Automatic gas geochemical exploration equipment and automatic measurement method

Abstract

The invention discloses automatic gas geochemical exploration equipment and an automatic measurement method, and the equipment comprises a double-gas-path drill bit which internally comprises a gas inlet path and a gas outlet path which are independent and penetrate through the whole drill bit; the exploration mechanism comprises a first exploration passage, a second exploration passage and a microcontroller; an electric control air valve connected with the microcontroller is arranged on the first surveying passage; the second surveying channel comprises a sensor container and an air pump, a plurality of sensors which are connected in parallel and connected with the microcontroller are arranged in the sensor container, one end of the sensor container is communicated with the air outlet channel, the other end of the sensor container is connected with the air pump, the air pump is connected with the microcontroller, and the air pump is further connected with an external air collecting device; and the microcontroller is wirelessly connected with an external intelligent terminal. According to the invention, automatic exploration and automatic recording of soil gas can be realized, the exploration work efficiency is improved, and the influence of personnel operation errors on exploration data results is reduced.

Description

Technical Field

[0001] The present invention relates to the field of mineral exploration mechanical equipment, and particularly to an automated gas geochemical exploration device and an automatic measurement method for gas geochemical prospecting. Background Art

[0002] The exploration of deep mineral resources has become an important direction in the new round of prospecting breakthrough actions in China. The focus of work has gradually shifted towards the exploration of concealed ore bodies in covered areas and deep blind ore bodies, and the difficulty of mineral exploration has been increasing. At the same time, major mining companies have also shifted the focus of exploration to existing old mines, with the exploration depth continuously increasing, making the deeply buried covered areas with high metallogenic potential that were previously ignored become important prospecting target areas. In many regions, due to their special natural landscapes and favorable metallogenic conditions, there is a natural and huge demand for deep prospecting technologies.

[0003] Traditional soil geochemical exploration methods have limited effectiveness in deep prospecting work. The greater the burial depth of the ore body, the more difficult it is for traditional geochemical means to produce results. The mineral resources development consulting company MinEx summarized the data of base metal and gold deposits in the world from 1900 to 2016 and found that the deeper the deposit is buried, the fewer effective exploration means are available. In particular, the discovery of gold deposits and base metal deposits with a burial depth greater than 200m is often unrelated to geochemical means. This is usually because the traditional solid prospecting medium is affected by gravity and is difficult to migrate to the shallow part.

[0004] Different from traditional solid media, since the dispersion of gas media is not affected by gravity, deep penetration soil gas measurement based on gas geochemistry is considered to be able to quickly reflect deep mineralized bodies and fracture structures in deeply buried covered areas and has good application prospects in prospecting in covered areas. Currently, the most mature application is soil gas (gas in soil) measurement. Soil is a shielding layer in the diffusion of underground gas to the atmosphere. Therefore, the gas components and anomalies in soil are relatively stable and less affected by atmospheric airflow. By measuring the concentrations of these gases in soil, the distribution of deep concealed ore bodies can be inferred. Although gas geochemical measurement methods have achieved some successful cases in mineral exploration in covered areas, most of the work is only experimental exploration.

[0005] At present, gas geochemical exploration methods are mainly divided into two types. One is to carry the soil gas collected in the field back to the laboratory through containers such as gas collection tanks and gas collection bags, and use large instruments such as pulsed fluorescence and gas chromatography-mass spectrometry for analysis and testing to obtain the content of various gases. This method has relatively accurate numerical measurements, but high costs and long cycles, so it is often used in scientific research projects. Commercial mineral exploration projects for profit are sensitive to time cycles and costs, so this method is rarely used. The other method is to use a portable gas measuring instrument to conduct on-site measurements in the field to directly obtain the numerical values of various gases. Limited by the development of modern micro gas sensor technology, micro gas sensors lag behind the large instruments used in the laboratory in terms of gas types, anti-interference ability, accuracy, etc.

[0006] Therefore, in view of the above problems, an automated device specifically designed for geochemical exploration of the earth's crust is needed. Summary of the Invention

[0007] The main purpose of the present invention is to provide a device and an automatic measurement method capable of automatically completing gas geochemical exploration.

