Wireless corrosion sensor and corrosion monitoring system comprising same

Abstract

The utility model discloses a wireless corrosion sensor and a corrosion monitoring system comprising the same, the wireless corrosion sensor comprises a wireless charging device and a wireless corrosion sensor, the wireless charging device is fixedly arranged on an ocean platform jacket, and the wireless corrosion sensor is detachably arranged on the ocean platform jacket. The wireless corrosion sensor comprises a corrosion detection unit, a wireless transmission unit and a receiving coil; the corrosion detection unit is used for detecting the corrosion state of a detected object and generating a detection signal; the wireless transmission unit is used for receiving the detection signal and sending a wireless signal to a far end; the receiving coil is used for inducing the alternating magnetic field and generating induced current. According to the utility model, the charging device fixed on the jacket is used for supplying power to the wireless corrosion sensor, so that the effective separation of a power supply part and a power utilization part is realized, the wireless corrosion sensor can be conveniently detached and replaced when the wireless corrosion sensor fails, and the problem that the sensor cannot be maintained and replaced due to the fact that the sensor and a cable cannot be detached is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of corrosion monitoring, in particular to a wireless corrosion sensor and a corrosion monitoring system containing the sensor. Background Art

[0002] With the continuous and in-depth development of marine resources by humans, more and more marine engineering equipment has been installed in various sea areas. Monitoring the safe and stable operation of marine engineering equipment at sea is a goal that all countries are constantly pursuing at this stage. At present, underwater monitoring of marine engineering equipment is mainly carried out by setting up marine engineering safety facilities, using marine engineering safety facilities to monitor the operating status of marine engineering equipment in real time; and regular underwater special inspections to evaluate the safety of underwater structures. Marine engineering safety facilities are generally required to have the same service life as marine engineering equipment to ensure the normal operation of marine engineering equipment. However, some facilities that lack underwater safety monitoring devices require underwater special inspections every three years. For marine engineering equipment that has exceeded its service life, underwater special inspections may even be required every year.

[0003] Taking the offshore oil platform as an example, the corrosion monitoring of the underwater part of the jacket of the offshore oil platform is currently mainly achieved by using a preset monitoring system. The monitoring system usually includes a variety of different sensors, such as corrosion sensors, water environment sensors, etc. The offshore oil platform installs potential and current probes on the underwater part of the jacket to monitor the potential and current values ​​at different depths to determine whether the jacket is well protected. The monitoring system transmits the instantaneous current value of the jacket to the main control computer of the central control via a data cable, so that the corrosion condition of the jacket can be monitored in real time, the corrosion state of the underwater part of the jacket can be judged, and the corrosion parameters in deep water can be accumulated to provide data basis for the corrosion environment survey in this sea area.

[0004] However, since the underwater sensors are installed together with the main steel structure on land before being put into service at sea. According to the construction requirements, the signal cables and power supply cables of the sensors need to be laid on the main steel structure in a pipe-through manner, and the connection between the cable ends and the sensors must be watertight, thereby ensuring that the sensors can work normally in the marine environment. The above-mentioned fixed installation design requires that the cables and sensors are an integrated structure. After the construction is completed and the sensors are put into the water, the sensors and cables cannot be disassembled, that is, the sensors cannot be maintained and replaced. In actual projects, in order to prevent accidental failure of sensors, multiple sensors are usually deployed at key nodes as backup to each other to extend the monitoring life as much as possible, but the problem of missing monitoring data at key nodes cannot be avoided. When replacing sensors, a large amount of diving operations such as underwater welding, wiring, and riveting are required, which makes the construction difficult and expensive. Utility Model Content

