ETC receiving antenna

Abstract

The utility model discloses an ETC receiving antenna, and relates to the radio frequency communication technology field, the ETC receiving antenna comprises a receiving antenna body, an anti-signal interference mechanism and a metal box, the anti-signal interference mechanism is arranged on the outer side of the receiving antenna body, the anti-signal interference mechanism comprises a fixed column, a shielding cover, a signal filter and a wave absorbing material, the fixing columns are fixedly installed on the left side and the right side of the receiving antenna body, the shielding cover is fixedly installed on the outer sides of the fixing columns, the signal filter is fixedly installed on the back face of the metal box, and the wave absorbing material is laid on the top of the receiving antenna body. According to the ETC receiving antenna, by arranging the signal interference prevention mechanism, the stable operation capability, the anti-interference performance and the signal processing efficiency of the ETC receiving antenna can be effectively improved in the using process of the device, it is ensured that the device can correctly and rapidly receive and process signals sent by vehicles in the using process, and accurate and efficient operation of an ETC system is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of radio frequency communication, and in particular relates to an ETC receiving antenna. Background Art

[0002] The ETC receiving antenna mainly involves wireless communications, radio frequency technology and traffic informatization. This antenna is used to receive radio frequency signals emitted by the ETC system carried on the vehicle, communicate with the road toll collection system, realize automatic vehicle identification and complete toll collection. The ETC receiving antenna receives and analyzes radio frequency signals, and transmits information to the background system for processing. It is an indispensable and important part of the ETC system.

[0003] The currently existing ETC receiving antenna does not have an anti-signal interference mechanism. It is easily interfered by signals from other wireless devices in the surrounding environment, resulting in a decrease in the quality of the receiving antenna signal or even loss of it, affecting the vehicle's automatic toll collection experience. At the same time, frequent signal interference will reduce the system stability of the ETC receiving antenna device, causing system crashes, communication interruptions and other problems, affecting the operating efficiency and reliability of the entire ETC system. Utility Model Content

[0004] The technical problem to be solved by the utility model is: it lacks an anti-signal interference mechanism, is easily interfered by signals from other wireless devices in the surrounding environment, resulting in a decrease in the quality of the receiving antenna signal or even loss, affecting the automatic charging experience of the vehicle.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an ETC receiving antenna, including a receiving antenna body, an anti-signal interference mechanism and a metal box, the anti-signal interference mechanism is arranged on the outside of the receiving antenna body, the anti-signal interference mechanism includes a fixing column, a shielding cover, a signal filter and an absorbing material, the fixing column is fixedly installed on the left and right sides of the receiving antenna body, the shielding cover is fixedly installed on the outside of the fixing column, the signal filter is fixedly installed on the back of the metal box, and the absorbing material is laid on the top of the receiving antenna body.

[0006] As a preferred technical solution of the present invention, the inner cavity of the metal box is provided with a radio frequency mechanism, and the radio frequency mechanism includes an antenna element, a radio frequency filter, a low noise amplifier, a standing wave ratio matcher, a radio frequency switch, a radio frequency amplifier and a radio frequency modem, and the antenna element is fixedly mounted on the top of the receiving antenna body.

[0007] As a preferred technical solution of the utility model, the radio frequency filter is fixedly installed at the bottom of the right side of the inner cavity of the metal box, and the low noise amplifier is fixedly installed at the right side of the inner cavity of the metal box.

[0008] As a preferred technical solution of the utility model, the standing wave ratio matcher is fixedly installed in the inner cavity of the metal box, and the radio frequency switch is movably connected to the top of the right side of the inner cavity of the metal box.

[0009] As a preferred technical solution of the utility model, the radio frequency amplifier is fixedly installed at the bottom of the left side of the inner cavity of the metal box, and the radio frequency modem is fixedly installed at the top of the left side of the inner cavity of the metal box.

[0010] As a preferred technical solution of the present invention, a mounting mechanism is provided at the bottom of the metal box, and the mounting mechanism includes a mounting plate and fixing bolts. The mounting plate is fixedly installed at the bottom of the metal box, and the fixing bolts are threadedly connected to the top of the mounting plate and extend to its bottom.

[0011] As a preferred technical solution of the utility model, the shielding cover is movably connected to the receiving antenna body, and the material of the shielding cover is aluminum alloy or nickel steel.

[0012] As a preferred technical solution of the utility model, a shell is fixedly connected to the outer side of the receiving antenna body, and the shell is made of glass fiber composite material and plastic.

[0013] Compared with the related art, the ETC receiving antenna provided by the utility model has the following beneficial effects:

[0014] 1. This ETC receiving antenna, by setting an anti-signal interference mechanism, can effectively realize that the device has the ability to improve the stable operation capability, anti-interference and signal processing efficiency of the ETC receiving antenna during use, ensure that the device can correctly and quickly receive and process the signals sent by the vehicle during use, and realize the accurate and efficient operation of the ETC system.

