Automated gas geochemical exploration apparatus and automated measurement method

Abstract

The application discloses an automatic gas geochemical exploration equipment and an automatic measurement method, wherein the equipment comprises a double-gas-path drill bit, an exploration mechanism and a microcontroller; the double-gas-path drill bit comprises independent gas inlet and outlet gas paths; the exploration mechanism comprises a first exploration channel, a second exploration channel and a microcontroller; the first exploration channel is provided with an electrically-controlled gas valve connected with the microcontroller; the second exploration channel comprises a sensor container and a gas pump; the sensor container is provided with a plurality of parallel sensors connected with the microcontroller; one end of the sensor container is communicated with the outlet gas path, and the other end of the sensor container is connected with the gas pump; the gas pump is connected with the microcontroller and an external gas collecting device; and the microcontroller is wirelessly connected with an external intelligent terminal. The application can realize automatic exploration and automatic recording of soil gas, improve the exploration work efficiency and reduce the influence of personnel operation errors on exploration data results.

Description

Technical Field

[0001] This invention relates to the field of mineral exploration machinery and equipment, and in particular to an automated gas geochemical exploration equipment and automatic measurement method for gas geochemical prospecting. Background Technology

[0002] Deep mineral resource exploration has become a crucial direction in my country's new round of mineral exploration breakthroughs. The focus is gradually shifting towards concealed deposits in overburdened areas and deep, blind deposits, making mineral exploration increasingly challenging. Simultaneously, major mining companies have shifted their exploration focus to existing old mines, continuously increasing the exploration depth. This has made previously overlooked, deeply buried overburdened areas with high mineralization potential important target areas for exploration. Many regions, due to their unique natural landscapes and favorable mineralization conditions, have a naturally huge demand for deep mineral exploration technologies.

[0003] Traditional soil geochemical exploration methods have limited effectiveness in deep mineral exploration. The greater the ore body's burial depth, the less effective traditional geochemical methods become. MinEx, a mineral resources development consulting firm, summarized data on base metal and gold deposits worldwide from 1900 to 2016 and found that the deeper the deposit, the fewer effective exploration methods are available. In particular, the discovery of gold and base metal deposits at depths greater than 200m is often unrelated to geochemical methods. This is usually because traditional solid prospecting media are affected by gravity and have difficulty migrating to shallower depths.

[0004] Unlike traditional solid media, gaseous media are dispersed without being affected by gravity. Deep-penetrating geochemical measurements are considered capable of rapidly detecting deep mineralization and fault structures in deeply buried overburden areas, showing promising application prospects for mineral exploration in these areas. Currently, soil gas (soil gas) measurement is the most mature application. Soil acts as a shield for underground gases diffusing into the atmosphere; therefore, the gas composition and anomalies in soil are relatively stable and less affected by atmospheric flow. By measuring the concentration of these gases in the soil, the distribution of deep, concealed ore bodies can be inferred. Although gas geochemical measurement methods have achieved some success in mineral exploration in overburdened areas, most of the work remains experimental.

[0005] Currently, gas geochemical exploration methods are mainly divided into two types. One method involves collecting soil gases in the field and transporting them back to the laboratory using containers such as gas collection tanks and bags. These gases are then analyzed using large-scale instruments such as pulsed fluorescence, gas chromatography-mass spectrometry, etc., to obtain the content of various gases. This method offers relatively accurate numerical measurements, but it is costly and time-consuming, and therefore is often used in scientific research projects. Commercial mineral exploration projects aimed at profit are more sensitive to time constraints and costs, so this method is rarely used. The other method involves using portable gas measuring instruments to conduct on-site measurements in the field, directly obtaining the values ​​of various gases. However, due to limitations in the development of modern micro gas sensor technology, micro gas sensors lag behind large-scale instruments used in laboratories in terms of gas types, interference resistance, and accuracy.

[0006] Therefore, to address the above issues, there is a need for an automated device specifically designed for geochemical exploration of terranes. Summary of the Invention

[0007] The main objective of this invention is to provide an equipment and automatic measurement method that can automatically complete gas geochemical exploration.

[0008] The technical solution adopted in this invention is:

[0009] An automated gas geochemical exploration device is provided, characterized in that it comprises:

[0010] A dual-air-path drill bit includes a drill bit, which contains an independent first air path and a second air path that run through the entire drill bit. The first air path is an air inlet path, and the second air path is an air outlet path. After the drill bit forms a hole in the soil being tested, one end of the first air path and the second air path are placed in the hole.

