Stress device and cavern surrounding rock construction early warning system

Abstract

The utility model provides a stress device and a cavern surrounding rock construction early warning system, and the stress device comprises a placement pedestal, a laser positioning part, a stress sensor, a stress sensor, and an early warning device. The central position of the placement pedestal is provided with a laser positioning part; the reaction assembly comprises a stress feedback piece fixed above the laser positioning piece, and the stress feedback piece comprises an inner shaft and a stress ring arranged outside the inner shaft in a sleeving mode; and high-pressure gas is filled between the inner shaft and the stress ring. The stress device and the cavern surrounding rock construction early warning system provided by the utility model can monitor the surrounding rock state in all directions and at multiple angles, and have the advantages of high accuracy and sensitivity of surrounding rock state detection, so that surrounding rock deformation caused in the construction process is captured in time and is better fed back to design and construction sites, safe construction is guided in time, and the construction efficiency is improved. And the safe work requirement of cavern construction is met.

Description

Technical Field

[0001] The utility model relates to the technical field of construction safety monitoring, in particular to a stress device and a cavern surrounding rock construction early warning system. Background Art

[0002] Pumped storage power stations mostly use underground plant layouts. The underground cavern groups are large in scale and complex in distribution. The stability of the surrounding rock is a key issue in the construction process and is directly related to the safety of the project construction.

[0003] The stability of surrounding rock is affected by numerous factors, including geological conditions, cavern structure, groundwater, stress changes, and blasting. For example, large-scale underground excavation within a mountain will cause significant unloading and stress adjustments in the rock mass surrounding the cavern complex. Underground caverns are mostly constructed using drilling and blasting methods, and the vibrations caused by blasting inevitably impact the surrounding rock and supporting structures, adversely affecting the stability of the surrounding rock. Therefore, safety monitoring of the surrounding rock of underground caverns during construction is particularly important and a crucial task in the construction of large-scale underground powerhouse cavern complexes.

[0004] The existing cavern surrounding rock safety monitoring is generally done by manually carrying a reading instrument to the surrounding rock area to collect data regularly and monitor the changes in the surrounding rock data. This monitoring method has the following shortcomings: (1) Manual data collection is extremely dangerous and has low collection efficiency. The frequency of multiple fixed-point collection is limited, the monitoring processing is not timely, and the accuracy is limited. (2) The sensing method is relatively simple, the monitoring direction is relatively simple, the measurement basis is relatively small, the monitoring accuracy is limited, and more accurate monitoring cannot be carried out. It is impossible to collect subtle surrounding rock vibrations or displacement changes. Therefore, the existing cavern surrounding rock safety monitoring method cannot meet the needs of cavern construction safety monitoring work. Utility Model Content

[0005] In view of the defects of the existing technology, the utility model provides a stress device and a cavern surrounding rock construction early warning system, which can effectively solve the above problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a stress device, comprising:

[0008] A placement base (100), wherein a laser positioning member (101) is provided at the center of the placement base (100);

[0009] The reaction component (200) comprises a force feedback component (201) fixed above the laser positioning component (101), wherein the force feedback component (201) comprises an inner shaft (201a) and a force ring (201b) sleeved on the outside of the inner shaft (201a); and high-pressure gas is filled between the inner shaft (201a) and the force ring (201b).

[0010] Preferably, the inner shaft (201a) is a curved cylinder, with fixed plates (201a-1) provided at both ends; the fixed plates (201a-1) at both ends are movably connected to the force ring (201b) via a toughness spring (202);

[0011] The tough springs (202) at both ends of the inner shaft (201a) are arranged in a staggered manner.

[0012] Preferably, the outer ring of the stress-bearing ring (201b) is provided with an air guide opening (201b-1); the air guide opening (201b-1) is provided with a micro air port (201b-2);

[0013] An air sensor (102) is provided on the upper ring of the placement base (100), and the sensing end of the air sensor (102) is connected to the interior of the micro air port (201b-2) and communicated with the micro air port (201b-2).

[0014] Preferably, the fixing plate (201a-1) at the bottom of the inner shaft (201a) is externally connected to a protective shell (201a-2); the laser positioning component (101) is located inside the protective shell (201a-2);

[0015] An observation window (201a-3) is provided on the top of the protective shell (201a-2).