[0008] The technical solution adopted by the present invention is as follows:

[0009] Provide an automated gas geochemical exploration device, characterized by including:

[0010] A dual-gas path drill bit, including a drill bit, and the drill bit contains independent first and second gas paths that run through the entire drill bit. The first gas path is an intake gas path, and the second gas path is an exhaust gas path; after the drill bit drills a hole in the soil to be measured to form a hole, one end of each of the first gas path and the second gas path is placed in the hole;

[0011] An exploration mechanism, including a first exploration path, a second exploration path, and a microcontroller;

[0012] Among them, one end of the first exploration path is connected to the other end of the first gas path, the other end of the first exploration path is connected to the external atmosphere, and an electronically controlled gas valve connected to the microcontroller is provided on the first exploration path;

[0013] The second exploration path includes a sensor container and an air pump. Among them, a plurality of sensors connected in parallel to the microcontroller are provided in the sensor container. One end of the sensor container is connected to the second gas path, the other end of the sensor container is connected to the air pump, and the air pump is connected to the microcontroller. The air pump is also connected to an external gas collection device;

[0014] The microcontroller is wirelessly connected to an external intelligent terminal.

[0015] According to the above technical solution, the automated gas geochemical exploration device further includes a satellite positioning module, which is connected to the microcontroller.

[0016] Continuing with the above technical solution, the automated gas geochemical exploration equipment further includes a display screen, which is connected to the microcontroller.

[0017] Continuing with the above technical solution, the microcontroller is specifically connected to the air pump and the electronically controlled air valve through a relay.

[0018] Continuing with the above technical solution, the microcontroller is specifically connected to the external intelligent terminal through Bluetooth.

[0019] Continuing with the above technical solution, the drill bit is a threaded drill.

[0020] Continuing with the above technical solution, the first gas path includes a first gas path connector and a first gas pipe. The first gas pipe runs through the entire drill bit, one end of which is connected to the first gas path connector, and the other end is placed in the soil to be measured during use; the second gas path is arranged in parallel with the first gas path and includes a second gas path connector and a second gas pipe. The second gas pipe runs through the entire drill bit, one end of which is connected to the second gas path connector, and the other end is placed in the soil to be measured during use.

[0021] Continuing with the above technical solution, the first exploration path includes a third gas path connector and a third gas pipe. One end of the third gas path connector is connected to the first gas path of the dual-gas-path drill bit, the other end of the third gas path connector is connected to the third gas pipe, and an electronically controlled air valve connected to the microcontroller is provided on the third gas pipe.

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

[0023] The present invention also provides a method for automatically measuring soil gas. The method is based on the automated gas geochemical exploration equipment described in the above technical solution, and specifically includes the following steps:

[0024] The dual-gas-path drill bit drills into the soil to be measured to form a hole; the gas geochemical exploration equipment is wirelessly connected to the intelligent terminal;

[0025] After the exploration mechanism is started, the air pump operates, and pumps air out of the hole through the second gas path. The electronically controlled air valve is controlled by the microcontroller to be in a closed state to form a low pressure in the hole. The gas in the soil to be measured enters the hole and the air pressure value is collected by the sensor in the second exploration path;

[0026] The intelligent terminal obtains the collected air pressure value. When the air pressure value reaches the preset threshold and remains for the preset time, a control instruction to open the electronically controlled air valve is sent to the microcontroller. After the electronically controlled air valve is opened, air enters through the first gas path to relieve the low pressure. The gas in the hole enters the sensor container through the second gas path, and data is sensed by multiple parallel sensors and transmitted to the intelligent terminal through the microcontroller.

[0027] The beneficial effects of the present invention are as follows: The automated gas geochemical exploration equipment of the present invention realizes automatic air extraction and automatic air intake for two air paths through a dual-air-path drill bit in cooperation with an exploration mechanism. When air extraction is required, the air pump is controlled to start by the microcontroller. When the air pressure value in the sensor container reaches a certain air pressure and is maintained for a period of time, the air pump is turned off, and the electrically controlled air valve in the first exploration path connected to the intake air path is controlled. External air enters the first exploration path, the air pressure in the hole increases, and the gas in the soil passes through multiple parallel sensors, thereby measuring various gas parameters. According to the need, the automatic switching between the two stages of air extraction and air intake for exploration can be carried out multiple times, and there is no need for manual reverse operation of the drill bit. It can be seen that the equipment of the present invention can realize the automatic exploration of soil gas, convert the originally cumbersome steps that require manual operation into automated operation, improve the exploration work efficiency, and reduce the influence of personnel operation errors on the exploration data results. Moreover, the microcontroller is wirelessly connected to an external intelligent terminal, and the collected data can be sent to the intelligent terminal in real time and recorded, thus realizing automated data recording.

