Vehicle-mounted unit and electronic charging device

Abstract

The utility model relates to a vehicle-mounted unit and an electronic charging device, and the device comprises a vehicle-mounted body which comprises a housing and a circuit board disposed in the housing, and the circuit board is provided with a first installation surface and a second installation surface which are oppositely disposed; the radio frequency module comprises a radio frequency chip, a first radio frequency module arranged corresponding to the first mounting surface and a second radio frequency module arranged corresponding to the second mounting surface, the radio frequency chip is arranged on the first mounting surface or the second mounting surface, and the first radio frequency module and the second radio frequency module are in communication connection with the radio frequency chip; the data processing module is arranged on the first mounting surface or the second mounting surface, the radio frequency signal input end of the data processing module is connected with the radio frequency signal output end of the radio frequency chip, and the radio frequency control end of the data processing module is connected with the control signal input end of the radio frequency chip, so that stable and reliable signal guarantee is provided for vehicle-mounted communication; and efficient and smooth communication between the vehicle-mounted unit and the road test unit is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent transportation, in particular to a vehicle-mounted unit and an electronic charging device. BACKGROUND

[0002] An OBU (On-Board Unit) is the core hardware of an ETC (Electronic Toll Collection) system, and the OBU can establish a microwave communication link (frequency 5.8 GHz) with an RSU (Road Side Unit) through DSRC (Dedicated Short Range Communication) technology to realize vehicle identity recognition, electronic toll collection and non-contact passage.

[0003] However, the communication between the traditional OBU and the RSU has the problem of poor communication sensitivity. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a vehicle-mounted unit and an electronic charging device to solve the problem of poor communication sensitivity between the OBU and the RSU.

[0005] In a first aspect, the present application provides a vehicle-mounted unit, comprising:

[0006] A vehicle-mounted body comprising a shell and a circuit board arranged in the shell, the circuit board having a first mounting surface and a second mounting surface arranged oppositely; a radio frequency module comprising a radio frequency chip, a first radio frequency module arranged corresponding to the first mounting surface, and a second radio frequency module arranged corresponding to the second mounting surface, the radio frequency chip being arranged on the first mounting surface or the second mounting surface, the first radio frequency module and the second radio frequency module being in communication connection with the radio frequency chip; a data processing module arranged on the first mounting surface or the second mounting surface, a radio frequency signal input end of the data processing module being connected with a radio frequency signal output end of the radio frequency chip, and a radio frequency control end of the data processing module being connected with a control signal input end of the radio frequency chip.

[0007] In one of the embodiments, the first radio frequency module comprises a first radio frequency antenna and a first directive antenna coupled with the first radio frequency antenna, a first signal output end of the first radio frequency antenna being connected with a first signal input end of the radio frequency chip, and a first signal input end of the first radio frequency antenna being connected with a first signal output end of the radio frequency signal.

[0008] In one of the embodiments, the first mounting surface is provided with a first mounting slot corresponding to the position of the first radio frequency module, and the inner wall of the shell is formed with a first mounting area corresponding to the position of the first mounting slot; the first radio frequency antenna is embedded in the first mounting slot, and the first directional antenna is mounted on the first mounting area.

[0009] In one of the embodiments, the second radio frequency module comprises a second radio frequency antenna and a second directional antenna coupled with the second radio frequency antenna, the second signal output end of the second radio frequency antenna is connected with the second signal input end of the radio frequency chip, and the second signal input end of the second radio frequency antenna is connected with the second signal output end of the radio frequency signal.

[0010] In one of the embodiments, the second mounting surface is provided with a second mounting slot corresponding to the position of the second radio frequency module, and the inner wall of the shell is formed with a second mounting area corresponding to the position of the second mounting slot; the second radio frequency antenna is embedded in the second mounting slot, and the second directional antenna is mounted on the second mounting area.

[0011] In one of the embodiments, the data processing module is integrated with a master control chip and a wireless communication module, and the master control chip is in communication connection with the radio frequency chip through the wireless communication module.

[0012] In one of the embodiments, further comprising an encryption chip connected with the data processing module, the encryption chip is arranged on the first mounting surface or the second mounting surface, and the verification information interaction port of the encryption chip is connected with the verification information interaction port of the data processing module.

[0013] In one of the embodiments, further comprising a man-machine interaction module, the man-machine interaction module is arranged in the shell, and the man-machine interaction module is connected with the data processing module; the man-machine interaction module comprises a voice chip and a loudspeaker, the voice chip is arranged on the first mounting surface or the second mounting surface, the first sound signal input end of the voice chip is connected with the first sound signal output end of the data processing module, the loudspeaker is fixed on the inner wall of the shell, and the second sound signal input end of the loudspeaker is connected with the second sound signal output end of the voice chip.

