Driver's field of view simulation device and method of measuring thereof

By combining the light-emitting and measuring mechanisms of the driver's field of vision simulation device with the manufacturer's R-point coordinate values, the deviation problem of existing testing methods has been solved, thus improving the accuracy of driver's field of vision testing and simplifying multi-item measurements.

CN122409208APending Publication Date: 2026-07-17CATARC AUTOMOTIVE TEST CENT (GUANGZHOU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CATARC AUTOMOTIVE TEST CENT (GUANGZHOU) CO LTD
Filing Date
2026-05-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing machine laser detection and manual detection methods lack experimental prerequisites and have not calibrated and adjusted the exact relative coordinate values ​​of the R point provided by the manufacturer, resulting in a large deviation between the measurement results and the actual required results.

Method used

A driver vision simulation device is provided, including a main body, a light-emitting mechanism, and a measuring mechanism. By adjusting the module and the measuring mechanism, the position of the light source and the distance to the seat latch point are precisely adjusted, and the measurement accuracy is ensured by comparing the R-point coordinate value provided by the manufacturer.

Benefits of technology

It improves the accuracy of driver vision testing, simplifies multi-item measurement operations, is compatible with different vehicle models, and enhances the reliability of measurement data.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to a driver's field of vision simulation device and its measurement method. The driver's field of vision simulation device includes a main body, a light-emitting mechanism, and a measuring mechanism. The main body is mounted on the driver's seat of a test vehicle. The light-emitting mechanism includes multiple light sources and an adjustment module. The adjustment module is mounted on the main body and connected to the light sources. The adjustment module is used to adjust the lateral, longitudinal, and vertical positions of the light sources relative to the test vehicle. The measuring mechanism is mounted on the main body and is used to measure the distance between the driver's seat latch point and the main body. The solution provided in this application can ensure the accuracy of driver's field of vision testing.
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Description

Technical Field

[0001] This application relates to the field of automotive testing technology, and in particular to a driver vision simulation device and its measurement method. Background Technology

[0002] A driver's forward visibility is a key factor in driving safety, and conducting experimental research on this aspect is an important means of improving driving safety. Existing experimental procedures typically include both machine laser detection and manual inspection.

[0003] In machine laser inspection, V1 and V2 points that meet national standards are usually set on the mechanical rod. The laser structure is installed on the mechanical rod structure. Only the four corner points of the A and B areas of the car window are marked. Not only can a line be formed, but it also lacks the ability to measure reference points a, b, and c, binocular obstruction angle, 4° surface obstruction under the driver's 180° field of vision, and S area obstruction. Furthermore, it cannot calibrate the R point according to national standards.

[0004] In manual inspection, a three-dimensional coordinate articulated arm instrument is typically used to establish a relative coordinate system inside the vehicle using fixed points. The R-point of the dummy is adjusted to the manufacturer-defined R-point position to determine points V1 and V2. Then, the three-dimensional coordinate articulated arm is used to mark points on the windshield to confirm the positions of areas A and B. Finally, areas A and B are manually drawn symmetrically. Then, the three-dimensional coordinate articulated arm is used to measure reference points a, b, and c, the binocular obstacle angle, obstacles on a 4° surface under the driver's 180° field of vision, and obstacles in area S.

[0005] In related technologies, both machine laser detection and manual detection lack experimental prerequisites, namely, the dummy position is not calibrated and adjusted based on the exact relative coordinates of the R point provided by the manufacturer, resulting in a large deviation between the measurement results and the actual required results. Summary of the Invention

[0006] To address or partially address the problems existing in related technologies, this application provides a driver vision simulation device and its measurement method, which can ensure the accuracy of driver vision tests.

[0007] The first aspect of this application provides a driver's field of vision simulation device, which includes a main body, a light-emitting mechanism, and a measuring mechanism; the main body is used to be mounted on the driver's seat of a test vehicle; the light-emitting mechanism includes multiple light sources and an adjustment module, the adjustment module is mounted on the main body, the adjustment module is connected to the light sources, and the adjustment module is used to adjust the lateral, longitudinal, and vertical positions of the light sources relative to the test vehicle; the measuring mechanism is mounted on the main body, and the measuring mechanism is used to measure the distance between the driver's seat latch point of the test vehicle and the main body.

