Etc regulating device

Abstract

An ETC adjusting device comprises a first adjusting mechanism and a second adjusting mechanism, the first adjusting mechanism comprises a guide rail, a sliding seat and a first driving member, the sliding seat is arranged on the guide rail, and the first driving member is connected with the sliding seat and drives the sliding seat to move along the guide rail; the second adjusting mechanism comprises a second driving member and an ETC antenna, the second driving member is arranged on the sliding seat, and an output shaft of the second driving member is connected with the ETC antenna and drives the ETC antenna to rotate.In the application, through the cooperation of the first adjusting mechanism and the second adjusting mechanism, the position adjustment and the angle adjustment of the ETC antenna on the guide rail are realized, and the adaptability of the ETC antenna is improved.Meanwhile, through the first adjusting mechanism driving the sliding seat to move along the guide rail and the second adjusting mechanism driving the ETC antenna to rotate, the position and the angle of the ETC antenna are automatically adjusted, manual high-altitude operation is not needed, and the adjusting efficiency is improved, the safety risk and the labor cost are reduced.

Description

Technical Field

[0001] This application relates to the field of intelligent transportation equipment technology, specifically to an ETC adjustment device. Background Technology

[0002] With the rapid development of intelligent transportation, Electronic Toll Collection (ETC) systems are widely used in modern transportation. ETC systems utilize Automatic Vehicle Identification (AVI) technology to achieve wireless data communication between vehicles and toll stations, enabling automatic vehicle identification and toll data exchange. The ETC system mainly consists of onboard electronic tags and ETC antennas installed in ETC lanes, achieving non-stop toll collection through microwave communication.

[0003] In existing technologies, especially in mixed lane applications combining ETC systems and self-service devices, the transaction success rate of ETC vehicles in self-service mode is significantly reduced when the self-service device is far from the toll booth but close to the ETC antenna. To address this issue, the common practice is to install two rear-mounted ETC antennas. This not only wastes equipment resources but also increases system complexity and maintenance costs. Furthermore, the current method of adjusting the position and orientation of ETC antennas relies entirely on manual operation, requiring the use of aerial work platforms and other equipment for high-altitude work. This not only introduces safety risks but also increases labor and equipment costs, while the accuracy and efficiency of manual adjustments are low. Utility Model Content

[0004] The purpose of this application is to provide an ETC adjustment device to solve the problems of low adjustment efficiency and high maintenance cost of ETC antennas.

[0005] To achieve the objectives of this application, the following technical solution is provided:

[0006] In a first aspect, this application provides an ETC adjustment device, comprising:

[0007] The first adjustment mechanism includes a guide rail, a slide block and a first driving member. The slide block is disposed on the guide rail, and the first driving member is connected to the slide block and drives the slide block to move along the guide rail.

[0008] The second adjustment mechanism includes a second driving member and an ETC antenna. The second driving member is disposed on the slide, and the output shaft of the second driving member is connected to the ETC antenna and drives the ETC antenna to rotate.

[0009] In one embodiment, the guide rail extends along a first direction, and the output shaft of the second drive extends along a second direction, wherein the first direction is perpendicular to the second direction.

[0010] In one embodiment, the first adjusting mechanism further includes a driving wheel, a driven wheel, and a transmission belt. The driving wheel is connected to a first end of the guide rail in a first direction, the driven wheel is connected to a second end of the guide rail in the first direction, and the transmission belt is wound around the driving wheel and the driven wheel.

[0011] The first driving member is connected to the driving wheel and drives the driving wheel to rotate, and the slide is connected to the transmission belt.

[0012] In one embodiment, the slide includes a base and a slider. The base is provided with mounting holes and receiving grooves at intervals. The guide rail is inserted into the mounting hole, and the slider is disposed on the wall of the mounting hole.

[0013] At least a portion of the second drive unit is housed in the receiving slot, and the output shaft of the second drive unit extends out of the receiving slot and is connected to the ETC antenna.

[0014] In one embodiment, the ETC antenna includes a first end face and a second end face disposed opposite to each other, the first end face is provided with a connecting shaft, and the connecting shaft is connected to the output shaft of the second driving member;

[0015] The axis of the connecting shaft is parallel to the first end face, and the connecting shaft is coaxially arranged with the output shaft of the second driving component.

