Marine multimeter structure

Abstract

The invention relates to a marine multimeter structure, and relates to the technical field of ship electronic equipment, the marine multimeter structure comprises a shell assembly, the shell assembly comprises an upper shell and a lower shell, the lower shell is connected to the lower part of the upper shell, a display screen is mounted on the side, away from the lower shell, of the upper shell through bolts, and a switch is arranged on the side edge of the display screen; a switch is arranged in the upper shell, a placement groove is formed in the side, away from the display screen, of the switch, a mainboard is placed in the upper shell, the mainboard comprises an internal circuit module and a data recording and transmitting module, and the data recording and transmitting module is arranged on the side edge of the internal circuit module. A power supply module is arranged on one side, far away from the upper shell, of the main board and comprises a main power supply module and an auxiliary power supply module; automatic recording and remote transmission of data are achieved, the real-time monitoring capacity and the fault early warning capacity of ship equipment are improved, the anti-seismic support is made of an elastic rubber material, and the influence of external vibration on a circuit is effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of marine electronic equipment, and in particular to a marine multimeter structure. Background Art

[0002] At present, most of the marine multimeters widely used in the market are traditional single-function instruments. Although they show good performance under certain specific conditions, their stability, reliability and intelligence are still far from satisfactory in complex marine environments.

[0003] In the prior art, the related technology of the multimeter can refer to the Chinese patent application number CN201810315738.5, which discloses a new type of multimeter, including a multimeter body, a protective cover is sleeved on the outer surface of the multimeter body, a handle is fixedly connected to the upper surface of the protective cover, and a test lead storage device is fixedly installed on one side of the protective cover, a jack is provided on the front surface of the multimeter body, and a jack plug is fixedly connected to the lower position of the front surface of the multimeter body near the jack, and a winding board is provided on one side of the test lead storage device, and a first test lead jack is fixedly connected to the upper surface of the winding board. The problem that by setting the first test lead jack and the second test lead jack, the two ends of the test lead can be protected to avoid being injured by the test lead, and by setting the first winding groove, the excess wire of the test lead can be wound up, saving space.

[0004] The inventors found the following problems in the prior art during the implementation of this application: The main drawback of the prior art is that it has poor environmental adaptability, especially under harsh conditions such as high temperature, high humidity, vibration and salt spray corrosion, traditional multimeters are difficult to work stably for a long time. In addition, these instruments generally lack data recording and remote transmission functions, and cannot achieve real-time monitoring and fault warning, which is not conducive to the status management and maintenance of ship equipment. Summary of the invention

[0005] The purpose of this application is to provide a marine multimeter structure.

[0006] The present application provides a marine multimeter structure adopting the following technical solution: A marine multimeter structure comprises a shell assembly, a mainboard and a power module, wherein the shell assembly comprises an upper shell and a lower shell, and the lower shell is connected to the lower part of the upper shell, and a display screen is installed on the side of the upper shell away from the lower shell by bolts, and a switch is arranged on the side of the display screen, and a placement groove is arranged on the side of the switch away from the display screen, and a mainboard is placed inside the upper shell, and the mainboard comprises an internal circuit module and a data recording and transmission module, and the data recording and transmission module is arranged on the side of the internal circuit module, and a power module is arranged on the side of the mainboard away from the upper shell, and a sealing plate is arranged on the side of the power module away from the mainboard, and the power module comprises a main power module and a secondary power module, and the secondary power module is arranged on the side of the main power module.

[0007] By adopting the above technical solution, the multimeter is made of high-strength plastic material with a waterproof and dustproof level of IP67, and the surface is coated with an anti-corrosion coating, which has good sealing performance. The shell is divided into upper and lower parts, which are fixed by screws to ensure the stability of the overall structure. During the detection process, the mainboard in the upper shell transmits and stores data through the internal circuit module and the data recording and transmission module, which improves the stability and reliability of the multimeter in the complex and changeable ship environment. Automatic recording and remote transmission of data are realized.

[0008] The upper shell and the lower shell are made of high-strength plastic material with a waterproof and dustproof grade of IP, and the outer surfaces of the upper shell and the lower shell are coated with an anti-corrosion coating, and a connecting ring is provided on the side of the upper shell away from the display screen, and a docking ring is provided at the edge of the lower shell, and buckles are installed at the edges of the connecting ring and the docking ring, and a rubber sealing strip is placed between the connecting ring and the docking ring.

