Intelligent trolley for testing navigation signal receiver and testing system

Abstract

The utility model discloses an intelligent dolly for testing a navigation signal receiver and a test system, which belong to the related technical field of satellite signal receiving equipment, and comprise a double-layer base plate, a walking assembly, a driving steering assembly, a signal receiving assembly and a signal transmission assembly. Therefore, the intelligent trolley can accurately receive the satellite signal processed by the navigation signal receiver to be tested, and performs corresponding motion based on the signal, thereby visually displaying the satellite signal received by the navigation signal receiver and completing the performance test of the satellite signal. The intelligent trolley for testing the navigation signal receiver is simple in structure and convenient to use, satellite signals received and processed by the navigation signal receiver can be visually reflected, the performance testing process of the navigation signal receiver can be visually completed, the testing efficiency and the testing precision of the navigation signal receiver can be effectively improved, and the testing cost can be reduced. And the practical value is high.

Description

Technical Field

[0001] The utility model belongs to the technical field related to satellite signal receiving devices, and particularly relates to an intelligent vehicle and a test system for testing a navigation signal receiver. Background Art

[0002] A navigation signal receiver is a device that can receive satellite signals and perform signal decoding, processing, and conversion, and has relatively wide applications in various fields. For example, a vehicle-mounted navigation signal receiver (GPS signal receiver) that plays an important role in people's daily lives.

[0003] For a vehicle-mounted navigation signal receiver, its data processing ability and the accuracy of data processing are directly related to the accuracy and precision of vehicle navigation, and have an extremely profound impact on people's daily lives. Therefore, when actually designing and producing a vehicle-mounted navigation signal receiver, it is necessary to test its data processing ability to ensure that it can meet the requirements of actual applications.

[0004] Currently, the main method for testing a navigation signal receiver is to send satellite signals to it, determine whether it can receive satellite signals, and observe whether the processed satellite signal results are consistent with the expected signal content. Although the above method can characterize the performance of the navigation signal receiver to a certain extent, the display effect of the foregoing method is poor. For a navigation signal receiver without a display screen, an external display device is also required to export the results of signal reception and the results after signal data processing. The display effect of the entire test process is poor, and the performance test characterization is not intuitive enough to accurately and effectively complete the performance test of the navigation signal receiver. Summary of the Utility Model

[0005] In view of one or more of the above-mentioned defects or improvement requirements in the prior art, the present utility model provides an intelligent vehicle and a test system for testing a navigation signal receiver, which can intuitively and accurately characterize the satellite signal reception and processing capabilities of the navigation signal receiver and accurately complete the performance test of the navigation signal receiver.

[0006] To achieve the above object, in one aspect of the present utility model, there is provided an intelligent vehicle for testing a navigation signal receiver, which includes:

[0007] A double-layer bottom plate, the double-layer bottom plate includes a first bottom plate and a second bottom plate that are stacked and spaced apart and connected by a plurality of columns;

[0008] A traveling assembly, which includes a pair of front wheels and a pair of rear wheels respectively disposed on the two lateral sides of the double-layer bottom plate in the transverse direction;

[0009] A drive and steering assembly is disposed between a first bottom plate and a second bottom plate, and includes a steering motor and a drive motor; an output shaft of the steering motor is rotationally connected to an end of a steering shaft of a front wheel, and is configured to drive the steering shaft to deflect relative to the first bottom plate and drive the front wheel to steer; an output shaft of the drive motor is assembled with a drive shaft connecting the rear wheels, and is configured to drive the two rear wheels to rotate forward or backward;

[0010] A signal receiving assembly, which includes a receiving antenna, and is configured to receive satellite signals processed by a navigation signal receiver to be tested;

[0011] A signal transmission assembly is electrically connected to the signal receiving assembly and the drive and steering assembly respectively, and is configured to transmit signal instructions received by the signal receiving assembly and control the drive and steering assembly to work correspondingly according to the signal instructions.

[0012] As a further improvement of the present utility model, a steering shaft and a steering motor are provided corresponding to each of the front wheels;

[0013] The steering motor is fixed on the first bottom plate, and an axis of its output shaft is perpendicular to the first bottom plate; one end of the steering shaft is rotationally connected to the front wheel coaxially, and the other end thereof is perpendicularly intersected and fixedly connected to the output shaft of the steering motor, so that the steering shaft can swing and steer following the rotation of the output shaft.