[0011] The exploration mechanism includes the first exploration route, the second exploration route, and the microcontroller;

[0012] One end of the first exploration passage is connected to the other end of the first gas passage, and the other end of the first exploration passage is connected to the external atmosphere. The first exploration passage is equipped with an electrically controlled gas valve connected to a microcontroller.

[0013] The second survey path includes a sensor container and an air pump. The sensor container contains multiple parallel sensors connected to a microcontroller. One end of the sensor container is connected to the second air path, and the other end of the sensor container is connected to the air pump. The air pump is also connected to the microcontroller and an external gas collection device.

[0014] The microcontroller connects wirelessly to an external smart terminal.

[0015] Following the above technical solution, the automated gas geochemical exploration equipment also includes a satellite positioning module connected to a microcontroller.

[0016] Following the above technical solution, the automated gas geochemical exploration equipment also includes a display screen connected to a microcontroller.

[0017] Following the above technical solution, the microcontroller is specifically connected to the air pump and the electrically controlled air valve via a relay.

[0018] Following the above technical solution, the microcontroller and the external smart terminal are specifically connected via Bluetooth.

[0019] Following the above technical solution, the drill bit is a thread drill.

[0020] According to the above technical solution, the first air path includes a first air path connector and a first air pipe. The first air pipe runs through the entire drill bit, with one end connected to the first air path connector and the other end placed in the soil being tested during use. The second air path is arranged parallel to the first air path and includes a second air path connector and a second air pipe. The second air pipe runs through the entire drill bit, with one end connected to the second air path connector and the other end placed in the soil being tested during use.

[0021] According to the above technical solution, the first exploration path includes a third air circuit connector and a third air pipe. One end of the third air circuit connector is connected to the first air circuit of the dual air circuit drill bit, and the other end of the third air circuit connector is connected to the third air pipe. The third air pipe is equipped with an electrically controlled air valve connected to a microcontroller.

[0022] According to the above technical solution, one end of the sensor container is provided with a fourth air path connector, which is connected to the second air path of the dual air path drill bit, and the other end is connected to the air pump.

[0023] This invention also provides an automated method for measuring soil gases. This method, based on the automated gas geochemical exploration equipment described above, specifically includes the following steps:

[0024] The dual-gas-path drill bit drills into the soil being tested, creating a hole; the gas geochemical exploration equipment is wirelessly connected to the smart terminal.

[0025] After the exploration agency is started, the air pump operates and draws air out of the borehole through the second air passage. The microcontroller controls the electronically controlled air valve to be closed, creating a low pressure inside the borehole. The gas in the soil being tested enters the borehole, and the air pressure value is collected by the sensor in the second exploration passage.

[0026] The smart terminal acquires the collected air pressure value. When the air pressure value reaches a preset threshold and is maintained for a preset time, it sends a control command to the microcontroller to open the electronically controlled air valve. After the electronically controlled air valve is opened, air enters through the first air path to relieve the low pressure. The gas in the hole enters the sensor container through the second air path. Data is sensed by multiple parallel sensors and transmitted to the smart terminal through the microcontroller.

[0027] The beneficial effects of this invention are as follows: The automated gas geochemical exploration equipment of this invention achieves automatic gas extraction and intake through a dual-gas-path drill bit and exploration mechanism. When gas extraction is required, the microcontroller controls the gas pump to start. After the gas pressure in the sensor container reaches a certain level and is maintained for a period of time, the gas pump is turned off, and the electrically controlled gas valve in the first exploration path connected to the intake gas path is controlled, allowing external atmosphere to enter the first exploration path. The gas pressure in the borehole increases, and the soil gas passes through multiple parallel sensors, thereby measuring various gas parameters. The automatic switching between the two stages of extraction and intake can be performed multiple times as needed, eliminating the need for manual drill bit reversal. Therefore, the equipment of this invention can achieve automatic soil gas exploration, transforming the previously cumbersome manual steps into automated operations, improving exploration efficiency, and reducing the impact of human error on exploration data results. Furthermore, the microcontroller can wirelessly connect to an external smart terminal, allowing the collected data to be sent to and recorded in real time, thus achieving automated data recording.

[0028] Furthermore, the device of the present invention is equipped with multiple sensors, such as a thermometer, a hygrometer, a barometer, and a gas concentration sensor, all of which are placed in the same sensor container and send these data to a smart terminal, thereby realizing real-time recording of these data.

