A device for measuring seabed sediment temperature on an unmanned platform

Abstract

The invention discloses a seabed sediment temperature measuring device for an unmanned platform, comprising a float unit, an iridium module, a wireless data receiving module, a weight, a data processing chamber, a timer releaser, and a temperature probe, wherein the temperature probe comprises an upper end shaft, an intermediate shaft, and a probe tip, wherein the upper end shaft and the intermediate shaft are detachably connected, and the intermediate shaft and the probe tip are detachably connected; the seabed sediment temperature measuring device for an unmanned platform of the present invention can be automatically separated and the detected seabed sediment data can be sent to an email server, and the seabed sediment temperature value and the change trend detected by the seabed sediment temperature measuring device of the unmanned platform can be viewed in real time by logging into the email, and the operation is novel and the setting is simple.

Description

[Technical field]

[0001] The invention relates to the technical field of ocean temperature measurement, and in particular to a seabed sediment temperature measuring device of an unmanned platform. [Background technology]

[0002] The seabed sediment temperature detection device is an essential tool for underwater construction such as seabed scientific investigation and engineering operations. The detection of seabed sediment temperature is mainly achieved through a thermometer. A method of placing a seabed thermometer into the sea, sinking under the action of gravity and inserting it into the seabed sediment to obtain the temperature of the seabed sediment in the area is a commonly used method. At present, seabed thermometers are released and recovered by steel cables. During the temperature measurement process of the thermometer, the hull connected to the thermometer will change its relative position relative to the thermometer with the ocean current. It is difficult for the thermometer and the hull to maintain a static state, which reduces the accuracy and safety of the measurement during the measurement of seabed sediments. It is difficult to measure the temperature of the seabed in the deep sea with a water depth of more than 1,000 meters. It is often encountered that the thermometer takes a lot of time when it is put and recovered, it is difficult to obtain the temperature of the detected seabed sediment in real time, and it is difficult to ensure that the seabed thermometer operating underwater returns to the shore quickly and accurately. At the same time, a temperature measuring device with less environmental interference such as seawater temperature, salinity, and pressure is needed. [Summary of the invention]

[0003] The present invention discloses a seabed sediment temperature measuring device for an unmanned platform, which solves the problems in the prior art that it is difficult to measure the temperature of the seabed in the deep sea with a water depth greater than 1000 meters, the thermometer takes a lot of time to be deployed and recovered, it is difficult to obtain the detected temperature of the seabed sediment in real time, and it is difficult to ensure that the seabed thermometer operating underwater returns to the shore quickly and accurately.

[0004] To achieve the above object, the present invention proposes a device for measuring seabed sediment temperature on an unmanned platform, comprising:

[0005] A float unit, the float unit is arranged at the uppermost part of the device, the interior of the float unit is hollow, a through hole is arranged at the bottom of the float unit, the top of the temperature probe passes through the through hole at the bottom of the float unit and is fixedly connected to the float unit, the top of the temperature probe completely blocks the through hole at the bottom of the float unit and forms a sealed cavity with the inner wall of the float unit;

[0006] An Iridium module, which is disposed in a sealed cavity in the float unit and transmits seabed sediment temperature data to a designated mailbox via a transmitting antenna;

[0007] A wireless data receiving module, the wireless data receiving module is arranged in a sealed cavity in the float unit, the wireless data receiving module comprises a first battery, the first battery is used to power the Iridium module and the wireless data receiving module, the wireless data receiving module is electrically connected to the Iridium module, and the wireless data receiving module transmits data to the Iridium module;

[0008] A weight block, wherein the upper and lower ends of the weight block are provided with holes that allow the temperature probe to pass through, and the weight block is provided with a cavity that can accommodate an object;

[0009] A data processing chamber, the data processing chamber is arranged on the weight block, a second battery and a wireless data transmission module are arranged in the data processing chamber, the second battery has a voltage of 24V and a capacity of 40Ah, and can work at sea depth, the wireless data transmission module is connected to the second battery, and the wireless data transmission module is used to send seabed sediment temperature data to the wireless data receiving module;