[0016] In one embodiment, the ETC adjustment device further includes a mounting bracket, a first end of which is used to connect to an external structure, and a second end of which is connected to the guide rail;

[0017] The first adjustment mechanism further includes a housing, which is disposed on the mounting frame, and the first drive component is housed in the housing.

[0018] In one embodiment, the first adjustment mechanism further includes a cable bracket and a tank chain. The cable bracket is mounted on the mounting frame, a first end of the tank chain is connected to the slide block, a second end of the tank chain is connected to the housing, and the tank chain contains a data cable and a power supply cable connected to the ETC antenna.

[0019] In one embodiment, the mounting bracket includes a first support rod and a second support rod. A first end of the first support rod is used to connect to an external structure, and a first end of the second support rod is connected to the guide rail. The second end of the first support rod and the second end of the second support rod are telescopically connected to adjust the distance between the first end of the first support rod and the guide rail.

[0020] In one embodiment, the mounting bracket further includes a fastener, the first support rod is provided with a plurality of first connecting holes, the second support rod is provided with a slot and a plurality of second connecting holes communicating with the slot, the second end of the first support rod is inserted into the slot, and the fastener is inserted into one of the first connecting holes and one of the second connecting holes.

[0021] In one embodiment, the mounting bracket further includes a clamp, which is connected to the first support rod and forms a clamping space to accommodate the external structure.

[0022] Compared with the prior art, this application has at least the following beneficial effects:

[0023] 1. In this application, the position and angle of the ETC antenna on the guide rail are adjusted through the coordinated action of the first and second adjustment mechanisms. The first adjustment mechanism allows the ETC antenna to move on the guide rail to adapt to changes in lane width and vehicle parking position; the second adjustment mechanism allows the ETC antenna to rotate, adjusting its transmitting and receiving signal angles to better communicate with the OBU on the vehicle. This improves the adaptability of the ETC antenna, enabling it to accurately capture vehicle information in various complex traffic scenarios and ensuring the normal operation of the ETC system.

[0024] 2. In this application, the first adjustment mechanism drives the slide to move along the guide rail, and the second adjustment mechanism drives the ETC antenna to rotate, thereby realizing the automatic adjustment of the position and angle of the ETC antenna. This eliminates the need for manual high-altitude operation and has the advantages of improving adjustment efficiency, reducing safety risks and labor costs.

[0025] 3. In this application, because the ETC antenna can be adjusted horizontally and at an angle according to actual conditions, it can always maintain the optimal communication posture with the vehicle's OBU. During vehicle operation, the vehicle's position and angle may change. By adjusting the position and angle of the ETC antenna in a timely manner, stable signal transmission can be ensured, signal attenuation and interference can be reduced, thereby improving the reliability and success rate of communication. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a perspective view of an ETC adjustment device according to one embodiment of this application;

[0028] Figure 2 This is a front view of an ETC regulating device according to one embodiment of this application;

[0029] Figure 3 An exploded view of a portion of the structure of an ETC regulating device according to one embodiment of this application;

[0030] Figure 4 This is an exploded view of the second adjusting mechanism according to one embodiment of this application;

[0031] Figure 5 This is an exploded view of a mounting bracket according to one embodiment of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100. First adjustment mechanism; 110. Guide rail; 120. Slide; 121. Seat body; 122. Slider; 123. Mounting hole; 124. Receiving groove; 130. First driving component; 140. Driving wheel; 150. Driven wheel; 160. Housing; 170. Cable bracket; 180. Tank chain; 200. Second adjustment mechanism; 210. Second driving component; 220. ETC antenna; 221. First end face; 222. Second end face; 230. Connecting shaft; 300. Mounting bracket; 310. First support rod; 311. First connecting hole; 320. Second support rod; 321. Slot; 322. Second connecting hole; 330. Fastener; 340. Clamp; 400. External structure; X, First direction; Y, Second direction. Detailed Implementation

[0034] The following are specific embodiments of this application, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of this application. However, this application is not limited to these embodiments.

