Safety early warning device for power cable well

Abstract

The invention provides a power cable well safety early warning device, and belongs to the technical field of power equipment, and the power cable well safety early warning device comprises a bottom shell, a millimeter wave radar, a sealing control box, a lithium mobile power supply, an infrared sensor, a vibration motor, a waterproof buzzer, a flashing lamp bead and a sealing shell cover. The millimeter-wave radar is adopted for non-contact liquid level monitoring, accumulated water in a well and well water overflowing conditions can be accurately detected, an alarm is given out in time when the limit is exceeded, electric equipment is prevented from being damaged due to water immersion, the device integrates multiple sensors such as an inclination angle sensor and a vibration sensor, the inclination, displacement and vibration states of a well lid can be monitored in real time, and the safety and reliability of the well lid are improved. The device is simple in structure and convenient to use, prevents potential safety hazards caused by loosening or missing of the well lid, is further provided with an infrared sensor and a vibration motor, can effectively detect abnormal invasion of small animals and personnel, gives out an alarm through a waterproof buzzer and a flashing lamp bead, and further guarantees the safety of electric power facilities.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and in particular to a safety early warning device for a power cable well. Background Art

[0002] In recent years, the rapid development of urban infrastructure has brought about a large number of underground power cable wells, which play a vital role in urban power supply. However, the safety management of cable wells faces many challenges. Traditional cable well safety management mainly relies on manual inspections, which not only consumes a lot of human resources, but also has the risk of missed inspections and misdetection. Especially in severe weather conditions, cable wells are prone to water accumulation, causing damage to power equipment, and even causing large-scale power outages in severe cases. In addition, loose, tilted or missing well covers may cause accidental injuries to pedestrians, and the invasion of small animals in the well may also cause gnawing damage to the cables, further increasing the safety risks of power facilities.

[0003] In order to improve the safety management level of cable wells, some products such as smart manhole cover monitors and locked manhole covers have appeared on the market in recent years. These products have played a certain role in preventing the loss and damage of manhole covers, but they are still insufficient in detecting water accumulation in the well and the invasion of small animals. At the same time, the existing products are expensive and difficult to deploy on a large scale. Summary of the invention

[0004] An embodiment of the present invention provides a power cable well safety warning device, aiming to solve the problems raised in the background technology.

[0005] The embodiment of the present invention provides a safety early warning device for a power cable well, comprising a bottom shell, two millimeter-wave radars for monitoring abnormal water accumulation and overflow in the well, a sealed control box, a lithium-terbium mobile power supply, a plurality of infrared sensors, a vibration motor, a waterproof buzzer, a flashing lamp bead and a sealed shell cover, wherein the interior of the bottom shell is divided into two radar installation cavities and one control box installation cavity by two partitions, a battery box is fixedly connected to the outer side of the bottom shell, and an annular cabin fixedly connected to the outer side of the bottom shell is provided on both sides of the bottom shell; the two millimeter-wave radars are respectively installed in the two radar installation cavities; the sealed control box is composed of a box body and a box cover, the box body is fixedly installed in the control box installation cavity, a PCB board is installed inside the box body, and the PCB board The surface is integrated with a vibration sensor, a power management module, a low-power communication module, a tilt sensor and a single-chip microcomputer; the lithium-ion mobile power supply can be detachably placed in a battery box, the positive and negative electrodes of the lithium-ion mobile power supply are fixedly connected with electrode plug-in posts, and both sides of the outer shell of the lithium-ion mobile power supply are fixedly connected with sliding bars, and the sliding bars are slidably connected with the sliding grooves provided on the inner side of the battery box; a plurality of the infrared sensors are respectively installed in two annular cabins; the vibration motor is installed in a raised compartment provided in the bottom shell; the waterproof buzzer is installed at the bottom of the bottom shell, and a plurality of flashing lamp beads are also installed at the bottom of the bottom shell; the sealed shell cover is installed at the top of the bottom shell, and when the sealed shell cover is closed with the bottom shell and the battery box cover, the bottom shell is evacuated and filled with inert gas.

[0006] In one embodiment of the present invention, a printed circuit board is embedded in the internal interlayer of the bottom shell, and a plurality of studs are fixedly connected to the interior of the bottom shell. A pin seat embedded in the interior of the bottom shell is provided at the inner bottom end of the control box mounting cavity, and a slot of the pin seat is engaged with a pin of the PCB board, and the pin seat is also connected to a circuit corresponding to the printed circuit board.