[0010] A timer releaser, the timer releaser is arranged in the cavity of the weight block, the timer releaser is connected to the second battery, the timer releaser comprises a relay switch and an electromagnet, the electromagnet is fixedly connected to the cavity in the weight block, the electromagnet is electrically connected to the relay switch, the electromagnet is magnetic when not powered, and the electromagnet disappears when powered, and the timer releaser can connect or disconnect the circuit according to a preset time interval;

[0011] A temperature probe, wherein the temperature probe comprises an upper end shaft, a middle shaft, and a probe tip, wherein the upper end shaft and the middle shaft are detachably connected, and the middle shaft and the probe tip are detachably connected; the middle shaft passes through through holes provided at both ends of the weight block, the middle shaft is a metal that is easily magnetized, and the probe tip is provided with 5 temperature sensors, which are evenly distributed, and the temperature sensors are electrically connected to the second battery and the wireless data transmission module, and the temperature sensor sends the measured seabed sediment temperature data to the wireless data transmission module.

[0012] Furthermore, the electromagnet is arranged on any side inner wall in the weight block cavity, and the electromagnet is fixedly connected to the side inner wall.

[0013] Furthermore, the electromagnet is arranged on the lower bottom surface of the weight block cavity, and the electromagnet is fixedly connected to the lower bottom surface.

[0014] Furthermore, the electromagnet is a permanent magnet with high coercivity with an externally wound coil, and the axis of the magnetic field generated by the permanent magnet coincides with the axis of the magnetic field generated by the coil, but in opposite directions.

[0015] Furthermore, the height of the probe tip is 1 m, the accuracy of the temperature probe is less than 0.05°C, and the resolution is not less than 0.001°C.

[0016] Furthermore, the upper end rod shaft is sleeved on the upper end of the middle rod shaft, and the upper end rod shaft is a metal that is easily magnetized.

[0017] The present invention has the following beneficial effects:

[0018] A seabed sediment temperature measuring device for an unmanned platform is provided. A wireless data transmission module reads the temperature detected by the temperature sensors evenly distributed in the temperature probe every one minute (the temperature data accuracy is not less than 0.05°C, and the resolution is not less than 0.001°C). At the same time, the wireless data transmission module sends the seabed sediment temperature data to the wireless data receiving module in the float unit every 10 to 120 minutes, and then the wireless data receiving module stores the received seabed sediment temperature data in a storage unit represented by an SD card. When it is determined that the temperature measurement process is over and the seabed sediment temperature measuring device for an unmanned platform needs to be recovered, the relay switch in the timer releaser can be turned on at a preset time to energize the electromagnet. After being energized, the electromagnet loses its magnetism, and the temperature probe loses the attraction of the electromagnet set in the weight block and detaches from the weight block. The operation is convenient and simple. At the same time, it has the characteristics of being less affected by environmental interference such as seawater temperature, salinity, and pressure.

Brief Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0020] In the figure: 1-float unit, 110-iridium module, 120-wireless data receiving module, 2-weight block, 210-data processing chamber, 220-timer releaser, 3-temperature probe, 310-upper end rod, 320-middle rod, 330-probe tip. [Specific implementation method]

[0021] It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In order to enable those skilled in the art to better understand the present solution, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments in the present invention, other embodiments obtained by ordinary technicians in the field without creative work should all fall within the scope of protection of the present invention.

[0022] Depend on Figure 1As shown, the float unit 1 is arranged at the top of the device, the interior of the float unit 1 is hollow, and a through hole is provided at the bottom of the float unit 1. The top of the temperature probe 3 passes through the through hole at the bottom of the float unit 1 and is fixedly connected to the float unit 1. The top of the temperature probe 3 completely blocks the through hole at the top of the float unit 1 and the four walls of the float unit 1 form a sealed cavity.

[0023] The Iridium module 110 is disposed in a sealed cavity in the float unit 1. The Iridium module 110 includes a data receiving device and a transmitting antenna. The transmitting antenna is used to transmit the seabed sediment temperature data to a designated mailbox.