[0014] In one of the embodiments, a power management module is further included, which is arranged in the shell and connected with the data processing module; the power management module comprises a charging management chip, a battery and a photovoltaic module, a charging signal output end of the charging management chip is connected with a charging signal input end of the battery, an electric signal output end of the photovoltaic module is connected with an electric signal input end of the battery, and the battery is used for supplying power for the radio frequency module and the data processing module.

[0015] In a second aspect, the application provides an electronic charging device, comprising a road test unit and the vehicle-mounted unit as described above, and the road test unit is in communication connection with the vehicle-mounted unit through a short-range communication protocol.

[0016] The vehicle-mounted unit and the electronic charging device described above, the vehicle-mounted unit is arranged with the first radio frequency module on the first mounting surface of the circuit board and the second radio frequency module on the second mounting surface, the first mounting surface and the second mounting surface face different directions, so that the first radio frequency module and the second radio frequency module can realize omnidirectional perception and transceiving function of the radio frequency signal; meanwhile, the first radio frequency module and the second radio frequency module are connected with the radio frequency chip through the feed line combination, and the radio frequency chip is connected with the data processing module, so as to realize processing of the radio frequency signal; after the two-way radio frequency signal is combined, the signal strength can be effectively increased, so as to improve the transmission quality of the signal, reduce signal attenuation and interference, and further facilitate to provide stable and reliable signal guarantee for vehicle-mounted communication, and realize efficient and smooth communication between the vehicle-mounted unit and the road test unit. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The structural block diagram of the vehicle-mounted unit of one embodiment.

[0018] Figure 2 The structural block diagram of the radio frequency module of one embodiment.

[0019] Figure 3 The perspective structural diagram of the vehicle-mounted unit of one embodiment.

[0020] Figure 4 The internal sectional view of the vehicle-mounted unit of one embodiment.

[0021] Figure 5 The exploded view of Figure 3 .

[0022] Figure 6 The control principle diagram of the vehicle-mounted unit of one embodiment.

[0023] Figure 7 The control principle diagram of the power management module of one embodiment.

[0024] Figure 8A structural block diagram of an electronic charging device according to an embodiment.

[0025] Description of the Drawings:

[0026] Vehicle-mounted unit 10, road test unit 20;

[0027] Vehicle-mounted body 100, housing 110, first housing 111, second housing 112, support platform 113, circuit board 120, first mounting surface 121, second mounting surface 122;

[0028] Radio frequency module 200, radio frequency chip 210, first radio frequency module 220, first radio frequency antenna 221, first directional antenna 222, second radio frequency module 230, second radio frequency antenna 231, second directional antenna 232;

[0029] Data processing module 300, main control chip 310, wireless communication module 320;

[0030] Encryption chip 400;

[0031] Man-machine interaction module 500, voice chip 510, loudspeaker 520;

[0032] Power management module 600, charging management chip 610, battery 620, photovoltaic module 630. DETAILED DESCRIPTION

[0033] In order to make the above objectives, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, the terms "first", "second", and the like, if any, are used herein for descriptive purposes only and should not be construed as indicating or implying relative importance or implicating the number of indicated technical features. Thus, a feature defined with "first", "second" may include at least one of the features explicitly or implicitly. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0036] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise explicitly specified and limited, if the first feature is described as "on" or "under" the second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the first feature is lower than the second feature in horizontal height.

[0038] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for the purpose of illustration and do not represent the only implementation.

[0039] In the related art, the OBU usually adopts a single-face radio frequency antenna design. The radio frequency antenna is generally arranged on the front face of the OBU, which is usually the side facing the RSU and cooperates with the antenna pointing device. However, the OBU with a single antenna design has a strong signal only on the front face of the radio frequency antenna, and the signal on the back face is poor due to high loss. In addition, due to the directionality of the radio frequency antenna radiation signal, the OBU is usually installed on the front windshield of the vehicle and is not suitable for installation on the instrument table and other positions. The installation on the windshield not only affects the appearance but also easily causes visual interference.

[0040] Based on this, the embodiment of the present application provides a vehicle-mounted unit 10, as shown in the figure, the vehicle-mounted unit 10 of an embodiment of the present application includes a vehicle-mounted body 100, a radio frequency module 200 and a data processing module 300. Figures 1 to 4 As shown in the figure, the vehicle-mounted unit 10 of an embodiment of the present application includes a vehicle-mounted body 100, a radio frequency module 200 and a data processing module 300.

