[0024] Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
[0025] The distributed high-precision seismic signal acquisition device for hybrid telemetry seismic exploration is connected to the left and right ends of the base 4 with data transmission cables 3 respectively. 6. The space inside the protective shell 6 and above the base 4 is the collection board cabin 2, the collection module is placed in the collection board cabin 2, and the upper middle part of the protective shell 6 is formed with a detector input plug 1.
[0026] The acquisition module is connected by the main processor 15 to the left communication feed module 10 , the right communication feed module 11 , the signal generator module 12 and the data acquisition module 13 respectively. The main processor 15 is connected with the power management module 14 It is formed by connecting with the left communication feed module 10 and the right communication feed module 11 respectively.
[0027] The acquisition method of a distributed high-precision seismic signal acquisition device for hybrid telemetry seismic exploration includes the following steps:
[0028] A. The distributed high-precision seismic signal acquisition devices 7 are sequentially connected to each other through the data transmission cable 3 and the aerial plug to form a data acquisition link;
[0029] B. The host computer sends a power switch command to the data link. After the left communication feed module 10 or the right communication feed module 11 detects the coupled voltage on the data transmission cable 3, the external power supply is connected to the external power supply through the power management module 14. Convert into working voltage, start CPU main processor 15;
[0030] C. The host computer sends a call station instruction to the data link, and transmits the instruction to the CPU main processor 15 through the data transmission cable 3 and the left communication feed module 10 or the right communication feed module 11, and the CPU main processing The device 15 collects the physical information of the current acquisition module, including the serial number and logical serial number, encodes it, and uploads it to the data link. Coding of high-precision seismic signal acquisition device 7;
[0031] D. The upper computer sends a data acquisition instruction to the data link, and transmits it to all distributed high-precision seismic signal acquisition by broadcasting through the data transmission cable 3, the left communication feed module 10 or the right communication feed module 11 In the CPU main processor 15 in the device 7, after receiving the instruction, the CPU main processor 15 immediately starts the low-speed synchronous head detection mode, and when the synchronous communication in the entire data link is successfully established, the data acquisition module 13 is started, and the The collected data is uploaded to the host computer in real time in the form of data stream;
[0032] E. When the host computer directly sends the data collected by the data collection module 13 and the signal generator module 12 to the communication port and uploads it to the data link, the self-checking of the collection device is completed;
[0033] F. The host computer sends a power-off command to the data link, the left communication feed module 10 or the right communication feed module 11 cannot detect the coupling voltage on the data transmission cable 3, and the CPU main processor 15 has no working power , all the distributed high-precision seismic signal acquisition devices 7 on the data link are in a standby state.
[0034] like image 3 As shown, the CPU main processor 15 makes full use of the high-speed, multi-interface and other features of the STM32F03 chip to realize the scheduling and control of the entire system, and complete functions such as data collection, system self-checking, and data transmission.
[0035] The CPU main processor 15 constructs a power supply system together with the power supply module 14, the left communication feed module 10 and the right power feed module 11, and is responsible for providing the required power for the entire collection device;
[0036] The CPU main processor 15 and the left communication feed module 14 are constructed as a left data communication system, responsible for receiving control instructions and data transmission;
[0037] The CPU main processor 15 and the right communication feed module 15 are constructed into a right data communication system, responsible for receiving control instructions and data transmission;
[0038] The CPU main processor 15 and the signal generator module 12 are constructed as a system self-checking system, responsible for generating the signal sources required in the system self-checking process;
[0039] The CPU main processor 15 and the data acquisition module 13 are constructed to form a data acquisition system, which is responsible for high-precision acquisition of seismic signals.
[0040] The acquisition method of a distributed high-precision seismic signal acquisition device for hybrid telemetry seismic exploration includes the following steps:
[0041] A. The distributed high-precision seismic signal acquisition devices 7 are connected to each other through data transmission cables 3 and aerial plugs in turn to form a data acquisition link, and each distributed high-precision seismic signal acquisition device 7 is connected to the geophone 9 through a cable 8 , build a multi-channel seismic data acquisition link, which can connect more than one or even 192 distributed high-precision seismic signal acquisition devices 7, such as figure 2 shown.
[0042] B. The host computer sends a power switch instruction to the data link, and the left communication feed module 10 or the right communication feed module 11 in the distributed high-precision seismic signal data acquisition device 7 detects the coupling on the data transmission cable 3. After the voltage, the external power is converted into a working voltage through the power management module 14, and the program preloaded on the CPU main processor 15 is started. At the same time, the coupled voltage is directly sent to the communication feeder module 11 or 10 on the other side by the power management module 14, and the voltage is directly coupled to the data transmission cable 3, which is the subsequent distributed high-precision seismic signal data acquisition device 7 Provide power. All the acquisition devices on the data acquisition link adopt the above-mentioned methods in turn to realize the startup of the system.
[0043] C. The host computer sends a call station command to the data link, and transmits the command to the CPU main processor 15 through the data transmission cable 3 and the left communication feed module 10 or the right communication feed module 11. The processor 15 collects the physical information of the current acquisition module, including the serial number and logical serial number, and performs coding processing. The CPU main processor 15 sends the call station instruction to the data link through the left communication feed module 10 or the right communication feed module 11, so as to realize all distributed high-precision seismic signal acquisition devices 7 on the acquisition link. Call station operation. After the host computer decodes all the received data, it forms the logical serial numbers of all the acquisition devices 7 on the data acquisition link, and provides control parameters for the next data acquisition.
[0044] D. The upper computer sends a data acquisition instruction to the data link, and transmits it to all distributed high-precision seismic signal acquisition by broadcasting through the data transmission cable 3, the left communication feed module 10 or the right communication feed module 11 In the CPU main processor 15 in the device 7 . After the CPU main processor 15 receives the instruction, it immediately starts the low-speed synchronous head detection mode. When the synchronous communication in the entire data link is successfully established, it starts the DMA communication mode of the high-speed STM32F103 chip and the data acquisition module 13, and the collected data is directly It is sent to the communication port and uploaded to the data link, forming a continuous data stream formed by real-time acquisition of data by all acquisition devices. The host computer receives the data stream in real time and completes the acquisition of seismic data.
[0045] E. The host computer sends a self-checking acquisition instruction to the data link, and transmits it to the CPU in all acquisition devices 7 by broadcasting through the data transmission cable 3, the left communication feed module 10, and the right communication feed module 11 in the main processor. After the CPU main processor 15 receives the instruction, it immediately starts the low-speed synchronous head detection mode. When the synchronous communication in the entire data link is successfully established, it starts the DMA communication mode of the high-speed STM32F103 chip, the data acquisition module 13 and the signal generator module. 12 Send the collected data directly to the communication port and upload it to the data link, forming a continuous data stream formed by real-time data collection by all collection devices. The host computer receives the data stream in real time and completes the self-checking of the acquisition device.
[0046] F. The host computer sends a power-off command to the data link, the left communication feed module 10 or the right communication feed module 11 cannot detect the coupling voltage on the data transmission cable 3, and the CPU main processor 15 has no working power , all the distributed high-precision seismic signal acquisition devices 7 on the data link are in a standby state.
