Intelligent risk perception early warning system based on IoT technology

Abstract

The invention relates to an intelligent risk perception early warning system based on an IoT technology, which is applied to the technical field related to the Internet, and can firstly position a target electrical cabinet and perform path planning when a worker needs to enter a machine room for operation, thereby guiding the worker to directly arrive at the target electrical cabinet for operation. The whole-process monitoring can be carried out when a worker enters the machine room, early warning can be carried out in time when the worker is abnormal, the operation of the worker can be corrected in time, and compared with the prior art, the situation that misoperation is carried out on a non-target electrical cabinet is effectively prevented, and then potential safety hazards can be effectively reduced; and meanwhile, in cooperation with the arrangement of the personnel monitoring unit, the operation process can be monitored and graded, so that working personnel who are not skilled in operation can be screened out, the working personnel can carry out corresponding learning improvement subsequently, and potential safety risks caused by skill factors of the working personnel are effectively avoided.

Description

Technical Field

[0001] The present invention relates to an intelligent risk perception and early warning system based on IoT technology, and in particular to an intelligent risk perception and early warning system based on IoT technology applied to the field of Internet-related technologies. Background Art

[0002] As a production equipment-intensive enterprise, power generation enterprises have complex production sites, and dangers may occur if they are not careful. Safety management is very important. Strengthening production safety supervision and management and protecting the safety of employees in accordance with the law are important management indicators for every power generation enterprise. In the daily production management of power plants, the safety management of on-site operations is an important part of the safety management of power plants. Doing a good job in on-site safety management can basically solve most of the safety hazards.

[0003] A large number of electrical cabinets are integrated in the electrical room of a power plant. When working in the room with a large number of electrical cabinets, on the one hand, it is very easy to misoperate other electrical cabinets due to too many electrical cabinets. On the other hand, the stay time in the electrical cabinet integrated room is prolonged due to misoperation, which poses certain safety hazards. In order to reduce this hazard, the prior art generally performs monitoring and early warning of misoperation, such as a monitoring and early warning system for electrical operation of a power plant disclosed in the specification of Chinese patent CN119068625A, and a multi-point positioning method power supply cut-off alarm system disclosed in the specification of Chinese patent CN114743352A.

[0004] However, the above patent only provides an early warning after walking into the wrong compartment, and cannot directly guide the staff. It is still easy for someone to walk into the wrong compartment or stay there for a long time. Moreover, since the early warning is given after walking into the wrong compartment, there is still a certain probability of misoperation, and there are still certain safety hazards. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that there are too many integrated electrical cabinets in the machine room, which may easily cause misoperation. However, the prior art generally warns after a wrong operation, which still has certain safety hazards.

[0006] To solve the above problems, the present invention provides an intelligent risk perception and early warning system based on IoT technology, which includes an anti-misoperation host, an identity recognizer, an identity recognition card, a main sound and light alarm, a path planning unit, and a risk point detector. The identity recognizer, the identity recognition card, the main sound and light alarm, the path planning unit, and the risk point detector are all connected to the anti-misoperation host by signal. There are multiple identity recognizers, and the multiple identity recognizers are respectively installed at the doors of multiple electrical cabinets and the electrical machine room. The number of identity recognition cards is not less than two, and a blood pressure monitoring module and a heart rate monitoring unit are embedded in the identity recognition card. The risk point detector includes multiple groups of detection units, and each detection unit includes a projector and a camera installed at the top of the front side of the corresponding electrical cabinet; The path planning unit includes multiple guiding boards evenly laid on the passages in the electrical machine room. The perception and early warning system further includes a personnel monitoring unit also connected to the anti-misoperation host by signal. The personnel monitoring unit includes a judgment module, a timing module, and a data storage module.

[0007] In the above intelligent risk perception and early warning system based on IoT technology, when it is necessary to enter the machine room for operation, the target electrical cabinet can be located first, and the path can be planned, so as to guide the staff to directly reach the target electrical cabinet for operation, and the staff can also be monitored throughout the process when entering the machine room and be given multiple early warnings. Compared with the prior art, it can effectively prevent misoperations from occurring, and thus effectively reduce potential safety hazards.

[0008] As a further improvement of the present application, the projection range of the projector is in front of the electrical cabinet, and the width of the projection range is greater than the width of the electrical cabinet and less than 1 / 5 times the width of the electrical cabinet.