[0041] The vehicle-mounted body 100 includes a shell 110 and a circuit board 120 arranged in the shell 110. The circuit board 120 has a first mounting surface 121 and a second mounting surface 122 arranged oppositely. The radio frequency module 200 includes a radio frequency chip 210, a first radio frequency module 220 arranged corresponding to the first mounting surface 121 and a second radio frequency module 230 arranged corresponding to the second mounting surface 122. The radio frequency chip 210 is arranged on the first mounting surface 121 or the second mounting surface 122. The first radio frequency module 220 and the second radio frequency module 230 are in communication connection with the radio frequency chip 210. The data processing module 300 is arranged on the first mounting surface 121 or the second mounting surface 122. The radio frequency signal input end of the data processing module 300 is connected with the radio frequency signal output end of the radio frequency chip 210. The radio frequency control end of the data processing module 300 is connected with the control signal input end of the radio frequency chip 210.

[0042] The vehicle-mounted body 100 is used for accommodating the radio frequency module 200 and the data processing module 300 and providing support for the installation of the radio frequency module 200 and the data processing module 300. The vehicle-mounted body 100 can be in contact with any position on the vehicle as the support of the entire vehicle-mounted unit 10 to install the vehicle-mounted unit 10 at any position in the vehicle. Specifically, the circuit board 120 can be realized by a PCB (Printed Circuit Board). The first mounting surface 121 and the second mounting surface 122 are two larger surfaces on the circuit board 120 for bearing the radio frequency module 200 and the data processing module 300.

[0043] In an exemplary embodiment, the housing 110 comprises a first shell 111 and a second shell 112, the first shell 111 covers the second shell 112, and the first shell 111 and the second shell 112 are fixed by a snap structure to form a relatively sealed mounting cavity in the housing 110. A support platform 113 is arranged in the second shell 112, and the circuit board 120 is supported on the support platform 113 and fixed with the support platform 113 by bolts or pins to fix the circuit board 120 in the housing 110. Optionally, one side of the circuit board 120 facing the first shell 111 is defined as a first mounting surface 121, and the other side of the circuit board 120 facing the second shell 112 is defined as a second mounting surface 122. In other embodiments, the other side of the circuit board 120 facing the second shell 112 can be defined as the first mounting surface 121, and the side of the circuit board 120 facing the first shell 111 can be defined as the second mounting surface 122, which is not limited in the present embodiment.

[0044] The first radio frequency module 220 and the second radio frequency module 230 are in communication connection with the radio frequency chip 210, and the radio frequency chip 210 is in communication connection with the data processing module 300. In specific implementation, the radio frequency chip 210 can be implemented by a radio frequency front-end IC (Integrated Circuit) with model number SL1102. The first radio frequency module 220 and the second radio frequency module 230 are used to receive radio frequency signals of corresponding frequencies radiated from the outside (such as the road test unit 20), and send the radio frequency signals to the data processing module 300 through the radio frequency chip 210. At the same time, the first radio frequency module 220 and the second radio frequency module 230 can also receive radio frequency signals of corresponding frequencies sent by the radio frequency chip 210 under the control of the data processing module 300, and radiate the radio frequency signals outward, so as to realize the perception and transceiving of radio frequency signals.

[0045] The first radio frequency module 220 and the second radio frequency module 230 are arranged on both sides of the circuit board 120, i.e. the first radio frequency module 220 is arranged on one side of the first shell 111, and the second radio frequency module 230 is arranged on one side of the second shell 112, so that the first radio frequency module 220 can perceive radio frequency signals radiated from one side of the first shell 111 or radiate radio frequency signals outward to one side of the first shell 111, and the second radio frequency module 230 can perceive radio frequency signals radiated from one side of the second shell 112 or radiate radio frequency signals outward to one side of the second shell 112. In this way, the perception and transceiving of radio frequency signals in all directions of the radio frequency module 200 can be realized, so that the vehicle-mounted unit 10 can stably perceive and transceive radio frequency signals regardless of the position of the vehicle-mounted unit 10 in the vehicle.

[0046] In an optional embodiment, the first radio frequency module 220 and the second radio frequency module 230 can be connected with the radio frequency chip 210 through the feed line after being combined. In this way, after the first radio frequency module 220 and the second radio frequency module 230 receive the radio frequency signals, the two radio frequency signals can be combined into one signal through the feed line, so as to realize the combined output of the radio frequency signals to the radio frequency chip 210. Since the signal frequencies that can be received or radiated by the first radio frequency module 220 and the second radio frequency module 230 in the vehicle-mounted unit 10 are the same and the frequency bands are relatively fixed, the signal strength can be improved after the two radio frequency signals are combined, thereby improving the signal transmission quality.