[0008] Furthermore, the measuring mechanism includes a hinge frame, a first telescopic rod, and a second telescopic rod. The hinge frame is hinged to the main body. One end of the first telescopic rod is connected to the hinge frame, and the other end of the first telescopic rod is connected to one end of the second telescopic rod. The first telescopic rod extends horizontally, and the end of the second telescopic rod away from the first telescopic rod is used to abut against the driver's seat latch point of the test vehicle.

[0009] Furthermore, the first telescopic rod is provided with a plurality of first scales, which are spaced apart along the length direction of the first telescopic rod; the second telescopic rod is provided with a plurality of second scales, which are spaced apart along the length direction of the second telescopic rod.

[0010] Furthermore, the hinge frame is equipped with a first angle measuring instrument, which is used to detect the relative angle between the hinge frame and the main body.

[0011] Furthermore, the driver's field of vision simulation device also includes a back angle adjustment mechanism, which includes an adjustment plate and a connecting rod. One end of the connecting rod is connected to the main body, and the other end of the connecting rod is hinged to the adjustment plate. The adjustment plate is used to abut against the driver's seat of the test vehicle.

[0012] Furthermore, the adjustment module includes a bracket and a lifting assembly. The lifting assembly is connected to the main body and the bracket, and the lifting assembly is used to drive the bracket to lift.

[0013] Furthermore, the adjustment module also includes a rotating frame and a first rotating shaft. The first rotating shaft is mounted on the bracket and extends vertically. The light source includes a first light source, a second light source, a third light source, a fourth light source, and a fifth light source. The first light source and the second light source are respectively mounted on the rotating frame. The first light source and the second light source are at the same height and are offset from each other. The third light source, the fourth light source, and the fifth light source are respectively mounted on the first rotating shaft from top to bottom. The third light source, the fourth light source, and the fifth light source rotate around the first rotating shaft.

[0014] Furthermore, the adjustment module also includes a second rotating shaft, which is mounted on the bracket and extends horizontally. The light source also includes a sixth light source and a seventh light source, which are respectively mounted on the second rotating shaft. The sixth light source and the seventh light source rotate around the second rotating shaft and are located between the first light source and the third light source.

[0015] Furthermore, the adjustment module also includes a third rotating shaft, which is mounted on the bracket and extends horizontally. The light source also includes an eighth light source and a ninth light source, which are respectively mounted on the third rotating shaft and rotate around the third rotating shaft. The eighth light source and the ninth light source are located between the first rotating shaft and the second rotating shaft.

[0016] This application also provides a measurement method using the aforementioned driver vision simulation device, comprising the following steps: The main body is installed on the driver's seat to measure the angle of multiple light sources in real time; By adjusting the angle of the driver's seat backrest and the backrest angle of the main body, the heights of points V1 and V2 are calculated using the national standard calculation method, and the light source is adjusted to the heights of points V1 and V2. The three-dimensional coordinate system of point H relative to the driver's seat latch point is measured in real time by the measuring mechanism. The coordinates of point R relative to the driver's seat latch point are compared with those provided by the manufacturer to confirm whether the coordinates of point R match the coordinates of point H. The position of the forward vision measuring device is adjusted in real time by adjusting the position of the driver's seat until it matches the coordinates provided by the manufacturer. Turn on the light source.

[0017] The technical solution provided in this application may include the following beneficial results: by setting a measuring mechanism on the main body, the distance between the driver's seat latch point of the test vehicle and the main body is measured by the measuring mechanism, so that the staff can calculate the relative coordinate system between the driver's seat latch point of the vehicle and the R point of the main body, which makes it convenient for the staff to compare the measurement data with the relative coordinate system provided by the manufacturer, and ensure the accuracy of the driver's vision test.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0019] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0020] Figure 1 This is a schematic diagram of the driver's field of vision simulation device shown in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the light-emitting mechanism shown in the embodiments of this application; Figure 3This is a structural schematic diagram of the three-dimensional coordinate system shown in the embodiments of this application; Figure 4 This is a schematic diagram of the projection of a light source onto a windshield as shown in an embodiment of this application.