[0028] Furthermore, the equipment of the present invention is equipped with multiple sensors, such as a thermometer, a hygrometer, a barometer, and a gas concentration sensor, and they are all placed in the same sensor container, and these data are sent to the intelligent terminal to realize the real-time recording of these data.

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

[0030] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

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

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

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

[0035] Figure 4 is the flowchart of the operation of the intelligent terminal according to an embodiment of the present invention;

[0036] Figure 5 is the schematic diagram of the display interface of the display screen according to an embodiment of the present invention;

[0037] Figure 6 is the schematic diagram of the sampling interface of the intelligent terminal according to an embodiment of the present invention. Detailed implementation manners

[0038] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present 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 only used to explain the present invention and are not used to limit the present invention.

[0039] It should be noted that the drawings provided in the embodiments of the present invention only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the drawings, rather than being drawn according to the number, shape and size of the components in actual implementation. The types, numbers and proportions of the components in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0040] In the present invention, it should also be noted that when terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, when terms such as "first" and "second" appear, they are only used for descriptive and distinguishing purposes and cannot be understood as indicating or implying relative importance.

[0041] In addition, it should also be noted that the features of various embodiments of the present invention can be partially or wholly combined or integrated, and as can be understood by those skilled in the art, they can interact and operate in different ways. Each embodiment can be implemented independently of each other or in an associated relationship.

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

[0043] Among them, the dual-gas-path drill bit 10 includes a drill bit 11, and the drill bit contains an independent first gas path 12 and a second gas path 13 that penetrate the entire drill bit. The first gas path 12 is an intake gas path, and the second gas path 13 is an exhaust gas path. After the drill bit forms a hole in the soil to be measured, one end of each of the first gas path 12 and the second gas path 13 is placed in the hole. The drill bit 11 can be a threaded drill.

[0044] Further, the first gas path 12 includes a first gas path connector and a first gas pipe. The first gas pipe penetrates the entire drill bit 11, one end of which is connected to the first gas path connector, and the other end is placed in the soil to be measured during use. The second gas path is arranged in parallel with the first gas path and includes a second gas path connector and a second gas pipe (not shown in the figure). The second gas pipe penetrates the entire drill bit, one end of which is connected to the second gas path connector, and the other end is placed in the soil to be measured during use.

[0045] As Figure 2 shown, the exploration mechanism 20 includes a first exploration path 21, a second exploration path 22, and a microcontroller 23. Among them, one end of the first exploration path 21 is connected to the other end of the first gas path 12, the other end of the first exploration path 21 is connected to the external atmosphere, and an electronically controlled gas valve 211 connected to the microcontroller 23 is provided on the first exploration path 21. The second exploration path 22 includes a sensor container 221 and an air pump 222. A plurality of parallel-connected sensors connected to the microcontroller are provided in the sensor container 221. One end of the sensor container 221 is connected to the second gas path 13, the other end of the sensor container 221 is connected to the air pump 222, and the air pump 222 is connected to the microcontroller 23. The air pump 222 is also connected to an external gas collection device (not shown in the figure), which is mainly used to collect the soil gas passing through the sensor container 221 for subsequent analysis and research. The microcontroller 23 is wirelessly connected to an external intelligent terminal 30 (a wireless connection module can be set, such as a Bluetooth module or a WiFi module). In the embodiment of the present invention, the wireless connection is achieved through a Bluetooth module 25, which is connected to the microcontroller 23. The intelligent terminal 30 can be a mobile phone or a tablet computer.