[0024] The Iridium module 110 in the float unit 1 establishes a communication link with the remote mailbox server by sending status information and control commands to the remote mailbox server. The communication parameters of the Iridium module 110 can be set as follows: baud rate 2500bps, the Iridium module 110 in the float unit 1 is set to the sending mode, and the mailbox server is set to the receiving mode. In the case where the mailbox server sends an instruction to the Iridium module 110 in the float unit 1, the Iridium module 110 in the float unit 1 can be automatically set to the receiving mode. After the communication link is successfully established, two-way temperature data transmission of seabed sediments can be performed. The Iridium module 110 can send a data sending instruction to prepare the data receiving buffer of the mailbox server for receiving. The data sending instruction can be pre-set in the Iridium module 110 end and the mailbox server.

[0025] In other embodiments, before the unmanned platform's seabed sediment temperature measuring device is deployed to the seabed, the power is turned on by pressing the switch, and after the Iridium module 110 in the float unit 1 is powered on and awakened, the Iridium module 110 initializes the serial port; and reads the corresponding communication parameters: the serial port baud rate is 2500bps, without parity check. The Iridium module 110 in the float unit 1 is set to a sending state, sending the GPS geographic location data and deployment time data of the unmanned platform's seabed sediment temperature measuring device, and waiting to send the seabed sediment temperature data. When the Iridium module 110 receives a data transmission request, the Iridium module 110 transmits the data to the Iridium gateway through the transmitting antenna, and then sends it to a remote mail server through the Iridium communication system.

[0026] The mail server initializes the serial port and sets the baud rate to 2500bps without parity check. It automatically sets the receiving mode and reads the data sent from the Iridium module 110 to the mail server in the data buffer in real time.

[0027] The wireless data receiving module 120 is disposed in a sealed cavity in the float unit 1. The wireless data receiving module 120 includes a first battery, which is used to power the Iridium module 110 and the wireless data receiving module 120. The wireless data receiving module 120 is electrically connected to the Iridium module 110. For example, the wireless data receiving module 120 and the Iridium module can be connected using an RS232 bus. The wireless data receiving module 120 transmits data to the Iridium module 110.

[0028] In other embodiments, the Iridium module 110 is connected to the wireless data receiving module 120 via an RS232 bus.

[0029] The weight block 2 has holes at the upper and lower ends thereof for allowing the temperature probe 3 to pass through, and a cavity for accommodating an object is provided inside the weight block 2.

[0030] The data processing chamber 210 is arranged on the weight block 2. A second battery and a wireless data sending module are provided in the data processing chamber 210. The second battery has a voltage of 24V and a capacity of 40Ah and can withstand the pressure in the deep sea. The wireless data sending module is connected to the second battery and is used to send the seabed sediment temperature data to the wireless data receiving module 120.

[0031] A timer release 220 is provided in the cavity of the weight block, and the timer release 220 is connected to the second battery. In other embodiments, the timer release 220 is provided with an independent battery for powering it. The timer release 220 includes a relay switch and an electromagnet, and the electromagnet is electrically connected to the relay switch. The electromagnet is magnetic when not powered, and the magnetism disappears when the electromagnet is powered. The timer release 220 can connect or disconnect the circuit according to a preset time interval.

[0032] In other embodiments, a coil is wound outside the electromagnet in the cavity of the weight block 2, and the magnetic field generated by the electromagnet fixed in the cavity generates a magnetic force on the temperature probe 3 passing through the through hole of the weight block.

[0033] The temperature probe 3 includes an upper shaft 310, an intermediate shaft 320, and a probe tip 330. The upper shaft 310 and the intermediate shaft 320 are detachably connected, and the intermediate shaft 320 and the probe tip 330 are detachably connected. The intermediate shaft 320 passes through through holes provided at both ends of the weight block. The intermediate shaft is a metal that is easily magnetized. The probe tip 330 is provided with 5 temperature sensors, which are evenly distributed. The temperature sensors are electrically connected to the second battery and the wireless data sending module. The temperature sensors send the measured seabed sediment temperature data to the wireless data sending module.

[0034] In other embodiments, the upper end shaft 310 is sleeved on the upper end of the middle shaft 320, and the upper end shaft 310 is a metal that is easily magnetized.

[0035] In other embodiments, the probe tip 330 is 1 meter high, and the probe tip 330 can be fully or partially inserted into the seabed sediment, and the temperature sensor has an accuracy of less than 0.05° C. and a resolution of not less than 0.001° C. Because the probe tip 330 is fully inserted into the seabed sediment, the temperature measurement environment is more stable and better measurement results can be obtained.

