. 7 and the water quality standard value Qs. The measured value of the water quality Q2 by the second water quality sensor 80 may change with the elapsed time t due to the drift of the second water quality sensor 80 itself. In this example, the measured value of water quality Q2 decreases with elapsed time t. In this example, the time rate of change of the measured value of water quality Q2 is constant regardless of the elapsed time t.

The generation unit 12 (see FIG. 4) generates a water quality standard value Qs based on the second state information Is2, the first state information Is1 (see FIG. 5), and the first water quality measurement value Q1 (see FIG. 5). You may do so. The first state information Is1 stored in the storage unit 10 may be information indicating the past state of the reference ship 300. The first water quality standard value Q1 stored in the storage unit 10 is at least one of the water quality of the first liquid 174 and the water quality of the first waste liquid 176 measured by the first water quality sensor 180 of the reference vessel 300 in the past. good. The first state information Is1 may be information indicating the current state of the reference ship 300 during the voyage. The first water quality standard value Q1 may be at least one of the current water quality of the first liquid 174 and the water quality of the first waste liquid 176 measured by the first water quality sensor 180 of the reference vessel 300 during the voyage. The water quality standard value Qs is a water quality standard value when the target vessel 200 (see FIG. 1) is in the state shown in the second state information Is2.

The generation unit 12 (see FIG. 4) generates the position information Ip of the target ship 200 (see FIG. 1), the nautical position of the reference ship 300 (see FIG. 2), and the first The water quality standard value Qs may be generated based on the water quality measurement value Q1. Assume that at a time t1 shown in FIG. 8, the target ship 200 is navigating at a single voyage position Ps1 with a single output Pw1. The reference value of water quality when the target vessel 200 is in the state shown in the second status information Is2 is the water quality standard value when one or more reference vessels 300 are navigating at the same navigation position Ps1 with the same output Pw1. 1 water quality measurement value Q1 (see FIG. 5).

The evaluation unit 14 (see FIG. 4) evaluates the second water quality sensor 80 based on the second water quality measurement value Q2 of the second water quality sensor 80 (see FIG. 1) and the water quality standard value Qs. The difference between the second water quality measurement value Q2 and the water quality standard value Qs is defined as a difference d. The evaluation unit 14 may evaluate the second water quality sensor 80 based on the difference d. The evaluation unit 14 may evaluate the second water quality sensor 80 as normal if the difference d is less than a predetermined threshold value d _th . The evaluation unit 14 may evaluate that the second water quality sensor 80 should be calibrated or replaced if the difference d is greater than or equal to the threshold value d _th .

Reference vessel 300 and target vessel 200 may be different vessels or may be the same vessel. When the reference vessel 300 and the target vessel 200 are the same vessel, the evaluation unit 14 (see FIG. 4) determines the current second water quality sensor 80 of the vessel based on the past water quality standard value Qs of the vessel. This is a case of evaluation. The water quality standard value Qs is a water quality standard value Qs generated based on the past first state information Is1 of the ship and the past first water quality standard value Q1. When there are a plurality of reference vessels 300, the target vessel 200 may be a vessel different from any of the plurality of reference vessels 300, or may be the same vessel as one of the plurality of reference vessels 300.

The manner in which the water quality Q2 measured by the second water quality sensor 80 (see FIG. 1) changes over time t may depend on the environment in which the second water quality sensor 80 is installed. In the target vessel 200 (see FIG. 1), the second water quality sensor 80 may be installed in an environment with high temperature, high humidity, and a lot of vibration. The environment in which the second water quality sensor 80 is installed may vary depending on the target vessel 200. Therefore, the manner in which the water quality Q2 changes with the elapsed time t may vary depending on the second water quality sensor 80. The evaluation unit 14 evaluates the second water quality sensor 80 based on the water quality standard value Qs. Therefore, highly reliable evaluation results of the second water quality sensor 80 can be obtained.

When evaluating the second water quality sensor 80 individually, it is preferable to evaluate the second water quality sensor 80 that has been removed from the target exhaust gas treatment device 70. Therefore, when evaluating the second water quality sensor 80 individually, the target exhaust gas treatment device 70 may be stopped. For this reason, it is difficult to individually evaluate the second water quality sensor 80 while the target ship 200 is sailing. In the sensor evaluation device 100, the evaluation unit 14 (see FIG. 4) evaluates the second water quality sensor 80 based on the second water quality measurement value Q2 of the second water quality sensor 80 (see FIG. 1) and the water quality standard value Qs. . Therefore, even when the target ship 200 is sailing, the second water quality sensor 80 can be evaluated.