[0029] Furthermore, the device of the present invention is also equipped with a satellite positioning module, which can send the positioning data to the smart terminal for recording in real time while sampling; at the same time, at the beginning of each sampling, the smart terminal can ask the user to input the sampling point name, so that the positioning information and sampling point information can be marked in the gas sampling data.

[0030] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of the automated gas geochemical exploration equipment according to an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the exploration mechanism according to an embodiment of the present invention;

[0034] Figure 3 This is a control flowchart of the microcontroller according to an embodiment of the present invention;

[0035] Figure 4 This is a flowchart illustrating the workflow of the smart terminal according to an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the display interface of the display screen in an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the sampling interface of the smart terminal according to an embodiment of the present invention. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0039] It should be noted that the illustrations provided in the embodiments of the present invention are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0040] In this invention, it should also be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used only for descriptive and distinguishing purposes and should not be construed as indicating or implying relative importance.

[0041] Furthermore, it should be noted that the features of the various embodiments of the present invention can be combined or integrated in whole or in part, and as those skilled in the art will understand, they can interact and operate in different ways. Each embodiment can be implemented independently of each other or in association with one another.

[0042] like Figure 1 As shown, the automated gas geochemical exploration equipment of this invention mainly includes a dual-gas-path drill bit 10 and an exploration mechanism 20.

[0043] The dual-air-path drill bit 10 includes a drill bit 11, which contains an independent first air path 12 and a second air path 13 that run through the entire drill bit. The first air path 12 is an air inlet path, and the second air path 13 is an air outlet path. After the drill bit forms a hole in the soil being tested, one end of both the first air path 12 and the second air path 13 is placed in the hole. The drill bit 11 can be a threaded drill.

[0044] Furthermore, the first air passage 12 includes a first air passage connector and a first air pipe, the first air pipe runs through the entire drill bit 11, one end of which is connected to the first air passage connector, and the other end is placed in the soil to be tested during use; the second air passage is arranged parallel to the first air passage and includes a second air passage connector and a second air pipe (not shown in the figure), wherein the second air pipe runs through the entire drill bit, one end of which is connected to the second air passage connector, and the other end is placed in the soil to be tested during use.

[0045] like Figure 2 As shown, the exploration mechanism 20 includes a first exploration path 21, a second exploration path 22, and a microcontroller 23. One end of the first exploration path 21 is connected to the other end of the first gas path 12, and the other end is connected to the external atmosphere. An electrically controlled gas valve 211 connected to the microcontroller 23 is installed on the first exploration path 21. The second exploration path 22 includes a sensor container 221 and an air pump 222. The sensor container 221 contains multiple parallel sensors connected to the microcontroller. One end of the sensor container 221 is connected to the second gas path 13, and the other end is connected to the air pump 222. The air pump 222 is also connected to the microcontroller 23 and an external gas collection device (not shown in the figure), which is mainly used to collect soil gases passing through the sensor container 221 for subsequent analysis. The microcontroller 23 is wirelessly connected to an external smart terminal 30 (a wireless connection module, such as a Bluetooth module or a WiFi module, can be configured). In this embodiment of the invention, the wireless connection is achieved through Bluetooth module 25, which is connected to microcontroller 23. The smart terminal 30 can be a mobile phone or a tablet computer.

[0046] Specifically, the first survey passage 21 includes a third air passage connector 212 and a third air pipe 213. One end of the third air passage connector 212 is connected to the first air passage 12 of the dual air passage drill bit 10 (specifically, it can be connected to the first air passage connector). The other end of the third air passage connector 212 is connected to the third air pipe 213, and the third air pipe 213 is provided with an electrically controlled air valve 211 connected to the microcontroller 23.

[0047] Furthermore, one end of the sensor container 221 is provided with a fourth air passage connector 223, which is connected to the second air passage 13 of the dual air passage drill bit 10 (specifically, it can be connected to the second air passage connector), and the other end can be connected to the air pump 222 through an air pipe.

[0048] Multiple parallel sensors may include a gas concentration sensor, a pressure sensor, a temperature sensor, and a humidity sensor. Sensor container 221 is responsible for connecting the gas concentration sensor, pressure sensor, temperature sensor, and humidity sensor to the second gas path 13 in an airtight manner, and enabling these sensors to communicate with the microcontroller 23.

[0049] The microcontroller 23 is connected to the satellite positioning module 24, the Bluetooth module 25, and multiple sensors via digital circuitry to exchange data. The microcontroller 23 can be connected to the air pump 222 and the electrically controlled air valve 211 via relays to control the start / stop of the air pump 222 and the opening / closing of the air valve. Smartphones or tablets communicate with the Bluetooth module 25 via Bluetooth technology.

