A device and method for underwater equipment disassembly prevention and leakage monitoring

Abstract

The present invention discloses a device and method for underwater equipment anti-dismantling and leakage monitoring, and relates to the technical field of underwater equipment anti-dismantling and leakage monitoring. The device integrates anti-dismantling detection and leakage monitoring into a shell, which is convenient for disassembly and use. By collecting temperature, humidity, and air pressure signals in the area to be monitored, and comparing them with the linear relationship formula between the three written in the microcontroller, the humidity and air pressure at the corresponding temperature are calculated based on the temperature, and then the dynamic threshold values ​​of humidity and air pressure are obtained by combining the environmental coefficient. The collected signal is compared with the dynamic threshold value to obtain a leakage or anti-dismantling alarm and feed it back to the control center. By monitoring the disassembly status of underwater equipment for a long time, the risk of equipment damage caused by users or non-related personnel disassembling the equipment is reduced; at the same time, the leakage status in the area to be monitored of the underwater equipment is monitored and recorded in real time and reliably, reducing the risk of equipment damage due to water ingress caused by failure to timely discover and deal with equipment leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater equipment anti-disassembly and anti-leakage monitoring, and in particular to a device and method for underwater equipment anti-disassembly and leakage monitoring. Background Art

[0002] Underwater equipment, especially high-precision instruments for underwater applications, generally have high requirements for air tightness, and the disassembly and assembly of equipment usually requires some special key processes. On the other hand, its core controller is set in a sealed cabin, and the controller generally contains some core secrets of the company itself. Users or third parties are usually not allowed to disassemble and assemble without permission and training. It is difficult for equipment that is not disassembled and reassembled according to regulations or specific processes to meet the air tightness standards at the time of leaving the factory. After being launched into the water, the equipment is easily damaged by water entering. At present, underwater equipment still uses some traditional mechanical methods for anti-disassembly protection before leaving the factory, such as painting, engraving, etc. However, as the equipment is used for a long time, these mechanical anti-disassembly means may age and degrade, or after disassembly, the anti-disassembly mark may be forged to create the illusion that it has not been disassembled.

[0003] At the same time, underwater equipment is used underwater, and the water conditions are changeable, including underwater pressure, water temperature, impact forces from different directions, salinity, pH, etc. of the water body also change. Users also need to monitor the leakage conditions in the equipment in real time to avoid equipment damage and mission failure. At present, most underwater equipment is still sealed by mechanical compression (stress compression of the sealing ring), but as the use time of instruments and equipment increases and the use environment changes, the sealed protective equipment may age, and the risk of leakage increases when used in some complex water conditions. If the permeability in the closed compartment of the underwater equipment is not monitored in real time, it will bring serious safety hazards and may eventually cause serious economic losses. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for underwater equipment anti-dismantling and leakage monitoring, so as to solve the problem that the existing underwater equipment is anti-dismantling and sealing by mechanical means, but the anti-dismantling effect is poor, the seal is aged and there is no leakage monitoring.

[0005] In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a device for underwater equipment anti-dismantling and leakage monitoring, characterized in that: it includes a microcontroller, a temperature and humidity sensor module, an air pressure sensor module, a voltage management module, a serial communication unit and a shell, the shell is sealed with a microcontroller, a temperature and humidity sensor module, an air pressure sensor module, a voltage management module, and a serial communication unit; the microcontroller is respectively connected to the temperature and humidity sensor module, the air pressure sensor module, the voltage management module, and the serial communication unit by signal; the voltage management module is respectively connected to the microcontroller, the temperature and humidity sensor module, the air pressure sensor module, and the serial communication unit by electrical signal, and the voltage management module is connected to a battery power supply.

[0006] A further technical solution is that an external power interface is provided on the side wall of the shell, and a relay and a power switching circuit are provided inside the shell. The external power interface is connected to the relay, the power switching circuit, and the voltage management module electrical signals in sequence, and the power switching circuit is connected to the battery power electrical signals.

[0007] A further technical solution is that an anti-disassembly detection device interface is provided on the side wall of the shell, one end of the anti-disassembly detection device interface is connected to the microcontroller signal, and the other end is connected to the anti-disassembly detection device signal.

[0008] A further technical solution is that the anti-dismantling device is composed of a wire, a probe and a probe piece. When the probe and the probe piece are in contact, a low-level signal is generated, and when the probe and the probe piece are disconnected, a high-level signal is generated. The probe and the probe piece are respectively connected to the anti-dismantling detection device interface through the wire.