[0005] The problem to be solved by the utility model is to provide a wireless corrosion sensor and a corrosion monitoring system containing the sensor, wherein the wireless corrosion sensor and the object to be measured are arranged to be detachably connected, thereby avoiding the defect of traditional technology that requires the deployment of multiple spare sensors, simplifying the system design, avoiding a large number of diving operations during replacement, reducing construction difficulty, and reducing monitoring costs.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a wireless corrosion sensor, including a shell, the shell is made of corrosion-resistant and waterproof material, a receiving space is arranged inside the shell, the receiving space passes through one end of the shell and is connected to the outside, the other end of the shell is provided with an end face connected to the side of the shell, the shell is coaxial with the receiving space, an integrated circuit board is arranged in the receiving space, the integrated circuit board is provided with a corrosion detection unit, a receiving coil and a wireless transmission unit from the inside to the outside, the corrosion detection unit is fully or partially placed in the receiving space, the corrosion detection unit is used to detect the corrosion state of the object to be measured and generate a detection signal; the wireless transmission unit is used to receive the detection signal and send a wireless signal to a remote end; the receiving coil is used to induce an alternating magnetic field and generate an induced current, the induced current is used to power the corrosion detection unit and the wireless transmission unit respectively, and the wireless corrosion sensor is detachably connected to the object to be measured.

[0007] Furthermore, the wireless corrosion sensor also includes a rectification and filtering unit, which rectifies and filters the induced current to obtain a direct current, and the direct current is used to power the corrosion detection unit and the wireless transmission unit respectively.

[0008] Furthermore, the rectification and filtering unit includes a rectifier bridge and a filter capacitor, the rectifier bridge is used to rectify the induced current to obtain a direct current; the filter capacitor is electrically connected to the rectifier bridge, and the filter capacitor is used to filter the direct current.

[0009] Furthermore, the corrosion detection unit is a high-purity zinc electrode.

[0010] Furthermore, the wireless transmission unit includes one or more of a GSM module, a Bluetooth module, and a WIFI module.

[0011] Furthermore, the wireless corrosion sensor also includes a battery, which is placed between the receiving coil and the corrosion detection unit. The battery is electrically connected to the corrosion detection unit, the wireless transmission unit and the receiving coil respectively, and the battery is used to provide a backup power supply for the wireless corrosion sensor.

[0012] Furthermore, the utility model also provides a corrosion monitoring system containing a wireless corrosion sensor, utilizing the above-mentioned wireless corrosion sensor, including a wireless charging device, wherein the wireless charging device is fixedly mounted on the marine platform conductor frame; the wireless corrosion sensor is detachably mounted on the marine platform conductor frame, and the wireless charging device supplies power to the wireless corrosion sensor, thereby ensuring that the wireless corrosion sensor monitors the corrosion condition of the underwater part of the marine platform conductor frame in real time.

[0013] Furthermore, the wireless charging device also includes a power conversion module and a transmitting coil, the input end of the power conversion module is connected to a 220V AC power supply; the transmitting coil is connected to the output end of the power conversion module, and the transmitting coil generates an alternating magnetic field.

[0014] Furthermore, the catheter rack includes a catheter and a flange, the flange is welded to one end of the catheter, one end of the wireless charging device is connected to the flange by bolts, and the other end of the wireless charging device is connected to the wireless corrosion sensor by bolts.

[0015] The advantages and positive effects of the utility model are:

[0016] 1. The offshore platform corrosion monitoring system provided by the utility model uses a charging device fixed on the conductor frame to power the wireless corrosion sensor, thereby realizing the effective separation of the power supply part and the power consumption part. When the wireless corrosion sensor fails, it only needs to be disassembled and replaced, thus overcoming the problem in traditional technology that the sensor and the cable cannot be separated, resulting in the inability to maintain and replace the sensor.

[0017] 2. The wireless corrosion sensor provided by the utility model can generate an induced current through a receiving coil and then power each unit in the sensor. It can be effectively applied to special application scenarios such as offshore platforms, avoiding the connection between the cable end and the sensor, and adopting a signal wireless transmission mode, which is more conducive to disassembly, assembly and replacement.