The lower limit of water quality Q2 is defined as lower limit water quality Qmin. When the water quality Q2 is pH, the lower limit water quality Qmin is, for example, pH=3.5.

The evaluation result of the second water quality sensor 80 (see FIG. 1) by the evaluation unit 14 (see FIG. 4) is referred to as evaluation result Rs. The calculation unit 18 (see FIG. 4) may calculate the time to calibrate or replace the second water quality sensor 80 based on the evaluation result Rs. The calculation unit 18 may calculate the time to calibrate or replace the second water quality sensor 80 based on the difference d. The calculation unit 18 may calculate the time tf at which the water quality Q2 reaches the lower limit water quality Qmin based on the evaluation result Rs. Time tf may be the time to replace the second water quality sensor 80.

The calculation unit 18 may calculate the calibration timing tc of the second water quality sensor 80 based on the evaluation result Rs. In this example, the calculation unit 18 calculates the calibration time tc1 and the calibration time tc2. The calibration time tc may be any time between time t1 and time td. The calculation unit 18 may calculate the number of days remaining until the replacement time tf based on the evaluation result Rs. In FIG. 8, the number of remaining days is indicated by a double-headed arrow.

The calibration time tc and the replacement time tf calculated by the calculation unit 18 may be transmitted to the target vessel 200 (see FIG. 1) by the first transmission unit 20 (see FIG. 4). The first transmitter 20 may transmit the calibration time tc and the replacement time tf to the target ship 200 via the Internet.

The calculation unit 18 (see FIG. 4) calculates the calibration time tc or replacement time tf of the second water quality sensor 80, so that the sailor of the target vessel 200 can calculate the calibration time tc or replacement time tf of the second water quality sensor 80. This can be recognized in advance at time t1. The second water quality sensor 80 may be calibrated using a calibration reference liquid at the calculated calibration time tc. This extends the life of the second water quality sensor 80. A sailor of the target vessel 200 may calibrate the second water quality sensor 80 using the calibration reference liquid.

The calibration unit 11 (see FIG. 4) may calibrate the second water quality sensor 80 based on the evaluation result Rs. The first transmitter 20 may transmit the calibration information of the second water quality sensor 80 based on the evaluation result Rs to the second receiver 56. The calibration information is information related to calibration for bringing the measured value of the water quality Q2 measured by the second water quality sensor 80 closer to the true value of the water quality Q2. The calibration information may be an instruction value of the water quality Q2, or may be a calibration amount of the water quality Q2.

The calibration unit 11 may calibrate the second water quality sensor 80 in real time while the target vessel 200 is sailing. When the calibration unit 11 calibrates the second water quality sensor 80, the sailor of the target vessel 200 does not need to calibrate the second water quality sensor 80 using the calibration reference liquid.

FIG. 9 is a diagram showing another example of the relationship between the preprocessed data in FIG. 7 and the water quality standard value Qs. In this example, the time rate of change of the measured value of the water quality Q2 increases with the elapsed time t. In FIG. 9, the relationship between the water quality standard value Qs and the elapsed time t shown in FIG. 8 is shown by a rough broken line.

The calculation unit 18 (see FIG. 4) may calculate the calibration time tf or the replacement time tc based on the change in water quality Q2 over time. The time change of the water quality Q2 may be a time change rate. Thereby, the sailor of the target vessel 200 can know in advance the calibration time tc or replacement time tf of the second water quality sensor 80 at time t1.

FIG. 10 is a diagram showing an example of the route of the target vessel 200. It is assumed that the target ship 200 is heading from port A to port B. It is assumed that the target ship 200 is scheduled to berth at port B and then head to port C. It is assumed that the current position of the target ship 200 is position P. It is assumed that the target ship 200 can sail from position P to port B along route A or route B. In this example, the sensor evaluation device 100 is placed on land in port A.

The calculation unit 18 (see FIG. 4) may calculate the calibration time tc or the replacement time tf based on the scheduled route of the target vessel 200. The calculation unit 18 may calculate the calibration time tc or the replacement time tf for each of the plurality of scheduled routes. In this example, the calculation unit 18 calculates the calibration time tc or replacement time tf for route A, and the calibration time tc or replacement time tf for route B, respectively. When the storage unit 10 (see FIG. 4) stores the first water quality measurement value Q1 for each position of the reference vessel 300 (see FIG. 5), the calculation unit 18 (see FIG. 4) calculates the calibration timing for each route. tc or replacement time tf can be calculated. The crew member of the target vessel 200 may select one of the plurality of scheduled routes based on the calculated calibration time tc or replacement time tf.