[0014] As a further improvement of the present utility model, a steering shaft is provided corresponding to each of the front wheels, a linkage rod is provided corresponding to the two steering shafts, and a steering motor is provided corresponding to the steering drives of the two steering shafts;

[0015] The two steering shafts respectively include a first end and a second end that form a certain obtuse angle with each other, and the two front wheels are respectively rotationally connected to ends of the first ends of the corresponding steering shafts; the linkage rod is disposed along the transverse direction of the first bottom plate, and two ends thereof are respectively hinged to ends of the second ends of the two steering shafts;

[0016] The steering motor is fixed on the double-layer bottom plate, and its output shaft is perpendicular to the plate surface of the first bottom plate and is fixedly connected to the middle of one of the steering shafts; correspondingly, the steering shaft not connected to the steering motor is rotationally connected to the first bottom plate at its middle.

[0017] As a further improvement of the present utility model, a drive shaft and a drive motor are provided corresponding to the two rear wheels respectively, and the two drive shafts are synchronously driven by their respective drive motors;

[0018] Or

[0019] The two rear wheels are respectively connected to both ends of the same drive shaft, and a drive motor is provided corresponding to the drive shaft. The output shaft of the drive motor is assembled with the drive shaft, so that the drive shaft can rotate forward or backward under the drive of the drive motor.

[0020] As a further improvement of the present invention, a top plate is also provided corresponding to the receiving antenna, and it is supported above the double-layer bottom plate through a plurality of columns;

[0021] The bottom of the receiving antenna is connected to the top plate, and the signal transmission component is arranged between the top plate and the double-layer bottom plate.

[0022] As a further improvement of the present invention, a display component is also arranged on the top plate, and it is electrically connected to the signal receiving component for displaying the satellite signal parameters received by the signal receiving component.

[0023] As a further improvement of the present invention, the head and tail ends of the two bottom plates are respectively arranged as arc-shaped structures.

[0024] Another aspect of the present invention also provides a test system for testing a navigation signal receiver, which includes the intelligent vehicle for testing a navigation signal receiver as described above, and further includes:

[0025] A satellite signal simulator, which can be communicatively connected to the navigation signal receiver to be tested for sending corresponding satellite signals to the navigation signal receiver to be tested; and

[0026] The intelligent vehicle can be communicatively connected to the navigation signal receiver to be tested through its signal receiving component, so as to receive the signal instructions sent out by the navigation signal receiver, and control the movement of the traveling component by the signal transmission component and the drive and steering component, and complete the test of the navigation signal receiver to be tested through the traveling of the intelligent vehicle.

[0027] As a further improvement of the present invention, a sand table for the free movement of the intelligent vehicle is also included.

[0028] As long as the above improved technical features do not conflict with each other, they can be combined with each other.

[0029] Generally speaking, compared with the prior art, the beneficial effects of the above technical solutions conceived by the present invention include:

[0030] (1)The intelligent vehicle for testing a navigation signal receiver of the present utility model includes a double-layer bottom plate, a traveling assembly, a driving and steering assembly, a signal receiving assembly, and a signal transmission assembly. By correspondingly arranging the traveling assembly and the driving and steering assembly on the double-layer bottom plate, the free movement of the vehicle can be achieved. Then, by combining the signal receiving assembly and the signal transmission assembly, the intelligent vehicle can accurately receive the satellite signals processed by the navigation signal receiver to be tested and perform corresponding movements based on these signals, thereby visually displaying the satellite signals received by the navigation signal receiver to be tested, completing the performance test of the navigation signal receiver, and quickly characterizing the performance indicators of the navigation signal receiver to be tested.

[0031] (2)The intelligent vehicle for testing a navigation signal receiver of the present utility model preferably arranges a steering assembly composed of two steering shafts, a linkage rod, and a steering motor. By combining the structures on the double-layer bottom plate, an Ackermann steering mechanism can be formed on the double-layer bottom plate, further improving the accuracy and precision of the steering control of the intelligent vehicle and reducing the difficulty of the steering control of the intelligent vehicle.