[0018] 3. The utility model uses a rectifying and filtering unit to rectify and filter the induced current to obtain a direct current, which can provide a stable power supply for each unit in the sensor to ensure its normal operation.

[0019] 4. The utility model adopts a rectifier bridge to rectify the induced current, which has the advantages of mature technology and easy implementation; the utility model adopts a filter capacitor to filter, which has the advantages of simple structure and easy operation.

[0020] 5. The utility model can realize short-distance or long-distance signal transmission by adopting different wireless transmission units, ensuring the timeliness of sensor signal collection and strong practicality.

[0021] 6. The utility model ensures the normal operation of the sensor under special circumstances by building a backup power supply into the sensor, thereby avoiding the interruption of the detection signal due to accidents.

[0022] 7. The utility model sets the wireless charging device on the flange to ensure its stability. By using a 220V AC power supply in conjunction with a power conversion module, the advantage is that the technology is mature and the cable layout can be simplified as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the wireless corrosion sensor of the utility model.

[0024] Figure 2 It is a structural schematic diagram of a rectifier and filter unit of an embodiment of the utility model wireless corrosion sensor.

[0025] Figure 3 It is an overall principle diagram of an embodiment of the corrosion monitoring system of the utility model.

[0026] Figure 4 It is a schematic diagram of the overall structure of an embodiment of the corrosion monitoring system of the utility model.

[0027] Figure 5 It is a schematic diagram of the installation of the transmitting coil of the corrosion monitoring system embodiment of the utility model.

[0028] Figure 6 , Figure 7 It is a schematic diagram of the installation of the wireless corrosion sensor of the corrosion monitoring system embodiment of the utility model.

[0029] In the figure:

[0030] 1. Wireless corrosion sensor; 11. Housing; 12. Wireless transmission unit; 13. Receiving coil; 14. Battery; 15. Corrosion detection unit;

[0031] 2. Wireless charging device; 21. Transmitting coil; 22. Bolt;

[0032] 3. pipe rack; 31. pipe; 32. flange;

[0033] 4. Pile foundation;

[0034] 5. Tower. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0039] like Figure 1 As shown, a wireless corrosion sensor 1 includes a housing 11, and a receiving space is provided in the housing 11. The receiving space runs through the cylindrical interior of the housing 11 from one side of the housing 11, so that the cross section of the housing 11 is set in a "U" shape. The housing 11 and the receiving space are both cylindrical and coaxial. The housing 11 provided in this embodiment is made of corrosion-resistant and waterproof material, which is convenient for adapting to the marine environment. An integrated circuit board is provided in the receiving space, such as Figure 1 As shown, the integrated circuit board is provided with a corrosion detection unit 15, a receiving coil 13 and a wireless transmission unit 12 in sequence from the inside to the outside, wherein the corrosion detection unit 15 can be partially placed in the receiving space or can be completely placed in the receiving space.

[0040] Among them, the corrosion detection unit 15 is used to detect the corrosion state of the object to be detected and generate a detection signal; the wireless transmission unit 12 is used to receive the detection signal and send a wireless signal to a remote end; the receiving coil 13 is used to induce an alternating magnetic field and generate an induced current, which is used to power the corrosion detection unit 15 and the wireless transmission unit 12. The wireless corrosion sensor 1 provided in this embodiment adopts underwater wireless magnetic induction communication technology to realize a wireless network connection between the wireless corrosion sensor 1 and the cable, so that the wireless corrosion sensor 1 is detachably connected to the object to be detected, which is convenient for the disassembly and maintenance of the wireless corrosion sensor 1.

[0041] In this embodiment, the corrosion detection unit 15 is used to detect the corrosion state of the underwater part of the marine platform jacket 3 and generate a detection signal. Specifically, the corrosion detection unit 15 provided in this embodiment includes but is not limited to a high-purity zinc electrode, which is connected to the marine platform jacket 3. There is a potential difference between the marine platform jacket 3 and the zinc electrode. By measuring the potential difference between the high-purity zinc electrode and the marine platform jacket 3, the corrosion state of the marine platform jacket 3 is obtained.

