An application method based on intelligent wireless seismic detector reconfigurable antenna

Abstract

The application discloses an application method of a reconfigurable antenna based on an intelligent wireless seismic detector, which comprises the following steps: setting communication module transmitter configuration information, and reconfiguring a directional antenna to be designed to work at the frequency; setting communication module receiver configuration information, and checking the validity of a data packet by a program using a checksum every time a gateway receives the data packet from a node; if valid, the program extracts a 64-bit source address and data from the frame; programming a microcontroller to select a direction with a higher received signal strength indicator level; the microcontroller stores the RSSI values of each gateway in all modes and compares them to select the gateway related to the maximum RSSI value; setting the address of the selected gateway, and the node is ready for transmission; converting the seismic wave detected by the sensor node of the wireless seismic detector into an analog voltage signal; then, the analog voltage signal is processed and transmitted to the communication module for real-time transmission to the gateway.

Description

Technical Field

[0001] This invention relates to the field of industrial Internet of Things (IoT) technology, and specifically to an application method based on a reconfigurable antenna for an intelligent wireless seismic detector. Background Technology

[0002] Active seismic survey technology, used for exploring oil and gas reservoirs, is widely applied in fields such as oil and gas, mineral exploration, and geological disaster prediction. Seismic acquisition has evolved with the trends of high density, high sampling rate, and deep exploration, progressing from wired exploration to cableless portable seismic acquisition nodes. Each node uses ground-based seismic detector sensors, typically arranged in an array, to cover the entire exploration area and detect the reflected components of these seismic waves.

[0003] Wired systems provide reliable, uninterrupted operation and high-resolution seismic data transmission, but their deployment and maintenance costs increase significantly as the scale and density of surveys expand.

[0004] Furthermore, the complex environments of some survey areas make wired systems both expensive and impractical. Therefore, the next generation of high-density acquisition systems will inevitably evolve towards flexible platforms using wireless technologies. Summary of the Invention

[0005] The purpose of this invention is to provide an application method based on a reconfigurable antenna for an intelligent wireless seismic detector, in order to solve the problems existing in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An application method based on a reconfigurable antenna for a smart wireless seismic detector includes the following steps:

[0008] Configure the transmitter information of the communication module, and reconfigure the directional antenna to operate at this frequency and have a matching bandwidth to support this transmission rate;

[0009] Configure the receiver information of the communication module. Each time the receiving gateway receives a data packet from the node, the program uses a checksum to check the validity of the data packet; if valid, the program extracts the 64-bit source address and data from the frame.

[0010] The microcontroller is programmed to select a direction with a higher level of received signal strength indicator, and the reconfigurable antenna is switched to that direction.

[0011] The microcontroller stores the RSSI value of each gateway in all modes and compares them to select the gateway associated with the maximum RSSI value; it then sets the address of the selected gateway and prepares the node for transmission.

[0012] The seismic waves detected by the sensor nodes of the wireless seismograph are converted into analog voltage signals; then the analog voltage signals are processed and transmitted to the communication module for real-time transmission to the gateway.

[0013] In some embodiments, processing the analog voltage signal and transmitting it to the communication module for real-time transmission to the gateway includes: filtering and amplifying the analog voltage signal to remove unwanted signal components caused by background vibration and other noise sources.

[0014] The ADC module digitally samples the analog signal at a resolution of 24 bits per sample and a sampling rate of 500 samples per second.

[0015] Digital data is processed in a single-board computer and then passed to a communication module for real-time transmission to a gateway.

[0016] In some embodiments, the method of processing digital data in a single-board computer involves adding a header to the single-board computer that includes the acquisition time of each sample, and then saving the data to the onboard memory within the single-board computer.

[0017] In some embodiments, the wireless seismic detector employs the SM-24 seismic detector model, allowing for a sampling rate of 500 samples / second with a sampling interval of 2 meters per second and a bandwidth covering the frequency range of interest (10–100 Hz) used in active seismic surveys. The sensitivity of the seismic detector used is 28.8 V / m / s.

[0018] In some embodiments, the filtering and amplification of the analog voltage signal is an analog circuit consisting of a first low-pass filter, an amplifier, and a second low-pass filter. The first low-pass filter is used to filter any frequencies detected by the sensors of the wireless seismograph that are outside the frequency range of interest. The amplifier provides the required high voltage gain to prepare the data sampled by the ADC at high resolution. The final filtering stage of the second low-pass filter filters out any noise introduced at higher frequencies during the amplification process and ensures a smoother attenuation of the low-pass response of the entire circuit.