[0007] In one embodiment of the present invention, a sealing cover is detachably connected to the box opening at one end of the battery box by screws, a transparent observation window is provided on the surface of the sealing cover, and a silicone sealing button is also provided on the surface of the sealing cover, the observation window is directly opposite to the display position of the lithium-ion battery mobile power supply, and the silicone sealing button is directly opposite to the screen switch button position of the lithium-ion battery mobile power supply.

[0008] In one embodiment of the present invention, the other end of the battery box is fixedly connected to a socket, the terminal seat in the socket is connected to the electrode socket, the terminal seat of the socket is also connected to the circuit of the printed circuit board, and the inner wall interlayer of the battery box is embedded with heat insulation cotton.

[0009] In one embodiment of the present invention, the outer sides of the bottom shell and the sealing shell cover are fixedly connected with fixing protrusions, and two fixing protrusions at opposite positions are fixedly connected by screws. The outer side of the sealing shell cover is also fixedly connected with a plurality of fixing ears.

[0010] In one embodiment of the present invention, sealing silicone rings are provided at the joints between the box body and the sealed control box cover, the joints between the sealed cover and the battery box cover, and the joints between the sealed shell cover, the bottom shell, and the battery box cover.

[0011] In one embodiment of the present invention, the millimeter wave radar, infrared sensor and vibration motor are all connected to the circuit corresponding to the printed circuit board through a conductive fixing mechanism, and the waterproof buzzer and flashing lamp beads are connected to the circuit corresponding to the printed circuit board.

[0012] In one embodiment of the present invention, the conductive fixing mechanism includes a plurality of first bosses fixedly connected to the inner wall of the stud, and the millimeter-wave radar, infrared sensor and vibration motor are each provided with a second boss corresponding to the installation position, and a first copper screw sleeve and a second copper screw sleeve are respectively fixedly embedded in the first boss and the second boss, and the first copper screw sleeve is conductive to the circuit corresponding to the printed circuit board, and the second boss is conductive to the electrodes corresponding to the millimeter-wave radar, infrared sensor and vibration motor, and the first copper screw sleeve is threadedly connected to the second copper screw sleeve via a copper conductive screw.

[0013] In one embodiment of the present invention, a first slot is provided at the bottom of the bottom shell, and a first acrylic plate made of a transparent material facing the position of the millimeter wave radar is sealed and embedded inside the first slot.

[0014] In one embodiment of the present invention, a second groove is formed at a position where the annular cabin is directly opposite to the infrared sensor, and a second acrylic plate made of a transparent material is sealed and embedded in the second groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1) This type of power cable well safety warning device uses millimeter-wave radar for non-contact liquid level monitoring, which can accurately detect water accumulation and overflow in the well, and issue an alarm in time when the limit is exceeded to prevent power equipment from being damaged by water immersion. The device integrates multiple sensors such as inclination and vibration, which can monitor the inclination, displacement and vibration status of the well cover in real time to prevent safety hazards caused by loose or missing well covers. The device is also equipped with infrared sensors and vibration motors, which can effectively detect abnormal intrusions of small animals and personnel, and issue warnings through waterproof buzzers and flashing lamp beads to further ensure the safety of power facilities. The device uses low-power narrowband Internet of Things communication technology and has a built-in high-performance lithium-ion battery, which can achieve reliable wireless communication in a closed environment and ensure that the equipment can work continuously for a long time without an external power supply, greatly reducing maintenance costs; 2) The conductive fixing mechanism of this power cable well safety warning device uses copper conductive screws to achieve reliable conduction between the millimeter wave radar, infrared sensor and vibration motor and the printed circuit board through the design of multiple first and second bosses, which not only simplifies the connection method of internal components and improves the convenience of assembly and maintenance, but also enhances the stability of the equipment in a vibration environment, ensuring the stability and reliability of signal transmission; the joints between the sealed shell cover and the bottom shell and the battery box all use sealed silicone rings, which further enhances the waterproof sealing effect of the equipment, allowing the device to work for a long time in a humid environment or even underwater, greatly improving the reliability of the power cable well in rainy and humid areas. The battery box is designed as a detachable structure and is equipped with a transparent observation window and a silicone sealing button. Users can easily check the battery status through the observation window and quickly replace the battery through the button without complicated disassembly and assembly process. It not only extends the service life of the device, but also reduces the difficulty of maintenance and improves the convenience and efficiency of daily maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic structural diagram of a power cable well safety early warning device provided by an embodiment of the present invention; Figure 2 One of the structural schematic diagrams of a power cable well safety early warning device provided by an embodiment of the present invention; Figure 3 A schematic diagram of the disassembly of a power cable well safety warning device provided by an embodiment of the present invention; Figure 4 One of the disassembly schematic diagrams of a power cable well safety warning device provided in an embodiment of the present invention; Figure 5 A schematic diagram of the internal structure of a bottom shell of a power cable well safety warning device provided by an embodiment of the present invention; Figure 6 A schematic diagram of the bottom shell structure of a power cable well safety warning device provided by an embodiment of the present invention; Figure 7 A schematic diagram of the PCB structure of a power cable well safety warning device provided by an embodiment of the present invention; Figure 8 A schematic structural diagram of a conductive fixing mechanism of a power cable well safety warning device provided in an embodiment of the present invention.

