JP3243565U - Intelligent lower shield sensor device based on wireless transmission - Google Patents

Abstract

The present invention provides an intelligent lower shield sensor device based on wireless transmission that realizes long-distance signal transmission and synchronous collection functions, has a simple structure, and can be used for a long time. An intelligent lower shield sensor device based on wireless transmission includes a protective housing 10 and an upper cover 20 connected to the upper end of the protective housing, and has a high magnetic permeability film on the outside of the protective housing and the upper cover. , an energy self-acquisition and storage power module, a signal transmission unit, a main control board, a lower shield conductor and an antenna are disposed inside the protective housing, and an output end of the energy self-acquisition and storage power module is connected to the main control board. , the output end of the signal transmission unit is connected to a main control board, the main control board is connected to an antenna, the protective housing includes an interface post 101 and a storage post 102, and a signal collection coil and an energy storage post are installed inside the storage post. A take-out coil is placed. [Selection diagram] Figure 1

Description

TECHNICAL FIELD The present invention relates to the field of substation monitoring technology, and more particularly to an intelligent bottom shield sensor device based on wireless transmission.

110kV class and above main transformer output line method mainly adopts capacitor bushing, bushing lower shield is an important signal pick-up position to detect parameters such as dielectric loss.

With the steady progress of power grid construction, the demand for transparency of ultra-high voltage electrical equipment in China's Xinjiang power grid is increasing, and the use of online monitoring equipment for electrical equipment with low power consumption, miniaturization and wireless IoT function. are becoming more and more common.

The wire transmission type current conversion sensor used in the oil-impregnated paper insulation bushing has a large number of interfaces, low safety reliability, and the bushing lower shield cannot be opened when the main transformer is running. In order to pick up the dielectric loss signal during operation, the conventional method was to pull the ground wire of the lower shield to the bottom, but changing the grounding method to some extent in this way poses a certain risk to safe driving. Configure.

The prior art uses the bottom shield sensor to monitor and measure the bushing and extract the ground current signal to the bushing bottom shield without changing the electrical characteristics of the traditional bushing bottom shield, whereas the traditional bottom shield sensor is wired. It uses transmission, has a complicated installation structure, has low safety and reliability, requires external power supply and charging, and is very inconvenient to install and maintain. Decrease work efficiency.

The present invention provides an intelligent bottom shield sensor device based on wireless transmission to meet the shortcomings existing in the above prior art, which has higher reliability. small, long operating time, high reliability and good stability.

The technical means adopted by the present invention to solve the above technical problems are as follows:
is an intelligent lower shield sensor device based on wireless transmission,
comprising a protective housing and a top cover, wherein the protective housing and the top cover form a sealed environment, having a high magnetic permeability film on the outside of the protective housing and the top cover;
a threaded hole is arranged on the outside of the protection housing so that it can be connected to the fixing plate part through a screw;
an energy self-harvesting and storage power supply module, a signal transmission unit, a main control board, a lower shield conductor and an antenna are disposed inside the protective housing, the output end of the energy self-harvesting and storage power module is connected to the main control board; the output end of the signal transmission unit is connected to a main control panel, the main control panel is connected to an antenna;
The protective housing includes an interface post and a memory post, said interface post and memory post being of internal hollow structure, wherein the plug is disposed inside the interface post, the lock nut is disposed outside the interface post, and the memory A signal acquisition coil and an energy extraction coil are arranged inside the post, a partition plate is arranged in the opening of the storage post, the partition plate is fixed to a mounting groove on the housing via a bolt, and the partition plate has A through hole is arranged,
A plurality of supporting columns are further arranged in the protective housing in parallel with the axis in the protective housing, a main control panel is arranged on the upper end of the supporting columns, and an antenna is connected to the upper end of the main control panel through the columns. ,
An energy self-harvesting and storage power supply module is arranged outside the plug, the rear end of the plug is connected to a lower shield conductor, the lower shield conductor is arranged in a storage post, and a main control board through a conductor. and the signal acquisition coil is wrapped around the bottom shield conductor.

Preferably, the main control panel includes a program-controlled gain module, a program-controlled amplification adjustment module, an AD conversion module, a memory module and a microcontroller, and the output end of the power frequency signal acquisition coil is connected to the program-controlled gain module. , the output end of the program-controlled amplification adjustment module is connected to a microcontroller, the output end of the power frequency signal acquisition coil is connected to a program-controlled amplification adjustment module, the output end of the program-controlled amplification adjustment module is connected to AD It is connected to a conversion module, the output end of said AD conversion module is connected to a microcontroller, and said microcontroller is connected to a memory module.