[0016] Preferably: comprising the aforementioned stress device, as well as a basic module (300) and an interactive module (400);

[0017] The basic module (300) comprises an MCU unit (301), a voltage stabilizing module (302), a collection module (303), and an input / output control module (304); the input end of the collection module (303) is connected to the laser positioning component (101) and the gas sensing component (102); the power supply end of the MCU unit (301) is connected to the voltage stabilizing module (302); the collection end of the MCU unit (301) is connected to one end of the collection module (303); and the other end of the collection module (303) is connected to the input / output control module (304);

[0018] The interactive module (400) comprises an acousto-optic indication module (401), a wireless data transmission module (402), a Bluetooth module (403) and an SD storage module (404); the acousto-optic indication module (401), the wireless data transmission module (402), the Bluetooth module (403) and the SD storage module (404) are all electrically connected to the MCU unit (301).

[0019] Preferably, the voltage stabilizing module (302) includes an LDO circuit and a PMOS circuit, wherein the LDO circuit is used to convert the battery voltage to 3.3V and has a 3.3V voltage power supply interface; the PMOS circuit is used to convert the battery voltage to 5V and has a 5V voltage power supply interface;

[0020] The MCU unit (301), the Bluetooth module (403), the SD storage module (404), the gas sensor (102), and the laser positioning component (101) are electrically connected to the 3.3V voltage power supply interface of the LDO circuit;

[0021] The wireless data transmission module (402), the input / output control module (304), the acquisition module (303) and the sound and light indication module (401) are electrically connected to the 5V voltage power supply interface of the PMOS circuit.

[0022] The stress device and cavern surrounding rock construction early warning system provided by the utility model have the following advantages:

[0023] The utility model provides a stress device and cavern surrounding rock construction early warning system, which can monitor the surrounding rock status in all directions and angles, and has the advantages of high accuracy and sensitivity in surrounding rock status detection, so as to timely capture the surrounding rock deformation caused by the construction process, better feedback to the design and construction site, timely guide safe construction, and meet the safety work needs of cavern construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 This is a schematic diagram of the overall structure of a stress device provided by the utility model;

[0026] Figure 2 A schematic structural diagram of the reaction assembly provided by the present invention;

[0027] Figure 3 A schematic diagram of the structure of the placement base provided by the utility model;

[0028] Figure 4 A schematic cross-sectional view of a stress device provided by the present invention;

[0029] Figure 5 This is a structural diagram of the cavern surrounding rock construction early warning system provided by the utility model;

[0030] Figure 6 This is a structural connection diagram of the cavern surrounding rock construction early warning system provided by the utility model;

[0031] in:

[0032] Mounting base 100; laser positioning component 101; gas sensing component 102;

[0033] Reaction assembly 200; force feedback member 201; resilient spring 202; inner shaft 201a; force ring 201b; fixing plate 201a-1; protective shell 201a-2; observation window 201a-3; air guide opening 201b-1; micro air port 201b-2;

[0034] Basic module 300; MCU unit 301; voltage stabilization module 302; acquisition module 303; input and output control module 304;

[0035] Interaction module 400; sound and light indication module 401; wireless data transmission module 402; Bluetooth module 403; SD storage module 404. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0039] Furthermore, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0040] Example 1

[0041] Reference Figure 1-Figure 4 , this embodiment provides a stress device, including a placement base 100 and a reaction component 200;

[0042] The placement base 100 is the deployment location of the entire sensor device. A laser positioning member 101 is provided at the center of the placement base 100. The camera of the laser positioning member 101 faces upwards and can monitor the displacement status of the upper components.

[0043] The reaction assembly 200, as a collection of components that react to the surrounding rock state, includes a force feedback component 201 fixed above the laser positioning component 101. The force feedback component 201 can amplify and react to the surrounding rock surface and its subtle changes. The force feedback component 201 includes an inner shaft 201a and a force ring 201b sleeved on the outer portion of the inner shaft 201a. A closed space is formed between the two, and the contact surfaces are fitted with interference material.

[0044] In detail, high-pressure gas is filled between the inner shaft 201a and the force ring 201b. When the state of the surrounding rock changes, the inner shaft 201a will be exposed to this change and will be displaced or shaken. At this time, the force ring 201b will undergo inertial motion under the push of the high-pressure gas, amplifying this displacement or shaking and applying it to itself.