[0009] By adopting the above technical solution, the high-strength plastic material of the upper shell and the lower shell is a polycarbonate material, which has excellent mechanical strength and weather resistance, and the anti-corrosion coating applied to the upper shell and the lower shell is made of an epoxy resin coating, which has excellent anti-corrosion performance. When the upper shell and the lower shell are merged, the connecting ring of the upper shell and the docking ring of the lower shell are added with a rubber sealing strip, so that after the upper shell and the lower shell are merged, the gap between the upper shell and the lower shell is sealed by the sealing strip, thereby blocking the entry of water droplets and dust.

[0010] Three groups of clamping columns are arranged on the four sides of the main board, and three groups of clamping slots are arranged on the inner wall of the lower shell, and the upper shell and the lower shell are detachably connected by the three groups of clamping columns, the three groups of clamping slots and bolts.

[0011] By adopting the above technical solution, when the upper shell and the lower shell are combined, the two are fixed by combining the clamping column and the clamping groove and tightening them with bolts.

[0012] Two groups of limit bars are arranged above the inner wall of the lower shell, and the two groups of limit bars are symmetrically placed, and connecting bars are connected above the limit bars, and through-hole rotating conductive slip rings are connected at the centers of the two groups of connecting bars.

[0013] By adopting the above technical solution, the limiting strip is used to connect and fix the connecting strip, and then the through-hole rotating conductive slip ring is installed and limited by the connecting strip.

[0014] The internal circuit module includes a high-precision ADC module, a temperature compensation module and an anti-vibration bracket, and the temperature compensation module is arranged below the high-precision ADC module, and an anti-vibration bracket that penetrates the main board is arranged on the side of the temperature compensation module away from the high-precision ADC module, and the anti-vibration bracket is specifically made of elastic rubber material.

[0015] By adopting the above technical solutions, the high-precision ADC module is used to accurately collect various electrical signals, the temperature compensation module ensures the accuracy of the measurement results at different temperatures, and the anti-vibration bracket adopts elastic rubber material to effectively reduce the impact of external vibration on the circuit.

[0016] The data recording and transmission module includes a MUC module, a large-capacity storage module and a 4G module. The large-capacity storage module is arranged on the side of the MUC module, and the 4G module is arranged on the side of the large-capacity storage module away from the MUC module.

[0017] By adopting the above technical solutions, the built-in large-capacity storage module supports automatic data recording and transmits data to the cloud server in real time through the 4G module. A low-power MUC module is integrated in the data recording and transmission module to be responsible for data processing and transmission control.

[0018] The lower end surface of the lower shell is provided with four groups of plug-in frames, and two groups of pin slots are provided between the four groups of plug-in frames, and the two groups of pin slots are symmetrically placed, and a fixing slot is provided between the two groups of pin slots.

[0019] By adopting the above technical solution, the pin groove is used to limit the connecting strip, and when it is used, the fixing groove can pass the wire and be used.

[0020] In summary, the present application includes at least one of the following beneficial technical effects: 1. The mainboard includes an internal circuit module and a data recording and transmission module. A high-precision ADC module is used to accurately collect various electrical signals. The temperature compensation circuit ensures the accuracy of the measurement results at different temperatures. It has a built-in large-capacity memory, supports automatic data recording, and transmits data to the cloud server in real time through a 4G module. The module also integrates a low-power MCU module, which is responsible for data processing and transmission control, realizes automatic data recording and remote transmission, and improves the real-time monitoring and fault warning capabilities of ship equipment. The anti-seismic bracket is made of elastic rubber material to effectively reduce the impact of external vibration on the circuit; 2. The multimeter is made of high-strength plastic material with a waterproof and dustproof grade of IP67, and the surface is coated with an anti-corrosion coating. It has good sealing performance. The shell is divided into two parts, upper and lower, which are fixed by screws to ensure the stability of the overall structure, improve the stability and reliability of the multimeter in the complex and changeable ship environment, and avoid long-term use under extreme conditions to prevent damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a housing assembly of Example 1 of the present application; Figure 2 is a schematic diagram of the upper housing structure of Example 1 of the present application; Figure 3 is a right side structural schematic diagram of the connecting ring of Example 1 of the present application; Figure 4 is a right side structural schematic diagram of the docking ring of Example 1 of the present application; Figure 5 is a schematic diagram of the front view structure of the display screen of Example 1 of the present application; Figure 6 is a schematic diagram of the structure of a through-hole rotating conductive slip ring according to Embodiment 1 of the present application; Figure 7 is a schematic diagram of the anti-corrosion coating structure of Example 1 of the present application; Figure 8 is a schematic diagram of the top view of the lower housing of Example 1 of the present application; Fig. 9 is a front view structural schematic diagram of the upper housing of Example 1 of the present application; Fig.10 It is a schematic diagram of the structure of the mainboard and power module of Example 1 of the present application.