Preferably, the main control board includes a program-controlled gain module, a program-controlled amplification adjustment module, an AD conversion module, a memory module and a microcontroller, and the signal transfer conversion unit is 1-2 signal acquisition coils, redundant The signal collection coil is power frequency induction coil, passband 0.1kHz-500kHz pulse current induction coil, passband 0.1kHz-500kHz pulse current coupling capacitor, passband 0. .1MHz-50MHz high frequency induction coil, passband 30MHz-300MHz ultra-high frequency induction coil, passband 0.1GHz-3.5GHz ultra-high frequency induction coil, the output end of said signal acquisition coil is connected to a program control gain module, said program A control gain module is connected to a microcontroller, an output end of the power frequency signal acquisition coil is connected to a program-controlled amplification adjustment module, an output end of the program-controlled amplification adjustment module is connected to an AD conversion module, and the An output end of the AD conversion module is connected to a microcontroller, and said microcontroller is connected to a memory module.

Preferably, the energy self-harvesting and storage power supply module includes an energy extraction coil, a power control panel and an energy storage battery, the energy extraction coil is located outside the plug, and the energy storage battery is connected to the main control The power control panel is located below the panel, and includes a lightning protection module, a shaping filter module, a voltage detection module, and a voltage stabilization module. The output end of the energy extraction coil is connected to the lightning protection module. A shaping filter module is connected to the output end of the module, an energy storage battery is connected to the output end of the shaping filter module, a voltage stabilization module is connected to the output end of the energy storage battery, and the lightning protection module A voltage detection module is connected to the output end, and the voltage detection module is connected to the main control panel.

Preferably, the magnetic core of said energy extraction coil is made of permalloy or amorphous material with high magnetic permeability.

Preferably, said energy storage battery comprises a super battery and a battery, wherein said battery is used for power storage and said super battery is used for short-term continuous diversion of high current.

Preferably, said plug includes a receptacle, a first fixture, a spring, a soft wire with an insulating skin and a second fixture, said receptacle being connected to one end of the spring through the first fixture. and the other end of the spring is connected to a second fixture, one end of the insulated skinned soft wire is connected to the first fixture, the other end is connected to the second fixture, and the spring and an electrical intake coil is positioned outside the second fixture, the second fixture being connected to the lower shield conductor.

Preferably, a mounting groove is disposed at one end where the protective housing and the upper cover are connected, a male thread is disposed in the mounting groove, a female thread is disposed in the upper cover, and a seal ring is disposed in the mounting groove. ing.

Preferably, the top cover is made of transparent plastic material and said protective housing is made of metal material.

Preferably, said microcontroller is an STM32L431 type processor.

Preferably, the antenna type is SX1268, either a Lora wireless module with a transmission frequency of 470-510MHz, or a 4G, 5G module.

Compared with the prior art, the present invention has the following advantages: the intelligent bottom shield sensor device based on wireless transmission provided by the present invention can realize long-distance signal transmission by arranging the LORA antenna. , by deploying a passive sensitive power supply module, there is no need to add an external battery or supply power from the outside, it can self-detect electricity and provide operating power to the main control panel, The structure is simple, the volume is small, and it can be used for a long time.

The drawings are included to provide a further understanding of the invention, and together with embodiments of the invention form part of the specification for the purpose of describing the invention, and constitute limitations of the invention. not something to do. In the drawing
1 is a structural diagram of the intelligent lower shield sensor device based on wireless transmission of the present invention; FIG. 1 is an exploded view of the intelligent lower shield sensor device based on wireless transmission of the present invention; FIG. 1 is a cross-sectional view of the intelligent lower shield sensor device based on wireless transmission of the present invention; FIG. FIG. 4 is a control circuit diagram of the main control panel of the intelligent lower shield sensor device based on wireless transmission of the present invention; 1 is a circuit diagram of a passive sensitive power supply module of the present invention; FIG.

Hereinafter, the present utility model will be described in detail based on each embodiment shown in the drawings. Or structural equivalent transformations or alternatives are all within the protection scope of the present invention.