[0009] As a further improvement of the present application, the risk perception and early warning process includes the following steps: S1. The staff first receive an identity recognition card at the anti-misoperation host, and the electrical cabinet to be operated and the operation process are recorded in the identity recognition card. The staff receive the identity recognition card and wear it; S2. When the staff arrives at the door of the electrical machine room, the identity recognition card is swiped for the first time on the identity recognizer at the door of the electrical machine room. At this time, the identity recognizer at the door obtains the information in the identity recognition card. The path planning unit plans the path according to the electrical cabinet to be operated and displays it through multiple guiding boards. At the same time, the projector projects a guiding frame in front of the electrical cabinet to be operated; S3. The staff walks to the guide frame in front of the electrical cabinet to be operated according to the target path displayed on the floor of the machine room. During this process, when the staff deviates from the target path, the sub-sound and light alarm sounds the first alarm until returning to the target path and stops the alarm. Then, the second card swipe authentication is performed at the identity identifier on the electrical cabinet to be operated. If there is no match, the main sound and light alarm sounds the sound and light alarm again. When the deviation between the staff and the guide frame is too large, the main sound and light alarm sounds the sound and light alarm again. After multiple warnings and corrections, the operation begins; S4. The personnel monitoring unit monitors the staff's operation in step S3, and assesses the staff's level according to the staff's operation, and suspends the authority of low-level staff to enter the computer room to operate, thereby effectively avoiding potential risks caused by personal reasons.

[0010] As a further improvement of the present application, the levels of the staff are divided into A, A-, B, B-, C, C-, and the initial level of the staff is B. In step S4: When a staff member's level is upgraded to A, he or she does not need to participate in regular assessments; When the staff's level is A-, B, or B-, they need to participate in regular skill assessments and can normally enter the computer room to perform routine operations; When a staff member's level is C or C-, his / her permission to enter the computer room for operations will be suspended, and he / she will undergo skill training. After passing the training, his / her level will be upgraded to B.

[0011] As a further improvement of the present application, the specific operation process of step S4 is as follows: The timing module timely measures the time interval between the staff's two swiping of the identity card, and the data storage unit stores the alarm situation. The judgment module evaluates whether the staff has walked into the wrong operating compartment, whether they have moved according to the planned path, and whether they have overstayed their time based on the timing situation and the alarm situation. When it is determined that the staff has none of the above situations, it means that the staff has operated safely and the staff is upgraded. When it is determined that the staff has the above situations, the staff is demoted.

[0012] As a further improvement of the present application, the guiding board includes a lower backing plate and an upper cover plate covering the upper end of the lower backing plate. Rubber backing plates are fixedly connected between the four corners of the lower backing plate and the upper cover plate. An inner light-changing cavity is drilled inside the lower backing plate, and an X-shaped groove is drilled at the upper end of the lower backing plate. The X-shaped groove communicates with the inner light-changing cavity. An X-shaped guiding plate that matches it is clamped in the X-shaped groove. The X-shaped guiding plate includes a concentric plate at the center and two pairs of outer wing plates respectively fixedly connected to both sides of the concentric plate. The concentric plate and one pair of outer wing plates together form an arrow. A pressure sensor is installed in the middle of the upper end of the concentric plate, and the pressure sensor is in contact with the inner top end of the upper cover plate. An LED lamp is installed at the bottom end of the inner light-changing cavity, and the inner light-changing cavity is saturated and filled with a light-changing liquid.

[0013] As a further improvement of the present application, both the LED lamp and the pressure sensor are signal-connected to the anti-misoperation host. A sub-audio-visual alarm is also installed between the lower backing plate and the upper cover plate. The light-changing liquid is made of a mixture of transparent pure water and iron powder in a volume ratio of 5-10:1. Both pairs of outer wing plates are made of transparent electromagnetic materials and are connected in parallel with each other.

[0014] As another improvement of the present application, a misstep warning unit is also installed inside the lower backing plate. The misstep warning unit includes a variable plate layer that is connected in series with both pairs of outer wing plates at the same time. The variable plate layer is fixedly connected to the bottom of the lower backing plate. The lower backing plate is a flexible sealed capsule structure saturated and filled with an electrorheological fluid inside.