[0047] For example, when the radio frequency module 200 receives the radio frequency signals, the first radio frequency module 220 and the second radio frequency module 230 can receive the corresponding radio frequency signals in their respective directions, and then output the combined radio frequency signals to the radio frequency chip 210 through the feed line. The radio frequency chip 210 can demodulate and amplify the combined radio frequency signals, and then transmit the radio frequency signals to the radio frequency signal input end of the data processing module 300 through the radio frequency signal output end of the radio frequency chip 210. The data processing module 300 can analyze and process the received radio frequency signals, so as to realize the reception and analysis of the signals, and then realize the communication between the road test unit 20 and the vehicle-mounted unit 10. When the radio frequency module 200 transmits the radio frequency signals, the data processing module 300 can generate radio frequency control signals according to the external data (such as the data transmitted by the road test unit 20), and then transmit the radio frequency control signals to the radio frequency signal control signal input end through the control signal output end of the data processing module 300. The radio frequency chip 210 can generate radio frequency signals according to the radio frequency control signals, and then output the radio frequency signals to the first radio frequency module 220 and the second radio frequency module 230, so as to radiate the radio frequency signals to the outside through the first radio frequency module 220 and the second radio frequency module 230.

[0048] In this embodiment, the vehicle-mounted unit 10 is provided with the first radio frequency module 220 on the first mounting surface 121 of the circuit board 120 and the second radio frequency module 230 on the second mounting surface 122. The first mounting surface 121 and the second mounting surface 122 face different directions, so as to realize the omnidirectional perception and transceiving functions of the first radio frequency module 220 and the second radio frequency module 230. Meanwhile, the first radio frequency module 220 and the second radio frequency module 230 are connected with the radio frequency chip 210 through the feed line after being combined, and the radio frequency chip 210 is connected with the data processing module 300, so as to realize the processing of the radio frequency signals. The signal strength can be effectively increased after the two radio frequency signals are combined, so as to improve the signal transmission quality, reduce the signal attenuation and interference, and then provide stable and reliable signal protection for the vehicle-mounted communication, thereby realizing the efficient and smooth communication between the vehicle-mounted unit 10 and the road test unit 20.

[0049] In one embodiment, the first radio frequency module 220 comprises a first radio frequency antenna 221 and a first directive antenna 222 coupled with the first radio frequency antenna 221, the first signal output end of the first radio frequency antenna 221 is connected with the first signal input end of the radio frequency chip 210, and the first signal input end of the first radio frequency antenna 221 is connected with the first signal output end of the radio frequency signal.

[0050] When the first radio frequency module 220 sends the radio frequency signal outward, the radio frequency chip 210 transmits the radio frequency signal through the first signal output end thereof to the first signal input end of the first radio frequency antenna 221, so that the first radio frequency antenna 221 can transmit the radio frequency signal to the first directive antenna 222 through the coupling effect, and the radio frequency signal is radiated outward through the first directive antenna 222, so that the radio frequency signal can be successfully received by the road test unit 20; when the first radio frequency module 220 receives the externally radiated radio frequency signal, the first directive antenna 222 can receive and converge the externally transmitted radio frequency signal, and transmit the radio frequency signal to the first radio frequency antenna 221 through the coupling effect, and then the radio frequency signal is arranged through the first radio frequency antenna 221, and is transmitted to the first signal input end of the radio frequency chip 210 through the first signal output end thereof, and the radio frequency chip 210 can demodulate and amplify the signal, and then transmit the signal to the data processing module 300 for subsequent processing, to complete the reception of the radio frequency signal.

[0051] Further, the first mounting surface 121 is provided with a first mounting groove (not shown) corresponding to the position of the first radio frequency module 220, and the inner wall of the shell 110 is formed with a first mounting area (not shown) corresponding to the position of the first mounting groove; the first radio frequency antenna 221 is embedded in the first mounting groove, and the first directive antenna 222 is mounted on the first mounting area.