[0022] Explanation of the reference numerals: 1. Shell assembly; 2. Display screen; 3. Upper shell; 301. Anti-corrosion coating; 302. Connecting ring; 4. Lower shell; 401. Docking ring; 5. Plug-in rack; 6. Pin slot; 7. Fixing slot; 8. Buckle; 9. Rubber sealing strip; 10. Card column; 1001. Card slot; 11. Switch; 12. Placement slot; 13. Through-hole rotating conductive slip ring; 14. Connecting strip; 15. Limiting strip; 16. Mainboard; 1601. Internal circuit module; 1602. Data recording and transmission module; 17. Power module; 18. Main power module; 1801. Auxiliary power module; 19. High-precision ADC module; 20. Temperature compensation module; 21. MUC module; 22. Large-capacity storage module; 23. 4G module; 24. Anti-seismic bracket. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1 - Attachment Fig.10 , further details of this application are given.

[0024] Embodiment 1: A marine multimeter structure, including a housing assembly 1, a mainboard 16 and a power module 17, the housing assembly 1 including an upper housing 3 and a lower housing 4, the lower portion of the upper housing 3 being connected to the lower housing 4, the side of the upper housing 3 away from the lower housing 4 being mounted with a display screen 2 by bolts, the side of the display screen 2 being provided with a switch 11, the side of the switch 11 away from the display screen 2 being provided with a placement slot 12, the interior of the upper housing 3 being provided with a mainboard 16, the mainboard 16 including an internal circuit module 1601 and a data recording and transmission module 1602, the side of the internal circuit module 1601 being provided with the data recording and transmission module 1602, the side of the mainboard 16 away from the upper housing 3 being provided with a power module 17, and the mainboard 16 A power module 17 is arranged on the side away from the upper shell 3, and a sealing plate is arranged on the side of the power module 17 away from the main board 16, and the power module 17 includes a main power module 18 and an auxiliary power module 1801, and the auxiliary power module 1801 is arranged on the side of the main power module 18. The multimeter is made of high-strength plastic material with a waterproof and dustproof grade of IP67. The shell assembly 1 is divided into two parts, upper and lower parts, which are fixed by screws to ensure the stability of the overall structure. During the detection process, the main board 16 in the upper shell 3 transmits and stores data through the internal circuit module 1601 and the data recording and transmission module 1602, thereby improving the stability and reliability of the multimeter in the complex and changeable ship environment. To realize automatic recording and remote transmission of data, the power module 17 adopts a dual power supply system. The main power module 18 is a shipboard battery, and the auxiliary power module 1801 is a built-in rechargeable lithium battery, ensuring that the multimeter can still work normally when the main power is disconnected. The auxiliary power module 1801 uses LG's 18650 battery with a capacity of 3500mAh.