[0015] In summary, when it is necessary to enter the computer room for operation, the target electrical cabinet can be located first and the path can be planned, so as to guide the staff to directly reach the target electrical cabinet for operation. And it can also monitor the whole process when the staff enters the computer room, and give an early warning in time when there is an abnormality, which is convenient to correct the operation of the staff in time. Compared with the prior art, it can effectively prevent the occurrence of misoperation on non-target electrical cabinets, and thus can effectively reduce potential safety hazards; at the same time, with the setting of the personnel monitoring unit, the operation process can be monitored and rated, and then the staff who are not very skilled in operation can be screened out, so that this part of the staff can carry out corresponding learning and improvement later, so as to effectively avoid potential safety risks caused by their own skill factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the main system block diagram of the first embodiment of the present application; Figure 2 It is a partial layout schematic diagram inside the electrical computer room of the first embodiment of the present application; Figure 3 It is a schematic diagram of path planning for the electrical cabinet to be operated in the first embodiment of the present application; Figure 4 It is a schematic diagram of the principle of the personnel monitoring unit in the first embodiment of the present application; Figure 5 Isometric view of the guiding plate of the first embodiment of the present application; Figure 6 Partial isometric view of the lower backing plate of the first embodiment of the present application; Figure 7 Cross-sectional schematic view of the guiding plate in the target path of the first embodiment of the present application; Figure 8 Cross-sectional view of the guiding plate in the non-target path of the first embodiment of the present application; Figure 9 Cross-sectional schematic view of the guiding plate in the target path of the second embodiment of the present application; Figure 10 Cross-sectional schematic view of the guiding plate when the staff steps on the guiding plate in the non-target path when deviating from the path in the second embodiment of the present application.

[0017] Description of the reference numerals in the figure: 1 Guiding plate, 11 Lower backing plate, 12 Upper cover plate, 101 X-shaped groove, 102 Inner light-changing cavity, 103 Rubber backing plate, 2 Pressure sensor, 3 X-shaped guiding plate, 31 Concentric plate, 32 Outer wing plate, 4 LED lamp, 5 Light-changing plate layer. Specific embodiments

[0018] The following will describe the two embodiments of the present application in detail with reference to the accompanying drawings.

[0019] The first embodiment: Figure 1An intelligent risk perception and early warning system based on IoT technology is shown, which includes an anti-error host, an identity recognizer, an identity card, a main sound and light alarm, a path planning unit, and a risk point detector. The identity recognizer, the identity card, the main sound and light alarm, the path planning unit, and the risk point detector are all signal-connected to the anti-error host. There are multiple identity recognizers, and the multiple identity recognizers are respectively installed at the doors of multiple electrical cabinets and electrical machine rooms. The number of identity cards is not less than two, and a blood pressure monitoring module and a heart rate monitoring unit are embedded in the identity card. The risk point detector includes multiple groups of detection units. Each detection unit includes a projector and a camera installed at the top of the front side of the corresponding electrical cabinet. When the staff stands inside the guiding frame, the camera can obtain the top view drawing of this place, so as to facilitate understanding whether the staff stands inside the guiding frame and whether there is a large deviation from the guiding frame. When the deviation is too large and affects safe operation, the main sound and light alarm can be triggered, and then timely early warning and reminder can be carried out, so that the staff can operate stably. The projection range of the projector is in front of the electrical cabinet, and the width of the projection range is greater than the width of the electrical cabinet and less than 1 / 5 times the width of the electrical cabinet. Through the guiding frame, the best operation standing position can be displayed in front of the electrical cabinet, and at the same time, it is convenient to remind the staff of the target electrical cabinet, further reducing the occurrence of operations on non-target electrical cabinets and further reducing the occurrence of misoperations; The perception and early warning system further includes a personnel monitoring unit that is also signal-connected to the anti-error host. The personnel monitoring unit includes a judgment module, a timing module, and a data storage module. The path planning unit includes multiple guiding boards 1 evenly laid on the channels in the electrical machine room. The upper surface of the guiding board 1 is flush with the ground in the machine room. When entering the machine room for operation, the target electrical cabinet can be located first, and the path can be planned, so as to guide the staff to directly reach the target electrical cabinet for operation, and the staff can also be monitored throughout the process when entering the machine room and multiple early warnings can be carried out. Compared with the prior art, the occurrence of misoperations can be effectively prevented, and thus the potential safety hazards can be effectively reduced.