In the description of the present invention, the orientations or positional relationships indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are the orientations or positional relationships indicated based on the drawings, and are simply the description of the present invention. and is intended to simplify the description rather than to indicate or imply that the indicated device or element must be configured and operated in a particular orientation, or in a particular orientation. Therefore, it cannot be understood as a limitation of the present invention.

In the description of the present invention, the terms "setup", "mounting", "connection" and "connection" should be understood broadly, unless otherwise clearly defined and limited, e.g. may be a detachable connection, may be integrally connected, may be mechanically connected, may be electrically connected, may be directly connected, or may be connected through an intermediate medium. It may be indirectly connected via a connection, or it may be an internal connection between the two elements. A person skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.

As shown in FIGS. 1-3, the intelligent lower shield sensor device based on wireless transmission provided by the present invention includes:
It comprises a protective housing 10 and an upper cover 20 connected to the upper end of the protective housing 10 , the protective housing 10 and the upper cover 20 connected to the upper end of the protective housing 10 form a sealed environment, and the protective housing 10 and Having a high magnetic permeability film on the outside of the upper cover 20,
A threaded hole is arranged on the outside of the protective housing 10 so that it can be connected to the fixing plate through the screw,
The protective housing 10 includes an energy self-harvesting and storage power module 30, a signal transmission unit 50, a main control panel 40, and an antenna 70. , the signal transmission unit 50 is one or two signal collection coils to achieve redundancy collection and signal self-check, the output end is connected to the main control panel 40, the main control panel 40 is connected to the antenna 70,
The protective housing 10 includes an interface post 101 and a storage post 102, the interface post 101 and the storage post 102 are internal hollow structures, wherein a plug is placed inside the interface post 101 and the interface post 101 A lock nut 103 is arranged on the outside, a signal transmission unit 50 and an energy extraction coil are arranged inside the storage post 102, a partition plate 121 is arranged in the opening of the storage post 102, and the partition plate 121 receives a bolt. through the mounting groove 104 on the protective housing 10, the partition plate 121 is provided with a through hole,
The protection housing 10 further includes a plurality of support columns 105 parallel to the axis in the protection housing 10 . A main control panel 40 is provided on the upper end of the support columns 105 . Antenna 70 is connected via
The energy self-harvesting and storage power supply module 30 is arranged outside the plug 80, the rear end of the plug 80 is connected to the lower shield conductor 60, the lower shield conductor 60 is arranged in the storage post 102 and the lead wire , and the signal transmission unit 50 is mounted on the outside of the lower shield conductor 60 .

The intelligent bottom shield sensor device based on wireless transmission provided by the present invention can achieve long-distance signal transmission by configuring the LORA antenna, and adding an external battery by configuring the passive sensitive power supply module. There is no need to supply power from the outside, it can sense electricity by itself and provide operating power to the main control panel. It has a simple structure, small volume, and can be used for a long time. can. The lower shield sensor device is in an energy extraction state during sleep periods and an energization state during wakeup periods.

Further, the main control panel 40 includes a program control gain module 402, a program control amplification adjustment module 403, an AD conversion module 404, a memory module 405 and a microcontroller 406,
Said signal transmission unit 50 is 1-2 signal acquisition coils to achieve redundant acquisition and signal self-test, said signal acquisition coils are power frequency induction coils, passband 0.1kHz-500kHz pulse current induction Including coil, passband 0.1kHz-500kHz pulse current coupling capacitor, passband 0.1MHz-50MHz high frequency induction coil, passband 30MHz-300MHz ultra-high frequency induction coil, passband 0.1GHz-3.5GHz ultra-high frequency induction coil , the passband of the above induction coil can be selected and used according to needs, or other passband coils can be adopted, specifically according to the actual use design. The output end of the signal transmission unit 50 is connected to a program-controlled gain module 402, the program-controlled gain module 403 is connected to a microcontroller 406, and the output end of the signal transmission unit 50 is connected to a program-controlled amplification adjustment module 403. , the output end of the program control amplification adjustment module 403 is connected to the AD conversion module 404, the output end of the AD conversion module 404 is connected to the microcontroller 406, the microcontroller 406 is connected to the memory module 405 Connected.

The main control panel performs high-speed HFCT signal sampling with an external 100M ADC and exchanges data with an external large-capacity SDRAM. The power frequency signal is sampled by a 14-bit ADC with an internal microcontroller.