[0032] (3)The intelligent vehicle for testing a navigation signal receiver of the present utility model preferably arranges the structures of a display assembly, a signal receiving assembly, and a signal transmission assembly, which can effectively ensure its ability to receive the satellite signals processed by the navigation signal receiver to be tested and ensure the accuracy of the movement control of the intelligent vehicle.

[0033] (4)The test system for testing a navigation signal receiver of the present utility model separately arranges the intelligent vehicle and the satellite signal simulator, enabling the navigation signal receiver to be tested to receive the simulated satellite signals emitted by the satellite signal simulator and process them into the movement parameters of the intelligent vehicle. By using the movement of the intelligent vehicle, the test of the signal receiving and processing capabilities of the navigation signal receiver can be accurately and visually completed, simplifying the test process of the navigation signal receiver and improving the test efficiency of the navigation signal receiver.

[0034] (5)The intelligent vehicle for testing a navigation signal receiver of the present utility model has a simple structure and is convenient to use. It can visually reflect the satellite signals received and processed by the navigation signal receiver, visually complete the performance test process of the navigation signal receiver, effectively improve the test efficiency and test precision of the navigation signal receiver, and has good practical value. Description of the Drawings

[0035] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the accompanying drawings required for use in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those skilled in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0036] Figure 1 , Figure 2 are schematic structural diagrams of the intelligent vehicle in different axonometric views in the embodiments of the present utility model;

[0037] Figure 3 is a schematic structural diagram on the first bottom plate of the intelligent vehicle in the embodiments of the present utility model;

[0038] In all the accompanying drawings, the same reference numerals represent the same technical features, specifically:

[0039] 1. Double-layer bottom plate; 2. Traveling component; 3. Driving and steering component; 4. Signal receiving component; 5. Display component; 6. Signal transmission component;

[0040] 101. First bottom plate; 102. Second bottom plate; 201. Front wheel; 202. Rear wheel; 301. Steering motor; 302. Driving motor; 303. Steering shaft; 304. Linkage rod; 305. Driving shaft; 401. Top plate; 402. Receiving antenna. Detailed implementation manners

[0041] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the following further details the present utility model in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0042] In the description of the present utility model, it should be understood that unless otherwise clearly specified and limited, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0044] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.

[0046] Embodiment:

[0047] Please refer to Figures 1 to 3 , in the preferred embodiment of the present utility model, the intelligent vehicle for testing a navigation signal receiver includes a double-layer bottom plate 1 and a traveling assembly 2, a driving and steering assembly 3, a signal receiving assembly 4, and a signal transmission assembly 6 which are combined and arranged on the double-layer bottom plate 1.

[0048] Among them, the double-layer bottom plate 1 includes a first bottom plate 101 and a second bottom plate 102 which are stacked and spaced apart and connected to each other by a plurality of columns; the two bottom plates are preferably arranged in parallel, and a space for accommodating and mounting the driving and steering assembly 3 is formed between them.

[0049] The driving and steering assembly 3 in the preferred embodiment is arranged between the first bottom plate 101 and the second bottom plate 102, and is mainly used for steering drive and forward / backward drive of the traveling assembly 2 provided on the transverse two sides of the double-layer bottom plate 1.

[0050] More specifically, the running assembly 2 in the preferred embodiment includes a pair of front wheels 201 and a pair of rear wheels 202 respectively disposed on the transverse sides of the double-layer bottom plate 1. Among them, the pair of front wheels 201 are arranged at the front of the intelligent vehicle, and the pair of rear wheels 202 are arranged at the rear of the intelligent vehicle.

[0051] Correspondingly, the drive and steering assembly 3 is arranged corresponding to the running assembly 2, and it includes a steering motor 301 and a drive motor 302. Among them, the steering motor 301 is arranged corresponding to the front wheels 201, and its output shaft is connected to the steering shaft 303 that is rotatably connected to the end of the front wheels 201, and is used to drive the front wheels 201 to deflect by the steering shaft 303, thereby realizing the steering control of the intelligent vehicle. At the same time, the output shaft of the drive motor 302 is assembled with the drive shaft 305 connected to the end of the rear wheels 202, and is used to drive the two drive shafts 305 to rotate forward or reverse around the axis, so as to realize the forward or reverse control of the rear wheels 202, thereby driving the intelligent vehicle to move forward or backward.