[0052] The first radio frequency antenna 221 can be realized by a microstrip antenna structure, the size of the first mounting groove can match the shape of the first radio frequency antenna 221, so that the first radio frequency antenna 221 can be embedded in the first mounting groove as a whole; and the first radio frequency antenna 221 can be fixed in the first mounting groove by adhesion, welding and other mechanical fixing structures (such as bolts, latches, buckles, etc.), the first signal output end of the first radio frequency antenna 221 can be connected with the first signal input end of the radio frequency chip 210 through the conductive lines printed on the circuit board 120, and the first signal input end of the first radio frequency antenna 221 can also be connected with the first signal output end of the radio frequency chip 210 through the conductive lines printed on the circuit board 120, to realize the bidirectional signal transmission between the first radio frequency antenna 221 and the radio frequency chip 210.

[0053] The first directing antenna 222 can be implemented in a metal sheet structure. A first mounting area matching the size of the first directing antenna 222 can be formed on the side of the first housing 111 facing the first mounting surface 121. The first directing antenna 222 can be fixed in the first mounting area by adhesion, welding, or other mechanical fixing structures (such as bolts, latches, buckles, etc.). The first directing antenna 222 is arranged in parallel with the first radio frequency antenna 221, and the first directing antenna 222 and the first radio frequency antenna 221 are oppositely arranged in a direction perpendicular to the plane of the circuit board 120, so as to ensure that the first directing antenna 222 and the first radio frequency antenna 221 can form a stable coupling effect and ensure stable transmission of radio frequency signals.

[0054] Optionally, the size of the first directing antenna 222 is greater than or equal to the size of the first radio frequency antenna 221. In this way, the receiving range of radio frequency signals can be expanded, and the coupling effect between the first directing antenna 222 and the first radio frequency antenna 221 can be enhanced, which is beneficial to improving the overall signal transceiving performance of the first radio frequency module 220.

[0055] In this embodiment, the first directing antenna 222 coupled with the first radio frequency antenna 221 is arranged, which is beneficial to enhancing the directional transmission capability of radio frequency signals and improving signal gain and receiving sensitivity. Meanwhile, the first radio frequency antenna 221 is embedded in the first mounting groove, and the first directing antenna 222 is mounted in the corresponding first mounting area, which can optimize the layout of the entire first radio frequency module 220, reduce internal interference, and improve space utilization.

[0056] In one embodiment, the second radio frequency module 230 includes a second radio frequency antenna 231 and a second directing antenna 232 coupled with the second radio frequency antenna 231. The second signal output end of the second radio frequency antenna 231 is connected with the second signal input end of the radio frequency chip 210, and the second signal input end of the second radio frequency antenna 231 is connected with the second signal output end of the radio frequency signal.

[0057] When the second radio frequency module 230 sends radio frequency signals outward, the radio frequency chip 210 transmits the radio frequency signals through its second signal output end to the second signal input end of the second radio frequency antenna 231, so that the second radio frequency antenna 231 can transmit the radio frequency signals to the second directional antenna 232 through the coupling effect, and the radio frequency signals are radiated outward through the second directional antenna 232, so that the road test unit 20 can successfully receive the radio frequency signals; when the second radio frequency module 230 receives the externally radiated radio frequency signals, the second directional antenna 232 can receive and converge the externally transmitted radio frequency signals, and transmit the radio frequency signals to the second radio frequency antenna 231 through the coupling effect, and then the radio frequency signals are arranged through the second radio frequency antenna 231, and then transmitted to the second signal input end of the radio frequency chip 210 through its second signal output end. The radio frequency chip 210 can demodulate and amplify the signals, and then transmit them to the data processing module 300 for subsequent processing, to complete the reception of the radio frequency signals.

[0058] Further, the second mounting surface 122 is provided with a second mounting groove (not shown) corresponding to the position of the second radio frequency module 230, and the inner wall of the shell 110 is formed with a second mounting area (not shown) corresponding to the position of the second mounting groove; the second radio frequency antenna 231 is embedded in the second mounting groove, and the second directional antenna 232 is mounted on the second mounting area.

[0059] Similar to the first radio frequency antenna 221, the second radio frequency antenna 231 can also be realized by a microstrip antenna structure, and the size of the second mounting groove can match the shape of the second radio frequency antenna 231, so that the second radio frequency antenna 231 can be embedded in the second mounting groove as a whole; and the second radio frequency antenna 231 can be fixed in the second mounting groove by bonding, welding and other mechanical fixing structures (such as bolts, latches, buckles, etc.), and the second signal output end of the second radio frequency antenna 231 can be connected with the second signal input end of the radio frequency chip 210 through the conductive lines printed on the circuit board 120, and the second signal input end of the second radio frequency antenna 231 can also be connected with the second signal output end of the radio frequency chip 210 through the conductive lines printed on the circuit board 120, to realize the bidirectional signal transmission between the second radio frequency antenna 231 and the radio frequency chip 210.