[0036] In the embodiment of the present invention, after an unmanned platform temperature measurement device for seabed sediments is placed in water, because the density of the whole composed of the temperature probe 3 and the float unit 1 is different from that of the weight 2, the buoyancy of the whole composed of the temperature probe 3 and the float unit 1 is greater than its own gravity, and the whole composed of the temperature probe 3 and the float unit 1 will float upward in the water. The buoyancy of the weight 2 is less than the gravity of the weight 2, and the weight 2 will sink after being placed in the water. Because there is friction between the weight 2 and the temperature probe 3, after the seabed sediment temperature measurement device in the embodiment of the present application is placed in water, the whole composed of the weight 5, the temperature probe 3, and the float unit 1 moves downward at different accelerations, and the acceleration of the downward movement of the weight 5 is greater than the acceleration of the downward movement of the float unit, resulting in relative displacement between the float unit 1 and the weight 2. When the temperature probe 3 is not attracted by the electromagnet, the float unit 1 will separate from the weight 2 and float up. Since an electromagnet is fixedly connected in the inner cavity of the weight block 2, the electromagnet is magnetic when not energized. The magnetic field generated by the electromagnet generates an attractive force on the middle rod 320 of the temperature probe 3 passing through the two ends of the weight block 2, thereby sucking the temperature probe 3 so that the temperature probe 3 and the float unit 1 do not produce relative displacement.

[0037] In other embodiments, the electromagnet is magnetic when not powered, and the magnetic field generated by the electromagnet generates an attractive force on the upper rod body 310 made of easily magnetized metal, thereby sucking the temperature probe 3 so that the temperature probe 3 and the float unit 1 do not produce relative displacement.

[0038] In this embodiment, the electromagnet is fixedly arranged on the inner wall of any side surface in the cavity of the weight block 2, and the middle rod 320 is subjected to an attraction in the direction of the line connecting the electromagnet and toward the electromagnet, and the attraction presses the middle rod 320 toward the end where the electromagnet is provided. By increasing the pressure between the middle rod 320 and one end of the cavity of the weight block 2, the friction between the middle rod 320 and the weight block 2 is increased, thereby keeping the weight block 2 and the temperature probe 3 relatively still.

[0039] In other embodiments, the electromagnet is fixedly arranged on the lower bottom surface of the cavity of the weight block 2, and the middle rod body 320 is subjected to an attraction in the direction of the line connecting the electromagnet and toward the electromagnet, and the attraction causes the temperature probe 3 to be subjected to an attraction in an oblique downward direction, which offsets the buoyancy of the temperature probe 3 in the vertical direction, thereby keeping the weight block 2 and the temperature probe 3 relatively still.

[0040] In other embodiments, the upper end shaft 310 made of easily magnetized metal is attracted in the direction of the line connecting the electromagnet and toward the electromagnet, so that the weight 2 and the temperature probe 3 remain relatively still.

[0041] In other embodiments, the coil wound outside the electromagnet in the cavity of the weight block 2 is in a non-energized state at this time. The magnetic field generated by the magnet fixed in the cavity generates a magnetic force on the middle end of the temperature probe 3 passing through the through hole of the weight block 2.

[0042] When the electromagnet is not energized, the temperature probe 3 is attracted by the electromagnet, the float unit 1 is above, and the weight 2 is below. The present application discloses a seabed sediment temperature measuring device for an unmanned platform that slowly falls in the water. After falling to the seabed, the seabed sediment temperature measuring device for an unmanned platform is inserted into the seabed sediment at a certain depth. The seabed sediment temperature measuring device for the unmanned platform is constructed to maintain a stable state at the bottom of the water. The probe tip 330 is inserted into the seabed sediment without water flow drift, thereby ensuring the stability of the seabed sediment temperature measuring device at the bottom of the water. The data sending module in the data processing warehouse 210 reads the temperature value detected by the temperature sensor in the probe tip 330 every 1 minute (the temperature data accuracy is not less than 0.05°C, and the resolution is not less than 0.001°C). At the same time, the data sending module in the data processing warehouse 210 sends temperature data to the wireless data receiving module 120 in the float unit every 10 to 120 minutes.