The calculation unit 18 (see FIG. 4) determines the position for replacing the second water quality sensor 80 (see FIG. 1) based on the calculated replacement time tf and the position information Ip of the target vessel 200 (see FIG. 1). You may decide. The position for replacing the second water quality sensor 80 may be the position where the target vessel 200 is scheduled to berth. In this example, the calculation unit 18 determines whether to replace the second water quality sensor 80 in port B or port C based on the replacement time tf and the position P of the target vessel 200.

When replacing the second water quality sensor 80 (see FIG. 1), the target exhaust gas treatment device 70 (see FIG. 1) is preferably stopped. For this reason, it is preferable that the second water quality sensor 80 be replaced while the target vessel 200 (see FIG. 1) is at anchor. By calculating the replacement time tf based on the evaluation result Rs of the second water quality sensor 80, the calculation unit 18 determines whether to replace the second water quality sensor 80 at port B or port C of the target ship 200. This can be determined during the voyage. The crew member of the target vessel 200 can contact the port determined by the calculation unit 18 to prepare the second water quality sensor 80 for replacement in advance.

FIG. 11 is a diagram showing another example of how the first state information Is1 and the first water quality measurement value Q1 are stored by the storage unit 10 (see FIG. 4). In this example, the storage unit 10 stores the water quality Q11 of the first liquid 174 (see FIG. 2) measured by one first water quality sensor 180-1 (see FIG. 2) and the other first water quality sensor 180-1 (see FIG. 2). -2 and the water quality Q12 of the first effluent 176 (see FIG. 2) is stored.

The evaluation unit 14 (see FIG. 4) may evaluate another second water quality sensor 80-2 based on the evaluation result Rs of one second water quality sensor 80-1 (see FIG. 1). The evaluation unit 14 evaluates the first water quality measurement value Q11, the other first water quality measurement value Q12, the output Pw value of the power plant 160 (see FIG. 2), and the evaluation result Rs of the second water quality sensor 80-1. Based on this, the other second water quality sensor 80-2 may be evaluated.

The water quality Q measured by one second water quality sensor 80-1 (see FIG. 1) is defined as water quality Q21, and the water quality Q measured by the other second water quality sensor 80-2 is defined as water quality Q22. The relationship between water quality Q21 and water quality Q22 when the target vessel 200 (see Fig. 1) is navigating at one voyage position Ps1 with one output Pw1 is as follows: The relationship between the first water quality measurement value Q11 and the first water quality measurement value Q12 is likely to be similar to the relationship between the first water quality measurement value Q11 and the first water quality measurement value Q12 when sailing at the same navigation position Ps1. Therefore, the evaluation unit 14 (see FIG. 4) evaluates one first water quality measurement value Q11, another first water quality measurement value Q12, the output Pw value of the power plant, and one second water quality sensor 80-1. The other second water quality sensor 80-2 can be evaluated based on the result Rs.

FIG. 12 is a diagram showing an example of the relationship between the target ship 210, the sensor evaluation device 100, and the sensor evaluation system 400. In FIG. 12, the range of the target vessel 210 is shown by a dashed line, and the range of the sensor evaluation system 400 is shown by a rough broken line. Target ship 210 differs from target ship 200 (see FIG. 1) in that it includes a switching section 90 and a switching section 92. The switching unit 92 switches whether the second waste liquid 76 is discharged to the outside of the target exhaust gas treatment device 70 or whether the second waste liquid 76 is reintroduced into the target exhaust gas treatment device 70. The switching unit 90 switches whether the second liquid 74 or the second waste liquid 76 is introduced into the target exhaust gas treatment device 70. The switching section 90 and the switching section 92 are, for example, three-way valves.

When the second waste liquid 76 is reintroduced to the target exhaust gas treatment device 70, the second waste liquid 76 circulates through the pump 72, the target exhaust gas treatment device 70, the switching section 92, and the switching section 90. The method in which the second drainage liquid 76 is circulated in this manner is called a so-called closed loop method. A system in which the second drainage liquid 76 is not circulated is called a so-called open loop system.

The evaluation unit 14 (see FIG. 4) may evaluate another second water quality sensor 80-2 based on the evaluation result Rs of one second water quality sensor 80-1. In the case of the closed loop method, the water quality Q of the second drained liquid 76 is likely to deteriorate as the second drained liquid 76 is circulated. Therefore, it is preferable that the other second water quality sensor 80-2 be evaluated based on the evaluation result Rs of the one second water quality sensor 80-1.

FIG. 13 is a diagram showing another example of the relationship between the target ship 200, the sensor evaluation device 100, and the sensor evaluation system 400. In this example, the target ship 200 has the calibration section 11. In this example, the sensor evaluation device 100 does not need to have the calibration section 11.