[0035] refer to Figure 1 , Figure 2 and Figure 3 This application provides an ETC adjustment device, including a first adjustment mechanism 100 and a second adjustment mechanism 200.

[0036] The first adjustment mechanism 100 includes a guide rail 110, a slide 120, and a first driving member 130. The slide 120 is mounted on the guide rail 110, and the first driving member 130 is connected to the slide 120 and drives the slide 120 to move along the guide rail 110. The guide rail 110 serves as the track for the slide 120 to move, providing a stable motion path for the slide 120 and ensuring that the slide 120 can move in a predetermined linear direction. The slide 120 is a component connecting the first driving member 130 and the second adjustment mechanism 200. The slide 120 can slide on the guide rail 110, converting the power of the first driving member 130 into its own linear motion, and driving the second adjustment mechanism 200 to move as a whole. At the same time, the slide 120 also provides a mounting platform for the second adjustment mechanism 200. The first driving element 130 provides power for the movement of the slide 120 on the guide rail 110. By connecting with the slide 120, it drives the slide 120 to move linearly along the guide rail 110. The first driving element 130 is the key power source for realizing the horizontal position adjustment of the ETC antenna.

[0037] The second adjustment mechanism 200 includes a second driving component 210 and an ETC antenna 220. The second driving component 210 is mounted on a slide 120. The output shaft of the second driving component 210 is connected to the ETC antenna 220 and drives the ETC antenna 220 to rotate. The second driving component 210 provides power for the rotation of the ETC antenna. By connecting its output shaft to the ETC antenna, it drives the ETC antenna to rotate around the output shaft, thereby adjusting the angle of the ETC antenna. The second driving component 210 can be a servo motor or a stepper motor. The ETC antenna is the core component of the ETC system, responsible for wireless communication with the OBU (On-Board Unit) in the vehicle, enabling functions such as reading vehicle information and transmitting transaction data. It transmits and receives microwave signals of specific frequencies through the ETC antenna to establish a communication link with the OBU.

[0038] In this application, the position and angle of the ETC antenna on the guide rail 110 are adjusted through the coordinated action of the first adjustment mechanism 100 and the second adjustment mechanism 200. The first adjustment mechanism 100 allows the ETC antenna to move on the guide rail 110 to adapt to changes in lane width and vehicle parking position; the second adjustment mechanism 200 allows the ETC antenna to rotate, adjusting its transmitting and receiving signal angles for better communication with the OBU on the vehicle, improving the adaptability of the ETC antenna and enabling it to accurately capture vehicle information in various complex traffic scenarios, ensuring the normal operation of the ETC system. Simultaneously, by driving the slide 120 to move along the guide rail 110 through the first adjustment mechanism 100 and driving the ETC antenna 220 to rotate through the second adjustment mechanism 200, the position and angle of the ETC antenna 220 are automatically adjusted, eliminating the need for manual high-altitude operation and offering advantages such as improved adjustment efficiency, reduced safety risks, and lower labor costs.

[0039] In this embodiment, the guide rail 110 extends along a first direction X, and the output shaft of the second drive member 210 extends along a second direction Y, with the first direction X and the second direction Y being perpendicular. The first direction X is the extension direction of the guide rail 110, which can be implemented using a horizontally arranged straight track to define the trajectory of the slide 120. The second direction Y is the axial direction of the drive shaft, which can be arranged horizontally and longitudinally perpendicular to the guide rail 110 to drive the ETC antenna 220 to rotate around its axis. The geometric relationship of the first direction X and the second direction Y being perpendicular allows the horizontal movement of the slide 120 and the rotational movement of the ETC antenna 220 to form a spatially orthogonal coordinate system, enabling independent adjustment of the position and angle of the ETC antenna 220.