[0060] Similar to the first directional antenna 222, the second directional antenna 232 can be implemented using a metal sheet structure. A second mounting area adapted to the size of the second directional antenna 232 can be formed on the side of the second housing 112 facing the second mounting surface 122. The second directional antenna 232 can also be fixed in the second mounting area by bonding, welding, or using other mechanical fixing structures (such as bolts, pins, clips, etc.). The second directional antenna 232 is arranged parallel to the second radio frequency antenna 231, and the second directional antenna 232 and the second radio frequency antenna 231 are arranged opposite each other in a direction perpendicular to the plane of the circuit board 120, to ensure that the second directional antenna 232 can form a stable coupling with the second radio frequency antenna 231, and to ensure stable transmission of radio frequency signals.

[0061] Optionally, the size of the second directional antenna 232 is greater than or equal to the size of the second radio frequency antenna 231. This configuration can expand the reception range of radio frequency signals and enhance the coupling effect between the second directional antenna 232 and the second radio frequency antenna 231, which is beneficial to improving the overall signal transmission and reception performance of the second radio frequency module 230.

[0062] In this embodiment, by setting a second directional antenna 232 coupled to the second radio frequency antenna 231, it is beneficial to enhance the directional transmission capability of radio frequency signals, thereby improving signal gain and receiving sensitivity. At the same time, by embedding the second radio frequency antenna 231 in the second mounting slot and installing the second directional antenna 232 in the corresponding second mounting area, the layout of the entire second radio frequency module 230 can be optimized, internal interference can be reduced and space utilization can be improved.

[0063] In one embodiment, such as Figure 1 , Figure 5 and Figure 6 As shown, the data processing module 300 integrates a main control chip 310 and a wireless communication module 320. The main control chip 310 is connected to the radio frequency chip 210 through the wireless communication module 320.

[0064] For example, the main control chip 310 generates corresponding control signals, such as transmission frequency and signal power, according to the externally input control commands, and transmits them to the wireless communication module 320 through the corresponding signal interface. The wireless communication module 320 can be implemented using a Bluetooth module. That is, the wireless communication module 320 can convert the received control signals into Bluetooth wireless signals and send them to the control signal input terminal of the radio frequency chip 210, so that the radio frequency chip 210 can parse the control signals from the received Bluetooth signals, generate corresponding radio frequency signals according to the control signals, and transmit them to the first radio frequency antenna 221 and the second radio frequency antenna 231.

[0065] Optionally, the data processing module 300 can be implemented by an MCU (Microcontroller Unit) integrated with the wireless communication module 320, for example, the data processing module 300 can be implemented by an MCU with a model of CH592X, wherein a Bluetooth module is integrated to increase the integration of the entire vehicle-mounted unit 10. On this basis, the radio frequency chip 210 can also be implemented by a chip supporting Bluetooth communication to realize data interaction between the radio frequency chip 210 and the main control chip 310.

[0066] In other embodiments, the data processing module 300 can also be implemented by a separate main control chip 310 and a wireless communication module 320, and the main control chip 310 and the wireless communication module 320 are packaged into an integrated structure, and after being packaged into one whole, they are installed on the first mounting surface 121 or the second mounting surface 122. For example, the main control chip 310 can be implemented by a control chip with a model of STM32F407, and the wireless communication module 320 can be implemented by a Bluetooth module with a model of nRF52840.

[0067] In this embodiment, by integrating the main control chip 310 and the wireless communication module 320, and realizing the communication connection between the main control chip 310 and the radio frequency chip 210 through the wireless communication module 320, the space utilization on the circuit board 120 can be optimized, the hardware cost and power consumption can be reduced, and the stable operation and efficient data interaction of the vehicle-mounted unit 10 can be ensured.

[0068] In one embodiment, the vehicle-mounted unit 10 further includes an encryption chip 400 connected with the data processing module 300. The encryption chip 400 can be used for security processing of radio frequency signals from the radio frequency module 200 and the data processing module 300, for example, the radio frequency signals can be verified, encrypted, decrypted, etc.

[0069] Further, the encryption chip 400 is arranged on the first mounting surface 121 or the second mounting surface 122, and the verification information interaction port of the encryption chip 400 is connected with the verification information interaction port of the data processing module 300.