[0019] In some embodiments, the digital sampling and processing of digital data will employ a 24-bit ADC; each time a sample is sampled and digitized, a timestamp is added to save the sampling time. After the data received from the ADC is timestamped, a microcomputer is used to collect samples and perform two basic functions in parallel: saving the collected sample data; the data is saved as a CSV file to the onboard SD card and sent to the communication module of the sensor node for real-time wireless transmission to the gateway.

[0020] The application method based on a reconfigurable antenna for a smart wireless seismic detector provided in this application has the following beneficial effects, including but not limited to:

[0021] This invention employs an application method based on a reconfigurable antenna for a smart wireless seismic detector, which can successfully capture seismic data from the seismic detector sensor and transmit it wirelessly to the gateway unit in real time. The communication range between the sensor node and the gateway is significantly improved by 25%, and compared with similar systems using monopole antennas, this enhanced communication range significantly improves the communication area coverage of the gateway by 56%. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the wireless seismic detector of the present invention.

[0023] Figure 2 This is a schematic diagram of the seismic detector acquisition process of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application are described in more detail. The described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] The following will combine Figure 1-2 This application provides a detailed description of an application method based on a reconfigurable antenna for a smart wireless seismic detector, as described in the embodiments of this application. It is worth noting that the following embodiments are merely illustrative of this application and do not constitute a limitation thereof.

[0026] like Figure 1-2 As shown, an application method based on a reconfigurable antenna of an intelligent wireless seismic detector is implemented based on a wireless seismic detector sensing system, including a wireless detector sensor node and a gateway unit, wherein the wireless detector sensor node includes a data acquisition module and a communication module.

[0027] Configure the transmitter information of the communication module, and reconfigure the directional antenna to operate at this frequency and have a matching bandwidth to support this transmission rate;

[0028] Configure the receiver information of the communication module. Each time the receiving gateway receives a data packet from the node, the program uses a checksum to check the validity of the data packet; if valid, the program extracts the 64-bit source address and data from the frame.

[0029] The microcontroller is programmed to select a direction with a higher level of received signal strength indicator, and the reconfigurable antenna is switched to that direction.

[0030] The microcontroller stores the RSSI value of each gateway in all modes and compares them to select the gateway associated with the maximum RSSI value; it then sets the address of the selected gateway and prepares the node for transmission.

[0031] The seismic waves detected by the sensor nodes of the wireless seismograph are converted into analog voltage signals; then the analog voltage signals are processed and transmitted to the communication module for real-time transmission to the gateway.

[0032] The process of processing the analog voltage signal and transmitting it to the communication module for real-time transmission to the gateway includes: filtering and amplifying the analog voltage signal to remove unwanted signal components caused by background vibration and other noise sources.

[0033] The ADC module digitally samples the analog signal at a resolution of 24 bits per sample and a sampling rate of 500 samples per second.

[0034] Digital data is processed in a single-board computer and then passed to a communication module for real-time transmission to a gateway.

[0035] In some embodiments, the method of processing digital data in a single-board computer involves adding a header to the single-board computer that includes the acquisition time of each sample, and then saving the data to the onboard memory within the single-board computer.

[0036] In some embodiments, the wireless seismic detector employs the SM-24 seismic detector model, allowing for a sampling rate of 500 samples / second with a sampling interval of 2 meters per second and a bandwidth covering the frequency range of interest (10–100 Hz) used in active seismic surveys. The sensitivity of the seismic detector used is 28.8 V / m / s.

[0037] In some embodiments, the filtering and amplification of the analog voltage signal is an analog circuit consisting of a first low-pass filter, an amplifier, and a second low-pass filter. The first low-pass filter filters out any frequencies detected by the wireless seismograph's sensors that are outside the range of interest; therefore, it is designed with a theoretically ideal cutoff frequency of approximately 150 Hz. The amplifier provides the required high voltage gain to prepare the data sampled at high resolution by the ADC; the second low-pass filter, in its final filtering stage, filters out any noise introduced at higher frequencies during amplification and ensures a smoother attenuation of the low-pass response throughout the circuit.

[0038] In some embodiments, the digital sampling and processing of digital data will employ a 24-bit ADC; this is because it is capable of distinguishing 224 different voltage levels within a narrow voltage range of 0 to 5 volts, meaning each level represents approximately 0.3 μV; meeting the high-resolution requirements of seismic exploration. Each time a sample is sampled and digitized, a timestamp is added to record the sampling time, which is precisely the key information needed for later data processing and proper interpretation. After the data received from the ADC is timestamped, a microcomputer is used to perform two basic functions in parallel: saving the data as a CSV file to an onboard SD card and sending the data to the sensor node's communication module for real-time wireless transmission to the gateway.