[0040] Specifically, when the slide 120 moves laterally along the guide rail 110, it drives the second drive component 210 to move as a whole. At this time, the second drive component 210 drives the ETC antenna 220 to adjust its pitch angle through the output shaft. Since the two directions of movement are orthogonal, the horizontal displacement adjustment and pitch angle adjustment of the antenna do not interfere with each other. The position of the slide 120 can be independently controlled by the first drive component 130, and the antenna tilt angle can be independently controlled by the second drive component 210. This achieves a composite movement of the antenna in the horizontal and vertical planes, allowing the antenna to move horizontally to change the coverage area and rotate to adjust the signal transmission angle, effectively improving the transaction success rate of ETC vehicles and avoiding the waste of resources caused by installing multiple antennas. Moreover, the entire adjustment process does not require the use of a ladder truck; the multi-dimensional precise adjustment of the ETC antenna 220 can be completed through ground operation.

[0041] The first adjusting mechanism 100 further includes a driving wheel 140, a driven wheel 150, and a transmission belt (not shown). The driving wheel 140 is connected to the first end of the guide rail 110 in the first direction X, and the driven wheel 150 is connected to the second end of the guide rail 110 in the first direction X. The transmission belt is wound around the driving wheel 140 and the driven wheel 150. The first driving member 130 is connected to the driving wheel 140 and drives the driving wheel 140 to rotate. The slide 120 is connected to the transmission belt. The driving wheel 140 is a mechanical component capable of transmitting rotational power, and its rotation is achieved through the power input of the first driving member 130. The driven wheel 150 is a component that cooperates with the driving wheel 140 to transmit power, and it forms a closed transmission circuit with the driving wheel 140 through the transmission belt. The transmission belt is a flexible transmission element, specifically a synchronous belt or a toothed belt, which transmits power by forming a closed-loop structure by being wound around the driving wheel 140 and the driven wheel 150. The connection between the slide 120 and the transmission belt can be achieved through a clamping mechanism or a fixing buckle, so that the linear motion of the transmission belt is converted into the translation of the slide 120 along the guide rail 110.

[0042] Specifically, when the drive wheel 140 is driven to rotate by the first drive member 130, the transmission belt forms a cyclic motion between the drive wheel 140 and the driven wheel 150. The slide 120, through its rigid connection with the transmission belt, generates linear displacement along the guide rail 110 in the first direction X as the transmission belt moves. This application, through a belt drive structure, utilizes the flexibility of the transmission belt to achieve precise, low-noise, and smooth movement of the slide 120 along the guide rail 110, solving the technical problems of low debugging efficiency and high maintenance costs associated with traditional mechanical transmission structures. Furthermore, the closed-loop design of the transmission belt further improves the reliability of power transmission, avoiding positioning deviations caused by loose transmission components, thereby ensuring stable adjustment of the ETC antenna 220 under complex operating conditions.

[0043] refer to Figure 2 , Figure 3 and Figure 4 The slide 120 includes a base 121 and a slider 122. The base 121 has mounting holes 123 and receiving grooves 124 spaced apart. A guide rail 110 is inserted into the mounting hole 123, and the slider 122 is disposed on the wall of the mounting hole 123. At least a portion of the second drive member 210 is housed in the receiving groove 124, and the output shaft of the second drive member 210 extends out of the receiving groove 124 and connects to the ETC antenna 220. Specifically, the guide rail 110 is positioned and connected to the slide 120 by being inserted into the mounting hole 123. The slider 122 contacts the surface of the guide rail 110 to form a sliding pair, ensuring that the slide 120 moves smoothly along the guide rail 110. The housing portion of the second drive member 210 is embedded in the receiving groove 124 and fixed by bolts or clips. Its output shaft passes through an opening in the side wall of the receiving groove 124 and connects to the ETC antenna 220. This structure allows the mounting position of the second drive component 210 to be integrated with the slide block 120, avoiding structural instability caused by external overhang.

[0044] In one embodiment, the ETC antenna 220 includes a first end face 221 and a second end face 222 disposed opposite to each other. A connecting shaft 230 is provided on the first end face 221, and the connecting shaft 230 is connected to the output shaft of a second driving member 210. The axis of the connecting shaft 230 is parallel to the first end face 221, and the connecting shaft 230 and the output shaft of the second driving member 210 are coaxially arranged. Specifically, the ETC antenna 220 is rigidly connected to the output shaft of the second driving member 210 through the connecting shaft 230. When the second driving member 210 is activated, the output shaft drives the connecting shaft 230 to rotate around its axis, thereby driving the ETC antenna 220 to rotate as a whole. Because the axis of the connecting shaft 230 is parallel to the first end face 221 and remains coaxial with the output shaft, the antenna will not tilt or deviate during rotation, ensuring precise control of the microwave signal transmission direction. For example, torque can be transmitted between the connecting shaft 230 and the output shaft through a keyway fit or a spline structure, further reducing transmission clearance.