[0021] Reference numerals: Main body 1; Light-emitting mechanism 2; First light source 21; Second light source 22; Third light source 23; Fourth light source 24; Fifth light source 25; Sixth light source 26; Seventh light source 27; Eighth light source 28; Ninth light source 29; Tenth light source 210; Eleventh light source 211; Twelfth light source 212; Support 213; Lifting assembly 214; Rotating frame 215; Measuring mechanism 3; Hinge frame 31; First angle measuring instrument 311; First telescopic rod 32; Second telescopic rod 33; Second angle measuring instrument 331; Back angle adjustment mechanism 4; Adjustment plate 41; Connecting rod 42. Detailed Implementation

[0022] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0023] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] Both machine laser detection and manual detection lack the necessary experimental prerequisites, namely, the dummy's position is not calibrated and adjusted using the precise relative coordinates of the R-point provided by the manufacturer, leading to significant deviations between the measurement results and the actual required results. To address these issues, this application provides a driver's field of vision simulation device and its measurement method, ensuring the accuracy of driver's field of vision testing.

[0027] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0028] See Figure 1 The driver's field of vision simulation device includes a main body 1, a light-emitting mechanism 2, and a measuring mechanism 3. The main body 1 can be placed as a dummy on the driver's seat of the test vehicle. The light-emitting mechanism 2 includes multiple light sources and an adjustment module. The adjustment module is installed on the main body 1 and connected to the light sources. The adjustment module is used to adjust the lateral, longitudinal, and vertical positions of the light sources relative to the test vehicle.

[0029] See Figure 1 The light source emits light, which acts as the driver's line of sight during the driver's field of vision simulation. The adjustment block simulates the driver's field of vision when seated in the driver's seat by adjusting the lateral, longitudinal, and vertical positions of the light source relative to the test vehicle. During actual measurement of the driver's field of vision, the light emitted by the light source falls on the windshield of the test vehicle, facilitating the acquisition of information about the driver's field of vision by the operator. The measuring mechanism 3 is mounted on the main body 1 and is used to measure the distance between the driver's seat latch point and the main body 1.

[0030] See Figure 1The measuring mechanism 3 includes a hinge frame 31, a first telescopic rod 32, and a second telescopic rod 33. The hinge frame 31 is hinged to the main body 1. One end of the first telescopic rod 32 is connected to the hinge frame 31, and the first telescopic rod 32 is fixed to the hinge frame 31. The first telescopic rod 32 and the hinge frame 31 can swing up and down relative to the main body 1. The other end of the first telescopic rod 32 is connected to one end of the second telescopic rod 33. The first telescopic rod 32 extends horizontally, and the end of the second telescopic rod 33 away from the first telescopic rod 32 is used to abut against the driver's seat latch point of the test vehicle. The first telescopic rod 32 and the second telescopic rod 33 are telescopic, allowing the second telescopic rod 33 to abut against the driver's seat latch point of different vehicle models, thus facilitating the compatibility of the measuring mechanism 3 with different test vehicles.

[0031] This application sets a measuring mechanism 3 on the main body to measure the distance between the driver's seat latch point of the test vehicle and the main body 1. This allows the staff to calculate the relative coordinate system between the driver's seat latch point and point R on the main body, making it convenient for the staff to compare the measurement data with the relative coordinate system provided by the manufacturer, thus ensuring the accuracy of the driver's vision test.

[0032] In some embodiments, when the second telescopic rod 33 abuts against the driver's seat latch point of the test vehicle, the operator can use a ruler to measure the distance between the driver's seat latch point and the main body 1.

[0033] See Figure 1 In some embodiments, the first telescopic rod 32 has multiple first graduations, which are spaced apart along the length of the first telescopic rod 32. The second telescopic rod 33 has multiple second graduations, which are spaced apart along the length of the second telescopic rod 33. Operators can directly read the length readings of the first telescopic rod 32 and the second telescopic rod 33 to calculate the distance between the driver's seat locking point and the main body 1.

[0034] See Figure 1 The articulation frame 31 is equipped with a first angle measuring instrument 311, which is used to detect the relative angle between the articulation frame 31 and the main body 1. The second telescopic rod 33 is equipped with a second angle measuring instrument 331 at one end near the first telescopic rod 32, which is used to measure the angle of the second telescopic rod 33 relative to the driver's seat locking point.