[0050] All data in existing mineral exploration are geographic information data, therefore, they must include spatial information, namely the sampling point name and coordinates. Existing gas transmitters, such as portable multi-component gas rapid analyzers (PMGRA), lack both positioning devices and devices for recording sampling point names, thus failing to automatically correlate data with geographic spatial locations. Exploration personnel must manually record this information. In contrast, the device of this invention is equipped with a satellite positioning module 24, which transmits positioning data to a smart terminal 30 in real time for recording during sampling. Simultaneously, at the start of each sampling, the corresponding software application on the smart terminal 30 prompts the user to input the sampling point name; both pieces of information are marked in the gas sampling data.

[0051] This automated gas geochemical exploration equipment also includes a display screen 26 connected to a microcontroller 23, which can display various data values ​​from the sensors in real time.

[0052] In a preferred embodiment of the present invention, the microcontroller 23 may be an STM32F103ZET6 microcontroller. The satellite positioning module 24 and Bluetooth module 25 can be implemented using a Quectel EC200U module. The EC200U is a wireless communication module integrating LTE, GPS, BeiDou positioning, and Bluetooth. It communicates with the microcontroller via the UART protocol and connects to the motherboard via sockets JP22 and JP23. The display screen 26 may be an OLED screen driven by an SH1107 with a resolution of 128×128. It communicates with the microcontroller 23 via the SPI protocol and connects to the motherboard via socket JP21. Multiple gas concentration sensors may be provided, such as three, all of which may be from the Winsen ME3 series. They communicate with the microcontroller 23 via the UART protocol and connect to the motherboard via sockets JP5, JP6, and JP7. The air pressure, temperature, and humidity sensors can be implemented using a BME280 module. The BME280 is a three-in-one sensor combining temperature, humidity, and air pressure. It communicates with the microcontroller via the IIC protocol and connects to the motherboard via socket JP20. Air pump 222 is a JS320U03PM 12V DC air pump, which connects to the main board via socket JP9. To achieve program-controlled air pump switching, a GAQY211G2S solid-state relay is used on the main board to control the 3.3V to 12V output. Electrically controlled air valve 211 is a JS0702L03PM 12V two-position three-way DC solenoid valve, which connects to the main board via socket JP11. Similar to air pump 222, a GAQY211G2S relay is also used for on / off control. Sensor container 221 can be 3D printed using 9600SLA photosensitive resin. Smart terminal 30 is a smartphone running the Android operating system.

[0053] The automated soil gas measurement method of this invention is mainly based on the automated gas geochemical exploration equipment described in the above embodiments. The automated measurement method specifically includes the following steps:

[0054] S1. The dual-gas-path drill bit drills into the soil being tested, forming a hole; the gas geochemical exploration equipment is wirelessly connected to the smart terminal.

[0055] S2. After the exploration mechanism is started, the air pump operates and draws air out of the hole through the second air passage. The microcontroller controls the electronically controlled air valve to be closed, forming a low pressure inside the hole. The gas in the soil being tested enters the hole, and the air pressure value is collected by the sensor in the second exploration passage.

[0056] S3. The smart terminal acquires the collected air pressure value. When the air pressure value reaches the preset threshold and is maintained for a preset time, it sends a control command to the microcontroller to open the electronically controlled air valve. After the electronically controlled air valve is opened, air enters through the first air path to relieve the low pressure. The gas in the hole enters the sensor container through the second air path. Data is sensed by multiple parallel sensors and transmitted to the smart terminal through the microcontroller.

[0057] Current mineral exploration work typically involves recording data at sampling points in the field. However, existing gas detectors do not support data recording at sampling points. Therefore, in practice, explorers must manually read data from the instrument screen and transcribe it into a field logbook, which is extremely inefficient. This invention, by wirelessly connecting a smart terminal to its automated gas geochemical exploration equipment, can transmit all collected data to the smart terminal for recording in real time, significantly improving data recording efficiency.