The first transmitter 20 (see FIG. 4) of the sensor evaluation device 100 transmits the evaluation result Rs of the second water quality sensor 80 by the evaluation section 14 (see FIG. 4) to the target ship 200. The second receiving unit 56 receives the evaluation result Rs. In this example, the calibration unit 11 of the target ship 200 calibrates the second water quality sensor 80 based on the evaluation result Rs. The calibration unit 11 may calibrate the second water quality sensor 80 in real time while the target vessel 200 is sailing.

FIG. 14 is a diagram showing an example of the evaluation inference model 110. The evaluation inference model 110 calculates the second water quality measurement value Q2 of the second water quality sensor 80 by machine learning the relationship between the first water quality measurement value Q1 and the water quality standard value Qs and the evaluation result Rs of the second water quality sensor 80. is input, evaluation inference data indicating the evaluation result Rs for the second water quality measurement value Q2 is output.

FIG. 15 is a block diagram showing another example of the sensor evaluation device 100 according to one embodiment of the present invention. In this example, the storage unit 10 includes an evaluation learning unit 19. The evaluation learning unit 19 generates an evaluation inference model 110 (see FIG. 14). The evaluation inference model 110 performs machine learning on the relationship between the first water quality measurement value Q1, the water quality standard value Qs, and the evaluation result Rs of the second water quality sensor 80. Therefore, the reliability of the evaluation result Rs for the second water quality measurement value Q2 is easily improved.

FIG. 16 is a flowchart illustrating an example of a sensor evaluation method according to one embodiment of the present invention. A sensor evaluation method according to one embodiment of the present invention will be explained using the reference ship 300 and sensor evaluation device 100 shown in FIG. 2 as an example. The sensor evaluation method includes a storage step S100. The sensor evaluation method may include a first state information acquisition step S200, a state selection step S202, a data processing step S204, a first water quality measurement value calculation step S206, and a determination step S208.

The first status information acquisition step S200 is a step in which the first receiving unit 22 (see FIG. 4) acquires first status information Is1 indicating the status of one or more reference vessels 300 from the reference vessels 300. The state selection step S202 is a step in which the generation unit 12 (see FIG. 4) selects the first state information Is1 for which the first water quality measurement value Q1 is calculated.

The first state information Is1, which is not a target for calculating the first water quality standard value Q1, may include a case where the output of the power plant 160 (see FIG. 2) is zero. The first state information Is1, which is not a target for generating the first water quality reference value Q1, may include a case where the flow rate of the first liquid 174 or the flow rate of the first drained liquid 176 is zero. When the first water quality sensor 180 is a pH sensor, the excluded first state information Is1 may further include first state information Is1 corresponding to data in which the pH is measured as 3.5 or less.

The state selection step S202 may include a step in which the position information acquisition unit 158 (see FIG. 2) acquires the position information Ip' of the reference vessel 300. The state selection step S202 may include a step in which the position information acquisition unit 158 (see FIG. 2) acquires the distance between the nautical position of the reference vessel 300 and the land closest to the nautical position. The state selection step S202 may be a step in which the generation unit 12 (see FIG. 4) selects the first state information Is1 for which the first water quality measurement value Q1 is calculated based on the distance.

The data processing step S204 is a step in which the evaluation unit 14 (see FIG. 4) performs preprocessing on the water quality measurement data of the first liquid 174 or the first waste liquid 176 measured by the first water quality sensor 180. The pre-processing may be an averaging process for the water quality measurement data of the first liquid 174 or the first drained liquid 176. The averaging process may be a process of averaging the measured values of the water quality Q1 over 12 hours. The averaging process may be performed over a period from a predetermined time in the past to the present. The relevant point in the past is, for example, four months ago.

The first water quality measurement value calculation step S206 is a step of calculating the first water quality measurement value Q1 when the reference vessel 300 is in the state shown in the first state information Is1. In the first water quality measurement value calculation step S206, the calculation unit 18 (see FIG. 4) calculates the first water quality measurement value from the water quality measurement data of the first liquid 174 or the first waste liquid 176 processed in the data processing step S204. This may be a step of calculating Q1.

Storage step S100 is a step in which the storage unit 10 (see FIG. 4) stores the first state information Is1 and the first water quality measurement value Q1 calculated in the first water quality measurement value calculation step S206. The storage step S100 may be a step of storing the first state information Is1 and the first water quality measurement value Q1 for each of the plurality of reference vessels 300. In the storage step S100, the first state information Is1 and the first water quality measurement value Q1 may be stored in the manner shown in FIG. 5 or FIG. 11.

