Two-wire system current loop communication device of underwater equipment

Abstract

The utility model discloses a two-wire system current loop communication device of underwater equipment, which relates to the technical field of underwater equipment communication, and comprises an equipment shell, an opening is arranged on the equipment shell, a mounting seat is arranged in the opening, a sealing ring is sleeved on the outer wall of the mounting seat, and the sealing ring is arranged on the outer wall of the mounting seat. The surface of the sealing ring covers the inner wall of the opening and is attached to the equipment shell, and a pressure probe is arranged in the mounting seat; a convex cavity with a narrow upper part and a wide lower part is formed in the mounting seat, an internal thread is arranged at the narrow upper part of the convex cavity, the pressure probe is in threaded connection with the mounting seat through the internal thread, a pressure probe shell is connected with the positive end of the current loop, and the equipment shell is connected with the negative end of the current loop. Two-wire system communication is realized by means of the shell of the pressure probe and the equipment shell. According to the utility model, the sealing effect is good, the communication line is simplified, and the number of holes is reduced, thereby reducing the difficulty and cost of waterproof design.

Description

TECHNICAL FIELD

[0001] The utility model relates to underwater equipment communication technical field especially relates to a two-wire system current loop communication device of underwater equipment. BACKGROUND

[0002] Underwater communication equipment (such as the net position instrument of the company design and development, Argo buoy and sound pass) need to have waterproof performance, and the sealing property and stability of communication equipment are required to be extremely high, usually, the equipment needs to have wired communication function outward, needs to leave the opening of communication, and for waterproof equipment, the fewer the opening is, the more beneficial to waterproof design, and the opening of equipment increases the sealing difficulty. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a two-wire system current loop communication device of underwater equipment, which solves the problems in the prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A two-wire system current loop communication device of underwater equipment, comprising a device shell, an opening is formed in the device shell, a mounting seat is arranged in the opening, a sealing ring is sleeved on the outer wall of the mounting seat, the surface of the sealing ring covers the inner wall of the opening and is attached to the device shell, and a pressure probe is arranged in the mounting seat.

[0006] The inside of the mounting seat is provided with a convex cavity with a narrow upper part and a wide lower part, the narrow upper part of the convex cavity is provided with an internal thread, and the pressure probe is threadedly connected with the mounting seat through the internal thread.

[0007] A two-wire system current loop circuit is arranged in the device shell.

[0008] The outer shell of the pressure probe is connected with the positive terminal of the two-wire system current loop, the device shell is connected with the negative terminal of the current loop, and the two-wire system communication is realized by means of the outer shell of the pressure probe and the device shell.

[0009] Preferably, a water stop ring is fixedly sleeved on the outer wall of the mounting seat, an annular groove is formed in the inner ring of the sealing ring, and the water stop ring is clamped in the annular groove.

[0010] Preferably, a sealing edge is integrally formed above and below the outer side of the sealing ring, the two sealing edges are respectively attached to the outer surface and the inner surface of the device shell, and the distance between the two sealing edges is less than the thickness of the device shell.

[0011] Preferably, an extrusion edge is fixedly sleeved on the outer wall of the mounting seat, and the extrusion edge contacts and extrudes the sealing edge below.

[0012] Preferably, the convex cavity is fixedly connected with a sealing ring and a contact ring at the lower wide part, the contact ring is below the sealing ring, and the inner diameter of the sealing ring is smaller than the diameter of the pressure probe mounting end.

[0013] Preferably, the contact ring is inclined and contacts the lower part of the sealing ring, and the distance between the contact ring and the pressure probe mounting end is smaller than the thickness of the sealing ring.

[0014] Preferably, the outer ring of the sealing ring is provided with a containing groove, and the containing groove is filled with sealing glue.

[0015] Preferably, the metal shell of the pressure probe and the equipment shell are insulated, and the metal shell of the pressure probe and the equipment shell are not conductive and can serve as two lines for communication.