[0052] Furthermore, a signal receiving assembly 4 is also arranged on the double-layer bottom plate 1 of the intelligent vehicle, and it includes a receiving antenna 402, which is used to establish a communication connection with the navigation signal receiver to be tested and receive the satellite signals processed by the navigation signal receiver to be tested.

[0053] Generally, for the navigation signal receiver to be tested, it can decode, compile and process the received satellite signals, and finally obtain the corresponding processing results.

[0054] During actual operation, the results processed by the navigation signal receiver to be tested include information such as travel distance and travel direction, which can be used to guide the corresponding movement of the intelligent vehicle.

[0055] Furthermore, a signal transmission assembly 6 is also arranged on the intelligent vehicle corresponding to the signal receiving assembly 4, and it is electrically connected to each motor in the signal receiving assembly 4 and the drive and steering assembly 3 respectively, and is used to transmit the signal instructions received by the signal receiving assembly 4 and control each motor to complete the corresponding control process, thereby driving the intelligent vehicle to complete steering and walking control.

[0056] During actual setting, the signal transmission assembly 6 can preferably be a circuit board integrated with several control elements, or a PLC controller that is more maturely applied in the prior art, which can accurately identify the direction information and travel information in the received signals, and then accurately control the running assembly 2 to complete running.

[0057] In a specific preferred embodiment, a steering shaft 303 and a steering motor 301 are arranged corresponding to each front wheel 201, as Figure 1 shown; at this time, each front wheel 201 is respectively controlled for steering by its own steering motor 301.

[0058] Specifically, the steering motor 301 is preferably fixed on the first bottom plate 101, and the axis of its output shaft is perpendicular to the plate surface of the first bottom plate 101. Correspondingly, one end of the steering shaft 303 is coaxially and rotatably connected to the front wheel 201, so that the front wheel 201 can rotate around the axis relative to the steering shaft 303; at the same time, the other end of the steering shaft 303 is vertically intersected and fixedly connected to the output shaft of the steering motor 301. At this time, by the operation of the steering motor 301, its output shaft can be rotated, and then the steering shaft 303 can swing and turn following the rotation of the output shaft, thereby completing the steering control of the intelligent vehicle.

[0059] It is not difficult to understand that during actual steering control, since the turning radii of the front wheels on both lateral sides of the intelligent vehicle are different, the deflection control of the two is different, which can be achieved by separately controlling the two steering motors 301, and will not be elaborated here.

[0060] Considering the foregoing situation, in another preferred embodiment, an Ackermann steering mechanism is provided for a pair of front wheels 201 of the intelligent vehicle, and the structural form is as Figure 3 shown. At this time, a steering shaft 303 is provided corresponding to each front wheel 201, a linkage rod 304 is provided corresponding to the two steering shafts 303, and a steering motor 301 is provided corresponding to the steering drive of the two steering shafts 303.

[0061] Specifically, the two steering shafts 303 respectively include a first end and a second end that form a certain obtuse angle with each other, as Figure 3 shown. In a preferred embodiment, the angle between the first end and the second end is preferably 120° - 150°. At the same time, the two front wheels 201 are respectively rotatably connected to the end of the first end of the corresponding steering shaft 303; the linkage rod 304 is arranged horizontally along the first bottom plate 101, and its two ends are respectively hinged to the ends of the second ends of the two steering shafts 303.

[0062] More specifically, the steering motor 301 is fixed on the double-layer bottom plate 1, and it is further preferably fixed on the bottom surface of the second bottom plate 102 or on the top surface of the first bottom plate 101. The output shaft of the steering motor 301 faces downward and is perpendicular to the plate surface of the first bottom plate 101. At the same time, the output shaft of the steering motor 301 is fixedly connected to the middle of one of the steering shafts 303, and the connection part is further preferably at the junction of the first end and the second end. Correspondingly, the steering shaft 303 not connected to the steering motor 301 is rotatably connected to the first bottom plate 101 at its middle.

[0063] During actual setting, the two steering shafts 303 are preferably symmetrically arranged with respect to the midline of the first bottom plate 101.

[0064] Through the corresponding setting of the aforementioned Ackermann steering mechanism, the intelligent vehicle can perform Ackermann steering. That is, when the output shaft of the steering motor 301 directly drives one of the steering shafts 303 to deflect, the other steering shaft 303 can be driven by the linkage rod 304 to perform linkage under the corresponding deflection angle, thereby completing the steering control of the intelligent vehicle and ensuring the accuracy of the steering control of the intelligent vehicle.