Determination step S208 is a step in which the control unit 16 (see FIG. 4) determines whether to continue measuring the water quality of the first liquid 174 or the first waste liquid 176 using the first water quality sensor 180. In the determination step S208, the control unit 16 determines whether sufficient water quality data of the first liquid 174 or the first waste liquid 176 has been acquired to evaluate the second water quality sensor 80 in the evaluation step S104 (described later). It may be a step.

If it is determined in the determination step S208 that water quality measurement is to be continued, the sensor evaluation method returns to the first status information acquisition step S200. If it is determined in the determination step S208 that the water quality measurement is not to be continued, the sensor evaluation method ends the water quality measurement of the first liquid 174 or the first waste liquid 176.

FIG. 17 is a flowchart illustrating an example of a sensor evaluation method according to one embodiment of the present invention. A sensor evaluation method according to one embodiment of the present invention will be explained using the target ship 200 and sensor evaluation device 100 shown in FIG. 1 as an example. The sensor evaluation method includes a storage step S100, a generation step S102, and an evaluation step S104. The sensor evaluation method may include a second status information acquisition step S90, a status selection step S92, and a data processing step S94.

The second status information acquisition step S90 is a step in which the first receiving unit 22 (see FIG. 4) acquires second status information Is2 indicating the status of the target vessel 200 from the target vessel 200. The state selection step S92 is a step in which the generation unit 12 (see FIG. 4) selects the second state information Is2 for which the water quality standard value Qs is to be generated.

The state selection step S92 may include a step in which the position information acquisition unit 58 (see FIG. 1) acquires the position information Ip of the target vessel 200. The state selection step S92 may include a step in which the position information acquisition unit 58 acquires the distance between the voyage position of the target vessel 200 and the land closest to the voyage position. The state selection step S92 may be a step in which the generation unit 12 (see FIG. 4) selects the second state information Is2 for which the water quality standard value Qs is to be generated based on the distance.

The data processing step S94 includes the second liquid 74 (see FIG. 1) or the second waste liquid 76 measured by the second water quality sensor 80 (see FIG. 1) in the state of the target vessel 200 selected in the state selection step S92. This is a step in which the evaluation unit 14 (see FIG. 4) performs data processing on the water quality measurement data (see FIG. 1). The data processing may include averaging processing of the water quality measurement data of the second liquid 74 or the second waste liquid 76.

The generation step S102 is based on the second state information Is2, the first state information Is1 and the first water quality measurement value Q1 stored in the storage step S100, and the target vessel 200 is in the state shown in the second state information Is2. This is a step of generating a water quality standard value Qs in a certain case. In the evaluation step S104, the evaluation unit 14 (see FIG. 4) evaluates the second water quality sensor 80 based on the second water quality measurement value Q2 of the second water quality sensor 80 (see FIG. 1) and the water quality standard value Qs. This step is to

The evaluation step S104 may be a step in which the evaluation unit 14 (see FIG. 4) determines whether the second water quality sensor 80 (see FIG. 1) should be calibrated. The evaluation unit 14 may evaluate the second water quality sensor 80 based on the difference d (see FIG. 8). The difference d is the difference between the second water quality measurement value Q2 and the water quality standard value Qs as described above. In this example, if the difference d is evaluated to be equal to or greater than the predetermined threshold d _th in the evaluation step S104, the sensor evaluation method proceeds to notification step S106, and in the evaluation step S104, the difference d is evaluated to be equal to or greater than the predetermined threshold d _th. If it is evaluated to be less than 1, the sensor evaluation method proceeds to calculation step S108.

The notification step S106 is a step in which the control unit 16 (see FIG. 4) notifies a warning that the second water quality sensor 80 (see FIG. 1) should be calibrated. The warning may be notified to the crew of the target ship 200. After the notification step S106, the sensor evaluation method proceeds to a calculation step S108.

In the calculation step S108, the calculation unit 18 (see FIG. 4) determines the calibration timing tc (see FIG. 8) of the second water quality sensor 80 based on the evaluation result Rs of the second water quality sensor 80 (see FIG. 1) in the evaluation step S104. ) or the replacement time tf (see FIG. 8). In the calculation step S108, the evaluation unit 14 (see FIG. 4) applies the second water quality sensor to the water quality measurement data of the first liquid 174 or the first waste liquid 176 that has been averaged in the data processing step S204 (see FIG. 16). The method may include a step of adding the water quality measurement data of the second liquid 74 or the second waste liquid 76 measured by 80, and a step of performing averaging processing again on the water quality measurement data after the addition.