In the embodiment of the present invention, if a high-resolution ADC is directly used for the analog-to-digital converter, it is preferable to select a 16-bit ADC so as to leave a sufficient margin. When adopting a 12-bit ADC plus gain control method, an ADC with a built-in microcontroller may be adopted. A 12-bit ADC plus gain control scheme is used for greater hardware and software flexibility. The microcontroller can adopt, but is not limited to, ST's low power series STM32L431 processor, which can include a 12-bit ADC and add an external four-stage switching circuit. As shown in FIG. 4, the basic principle of the conditioning section consists of a shift-bit-switching exaggerated induction amplifier circuit composed of a multiplexer switch and a carrier, and a secondary active filter circuit.

The microcontroller 406 is an STM32L431 type processor that performs waveform sampling using a built-in ADC and wirelessly transmits at Lora 470 MHz. The grounding post of the lower shield contacts the joint of the sensor, and the contact surface adopts an arc surface, which provides constant pressure through the spring and ensures the reliability of grounding.

Since the ground wire of the lower shield normally has a ground current of about several hundred mA, it is more appropriate if the ground current can be used to obtain the induced electricity. Therefore, in the embodiment of the present invention, electricity is taken in consideration of ground current induction. Inductive power intake is performed by installing a power intake coil on the outside of the connection plug.

Please refer to FIG. 5, in an embodiment of the present invention, the energy self-harvesting and storage power supply module 30 includes an energy extraction coil 301, a power control board 302 and an energy storage battery 303, wherein the energy extraction coil 301 is: Disposed outside the plug 80, the energy storage battery 303 is disposed below the main control panel 40, and the power control panel 302 includes a lightning countermeasure module 321, a shaping filter module 322, a voltage detection module 323, and a voltage stabilization module. 324, the output end of the energy extraction coil 301 is connected to the lightning countermeasure module 321, the output end of the lightning countermeasure module 321 is connected to the shaping filter module 322, the output end of the shaping filter module 322 is: An energy storage battery 303 is connected, a voltage stabilization module 324 is connected to the output end of the energy storage battery 303, a voltage detection module 323 is connected to the output end of the lightning protection module 321, and the voltage detection module 323 is , are connected to the main control panel 40 .

The performance of the measuring transformer directly affects the measurement accuracy. The higher the magnetic permeability of the core material, the smaller the measurement error of the transformer, the higher the accuracy, and the smaller the size of the core. At present, the soft magnetic materials used in current transformer magnetic cores are mainly cold-rolled silicon steel billet, permalloy, amorphous, and microcrystalline. Microcrystalline, amorphous and permalloy have higher magnetic permeability than cold-rolled silicon steel billet, and the magnetic core of silicon steel billet is relatively large in volume. Considering that the material is selected among permalloy, amorphous and microcrystalline, the appropriate magnetic core can be designed or selected according to the circumstances of the manufacturing process. Since the pull-down current is usually on the order of several hundred mA, the magnetic core of the energy pick-up coil 301 is made of permalloy or amorphous material with high magnetic permeability. If the power of the energy extraction coil is 2mW, when testing the ground current of 0.02A, the energy extraction coil of 1000 turns can output an average current of about 50uA, and the long-term operation demand of the transmission interval of 1 hour can satisfy

As the wire diameter of the secondary winding increases, the impedance decreases, so the error decreases. At the same time, the error is inversely proportional to the square of the number of turns of the secondary winding, and the error can be reduced by increasing the number of turns of the secondary winding, and the winding impedance increases accordingly, limiting the reduction of the error. be able to. Generally, the coil of a small current transformer is 1000-2000 turns, and the accuracy can basically reach 0.2 steps. The embodiment of the present invention adopts a 1000-turn current transformer.

In order to avoid instantaneous large current impact on the ground wire, the output of the energy extraction coil first passes through the lightning protection device to discharge large current to prevent lightning damage, and then enters the overvoltage protection circuit to prevent excessive ground wire current. to prevent overvoltage damage to subsequent circuits due to Full-wave rectification rectifies alternating current to direct current to charge a supercapacitor or rechargeable battery.

The energy storage battery 303 in the embodiment of the present invention includes a super battery and a battery, the battery is used for power storage, and the super battery is used for short-term continuous diversion of large current. Due to the large power consumption of the collection module running, it is usually in a dormant state, and when in a dormant state, the electric coil is taken to supplement the energy storage module, and after the microcontroller exits the dormant state, the supercapacitor Powered by Powered by an energy storage module every time you drive. The energy storage module includes a super-battery for power storage and a super-capacitor for short-term continuous drain of large current. Supercapacitor SPC1520 type capacitor.