[0046] Specifically, the first exploration path 21 includes a third gas path connector 212 and a third gas pipe 213. One end of the third gas path connector 212 is connected to the first gas path 12 of the dual-gas-path drill bit 10 (specifically, it can be connected to the first gas path connector), the other end of the third gas path connector 212 is connected to the third gas pipe 213, and an electronically controlled gas valve 211 connected to the microcontroller 23 is provided on the third gas pipe 213.

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

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

[0049] Among them, the microcontroller 23 is connected to the satellite positioning module 24, the Bluetooth module 25, and multiple sensors in a digital circuit manner to achieve data exchange. The microcontroller 23 can be connected to the air pump 222 and the electronically controlled gas valve 211 through a relay to achieve the start and stop of the air pump 222 and the opening and closing of the gas valve. The smart phone or tablet establishes communication with the Bluetooth module 25 through Bluetooth technology.

[0050] All types of data in existing mineral exploration are geographical information data, so they must carry spatial information, that is, the sampling point name and the sampling point coordinates. Existing gas transmitters such as the Portable Multi-component Gas Rapid Analyzer (PMGRA) do not have a positioning device or a device for recording the sampling point name, so the data cannot be automatically corresponded to the geographical spatial position, and the exploration personnel must manually record such information. However, the device of the present invention is equipped with a satellite positioning module 24, and the positioning data is sent to the intelligent terminal 30 for recording in real time during sampling. At the same time, at the beginning of each sampling, the corresponding software application of the intelligent terminal 30 will require the user to input the sampling point name, and both of these two types of information are marked in the gas sampling data.

[0051] The automated gas geochemical exploration device further includes a display screen 26, which is connected to the microcontroller 23. It can display various data values of the sensors in real time.

[0052] In a preferred embodiment of the present invention, the microcontroller 23 can use a microcontroller of model STM32F103ZET6. The satellite positioning module 24 and the Bluetooth module 25 can be implemented by the Quectel EC200U module. EC200U is a wireless communication module that integrates LTE, GPS, Beidou positioning, and Bluetooth. It communicates with the microcontroller through the UART protocol and is connected to the main board through sockets JP22 and JP23. The display screen 26 can use an OLED screen driven by SH1107 with a resolution of 128×128. It communicates with the microcontroller 23 through the SPI protocol and is connected to the main board through socket JP21. Multiple gas concentration sensors can be set, such as 3, and the models can all be selected from the Weisheng ME3 series, communicate with the microcontroller 23 through the UART protocol, and are connected to the main board through sockets JP5, JP6, and JP7. The air pressure, temperature, and humidity sensors can be implemented by the BME280 module. BME280 is a three-in-one temperature, humidity, and air pressure sensor that communicates with the microcontroller through the IIC protocol and is connected to the main board through socket JP20. The air pump 222 uses a JS320U03PM 12V DC air pump, which is connected to the mainboard via the socket JP9. In order to realize program control of the air pump switch, a GAQY211G2S solid-state relay is used on the mainboard to realize 3.3V to 12V control. The electric control air valve 211 uses a JS0702L03PM12V two-position three-way DC solenoid valve, which is connected to the mainboard via the socket JP11. Similar to the air pump 222, a GAQY211G2S relay is also used for on-off control. The sensor container 221 can be three-dimensionally printed using 9600SLA photosensitive resin. The smart terminal 30 uses a smart phone running the Android operating system.

[0053] The automatic soil gas measurement method of the embodiment of the present invention is mainly based on the automatic gas geochemical exploration equipment of the above embodiment, and the automatic measurement method specifically includes the following steps:

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

[0055] S2. After the exploration mechanism is started, the air pump starts to operate and draws air out of the hole through the second air path. The microcontroller controls the electric control air valve to be in a closed state, forming a low pressure in the hole. The gas in the soil to be tested enters the hole, and the air pressure value is collected through the sensor of the second exploration path;

[0056] S3. The intelligent terminal obtains the collected air pressure value. When the air pressure value reaches the preset threshold and remains for the preset time, it sends a control instruction to open the electric control air valve to the microcontroller. After the electric control 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, and data is sensed by multiple parallel sensors and transmitted to the intelligent terminal through the microcontroller.