[0042] The wireless transmission unit 12 is used to receive the detection signal and send the wireless signal to the remote end. Specifically, the wireless transmission unit 12 provided in this embodiment is a GSM module, and the GSM module uses GPRS data transmission to send the wireless signal to the remote end. The wireless transmission unit 12 can also be a Bluetooth module, and the wireless corrosion sensor 1 can be paired with the receiving end in advance. The communication between the wireless corrosion sensor 1 and the receiving end is carried out in a short-range network, and the effect of wireless signal transmission can also be achieved. The wireless transmission unit 12 can also be a WIFI module, and its specific working principle can refer to the prior art, which will not be repeated here. The utility model can realize short-distance or long-distance signal transmission by adopting different wireless transmission units 12, thereby ensuring the timeliness of sensor signal acquisition.

[0043] The receiving coil 13 is used to induce an alternating magnetic field and generate an induced current, and the induced current is used to power the corrosion detection unit 15 and the wireless transmission unit 12 respectively. Specifically, the receiving coil 13 provided in this embodiment can adopt an anti-interference receiving coil 13, the number of turns of the receiving coil 13 is at least 10Ts, the wire diameter can be 0.08×80P, the inductance can be 6Uh and the upper and lower errors do not exceed 10%, and a magnetic isolation sheet can be provided on one side of the receiving coil 13 to ensure that other parts of the wireless corrosion sensor 1 can work normally. The wireless corrosion sensor 1 provided by the utility model can generate an induced current through the receiving coil 13 and then power each unit in the sensor. It can be effectively applied to special application scenarios such as offshore oil platforms, avoids the connection between the cable end and the sensor, and adopts a signal wireless transmission mode, which is more conducive to disassembly and replacement.

[0044] Specifically, the wireless corrosion sensor 1 provided in this embodiment also includes a rectifying and filtering unit, which rectifies and filters the induced current to obtain a direct current, and the direct current is used to power the corrosion detection unit 15 and the wireless transmission unit 12 to ensure their normal operation. Preferably, the rectifying and filtering unit includes a rectifier bridge and a filter capacitor, and the rectifier bridge is used to rectify the induced current to obtain a direct current. Figure 2 As shown, the rectifier bridge provided in this embodiment includes a diode D1, a diode D2, a diode D3 and a diode D4 packaged together, and the diode D1, the diode D2, the diode D3 and the diode D4 are connected by Figure 2 The bridge rectifier circuit is formed in the manner shown; in addition, the rectifier filter unit also includes a filter capacitor C1, which is connected to the output end of the rectifier bridge, and the filter capacitor C1 is used to filter the DC current. The utility model adopts a rectifier bridge to rectify the inductive current, which has the advantage of mature technology; the filter capacitor C1 is used for filtering, which has the advantage of simple structure and easy implementation.

[0045] Preferably, Figure 1 As shown, the wireless corrosion sensor 1 provided in this embodiment also includes a battery 14. The battery 14 is placed between the receiving coil 13 and the corrosion detection unit 15, and is electrically connected to the corrosion detection unit 15, the wireless transmission unit 12 and the receiving coil 13 respectively. The battery 14 is used to provide a backup power supply for the wireless corrosion sensor 1. The utility model ensures the normal operation of the sensor in special circumstances such as power failure by building a backup battery 14 into the sensor, thereby avoiding accidental interruption of the detection signal. Preferably, the battery 14 includes but is not limited to a lithium battery, and other types of batteries may also be used, which will not be described here.

