CN211426816U - Low-power consumption wireless seismic data recording device - Google Patents
Low-power consumption wireless seismic data recording device Download PDFInfo
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- CN211426816U CN211426816U CN202020045424.0U CN202020045424U CN211426816U CN 211426816 U CN211426816 U CN 211426816U CN 202020045424 U CN202020045424 U CN 202020045424U CN 211426816 U CN211426816 U CN 211426816U
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Abstract
The utility model relates to a seismic exploration technical field specifically says to a wireless seismic data recorder of low-power consumption. The device comprises a power supply module, an input protection circuit, a main controller, a signal conditioning module, an analog-to-digital conversion module, a storage module, a communication module and a GPS module; the power supply module supplies electric energy to the whole device; the input end of the input protection circuit is connected with the output end of the external detector; the signal conditioning module is connected with the input protection circuit and then carries out elimination of direct current bias, amplification and filtering on the input signal; the analog-to-digital conversion module is connected with the signal conditioning module and is used for converting the signal conditioned by the signal conditioning module and then receiving the signal by the main controller. The wireless seismic data recording device has the characteristics of high resolution, low power consumption and low cost, and overcomes the defects of high power consumption, high cost and the like of the traditional wireless seismic data recording device.
Description
Technical Field
The utility model relates to a seismic exploration technical field specifically says to a wireless seismic data recorder.
Background
Seismic exploration is one of the most effective means for oil and gas exploration. The concept of large-scale, high-density and wide-azimuth seismic exploration has received much attention in order to more accurately detect the location of oil in the earth formation. The wireless seismic data recording system is one of important parts of seismic exploration, can not only filter collected seismic signals, but also recover seismic data, and is important for seismic exploration equipment. The wired seismic data recording system has numerous cables, large laying workload and high exploration cost. Compared with a wired system, the wireless seismic data recording system has the characteristics of small volume, light weight, convenience in carrying, small laying workload, low exploration cost and the like, and becomes a hotspot for research in seismic exploration. Since wireless seismic data recording systems operate in the field environment and require constant acquisition over time. In order to meet the trend of seismic exploration towards large-scale, high-density and wide-azimuth development, a wireless seismic data recording system with low power consumption and low cost is needed, so that the development of large-scale, high-density and wide-azimuth seismic exploration is facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a wireless seismic data recording device of low-power consumption is provided, have high resolution, low-power consumption, low-cost characteristics, overcome traditional wireless seismic data recording device consumption big, with high costs not enough.
The utility model is realized in such a way that the wireless seismic data recording device with low power consumption comprises a power supply module, an input protection circuit, a main controller, a signal conditioning module, an analog-to-digital conversion module, a storage module, a communication module and a GPS module; the power supply module supplies electric energy to the whole device; the input end of the input protection circuit is connected with the output end of the external detector; the signal conditioning module is connected with the input protection circuit and then carries out elimination of direct current bias, amplification and filtering on the input signal; the analog-to-digital conversion module is connected with the signal conditioning module, and converts the signal conditioned by the signal conditioning module and then receives the signal by the main controller; the main controller selects a singlechip STM32F407VET6 which is produced by ST company and takes an ARM Cortex-M4 inner core as a base; the main controller is connected with a storage module, a communication module and a GPS module, and the analog-to-digital conversion module selects a CS5372 chip; the storage module selects an SD card with 32G capacity; the communication module completes the transmission of seismic data through a wireless WiFi module, and the WiFi module adopts an ESP8266 chip; the GPS module plays a role in synchronous time service in the acquisition process, the WiFi module is turned off when data transmission is not carried out, and the GPS module is turned off after positioning to reduce power consumption.
Furthermore, the power supply module comprises a charging/switching circuit, a switch and a DC-DC circuit, wherein the charging/switching circuit selects an LT3651 chip as a lithium battery charging control chip and is connected with a mains supply and a battery to complete the automatic switching of the power supply of the mains supply and the power supply of the battery; the switch controls the on-off of the power supply of the device; the DC-DC circuit adopts an LT8610EMSE chip, is connected to one end of the switch and performs voltage conversion when power supply is started.