[0058] In existing technologies, the sampling and measurement process of gas in a borehole after drilling is divided into two stages. The first stage involves creating a low pressure by evacuating the borehole, releasing soil gas from the borehole walls into the borehole. During this stage, very little gas migrates to the sensor, resulting in a low sensor reading. The second stage involves releasing the negative pressure in the borehole. Specifically, this is typically achieved by reversing the threaded drill to allow outside air into the borehole. At this point, the soil gas that entered the borehole in the first stage is transported to the sensor, resulting in a higher sensor reading. The device of this invention achieves automatic switching between the two stages because it contains two independent gas paths. After connecting to the exploration mechanism and the dual-gas-path drill bit, the first gas path is the intake path, and the second gas path is the exhaust path. After the device is started, the air pump operates to draw air out of the borehole, while the electrically controlled air valve is closed. This causes a low pressure to form inside the borehole, allowing soil gas to enter—stage one. The intelligent terminal can determine whether the low pressure has reached a threshold value and the duration of the low pressure (the standard for this threshold and duration can be customized based on the user's practical experience) by analyzing the gas pressure value fed back by the device. After a period of time, the smart terminal instructs the device to open the gas valve and release the low pressure. The gas in the hole will then enter the sensor container through the second gas path and be detected by the sensor, which is stage two. The two-stage transition in the sampling process is completely automated by the program, eliminating the need for manual reverse drilling.

[0059] To implement the above method, the present invention designs a specific automation program, which is divided into two parts: one part is embedded software (also known as firmware) running on the microcontroller, and the other part is application software (also known as App) running on a mobile phone or tablet computer.

[0060] The firmware execution logic of the microcontroller is as follows Figure 3 As shown, the main steps include:

[0061] Step 1: Start;

[0062] Step 2. Start and initialize all modules, and control the air pump to stop and the air valve to close;

[0063] Step 3. Receive Bluetooth commands (e.g., from a smart terminal);

[0064] Step 4. Determine if a start sampling command has been received. If yes, proceed to Step 5; otherwise, return to Step 3 and continue waiting for a command.

[0065] Step 5. The air pump starts and the air valve closes;

[0066] Step 6. Read sensor and positioning data;

[0067] Step 7. Update the data to the screen;

[0068] Step 8. Send data via Bluetooth;

[0069] Step 9. Receive Bluetooth commands;

[0070] Step 10. Determine if an instruction to open the gas valve has been received. If yes, proceed to Step 12; otherwise, proceed to Step 11.

[0071] Step 11. Determine if a sampling completion command has been received. If yes, proceed to Step 13; otherwise, proceed to Step 6.

[0072] Step 12. Control the electric air valve to open;

[0073] Step 13. Control the air pump to stop and the electronically controlled air valve to close;

[0074] Step 14. End.

[0075] As can be seen, the microcontroller, through the aforementioned software, can automatically complete the entire exploration process of the soil to be tested. During this process, it automatically collects sensor data and positioning data and sends them to the smart terminal via Bluetooth. The entire process requires no complex manual operation.

[0076] The operating logic of application software to achieve automatic data reception and recording on smart terminals (such as mobile phones or tablets) is as follows: Figure 4 As shown, the main steps include:

[0077] Step 1. Start;

[0078] Step 2. Connect the microcontroller of the exploration agency to the above-mentioned equipment via Bluetooth;

[0079] Step 3. User enters the sampling point name;

[0080] Step 4. Send a sampling start command via Bluetooth to the microcontroller of the automated gas geochemical exploration equipment;

[0081] Step 5. Receive sensor and location data via Bluetooth and write it to a file;

[0082] Step 6. Determine if the electrically controlled gas valve of the automated gas geochemical exploration equipment is open. If yes, proceed to Step 10; otherwise, proceed to Step 7.

[0083] Step 7. Determine if the air pressure is lower than the set value. If yes, proceed to Step 8; otherwise, proceed to Step 5.

[0084] Step 8. Determine if the air pressure has remained below the threshold for a period of time. If yes, proceed to Step 9; otherwise, proceed to Step 5.

[0085] Step 9. Send a Bluetooth command to open the electronically controlled air valve;

[0086] Step 10. Determine if the gas concentration sensor reading has exceeded the peak value for some time. If yes, proceed to Step 11; otherwise, proceed to Step 5.

[0087] Step 11. Send sampling completion command via Bluetooth;

[0088] Step 12. End.

[0089] In the implementation of this method, the firmware is written in C / C++, while the smart terminal application can be developed using TypeScript based on the React Expo architecture. The embedded software displays content on the device screen as follows: Figure 5 As shown, the sample screenshots of the smart terminal application are as follows: Figure 6 .

[0090] As can be seen from the above method embodiments, the present invention can realize the automatic switching between the two stages of soil gas exploration, and record the collected data in real time. The data includes location information and collection point information, which transforms the tedious steps that originally required manual operation into automated operation, improves the efficiency of exploration work, and reduces the impact of human operation errors on the exploration data results.