[0045] The ETC adjustment device also includes a mounting bracket 300, with one end connected to an external structure 400 and the other end connected to a guide rail 110. The first adjustment mechanism 100 also includes a housing 160 mounted on the mounting bracket 300, with the first drive component 130 housed within it. Specifically, the first end of the mounting bracket 300 can be fixedly connected to the external structure 400, such as a column or beam of a toll booth, via bolts or clips, while the second end is connected to the guide rail 110 via welding or a flange, forming an integral support frame. The housing 160 is fixed to the side or bottom of the mounting bracket 300, and the first drive component 130, such as a stepper motor or servo motor, is installed inside, linked to the slide 120 via a transmission mechanism. During adjustment, when the first drive component 130 drives the slide 120 to move along the guide rail 110, the housing 160 prevents external environmental corrosion of the drive component and reduces the impact of mechanical vibration on transmission accuracy.

[0046] refer to Figure 1 and Figure 5 The first adjustment mechanism 100 also includes a cable bracket 170 and a tank chain 180. The cable bracket 170 is mounted on the mounting frame 300. The first end of the tank chain 180 is connected to the slide 120, and the second end of the tank chain 180 is connected to the housing 160. The tank chain 180 contains data cables and power cables that connect to the ETC antenna 220. Specifically, the cable bracket 170 is installed at a predetermined position on the mounting frame 300. One end of the tank chain 180 is fixedly connected to the side of the slide 120 by a buckle or bolt, and the other end extends to the side wall of the housing 160 and is fixed by a flange. The data cable and power cable are led out from inside the housing 160 and pass through the channel of the tank chain 180, extending along the tank chain 180 to the slide 120 and completing the electrical connection with the ETC antenna 220. When the first drive member 130 drives the slide 120 to move along the guide rail 110, the tank chain 180 bends or stretches synchronously with the displacement of the slide 120. The gap between its links allows the cable to remain slack during movement, avoiding breakage due to stretching or twisting.

[0047] Furthermore, the mounting bracket 300 includes a first support rod 310 and a second support rod 320. The first end of the first support rod 310 is connected to the external structure 400, and the first end of the second support rod 320 is connected to the guide rail 110. The second ends of the first support rod 310 and the second support rod 320 are telescopically connected to adjust the distance between the first end of the first support rod 310 and the guide rail 110. After the first support rod 310 of the mounting bracket 300 is connected to the external structure 400, the relative position of the second support rod 320 to the first support rod 310 is adjusted via the telescopic connection structure, thereby changing the installation distance of the guide rail 110 relative to the external structure 400. When it is necessary to adjust the installation height of the ETC antenna 220, the connection between the first support rod 310 and the second support rod 320 can be loosened manually or with tools, moved along the telescopic direction to the target position, and then re-fixed. For example, in scenarios where the self-service equipment is far from the toll booth, the installation position of the ETC antenna 220 can be optimized by shortening the overall length of the first support rod 310 and the second support rod 320 to bring the guide rail 110 closer to the external structure 400.

[0048] The mounting bracket 300 also includes a fastener 330. The first support rod 310 has multiple first connecting holes 311, and the second support rod 320 has a slot 321 and multiple second connecting holes 322 communicating with the slot 321. The second end of the first support rod 310 is inserted into the slot 321, and the fastener 330 is inserted into one of the first connecting holes 311 and one of the second connecting holes 322. Specifically, after the first support rod 310 is inserted into the slot 321 of the second support rod 320, the relative positions of the two are adjusted to align the first connecting hole 311 with the second connecting hole 322. Then, the fastener 330 is passed through the selected hole to complete the fixation. When it is necessary to adjust the overall length of the mounting bracket 300, simply release the fastener 330, slide the first support rod 310 to the target position, and reinsert the fastener 330 to achieve quick positioning, improving the adaptability of the mounting bracket 300 to different scenarios.