[0020] Such as Figures 2-3 , its risk perception and early warning process includes the following steps: S1. The staff first receives an identity card at the anti-error host, and the electrical cabinet to be operated and the operation process are entered into the identity card. The staff receives the identity card and wears it; S2. When the staff arrives at the door of the electrical machine room, they perform the first swipe card authentication of the identity card on the identity recognizer at the door of the electrical machine room. At this time, the identity recognizer at the door obtains the information in the identity card. The path planning unit performs path planning according to the electrical cabinet to be operated. The anti-misoperation host controls the LED lights 4 in multiple guiding boards 1 under the planned path to light up, thereby forming multiple consecutive luminous arrows. The staff can be effectively indicated by the multiple arrows to guide them to accurately reach the electrical cabinet to be operated. At the same time, the projector projects a guiding frame in front of the electrical cabinet to be operated; S3. The staff walks to the guiding frame in front of the electrical cabinet to be operated according to the target path displayed on the ground in the machine room. During this process, when the staff deviates from the target path, the sub-audio-visual alarm gives the first alarm until they return to the target path and the alarm stops. Then, they perform the second swipe card authentication at the identity recognizer on the electrical cabinet to be operated. When there is a mismatch, the main audio-visual alarm gives another audio-visual alarm. When the deviation of the staff from the guiding frame is too large, the main audio-visual alarm gives an audio-visual alarm again. After multiple warning reminders and corrections, the operation starts, greatly reducing the probability of misoperation and reducing potential safety hazards; S4. If Figure 4 , the personnel monitoring unit monitors the operation of the staff in step S3, conducts level evaluation according to the operation of the staff, and suspends the permission of low-level staff to enter the machine room for operation, so as to effectively avoid potential risks caused by personal reasons; The specific operation process of step S4 is as follows: The timing module times the time interval between the two swipes of the identity card by the staff. The data storage unit stores the alarm situation. The judgment module evaluates whether the staff has taken the wrong operation compartment, whether they have moved according to the planned path, and whether they have stayed overtime according to the timing situation and the alarm situation. When it is determined that the staff has none of the above situations, it means that the staff has operated safely and the staff is upgraded. When it is judged that the staff has the above situations, the staff is downgraded.

[0021] The levels of the staff are divided into A, A-, B, B-, C, C-. The initial level of the staff is B. In step S4: When the level of the staff is upgraded to A, they do not need to participate in regular assessments; When the levels of the staff are A-, B, B-, they need to participate in regular skills assessments and can normally enter the machine room for routine operations; When the levels of the staff are C, C-, the permission to enter the machine room for operation is suspended and they need to conduct skills learning. After passing the learning, the level is upgraded to B.

[0022] If Figures 5-6, the guiding board 1 includes a lower backing plate 11 and an upper cover plate 12 covering the upper end of the lower backing plate 11. Rubber cushion plates 103 are fixedly connected between the four corners of the lower backing plate 11 and the upper cover plate 12. An inner light-changing cavity 102 is dug inside the lower backing plate 11. An X-shaped groove 101 is dug at the upper end of the lower backing plate 11. The X-shaped groove 101 communicates with the inner light-changing cavity 102. An X-shaped guiding board 3 that matches it is clamped in the X-shaped groove 101. The X-shaped guiding board 3 includes a concentric plate 31 at the center and two pairs of outer wing plates 32 respectively fixedly connected to both sides of the concentric plate 31. The concentric plate 31 and one pair of outer wing plates 32 together form an arrow. A pressure sensor 2 is installed in the middle of the upper end of the concentric plate 31. The pressure sensor 2 is in contact with the inner top end of the upper cover plate 12. An LED lamp 4 is installed at the bottom end inside the inner light-changing cavity 102. The inner light-changing cavity 102 is saturated and filled with a light-changing liquid. Both the LED lamp 4 and the pressure sensor 2 are signal-connected to the anti-error host. A sub-audio-visual alarm is also installed between the lower backing plate 11 and the upper cover plate 12. The light-changing liquid is made of a mixture of transparent pure water and iron powder in a volume ratio of 5-10:1. Both pairs of outer wing plates 32 are made of transparent electromagnetic materials and are connected in parallel with each other. After path planning, the anti-error host controls the LED lamps 4 in the corresponding multiple guiding boards 1 to light up and emit light, as Figure 7 , and at the same time controls the outer wing plates 32 on the side against the path in the multiple guiding boards 1 to be electrified, so that they generate magnetic force, and then generate an adsorption force on the iron powder in the light-changing liquid, making it gradually adsorbed on the back of the corresponding outer wing plate 32 to block it, making it difficult to transmit light or only transmit weak light at this place. At this time, looking from the outside to the inside, the outer wing plates 32 and the concentric plate 31 on the side along the path can transmit light significantly because there is no or little iron powder blocking them, thus forming an arrow along the path to realize the real-time display and guidance of the target path of the staff. At this time, when the staff is walking, the pressure sensors 2 in the multiple guiding boards 1 on the path will all generate force data as expected, while the multiple pressure sensors 2 on the non-target path will not generate force data, as Figure 8 , when the pressure sensor 2 on the non-target path generates data, it means that the staff has deviated from the target path. At this time, this data is fed back to the sub-control center, and the sub-control center can directly control the sub-audio-visual alarm to give an alarm, so as to timely remind the staff who has deviated from the path until they return to the target path. Compared with the prior art, it can give an early warning at the initial stage when the staff deviates from the target electrical cabinet, which is convenient for timely correction, thus greatly reducing the risk of misoperation, reducing potential safety hazards, and improving the safety of the staff during power operation.