[0043] After the temperature measurement device for the seabed sediment measures the temperature of the seabed sediment for a period of time, the timer releaser 220 in the sediment temperature measurement device automatically turns on the relay switch within the set time, and the magnetism of the electromagnet disappears when it is powered on, and the attraction force of the temperature probe 3 in the power-on state disappears. The buoyancy of the weight 2 in the water is less than the gravity, and the buoyancy of the whole composed of the temperature probe 3 and the floating unit 1 in the water is greater than the gravity it is subjected to. Since the intermediate shaft 320 and the probe tip 330 are detachably connected, the probe tip 330 is still inserted into the seabed sediment layer because it is still subjected to the friction of the seabed sediment. The intermediate shaft 320 is no longer attracted by the electromagnet and thus separated from the probe tip 330. The whole composed of the float unit 1, the upper shaft 310, and the intermediate shaft 330 will float up after being separated from the weight 2 and the probe tip 330. In this embodiment, the intermediate shaft 320 is made of iron or stainless steel.

[0044] In other embodiments, after the seabed sediment temperature measuring device measures the temperature of the seabed sediment for a period of time, the timer releaser 220 in the sediment temperature measuring device automatically turns on the relay switch within the set time, and the electromagnet is powered on, and the magnetism of the electromagnet as a whole disappears. Since the middle shaft 320 and the upper shaft 310 are detachably connected, and the upper shaft 310 is no longer attracted by the electromagnet and thus separated from the middle shaft 320, the whole composed of the float unit 1 and the upper shaft 310 will float up after being separated from the weight 2 and the probe tip 330 and the middle shaft 320, and the probe tip 330 and the middle shaft 320 are inserted into the seabed sediment layer.

[0045] In other embodiments, the electromagnet is a permanent magnet with high coercive force and an externally wound coil, and the axis of the magnetic field generated by the electromagnet coincides with the axis of the magnetic field generated by the coil and is in opposite directions. The coil wound outside the electromagnet in the cavity of the weight 2 is now in a powered state. The magnetic field generated by the magnet fixed in the cavity and the magnetic field generated by the coil cancel each other out, causing the magnetic force on the upper end shaft 310 or the middle shaft 320 of the temperature probe 3 passing through the through hole of the weight 2 to disappear. The float unit 1 and the upper end shaft 310 or the upper end shaft 310 and the middle shaft 320 as a whole will separate from the weight 2 and float up.

[0046] In this embodiment, when the float unit 1 and the temperature probe 3 float to the water surface and the float unit 1 is exposed outside the water surface, the Iridium module 110 in the float unit 1 is powered on and awakened, and the Iridium module 110 initializes the serial port and reads the corresponding communication parameters: the serial port baud rate is 2500bps, without parity check. The Iridium module 110 in the float unit 1 is set to the sending state, waiting to send the temperature data of the seabed sediment. When the Iridium module 110 receives the data sending request, the Iridium module 110 transmits the data to the Iridium gateway through the sending antenna, and then sends it to the remote mail server through the Iridium communication system. In order to realize that the seabed sediment temperature measuring device sends the real-time measured seabed sediment temperature data to the mailbox. When the Iridium module 110 in the float unit 1 is in the process of receiving data or instructions from the remote mailbox server, the Iridium module 110 in the float unit 1 is automatically set to the receiving mode and reads the seabed sediment temperature data in the data buffer.

[0047] The mail server initializes the serial port and sets the baud rate to 2500bps without parity check. It automatically sets the receiving mode and reads the data sent from the Iridium module 110 to the mail server in the data buffer in real time.

[0048] In the prior art, it is difficult to keep the temperature meter and the hull in a static state, and it is difficult to ensure the accuracy and safety of the measurement during the measurement of seabed sediments. The present application embodiment provides a seabed sediment temperature measurement device for an unmanned platform that can be pre-assembled on an ocean exploration platform, and can be deployed and recovered in a specified time period, thereby eliminating the interference caused by human operation during the seabed sediment temperature measurement process and increasing the accuracy and safety of the temperature measurement results.