[0016] Compared with the prior art, the utility model has the advantages and positive effects that:

[0017] 1. In the application, the multiple sealing structures of the mounting seat, the sealing ring, the water stop ring and the extrusion along the edge ensure the high sealing property of the underwater equipment. This design not only prevents water penetration, but also improves the stability and durability of the equipment in harsh underwater environments.

[0018] 2. In the application, the metal shell of the pressure probe and the equipment shell are used as two lines for communication to realize two-wire current loop communication. This design simplifies the communication line, reduces the number of openings, and thus reduces the difficulty and cost of waterproof design. At the same time, the two-wire communication mode also improves the stability and reliability of data transmission. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A three-dimensional structure schematic diagram of a two-wire current loop communication device for underwater equipment is provided for the utility model;

[0020] Figure 2a A partial cross-sectional schematic diagram of one embodiment of a two-wire current loop communication device for underwater equipment is provided for the utility model;

[0021] Fig. 2 is a cross-sectional structure schematic diagram of one embodiment of the two-wire current loop communication device of the utility model;

[0022] Figure 3 A cross-sectional structure schematic diagram of a mounting seat of a two-wire current loop communication device for underwater equipment is provided for the utility model;

[0023] Figure 4 A cross-sectional structure schematic diagram of a sealing ring of a two-wire current loop communication device for underwater equipment is provided for the utility model;

[0024] Figure 5The utility model provides a kind of circuit distribution and equipment connection mode schematic diagram of two-wire system current loop communication device of underwater equipment.

[0025] Figure 6 It is serial port to USB module circuit diagram;

[0026] Figure 7 It is underwater equipment module circuit diagram.

[0027] Legend: 100, equipment shell;200, mounting seat;201, convex cavity;202, water stop ring;203, extrusion along edge;204, sealing ring;205, abutment ring;300, sealing ring;301, annular groove;302, sealing along edge;303, containing groove;400, pressure probe, 500-two-wire system current loop communication circuit module. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the drawings and examples. It should be noted that the examples of the present application and the features in the examples can be combined with each other without conflict.

[0029] In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from the description herein, therefore, the utility model is not limited to the specific examples disclosed in the following specification.

[0030] As Figures 1-5 Indicated, the utility model provides a kind of two-wire system current loop communication device of underwater equipment, including equipment shell 100, equipment shell 100 is provided with aperture, aperture is provided with mounting seat 200, mounting seat 200 is provided with sealing ring 300 on the outer wall, the surface of sealing ring 300 covers the inner wall of aperture and is attached equipment shell 100, pressure probe 400 is provided in mounting seat 200;

[0031] Among them, mounting seat 200 is internally provided with the convex cavity 201 of upper narrow lower wide, and the narrow part of convex cavity 201 is provided with internal thread, and pressure probe 400 is connected with mounting seat 200 by internal thread and screw thread.

[0032] Equipment shell 100 is provided with two-wire system current loop circuit module 500 inside, and the structure of the two-wire system current loop circuit is referred to Figure 5 , including serial port to USB module and underwater equipment module.

[0033] Serial port to USB module circuit diagram is referred to Figure 6 , and the both ends of circuit module are connected with serial port to USB sending end and serial port to USB receiving end respectively. The circuit diagram of underwater equipment module is referred toFigure 7 The two ends of the circuit module are respectively connected with the sending end of the device MCU and the receiving end of the device MCU.

[0034] The positive end of the current loop is connected with the outer shell of the pressure probe 400, and the negative end of the current loop is connected with the device shell 100, so that two-wire communication is realized by means of the outer shell of the pressure probe 400 and the device shell 100.

[0035] In the embodiment, the outer wall of the mounting seat 200 is fixedly sleeved with a water stop ring 202, and the inner ring of the sealing ring 300 is provided with an annular groove 301, and the water stop ring 202 is clamped in the annular groove 301, and the sealing between the sealing ring 300 and the mounting seat 200 is realized by the cooperation of the water stop ring 202 and the buffer groove.

[0036] In the embodiment, the upper and lower sides of the outer side of the sealing ring 300 are integrally formed with sealing edges 302, the two sealing edges 302 are respectively attached to the outer surface and the inner surface of the device shell 100, the distance between the two sealing edges 302 is less than the thickness of the device shell 100, the sealing ring 300 and the device shell 100 are in interference fit, and the sealing property is improved.