[0049] In one embodiment, the mounting bracket 300 further includes a clamp 340, which is connected to the first support rod 310 and forms a clamping space to accommodate the external structure 400. Specifically, the mounting bracket 300 is connected to the external structure 400 through the cooperation of the clamp 340 and the first support rod 310. During installation, after the clamp 340 surrounds the external structure 400, its tightness is adjusted by a nut to make the clamping space fit snugly against the surface of the external structure 400. The clamp 340 structure effectively avoids structural damage caused by traditional welding or bolt fixing, while simplifying the fine-tuning operation after installation, thus improving the debugging efficiency of the ETC antenna 220.

[0050] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0051] Furthermore, the use of terms such as "first," "second," and "a" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0052] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.

Claims

1. An ETC adjustment device, characterized in that, include: The first adjustment mechanism includes a guide rail, a slide block and a first driving member. The slide block is disposed on the guide rail, and the first driving member is connected to the slide block and drives the slide block to move along the guide rail. The second adjustment mechanism includes a second driving member and an ETC antenna. The second driving member is disposed on the slide, and the output shaft of the second driving member is connected to the ETC antenna and drives the ETC antenna to rotate.

2. The ETC adjustment device according to claim 1, characterized in that, The guide rail extends along a first direction, and the output shaft of the second drive extends along a second direction, wherein the first direction is perpendicular to the second direction.

3. The ETC adjustment device according to claim 2, characterized in that, The first adjustment mechanism further includes a driving wheel, a driven wheel, and a transmission belt. The driving wheel is connected to a first end of the guide rail in a first direction, the driven wheel is connected to a second end of the guide rail in the first direction, and the transmission belt is wound around the driving wheel and the driven wheel. The first driving member is connected to the driving wheel and drives the driving wheel to rotate, and the slide is connected to the transmission belt.

4. The ETC adjustment device according to claim 3, characterized in that, The slide includes a base and a slider. The base is provided with mounting holes and receiving grooves at intervals. The guide rail is inserted into the mounting hole, and the slider is disposed on the wall of the mounting hole. At least a portion of the second drive unit is housed in the receiving slot, and the output shaft of the second drive unit extends out of the receiving slot and is connected to the ETC antenna.

5. The ETC adjustment device according to claim 4, characterized in that, The ETC antenna includes a first end face and a second end face disposed opposite to each other. A connecting shaft is provided on the first end face, and the connecting shaft is connected to the output shaft of the second driving component. The axis of the connecting shaft is parallel to the first end face, and the connecting shaft is coaxially arranged with the output shaft of the second driving component.

6. The ETC adjustment device according to claim 1, characterized in that, The ETC adjustment device also includes a mounting bracket, the first end of which is used to connect to an external structure, and the second end of which is connected to the guide rail; The first adjustment mechanism further includes a housing, which is disposed on the mounting frame, and the first drive component is housed in the housing.

7. The ETC adjustment device according to claim 6, characterized in that, The first adjustment mechanism also includes a cable bracket and a tank chain. The cable bracket is mounted on the mounting frame. The first end of the tank chain is connected to the slide block, and the second end of the tank chain is connected to the housing. The tank chain contains a data cable and a power supply cable connected to the ETC antenna.

8. The ETC adjustment device according to claim 6, characterized in that, The mounting bracket includes a first support rod and a second support rod. The first end of the first support rod is used to connect to an external structure, and the first end of the second support rod is connected to the guide rail. The second end of the first support rod and the second end of the second support rod are telescopically connected to adjust the distance between the first end of the first support rod and the guide rail.

9. The ETC adjustment device according to claim 8, characterized in that, The mounting bracket further includes fasteners. The first support rod is provided with a plurality of first connecting holes, and the second support rod is provided with a slot and a plurality of second connecting holes communicating with the slot. The second end of the first support rod is inserted into the slot, and the fastener is inserted into one of the first connecting holes and one of the second connecting holes.

10. The ETC adjustment device according to claim 8, characterized in that, The mounting frame also includes a clamp, which is connected to the first support rod and forms a clamping space to accommodate the external structure.

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