[0009] A further technical solution is that an indicator light module and a passive buzzer are arranged in the shell, and the indicator light module and the passive buzzer are respectively connected to the microcontroller signal.

[0010] The present invention also discloses a method for underwater equipment anti-disassembly and leakage monitoring, which is characterized by comprising the following steps:

[0011] (1) The device is installed in the enclosed space of the device to be monitored, the external power interface is connected to the power supply of the device to be monitored, and the serial communication unit is connected to the main control system of the device to be monitored; the probe is fixed to the end cover, and the probe piece is fixed to the side wall of the enclosed space. After the end cover is closed, the probe and the probe piece are in contact and conductive;

[0012] (2) Start the device to perform initialization settings and write the date and monitoring items into the microcontroller;

[0013] (3) The temperature and humidity sensor module feeds back the collected temperature and humidity data to the microcontroller, and the air pressure sensor module feeds back the collected air pressure data to the microcontroller. The microcontroller uses temperature as an index and obtains the dynamic threshold values ​​of air pressure and humidity through the linear relationship between humidity, air pressure and temperature. If the humidity and air pressure values ​​exceed the dynamic threshold values ​​or the slope changes significantly, it is determined that there is a leak or the device has been disassembled, and the result is fed back to the main control system of the monitored device through the serial communication unit.

[0014] A further technical solution is to simultaneously detect the conductivity of the probe and the probe piece in step (3), generate a low-level signal when the probe and the probe piece are in contact, and generate a high-level signal when the probe and the probe piece are disconnected; the generated high-level signal generates an anti-disassembly alarm signal data and writes it into the microcontroller.

[0015] A further technical solution is that in step (3), a large window sliding filter is first used to process the collected temperature, humidity and air pressure; if it is determined that there is a leakage, a small window sliding filter is started to continuously collect temperature, humidity and air pressure at intervals within a time window. When they all exceed the dynamic threshold value or the slope changes significantly, a leakage alarm signal is generated, written into the microcontroller and fed back to the main control system of the monitored device.

[0016] Working principle: The device is in black box mode as a whole. The internal components are encapsulated in the shell by glue filling, leaving only the necessary external interfaces to achieve communication and power supply. When in use, the monitoring device is installed in the confined space of the underwater equipment, and its external power interface is connected to the equipment power supply. When the equipment is in working state, the relay is turned on, and the power switching circuit is switched to the power supply of the equipment, and the battery power supply in the shell can be charged at the same time. When the equipment is not in working state, the relay is disconnected, and the power switching circuit is switched to the battery power supply, so that the monitoring work of this device is not interrupted.

[0017] After the device is installed, start the device for initialization settings, including time settings, monitoring items selection, and working environment settings. After the settings are completed, the device enters the sleep state of the working cycle. When it detects that the equipment is disassembled or leaking, it enters the working state, writes the anti-disassembly alarm signal and leakage alarm signal into the microcontroller for recording, and feeds back to the main control center of the monitored equipment through the serial communication unit for processing by the operator.

[0018] Specifically, the temperature and humidity sensor module feeds back the collected temperature and humidity data to the microcontroller, and the air pressure sensor module feeds back the collected air pressure data to the microcontroller. The microcontroller uses temperature as an index and obtains the dynamic threshold values ​​of air pressure and humidity through the linear relationship between humidity, air pressure and temperature. If the humidity and air pressure values ​​exceed the dynamic threshold values ​​or the slope changes significantly, it is determined that there is a leak or the system has been disassembled, and the information is fed back to the operator for processing.

[0019] Among them, disassembly can also be assisted by an external anti-disassembly monitoring device to make a judgment, detect the conductivity between the probe and the probe piece, generate a low-level signal when the probe and the probe piece are in contact, and generate a high-level signal when the probe and the probe piece are disconnected; the generated high-level signal generates an anti-disassembly alarm signal data and is written into the microcontroller.

[0020] Leakage can also start a small window sliding filter to continuously collect temperature, humidity, and air pressure at intervals within a time window. When they all exceed the dynamic threshold value or the slope changes significantly, a leakage alarm signal is generated.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. This device integrates anti-disassembly detection and leakage monitoring into one housing, which is convenient for disassembly and use. By monitoring the disassembly status of underwater equipment for a long time, it reduces the risk of equipment damage caused by users or non-related personnel disassembling the equipment; at the same time, it monitors and records the leakage status of underwater equipment in the monitored area in real time and reliably, reducing the risk of equipment damage due to water ingress if the equipment leakage is not discovered and handled in time.