[0018] Icons: 100, bottom shell; 110, partition; 120, radar installation cavity; 130, control box installation cavity; 131, pin seat; 140, battery box; 141, sealing cover; 142, observation window; 143, silicone sealing button; 144, socket; 150, annular cabin; 151, second slot; 152, second acrylic plate; 160, protrusion compartment; 180, printed circuit board; 190, stud; 1110, fixing protrusion; 1120, conductive fixing mechanism; 1121, first protrusion; 1122, second protrusion; 1123, first copper screw sleeve; 1124, second copper screw sleeve; 1125, copper conductive screw; 1130, first slot; 1140, first acrylic plate; 1150, sealing silicone ring; 200, millimeter wave radar; 300, sealed control box; 310, box body; 320, box cover; 330, PCB board; 340, vibration sensor; 350, power management module; 360, low power communication module; 370, tilt sensor; 380, single chip microcomputer; 400, lithium terbium mobile power supply; 410, electrode plug post; 420, sliding bar; 430, sliding groove; 500, infrared sensor; 600, vibration motor; 700, waterproof buzzer; 800, flashing lamp beads; 900, sealed shell cover; 910, fixing ear. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] Example See also Figure 1-8A power cable well safety warning device comprises a bottom shell 100, two millimeter wave radars 200 for monitoring abnormal water accumulation and overflow in the well, a sealed control box 300, a lithium erbium mobile power supply 400, a plurality of infrared sensors 500, a vibration motor 600, a waterproof buzzer 700, a flashing lamp bead 800 and a sealed shell cover 900, wherein the interior of the bottom shell 100 is divided into two radar installation cavities 120 and a control box installation cavity 130 by two partitions 110, a battery box 140 is fixedly connected to the outer side of the bottom shell 100, and an annular cabin 150 fixedly connected to the outer side of the bottom shell 100 is provided on both sides of the bottom shell 100, and the two millimeter wave radars 200 are respectively installed in the two radar installation cavities 120; Specifically, the bottom shell 100 is divided into two radar installation chambers 120 and a control box installation chamber 130 by two internal partitions 110. The three chambers are independently and reasonably arranged, which can effectively protect the corresponding electronic components and ensure long-term stable operation in the harsh environment of the cable well. The battery box 140 can store and place the lithium-ion mobile power supply 400 separately, and can also fix the lithium-ion mobile power supply 400. The sliding bar 420 of the battery box 140 and the sliding groove 430 inside the battery box 140 are slidably connected to each other, ensuring that the installation and removal process of the battery is smooth and convenient, and also convenient for the disassembly and replacement of the battery; the annular cabin 150 can be used for the installation of multiple infrared sensors 500; The two millimeter wave radars 200 are respectively installed in the two radar installation cavities 120. Detect abnormal conditions such as water accumulation and overflow in the well. The non-contact measurement characteristics of the millimeter wave radar 200 enable it to accurately detect the water level without direct contact with the water, ensuring the accuracy of the data and the long life of the device. At the same time, there are two millimeter wave radars 200, one as a spare redundant design. When one is damaged, it can switch to another radar to maintain the continuity of measurement; The sealed control box 300 is composed of a box body 310 and a box cover 320. The box body 310 is fixedly installed in the control box installation cavity 130. A PCB board 330 is installed inside the box body 310. The surface of the PCB board 330 is integrated with a vibration sensor 340, a power management module 350, a low-power communication module 360, an inclination sensor 370 and a single-chip microcomputer 380. Specifically, the sealed control box 300 can be used for storing and installing the PCB board 330. At the same time, the sealed control box 300 adopts a sealed design, which can effectively prevent impurities such as moisture and dust from entering, ensure the stable operation of electronic components, and perform secondary sealing protection on the PCB board 330. The PCB board 330 integrates a vibration sensor 340, a power management module 350, a low-power communication module 360, a tilt sensor 370 and a single-chip microcomputer 380 electronic components. Multiple electronic components are interconnected through the integrated design of the PCB board 330, and can jointly complete the monitoring of the manhole cover status and data processing.