[0045] Furthermore, the inner shaft 201a is a curved cylinder with an inward depression, providing ample flow space for the gas, and fixed plates 201a-1 are provided at both ends. The fixed plate 201a-1 at one end is fixed to the surface of the surrounding rock by fastening external components, and is in direct contact with the surrounding rock. When the state of the surrounding rock changes, the fixed plate 201a-1 is first in contact with the change; the other end is fixed to the mounting base 100, and the mounting base 100 has a sensing-related structure placed on one end, and a circuit main board with a built-in monitoring system and circuit; the fixed plates 201a-1 at both ends are movably connected to the force ring 201b by a tough spring 202. The tough spring 202 has extremely strong toughness, which allows the force ring 201b to swing based on the inner shaft 201a to further amplify the state change of the inner shaft 201a, and this swing, under the restriction of the tough spring 202, has the effect of amplifying the manifestation of force and also has the effect of limiting the maximum swing amplitude;

[0046] In detail, the resilient springs 202 at both ends of the inner shaft 201a are staggered to maximize the swing amplitude, and are also conducive to fixing the force ring 201b.

[0047] Furthermore, an air guide opening 201b-1 is provided on the outer ring of the stress ring 201b. The air guide opening 201b-1 allows external components to enter and realize movable connection. A micro air port 201b-2 is provided in the air guide opening 201b-1. When the high-pressure gas inside the stress ring 201b does not undergo a significant change, the micro air port 201b-2 is close to a closed state. Once the stress ring 201b shakes, the micro air port 201b-2 will discharge a portion of the gas under the pressure of the internal air pressure. After each shaking, it represents a change in the state of the surrounding rock. At the same time, while the micro air port 201b-2 discharges a portion of the gas, the external inflation device replenishes the gas to keep the internal air pressure constant, in preparation for the next shaking and monitoring of the stress ring 201b.

[0048] Specifically, a gas sensor 102 is mounted around the mounting base 100. The sensing end of the gas sensor 102 connects to and communicates with the interior of the micro-port 201b-2. The gas sensor 102 senses the amount of gas discharged from the micro-port 201b-2 and, based on the air pressure, determines the duration and amplitude of the shaking. The gas sensor 102 also reports the amount of gas discharged to the inflation device, determining the amount of gas to be replenished after the shaking ends, thereby maintaining a constant internal air pressure.

[0049] The stress device provided in this embodiment has the following advantages:

[0050] (1) The fixing plate 201a-1 at one end of the inner shaft 201a is fixed to the surface of the surrounding rock by fastening the external components, and is in direct contact with the surrounding rock. Moreover, the contact area with the surrounding rock is large, so that it can sensitively sense changes in the surrounding rock state;

[0051] (2) When the fixed plate 201a-1 senses a change in the surrounding rock state, it causes the position of the inner shaft 201a to change. When the position of the inner shaft 201a changes, on the one hand, its displacement state can be monitored by the laser positioning member 101; on the other hand, the air sensor 102 can sense the change in the displacement state. Therefore, the laser positioning member 101 and the air sensor 102 are used as two sensing components to simultaneously detect the displacement change caused by the change in the surrounding rock state, thereby improving the accuracy of the surrounding rock state detection.

[0052] (3) The reaction component 200 includes an inner shaft 201a and a force ring 201b. The force ring 201b shakes based on the inner shaft 201a, which can amplify the state change of the inner shaft 201a and has the effect of amplifying force, thereby further improving the accuracy and sensitivity of surrounding rock state detection.

[0053] Therefore, in this embodiment, a sensing structure capable of more accurate status monitoring is formed through the integrated arrangement of multiple sensing components and the high-precision force amplification effect of the force feedback member.

[0054] The stress device provided in this embodiment is a more complete, more accurate and more timely surrounding rock status data monitoring system, forming more effective monitoring.

[0055] Example 2

[0056] Reference Figure 1 , which is the second embodiment of the present invention, is based on the previous embodiment and differs from the previous embodiment in that: the fixing plate 201a-1 at the bottom of the inner shaft 201a is connected to a protective shell 201a-2, which is used to protect the laser positioning component 101 from moisture or collision during cave operations;

[0057] Furthermore, an observation window 201a-3 is provided on the top of the protective shell 201a-2 to ensure that the internal laser positioning component 101 can work normally, thereby accurately monitoring the shaking amplitude of the force feedback component 201 on the top. The laser positioning component 101 plus the four gas sensing components 102 can realize multi-frequency environmental adaptation monitoring of the surrounding rock status in all directions.