[0023] In summary, when it is necessary to enter the machine room for operation, the target electrical cabinet can be located first and the path can be planned, so as to guide the staff to directly reach the target electrical cabinet for operation. In addition, the staff can be monitored throughout the process when entering the machine room, and early warnings can be given in case of abnormalities, which is convenient for correcting the staff's operations in time. Compared with the prior art, it can effectively prevent the occurrence of misoperations on non-target electrical cabinets, and thus effectively reduce potential safety hazards. At the same time, with the setting of the personnel monitoring unit, the operation process can be monitored and rated, and then the staff with less proficient operations can be screened out, so that this part of the staff can carry out corresponding learning and improvement subsequently, thereby effectively avoiding potential safety risks caused by their own skill factors.

[0024] The second implementation manner: Based on the first implementation manner, this implementation manner adds a misstep warning unit, and the rest is the same as the first implementation manner.

[0025] Figure 9 As shown, a misstep warning unit is also installed in the lower backing plate 11. The misstep warning unit includes a variable plate layer 5 connected in series with two pairs of outer wing plates 32 at the same time. No matter which outer wing plate 32 is electrified, the variable plate layer 5 will be electrified together, and then it will harden. At this time, when the staff steps on the guiding plate 1 on the target path, it is relatively stable. The variable plate layer 5 is fixedly connected to the bottom of the lower backing plate 11. The lower backing plate 11 is a flexible sealed capsule structure filled with electro-rheological fluid saturated inside. For example Figure 10 , when deviating from the path, on the one hand, the sub-audio-visual alarm will give an audio-visual alarm in terms of vision and hearing. On the other hand, the inner and outer wing plates 32 of the guiding plate 1 on the non-target path are not electrified, so the variable plate layer 5 is not electrified either. At this time, it is in a flowing state. When the staff steps on this guiding plate 1, an obvious sense of instability will be generated, and then a warning will be given to the staff in terms of touch, making the reminder effect on the staff better, and further ensuring that they can quickly return to the target path and reducing the safety hazards of misoperations.

[0026] Combined with the current actual requirements, the protection scope of the above implementation manner adopted in this application is not limited to this. Within the scope of knowledge possessed by those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. Intelligent risk perception and early warning system based on IoT technology, characterized by: It includes an anti-mistake host, an identity identifier, an identity card, a main sound and light alarm, a path planning unit and a risk point detector. The identity identifier, the identity card, the main sound and light alarm, the path planning unit and the risk point detector are all connected to the anti-mistake host signal. There are multiple identity identifiers, and the multiple identity identifiers are respectively installed at multiple electrical cabinets and electrical room doors. The number of the identity cards is not less than two, and the identity cards are embedded with a blood pressure monitoring module and a heart rate monitoring unit. The risk point detector includes multiple groups of detection units, and the detection unit includes a projector and a camera installed on the top of the front side of the corresponding electrical cabinet; The path planning unit comprises a plurality of guide plates (1) evenly laid in the passages in the electrical room, and the sensing warning system further comprises a personnel monitoring unit which is also connected to the anti-error host signal, and the personnel monitoring unit comprises a judgment module, a timing module and a data storage module.

2. According to claim 1, the intelligent risk perception and early warning system based on IoT technology is characterized by: The projection range of the projector is directly in front of the electrical cabinet, and the width of the projection range is greater than the width of the electrical cabinet and less than 1 / 5 of the width of the electrical cabinet.