[0015] 2. This kind of ETC receiving antenna, by setting up a radio frequency mechanism, can effectively realize the reception, preprocessing and transmission of the ETC receiving antenna signal during the use of the device, so that the device can quickly and accurately identify the signal sent by the vehicle during use, and realize the normal operation of the automatic toll collection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;

[0017] Figure 2 It is a side view of the overall structure provided by the embodiment of the utility model;

[0018] Figure 3 It is a cross-sectional view of the metal box structure provided by an embodiment of the utility model;

[0019] Figure 4It is an exploded diagram of the installation mechanism structure provided by the embodiment of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the receiving antenna body provided by an embodiment of the utility model.

[0021] Explanation of the marks in the figure: 1. Receiving antenna body; 2. Anti-signal interference mechanism; 201. Fixing column; 202. Shielding cover; 203. Signal filter; 204. Absorbing material; 3. RF mechanism; 301. Antenna element; 302. RF filter; 303. Low noise amplifier; 304. Standing wave ratio matcher; 305. RF switch; 306. RF amplifier; 307. RF modem; 4. Installation mechanism; 401. Installation fixing plate; 402. Fixing bolt; 5. Metal box; 6. Housing. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 5 As shown, the utility model provides an ETC receiving antenna, including a receiving antenna body 1, an anti-signal interference mechanism 2 and a metal box 5. The anti-signal interference mechanism 2 is arranged on the outside of the receiving antenna body 1. The anti-signal interference mechanism 2 includes a fixing column 201, a shielding cover 202, a signal filter 203 and an absorbing material 204. The fixing column 201 is fixedly installed on the left and right sides of the receiving antenna body 1, the shielding cover 202 is fixedly installed on the outside of the fixing column 201, the signal filter 203 is fixedly installed on the back of the metal box 5, and the absorbing material 204 is laid on the top of the receiving antenna body 1.

[0024] refer to Figure 1 , Figure 2 , Figure 3 and Figure 5The inner cavity of the metal box 5 is provided with a radio frequency mechanism 3, and the radio frequency mechanism 3 includes an antenna element 301, a radio frequency filter 302, a low noise amplifier 303, a standing wave ratio matcher 304, a radio frequency switch 305, a radio frequency amplifier 306 and a radio frequency modem 307. The antenna element 301 is fixedly installed on the top of the receiving antenna body 1, the radio frequency filter 302 is fixedly installed on the bottom of the right side of the inner cavity of the metal box 5, the low noise amplifier 303 is fixedly installed on the right side of the inner cavity of the metal box 5, the standing wave ratio matcher 304 is fixedly installed in the inner cavity of the metal box 5, the radio frequency switch 305 is movably connected to the top of the right side of the inner cavity of the metal box 5, the radio frequency amplifier 306 is fixedly installed on the bottom of the left side of the inner cavity of the metal box 5, and the radio frequency modem 307 is fixedly installed on the top of the left side of the inner cavity of the metal box 5.

[0025] The above scheme is adopted: through the setting of the antenna element 301, as the core component for receiving and sending radio frequency signals, the radio frequency signal is converted into an electrical signal or the electrical signal is converted into a radio frequency signal; through the setting of the radio frequency filter 302, it is used to filter out signals of irrelevant frequencies and keep the received radio frequency signal pure; through the setting of the low noise amplifier 303, the received radio frequency signal is amplified to enhance the signal strength so as to improve the receiving sensitivity of the antenna; through the setting of the standing wave ratio matcher 304, it is used to improve the standing wave ratio between the antenna and the transmission line to ensure that the radio frequency signal is fully transmitted and reduce the energy reflection loss; through the setting of the radio frequency switch 305, it is used to select the receiving mode or the transmitting mode and control the flow direction of the signal as needed; through the setting of the radio frequency amplifier 306, in the transmitting mode, it is used to amplify the electrical signal into a radio frequency signal of sufficient strength to ensure the reliable transmission of the signal; through the setting of the radio frequency modem 307, during the sending and receiving process, the radio frequency signal is modulated and demodulated to comply with the communication protocol and standard.

[0026] refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 A mounting mechanism 4 is provided at the bottom of the metal box 5, and the mounting mechanism 4 includes a mounting plate 401 and a fixing bolt 402. The mounting plate 401 is fixedly installed at the bottom of the metal box 5, and the fixing bolt 402 is threadedly connected to the top of the mounting plate 401 and extends to its bottom. The shielding cover 202 is movably connected to the receiving antenna body 1, and the shielding cover 202 is made of aluminum alloy or nickel steel. The outer side of the receiving antenna body 1 is fixedly connected with a shell 6, and the material of the shell 6 is glass fiber composite material and plastic.

[0027] The above scheme is adopted: by installing the fixing plate 401 and the fixing bolts 402, the receiving antenna body 1 and related components are fixed to ensure its working stability and improve the receiving performance; by setting the aluminum alloy or nickel steel, it has good conductivity and electromagnetic shielding effectiveness, and effectively protects the receiving antenna device from external signal interference; by setting the outer shell 6, a material with good weather resistance, strong corrosion resistance and good electromagnetic transparency is used as the outer shell 6 of the receiving antenna body 1, which can ensure the stable operation and long-term reliability of the ETC system.