[0046] like Figure 3-7 As shown, a marine platform corrosion monitoring system containing a wireless corrosion sensor includes a wireless charging device 2 and a wireless corrosion sensor 1. The wireless charging device 2 is fixedly mounted on the marine platform conductor frame 3, and the wireless corrosion sensor 1 is detachably mounted on the marine platform conductor frame 3. The wireless charging device 2 supplies power to the wireless corrosion sensor 1 to ensure that the wireless corrosion sensor 1 monitors the corrosion of the underwater part of the marine platform conductor frame 3 in real time. This embodiment realizes the effective separation of the power supply part and the power consumption part. When the wireless corrosion sensor 1 fails, it only needs to be disassembled and replaced, which overcomes the problem in the traditional technology that the sensor and the cable cannot be separated, resulting in the inability to maintain and replace the sensor.

[0047] Specifically, the wireless charging device 2 provided in the embodiment of the utility model includes a power conversion module and a transmitting coil. The input end of the power conversion module is connected to a 220V AC power supply, wherein the power conversion module includes but is not limited to a power converter. By setting a power converter, it can be ensured that each load is at rated power and is not affected by power grid fluctuations during operation. The transmitting coil 21 is connected to the output end of the power conversion module, and the transmitting coil 21 generates an alternating magnetic field. By adopting a 220V AC power supply in combination with a power conversion module, the advantage is that the mature technology can simplify the arrangement of cables as much as possible.

[0048] Specifically, Figure 4 As shown, the jacket 3 provided by the embodiment of the utility model includes a jacket 31 and a flange 32, wherein the jacket 3 is used as a connecting section between the pile foundation 4 and the upper tower 5, and is generally connected to the tower 5 through the flange 32 and a series of bolts 22. Figure 5 As shown, the advantages of this connection method are mature technology and simple and convenient construction. Preferably, the wireless charging device 2 can be set on the flange 32, and the transmitting coil 21 of the wireless charging device 2 can be embedded in the conduit 31. The conduit 31 can be wired inside and then connected to a 220V AC power supply. By setting the wireless charging device 2 on the flange 32, its stability can be ensured. Specifically, as Figure 6 , Figure 7 As shown, in this embodiment, the flange 32 is welded to one end of the conduit 31 , one end of the wireless charging device 2 is connected to the flange 32 via a bolt 22 , and the other end of the wireless charging device 2 is connected to the wireless corrosion sensor 1 via a bolt 22 .

[0049] The working principle of the utility model includes the following steps:

[0050] S1. Provide a wireless charging device 2, which is fixed on a conductor frame 3 of an offshore platform.

[0051] Specifically, the wireless charging device 2 also includes a power supply, a power conversion module and a transmitting coil 21, wherein the power supply may include but is not limited to a 220V AC power supply. The input end of the power conversion module is connected to the output of the 220V AC power supply, wherein the power conversion module may include but is not limited to a power converter. By setting the power converter, it can be ensured that each load is operated at rated power and is not affected by power grid fluctuations. The input end of the transmitting coil 21 is connected to the output end of the power conversion module, and the transmitting coil 21 generates an alternating magnetic field under the excitation of the alternating power supply.

[0052] S2. Provide a wireless corrosion sensor 1, and provide a detachable connection between the wireless corrosion sensor 1 and the offshore platform conductor frame 3.

[0053] Specifically, the wireless corrosion sensor 1 includes a corrosion detection unit 15, a wireless transmission unit 12, a receiving coil 13 and a rectification and filtering unit; the power output end of the receiving coil 13 is connected to the power input end of the rectification and filtering unit, and the power output of the rectification and filtering unit is respectively connected to the power input of the corrosion detection unit 15 and the power input of the wireless transmission unit 12.

[0054] Specifically, the wireless transmission unit 12 is used to receive the detection signal and send a wireless signal to the remote end. The wireless transmission unit 12 includes one or more of a GSM module, a Bluetooth module, and a WIFI module. The specific working principle of each of the above modules can refer to the prior art and will not be repeated here. The utility model can realize short-range or long-range signal transmission by adopting different wireless transmission units 12, thereby ensuring the timeliness of sensor signal acquisition.