[0091] It should be noted that, depending on the implementation needs, the various steps / components described in this application can be broken down into more steps / components, or two or more steps / components or parts of the operation of steps / components can be combined into new steps / components to achieve the purpose of this invention.

[0092] The order of the steps in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0093] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An automated gas geochemical exploration apparatus, characterized in that, include: A dual-air-path drill bit includes a drill bit, which contains an independent first air path and a second air path that run through the entire drill bit. The first air path is an air inlet path, and the second air path is an air outlet path. After the drill bit forms a hole in the soil being tested, one end of the first air path and the second air path are placed in the hole. The exploration mechanism includes a first exploration path, a second exploration path, and a microcontroller. It uses a dual-air-path drill bit and cooperates with the exploration mechanism to achieve automatic air extraction and automatic air intake in the two air paths. One end of the first exploration passage is connected to the other end of the first gas passage, and the other end of the first exploration passage is connected to the external atmosphere. The first exploration passage is equipped with an electrically controlled gas valve connected to a microcontroller. The second survey path includes a sensor container and an air pump. The sensor container contains multiple parallel sensors connected to a microcontroller. One end of the sensor container is connected to the second air path, and the other end of the sensor container is connected to the air pump. The air pump is also connected to the microcontroller and an external gas collection device. The microcontroller connects wirelessly to an external smart terminal; When air is drawn out of the hole through the second air passage, the microcontroller controls the electronically controlled air valve to be closed. When the air pressure reaches the preset threshold and is maintained for a preset time, the microcontroller controls the electronically controlled air valve to open, and air is introduced through the first air passage to relieve the low pressure.

2. The automated gas geochemical exploration equipment according to claim 1, characterized in that, This automated gas geochemical exploration equipment also includes a satellite positioning module connected to a microcontroller.

3. The automated gas geochemical exploration equipment according to claim 1, characterized in that, This automated gas geochemical exploration equipment also includes a display screen connected to a microcontroller.

4. The automated gas geochemical exploration equipment according to claim 1, characterized in that, The microcontroller is specifically connected to the air pump and the electrically controlled air valve via relays.

5. The automated gas geochemical exploration equipment according to claim 1, characterized in that, The microcontroller connects to the external smart terminal via Bluetooth.

6. The automated gas geochemical exploration equipment according to claim 1, characterized in that, The drill bit is a thread drill.

7. The automated gas geochemical exploration equipment according to any one of claims 1-6, characterized in that, The first air path includes a first air path connector and a first air pipe. The first air pipe runs through the entire drill bit, with one end connected to the first air path connector and the other end placed in the soil being tested during use. The second air path is arranged parallel to the first air path and includes a second air path connector and a second air pipe. The second air pipe runs through the entire drill bit, with one end connected to the second air path connector and the other end placed in the soil being tested during use.

8. The automated gas geochemical exploration equipment according to any one of claims 1-6, characterized in that, The first exploration path includes a third air line connector and a third air pipe. One end of the third air line connector is connected to the first air line of the dual air line drill bit, and the other end of the third air line connector is connected to the third air pipe. The third air pipe is equipped with an electrically controlled air valve connected to a microcontroller.

9. The automated gas geochemical exploration equipment according to any one of claims 1-6, characterized in that, One end of the sensor container is equipped with a fourth air path connector, which is connected to the second air path of the dual air path drill bit, and the other end is connected to the air pump.

10. An automated method for measuring soil gases, characterized in that, This method, based on the automated gas geochemical exploration equipment according to any one of claims 1-9, specifically includes the following steps: The dual-gas-path drill bit drills into the soil being tested, creating a hole; the gas geochemical exploration equipment is wirelessly connected to the smart terminal. After the exploration agency is started, the air pump operates and draws air out of the borehole through the second air passage. The microcontroller controls the electronically controlled air valve to be closed, creating a low pressure inside the borehole. The gas in the soil being tested enters the borehole, and the air pressure value is collected by the sensor in the second exploration passage. The smart terminal acquires the collected air pressure value. When the air pressure value reaches a preset threshold and is maintained for a preset time, it sends a control command to the microcontroller to open the electronically controlled air valve. After the electronically controlled air valve is opened, air enters through the first air path to relieve the low pressure. The gas in the hole enters the sensor container through the second air path. Data is sensed by multiple parallel sensors and transmitted to the smart terminal through the microcontroller.

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