In an embodiment of the present invention, the plug 80 includes a receptacle 801, a first fastener 802, a spring 803, a soft wire with an insulating skin, and a second fastener 804, wherein the receptacle 801 is connected to a second fastener. One end of the spring 803 is connected to the second fixture 804, the other end of the insulating skinned soft wire is connected to the first fixture, and the other end is connected to the second fixture 804. The end is connected to a second fixture and covered with a spring, the electrical intake coil 301 is placed outside said second fixture 804 , said second fixture 804 is connected to the lower shield conductor 90 .

Here, a mounting groove 106 is arranged at one end where the protective housing 10 and the upper cover 20 are connected, a male screw is arranged in the mounting groove 106 , a female screw is arranged in the upper cover 20 , and the mounting groove 106 A seal ring 107 is arranged in the . The upper cover 20 is made of transparent plastic material, and the protective housing 10 is made of metal material. Due to the presence of the antenna, the entire sensor consists of a metal part at the leading end and a plastic part at the trailing end, with a sealing ring between them for waterproofing.

In an embodiment of the present invention, the antenna 70 used a Lora radio module with model number SX1268 and a transmission frequency of 470-510 MHz. The antenna can also adopt 4G, 5G modules, the present invention is not limited thereto, and the standard is to realize wireless transmission. Preferably, the antenna module uses SX1268 to realize telecommunication transmission. It can also be used for wireless data transmission and wireless synchronization functions. Selecting the Lora communication module is also a communication module based on SX1278. In construction practice, different modulation parameters will affect the receiving distance and sensitivity parameters, and different site installation environments will limit the use of modulation parameters, so flexible and variable placement selection should be considered when designing, and different sites Adapt to the environment.

In an embodiment of the present invention, the lower shield sensor device is composed of a coil section and a collection processing section, and the coil section contains a power frequency and an electrical pick-up coil. The main control panel collection realizes power frequency coordination, collection, processing and wireless transmission. Periodic trigger timing length sampling of power frequency, working period separately. The main control panel operates at a set cycle, operates every time, and after receiving a wireless synchronization command, first performs power frequency signal collection processing. The power frequency signal has a sampling bit number of 14 bits, a sampling rate of 6.4 K, a memory depth of 4096, and a maximum continuous sampling time of 640 ms.

In the embodiment of the present invention, when the lower shield sensor device is connected to the bushing lower shield, a bracket can be installed to fix and support the lower shield sensor device, and the bracket adopts a support frame with an annular ring. can also adopt a support post with an arc groove, the lower shield sensor device can be fixed through the ring or arc groove, can be supported and fixed through the support frame or the support post, and the installation and It is convenient to use, the present invention can adopt other configurations for supporting and fixing the lower shield sensor device, and the present invention does not limit the fixing structure of the lower shield sensor device, The criterion is to be able to realize a robust field mounting of the shielded sensor device.

Finally, although the above is only a preferred embodiment of the present invention and is not used to limit the present invention, the present invention has been described in detail with reference to the above-described embodiments. The technical aspects described in each of the above-described embodiments can be modified, or part of the technical features can be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the scope of the technical principles of the present invention shall fall within the protection scope of the present invention.

10, protective housing; 20, top cover; 30, energy self-harvesting and storage power supply module; 40, main control board; 50, signal transmission unit; 102, memory post; 103, lock nut; 104, mounting groove; 105, support column; 106, mounting groove; 107, seal ring; 321, lightning protection module; 322, shaping filter module; 323, power detection module; 324, voltage stabilization module; 401, strut; 402, program control gain module; , AD conversion module; 405, memory module; 406, microcontroller; 801, socket; 802, first fixture; 803, spring;

