CN209992492U - An underwater sensor and an underwater environment monitoring platform - Google Patents

Abstract

The utility model discloses an underwater sensor and an underwater environment monitoring platform, comprising a first cylinder body and a second cylinder body. One end of the first cylinder body is an end cover, the other end is open, and a sealing chamber is arranged in the first cylinder body. The part of the sealed cabin protruding from the first cylinder is an integrally formed sensing probe. The sealed cabin is cylindrical. The sealed cabin encapsulates the control circuit board and the conversion circuit board with sealant. The inner wall of the first cylinder is provided with several seals on the radial direction. Ring, the first cylinder is connected and fixed with the sealing chamber by bolts, the second cylinder is provided with an annular boss, and the annular boss is provided with a gasket that is fixed with the first cylinder and the sealing chamber, and the gasket is just located in the first cylinder and the sealing chamber. A cylindrical body and the axial end face of the sealing chamber, the second cylindrical body is provided with a thread that is fixed with the outer wall of the first cylindrical body. Using the underwater sensor, the circuit board is sealed with sealant, and then welded into a sealed chamber integrally formed with the sensing probe; the cylindrical sealed chamber is then mechanically sealed in both radial and axial directions, so as to improve the performance of the sensor. Underwater pressure tightness.

Description

An underwater sensor and an underwater environment monitoring platform

technical field

The utility model relates to the field of water quality environment monitoring, in particular to an underwater sensor and an underwater environment monitoring platform.

Background technique

Underwater sensors are mainly used for detection and survey of underwater environment, specifically for online multi-parameter detection of offshore water quality, including pH, dissolved oxygen, ORP and conductivity. With the development of tropical ocean research, the demand of underwater sensors for practical application in scientific experiments is increasing. Due to the complex and changeable underwater environment, the underwater sensor needs to have good pressure sealing performance. At present, the most commonly used sealing method is direct filling and sealing. Due to long-term underwater immersion or foreign matter blocking during installation, the adhesive layer may be peeled off. As a result, the entire sensor is damaged, especially the sensor used for online monitoring of marine water quality, which requires higher waterproofness. In addition, the existing underwater sensors are mostly combined with buoys and cables to be placed in the water for fixed-point detection, and the monitoring water area is limited. Therefore, it is necessary to design a new type of underwater environmental monitoring platform, which improves the traditional low-efficiency working method of artificial fixed-point sampling and detection to obtain water quality, and breaks the limitations of fixed-point monitoring.

Utility model content

In view of this, the utility model provides an underwater sensor, which solves the problem of poor underwater pressure-bearing and sealing performance of the existing sensor.

One aspect of the present utility model provides an underwater sensor, comprising a first cylinder body and a second cylinder body, one end of the first cylinder body is an end cover, the other end is open, a sealing chamber is arranged in the first cylinder body, and the sealing chamber is The part protruding from the first cylinder is an integrally formed sensing probe, the sealing chamber is cylindrical, the sealing chamber encapsulates the control circuit board and the conversion circuit board with sealant, and the inner wall of the first cylinder is radially provided with a number of sealing rings, The first cylinder is connected and fixed with the sealing chamber by bolts, and an annular boss is arranged in the second cylinder. The annular boss is provided with a gasket that is fixed with the first cylinder and the sealing chamber. On the axial end surfaces of the body and the sealing chamber, the second cylinder body is provided with a thread that is fixed to the outer wall of the first cylinder body.

Preferably, both the first cylinder body and the second cylinder body are cylindrical metal shells.

Preferably, the end cover is provided with a snap ring and a cable connector, and the cable connector includes a tail end connector, an outer casing, a hexagon socket head screw, a flat sealing pad, a first waterproof rubber pad, a first terminal, a mounting seat, a second waterproof pad Rubber pad and second terminal, wherein the tail end connector is provided with a through hole passing through the cable, a sealing flat gasket is arranged between the tail end connector and the outer shell, the tail end connector and the outer shell are fixed by hexagon socket screws, and one side of the outer shell is A first terminal for a plug is fixed, a first waterproof rubber pad is laid between the outer casing and the first terminal, one end of the mounting seat is fixed on the end cover, and the other end is fixed with a second terminal for the socket, the mounting seat and the first terminal are fixed. A second waterproof rubber pad is arranged between the two terminals, and the mounting seat is linearly connected with the sealing chamber.

Preferably, the side of the second cylinder body is provided with a water channel, and the bottom is a mesh structure.

On the other hand, an underwater environment monitoring platform is provided, including a cable, a floating ball, an underwater robot and an underwater sensor, the underwater robot and the underwater sensor are connected and fixed by a cable, and the underwater sensor is connected with the floating ball.