In the calculation step S108, the calculation unit 18 (see FIG. 4) determines the calibration time tc (see FIG. 8) or the replacement time tf (see FIG. 8) of the second water quality sensor 80 based on the water quality measurement data that has been averaged again. This may be a step of calculating (reference). The calculation step S108 may include a step in which the calculation unit 18 calculates the number of days remaining until the replacement time tf based on the evaluation result Rs. After calculation step S108, the sensor evaluation method proceeds to determination step S110.

In the determination step S110, the evaluation unit 14 (see FIG. 4) determines whether the second water quality sensor 80 (see FIG. 1) should be calibrated or replaced based on the calibration time tc or replacement time tf calculated in the calculation step S108. This may be a step of determining. If it is determined in determination step S110 that the second water quality sensor 80 should be calibrated or replaced, the sensor evaluation method proceeds to notification step S112. If it is not determined in the determination step S110 that the second water quality sensor 80 should be calibrated or replaced, the sensor evaluation method ends the evaluation of the second water quality sensor 80.

The notification step S112 is a step in which the control unit 16 (see FIG. 4) notifies a warning that the second water quality sensor 80 (see FIG. 1) should be calibrated or replaced. The warning may be notified to the crew of the target ship 200. The warning that the second water quality sensor 80 should be replaced may include a notification that a new second water quality sensor 80 should be prepared. After the notification step S112, the sensor evaluation method ends the evaluation of the second water quality sensor 80.

FIG. 18 is a diagram illustrating an example of a computer 2200 in which the sensor evaluation device 100 or the sensor evaluation system 400 according to one embodiment of the present invention may be implemented in whole or in part. The program installed on the computer 2200 allows the computer 2200 to perform operations associated with the sensor evaluation device 100 or the sensor evaluation system 400 according to the embodiment of the present invention, or one or more of the sensor evaluation devices 100 or the sensor evaluation system 400. The computer 2200 can act as a section or perform the operation or one or more sections, or the computer 2200 can perform the steps (see FIGS. 16 and 17) of the sensor evaluation method of the present invention. can be done. The program may cause the computer 2200 to execute some or all of the blocks in the flowcharts (FIGS. 16 and 17) and block diagrams (FIGS. 1-4, FIGS. 12, 13, and 15) described herein. may be executed by the CPU 2212 to cause certain operations associated with the operations to be performed.

Computer 2200 according to one embodiment of the invention includes a CPU 2212, RAM 2214, graphics controller 2216, and display device 2218. CPU 2212, RAM 2214, graphics controller 2216, and display device 2218 are interconnected by host controller 2210. Computer 2200 further includes input/output units such as a communication interface 2222, a hard disk drive 2224, a DVD-ROM drive 2226, and an IC card drive. The communication interface 2222, hard disk drive 2224, DVD-ROM drive 2226, IC card drive, etc. are connected to the host controller 2210 via the input/output controller 2220. The computer further includes legacy input/output units such as ROM 2230 and keyboard 2242. ROM 2230, keyboard 2242, etc. are connected to input/output controller 2220 via input/output chip 2240.

CPU 2212 controls each unit by operating according to programs stored in ROM 2230 and RAM 2214. Graphics controller 2216 obtains image data generated by CPU 2212 into a frame buffer or the like provided in RAM 2214 so that the image data is displayed on display device 2218 .

Communication interface 2222 communicates with other electronic devices via a network. Hard disk drive 2224 stores programs and data used by CPU 2212 within computer 2200. DVD-ROM drive 2226 reads a program or data from DVD-ROM 2201 and provides the read program or data to hard disk drive 2224 via RAM 2214. An IC card drive reads programs and data from an IC card or writes programs and data to an IC card.

ROM 2230 stores a boot program or the like executed by computer 2200 upon activation, or a program dependent on the hardware of computer 2200. Input/output chip 2240 may connect various input/output units to input/output controller 2220 via parallel ports, serial ports, keyboard ports, mouse ports, etc.

A program is provided by a computer readable medium such as a DVD-ROM 2201 or an IC card. The program is read from a computer readable medium, installed on hard disk drive 2224, RAM 2214, or ROM 2230, which are also examples of computer readable media, and executed by CPU 2212. The information processing described in these programs is read by the computer 2200 and provides coordination between the programs and the various types of hardware resources described above. An apparatus or method may be configured according to the use of computer 2200 to effectuate manipulation or processing of information.

For example, when communication is performed between the computer 2200 and an external device, the CPU 2212 executes a communication program loaded into the RAM 2214 and sends communication processing to the communication interface 2222 based on the processing written in the communication program. You can give orders. The communication interface 2222 reads transmission data stored in a transmission buffer processing area provided in a recording medium such as a RAM 2214, a hard disk drive 2224, a DVD-ROM 2201, or an IC card under the control of the CPU 2212, and reads the transmission data that has been read. is transmitted to the network, or the received data received from the network is written to a receive buffer processing area provided on the recording medium.