Claims (10)

comprising a protective housing and an upper cover connected to the upper end of the protective housing, wherein the protective housing and the upper cover form a closed environment, having a high magnetic permeability film on the outside of the protective housing and the upper cover, the protective housing a screw hole is arranged on the outside of the protective housing, an energy self-harvesting and storage power supply module, a signal transmission unit, a main control panel, a lower shield conductor and an antenna are arranged inside the protective housing, and an output of the energy self-harvesting and storage power module an end is connected to a main control board, the output end of the signal transmission unit is connected to the main control board, the main control board is connected to an antenna;
The protective housing includes an interface post and a memory post, said interface post and memory post being of internal hollow structure, wherein the plug is disposed inside the interface post, the lock nut is disposed outside the interface post, and the memory A signal acquisition coil and an energy extraction coil are arranged inside the post, a partition plate is arranged in the opening of the storage post, the partition plate is fixed to a mounting groove on the housing via a bolt, and the partition plate has A through hole is arranged,
A plurality of supporting columns are further arranged in the protective housing in parallel with the axis in the protective housing, a main control panel is arranged on the upper end of the supporting columns, and an antenna is connected to the upper end of the main control panel through the columns. ,
An energy self-harvesting and storage power supply module is arranged outside the plug, the rear end of the plug is connected to a lower shield conductor, the lower shield conductor is arranged in a storage post, and a main control board through a conductor. , wherein the signal collecting coil is wrapped around the outside of the bottom shield conductor. The main control board includes a program-controlled gain module, a program-controlled amplification adjustment module, an AD conversion module, a memory module and a microcontroller, and the signal transmission conversion unit is 1-2 signal collection coils for redundancy collection. and signal self-test, the signal acquisition coil is a power frequency induction coil, a passband 0.1kHz-500kHz pulse current induction coil, a passband 0.1kHz-500kHz pulse current coupling capacitor, a passband 0.1MHz- 50MHz high-frequency induction coil, passband 30MHz-300MHz ultra-high frequency induction coil, passband 0.1GHz-3.5GHz ultra-high frequency induction coil, the output end of the signal acquisition coil is connected to the program control gain module, the program control gain module is connected to a microcontroller, the output end of the power frequency signal acquisition coil is connected to a program-controlled amplification adjustment module, the output end of the program-controlled amplification adjustment module is connected to an AD conversion module, the AD conversion module The intelligent lower shield sensor device based on wireless transmission as claimed in claim 1, wherein the output end of is connected to a microcontroller, and said microcontroller is connected to a memory module. The energy self-harvesting and storage power supply module includes an energy extraction coil, a power control panel and an energy storage battery, wherein the energy extraction coil is arranged outside the plug and the energy storage battery is below the main control panel. wherein the power control board includes a lightning countermeasure module, a shaping filter module, a voltage detection module and a voltage stabilization module, the output end of the energy extraction coil is connected to the lightning countermeasure module, and the output of the lightning countermeasure module is A shaping filter module is connected to the output end of the shaping filter module, an energy storage battery is connected to the output end of the shaping filter module, a voltage stabilization module is connected to the output end of the energy storage battery, and an output end of the lightning countermeasure module is , a voltage detection module is connected, and the voltage detection module is connected to the main control board. 3. The intelligent lower shield sensor device based on wireless transmission as claimed in claim 2, wherein the magnetic core of said energy extraction coil is made of permalloy or amorphous material with high magnetic permeability. 4. The energy storage battery includes a super battery and a battery, wherein the battery is used for power storage and the super battery is used for short-term continuous diversion of large current. An intelligent lower shield sensor device based on wireless transmission according to claim 3. The plug includes a receptacle, a first fixture, a spring, a soft wire with an insulating skin, and a second fixture, the receptacle being connected to one end of the spring via the first fixture. , the other end of the spring is connected to a second fixture, one end of the insulated skinned soft wire is connected to the first fixture, the other end is connected to the second fixture and covered by the spring. 2. The intelligent bottom shield sensor device based on wireless transmission as claimed in claim 1, wherein an electric intake coil is arranged outside said second fixture, and said second fixture is connected to the bottom shield conductor. A mounting groove is disposed at one end where the protective housing and the upper cover are connected, a male thread is disposed in the mounting groove, a female thread is disposed in the upper cover, and a seal ring is disposed in the mounting groove. The intelligent lower shield sensor device based on wireless transmission as claimed in claim 1 . The intelligent bottom shield sensor device based on wireless transmission as claimed in claim 1, wherein the upper cover is made of transparent plastic material, and said protective housing is made of metal material. 2. The intelligent lower shield sensor device based on wireless transmission according to claim 1, wherein said microcontroller is an STM32L431 type processor. The intelligent bottom shield sensor based on wireless transmission as claimed in claim 1, characterized in that the antenna type is SX1268 and is either Lora wireless module with transmission frequency 470-510 MHz, or 4G, 5G module. Device.