Furthermore, the signal conditioning module comprises a DC offset elimination circuit, a primary amplifying circuit, a filter circuit and a secondary amplifying circuit; the received signal is firstly subjected to DC offset elimination through a DC offset elimination circuit, then a primary amplification circuit is carried out on weak seismic signals, then a filter circuit is used for eliminating noise caused by the circuit and the environment, so that the signal-to-noise ratio is improved, and finally the signal is amplified through a secondary amplification circuit.
Further, the elimination dc bias circuit selects the TL082 chip as a core device of the elimination dc bias circuit, and the TL082 chip is a bidirectional input operational amplifier.
Further, the first-stage amplifying circuit and the second-stage amplifying circuit select the AD620 chip through signals.
Furthermore, the filter circuit selects an LTC1569 chip as a core of the filter circuit.
Furthermore, the core of the analog-to-digital conversion circuit is a CS5372 chip as a sampling a/D converter, and the CS5372 chip is connected to a CS5376 chip digital filter to convert a 1-bit data stream output by the CS5372 chip into 24-bit data and filter noise signals outside the passband.
Compared with the prior art, the utility model, beneficial effect lies in: the utility model discloses a have the conditioning circuit who handles weak seismic signal specially, improved seismic signal acquisition SNR. The A/D conversion circuit with high dynamic range, low power consumption and high performance reduces the power consumption of the wireless seismic data recording device, and is beneficial to large-scale long-term seismic acquisition. The problems of large power consumption, high acquisition cost and the like of the conventional wireless seismic data recording device are solved.
Drawings
Fig. 1 is a general block diagram of a wireless seismic data recording device according to an embodiment of the present invention;
fig. 2 is a block diagram of a signal conditioning circuit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a dc offset cancellation circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an amplifying circuit provided in an embodiment of the present invention;
fig. 5 is a schematic diagram of a filter circuit provided in an embodiment of the present invention;
fig. 6 is a schematic diagram of an analog-to-digital conversion circuit according to an embodiment of the present invention;
fig. 7 is a chip diagram of the main controller STM32F407VET6 according to the embodiment of the present invention;
fig. 8 is a diagram of a WiFi module chip according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is 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 of the invention and are not intended to limit the invention.
Referring to fig. 1, the embodiment of the present invention provides a general block diagram of a wireless seismic data recording device, which includes a power supply module, an input protection circuit, a main controller, a signal conditioning module, an analog-to-digital conversion module, a storage module, a communication module, and a GPS module. The power supply module provides electric energy for the whole device; the input end of the input protection circuit is connected with the output end of the external detector; the signal conditioning module is connected with the input protection circuit and then carries out elimination of direct current bias, amplification and filtering on the input signal; the analog-to-digital conversion module is connected with the signal conditioning module, and converts the signal conditioned by the signal conditioning module and then receives the signal by the main controller; the main controller selects a singlechip STM32F407VET6 which is produced by ST company and takes ARMCortex-M4 inner core as a base; the main controller is connected with a storage module, a communication module and a GPS module. The power supply module adopts an LT3651 chip and an LT8610EMSE chip which are produced by Lingte company; the analog-to-digital conversion module adopts a CS5372 chip, has the characteristics of high dynamic range, low power consumption, high performance and the like, and is very suitable for seismic exploration; the storage module selects an SD card with 32G capacity; the communication module completes the transmission of seismic data through a wireless WiFi module, and the WiFi module adopts an ESP8266 chip; the GPS module plays a role in synchronous time service in the acquisition process. The STM 32-based main control center can efficiently coordinate the external function modules. The working process is as follows: the signal collected by the detector is amplified and filtered by the signal conditioning circuit, and then is subjected to A/D conversion by the high-precision analog-to-digital conversion module, and then the converted digital signal is stored in the SD card, and the GPS module plays a role in synchronous time service in the collection process. The WiFi module is used for data recovery. The input protection circuit protects the system in the whole process, and prevents the circuit from being damaged due to overlarge current and voltage.