Preferably, the underwater robot is a general-purpose open-frame underwater robot of ROVMAKER brand.

Using the underwater sensor provided by the utility model, on the one hand, the circuit board is potted with sealant, and then welded into an integrally formed sealed cabin; on the other hand, the cylindrical sealed cabin is radially and axially sealed. The mechanical two-way seal achieves good sealing and facilitates the disassembly of the sealed cabin for maintenance. The end face of the sealed cabin cooperates with the annular boss, the outer wall of the sealed cabin cooperates with the inner wall of the first cylinder, and the first cylinder and the second cylinder are threadedly fixed. The pressure-bearing sealing performance of the sensor in the horizontal and vertical directions is improved under the action of the pressure sensor, and the first cylinder body and the second cylinder body are both made of cylindrical metal shells, which further enhances the underwater pressure-bearing capacity. Further, the cable connector adopts a watertight plug-in method, which is convenient for plugging and unplugging, and can withstand a certain tensile force while being waterproof, which is convenient for transferring in water.

In addition, the underwater sensor is used in combination with the underwater robot, the floating ball and the cable to build an underwater environment monitoring platform. Using the flexibility of the underwater robot, it can monitor the water quality anywhere underwater and improve the detection efficiency.

Description of drawings

1 is a schematic structural diagram of an underwater sensor;

2 is a schematic cross-sectional view of an underwater sensor;

Fig. 3 is the structural representation of the cable connector;

FIG. 4 is a schematic diagram of connection of an underwater environment monitoring platform.

Detailed ways

The principles and features of the present invention will be described below with reference to the accompanying drawings, and the examples are only used to explain the present invention, and are not intended to limit the scope of the present invention.

Embodiment 1: With reference to Figures 1 to 3, an underwater sensor includes a first cylinder 1 and a second cylinder 2. One end of the first cylinder 1 is an end cover 4, the other end is open, and the end cover 4 is fixed on top. A snap ring 3 for fixing the floating ball and a cable connector 5 are provided. The first cylinder body 1 is provided with a sealing chamber 11. The part of the sealing chamber 11 extending out of the first cylinder body 1 is a sensing probe. The sensing probe includes a first cylinder. The probe 6 and the second probe 7, the first probe 6 is a temperature probe, and the second probe 7 is a pH probe. In another embodiment, the sensing probes also include dissolved oxygen and conductivity probes. The sealing chamber 11 is cylindrical and encapsulates the control circuit board and the conversion circuit board of the existing sensor. First, the circuit board is encapsulated with sealant to complete the first re-sealing. Secondly, the sealing chamber 11 and the probe are integrally formed to complete the second re-sealing. Finally, three sealing rings 12 are arranged radially inside the first cylinder body 1, and are connected and fixed with the sealing chamber 11 by bolts 13, while the second cylinder body 2 is provided with an annular boss 21, and the annular boss 21 is provided with an annular boss 21. The gasket 22 is fixed with the first cylinder body 1 and the sealing chamber 11. The rubber gasket 22 is just located on the axial end surfaces of the first cylinder body 1 and the sealing chamber 11, while the second cylinder body 2 is provided with the first cylinder body 1 and the sealing chamber 11. The outer wall of the cylinder body 1 is matched with a fixed thread to complete the third seal through radial and axial mechanical two-way sealing. The first cylinder 1 and the second cylinder 2 are both cylindrical metal shells with strong pressure bearing capacity. The first cylinder 1 is mainly used to protect the sealed cabin 11 and withstand underwater pressure. The side of the second cylinder 2 is provided with The bottom of the water channel 23 is a mesh structure, which can prevent the sensor probe from being damaged by large suspended particles and organisms while entering and leaving the water. In addition, the signal detected by the underwater sensor of this embodiment is sent out through the RS485 cable, and the power is also supplied through the RS485 cable.

The cable connector 5 includes a tail end connector 51, an outer casing 52, a socket head cap screw 53, a flat sealing pad 54, a first waterproof rubber pad 55, a first terminal 56, a mounting seat 57, a second waterproof rubber pad 58, a second waterproof rubber pad 58, and a second waterproof rubber pad 58. The terminal 59, wherein the end connector 51 is provided with a through hole (not shown) passing through the cable 8, and a sealing flat gasket 54 is provided between the end connector 51 and the outer casing 52, which is fixed by the socket head cap screw 53, and the outer casing 52 A first terminal 56 for a plug is fixed on one side, a first waterproof rubber pad 55 is laid between the outer casing 52 and the first terminal 56, one end of the mounting seat 57 is fixed on the end cover 4, and the other end is fixed with a socket for the socket. For the second terminal 59, a second waterproof rubber pad 58 is provided between the mounting seat 57 and the second terminal 59. The mounting seat 57 is connected to the sealing chamber 11 through the wire 9. After the first terminal 56 and the second terminal 59 are connected by plugging , the first waterproof rubber pad 55 and the second waterproof rubber pad 58 are closely attached due to the soft material, and the outer shell 52 and the mounting seat 57 are further screwed together, so as to realize the water sealing of the cable, on the one hand, prevent the cable from being connected under the action of water pressure. Water seepage; on the other hand, the detachable cable is convenient for assembly.