[0055] Specifically, the wireless corrosion sensor 1 also includes a receiving coil 13, which is used to induce an alternating magnetic field and generate an induced current, which is used to power the corrosion detection unit 15 and the wireless transmission unit 12. The receiving coil 13 can be an anti-interference receiving coil 13, the number of turns of the receiving coil 13 is at least 10Ts, the wire diameter can be 0.08×80P, the inductance can be 6Uh and the upper and lower errors do not exceed 10%, and a magnetic isolation sheet can be provided on one side of the receiving coil 13 to ensure that other parts of the wireless corrosion sensor 1 can work normally.

[0056] Specifically, the wireless corrosion sensor 1 further includes a rectifying and filtering unit, which rectifies and filters the induced current to obtain a direct current, and the direct current is used to power the corrosion detection unit 15 and the wireless transmission unit 12. Preferably, the rectifying and filtering unit includes a rectifier bridge and a filter capacitor, the input end of the rectifier bridge is connected to the output end of the receiving coil 13, the output end of the rectifier bridge is connected to the filter capacitor, and the rectifier bridge is used to rectify the induced current to obtain a direct current.

[0057] S3. Use the wireless charging device 2 to provide contactless power to the wireless corrosion sensor 1.

[0058] Specifically, the transmitting coil 21 of the wireless charging device 2 generates an alternating magnetic field under the action of an alternating magnetic field, and the receiving coil 13 in the wireless corrosion sensor 1 generates an alternating induced current under the action of the alternating magnetic field. The alternating induced current is then input into the rectification and filtering unit to obtain a filtered direct current, and the direct current is used to power each unit of the wireless corrosion sensor 1.

[0059] S4. Using the wireless corrosion sensor 1, the corrosion state of the offshore platform jacket 3 is monitored.

[0060] In the actual monitoring process, the corrosion detection unit 15 of the wireless corrosion sensor 1 is connected to the offshore platform jacket 3, and the corrosion detection unit 15 may include but is not limited to a high-purity zinc electrode. After power is turned on, there is a potential difference between the offshore oil platform jacket 3 and the zinc electrode. By measuring the potential difference between the high-purity zinc electrode and the offshore oil platform jacket 3, the corrosion state of the offshore oil platform jacket 3 is obtained, and then the wireless transmission unit 12 of the corrosion detection unit 15 is used to send the detection signal to the remote end. Specifically, the remote end may include but is not limited to a monitoring cabinet set on the sea surface of the offshore oil platform. Preferably, the remote end may also include a mobile or fixed terminal such as a smart phone.

[0061] The advantages and positive effects of the utility model are:

[0062] 1. The offshore platform corrosion monitoring system provided by the utility model uses a charging device fixed on the conductor frame to power the wireless corrosion sensor, thereby realizing the effective separation of the power supply part and the power consumption part. When the wireless corrosion sensor fails, it only needs to be disassembled and replaced, thus overcoming the problem in traditional technology that the sensor and the cable cannot be separated, resulting in the inability to maintain and replace the sensor.

[0063] 2. The wireless corrosion sensor provided by the utility model can generate an induced current through a receiving coil and then power each unit in the sensor. It can be effectively applied to special application scenarios such as offshore platforms, avoiding the connection between the cable end and the sensor, and adopting a signal wireless transmission mode, which is more conducive to disassembly, assembly and replacement.

[0064] 3. The utility model uses a rectifying and filtering unit to rectify and filter the induced current to obtain a direct current, which can provide a stable power supply for each unit in the sensor to ensure its normal operation.

[0065] 4. The utility model adopts a rectifier bridge to rectify the induced current, which has the advantages of mature technology and easy implementation; the utility model adopts a filter capacitor to filter, which has the advantages of simple structure and easy operation.