[0037] In the embodiment, the outer wall of the mounting seat 200 is fixedly sleeved with an extrusion edge 203, and the extrusion edge 203 contacts and extrudes the lower sealing edge 302. The extrusion edge 203 extrudes the lower sealing edge 302, so that the upper and lower sealing edges 302 realize the sealing between the sealing ring 300 and the opening.

[0038] In the embodiment, the sealing ring 204 and the abutting ring 205 are fixedly connected at the lower wide part of the convex cavity 201, the abutting ring 205 is located below the sealing ring 204, and the inner diameter of the sealing ring 204 is less than the diameter of the mounting end of the pressure probe 400.

[0039] In the embodiment, the abutting ring 205 is inclinedly arranged and abuts against the lower side of the sealing ring 204, the distance between the abutting ring 205 and the mounting end of the pressure probe 400 is less than the thickness of the sealing ring 204, so that the sealing ring 204 is extruded and elastically deformed between the mounting end of the pressure probe 400 and the abutting ring 205 after being bent, and then the sealing ring 204 surrounds the mounting end of the pressure probe 400 to realize sealing.

[0040] In the embodiment, the outer ring of the sealing ring 204 is provided with a containing groove 303, and sealing glue is injected into the containing groove 303, so as to realize the connection and sealing between the sealing ring 300 and the opening.

[0041] In this embodiment, the metal shell of the pressure probe 400 and the device shell are insulated and do not conduct electricity, which can be used as two lines for communication. The positive end of the current loop of the pressure probe 400 shell is connected to the positive end of the current loop of the product, and the negative end of the current loop of the device shell is connected to the negative end of the current loop of the product. In this way, two-wire communication is realized only by the shell of the pressure sensor and the product shell.

[0042] Method for using the device and working principle:

[0043] The serial port to USB module and the product are connected by two lines, that is, the positive end of the current loop of the serial port to USB module is connected to the positive end of the current loop of the product (i.e. the metal shell of the pressure probe 400), and the negative end of the current loop of the serial port to USB module is connected to the negative end of the current loop of the product, that is, the metal shell of the product device shell 100. The external 12V supplies power to the serial port to USB module.

[0044] The computer sends binary 1 to the device end: that is, the serial port to USB end sends 1, the triode U4 is turned on, the optocoupler U3 is turned on, the 12V voltage can pass through U3, pass through U1, D4, R12, R13 and D8, the underwater device default device end MCU keeps high level, the triode U5 is in the on state, the optocoupler U6 is turned on, and the current generated by the 12V voltage can pass through U6. The current generated by the 12V voltage continues to flow through the optocoupler U8, U8 is turned on, the triode U7 is turned off, and the device end MCU receives 1.

[0045] The computer sends binary 0 to the device end: that is, the serial port to USB end sends 0, the triode U4 is turned off, the optocoupler U3 does not emit light, the 12V voltage cannot pass through U3, the current generated by the 12V voltage cannot continue to flow, and the current loop cannot be formed. Finally, U8 cannot be turned on, the triode U7 is turned on, and the device end MCU receives 0.

[0046] The device end sends binary 1 to the computer end: that is, the device end MCU sends 1, the triode U5 is turned on, the optocoupler U6 is turned on, and the 12V current can pass through U6 to form a current loop. The serial port to USB end defaults to high level. The 12V voltage can pass through U3, pass through U1, and the triode U2 is not turned on, and the serial port to USB end receives 1.

[0047] The device end sends binary 0 to the computer end: that is, the device end MCU sends 0, the triode U5 is not turned on, the optocoupler U6 is not turned on, and the current loop cannot be formed. U1 is not turned on, the triode U2 is turned on, and the serial port to USB end receives 0.