[0065] Furthermore, in actual setting, there are mainly two ways to control the driving of the two rear wheels 202.

[0066] The first way is to respectively provide a drive shaft 305 and a drive motor 302 for the two rear wheels 202, and the two drive shafts 305 are respectively driven synchronously by their respective drive motors 302, as Figure 3 shown in.

[0067] The second way is to connect the two rear wheels 202 to both ends of the same drive shaft 305 respectively, and a drive motor 302 is provided corresponding to the drive shaft 305. The output shaft of the drive motor 302 is assembled with the drive shaft 305, so that the drive shaft 305 can rotate forward or backward under the drive of the drive motor 302.

[0068] In actual setting, the transmission between the drive shaft 305 and the drive motor 302 can preferably be carried out through a gear transmission component. At this time, the output shaft of the drive motor 302 is preferably parallel to the drive shaft 305. Gears are respectively provided on the outer periphery of the output shaft and the outer periphery of the drive shaft 305, and the two gears are meshed with each other to complete the rotation control of the drive shaft 305 through the meshing transmission of the gears.

[0069] Furthermore, a top plate 401 is also provided corresponding to the receiving antenna 402, and it is supported above the double-layer bottom plate 1 by a plurality of columns.

[0070] More specifically, the bottom of the receiving antenna 402 is connected to the top plate 401, and the signal transmission component 6 is arranged between the top plate 401 and the second bottom plate 102. In a preferred embodiment, the signal transmission component 6 is a control circuit board supported and fixed on the second bottom plate 102 by a plurality of columns, and various control elements for transmitting signal instructions are integrated on this circuit board.

[0071] Further preferably, a display component 5 is also provided corresponding to the top plate 401. It is electrically connected to the signal receiving component 4 and is used to display the satellite signal parameters received by the signal receiving component 4. In the preferred embodiment as Figure 1 shown, the display component 5 is preferably a display screen.

[0072] More preferably, in order to avoid collisions during the movement of the intelligent vehicle and realize flexible steering of the intelligent vehicle at the walls and edges, it is preferred to respectively set the head and tail ends of the two bottom plates as arc-shaped structures, asFigure 1 as shown in

[0073] Furthermore, as another aspect of the present utility model, in a preferred embodiment, a test system for testing a navigation signal receiver is further provided, which includes the aforementioned intelligent vehicle for testing a navigation signal receiver, and on this basis, further includes:

[0074] A satellite signal simulator, which can be communicatively connected to the navigation signal receiver to be tested, and is capable of generating signals and various navigation data of different frequency bands and code patterns of various satellite navigation systems such as GPS, Beidou, Glonass, Galileo, etc., for sending corresponding satellite signals to the navigation signal receiver to be tested. After receiving the above satellite signals, the navigation signal receiver can decode, compile, and process them, and finally obtain navigation instructions containing information such as the movement direction and travel distance.

[0075] Meanwhile, the intelligent vehicle can be communicatively connected to the navigation signal receiver to be tested through its signal receiving component 4, so as to receive the navigation instructions transmitted from the navigation signal receiver, and control the running component 2 to move through the signal transmission component 6 and the driving and steering component 3, and complete the test of the navigation signal receiver to be tested through the running of the intelligent vehicle.

[0076] In actual setting, for the running of the intelligent vehicle, a sand table is further preferably provided, so that the intelligent vehicle can correspondingly run in the sand table after receiving the navigation instructions from the navigation signal receiver.

[0077] The intelligent vehicle for testing a navigation signal receiver in the present utility model has a simple structure and is convenient to use. It can intuitively reflect the satellite signals received and processed by the navigation signal receiver, and intuitively complete the performance test process of the navigation signal receiver, effectively improving the test efficiency and test accuracy of the navigation signal receiver, and having good practical value.