[0025] The upper shell 3 and the lower shell 4 are made of high-strength plastic material with a waterproof and dustproof grade of IP67, and the outer surfaces of the upper shell 3 and the lower shell 4 are coated with an anti-corrosion coating 301, and a connecting ring 302 is provided on the side of the upper shell 3 away from the display screen 2, and a docking ring 401 is provided at the edge of the lower shell 4, and buckles 8 are installed at the edges of the connecting ring 302 and the docking ring 401, and a rubber sealing strip 9 is placed between the connecting ring 302 and the docking ring 401. Ester material has excellent mechanical strength and weather resistance, and the anti-corrosion coating 301 coated on the upper shell 3 and the lower shell 4 is made of epoxy resin coating, which has excellent anti-corrosion performance. When the upper shell 3 and the lower shell 4 are merged, the connecting ring 302 of the upper shell 3 and the docking ring 401 of the lower shell 4 are added with a rubber sealing strip 9, so that after the upper shell 3 and the lower shell 4 are merged, the gap between the upper shell 3 and the lower shell 4 is sealed by the sealing strip, thereby blocking the entry of water droplets and dust.

[0026] Three groups of card columns 10 are provided on the four sides of the main board 16, and three groups of card slots 1001 are provided on the upper inner wall of the lower shell 4, and the upper shell 3 and the lower shell 4 are detachably connected by the three groups of card columns 10, the three groups of card slots 1001 and bolts, and when the upper shell 3 and the lower shell 4 are merged, the two merge the card columns 10 and the card slots 1001 and tighten them by bolts, so as to complete the fixing of the upper shell 3 and the lower shell 4, and then the main board 16 and the display screen 2 are electrically connected, and the main board 16 is sealed in the upper shell 3 at the innermost end of the upper shell 3 through the sealing plate, and the sealing plate cooperates with the rubber ring to seal the main board 16 into the innermost end of the upper shell 3, and completes the fixing and sealing of the main board 16.

[0027] Two groups of limit bars 15 are arranged above the inner wall of the lower shell 4, and the two groups of limit bars 15 are placed symmetrically, and connecting bars 14 are connected above the limit bars 15, and a through-hole rotating conductive slip ring 13 is connected at the center of the two groups of connecting bars 14, wherein the limit bars 15 are used to connect and fix the connecting bars 14, and then the through-hole rotating conductive slip ring 13 is installed and limited by the connecting bars 14.

[0028] The internal circuit module 1601 includes a high-precision ADC module 19, a temperature compensation module 20 and an anti-vibration bracket 24, and the temperature compensation module 20 is arranged below the high-precision ADC module 19, and an anti-vibration bracket 24 that penetrates the main board 16 is arranged on the side of the temperature compensation module 20 away from the high-precision ADC module 19, and the anti-vibration bracket 24 is specifically made of elastic rubber material. Then the high-precision ADC module 19 is used to accurately collect various electrical signals. The model of the high-precision ADC module 19 adopts AD7798 of ADI Company, wherein the resolution is 24 bits and the sampling rate is as high as 15SPS. The temperature compensation module 20 ensures the accuracy of the measurement results at different temperatures. The model of the temperature compensation module 20 adopts the LM35 temperature sensor with good linearity and high precision. The anti-vibration bracket 24 adopts elastic rubber material, which effectively reduces the influence of external vibration on the circuit, and the vibration reduction effect is significant.

[0029] The data recording and transmission module 1602 includes a MUC module 21, a large-capacity storage module 22 and a 4G module 23. The large-capacity storage module 22 is arranged on the side of the MUC module 21, and the 4G module 23 is arranged on the side of the large-capacity storage module 22 away from the MUC module 21. Then, through the built-in large-capacity storage module 22, automatic data recording is supported. The large-capacity storage module 22 adopts the NAND Flash memory produced by Toshiba, with a capacity of 32GB, and transmits data to the cloud server in real time through the 4G module 23. The model of the 4G module 23 adopts the SIM7600E-H chip, which supports the global mainstream frequency bands and has a high transmission rate. In addition, a low-power MUC module 21 is integrated in the data recording and transmission module 1602, and the model of the MUC module 21 adopts the STM32F103 series microcontroller, which has low power consumption and high performance, and is responsible for data processing and transmission control.

[0030] Four groups of plug-in frames 5 are arranged on the lower end surface of the lower housing 4 , and two groups of pin slots 6 are arranged between the four groups of plug-in frames 5 . The two groups of pin slots 6 are symmetrically placed, and a fixing slot 7 is arranged between the two groups of pin slots 6 .