[0070] When the road test unit 20 sends a radio frequency signal, the radio frequency module 200 receives the radio frequency signal, and the data processing module 300 or the wireless mode forwards the radio frequency signal to the encryption chip 400. The encryption chip 400 calls the internal encryption algorithm or key to decrypt the radio frequency signal, generates the corresponding decrypted signal, and transmits the decrypted signal from the verification information interaction port of the encryption chip 400 to the verification information interaction port of the data processing module 300. The data processing module 300 obtains and processes the request (such as identity recognition, transaction information) contained in the decrypted signal, and then returns the processing result from the verification information interaction port of the data processing module 300 to the verification information interaction port of the encryption chip 400. The encryption chip 400 encrypts the processing result and forwards it to the radio frequency module 200, which is radiated to the road test unit 20.

[0071] In a specific implementation, the encryption chip 400 can be implemented by using an ESAM (Embedded Secure Access Module) to realize encryption, decryption, and the like of related signals, and to ensure the secure transmission of signals.

[0072] In the embodiment, by setting the encryption chip 400, the encryption chip 400 and the data processing module 300 perform verification information interaction, which can ensure the security of signal transmission.

[0073] In one embodiment, the vehicle-mounted unit 10 further includes a man-machine interaction module 500, which is arranged in the shell 110 and connected with the data processing module 300. The man-machine interaction module 500 can realize information interaction between the user and the vehicle-mounted unit 10, for example, through the man-machine interaction module 500, the user can be fed back the state and information of the vehicle-mounted unit 10.

[0074] Further, the man-machine interaction module 500 includes a voice chip 510 and a loudspeaker 520. The voice chip 510 is arranged on the first mounting surface 121 or the second mounting surface 122. The first sound signal input of the voice chip 510 is connected with the first sound signal output of the data processing module 300. The loudspeaker 520 is fixed on the inner wall of the shell 110. The second sound signal input of the loudspeaker 520 is connected with the second sound signal output of the voice chip 510.

[0075] The first sound signal input end of the voice chip 510 can be used to receive sound signal data transmitted by the data processing module 300 through the first sound signal output end, such as voice prompt instructions, voice information, etc. The voice chip 510 can synthesize, denoise, and convert the sound signal data into an analog audio signal, and then transmit the analog audio signal to the second sound signal input end of the loudspeaker 520 through the second sound signal output end, so that the loudspeaker 520 can convert the analog audio signal into a sound output, such as being transmitted to the vehicle cabin through the sound hole provided on the shell 110 to complete voice prompting to the user.

[0076] In a specific implementation, the voice chip 510 can be implemented by a voice IC with a model number WT588, and the loudspeaker 520 can be implemented by a vehicle-mounted special loudspeaker 520.

[0077] In this embodiment, by arranging the man-machine interaction module 500 in the vehicle-mounted unit 10, the user can be timely prompted about the working status of the vehicle-mounted unit 10 and the payment information in a sound manner, which is beneficial to improving the interactive experience of the user.

[0078] In one embodiment, as shown in Figure 1 , Figure 5 and Figure 7 , the vehicle-mounted unit 10 further includes a power management module 600, the power management module 600 is arranged in the shell 110, and the power management module 600 is connected with the data processing module 300. The power management module 600 is used to supply power for the entire vehicle-mounted unit 10 to ensure that the entire vehicle-mounted unit 10 works normally.

[0079] Further, the power management module 600 includes a charging management chip 610, a storage battery 620, and a photovoltaic module 630. The charging signal output end of the charging management chip 610 is connected with the charging signal input end of the storage battery 620, and the electric signal output end of the photovoltaic module 630 is connected with the electric signal input end of the storage battery 620. The storage battery 620 is used to supply power for the radio frequency module 200 and the data processing module 300.

[0080] The storage battery 620 is used to supply power for the radio frequency module 200 and the data processing module 300, and the encryption chip 400, the man-machine interaction module 500, etc. The charging management chip 610 can charge the storage battery 620. For example, the vehicle-mounted unit 10 can be connected with a power supply (such as a cigarette lighter power supply) on the vehicle, the power supply is input to the charging management chip 610 after being processed by a voltage reduction module, and the charging management chip 610 can charge the storage battery 620 through the charging signal output end. In addition, in the case of sufficient sunlight, the photovoltaic module 630 can also receive sunlight energy, convert the light signal into an electric signal, and charge the storage battery 620 through the electric signal output end to achieve auxiliary charging.

[0081] In a specific implementation, the charging management chip 610 can be implemented by using a charging management IC with a model number of ME4075, the battery 620 can be implemented by using a lithium iron phosphate battery, and the photovoltaic module 630 can be implemented by using a photovoltaic panel.