[0078] Those skilled in the art can easily understand that the above description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An intelligent vehicle for testing a navigation signal receiver, characterized in that: include: A double-layer bottom plate, the double-layer bottom plate comprising a first bottom plate and a second bottom plate which are stacked and spaced apart and connected by a plurality of columns; A running assembly, comprising a pair of front wheels and a pair of rear wheels respectively arranged on two lateral sides of the double-layer bottom plate; A driving steering assembly is arranged between the first base plate and the second base plate, and includes a steering motor and a driving motor; an output shaft of the steering motor is connected to a steering shaft whose end is rotatably connected to the front wheel, and is used to drive the steering shaft to deflect relative to the first base plate and drive the front wheel to steer; The output shaft of the driving motor is assembled with the driving shaft connected to the rear wheels, and is used to drive the two rear wheels to rotate forward or reverse; A signal receiving component, comprising a receiving antenna, for receiving satellite signals processed by the navigation signal receiver to be tested; The signal transmission component is electrically connected to the signal receiving component and the driving steering component respectively, and is used to transmit the signal instructions received by the signal receiving component and control the driving steering component to work accordingly according to the signal instructions.

2. The intelligent vehicle for testing a navigation signal receiver according to claim 1, characterized in that: A steering shaft and a steering motor are provided corresponding to each of the front wheels; The steering motor is fixed on the first base plate, and the axis of its output shaft is perpendicular to the first base plate; one end of the steering shaft is coaxially connected to the front wheel for rotation, and the other end thereof is perpendicularly intersected with and fixedly connected to the output shaft of the steering motor, so that the steering shaft can follow the rotation of the output shaft to perform yaw steering.

3. The intelligent vehicle for testing a navigation signal receiver according to claim 1, characterized in that: A steering shaft is provided corresponding to each of the front wheels, a linkage rod is provided corresponding to the two steering shafts, and a steering motor is provided corresponding to the steering drive of the two steering shafts; The two steering shafts respectively include a first end and a second end which form a certain obtuse angle with each other, and the two front wheels are respectively rotatably connected to the first end of the corresponding steering shaft; the linkage rod is arranged along the transverse direction of the first bottom plate, and its two ends are respectively hinged to the second end of the two steering shafts; The steering motor is fixed on the double-layer bottom plate, and its output shaft is perpendicular to the surface of the first bottom plate and fixedly connected to the middle of one of the steering shafts; accordingly, the steering shaft not connected to the steering motor is rotatably connected to the first bottom plate at its middle.

4. The intelligent vehicle for testing a navigation signal receiver according to any one of claims 1 to 3, characterized in that: A drive shaft and a drive motor are respectively provided corresponding to the two rear wheels, and the two drive shafts are synchronously driven by their respective drive motors; or The two rear wheels are respectively connected to the two ends of the same drive shaft, and a drive motor is provided corresponding to the drive shaft. The output shaft of the drive motor is assembled with the drive shaft, so that the drive shaft can rotate forward or reverse under the drive of the drive motor.

5. The intelligent vehicle for testing a navigation signal receiver according to any one of claims 1 to 3, characterized in that: A top plate is also provided corresponding to the receiving antenna, and is supported by a plurality of columns and arranged above the double-layer bottom plate; The bottom of the receiving antenna is connected to the top plate, and the signal transmission component is arranged between the top plate and the double-layer bottom plate.

6. The intelligent vehicle for testing a navigation signal receiver according to claim 5, characterized in that: The top plate is also provided with a display component which is electrically connected to the signal receiving component and is used to display the satellite signal parameters received by the signal receiving component.

7. The intelligent vehicle for testing a navigation signal receiver according to any one of claims 1 to 3 and 6, characterized in that: The head and tail ends of the two bottom plates are respectively arranged as arc structures.

8. A test system for testing a navigation signal receiver, characterized in that: The test system comprises the intelligent vehicle for testing a navigation signal receiver according to any one of claims 1 to 7, and further comprises: a satellite signal simulator, which can be communicatively connected to the navigation signal receiver to be tested, and is used to send a corresponding satellite signal to the navigation signal receiver to be tested; and The smart car can be connected to the navigation signal receiver to be tested through its signal receiving component to communicate with it, so as to receive the signal instruction transmitted from the navigation signal receiver, and the signal transmission component and the driving steering component can control the movement of the running component, and the test of the navigation signal receiver to be tested is completed through the running of the smart car.

9. The test system for testing a navigation signal receiver according to claim 8, characterized in that: It also includes a sandbox for the free movement of the smart car.

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