[0035] See Figure 1The driver's field of vision simulation device also includes a backrest angle adjustment mechanism 4, which includes an adjustment plate 41 and a connecting rod 42. One end of the connecting rod 42 is connected to the main body 1, and the other end of the connecting rod 42 is hinged to the adjustment plate 41. The adjustment plate 41 is used to abut against the driver's seat of the test vehicle. The connecting rod 42 passes through the main body 1, and the main body 1 is fixed to the connecting rod 42 by a rotating bolt. The main body 1 can adjust the distance between the main body 1 and the adjustment plate 41 through the connecting rod 42, and then fix the main body 1 and the connecting rod 42 together by the rotating bolt. The adjustment plate 41 can swing up and down relative to the connecting rod 42, thereby facilitating the fit of the adjustment plate 41 against the back of the driver's seat of the test vehicle.

[0036] See Figure 1 and Figure 2 The adjustment module includes a bracket 213 and a lifting assembly 214. The lifting assembly 214 is connected to the main body 1 and detachably connected to the bracket 213. The lifting assembly 214 is used to drive the bracket 213 to rise and fall. The lifting assembly 214 includes a lifting rod and an adjusting bolt. The top of the lifting rod passes through the bracket 213, and the bottom end of the lifting rod is connected to the main body 1. The adjusting bolt is screwed onto the bracket 213, with one end of the adjusting bolt abutting against the lifting rod. When the height of the bracket 213 needs to be adjusted, the operator can loosen the adjusting bolt, adjust the height of the bracket 213, and then tighten the adjusting bolt until it abuts against the lifting rod, thus fixing the bracket 213 and the lifting rod relatively. A power supply box is provided on the bracket 213, which can control the switching of various power supplies.

[0037] See Figure 1 and Figure 2 The adjustment module also includes a rotating frame 215 and a first rotating shaft. The first rotating shaft is mounted on the bracket 213 and extends vertically. The light source includes a first light source 21, a second light source 22, a third light source 23, a fourth light source 24, and a fifth light source 25. The first light source 21 and the second light source 22 are respectively mounted on the rotating frame 215. The first light source 21 and the second light source 22 are at the same height and are staggered. The third light source 23, the fourth light source 24, and the fifth light source 25 are respectively mounted on the first rotating shaft from top to bottom. The third light source 23, the fourth light source 24, and the fifth light source 25 rotate around the first rotating shaft.

[0038] See Figure 1 and Figure 2The adjustment module also includes a second rotating shaft, which is mounted on the bracket 213 and extends horizontally. The light source also includes a sixth light source 26 and a seventh light source 27, which are respectively mounted on the second rotating shaft. The sixth light source 26 and the seventh light source 27 rotate around the second rotating shaft and are located between the first light source 21 and the third light source 23. The orientation of the sixth light source 26 is lower than that of the seventh light source 27.

[0039] See Figure 1 and Figure 2 The adjustment module also includes a third rotating shaft, which is mounted on the bracket 213. The third rotating shaft is parallel to the second rotating shaft and extends horizontally. The light source also includes an eighth light source 28 and a ninth light source 29, which are respectively mounted on the third rotating shaft. The eighth light source 28 and the ninth light source 29 rotate around the third rotating shaft. The eighth light source 28 and the ninth light source 29 are located between the first rotating shaft and the second rotating shaft. The orientation of the eighth light source 28 is lower than that of the ninth light source 29.

[0040] See Figure 1 and Figure 2 The adjustment module also includes a fourth rotating axis, which is mounted on the bracket 213 and is parallel to the third rotating axis. The fourth rotating axis extends horizontally. The light source also includes a tenth light source 210 and an eleventh light source 211, which are respectively mounted on the fourth rotating axis and rotate around it. The tenth and eleventh light sources 210 and 211 are located between the fifth light source 25 and the third rotating axis, with the orientation of the tenth light source 210 slightly higher than that of the eleventh light source 211. The adjustment module also includes a fifth rotating axis, which is mounted on the bracket 213 and is perpendicular to both the third and first rotating axes. The light source also includes a twelfth light source 212, which is mounted on the fifth rotating axis and rotates around it.

[0041] Corresponding to the aforementioned application function implementation device embodiments, this application also provides a measurement method and corresponding embodiments.