[0027] The lithium-ion mobile power supply 400 is detachably placed in the battery box 140. The positive and negative electrodes of the lithium-ion mobile power supply 400 are fixedly connected with electrode plug-in posts 410. Both sides of the shell of the lithium-ion mobile power supply 400 are fixedly connected with sliding bars 420. The sliding bars 420 are slidably connected with the sliding grooves 430 provided on the inner side of the battery box 140. Specifically, the electrode plug-in column 410 can enable the lithium-bnium mobile power supply 400 to be powered by plugging and unplugging, and the sliding bar 420 is slidably matched with the slide groove 430 of the battery box 140 to ensure that the lithium-bnium mobile power supply 400 can be accurately installed in the battery box 140.

[0028] Among them, a plurality of infrared sensors 500 are respectively installed in two annular cabins 150, a vibration motor 600 is installed in a raised cabin 160 provided in the bottom shell 100, a waterproof buzzer 700 is installed at the bottom of the bottom shell 100, and a plurality of flashing lamp beads 800 are also installed at the bottom of the bottom shell 100; Specifically, the multiple infrared sensors 500 are reasonably distributed in a fan shape, and can be used for sensing and monitoring when small animals or people approach, and feedback is given to the single-chip microcomputer 380. The single-chip microcomputer 380 can control the waterproof buzzer 700 to emit a buzzing sound to drive away small animals or warn illegal personnel. At the same time, the single-chip microcomputer 380 can also control multiple flashing lamp beads 800 to flash, scare off small animals or warn illegal personnel, and further ensure the safety of power facilities. The sealed shell cover 900 is installed on the top of the bottom shell 100 , and when the sealed shell cover 900 , the bottom shell 100 and the battery box 140 are covered, the bottom shell 100 is evacuated and filled with an inert gas.

[0029] Specifically, the bottom shell 100 and the battery box 140 can be sealed separately by setting the sealing shell cover 900. After the bottom shell 100 is sealed, the bottom shell 100 is evacuated and filled with inert gas, which can further protect the internal electronic components and effectively improve the service life of the device.

[0030] In this embodiment, a printed circuit board 180 is embedded in the internal interlayer of the bottom shell 100, and a plurality of studs 190 are also fixedly connected to the interior of the bottom shell 100. A pin seat 131 embedded in the interior of the bottom shell 100 is provided at the inner bottom end of the control box mounting cavity 130. The slot of the pin seat 131 is engaged with the pin of the PCB board 330, and the pin seat 131 is also connected to the corresponding circuit of the printed circuit board 180.

[0031] Specifically, a printed circuit board 180 is embedded in the inner interlayer of the bottom shell 100, so that the electrical connection inside the device is more compact and has good anti-interference performance, and the printed circuit board 180 is fixed to the bottom shell 100 in an integrated manner, which not only improves the structural strength of the device, but also reduces the external force that the circuit board may be subjected to during use, and at the same time avoids the messy wiring affecting the sealing between the individual cavities; At the inner bottom end of the control box mounting cavity 130, a pin seat 131 is embedded in the bottom shell 100, and the pin seat 131 is connected to the pin of the PCB board 330 through its slot, so that the various electronic components integrated in the PCB board 330 can be electrically connected with other electronic components in the device, which not only simplifies the wiring inside the device, but also makes the overall structure more compact.