[0049] In the prior art, it is difficult to measure the temperature of the seabed in the deep sea with a water depth greater than 1000 meters. It is often encountered that the thermometer takes a lot of time to be put and recovered, it is difficult to obtain the temperature of the detected seabed sediment in real time, and it is difficult to ensure that the seabed thermometer operating underwater returns to the shore quickly and accurately. The embodiment of the present application provides a method that can automatically separate and send the detected seabed sediment data to an email server. By logging into the email, the seabed sediment temperature value and change trend detected by the seabed sediment temperature measurement device of the unmanned platform can be viewed in real time. The operation is novel and the setting is simple. At the same time, a temperature measuring device is provided that is less affected by environmental interference such as seawater temperature, salinity, and pressure.

[0050] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A device for measuring seabed sediment temperature on an unmanned platform, characterized in that: include: A float unit, the float unit is arranged at the uppermost part of the device, the interior of the float unit is hollow, a through hole is arranged at the bottom of the float unit, the top of the temperature probe passes through the through hole at the bottom of the float unit and is fixedly connected to the float unit, the top of the temperature probe completely blocks the through hole at the bottom of the float unit and forms a sealed cavity with the inner wall of the float unit; An Iridium module, which is disposed in a sealed cavity in the float unit and transmits seabed sediment temperature data to a designated mailbox via a transmitting antenna; A wireless data receiving module, the wireless data receiving module is arranged in a sealed cavity in the float unit, the wireless data receiving module comprises a first battery, the first battery is used to power the Iridium module and the wireless data receiving module, the wireless data receiving module is electrically connected to the Iridium module, and the wireless data receiving module transmits data to the Iridium module; A weight block, wherein the upper and lower ends of the weight block are provided with holes that allow the temperature probe to pass through, and the weight block is provided with a cavity that can accommodate an object; A data processing chamber, the data processing chamber is arranged on the weight block, a second battery and a wireless data transmission module are arranged in the data processing chamber, the second battery has a voltage of 24V and a capacity of 40Ah, and can work at sea depth, the wireless data transmission module is connected to the second battery, and the wireless data transmission module is used to send seabed sediment temperature data to the wireless data receiving module; A timer releaser, the timer releaser is arranged in the cavity of the weight block, the timer releaser comprises a relay switch and an electromagnet, the electromagnet is fixedly connected to the cavity in the weight block, the electromagnet is electrically connected to the relay switch, the electromagnet is magnetic when not powered, and the electromagnet disappears when powered, and the timer releaser can connect or disconnect the circuit according to a preset time interval; A temperature probe, wherein the temperature probe comprises an upper end shaft, a middle shaft, and a probe tip, wherein the upper end shaft and the middle shaft are detachably connected, and the middle shaft and the probe tip are detachably connected; the middle shaft passes through through holes provided at both ends of the weight block, the middle shaft is a metal that is easily magnetized, and the probe tip is provided with 5 temperature sensors, which are evenly distributed, and the temperature sensors are electrically connected to the second battery and the wireless data transmission module, and the temperature sensor sends the measured seabed sediment temperature data to the wireless data transmission module.

2. The device for measuring seabed sediment temperature of an unmanned platform according to claim 1, characterized in that: The electromagnet is arranged on any side inner wall of the weight block cavity, and the electromagnet is fixedly connected to the side inner wall.

3. The device for measuring seabed sediment temperature of an unmanned platform according to claim 1, characterized in that: The electromagnet is arranged on the lower bottom surface of the weight block cavity, and the electromagnet is fixedly connected to the lower bottom surface.

4. The device for measuring seabed sediment temperature of an unmanned platform according to claim 1, characterized in that: The electromagnet is a permanent magnet with high coercive force with an externally wound coil. The axis of the magnetic field generated by the permanent magnet coincides with the axis of the magnetic field generated by the coil, but in opposite directions.

5. The device for measuring seabed sediment temperature of an unmanned platform according to claim 1, characterized in that: The probe tip height is 1m, the temperature sensor accuracy is less than 0.05°C, and the resolution is not less than 0.001°C.

6. The device for measuring seabed sediment temperature of an unmanned platform according to claim 1, characterized in that: The upper end rod shaft is sleeved on the upper end of the middle rod shaft, and the upper end rod shaft is a metal that is easily magnetized.

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