[0057] In the existing mineral exploration work, data is usually recorded in the field with sampling points as the unit. However, the existing gas detection transmitters do not support recording data with sampling points as the unit. Therefore, in actual work, exploration personnel must manually read the data through the instrument screen and copy it into the field record book, with extremely low efficiency. In the present invention, by wirelessly connecting the intelligent terminal to the automated gas geochemical exploration equipment of the present invention, the collected data can be transmitted to the intelligent terminal for recording in real time, greatly improving the data recording efficiency.

[0058] In the prior art, the sampling and measurement process of the gas in the hole after drilling is divided into two stages. The first stage is to evacuate the hole to form a low pressure, so that the soil gas in the hole wall is released into the hole. In this stage, very little gas in the hole migrates to the sensor, so the sensor reading is low. The second stage is to relieve the negative pressure in the hole. The specific implementation method is usually to reverse the threaded drill to allow external air to enter the hole. At this time, the soil gas that entered the hole in the first stage is transported to the sensor, and the sensor reading is high. The equipment of the present invention realizes the automatic switching between the two stages because the equipment of the present invention includes two independent air paths. After being connected to the exploration institution and the dual-air-path drill bit, the first air path is the air intake path, and the second air path is the air outlet path. After the equipment is started, the air pump operates to pump air out of the hole, and the electric control air valve is in the closed state. At this time, a low pressure will be formed in the hole, and the soil gas will enter the hole, that is, stage one. The intelligent terminal can know whether the low pressure has reached the threshold value and the time for which the low pressure is maintained through the air pressure value feedback by the equipment (the standards for this threshold and the maintenance time can be customized according to the user's practical experience). After maintaining for a period of time, the intelligent terminal notifies the equipment to open the air valve to relieve the low pressure. At this time, the gas in the hole will enter the sensor container through the second air path and be detected by the sensor, that is, stage two. The conversion between the two stages in the sampling process of this equipment is completely controlled automatically by the program, and there is no longer a need for manual reverse operation of the threaded drill.

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

[0060] The firmware operation logic of the microcontroller is as Figure 3 shown, and mainly includes the following steps:

[0061] Step1. Start;

[0062] Step2. Start and initialize various modules, and control the air pump to stop and the air valve to close;

[0063] Step3. Receive Bluetooth instructions (such as from a smart terminal);

[0064] Step4. Determine whether a start sampling instruction is received? If yes, execute Step5; if no, return to Step3 to continue waiting for instructions;

[0065] Step5. The air pump runs and the air valve closes;

[0066] Step6. Read data such as sensors and positioning;

[0067] Step7. Update the data to the screen;

[0068] Step8. Send data via Bluetooth;

[0069] Step9. Receive Bluetooth instructions;

[0070] Step10. Determine whether an open air valve instruction is received? If yes, execute Step12; if no, execute Step11;

[0071] Step11. Determine whether a sampling completion instruction is received? If yes, execute Step13; if no, execute Step6;

[0072] Step12. Control the electronically controlled air valve to open;

[0073] Step13. Control the air pump to stop and the electronically controlled air valve to close;

[0074] Step14. End.

[0075] It can be seen that through the above software operation, the microcontroller can automatically complete the entire exploration process of the soil to be measured. During this process, it automatically realizes the collection of sensor data and positioning data and sends them to the smart terminal via Bluetooth, and the entire process does not require complex manual operations.

[0076] For the operating logic of the application software to automatically receive and record data on a smart terminal (such as a mobile phone or tablet computer), as Figure 4 shown, it mainly includes the following steps:

[0077] Step1. Start;

[0078] Step2. Connect to the microcontroller of the exploration agency of the above device via Bluetooth;

[0079] Step3. The user inputs the name of the sampling point;

[0080] Step4. Bluetooth sends a sampling start instruction to the microcontroller of the automated gas geochemical exploration equipment;

[0081] Step5. Bluetooth receives sensor and positioning data and writes it into a file;

[0082] Step6. Determine whether the electronically controlled gas valve of the automated gas geochemical exploration equipment has been opened? If yes, execute Step10; if not, execute Step7;

[0083] Step7. Determine whether the air pressure is lower than the threshold value? If yes, execute Step8, if not, execute Step5;

[0084] Step8. Determine whether the air pressure has been continuously lower than the threshold value for a period of time? If yes, execute Step9, if not, execute Step5;

[0085] Step9. Bluetooth sends an instruction to open the electronically controlled gas valve;

[0086] Step10. Determine whether the reading of the gas concentration sensor has passed the peak value for a period of time? If yes, execute Step11, if not, execute Step5;

[0087] Step11. Bluetooth sends a sampling completion instruction;

[0088] Step12. End.