[0032] In this embodiment: a sealing cover 141 is detachably connected to the box opening at one end of the battery box 140 by screws, a transparent observation window 142 is provided on the surface of the sealing cover 141, and a silicone sealing button 143 is also provided on the surface of the sealing cover 141, the observation window 142 is directly opposite to the display position of the lithium-ion battery mobile power supply 400, and the silicone sealing button 143 is directly opposite to the screen switch button position of the lithium-ion battery mobile power supply 400.

[0033] Specifically, the user can easily operate the screen switch of the lithium-ion mobile power supply 400 by pressing the silicone sealing button 143. The transparent observation window 142 allows the user to directly view the display of the lithium-ion mobile power supply 400 through the observation window 142 without removing the sealing cover 141, so as to understand the operating status of the power supply and prevent water and dust from the external environment from entering the battery box 140.

[0034] In this embodiment, the other end of the battery box 140 is fixedly connected to a socket 144, and the terminal seat in the socket 144 is socketed and connected to the electrode plug column 410. The terminal seat of the socket 144 is also connected to the circuit of the printed circuit board 180, and the inner wall interlayer of the battery box 140 is embedded with heat insulation cotton.

[0035] Specifically, the terminal seat of the socket 144 is connected to the circuit of the printed circuit board 180, so that the battery power can be directly supplied to all electronic components of the device through the socket 144, and the socket connection mode of the socket 144 and the electrode plug column 410 makes it convenient to replace the lithium-ion mobile power supply 400. The user only needs to unplug the lithium-ion mobile power supply 400 from the socket 144 and insert a new lithium-ion mobile power supply 400 without complicated electrical connection operations. The modular design not only improves the maintenance efficiency of the device, but also reduces the risk of equipment failure caused by human operating errors. The heat-insulating cotton embedded in the inner wall interlayer of the battery box 140 enables the lithium-ion mobile power supply 400 to maintain a stable working state in low or high temperature environments, prevents the adverse effects of ambient temperature changes on the performance of the lithium-ion mobile power supply 400, and improves the working stability of the lithium-ion mobile power supply 400.

[0036] In this embodiment, the outer sides of the bottom shell 100 and the sealing shell cover 900 are fixedly connected with fixing protrusions 1110 , and the two opposite fixing protrusions 1110 are fixedly connected by screws. The outer side of the sealing shell cover 900 is also fixedly connected with a plurality of fixing ears 910 .

[0037] Specifically, the fixing protrusion 1110 not only enhances the structural strength of the bottom shell 100 and the sealing shell cover 900, but also connects the two fixing protrusions 1110 by screws, so that the sealing shell cover 900 can be firmly fixed on the bottom shell 100, and the user can quickly open the sealing shell cover 900 when maintenance or replacement of internal components is required. The provision of multiple fixing ears 910 can cooperate with screws to install the sealing shell cover 900 and the manhole cover, so that the device can be quickly fixed.

[0038] In this embodiment, sealing silicone rings 1150 are provided at the joints between the box body 310 and the sealed control box 300 , the joints between the sealing cover 141 and the battery box 140 , and the joints between the sealing shell cover 900 , the bottom shell 100 and the battery box 140 .

[0039] Specifically, the provided sealing silicone ring 1150 can seal the component cover to form a reliable sealing barrier, which can effectively prevent impurities such as moisture and dust from entering the interior of the device and protect the normal operation of the internal electronic components. At the same time, the application of the sealing silicone ring 1150 also makes the installation and maintenance process of the device more convenient. When users perform maintenance or replace components, they can easily disassemble and reinstall them without affecting the sealing of the equipment. This fully considers the maintenance needs of the equipment during long-term use and ensures that the equipment always maintains good performance throughout its service life.

[0040] In this embodiment: the millimeter wave radar 200, the infrared sensor 500 and the vibration motor 600 are all connected to the corresponding circuits of the printed circuit board 180 through the conductive fixing mechanism 1120, and the waterproof buzzer 700 and the flashing lamp bead 800 are connected to the corresponding circuits of the printed circuit board 180.