[0058] Example 3

[0059] Reference Figure 5 and Figure 6 , which is the third embodiment of the present utility model, and provides a cavern surrounding rock construction early warning system. This embodiment is based on the previous embodiment, and is different from the previous embodiment in that: the cavern surrounding rock construction early warning system provided by this embodiment includes the aforementioned stress device, and also includes a basic module 300 and an interactive module 400.

[0060] The basic module 300 includes some necessary circuit modules for monitoring and interaction sources, including the MCU unit 301 as the core of the device, a voltage regulator module 302 connected to the battery, an acquisition module 303 responsible for integrating signals, and an input / output control module 304 responsible for transmitting status electrical signals. The acquisition module 303 receives status data from the laser positioning component 101 and the gas sensor 102. The circuit connection relationship is as follows: the input end of the acquisition module 303 is connected to the laser positioning component 101 and the gas sensor 102; the power supply end of the MCU unit 301 is connected to the voltage regulator module 302; the acquisition end of the MCU unit 301 is connected to one end of the acquisition module 303; and the other end of the acquisition module 303 is connected to the input / output control module 304.

[0061] Furthermore, the interactive module 400, that is, the module integration that performs various functional interactions with the basic module 300, includes an audio-visual indication module 401 responsible for warning, a wireless data transmission module 402 responsible for remote signal transmission, a Bluetooth module 403 responsible for remote startup of the control device, and an SD storage module 404 responsible for storing abnormal state fluctuations; its circuit connection relationship is: the audio-visual indication module 401, the wireless data transmission module 402, the Bluetooth module 403 and the SD storage module 404 are all electrically connected to the MCU unit 301.

[0062] Example 4

[0063] Reference Figure 5 and Figure 6 , which is the fourth embodiment of the present invention, is based on the previous embodiment and differs from the previous embodiment in that: the voltage stabilizing module 302 includes an LDO circuit and a PMOS circuit. The LDO circuit is used to convert the battery voltage to 3.3V and has a 3.3V voltage power supply interface; the PMOS circuit is used to convert the battery voltage to 5V and has a 5V voltage power supply interface. The two circuits are used to convert the external battery voltage to 3.3V and 5V respectively, and supply power to each module, wherein,

[0064] The MCU unit 301, the Bluetooth module 403, the SD storage module 404, the air sensor 102 and the laser positioning component 101 are electrically connected to the 3.3V voltage power supply interface of the LDO circuit;

[0065] The wireless data transmission module 402 , the input / output control module 304 , the acquisition module 303 and the sound and light indication module 401 are electrically connected to the 5V voltage power supply interface of the PMOS circuit.

[0066] Therefore, the MCU unit 301, Bluetooth module 403, SD storage module 404, gas sensor 102, and laser positioning component 101 receive the 3.3V voltage output after conversion by the LDO circuit; the wireless data transmission module 402, input / output control module 304, acquisition module 303, and sound and light indication module 401 receive the 5V voltage output after conversion by the PMOS circuit. Different modules require different voltage values, and the external voltage needs to be stepped down before it can be used by each module. This is a necessary module for starting monitoring.

[0067] Furthermore, the acquisition module 303 is electrically connected to the MCU unit 301 and the input-output control module 304 respectively. After receiving the measurement instruction from the MCU unit 301, the input sensor signal is collected, converted into the result electrical signal and read back to the MCU unit 301. The acquisition module 303 and the input-output control module 304 have a 4-way 4-wire switching function, which can realize the switching of multiple signals at any time, and then monitor the displacement, shake, and stress data, and have 400-5000Hz sweep frequency excitation and sinusoidal signal sampling functions, with a sampling resolution of 0.1Hz.

[0068] Furthermore, the SD storage module 404 enables large-capacity data storage. The MCU unit 301 reads the impact waveform data from the air sensor 102 and the laser positioning component 101 and stores it in the SD storage module 404 as a file. The air sensor 102 and the laser positioning component 101 have low-power continuous measurement capabilities, capable of capturing the peak acceleration value of the impact event. The core is the ultra-low-power ADXL372 accelerometer.

[0069] Example 5

[0070] Reference Figure 5 , which is the fifth embodiment of the present utility model. This embodiment is based on the previous embodiment and differs from the previous embodiment in that: the sound and light indication module 401 responds to stress data exceeding the warning threshold by activating a warning sound. The sound and light indication module 401 uses two active buzzers, low frequency and high frequency. A low-frequency warning sound is activated when a low-level warning is generated, and a high-frequency warning sound is activated when a high-level warning is generated. A WS2812 digital multi-color LED light group is used to flash to indicate the location of the abnormality, and different colors are used to indicate the degree of warning.