The power supply module comprises a charging/switching circuit, a switch and a DC-DC circuit, wherein the charging/switching circuit selects an LT3651 chip which is a lithium battery charging control chip and is connected with a mains supply and a battery to finish the automatic switching of the power supply of the mains supply and the power supply of the battery; the switch controls the on-off of the power supply of the device; the DC-DC circuit adopts an LT8610EMSE chip, is connected to one end of the switch and performs voltage conversion when power supply is started.
Reference figure 2 is the embodiment of the utility model provides a signal conditioning circuit module block diagram, signal conditioning circuit are the important component part of wireless seismic data recorder, can directly influence the quality of gathering seismic signal. The circuit consists of a DC offset eliminating circuit, a primary amplifying circuit, a filter circuit and a secondary amplifying circuit. The electric signal output by the sensor contains direct current offset, and if the offset signal is directly amplified, the work of a lower-level amplifying circuit can be directly influenced, so that the signal is seriously distorted. Therefore, the direct current bias is eliminated firstly, then the weak seismic signals are subjected to primary amplification through a primary amplification circuit, the noise contained in the amplified seismic signals is also amplified, then the noise caused by the circuit and the environment is eliminated through a wave filtering circuit, so that the signal to noise ratio is improved, and finally the amplified seismic signals are amplified through a secondary amplification circuit.
Fig. 3 is a schematic diagram of a dc offset cancellation circuit according to an embodiment of the present invention. The utility model discloses select TL082 chip as the core device who eliminates direct current bias circuit, TL082 chip is two-way input fortune and puts, and the chip is inside to constitute by nonlinear device such as triode. The method has the characteristics of low power consumption, low signal distortion degree and the like.
Referring to fig. 4, the first-stage amplifying circuit and the second-stage amplifying circuit according to the embodiment of the present invention are schematic diagrams, and the function of this part is mainly to amplify the weak signal output by the sensor without distortion, so as to realize the control and display of the signal. The signal amplifier is the first step, and a critical step, of the detection system, and therefore must be made to receive and amplify the signal without distortion. Based on simple structure, the strong circuit design principle of interference immunity, the utility model discloses select AD620 as the chip is amplified to the back level. The AD620 has high precision, low noise, low power consumption, low bias voltage and low offset drift, so the AD620 is the best choice as an amplifying chip.
Referring to fig. 5, a schematic diagram of a filter circuit according to an embodiment of the present invention, the filter circuit is a function of selectively outputting an input signal. Its main function is to transmit signal in frequency range, and to attenuate and suppress other frequencies of signal, in order to enhance the dynamic range of detection system, and to eliminate the noise caused by environment and circuit itself as far as possible, so the filter circuit is added in the design of conditioning circuit. The utility model discloses well LTC1569 chip is filter circuit's core, and LTC1569 chip has linear phase place, root promotion cosine response and adjustable 10 th order low pass filter, according to the characteristics of seismic wave, chooses for use LTC1569 chip as filter circuit core device can obtain best effect.
Referring to fig. 6, the analog-to-digital conversion circuit schematic diagram of the embodiment of the present invention, the function of the analog-to-digital conversion circuit is to convert continuous analog signals into discrete digital signals, the core is a CS5372 chip, the number of the analog-to-digital conversion bits is 24 bits, and the analog-to-digital conversion circuit has the characteristics of high dynamic range, low power consumption and high performance, and the dynamic range can reach 121dB, and has extremely low total harmonic distortion and strong weak signal monitoring capability. The CS5372 chip is an oversampling a/D converter and therefore requires a digital filter to reduce the sampling frequency. By connecting a digital filter to an output end for filtering, the digital filter adopts a CS5376 chip, and can convert a 1-bit data stream output by the CS5372 chip into 24-bit data and filter noise signals outside a passband.
Referring to fig. 7, a chip diagram of the main controller STM32F407VET6 of the present invention is shown, where STM32F407VET6 has an adaptive real-time memory accelerator, has a 1M FLASH memory, contains a memory protection unit, and has a more flexible external static memory controller (FSMC) interface. The STM32F407VET6 has rich on-chip resources and high data processing speed, and is very suitable for processing and transmitting seismic signals.