[0031] The implementation principle of the embodiment of the present application is: install the multimeter near the ship equipment, ensure that the surrounding environment meets the IP67 standard, turn on the main power module 18 in the power module 17, check whether the indicator light is normally on, and then start the multimeter, power it through the main power module 18, if the main power module 18 is disconnected, switch to the auxiliary power module 1801 for power supply, select the required measurement mode, press the corresponding button to start measuring, and then collect voltage, current, resistance and other signals through the high-precision ADC module 19 in the main board 16 installed in the shell component 1, and after adjustment by the temperature compensation module 20, send it to the MUC module 21 for processing, and then the MUC module 21 stores the processed data in the large-capacity storage module 22, and uploads it to the cloud server in real time through the 4G module 23, and then after the cloud server receives the data, it uses the AI ​​algorithm to analyze the data, generate a fault warning report, and send it to the user terminal.

[0032] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are identified by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A marine multimeter structure, comprising a housing assembly (1), a mainboard (16) and a power module (17), characterized in that: The housing assembly (1) comprises an upper housing (3) and a lower housing (4), wherein the lower housing (4) is connected to the lower portion of the upper housing (3), a display screen (2) is mounted on a side of the upper housing (3) away from the lower housing (4) via bolts, a switch (11) is arranged on a side of the display screen (2), and a placement groove (12) is arranged on a side of the switch (11) away from the display screen (2), and a main board (16) is placed inside the upper housing (3), and the main board (16) comprises an internal circuit module (1601) and A data recording and transmission module (1602) is provided on the side of the internal circuit module (1601), a power module (17) is provided on the side of the mainboard (16) away from the upper housing (3), a sealing plate is provided on the side of the power module (17) away from the mainboard (16), the power module (17) includes a main power module (18) and a secondary power module (1801), and the secondary power module (1801) is provided on the side of the main power module (18).

2. A marine multimeter structure according to claim 1, characterized in that: The upper shell (3) and the lower shell (4) are made of a high-strength plastic material with a waterproof and dustproof grade of IP67, and the outer surfaces of the upper shell (3) and the lower shell (4) are coated with an anti-corrosion coating (301), and a connecting ring (302) is provided on the side of the upper shell (3) away from the display screen (2), and a docking ring (401) is provided at the edge of the lower shell (4), and buckles (8) are installed at the edges of the connecting ring (302) and the docking ring (401), and a rubber sealing strip (9) is placed between the connecting ring (302) and the docking ring (401).

3. A marine multimeter structure according to claim 1, characterized in that: Three groups of clamping columns (10) are arranged on the four sides of the main board (16), and three groups of clamping grooves (1001) are arranged on the upper inner wall of the lower shell (4), and the upper shell (3) and the lower shell (4) are detachably connected via the three groups of clamping columns (10), the three groups of clamping grooves (1001) and bolts.

4. A marine multimeter structure according to claim 1, characterized in that: Two groups of limit bars (15) are arranged above the inner wall of the lower housing (4), and the two groups of limit bars (15) are symmetrically placed. Connecting bars (14) are connected above the limit bars (15), and through-hole rotating conductive slip rings (13) are connected at the centers of the two groups of connecting bars (14).

5. A marine multimeter structure according to claim 1, characterized in that: The internal circuit module (1601) includes a high-precision ADC module (19), a temperature compensation module (20) and an anti-vibration bracket (24), and the temperature compensation module (20) is arranged below the high-precision ADC module (19), and an anti-vibration bracket (24) penetrating the main board (16) is arranged on a side of the temperature compensation module (20) away from the high-precision ADC module (19), and the anti-vibration bracket (24) is specifically made of elastic rubber material.

6. A marine multimeter structure according to claim 1, characterized in that: The data recording and transmission module (1602) comprises a MUC module (21), a large-capacity storage module (22) and a 4G module (23), and the large-capacity storage module (22) is arranged on the side of the MUC module (21), and the 4G module (23) is arranged on the side of the large-capacity storage module (22) away from the MUC module (21).

7. A marine multimeter structure according to claim 1, characterized in that: Four groups of plug-in frames (5) are arranged on the lower end surface of the lower housing (4), and two groups of pin slots (6) are arranged between the four groups of plug-in frames (5). The two groups of pin slots (6) are symmetrically arranged, and a fixing slot (7) is arranged between the two groups of pin slots (6).

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