[0042] See Figure 3Point H is the hinge center between the dummy's torso and thighs. During measurement, point H should coincide with point R. Point V is the driver's eye point. Its position is determined by the longitudinal vertical plane passing through the center line of the driver's seating position, point R, and the designed seat back angle. Different vehicles have different designed seat back angles, and the position of point V relative to point R will vary. Changes in the position of point V will also change the intersection of the ray forward from point V and the outer surface of the windshield of the test vehicle. Changes in the windshield reference point will also affect the area of ​​regions A and B. Point V is used to check whether the vehicle's field of vision meets the requirements. See also... Figure 3 V1 and V2 are commonly used to represent different positions of point V, and the intersections of the ray forward from point V with the outer surface of the windshield glass are (a, b, c, a', b', c').

[0043] See Figure 1 and Figure 4 Region A is the area enclosed by the intersection lines of four planes extending forward from point V and the outer surface of the windshield: a vertical plane passing through points V1 and V2 and at a 13° angle to the X-axis to the left; a plane passing through point V1 and at a 3° angle to the X-axis, parallel to the Y-axis; a plane passing through point V2 and at a 1° angle to the X-axis, parallel to the Y-axis; and a vertical plane passing through points V1 and V2 and at a 20° angle to the X-axis to the right. Region B is the area of ​​the outer surface of the windshield enclosed by the following four planes: a plane passing through point V1 and at a 7° angle to the X-axis, parallel to the Y-axis; a plane passing through point V2 and at a 5° angle to the X-axis, parallel to the Y-axis; a vertical plane passing through points V1 and V2 and at a 17° angle to the X-axis to the left; and a plane symmetrical to the previous vertical plane, with the longitudinal center plane of the vehicle as the reference plane.

[0044] The measurement method uses a driver's field of vision simulation device and includes the following steps: The staff first installed the main body 1 on the driver's seat and measured the angles of multiple light sources in real time; The angle of the adjustment plate 41 is measured in real time. By adjusting the angle of the driver's seat back, the backrest angle of the main body 1 is also adjusted. The height of points V1 and V2 is calculated using the national standard calculation method. The light source is then adjusted to the height of points V1 and V2 by the lifting component 214.

[0045] By extending and retracting the first telescopic rod 32 and the second telescopic rod 33, the second telescopic rod 33 is pressed against the driver's seat locking point. The distance between the first telescopic rod 32 and the second telescopic rod 33 is measured, and then the angle of the first telescopic rod 32 relative to the main body 1 is read by the first angle measuring instrument 311.

[0046] The system measures the coordinates of point H relative to the driver's seat latch point in real time. It then compares the coordinates of point R relative to the driver's seat latch point provided by the manufacturer to confirm whether the coordinates of point R match the coordinates of point H. The system then adjusts the position of the driver's seat in real time to adjust the position of the forward vision measurement device until it matches the coordinates provided by the manufacturer.

[0047] The third light source 23, the fourth light source 24, the seventh light source 27, and the eleventh light source 211 are turned on, forming the outline of area A on the windshield of the test vehicle. The fifth light source 25, the sixth light source 26, and the tenth light source 210 are turned on, forming the outline of area B on the windshield of the test vehicle. The binocular obstacle angle switch is activated, turning on the first light source 21, the second light source 22, the eighth light source 28, the ninth light source 29, and the twelfth light source 212. The first light source 21, the second light source 22, the eighth light source 28, and the ninth light source 29 can measure the binocular obstacle angle by rotating the angle measuring device mounted on them. The twelfth light source 212 can measure whether there is an obstacle at 4° below the passenger side, thus meeting the requirement of measuring obstacles at 4° below the driver's 180° field of vision.

[0048] This application measures the distance between the driver's seat latch point and the main body 1 using the measuring mechanism 3. This allows the operator to calculate the relative coordinate system between the driver's seat latch point and point R on the main body, facilitating comparison of the measurement data with the relative coordinate system provided by the manufacturer and ensuring the accuracy of the driver's field of vision test. Through a detachable, multi-combination structure, measurements of areas A and B, reference points a, b, and c, the binocular obstruction angle, and the 4° surface obstruction below the driver's 180° field of vision are integrated into a single forward field of vision measuring device. This simplifies the operation process without requiring readjustment of the dummy base and can meet the purpose of multi-item measurement.