[0041] Specifically, the conductive fixing mechanism 1120 is provided to conduct electricity between the printed circuit board 180 and the millimeter-wave radar 200, the infrared sensor 500 and the vibration motor 600. The conductive fixing mechanism 1120 not only achieves mechanically firm fixation of the millimeter-wave radar 200, the infrared sensor 500 and the vibration motor 600, but also ensures the reliability of the electrical connection.

[0042] In this embodiment, the conductive fixing mechanism 1120 includes a plurality of first bosses 1121 fixedly connected to the inner wall of the stud 190, and the millimeter wave radar 200, the infrared sensor 500 and the vibration motor 600 are all provided with second bosses 1122 corresponding to the installation position, and the first bosses 1121 and the second bosses 1122 are respectively fixedly embedded with first copper screw sleeves 1123 and second copper screw sleeves 1124, the first copper screw sleeve 1123 is conductive with the circuit corresponding to the printed circuit board 180, the second boss 1122 is conductive with the electrodes corresponding to the millimeter wave radar 200, the infrared sensor 500 and the vibration motor 600, and the first copper screw sleeve 1123 is threadedly connected to the second copper screw sleeve 1124 through a copper conductive screw 1125.

[0043] Specifically, the millimeter wave radar 200, the infrared sensor 500 and the vibration motor 600 are respectively connected to the first boss 1121 of the stud 190 through their corresponding second boss 1122. The use of the copper screw sleeve and the copper conductive screw 1125 ensures the stability and accuracy of signal transmission, simplifies the internal wiring structure of the device, and makes the device assembly process more efficient. It can also be easily disassembled and reinstalled during maintenance. Especially in the application scenario of the cable well, the equipment often needs to face severe vibration and environmental changes. The conductive fixing mechanism 1120 can effectively cope with these challenges and ensure the long-term reliable operation of the device.

[0044] In this embodiment, a first groove 1130 is provided at the bottom of the bottom shell 100, and a first acrylic plate 1140 made of transparent material and facing the millimeter wave radar 200 is sealed and embedded inside the first groove 1130. A second groove 151 is provided at a position opposite to the infrared sensor 500 in the annular cabin 150, and a second acrylic plate 152 made of transparent material is sealed and embedded inside the second groove 151.

[0045] Specifically, the first acrylic plate 1140 is provided based on its good permeability and mechanical strength, and the millimeter wave radar 200 relies on the emission and reception of electromagnetic waves. The transparent acrylic plate can effectively conduct radar waves without affecting the measurement accuracy. At the same time, the acrylic material has a high impact resistance, and can protect the radar sensor from damage under the opening and closing of the manhole cover or other external forces; and the second acrylic plate 152 can seal the second slot 151 and ensure the normal operation of the infrared sensor 500; and the first acrylic plate 1140 and the second acrylic plate 152 respectively seal the first slot 1130 and the second slot 151, which can also effectively ensure the sealing inside the bottom shell 100.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power cable well safety warning device, characterized in that: include: A bottom shell (100), the interior of the bottom shell (100) being divided into two radar installation chambers (120) and a control box installation chamber (130) by two partitions (110), a battery box (140) being fixedly connected to the outside of the bottom shell (100), and an annular cabin (150) being fixedly connected to the outside of the bottom shell (100) being provided on both sides of the bottom shell (100); Two millimeter wave radars (200) for monitoring abnormal water accumulation and well water overflow in a well, wherein the two millimeter wave radars (200) are respectively installed in two radar installation cavities (120); A sealed control box (300), the sealed control box (300) comprising a box body (310) and a box cover (320), the box body (310) being fixedly mounted in a control box mounting cavity (130), a PCB board (330) being mounted inside the box body (310), and a vibration sensor (340), a power management module (350), a low-power communication module (360), an inclination sensor (370) and a single-chip microcomputer (380) being integrated on a surface of the PCB board (330); A lithium-thiophene mobile power supply (400), the lithium-thiophene mobile power supply (400) being detachably placed in a battery box (140), the positive and negative electrodes of the lithium-thiophene mobile power supply (400) being fixedly connected to electrode plug posts (410), the outer shell of the lithium-thiophene mobile power supply (400) being fixedly connected to sliding bars (420), the sliding bars (420) being slidably connected to sliding grooves (430) provided on the inner side of the battery box (140); A plurality of infrared sensors (500), wherein the plurality of infrared sensors (500) are respectively installed in two annular cabins (150); A vibration motor (600), the vibration motor (600) being installed in a protruding compartment (160) provided on the bottom shell (100); A waterproof buzzer (700), the waterproof buzzer (700) being mounted on the bottom of the bottom shell (100), and a plurality of flashing light beads (800) being further mounted on the bottom of the bottom shell (100); A sealed shell cover (900) is installed on the top of the bottom shell (100), and when the sealed shell cover (900) is covered with the bottom shell (100) and the battery box (140), the bottom shell (100) is evacuated and filled with an inert gas.