[0048] In use, first, the outer wall of the mounting seat 200 is smeared with waterproof glue, the sealing ring 300 is sleeved on the mounting seat 200, the water stop ring 202 is clamped in the annular groove 301, the sealing ring 300 is passed through the opening, the upper and lower sealing edges 302 are respectively attached to the outer surface and the inner surface of the equipment shell 100, the sealing glue is injected into the accommodating groove 303 formed in the sealing ring 300, the sealing ring 300 is bonded in the opening, after the glue is dry, the mounting end of the pressure probe 400 is passed through the mounting seat 200 and is screwed through the internal thread, with the screwing of the pressure probe 400, the pressure probe 400 can extrude the upper sealing edge 302, and the extrusion edge 203 extrudes the lower sealing edge 302, so that the upper and lower sealing edges 302 realize the sealing between the sealing ring 300 and the opening, in the mounting process of the mounting end of the pressure probe 400, the sealing ring 204 is first passed through, then the sealing ring 204 is extruded, under the action of the abutting ring 205, the sealing ring 204 is bent and attached to the mounting end of the pressure probe 400, in summary, through multiple sealing, the pressure probe 400 is installed only by means of an opening, by using a two-wire current ring, underwater equipment and external computer communication can be realized, and multiple openings are not needed, and the fewer openings are, the more conducive to waterproof design.

[0049] The above is only a preferred embodiment of the present application, and does not limit the present application in other forms, and any skilled person in the art can change or modify the above disclosed technical content into equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments still belong to the protection scope of the present application technical scheme.

Claims

1. A two-wire current loop communication device for an underwater device, characterized by: The application relates to a device shell (100) provided with an opening, a mounting seat (200) arranged in the opening, a sealing ring (300) sleeved on the outer wall of the mounting seat (200), and a pressure probe (400) arranged in the mounting seat (200). The inside of the mounting seat (200) is provided with a convex cavity (201) which is narrow at the top and wide at the bottom, the narrow part of the convex cavity (201) is provided with internal threads, and the pressure probe (400) is threadedly connected with the mounting seat (200) through the internal threads. The device shell (100) is internally provided with a two-wire current loop circuit. The shell of the pressure probe (400) is connected with the positive end of the two-wire current loop, the device shell (100) is connected with the negative end of the current loop, and two-wire communication is realized by the shell of the pressure probe (400) and the device shell (100).

2. The two-wire current loop communication device for underwater equipment according to claim 1, characterized in that: The outer wall of the mounting seat (200) is fixedly sleeved with a water stop ring (202), the inner ring of the sealing ring (300) is provided with an annular groove (301), and the water stop ring (202) is clamped in the annular groove (301).

3. The two-wire current loop communication device for underwater equipment according to claim 1, characterized in that: The upper side and the lower side of the outer side of the sealing ring (300) are integrally formed with sealing edges (302), the two sealing edges (302) respectively abut against the outer surface and the inner surface of the device shell (100), and the distance between the two sealing edges (302) is smaller than the thickness of the device shell (100).

4. The two-wire current loop communication device for underwater equipment according to claim 3, characterized in that: The outer wall of the mounting seat (200) is fixedly sleeved with an extrusion edge (203), and the extrusion edge (203) contacts and extrudes the lower sealing edge (302).

5. The two-wire current loop communication device for underwater equipment according to claim 1, characterized in that: The lower part of the sealing ring (204) is fixedly connected with a contact ring (205), the contact ring (205) is located below the sealing ring (204), and the inner diameter of the sealing ring (204) is smaller than the diameter of the mounting end of the pressure probe (400).

6. The two-wire current loop communication device of an underwater apparatus according to claim 5, wherein: The contact ring (205) is obliquely arranged and contacts the lower part of the sealing ring (204), and the distance between the contact ring (205) and the mounting end of the pressure probe (400) is smaller than the thickness of the sealing ring (204).

7. The two-wire current loop communication device of an underwater apparatus according to claim 5, wherein: The outer ring of the sealing ring (204) is provided with a containing groove (303), and sealing glue is injected into the containing groove (303).

8. The two-wire current loop communication device for underwater equipment according to claim 1, wherein: The metal shell of the pressure probe (400) and the device shell (100) are insulated, and the metal shell of the pressure probe (400) and the device shell (100) are not conductive, and can be used as two communication lines.

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