[0049] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs.

[0050] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A driver's field of vision simulation device, characterized in that, include: The main body is used to be mounted on the driver's seat of the test vehicle; The light-emitting mechanism includes multiple light sources and an adjustment module. The adjustment module is installed on the main body and connected to the light sources. The adjustment module is used to adjust the lateral, longitudinal, and vertical positions of the light sources relative to the test vehicle. A measuring mechanism is installed on the main body and is used to measure the distance between the driver's seat latch point of the test vehicle and the main body.

2. The driver's field of vision simulation device according to claim 1, characterized in that: The measuring mechanism includes a hinge frame, a first telescopic rod, and a second telescopic rod. The hinge frame is hinged to the main body. One end of the first telescopic rod is connected to the hinge frame, and the other end of the first telescopic rod is connected to one end of the second telescopic rod. The first telescopic rod extends horizontally, and the end of the second telescopic rod away from the first telescopic rod is used to abut against the driver's seat latch point of the test vehicle.

3. The driver's field of vision simulation device according to claim 2, characterized in that: The first telescopic rod has multiple first scales, which are spaced apart along the length of the first telescopic rod. The second telescopic rod has multiple second scales, which are spaced apart along the length of the second telescopic rod.

4. The driver's field of vision simulation device according to claim 2, characterized in that: The hinge frame is equipped with a first angle measuring instrument, which is used to detect the relative angle between the hinge frame and the main body.

5. The driver's field of vision simulation device according to claim 1, characterized in that: It also includes a backrest angle adjustment mechanism, which includes an adjustment plate and a connecting rod. One end of the connecting rod is connected to the main body, and the other end of the connecting rod is hinged to the adjustment plate. The adjustment plate is used to abut against the driver's seat of the test vehicle.

6. The driver's field of vision simulation device according to claim 1, characterized in that: The adjustment module includes a bracket and a lifting assembly. The lifting assembly is connected to the main body and the bracket. The lifting assembly is used to drive the bracket to lift.

7. The driver's field of vision simulation device according to claim 6, characterized in that: The adjustment module further includes a rotating frame and a first rotating shaft. The first rotating shaft is mounted on the bracket and extends vertically. The light source includes a first light source, a second light source, a third light source, a fourth light source, and a fifth light source. The first light source and the second light source are respectively mounted on the rotating frame. The first light source and the second light source are at the same height and are offset from each other. The third light source, the fourth light source, and the fifth light source are respectively mounted on the first rotating shaft from top to bottom. The third light source, the fourth light source, and the fifth light source rotate around the first rotating shaft.

8. The driver's field of vision simulation device according to claim 7, characterized in that: The adjustment module further includes a second rotating shaft, which is mounted on the bracket and extends horizontally. The light source also includes a sixth light source and a seventh light source, which are respectively mounted on the second rotating shaft. The sixth light source and the seventh light source rotate around the second rotating shaft and are located between the first light source and the third light source.

9. The driver's field of vision simulation device according to claim 8, characterized in that: The adjustment module further includes a third rotating shaft, which is mounted on the bracket and extends horizontally. The light source further includes an eighth light source and a ninth light source, which are respectively mounted on the third rotating shaft and rotate around the third rotating shaft. The eighth light source and the ninth light source are located between the first rotating shaft and the second rotating shaft.

10. A measurement method using the driver's field of vision simulation device according to any one of claims 1 to 9, characterized in that, Includes the following steps: The main body is installed on the driver's seat to measure the angle of multiple light sources in real time; By adjusting the angle of the driver's seat backrest and the backrest angle of the main body, the heights of points V1 and V2 are calculated using the national standard calculation method, and the light source is adjusted to the heights of points V1 and V2. The three-dimensional coordinate system of point H relative to the driver's seat latch point is measured in real time by the measuring mechanism. The coordinates of point R relative to the driver's seat latch point are compared with those provided by the manufacturer to confirm whether the coordinates of point R match the coordinates of point H. The position of the forward vision measuring device is adjusted in real time by adjusting the position of the driver's seat until it matches the coordinates provided by the manufacturer. Turn on the light source.