3. The intelligent risk perception and early warning system based on IoT technology according to claim 1 is characterized by: The risk perception and early warning process includes the following steps: S1. The staff first receives the identity card at the anti-misoperation host, and the electrical cabinet to be operated and the operation process are entered into the identity card. The staff receives the identity card and wears it; S2, when the staff arrives at the door of the electrical room, they swipe their identification card for the first time on the identification device at the door of the electrical room. At this time, the identification device at the door obtains the information in the identification card, and the path planning unit plans the path according to the electrical cabinet to be operated, and displays it through multiple guide boards (1). At the same time, the projector projects a guide frame in front of the electrical cabinet to be operated; S3. The staff walks to the guide frame in front of the electrical cabinet to be operated according to the target path displayed on the floor of the machine room. During this process, when the staff deviates from the target path, the sub-sound and light alarm sounds the first alarm until returning to the target path and stops the alarm. Then, the second card swipe authentication is performed at the identity identifier on the electrical cabinet to be operated. If there is no match, the main sound and light alarm sounds the sound and light alarm again. When the deviation between the staff and the guide frame is too large, the main sound and light alarm sounds the sound and light alarm again. After multiple warnings and corrections, the operation begins; S4. The personnel monitoring unit monitors the staff's operation in step S3, and assesses the staff's level according to the staff's operation, and suspends the low-level staff's permission to enter the computer room to operate, thereby effectively avoiding potential risks caused by personal reasons.

4. The intelligent risk perception and early warning system based on IoT technology according to claim 3 is characterized by: The staff members are classified into A, A-, B, B-, C, and C-. The initial staff member's level is B. In step S4: When a staff member's level is upgraded to A, he or she does not need to participate in regular assessments; When the staff's level is A-, B, or B-, they need to participate in regular skill assessments and can normally enter the computer room to perform routine operations; When a staff member's level is C or C-, his / her permission to enter the computer room for operations will be suspended, and he / she will undergo skill training. After passing the training, his / her level will be upgraded to B.

5. The intelligent risk perception and early warning system based on IoT technology according to claim 4 is characterized in that: The specific operation process of step S4 is as follows: The timing module timely measures the time interval between the staff's two swiping of the identity card, and the data storage unit stores the alarm situation. The judgment module evaluates whether the staff has walked into the wrong operating compartment, whether they have moved according to the planned path, and whether they have overstayed their time based on the timing situation and the alarm situation. When it is determined that the staff has none of the above situations, it means that the staff has operated safely and the staff is upgraded. When it is determined that the staff has the above situations, the staff is demoted.

6. The intelligent risk perception and early warning system based on IoT technology according to claim 1 is characterized by: The guide plate (1) comprises a lower pad (11) and an upper cover plate (12) covering the upper end of the lower pad (11); rubber pads (103) are fixedly connected between the four corners of the lower pad (11) and the upper cover plate (12); an inner light-changing cavity (102) is bored inside the lower pad (11); an X-shaped groove (101) is bored at the upper end of the lower pad (11); the X-shaped groove (101) and the inner light-changing cavity (102) are communicated with each other; an X-shaped guide plate (3) matching with the X-shaped groove (101) is snapped into place inside the X-shaped groove (101). The X-shaped index plate (3) comprises a concentric plate (31) located at the center and two pairs of outer wing plates (32) respectively fixedly connected to both sides of the concentric plate (31), the concentric plate (31) and the pair of outer wing plates (32) together form an arrow, a pressure sensor (2) is installed in the middle of the upper end of the concentric plate (31), the pressure sensor (2) is in contact with the top end of the upper cover plate (12), an LED lamp (4) is installed at the bottom end of the inner light-changing cavity (102), and the inner light-changing cavity (102) is saturated with light-changing liquid.

7. The intelligent risk perception and early warning system based on IoT technology according to claim 6 is characterized by: The LED light (4) and the pressure sensor (2) are both connected to the anti-error host signal, a sub-sound and light alarm is also installed between the lower pad (11) and the upper cover (12), the light-changing liquid is a mixture of transparent pure water and iron powder in a volume ratio of 5-10:1, the two pairs of outer wing plates (32) are both made of transparent electromagnetic material, and the two pairs of outer wing plates (32) are connected in parallel with each other.

8. The intelligent risk perception and early warning system based on IoT technology according to claim 7 is characterized by: An error-stepping warning unit is also installed in the lower pad (11), the error-stepping warning unit comprising a variable plate layer (5) connected in series with two pairs of outer wing plates (32), the variable plate layer (5) being fixedly connected to the bottom of the lower pad (11), the lower pad (11) being a flexible sealed capsule structure filled with electrorheological fluid.

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