GNSS receiver capable of improving surveying and mapping precision

Abstract

The invention relates to the technical field of surveying and mapping, in particular to a GNSS (Global Navigation Satellite System) receiver for improving surveying and mapping precision. Comprising a receiver body and centering rods, a self-balancing mechanism is fixed in the receiver body, connecting pieces are fixed to the two sides of the self-balancing mechanism respectively, the connecting pieces are rotatably connected into the two side walls of the receiver body, and the top ends of the centering rods are detachably connected with the connecting pieces respectively; the bottom center of the receiver body is longitudinally provided with a laser orientation instrument. The measurement process of a traditional GNSS receiver is optimized through the design of a self-balancing mechanism and multiple connecting pieces, manual leveling operation steps are reduced through the self-balancing characteristic of the GNSS receiver, and the operation preparation time can be shortened; the multi-point fixing mode of the rotatable connecting pieces on the two sides enhances the bonding strength of the equipment and the centering rod, and reduces the measurement error caused by mechanical looseness.

Description

Technical Field

[0001] The present invention relates to the field of surveying and mapping technology, and in particular to a GNSS receiver for improving surveying and mapping accuracy. Background Art

[0002] With the rapid development of modern surveying and mapping technology, GNSS receivers have become an indispensable tool in surveying and mapping projects. GNSS technology, with its high efficiency and minimal labor requirements, has gradually replaced traditional total station surveying methods in various engineering surveying, topographic surveying, and construction stakeout tasks. In particular, in the field of construction stakeout, GNSS receivers combined with AR technology have enabled visual stakeout capabilities, allowing a single operator and surveyor to complete the task, significantly improving operational efficiency. However, existing GNSS stakeout technology still faces the challenge of insufficient accuracy.

[0003] Currently, GNSS receivers commonly use AR layout technology, which displays ground points in real time via cameras. However, the large size of the marker icons on the handheld screen leads to significant errors when marking points, making it difficult to meet the requirements of high-precision surveying and mapping tasks. Meanwhile, while traditional plumb-pole measurement methods offer high accuracy, they require repeated adjustments to the level, making them cumbersome and inefficient. This conflict between efficiency and accuracy has hindered the further development of surveying and mapping. Furthermore, the traditional connection method between GNSS receivers and plumb-pole systems is limited, making them prone to instability during use, further impacting measurement accuracy. These technical bottlenecks urgently need to be addressed through structural optimization and innovative design. Summary of the Invention

[0004] The present invention aims to solve the above problems, thereby providing a self-balancing GNSS receiver with improved surveying and mapping accuracy.

[0005] The present invention solves the above problems by adopting the following technical solutions: A GNSS receiver for improving surveying and mapping accuracy includes a receiver body and a centering rod. A self-balancing mechanism is fixed inside the receiver body. Connectors are fixed on both sides of the self-balancing mechanism. The connectors are rotatably connected to the two side walls of the receiver body. The top end of the centering rod is detachably connected to the connectors. A laser pointer is provided longitudinally at the center of the bottom of the receiver body.

[0006] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features: The self-balancing mechanism and multi-connector design optimize the measurement process of traditional GNSS receivers. Its self-balancing feature reduces the number of manual leveling steps and helps shorten job preparation time. The multi-point fixation method of the rotatable connectors on both sides enhances the bonding strength between the equipment and the centering pole, reducing measurement errors caused by mechanical looseness. The laser pointer set at the bottom center realizes the coordinated positioning of physical markers and AR displays, reducing the visual errors caused by relying solely on screen icons for layout. This structural design improves the overall stability of the system through hardware optimization while maintaining the high efficiency advantages of GNSS technology, thereby achieving a synergistic improvement in measurement accuracy and operational convenience.

[0007] Preferably, a further technical solution of the present invention is: Furthermore, the self-balancing mechanism includes a balancing platform fixed in the receiver body, a two-degree-of-freedom gyroscope is arranged in the middle of the balancing platform, and motors connected to the gyroscope control are arranged on both sides of the balancing platform. The output ends of the motors are respectively connected to the connecting parts. The self-balancing mechanism adopts a two-degree-of-freedom gyroscope and motor linkage design, which reduces human intervention by dynamically adjusting the posture of the balancing platform and can still maintain a stable measurement state under complex terrain conditions; the motor output ends on both sides of the balancing platform directly drive the connecting parts to form a closed-loop control system, which effectively suppresses the influence of external vibration on measurement accuracy.