The CPU 2212 may cause the RAM 2214 to read all or a necessary part of a file or database stored in an external recording medium such as a hard disk drive 2224, a DVD-ROM drive 2226 (DVD-ROM 2201), an IC card, or the like. CPU 2212 may perform various types of processing on data on RAM 2214. CPU 2212 may then write back the processed data to an external storage medium.

Various types of information such as various types of programs, data, tables, and databases may be stored and processed on a recording medium. CPU 2212 performs various types of operations, information processing, conditional determination, conditional branching, unconditional branching, information retrieval, or Various types of processing may be performed, including substitutions and the like. The CPU 2212 may write back the results to the RAM 2214.

The CPU 2212 may search for information in a file in a recording medium, a database, or the like. For example, if a plurality of entries are stored in the recording medium, each having an attribute value of a first attribute associated with an attribute value of a second attribute, the CPU 2212 search for an entry that matches the condition from among the plurality of entries, read the attribute value of the second attribute stored in the entry, and read the second attribute value to meet the predetermined condition. You may obtain the attribute value of the second attribute associated with the first attribute that satisfies.

The programs or software modules described above may be stored on computer 2200 or in a computer readable medium of computer 2200. A storage medium such as a hard disk or RAM provided in a server system connected to a private communication network or the Internet can be used as the computer-readable medium. The program may be provided to the computer 2200 by the recording medium.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the range described in the above embodiments. It will be apparent to those skilled in the art that various changes or improvements can be made to the embodiments described above. It is clear from the claims that such modifications or improvements may be included within the technical scope of the present invention.

The order of execution of each process, such as the operation, procedure, step, and stage in the apparatus, system, program, and method shown in the claims, specification, and drawings, is specifically defined as "before" or "before". It should be noted that they can be implemented in any order unless the output of the previous process is used in the subsequent process. Even if the claims, specifications, and operational flows in the drawings are explained using "first," "next," etc. for convenience, this does not mean that it is essential to carry out the operations in this order. It's not a thing.

10... Storage unit, 11... Calibration unit, 12... Generation unit, 14... Evaluation unit, 16... Control unit, 18... Calculation unit, 19... Evaluation learning unit, 20... First transmitting section, 22... First receiving section, 50... Control section, 52... Data collecting section, 54... Second transmitting section, 56... Second receiving section , 58... Position information acquisition unit, 60... Power unit, 62... Second exhaust gas, 64... Exhaust gas, 70... Target exhaust gas treatment device, 72... Pump, 74... Second liquid, 76... Second drain liquid, 80... Second water quality sensor, 82... Gas sensor, 90... Switching section, 92... Switching section, 100... Sensor evaluation device, 110...Evaluation inference model, 150...Control unit, 152...Data collection unit, 154...Second transmitter, 156...Second receiver, 158...Position information acquisition unit, 160... Power device, 162... First exhaust gas, 164... Exhaust gas, 170... Reference exhaust gas treatment device, 172... Pump, 174... First liquid, 176... First Drainage liquid, 180... First water quality sensor, 182... Gas sensor, 200... Target vessel, 210... Target vessel, 300... Reference vessel, 400... Sensor evaluation system, 2200... - Computer, 2201...DVD-ROM, 2210...Host controller, 2212...CPU, 2214...RAM, 2216...Graphic controller, 2218...Display device, 2220...I/O Controller, 2222... Communication interface, 2224... Hard disk drive, 2226... DVD-ROM drive, 2230... ROM, 2240... Input/output chip, 2242... Keyboard

Claims (16)