[0066] 5. The utility model can realize short-distance or long-distance signal transmission by adopting different wireless transmission units, ensuring the timeliness of sensor signal collection and strong practicality.

[0067] 6. The utility model ensures the normal operation of the sensor under special circumstances by building a backup power supply into the sensor, thereby avoiding the interruption of the detection signal due to accidents.

[0068] 7. The utility model sets the wireless charging device on the flange to ensure its stability. By using a 220V AC power supply in conjunction with a power conversion module, the advantage is that the technology is mature and the cable layout can be simplified as much as possible.

[0069] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A wireless corrosion sensor, characterized in that: The invention comprises a shell, which is made of corrosion-resistant and waterproof material, a receiving space is arranged inside the shell, the receiving space passes through one end of the shell and is connected with the outside, the other end of the shell is provided with an end face which is connected with the side of the shell, the shell is coaxial with the receiving space, an integrated circuit board is arranged in the receiving space, the integrated circuit board is provided with a corrosion detection unit, a receiving coil and a wireless transmission unit in sequence from the inside to the outside, the corrosion detection unit is wholly or partially placed in the receiving space, the corrosion detection unit is used to detect the corrosion state of the object to be measured and generate a detection signal; the wireless transmission unit is used to receive the detection signal and send a wireless signal to a remote end; the receiving coil is used to induce an alternating magnetic field and generate an induced current, the induced current is used to power the corrosion detection unit and the wireless transmission unit respectively, and the wireless corrosion sensor is detachably connected to the object to be measured.

2. A wireless corrosion sensor according to claim 1, characterized in that: The wireless corrosion sensor also includes a rectifying and filtering unit, which rectifies and filters the induced current to obtain a direct current, and the direct current is used to power the corrosion detection unit and the wireless transmission unit respectively.

3. A wireless corrosion sensor according to claim 2, characterized in that: The rectification and filtering unit comprises a rectifier bridge and a filter capacitor, wherein the rectifier bridge is used to rectify the induced current to obtain a direct current; the filter capacitor is electrically connected to the rectifier bridge, and the filter capacitor is used to filter the direct current.

4. A wireless corrosion sensor according to any one of claims 1 to 3, characterized in that: The corrosion detection unit is a high-purity zinc electrode.

5. A wireless corrosion sensor according to any one of claims 1 to 3, characterized in that: The wireless transmission unit includes one or more of a GSM module, a Bluetooth module, and a WIFI module.

6. A wireless corrosion sensor according to any one of claims 1 to 3, characterized in that: The wireless corrosion sensor also includes a battery, which is placed between the receiving coil and the corrosion detection unit. The battery is electrically connected to the corrosion detection unit, the wireless transmission unit and the receiving coil respectively, and the battery is used to provide a backup power supply for the wireless corrosion sensor.

7. A corrosion monitoring system including a wireless corrosion sensor, characterized in that: The wireless corrosion sensor as described in any one of claims 1 to 6 includes a wireless charging device, which is fixedly mounted on the marine platform conductor frame; the wireless corrosion sensor is detachably mounted on the marine platform conductor frame, and the wireless charging device supplies power to the wireless corrosion sensor to ensure that the wireless corrosion sensor monitors the corrosion condition of the underwater part of the marine platform conductor frame in real time.

8. A corrosion monitoring system comprising a wireless corrosion sensor according to claim 7, characterized in that: The wireless charging device also includes a power conversion module and a transmitting coil. The input end of the power conversion module is connected to a 220V AC power supply. The transmitting coil is connected to the output end of the power conversion module, and the transmitting coil generates an alternating magnetic field.

9. A corrosion monitoring system comprising a wireless corrosion sensor according to claim 8, characterized in that: The conduit frame includes a conduit and a flange, wherein the flange is welded to one end of the conduit, one end of the wireless charging device is connected to the flange by bolts, and the other end of the wireless charging device is connected to the wireless corrosion sensor by bolts.

Images