[0008] Furthermore, the connecting part includes a cylindrical outer sleeve, which is rotatably connected to the side wall of the receiver body, the inner end of the outer sleeve is fixed to the output end of the motor, and a positioning groove is provided on the outer side of the outer sleeve. The combined structure of the cylindrical outer sleeve and the positioning groove provides a dual positioning reference for the centering rod. Its rotating connection characteristics allow the receiver body to adaptively adjust within a certain angle range, while preventing unexpected displacement through mechanical interlocking; the rigid connection between the inner end of the outer sleeve and the motor ensures power transmission efficiency and avoids the gap error of the traditional hinged structure.

[0009] Furthermore, two support rods are arranged in parallel on the top of the centering rod, and cross-shaped fixing keys are provided on opposite sides of the end of the support rod. The shape of the positioning groove on the outer sleeve is adapted to the fixing key. The cross-shaped fixing key on the top of the centering rod forms a geometric constraint with the positioning groove, which not only ensures quick disassembly and assembly but also provides a circumferential limiting function. Compared with a single threaded connection method, it is more conducive to rapid deployment in the field; the parallel support rod design disperses the force on the rod body and reduces the risk of deformation caused by a single point connection.

[0010] Furthermore, the function buttons of the receiver body are located on the side wall between the two connectors. The function buttons are concentrated in the center area between the two connectors, which meets ergonomic operation requirements and avoids the destruction of device balance due to the dispersion of buttons.

[0011] Furthermore, a level bubble gauge is provided on the side wall of the receiver body and located between the two connecting parts, and the rotation angle of the centering rod is observed by the level bubble gauge to prevent the receiver body from losing balance due to the misadjustment of the centering rod angle.

[0012] Furthermore, a counterweight is provided inside the receiver body, which forms a composite stabilization system in conjunction with the self-balancing mechanism, significantly improving the anti-disturbance capability in strong wind environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the stereoscopic main view structure of the receiver body according to an embodiment of the present invention; Figure 2 Schematic diagram of a three-dimensional side view of the receiver body according to an embodiment of the present invention; Figure 3 This is a structural diagram of a centering rod according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the embodiment of the present invention when it is working; The following are marked in the figure: receiver body 1, centering rod 2, balancing platform 3, gyroscope 4, motor 5, outer cover 6, positioning slot 7, fixing key 8, and level bubble meter 9. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0015] A GNSS receiver for improving surveying and mapping accuracy includes a receiver body 1 and a centering rod 2. A self-balancing mechanism is fixed inside the receiver body 1. Connectors are fixed on both sides of the self-balancing mechanism. The connectors are rotatably connected to the side walls of the receiver body 1. The top of the centering rod 2 is detachably connected to the connectors. A laser pointer is longitudinally provided at the bottom center of the receiver body 1. The laser pointer projects a visible laser beam downward along the vertical axis of the receiver body 1. The laser beam maintains a coaxial relationship with the phase center of the GNSS antenna.

[0016] Furthermore, the self-balancing mechanism includes a balancing platform 3 fixed in the receiver body 1, a two-degree-of-freedom gyroscope 4 is arranged in the middle of the balancing platform 3, and motors 5 connected to the gyroscope 4 are arranged on both sides of the balancing platform 3. The output ends of the motors 5 are respectively connected to the connecting parts. The gyroscope 4 detects the tilt angle of the receiver body 1 in real time. When the tilt angle exceeds the set threshold, the motor 5 drives the connecting parts to perform reverse compensation to keep the balancing platform 3 in a horizontal state. The self-balancing mechanism adopts a linkage design of the two-degree-of-freedom gyroscope 4 and the motor 5. By dynamically adjusting the posture of the balancing platform 3, manual intervention is reduced, and a stable measurement state can be maintained under complex terrain conditions; the output ends of the motors 5 on both sides of the balancing platform 3 directly drive the connecting parts to form a closed-loop control system, which effectively suppresses the influence of external vibrations on measurement accuracy.

[0017] Furthermore, the connecting part includes a cylindrical outer sleeve 6, which is rotatably connected to the side wall of the receiver body 1, the inner end of the outer sleeve 6 is fixed to the output end of the motor 5, and a positioning groove 7 is provided on the outer side of the outer sleeve 6. The combined structure of the cylindrical outer sleeve 6 and the positioning groove 7 provides a dual positioning reference for the centering rod 2. Its rotating connection characteristics allow the receiver body 1 to adaptively adjust within a certain angle range, while preventing unexpected displacement through mechanical interlocking; the rigid connection between the inner end of the outer sleeve 6 and the motor 5 ensures power transmission efficiency and avoids the gap error of the traditional hinged structure.