first status information indicating the status of one or more reference vessels; and a first water quality measurement value of a first water quality sensor possessed by the reference vessel, where the reference vessel is in the status indicated by the first status information. a storage unit that stores a first water quality measurement value;
Based on second state information indicating the state of the target ship, the first state information, and the first water quality measurement value, determine a water quality standard value when the target ship is in the state indicated by the second state information. a generation unit that generates;
an evaluation unit that evaluates the second water quality sensor based on a second water quality measurement value of a second water quality sensor included in the target ship and the water quality reference value;
A sensor evaluation device comprising: The sensor evaluation device according to claim 1, further comprising a calculation unit that calculates when to calibrate or replace the second water quality sensor based on the evaluation result of the second water quality sensor by the evaluation unit. The sensor evaluation device according to claim 2, wherein the calculation unit calculates the calibration time or the replacement time based on a temporal change in the second water quality measurement value of the second water quality sensor. The sensor evaluation device according to claim 2, wherein the calculation unit calculates the calibration time or the replacement time based further on a scheduled route of the target ship. The first status information includes information on the nautical position of the reference vessel,
The storage unit stores the nautical position of the reference vessel and the first water quality measurement value when the reference vessel is at the voyage position,
The second status information includes information on the nautical position of the target vessel,
The generation unit generates the water quality reference value based on the navigation position of the target ship, the navigation position of the reference ship, and the first water quality measurement value when the reference ship is at the navigation position. generate,
The sensor evaluation device according to any one of claims 1 to 4. The second status information includes information on the nautical position of the target vessel,
The generation unit selects a state of the target ship for which the water quality standard value is to be generated based on information on the nautical position of the target ship, and generates the water quality standard when the target ship is in the selected state. generate a value,
The sensor evaluation device according to any one of claims 2 to 4. The sensor evaluation device according to claim 6, wherein the calculation unit determines a position for replacing the second water quality sensor based on the calculated replacement time and information on the voyage position of the target ship. The sensor evaluation device according to claim 1, further comprising a calibration section that calibrates the second water quality sensor based on the evaluation result of the second water quality sensor by the evaluation section. A second liquid and a second exhaust gas are introduced into the target vessel, the second exhaust gas is treated with the second liquid, and the second exhaust gas is treated with the second liquid, and a second exhaust liquid is discharged. It has a processing device,
One of the second water quality sensors measures the water quality of the second liquid, and the other second water quality sensor measures the water quality of the second waste liquid,
The evaluation unit evaluates the other second water quality sensor based on the evaluation result of one of the second water quality sensors.
The sensor evaluation device according to any one of claims 1 to 4. The first state information includes an output value of a power unit that discharges a first exhaust gas, the first exhaust gas being introduced into a reference exhaust gas treatment device included in the reference vessel,
In the storage unit,
The first liquid introduced into the reference exhaust gas treatment device has one of the first water quality measurements measured by one of the first water quality sensors;
The first waste gas is treated with the first liquid, and the first waste liquid discharged by the reference waste gas treatment device has another first water quality measurement value measured by another first water quality sensor,
an output value of the power plant;
is memorized,
The evaluation unit evaluates the other water quality based on one of the first water quality measurement values, the other of the first water quality measurement values, the output value of the power plant, and the evaluation result of the one of the second water quality sensors. 2 Evaluate the water quality sensor,
The sensor evaluation device according to claim 9. The storage unit receives the second water quality measurement value of the second water quality sensor by performing machine learning on the relationship between the first water quality measurement value, the water quality reference value, and the evaluation result of the second water quality sensor. The sensor evaluation device according to any one of claims 1 to 4, further comprising an evaluation learning unit that generates an evaluation inference model that outputs evaluation inference data indicating an evaluation result for the second water quality measurement value when the second water quality measurement value is evaluated. The sensor evaluation device according to any one of claims 1 to 4,
a second transmitter included in the target vessel, the second transmitter transmitting a second water quality measurement value of the second water quality sensor to the sensor evaluation device;
Equipped with
The sensor evaluation device includes a first transmitter that transmits the evaluation result of the second water quality sensor by the evaluation unit to the target ship.
Sensor evaluation system. The sensor evaluation device according to claim 5,
a position information acquisition unit included in the target ship, the position information acquisition unit acquiring information on the voyage position of the target ship;
A second transmitting unit included in the target ship, the second transmitting unit transmitting a second water quality measurement value of the second water quality sensor and information on the voyage position of the target ship to the sensor evaluation device. a second transmitter,
Equipped with
The sensor evaluation device includes a first transmitter that transmits the evaluation result of the second water quality sensor by the evaluation unit to the target ship.
Sensor evaluation system. 14. The calibration unit of the target ship, further comprising a calibration unit that calibrates the second water quality sensor based on the evaluation result of the second water quality sensor by the evaluation unit. Sensor evaluation system described. The storage unit stores first status information indicating the status of one or more reference vessels, and a first water quality measurement value of a first water quality sensor possessed by the reference vessel, and the reference vessel is indicated in the first status information. a storing step of storing the first water quality measurement value when the condition is the same;
The generation unit is configured to generate, based on second state information indicating the state of the target ship, the first state information, and the first water quality measurement value, when the target ship is in the state indicated by the second state information. a generation step of generating a water quality standard value;
an evaluation step in which the evaluation unit evaluates the second water quality sensor based on a second water quality measurement value of a second water quality sensor included in the target ship and the water quality reference value;
A sensor evaluation method comprising: A sensor evaluation program for causing a computer to function as the sensor evaluation device according to any one of claims 1 to 4.

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