[0089] When implementing the method embodiment, the firmware is written in C / C++ language, and the application of the intelligent terminal can be developed using TypeScript language based on the React Expo architecture. The display content of the embedded software on the device screen is as Figure 5 shown, and the sampling screenshot of the application of the intelligent terminal is as Figure 6 .

[0090] As can be seen from the above method embodiment, the present invention can realize the automatic switching of two stages of soil gas exploration, record the collected data in real time, and the data contains positioning information and sampling point information, converting the originally cumbersome steps that need to be manually operated into automated operations, improving the exploration work efficiency, and reducing the influence of personnel operation errors on the exploration data results.

[0091] It should be noted that according to the needs of implementation, each step / component described in this application can be split into more steps / components, or two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.

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

[0093] It should be understood that those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. An automated gas geochemical exploration device, characterized in that: include: A dual-gas-path drill bit comprises a drill bit, and the drill bit comprises a first gas path and a second gas path which are independent and run through the entire drill bit, the first gas path is an air inlet path, and the second gas path is an air outlet path; after the drill bit forms a hole in the soil to be tested, one end of the first gas path and one end of the second gas path are both placed in the hole; A survey mechanism, comprising a first survey channel, a second survey channel and a microcontroller; One end of the first survey passage is connected to the other end of the first gas passage, the other end of the first survey passage is connected to the external atmosphere, and an electric-controlled gas valve connected to the microcontroller is provided on the first survey passage; The second survey path includes a sensor container and an air pump, wherein a plurality of parallel sensors connected to the microcontroller are arranged in the sensor container, one end of the sensor container is communicated with the second air path, the other end of the sensor container is connected to the air pump, and the air pump is connected to the microcontroller, and the air pump is also connected to an external gas collection device; The microcontroller is wirelessly connected to an external intelligent terminal.

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

3. The automated gas geochemical exploration equipment according to claim 1, characterized in that: The automated gas geochemical exploration device also includes a display screen connected to the 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 electric-controlled air valve via a relay.

5. The automated gas geochemical exploration equipment according to claim 1, characterized in that: The microcontroller is connected to the external intelligent terminal via Bluetooth.

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

7. The automated gas geochemical exploration equipment according to any one of claims 1 to 6, characterized in that: The first air circuit includes a first air circuit joint and a first air pipe, wherein the first air pipe runs through the entire drill bit, one end of which is connected to the first air circuit joint, and the other end is placed in the soil to be tested when in use; the second air circuit is arranged in parallel with the first air circuit, and includes a second air circuit joint and a second air pipe, wherein the second air pipe runs through the entire drill bit, one end of which is connected to the second air circuit joint, and the other end is placed in the soil to be tested when in use.

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

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

10. A soil gas automatic measurement method, characterized in that: The method is based on the automated gas geochemical exploration equipment according to any one of claims 1 to 9, and specifically comprises the following steps: The dual-gas-path drill bit drills into the soil to be tested to form a hole; the gas geochemical exploration equipment is wirelessly connected to the smart terminal; After the survey mechanism is started, the air pump starts to operate and pumps air out of the hole through the second air path. The microcontroller controls the electric control air valve to be in a closed state, forming a low pressure in the hole. The gas in the soil to be measured enters the hole, and the air pressure value is collected through the sensor of the second survey path. The intelligent terminal obtains the collected air pressure value. When the air pressure value reaches the preset threshold and is maintained for the preset time, a control instruction to open the electric-controlled gas valve is sent to the microcontroller. After the electric-controlled gas valve is opened, air is introduced through the first gas path to relieve the low pressure. The gas in the hole enters the sensor container through the second gas path. Data is sensed by multiple parallel sensors and transmitted to the intelligent terminal through the microcontroller.

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