2. A power cable well safety warning device according to claim 1, characterized in that: A printed circuit board (180) is embedded in the inner interlayer of the bottom shell (100), a plurality of studs (190) are also fixedly connected to the inside of the bottom shell (100), a pin seat (131) embedded in the inside of the bottom shell (100) is provided at the inner bottom end of the control box installation cavity (130), a slot of the pin seat (131) is sleeved with a pin of the PCB board (330), and the pin seat (131) is also conductively connected to a circuit corresponding to the printed circuit board (180).

3. A power cable well safety warning device according to claim 1, characterized in that: A sealing cover (141) is detachably connected to a box opening at one end of the battery box (140) by means of screws; a transparent observation window (142) is provided on the surface of the sealing cover (141); a silicone sealing button (143) is also provided on the surface of the sealing cover (141); the observation window (142) is directly opposite to the display position of the lithium-bnium mobile power supply (400); and the silicone sealing button (143) is directly opposite to the screen switch button position of the lithium-bnium mobile power supply (400).

4. A power cable well safety warning device according to claim 3, characterized in that: The other end of the battery box (140) is fixedly connected to a socket (144); a terminal seat in the socket (144) is sleeved and connected to an electrode socket post (410); the terminal seat of the socket (144) is also connected to a circuit of a printed circuit board (180); and a heat-insulating cotton is embedded in the inner wall interlayer of the battery box (140).

5. The power cable well safety warning device according to claim 1, characterized in that: The outer sides of the bottom shell (100) and the sealing shell cover (900) are both fixedly connected with fixing protrusions (1110), and two fixing protrusions (1110) located opposite to each other are fixedly connected by screws. The outer side of the sealing shell cover (900) is also fixedly connected with a plurality of fixing ears (910).

6. A power cable well safety warning device according to claim 4, characterized in that: Sealing silicone rings (1150) are provided at the joints between the box body (310) and the sealed control box (300), the joints between the sealing cover (141) and the battery box (140), and the joints between the sealing shell cover (900), the bottom shell (100) and the battery box (140).

7. The power cable well safety warning device according to claim 1, characterized in that: The millimeter wave radar (200), infrared sensor (500) and vibration motor (600) are all connected to the circuit corresponding to the printed circuit board (180) through the conductive fixing mechanism (1120), and the waterproof buzzer (700) and flashing lamp bead (800) are connected to the circuit corresponding to the printed circuit board (180).

8. A power cable well safety warning device according to claim 7, characterized in that: The conductive fixing mechanism (1120) comprises a plurality of first bosses (1121) fixedly connected to the inner wall of the stud (190); the millimeter wave radar (200), the infrared sensor (500) and the vibration motor (600) are each provided with a second boss (1122) corresponding to the installation position; a first copper screw sleeve (1123) and a second copper screw sleeve (1124) are respectively fixedly embedded in the first boss (1121) and the second boss (1122); the first copper screw sleeve (1123) is electrically connected to a circuit corresponding to the printed circuit board (180); the second boss (1122) is electrically connected to electrodes corresponding to the millimeter wave radar (200), the infrared sensor (500) and the vibration motor (600); and the first copper screw sleeve (1123) is threadedly connected to the second copper screw sleeve (1124) via a copper conductive screw (1125).

9. The power cable well safety warning device according to claim 1, characterized in that: A first slot (1130) is provided at the bottom of the bottom shell (100), and a first acrylic plate (1140) made of a transparent material and facing the millimeter wave radar (200) is sealed and embedded inside the first slot (1130).

10. The power cable well safety warning device according to claim 1, characterized in that: A second slot (151) is provided at a position directly opposite the annular cabin (150) and the infrared sensor (500), and a second acrylic plate (152) made of a transparent material is sealed and embedded in the interior of the second slot (151).

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