[0023] 2. By collecting the temperature, humidity and air pressure signals in the monitored area, and comparing them with the linear relationship formula between the three written in the microcontroller, the humidity and air pressure at the corresponding temperature are calculated based on the temperature, and then the dynamic threshold values ​​of humidity and air pressure are obtained by combining the environmental coefficient. The collected signal is compared with the dynamic threshold value to obtain a leakage or anti-dismantling alarm and feed it back to the control center.

[0024] 3. Through the power switching circuit, when the monitored device is working, the device power supply is used to power the device and charge the battery power supply. When the device is not working, the battery power supply is used to power the device, so that the device can work for a long time and ensure the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a principle block diagram of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the present invention.

[0027] Figure 3 The figure is a flow chart of leakage detection of the present invention.

[0028] Figure 4 It is a graph of air pressure, temperature and humidity in a confined space.

[0029] Figure 5 It is a curve diagram of the dynamic threshold value of air pressure at different temperatures in the present invention.

[0030] Figure 6 It is a comparison diagram of the leakage determination and disassembly curve and the initial curve in the present invention.

[0031] In the figure: 1- microcontroller, 2- temperature and humidity sensor module, 3- air pressure sensor module, 4- voltage management module, 5- serial communication unit, 6- housing, 7- relay, 8- power switching circuit, 9- battery power supply, 10- wire, 11- probe, 12- probe piece, 13- indicator light module, 14- passive buzzer. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] Example

[0034] Figure 1 The present invention shows a device for underwater equipment anti-disassembly and leakage monitoring, including a microcontroller 1, a temperature and humidity sensor module 2, an air pressure sensor module 3, a voltage management module 4, a serial communication unit 5 and a housing 6. The microcontroller 1 adopts an FM3313 single-chip microcomputer with a real-time clock module, and the serial communication unit 5 can adopt an RS485 or RS323 serial communication chip. The voltage management module 4 mainly converts the voltage into a low voltage to supply the microcontroller 1, the temperature and humidity sensor module 2, the air pressure sensor module 3, the voltage management module 4, and the serial communication unit 5. The device is powered by a battery power supply 9. Figure 2 As shown, the microcontroller 1, the temperature and humidity sensor module 2, the air pressure sensor module 3, the voltage management module 4, the serial communication unit 5, and the battery power supply 9 are sealed in the shell 6 by glue filling, and the interface of the serial communication unit 5 is left on the side wall of the shell 6.

[0035] In order to facilitate observation of the working status of the device, an indicator light module 13 and a passive buzzer 14 are provided in the shell 6. The indicator light module 13 displays the working status of the device through a vertical LED light, and the passive buzzer 14 emits a buzzing warning when the microcontroller 1 determines that the device is disassembled and there is leakage.

[0036] In order to ensure that the working state of the device is not interrupted due to insufficient power of the power battery 9, an external power interface is provided on the side wall of the housing 6, and a relay 7 and a power switching circuit 8 are provided inside the housing 6. The external power interface is connected to the relay 7, the power switching circuit 8, and the voltage management module 4 in sequence, and the power switching circuit 8 is connected to the battery power 9. When in use, the external power interface is connected to the device power supply. When the device is in the working state, the relay 7 is turned on, and the power switching circuit 8 is switched to the device power supply, and the battery power 9 in the housing 6 can be charged at the same time. When the device is in the non-working state, the relay 7 is disconnected, and the power switching circuit 8 is switched to the battery power 9 for power supply, so that the monitoring work of the device is not interrupted.

[0037] In order to further improve the anti-disassembly detection, an anti-disassembly detection device interface is provided on the side wall of the shell 6. One end of the anti-disassembly detection device interface is connected to the microcontroller 1 signal, and the other end is connected to the anti-disassembly detection device signal. The anti-disassembly device is composed of a wire 10, a probe 11 and a probe piece 12. The probe 11 is a V-shaped metal sheet. The probe 11 and the probe piece 12 are respectively connected to the anti-disassembly detection device interface through the wire 10. When in use, the probe 11 is fixed to the end cover of the area to be monitored, and the probe piece 12 is fixed to the side wall of the enclosed space. After the end cover is closed, the probe 11 and the probe piece 12 are in contact and conductive. When the probe 11 and the probe piece 12 are in contact, they are conductive and generate a low-level signal. When the end cover is removed, the probe 11 and the probe piece 12 are disconnected, generating a high-level signal. Thus, the disassembly status of the equipment to be monitored is further confirmed.