[0028] Working principle:

[0029] When in use, firstly, the mounting plate 401 is threadedly mounted on the toll station gantry or column by the fixing bolt 402, the shielding cover 202 is used to isolate external electromagnetic radiation and interference sources, the signal filter 203 is used to filter irrelevant frequency signals, the absorbing material 204 absorbs electromagnetic wave energy, reduces reflection and scattering, and reduces signal interference, the antenna element 301 receives the radio frequency signal sent from the electronic toll tag on the vehicle and transmits it to the radio frequency filter 302, the radio frequency filter 302 can filter out the signal of irrelevant frequency, and ensure that only the signal within a specific frequency band passes, after the signal is amplified by the low noise amplifier 303, the standing wave ratio matcher 304 ensures the impedance matching of the signal to meet the working requirements of the whole system, the transmission and switching of the signal is controlled by the radio frequency switch 305, the signal is directed to different channels as needed, the signal strength is further amplified by the radio frequency amplifier 306 to reach a sufficient level for subsequent processing, the signal is demodulated and modulated by the radio frequency modem 307, and converted into a digital signal for processing, so as to realize the recognition and recording of vehicle toll information, and finally realize the function of the automatic toll collection system.

[0030] To sum up: the fixed column 201, shielding cover 202, signal filter 203 and absorbing material 204 contained in the anti-signal interference mechanism 2 can enable the device to improve the stable operation capability, anti-interference performance and signal processing efficiency of the ETC receiving antenna during use, ensure that the device can correctly and quickly receive and process the signals sent by the vehicle during use, and realize the accurate and efficient operation of the ETC system. The antenna element 301, RF filter 302, low noise amplifier 303, standing wave ratio matcher 304, RF switch 305, RF amplifier 306 and RF modem 307 contained in the RF mechanism 3 can enable the device to receive, preprocess and transmit the ETC receiving antenna signal during use, thereby enabling the device to quickly and accurately identify the signals sent by the vehicle during use and realize the normal operation of the automatic toll collection system.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or still includes elements that are inherent to such process, method, article or device;

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents;

[0033] The above description only describes the specific implementation methods of the utility model. Various examples do not limit the essential content of the utility model. Ordinary technicians in the relevant technical field can modify or deform the specific implementation methods described above after reading the description without departing from the essence and scope of the utility model.

Claims

1. An ETC receiving antenna, comprising a receiving antenna body (1), an anti-signal interference mechanism (2) and a metal box (5), characterized in that: The anti-signal interference mechanism (2) is arranged on the outside of the receiving antenna body (1), and comprises a fixing column (201), a shielding cover (202), a signal filter (203) and an absorbing material (204); the fixing column (201) is fixedly mounted on the left and right sides of the receiving antenna body (1), the shielding cover (202) is fixedly mounted on the outside of the fixing column (201), the signal filter (203) is fixedly mounted on the back of the metal box (5), and the absorbing material (204) is laid on the top of the receiving antenna body (1).

2. An ETC receiving antenna according to claim 1, characterized in that: The inner cavity of the metal box (5) is provided with a radio frequency mechanism (3), and the radio frequency mechanism (3) comprises an antenna element (301), a radio frequency filter (302), a low noise amplifier (303), a standing wave ratio matcher (304), a radio frequency switch (305), a radio frequency amplifier (306) and a radio frequency modem (307), and the antenna element (301) is fixedly mounted on the top of the receiving antenna body (1).

3. An ETC receiving antenna according to claim 2, characterized in that: The radio frequency filter (302) is fixedly mounted on the bottom of the right side of the inner cavity of the metal box (5), and the low noise amplifier (303) is fixedly mounted on the right side of the inner cavity of the metal box (5).

4. The ETC receiving antenna according to claim 2, characterized in that: The standing wave ratio matcher (304) is fixedly mounted in the inner cavity of the metal box (5), and the radio frequency switch (305) is movably connected to the top of the right side of the inner cavity of the metal box (5).

5. The ETC receiving antenna according to claim 2, characterized in that: The radio frequency amplifier (306) is fixedly mounted on the bottom of the left side of the inner cavity of the metal box (5), and the radio frequency modem (307) is fixedly mounted on the top of the left side of the inner cavity of the metal box (5).

6. The ETC receiving antenna according to claim 1, characterized in that: The bottom of the metal box (5) is provided with a mounting mechanism (4), and the mounting mechanism (4) comprises a mounting fixing plate (401) and a fixing bolt (402). The mounting fixing plate (401) is fixedly mounted on the bottom of the metal box (5), and the fixing bolt (402) is threadedly connected to the top of the mounting fixing plate (401) and extends to the bottom thereof.

7. The ETC receiving antenna according to claim 1, characterized in that: The shielding cover (202) is movably connected to the receiving antenna body (1), and the material of the shielding cover (202) is aluminum alloy or nickel steel.

8. The ETC receiving antenna according to claim 1, characterized in that: The outer side of the receiving antenna body (1) is fixedly connected to a shell (6), and the shell (6) is made of glass fiber composite material and plastic.

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