Seismic exploration node instrument GNSS signal antenna external device

Abstract

The utility model discloses a kind of seismic exploration node instrument GNSS signal antenna external device, it is characterized in that it includes: node instrument station unit (1), GNSS external antenna pedestal (3), GNSS external rubber stick omnidirectional antenna (4), wherein: GNSS external antenna pedestal (3) is installed in the top of node instrument station unit (1) station body, GNSS external rubber stick omnidirectional antenna (4) is additionally installed on GNSS external antenna pedestal (3) and is tightened. By replacing the originally built-in GNSS ceramic antenna with external antenna, efficiency can be effectively improved, it is easy to stabilize lock star, ensure that node instrument stable time service.

Description

Technical Field

[0001] The present invention relates to the technical field of special detection devices, and in particular to an external GNSS signal antenna device for a seismic exploration node instrument. Background Technology

[0002] Seismic exploration, based on the principles of geology and physics, utilizes methods from electronics and information science to artificially induce crustal vibrations that generate elastic waves. These elastic waves propagate into the subsurface medium, and instruments record the vibrations at various points on the surface after the event, indirectly inferring underground geological structures and ultimately locating potential oil and gas traps. Seismic exploration methods are widely used in the general survey and exploration of oil, natural gas, and coalfields. During operation, seismic sources are deployed at the surface to generate and collect seismic wave information, while seismic detectors are buried at the surface to receive the vibration data.

[0003] The mainstream wired seismic instrument systems in international seismic exploration are represented by the 428XL and 508XT instruments manufactured by SERCEL of France. These systems hold a major market share both domestically and internationally. Wireless instrument systems, primarily consisting of wireless instruments and nodal points, are currently manufactured by numerous companies and mainly serve as an effective supplement to wired instruments, applied in complex water networks, cliffs, and densely populated urban areas.

[0004] With the further development of exploration technology and the deepening of exploration areas, clients are increasingly demanding low-cost exploration. Project construction areas are becoming larger, and the number of acquisition channels is increasing, while the cost per unit area is gradually decreasing. Previously, cabled instruments were used for acquisition within these areas, but with the increase in the number of channels, the failure rate of the arrays is also increasing, becoming a major bottleneck for efficient acquisition. Therefore, nodal instruments are finding increasingly diverse applications and represent a future trend for low-cost, high-efficiency acquisition.

[0005] In land seismic exploration, various complex areas are frequently encountered, such as low-lying plains with water networks, areas with crop vegetation, densely vegetated mountainous or forested areas, and work areas with complex industrial and agricultural relationships. Since nodal stations are equipped with built-in geophones, during construction, to improve the coupling quality of the nodal station's burial and ensure data reception quality, the nodal station is often buried in a pit and covered with a certain amount of loose soil. This also helps to prevent the nodal station from being easily identified and stolen. The consequence of this is that the nodal station's built-in GNSS receiver module takes a long time to receive and lock onto the GNSS signal. Especially after rain, if the station is flooded, the loss of the GNSS signal will cause the nodal station to automatically shut down, resulting in data loss.

[0006] According to research, all nodal instruments currently on the market use built-in GNSS modules and antennas. Over the past three years, our unit has used nodal instrument systems from three different manufacturers for construction work in the water network and densely populated urban areas of northern Jiangsu. In actual use, the nodal instruments frequently experience GNSS signal loss due to flooding caused by farmland irrigation or post-rain surface water. Furthermore, the instability of nodal instruments in densely populated urban areas, where weak GNSS signals prevent satellite lock-on, cannot be ignored.

[0007] Therefore, addressing the shortcomings of existing technologies to effectively guarantee the quality of seismic data acquisition, fundamentally reduce or eliminate GNSS signal problems, improve work efficiency, and significantly reduce labor intensity has become the direction of efforts for technicians in this field. Utility Model Content

[0008] This invention addresses the problems existing in the background technology by providing an external GNSS signal antenna device for seismic exploration nodal instruments. This device can effectively improve the GNSS signal reception capability of nodal instruments during field operations, ensure stable GNSS timing for nodal instruments, facilitate field operations, significantly expand the application range of existing nodal instruments, improve the integrity of seismic data, and thus effectively improve the quality of data acquisition.

[0009] Technical solution:

[0010] An external GNSS signal antenna device for a seismic exploration nodal instrument includes: a nodal instrument station unit, a GNSS external antenna base, and a GNSS external omnidirectional antenna. The GNSS external antenna base is installed on the top of the nodal instrument station unit, and the GNSS external omnidirectional antenna is attached to and tightened onto the GNSS external antenna base.