[0038] The monitoring method of the device comprises the following steps:

[0039] (1) The device is installed in the enclosed space of the device to be monitored, the external power interface is connected to the power supply of the device to be monitored, and the serial communication unit 5 is connected to the main control system of the device to be monitored; the probe 11 is fixed to the end cover, and the probe piece 12 is fixed to the side wall of the enclosed space. After the end cover is closed, the probe 11 and the probe piece 12 are in contact and conductive.

[0040] (2) Start the device to perform initialization settings and write the date and monitoring items into the microcontroller 1.

[0041] (3) For underwater equipment, after assembly, its internal space is fixed and enclosed. Figure 4As shown, the air pressure and humidity in the confined space change linearly with the temperature, especially in the temperature range of 10-40°C. However, different underwater equipment may have slight differences depending on their own internal environment. This can be done by testing the underwater equipment in a certain water environment after it is assembled. The air pressure, temperature and humidity data over a period of time are collected by this device. After fitting a large number of sample values, the linear relationship between air pressure and temperature, and humidity and temperature is obtained, and written into the microcontroller 1 as the initial change curve. At the same time, in order to eliminate interference errors and ensure a certain degree of robustness, a dynamic threshold curve parallel to the initial change curve is set, such as Figure 5 This process can be written into the microcontroller 1 as a fixed curve, or can be adjusted in real time by the microcontroller 1 in combination with the underwater equipment's underwater operating conditions.

[0042] (4) After the device starts working, the temperature and humidity sensor module 2 feeds back the collected temperature and humidity data to the microcontroller 1, and the air pressure sensor module 3 feeds back the collected air pressure data to the microcontroller 1. The microcontroller 1 uses temperature as an index and obtains the dynamic threshold values ​​of air pressure and humidity through the linear relationship between humidity, air pressure and temperature. If the collected humidity and air pressure values ​​exceed the dynamic threshold values, it is determined that there is leakage or disassembly. If the collected humidity and air pressure values ​​are between the upper and lower limits of the dynamic threshold, further detection is performed to determine.

[0043] When a high-level signal is detected between the probe 11 and the probe piece 12 at the same time, it is determined that the device has been disassembled, and the generated high-level signal is used to generate an anti-disassembly alarm signal data and written into the microcontroller. If the signal between the probe 11 and the probe piece 12 is still a low-level signal, the small window sliding filter is started, and the temperature, humidity, and air pressure are continuously collected at intervals within the 2-minute window. The above steps are repeated. When they all exceed the dynamic threshold value, a leakage alarm signal is generated, written into the microcontroller 1 and fed back to the main control system of the device to be monitored. When it is between the upper and lower limits of the dynamic threshold, it is refitted into a new curve, such as Figure 6 As shown, when the slope of the curve increases significantly compared with the slope of the initial change curve, it is determined to be leakage, and when the slope becomes significantly smaller, it is determined to be disassembled.

[0044] The sliding filtering algorithm can eliminate false alarms caused by temperature, humidity, and air pressure jumps. At the same time, the fitting algorithm can be used to fit the current data with the historical data.

[0045] When the device is installed inside the monitored equipment, it can also monitor the air temperature and humidity conditions inside the equipment in real time, and according to the temperature range of the equipment, eliminate the occurrence of condensation in the internal space of the equipment and issue a condensation alarm.

[0046] When the device detects and determines that there is no leakage in the equipment, the relay of the device will be kept on. When the device detects and determines that there is leakage in the equipment, the device will cut off the relay and give an alarm through communication or sound and light.