Embodiment 2: An underwater environment monitoring platform, including the underwater sensor 101, the cable 102, the underwater robot 103 and the floating ball 104 of the first embodiment, the underwater sensor 101 fixes the floating ball 104 through a snap ring, and supplies the underwater sensor 101. Provide buoyancy, the underwater sensor 101 is electrically connected with the underwater robot 103 through the cable 102, wherein the underwater robot 103 is a general-purpose open-frame underwater robot of the existing ROVMAKER brand, and the underwater robot 103 includes a frame, a cabin fixing ring, Hatch cover, dome cover, buoyancy material and control cabin, etc. Its hardware circuit includes Pixhawk, Raspberry Pi, power carrier communication module, power management module and sensor subsystem module, etc. When the underwater sensor 101 detects the water quality, it is wirelessly sent to the client using the Modbus communication protocol, or output to the underwater robot 103 through the RS-485 bus, and the underwater robot 103 communicates with the host through the local area network. The underwater robot can carry underwater sensors for data collection according to actual needs, so as to realize the monitoring of underwater water quality.

To sum up, using the underwater sensor provided by the present utility model, on the one hand, the circuit board is potted with sealant, and then welded into an integrally formed sealed cabin; The mechanical two-way seal in the axial direction and the axial direction can achieve good sealing and facilitate the disassembly of the sealed cabin for maintenance. The first cylinder body and the second cylinder body are both cylindrical metal shells, which have strong underwater pressure bearing capacity. Further, the cable connector adopts a terminal plug connection method, which is convenient for plugging and unplugging, and can withstand a certain tensile force while being waterproof, which is convenient for transferring in water. In addition, the underwater sensor is used in combination with the underwater robot, the floating ball and the cable to build an underwater environment monitoring platform. Using the flexibility of the underwater robot, it can monitor the water quality anywhere underwater and improve the detection efficiency.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall include within the scope of protection of the present invention.

Claims (6)

1. An underwater sensor, characterized in that it comprises a first cylinder and a second cylinder, one end of the first cylinder is an end cover, the other end is open, and a sealed cabin is provided in the first cylinder, and the sealed cabin extends The part that exits the opening of the first cylinder is an integrally formed sensing probe, the sealing chamber is cylindrical, the sealing chamber encapsulates the control circuit board and the conversion circuit board with sealant, and the inner wall of the first cylinder is radially provided with a number of sealing rings, The first cylinder is connected and fixed with the sealing chamber by bolts, and an annular boss is arranged in the second cylinder. The annular boss is provided with a gasket that is fixed with the first cylinder and the sealing chamber. On the axial end surfaces of the body and the sealing chamber, the second cylinder body is provided with a thread that is fixed to the outer wall of the first cylinder body. 2 . The underwater sensor according to claim 1 , wherein the first cylinder body and the second cylinder body are both cylindrical metal shells. 3 . 3. The underwater sensor according to claim 1, wherein the end cover is provided with a snap ring and a cable connector, and the cable connector includes a tail connector, an outer shell, a hexagon socket head screw, a sealing flat The pad, the first waterproof rubber pad, the first terminal, the mounting seat, the second waterproof rubber pad, and the second terminal. The pad, the tail end connector and the outer casing are fixed by hexagon socket head screws, the first terminal for the plug is fixed on one side of the outer casing, a first waterproof rubber pad is laid between the outer casing and the first terminal, and one end of the mounting seat is fixed on the end cover The other end is fixed with a second terminal for the socket, a second waterproof rubber pad is arranged between the mounting seat and the second terminal, and the mounting seat is linearly connected with the sealing chamber. 4 . The underwater sensor according to claim 1 , wherein the side of the second cylinder is provided with a water channel, and the bottom is a mesh structure. 5 . 5. an underwater environment monitoring platform, is characterized in that, comprises cable, float, underwater robot and the underwater sensor described in any one of claim 1-4, described underwater robot and claim 1-4 The underwater sensor described in any one is connected and fixed by a cable, and the underwater sensor is connected with the floating ball. 6. a kind of underwater environment monitoring platform according to claim 5 is characterized in that, described underwater robot is the general type open-frame underwater robot of ROVMAKER brand.

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