[0011] Preferably, it also includes a node station tail cone, which is set as an optional accessory at the bottom of the node station unit.

[0012] Specifically, the GNSS external omnidirectional antenna includes: the GNSS omnidirectional antenna body, the antenna plug located at the tail of the GNSS omnidirectional antenna body, the coaxial cable located in the center of the GNSS omnidirectional antenna body, the PCB circuit board located at the front of the GNSS omnidirectional antenna body, and the GNSS omnidirectional patch antenna soldered on the PCB circuit board.

[0013] The GNSS omnidirectional patch antenna is connected to the antenna plug via a coaxial cable, and then connected to the GNSS external antenna base.

[0014] Specifically, the GNSS omnidirectional patch antenna uses SMT surface mount technology.

[0015] Specifically, the coaxial cable is the RG series.

[0016] Preferably, the GNSS external antenna base and the GNSS external omnidirectional antenna use an SMA series interface or a BNC interface, and the interface is pin-type or hole-type.

[0017] Preferably, the GNSS external rubber rod omnidirectional antenna is cylindrical, with a square or rectangular cross-section.

[0018] Preferably, the GNSS external omnidirectional antenna is foldable or telescopic.

[0019] Preferably, the GNSS external omnidirectional antenna body is made of ABS engineering plastic or other types of materials; its color is black, gray or other colors.

[0020] As another implementation, the GNSS external antenna base is installed on the side of the node station unit body, and the GNSS external omnidirectional antenna is attached to the GNSS external antenna base and tightened; wherein, the GNSS external omnidirectional antenna is rotatable or foldable 90 degrees.

[0021] Beneficial effects of this utility model

[0022] A GNSS omnidirectional antenna, including an antenna base and antenna body, is added to the top of the nodal station unit. By replacing the original built-in GNSS ceramic antenna with an external antenna, efficiency can be effectively improved, satellite locking can be easily stabilized, and stable timing of the nodal station can be ensured. Under these conditions, field personnel can quickly complete the deployment and quality inspection of the nodal station, and the applicability of the nodal station can be further expanded: for example, it can be buried on the surface in low-lying plains and farmland areas, densely populated urban areas, or busy traffic areas, and appropriately covered with loose soil. As long as the height of the external antenna is sufficient, even if the nodal station is flooded, it will not cause GNSS timing failure, thus ensuring stable operation of the nodal station. This utility model can guarantee the quality of the station unit burial from the source, effectively improve the quality of the acquired seismic data, improve work efficiency, ensure that the acquired data will not be lost due to GNSS signal problems, and will not cause problems with existing nodal station acquisition technology or construction methods. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the external GNSS signal antenna device for the seismic exploration node instrument of this utility model.

[0024] Figure 2 This is a schematic diagram of the GNSS external glue rod omnidirectional antenna structure of this utility model. Detailed Implementation

[0025] The present invention will be further described below with reference to embodiments, but the scope of protection of the present invention is not limited thereto:

[0026] Combination Figure 1 An external GNSS signal antenna device for a seismic exploration nodal instrument includes: a nodal instrument station unit 1, a GNSS external antenna base 3, and a GNSS external omnidirectional antenna 4, wherein: the GNSS external antenna base 3 is installed on the top of the nodal instrument station unit 1, and the GNSS external omnidirectional antenna 4 is attached to the GNSS external antenna base 3 and tightened.

[0027] Preferably, it also includes a tail cone 2 for the node station, which is installed as an optional accessory at the bottom of the node station unit 1. Under normal construction conditions, if the node station unit 1 is buried on the ground, it is not necessary to install the tail cone 2. However, in surface conditions such as Gobi Desert or rocky terrain, the tail cone 2 is required to facilitate construction.

[0028] This external antenna device can effectively improve efficiency, facilitate stable satellite locking, and ensure stable GNSS timing.

[0029] Combination Figure 2 The GNSS external omnidirectional antenna 4 includes: a GNSS omnidirectional antenna body 6, an antenna plug 5 located at the tail of the GNSS omnidirectional antenna body 6, a coaxial cable 7 (in a preferred embodiment, the RG series standard is adopted) located in the center inside the GNSS omnidirectional antenna body 6, a PCB circuit board 8 located at the front end inside the GNSS omnidirectional antenna body 6, and a GNSS omnidirectional patch antenna 9 soldered on the PCB circuit board 8 (in a preferred embodiment, the omnidirectional patch antenna is soldered on the circuit board using SMT surface mount technology).