[0047] Although the present invention is described herein with reference to a number of illustrative embodiments of the present invention, it will be appreciated that those skilled in the art may devise numerous other modifications and implementations that will fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, drawings, and claims, a variety of variations and modifications may be made to the components or layout. In addition to variations and modifications made to the components or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A device for underwater equipment dismantling prevention and leakage monitoring, characterized in that: The invention comprises a microcontroller (1), a temperature and humidity sensor module (2), an air pressure sensor module (3), a voltage management module (4), a serial communication unit (5) and a housing (6); the housing (6) is sealed with the microcontroller (1), the temperature and humidity sensor module (2), the air pressure sensor module (3), the voltage management module (4) and the serial communication unit (5); the microcontroller (1) is respectively connected to the temperature and humidity sensor module (2), the air pressure sensor module (3), the voltage management module (4) and the serial communication unit (5); the The voltage management module (4) is respectively connected to the microcontroller (1), the temperature and humidity sensor module (2), the air pressure sensor module (3), and the serial communication unit (5) by electrical signals, and the voltage management module (4) is connected to a battery power supply (9); the temperature and humidity sensor module (2) feeds back the collected temperature and humidity data to the microcontroller (1), and the air pressure sensor module (3) feeds back the collected air pressure data to the microcontroller (1); the microcontroller (1) uses temperature as an index and obtains dynamic threshold values ​​of air pressure and humidity through the linear relationship between humidity, air pressure and temperature.

2. The device for underwater equipment disassembly prevention and leakage monitoring according to claim 1, characterized in that: An external power interface is provided on the side wall of the housing (6), and a relay (7) and a power switching circuit (8) are provided inside the housing (6). The external power interface is connected to the relay (7), the power switching circuit (8), and the voltage management module (4) in sequence by electrical signals, and the power switching circuit (8) is connected to the battery power supply (9) by electrical signals.

3. The device for underwater equipment disassembly prevention and leakage monitoring according to claim 1, characterized in that: An anti-disassembly detection device interface is provided on the side wall of the housing (6), one end of the anti-disassembly detection device interface is connected to the microcontroller (1) signal, and the other end is connected to the anti-disassembly detection device signal.

4. The device for underwater equipment disassembly prevention and leakage monitoring according to claim 3 is characterized in that: The anti-disassembly detection device is composed of a wire (10), a probe (11) and a probe piece (12); when the probe (11) and the probe piece (12) are in contact, they are connected to generate a low-level signal; when the probe (11) and the probe piece (12) are disconnected, a high-level signal is generated; the probe (11) and the probe piece (12) are respectively connected to the interface of the anti-disassembly detection device via the wire (10).

5. The device for underwater equipment disassembly prevention and leakage monitoring according to claim 1, characterized in that: An indicator light module (13) and a passive buzzer (14) are arranged in the housing (6); the indicator light module (13) and the passive buzzer (14) are respectively connected to the microcontroller (1) by signals.

6. A method for underwater equipment anti-disassembly and leakage monitoring, characterized in that The steps include: (1) The device is installed in a closed space of a device to be monitored, the external power interface is connected to the power supply of the device to be monitored, and the serial communication unit (5) is connected to the main control system of the device to be monitored; the probe (11) is fixed to the end cover, and the probe piece (12) is fixed to the side wall of the closed space. After the end cover is closed, the probe (11) and the probe piece (12) are in contact and conductive; (2) starting the device to perform initialization settings and writing the date and monitoring items into the microcontroller (1); (3) The temperature and humidity sensor module (2) feeds back the collected temperature and humidity data to the microcontroller (1), and the air pressure sensor module (3) feeds back the collected air pressure data to the microcontroller (1). The microcontroller (1) uses temperature as an index and obtains dynamic threshold values ​​of air pressure and humidity through the linear relationship between humidity, air pressure and temperature. If the humidity and air pressure values ​​exceed the dynamic threshold values ​​or the slope changes significantly, it is determined that there is leakage or disassembly, and the result is fed back to the main control system of the device to be monitored through the serial communication unit (5).

7. A method for underwater equipment dismantling prevention and leakage monitoring according to claim 6, characterized in that: In the step (3), the conduction status of the probe (11) and the probe piece (12) is detected simultaneously. When the probe (11) and the probe piece (12) are in contact, a low-level signal is generated; when the probe (11) and the probe piece (12) are disconnected, a high-level signal is generated; the generated high-level signal is used to generate anti-disassembly alarm signal data and is written into the microcontroller (1).

8. A method for underwater equipment disassembly prevention and leakage monitoring according to claim 6, characterized in that: The step (3) first uses a large window sliding filter to process the collected temperature, humidity, and air pressure; if it is determined that there is a leakage, a small window sliding filter is started to continuously collect temperature, humidity, and air pressure at intervals within a time window. When they all exceed the dynamic threshold value or the slope changes significantly, a leakage alarm signal is generated, written into the microcontroller (1) and fed back to the main control system of the device to be monitored.

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