[0071] Furthermore, the wireless data transmission module 402 detects the data read back by the collection module 303. If there is a change or the threshold is exceeded, wireless data reporting is started to report the data to the remote data center. The wireless transmission adopts 4G / 5G or LoRa to achieve remote transmission.

[0072] Furthermore, the Bluetooth module 403 can wake up the MCU unit 301 through the terminal connection to configure device parameters, check battery voltage, etc.

[0073] Furthermore, the MCU unit 301 is the core of the device and adopts the STM32L0 low-power 32-bit microcontroller. After the early warning system is powered on, the MCU unit enters a dormant state and is awakened by the change signals of the gas sensor 102 and the laser positioning component 101, and cooperates with other modules to perform periodic status monitoring.

[0074] The stress device and cavern surrounding rock construction early warning system provided by the utility model have the following advantages:

[0075] The utility model provides a stress device and cavern surrounding rock construction early warning system, which can monitor the surrounding rock status in all directions and angles, and has the advantages of high accuracy and sensitivity in surrounding rock status detection, so as to timely capture the surrounding rock deformation caused by the construction process, better feedback to the design and construction site, timely guide safe construction, and meet the safety work needs of cavern construction.

[0076] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0077] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0078] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A stress device, characterized in that: include: A placement base (100), wherein a laser positioning member (101) is provided at the center of the placement base (100); The reaction component (200) comprises a force feedback component (201) fixed above the laser positioning component (101), wherein the force feedback component (201) comprises an inner shaft (201a) and a force ring (201b) sleeved on the outside of the inner shaft (201a); and high-pressure gas is filled between the inner shaft (201a) and the force ring (201b).

2. A stress device according to claim 1, characterized in that: The inner shaft (201a) is a curved cylinder, with fixed plates (201a-1) provided at both ends; the fixed plates (201a-1) at both ends are movably connected to the force ring (201b) via a toughness spring (202); The tough springs (202) at both ends of the inner shaft (201a) are arranged in a staggered manner.

3. A stress device according to claim 2, characterized in that: The outer ring of the stress-bearing ring (201b) is provided with an air guide opening (201b-1); the air guide opening (201b-1) is provided with a micro air port (201b-2); An air sensor (102) is provided on the upper ring of the placement base (100), and the sensing end of the air sensor (102) is connected to the interior of the micro air port (201b-2) and communicated with the micro air port (201b-2).

4. A stress device according to claim 3, characterized in that: The fixing plate (201a-1) at the bottom of the inner shaft (201a) is externally connected to a protective shell (201a-2); the laser positioning component (101) is located inside the protective shell (201a-2); An observation window (201a-3) is provided on the top of the protective shell (201a-2).

5. Cavern surrounding rock construction early warning system, characterized by: It comprises a stress device as claimed in claim 4, as well as a basic module (300) and an interactive module (400); The basic module (300) comprises an MCU unit (301), a voltage stabilizing module (302), a collection module (303), and an input / output control module (304); the input end of the collection module (303) is connected to the laser positioning component (101) and the gas sensing component (102); the power supply end of the MCU unit (301) is connected to the voltage stabilizing module (302); the collection end of the MCU unit (301) is connected to one end of the collection module (303); and the other end of the collection module (303) is connected to the input / output control module (304); The interactive module (400) comprises an acousto-optic indication module (401), a wireless data transmission module (402), a Bluetooth module (403) and an SD storage module (404); the acousto-optic indication module (401), the wireless data transmission module (402), the Bluetooth module (403) and the SD storage module (404) are all electrically connected to the MCU unit (301).

6. The cavern surrounding rock construction early warning system according to claim 5, characterized in that: The voltage stabilizing module (302) includes an LDO circuit and a PMOS circuit. The LDO circuit is used to convert the battery voltage to 3.3V and has a 3.3V voltage power supply interface. The PMOS circuit is used to convert the battery voltage to 5V and has a 5V voltage power supply interface. The MCU unit (301), the Bluetooth module (403), the SD storage module (404), the gas sensor (102), and the laser positioning component (101) are electrically connected to the 3.3V voltage power supply interface of the LDO circuit; The wireless data transmission module (402), the input / output control module (304), the acquisition module (303) and the sound and light indication module (401) are electrically connected to the 5V voltage power supply interface of the PMOS circuit.

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