[0030] Wherein: the GNSS omnidirectional patch antenna 9 is connected to the antenna plug 5 via the coaxial cable 7, and then connected to the GNSS external antenna base 3 (in the preferred embodiment, the bottom of the GNSS external glue rod omnidirectional antenna 4 adopts an SMA-J type interface).

[0031] In another embodiment, the GNSS external antenna base 3 is installed on the side of the station body of the node instrument unit 1, and the GNSS external omnidirectional antenna 4 is attached to the GNSS external antenna base 3 and tightened; wherein, the GNSS external omnidirectional antenna 4 is rotatable or foldable by 90 degrees.

[0032] During the deployment process, first insert the GNSS external omnidirectional antenna 4 into the GNSS external antenna base 3 and tighten it. Then, bury the node station unit at its corresponding ground station location, ensuring it is "flat, stable, upright, straight, and tight." Open the handheld terminal, select and run the corresponding APP software to perform a power-on test on the node station unit, and check the relevant parameters. If the test passes, the node station deployment is complete.

[0033] It should be noted that those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by instructing related hardware through circuit settings. These circuit settings can be implemented using a microcontroller or other similar integrated chips, which is existing technology. The core utility model lies in the overall structural layout of the system; local control methods can be implemented through programming using existing technology; and local module connections can be achieved using existing technology.

[0034] Specifically, in this application, the seismic exploration node instrument and its APP software are existing technologies. The innovation of this utility model lies in the design of its external antenna device, which ensures the quality of station unit burial from the source, effectively improves the quality of the collected seismic data, improves work efficiency, ensures that the collected data will not be lost due to GNSS signal problems, and will not cause trouble for existing node instrument acquisition technology or construction methods.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An external GNSS signal antenna device for seismic exploration nodal instruments, characterized in that... It includes: The node station unit (1), the GNSS external antenna base (3), and the GNSS external glue rod omnidirectional antenna (4) are as follows: the GNSS external antenna base (3) is installed on the top of the node station unit (1), and the GNSS external glue rod omnidirectional antenna (4) is installed on the GNSS external antenna base (3) and tightened.

2. The apparatus according to claim 1, characterized in that... It also includes a node station tail cone (2), which is set as an optional accessory at the bottom of the node station unit (1).

3. The apparatus according to claim 1, characterized in that... The GNSS external omnidirectional antenna (4) includes: a GNSS omnidirectional antenna body (6), an antenna plug (5) located at the tail of the GNSS omnidirectional antenna body (6), a coaxial cable (7) located in the center of the GNSS omnidirectional antenna body (6), a PCB circuit board (8) located at the front end of the GNSS omnidirectional antenna body (6), and a GNSS omnidirectional patch antenna (9) soldered on the PCB circuit board (8). Among them, the GNSS omnidirectional patch antenna (9) is connected to the antenna plug (5) via a coaxial cable (7), and then connected to the GNSS external antenna base (3).

4. The apparatus according to claim 3, characterized in that... The GNSS omnidirectional patch antenna (9) adopts SMT surface mount technology.

5. The apparatus according to claim 3, characterized in that... The coaxial cable (7) is of the RG series.

6. The apparatus according to claim 1, characterized in that... The GNSS external antenna base (3) and the GNSS external omnidirectional antenna (4) use an SMA series interface or a BNC interface, and the interface is pin-type or hole-type.

7. The apparatus according to claim 1, characterized in that... The GNSS external rubber rod omnidirectional antenna (4) is cylindrical, and its cross-section is square or rectangular.

8. The apparatus according to claim 1, characterized in that... The GNSS external rubber rod omnidirectional antenna (4) is either foldable or telescopic.

9. The apparatus according to claim 1, characterized in that... The GNSS external omnidirectional antenna (4) has an omnidirectional antenna body (6) made of ABS engineering plastic; its color is black or gray.

10. The apparatus according to claim 1, characterized in that... The GNSS external antenna base (3) is installed on the side of the station body of the node instrument unit (1), and the GNSS external rubber rod omnidirectional antenna (4) is installed on the GNSS external antenna base (3) and tightened; wherein, the GNSS external rubber rod omnidirectional antenna (4) is rotatable or foldable by 90 degrees.

Images