[0018] Furthermore, two support rods are arranged in parallel on the top of the centering rod 2, and cross-shaped fixing keys 8 are provided on opposite sides of the ends of the support rods. The shape of the positioning groove 7 on the outer sleeve 6 is adapted to the fixing key 8. The support rod is elastic and can be stretched out to insert the fixing key 8 into the positioning groove 7. The cross-shaped fixing key 8 on the top of the centering rod 2 forms a geometric constraint with the positioning groove 7, which not only ensures quick disassembly and assembly but also provides a circumferential limiting function, which is more conducive to rapid deployment in the field than a single threaded connection method; the parallel support rod design disperses the force on the rod body and reduces the risk of deformation caused by single-point connection.

[0019] Furthermore, the function buttons of the receiver body 1 are located on the side wall between the two connectors. The function buttons are concentrated in the middle area between the two connectors, which meets the ergonomic operation requirements and avoids the destruction of the balance of the device due to the dispersion of the buttons.

[0020] Furthermore, a level bubble gauge 9 is provided on the side wall of the receiver body 1 between the two connecting parts, and the rotation angle of the centering rod 2 is observed by the level bubble gauge 9 to prevent the angle of the centering rod 2 from being misadjusted and causing the receiver body 1 to lose balance.

[0021] Furthermore, a counterweight is provided in the receiver body 1, which forms a composite stabilization system in conjunction with the self-balancing mechanism, thereby significantly improving the anti-disturbance capability in a strong wind environment.

[0022] When conducting surveying and mapping operations, the operator quickly installs the receiver body 1 to the top of the centering rod 2 through the cooperation of the cross-shaped fixing key 8 and the positioning slot 7. Its double-bracket design disperses the force on the connection point; during the measurement process, the built-in two-degree-of-freedom gyroscope 4 monitors the changes in the device's posture in real time, and drives the balance platform 3 to automatically adjust to a horizontal state by controlling the motors 5 on both sides to drive the connection to rotate, effectively replacing the traditional tedious operation of repeatedly adjusting the spirit level; when performing the layout task, the operator moves to the vicinity of the target point according to the virtual mark displayed on the handbook AR. At this time, the physical light spot projected by the bottom laser pointer and the screen mark form a dual positioning reference, and the positioning is realized through micro- By adjusting the tilt angle of the centering rod 2, the layout point can be accurately located, which significantly reduces the marking error caused by relying solely on large-size icons on the screen; when measuring the pole height, it is only necessary to tilt the centering rod 2 so that the laser points to the point to be measured, and the system automatically calculates the laser distance value as the pole height data, simplifying the traditional measurement process; during the entire operation, the level bubble meter 9 provides an auxiliary posture reference, which facilitates the rotation and adjustment of the centering rod 2 so that the two fixed keys 8 are at the same height. The composite stabilization system formed by the counterweight block and the self-balancing mechanism can maintain the stability of the equipment even in strong wind environments, solving the problem of easy shaking of the traditional single connection method, and realizing the unity of efficient operation and measurement accuracy.

[0023] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. Any equivalent changes made using the contents of the present invention specification and its drawings are included in the scope of the present invention.

Claims

1. A GNSS receiver for improving surveying and mapping accuracy, characterized by: It includes a receiver body and a centering rod. A self-balancing mechanism is fixed inside the receiver body. Connectors are fixed on both sides of the self-balancing mechanism. The connectors are rotatably connected to the two side walls of the receiver body. The top of the centering rod is detachably connected to the connectors. A laser pointer is longitudinally arranged at the bottom center of the receiver body.

2. The GNSS receiver for improving surveying and mapping accuracy according to claim 1, characterized in that: The self-balancing mechanism includes a balancing platform fixed in the receiver body, a two-degree-of-freedom gyroscope is arranged in the middle of the balancing platform, and motors connected to the gyroscope control are arranged on both sides of the balancing platform, and the output ends of the motors are respectively connected to the connecting parts.

3. The GNSS receiver for improving surveying and mapping accuracy according to claim 2, characterized in that: The connecting piece comprises a cylindrical outer sleeve which is rotatably connected to the side wall of the receiver body, an inner end of the outer sleeve is fixed to the output end of the motor, and a positioning groove is provided on the outer side of the outer sleeve.

4. The GNSS receiver for improving surveying and mapping accuracy according to claim 3, characterized in that: Two support rods are arranged in parallel on the top of the centering rod, and cross-shaped fixing keys are respectively arranged on the opposite sides of the ends of the support rods. The shape of the positioning groove on the outer sleeve is adapted to the fixing keys.

5. The GNSS receiver for improving surveying and mapping accuracy according to claim 1, characterized in that: The function buttons of the receiver body are located on the side wall between the two connecting parts.

6. The GNSS receiver for improving surveying and mapping accuracy according to claim 1, characterized in that: A level bubble gauge is provided on the side wall of the receiver body and located between the two connecting pieces.

7. The GNSS receiver for improving surveying and mapping accuracy according to claim 1, characterized in that: A counterweight is provided in the receiver body.

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