[0039] The gateway uses a Raspberry Pi single-board computer, a small and low-cost computer. A Raspberry Pi 2-B model is used because it offers good power efficiency compared to other models and provides compatibility with high-precision analog-to-digital (ADC) modules.

[0040] The wireless communication module employs an XBee RF module and an Arduino microcontroller to control antenna reconfigurability and XBee module operation in API mode. Operating at 2.4 GHz, the module is compatible with various wireless systems, supports reasonable data rates, low power consumption, and wide coverage, and can wirelessly transmit high-resolution data from XBee to the gateway.

[0041] The antenna needs to be able to support the carrier frequency and provide sufficient bandwidth for the required data rate, with a matching bandwidth of approximately 200MHz.

[0042] A wireless seismic detector was placed in a box of sand, while a gateway connected to a laptop plotted the received results in real time. The detector was excited by repeatedly striking (by hand) a table placed on top of the system with varying forces; the data was received wirelessly at the gateway, with different forces producing different amplitudes.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An application method based on intelligent wireless seismic geophone reconfigurable antenna, characterized in that, It comprises the following steps: Setting the transmitter configuration information of the communication module; Setting the receiver configuration information of the communication module, each time the gateway receives a data packet from the node, the program checks the validity of the data packet using the checksum; if valid, the program extracts the 64-bit source address and data from the frame; The microcontroller is programmed to select the direction with the highest received signal strength indicator level and switch the reconfigurable antenna to that direction; The microcontroller stores the RSSI values of each gateway in all modes and compares them to select the gateway related to the maximum RSSI value; Setting the address of the selected gateway, the node is ready for transmission; The sensor node of the wireless seismic detector converts the seismic wave detected by the sensor node into an analog voltage signal; then the analog voltage signal is processed and transmitted to the communication module for real-time transmission to the gateway.

2. The application method of the reconfigurable antenna based on the intelligent wireless seismic detector according to claim 1, characterized in that, The processing and transmission of the analog voltage signal to the communication module for real-time transmission to the gateway includes filtering and amplifying the analog voltage signal to remove unwanted signal components caused by background vibration and other noise sources; The ADC module digitally samples the analog signal at a resolution of 24 bits per sample at a sampling rate of 500 samples per second; The digital data is processed in the single-board computer and then transmitted to the communication module for real-time transmission to the gateway.

3. The application method of the reconfigurable antenna based on the intelligent wireless seismic sensor according to claim 2, characterized in that, The method of processing digital data in the single-board computer is to add a header in the single-board computer, which includes the acquisition time of each sample, and then save the data to the on-board memory in the single-board computer.

4. The application method of the reconfigurable antenna based on the intelligent wireless seismic sensor according to claim 1, characterized in that, The wireless seismic detector uses the SM-24 seismic detector model, which allows a sampling interval of 2 meters sec and a resolution of 24 bits per sample, resulting in a sampling rate of 500 samples / sec every 2 meters sec and a bandwidth covering the frequency range of interest (10-100 Hz) used in active seismic exploration. The sensitivity of the seismic detector used is 28.8 V / m / s.

5. The application method of the reconfigurable antenna based on the intelligent wireless seismic sensor according to claim 1, characterized in that, The filtering and amplification of the analog voltage signal is an analog circuit composed of a first low-pass filter, an amplifier and a second low-pass filter, the first low-pass filter is used to filter any frequency detected by the sensor of the wireless seismic detector that is outside the frequency range of interest; the amplifier provides the required high voltage gain to prepare the data for sampling by the ADC at high resolution; The second low-pass filter filters out any noise introduced during amplification at higher frequencies in the last filtering stage and ensures a smoother attenuation of the low-pass response of the entire circuit.

6. The application method of the reconfigurable antenna based on the intelligent wireless seismic sensor according to claim 2, characterized in that, The digital sampling and processing of digital data will use a 24-bit ADC; each time a sample is sampled and digitized, a timestamp will be added to save the sampling time, after the data received from the ADC is marked with a timestamp, the microcomputer is used to collect samples and perform two basic functions of saving collected sample data in parallel; save the data as a CSV file to the on-board SD card and send the data to the communication module of the sensor node for real-time wireless transmission to the gateway.

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