The utility model provides a wiFi module's chip map is seen in the reference of figure 8, the utility model discloses an ESP8266 chip uses the serial ports to receive the seismic data that the singlechip forwarded, then transmits seismic data to data center through the wiFi link.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A wireless seismic data recording device with low power consumption is characterized by comprising a power supply module, an input protection circuit, a main controller, a signal conditioning module, an analog-to-digital conversion module, a storage module, a communication module and a GPS module; the power supply module supplies electric energy to the whole device; the input end of the input protection circuit is connected with the output end of the external detector; the signal conditioning module is connected with the input protection circuit and then carries out elimination of direct current bias, amplification and filtering on the input signal; the analog-to-digital conversion module is connected with the signal conditioning module, and converts the signal conditioned by the signal conditioning module and then receives the signal by the main controller; the main controller selects a singlechip STM32F407VET6 which is produced by ST company and takes an ARM Cortex-M4 inner core as a base; the main controller is connected with a storage module, a communication module and a GPS module, and the analog-to-digital conversion module selects a CS5372 chip; the storage module selects an SD card with 32G capacity; the communication module completes the transmission of seismic data through a wireless WiFi module, and the WiFi module adopts an ESP8266 chip; the GPS module plays a role in synchronous time service in the acquisition process.
2. The device according to claim 1, wherein the power supply module comprises a charging/switching circuit, a switch and a DC-DC circuit, the charging/switching circuit adopts an LT3651 chip, and the charging/switching circuit is a lithium battery charging control chip and is connected with a commercial power supply and a battery to complete automatic switching between the commercial power supply and the battery supply; the switch controls the on-off of the power supply of the device; the DC-DC circuit adopts an LT8610EMSE chip, is connected to one end of the switch and performs voltage conversion when power supply is started.
3. The apparatus of claim 1, wherein the signal conditioning module comprises a dc offset cancellation circuit, a primary amplification circuit, a filter circuit, and a secondary amplification circuit; the received signal is firstly subjected to DC offset elimination through a DC offset elimination circuit, then a primary amplification circuit is carried out on weak seismic signals, then a filter circuit is used for eliminating noise caused by the circuit and the environment, so that the signal-to-noise ratio is improved, and finally the signal is amplified through a secondary amplification circuit.
4. The apparatus of claim 3, wherein the DC offset cancellation circuit selects the TL082 chip as a core device of the DC offset cancellation circuit, the TL082 chip being a bi-directional input operational amplifier.
5. The apparatus of claim 3, wherein the first and second stages of amplification circuits signal select an AD620 chip.
6. The apparatus of claim 3, wherein the filter circuit uses an LTC1569 chip as a core of the filter circuit.
7. The device of claim 1, wherein the core of the analog-to-digital conversion circuit is a CS5372 chip as a sampling a/D converter, and the CS5372 chip is connected to a CS5376 chip digital filter to convert a 1-bit data stream output from the CS5372 chip into 24-bit data and filter noise signals outside the passband.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020045424.0U CN211426816U (en) | 2020-01-09 | 2020-01-09 | Low-power consumption wireless seismic data recording device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020045424.0U CN211426816U (en) | 2020-01-09 | 2020-01-09 | Low-power consumption wireless seismic data recording device |
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| CN211426816U true CN211426816U (en) | 2020-09-04 |
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| CN202020045424.0U Expired - Fee Related CN211426816U (en) | 2020-01-09 | 2020-01-09 | Low-power consumption wireless seismic data recording device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112379406A (en) * | 2020-12-09 | 2021-02-19 | 武汉捷探科技有限公司 | Microseism tester based on geological exploration |
| CN112907928A (en) * | 2021-01-26 | 2021-06-04 | 徐州徐工矿业机械有限公司 | Wireless synchronous acquisition and classification system for multiple signals of excavator |
-
2020
- 2020-01-09 CN CN202020045424.0U patent/CN211426816U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112379406A (en) * | 2020-12-09 | 2021-02-19 | 武汉捷探科技有限公司 | Microseism tester based on geological exploration |
| CN112907928A (en) * | 2021-01-26 | 2021-06-04 | 徐州徐工矿业机械有限公司 | Wireless synchronous acquisition and classification system for multiple signals of excavator |
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