[0082] In an optional embodiment, the radio frequency chip 210, the data processing module 300, the encryption chip 400, the human-computer interaction module 500, the voice chip 510, and the charging management chip 610 can be integrated on the first mounting surface 121, so as to facilitate centralized wiring on the first mounting surface 121, ensure the stability of signal transmission, and avoid line cross interference; the loudspeaker 520 and the battery 620 can be arranged in the mounting cavity, so as to reasonably utilize the mounting space; and the photovoltaic module 630 can be mounted on a sunny surface outside the shell 110 to efficiently receive light energy.

[0083] In an embodiment, as shown in FIG. 1, Figure 8 In an embodiment, as shown in FIG. 1,

[0084] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but it should be considered that any combination of the technical features does not exist unless it is contradictory. It should be considered that the combination of the technical features is within the scope of the present disclosure.

[0085] The above-described embodiments only express several implementation manners of the present disclosure, and the description is relatively specific and detailed, but it should not be considered as a limitation on the patent scope of the present disclosure. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present disclosure, and these are within the protection scope of the present disclosure. Therefore, the patent protection scope of the present disclosure should be subject to the appended claims.

Claims

1. An in-vehicle unit, characterized by comprising: The application relates to a vehicle-mounted body, which comprises a shell and a circuit board arranged in the shell, the circuit board having oppositely arranged first and second mounting surfaces; a radio frequency module, which comprises a radio frequency chip, a first radio frequency module arranged corresponding to the first mounting surface and a second radio frequency module arranged corresponding to the second mounting surface, the radio frequency chip being arranged on the first or second mounting surface, the first and second radio frequency modules being in communication connection with the radio frequency chip; and a data processing module arranged on the first or second mounting surface, a radio frequency signal input end of the data processing module being connected with a radio frequency signal output end of the radio frequency chip, and a radio frequency control end of the data processing module being connected with a control signal input end of the radio frequency chip. The first radio frequency module comprises a first radio frequency antenna and a first directional antenna coupled with the first radio frequency antenna, a first signal output end of the first radio frequency antenna being connected with a first signal input end of the radio frequency chip, and a first signal input end of the first radio frequency antenna being connected with a first signal output end of the radio frequency signal. A first mounting groove is arranged on the first mounting surface corresponding to the position of the first radio frequency module, a first mounting area is formed on the inner wall of the shell corresponding to the position of the first mounting groove, the first radio frequency antenna is embedded in the first mounting groove, and the first directional antenna is mounted on the first mounting area. The second radio frequency module comprises a second radio frequency antenna and a second directional antenna coupled with the second radio frequency antenna, a second signal output end of the second radio frequency antenna being connected with a second signal input end of the radio frequency chip, and a second signal input end of the second radio frequency antenna being connected with a second signal output end of the radio frequency signal.

2. The car kit of claim 1, wherein, A second mounting groove is arranged on the second mounting surface corresponding to the position of the second radio frequency module, a second mounting area is formed on the inner wall of the shell corresponding to the position of the second mounting groove, the second radio frequency antenna is embedded in the second mounting groove, and the second directional antenna is mounted on the second mounting area.

3. The car kit of claim 2, wherein, The data processing module is integrated with a master control chip and a wireless communication module, the master control chip being in communication connection with the radio frequency chip through the wireless communication module.

4. The car kit of claim 1, wherein, The application further comprises an encryption chip connected with the data processing module, the encryption chip being arranged on the first or second mounting surface, and a verification information interaction port of the encryption chip being connected with a verification information interaction port of the data processing module.

5. The car kit of claim 4, wherein, The application further comprises a man-machine interaction module, the man-machine interaction module being arranged in the shell and being connected with the data processing module.

6. The in-vehicle unit of claim 1, wherein, The man-machine interaction module comprises a voice chip and a loudspeaker, the voice chip being arranged on the first or second mounting surface, a first sound signal input of the voice chip being connected with a first sound signal output end of the data processing module, the loudspeaker being fixed on the inner wall of the shell, and a second sound signal input end of the loudspeaker being connected with a second sound signal output end of the voice chip.

7. The car kit of any one of claims 1 to 6, characterized in that, ​ 8. The car kit of any one of claims 1 to 6, characterized in that ​ ​ 9. The car kit of any one of claims 1 to 6, characterized in that, The power management module is arranged in the shell and connected with the data processing module. The power management module comprises a charging management chip, a battery and a photovoltaic module, a charging signal output end of the charging management chip is connected with a charging signal input end of the battery, an electric signal output end of the photovoltaic module is connected with an electric signal input end of the battery, and the battery is used for power supply of the radio frequency module and the data processing module.

10. An electronic billing device, characterized by The vehicle-mounted unit comprises a road test unit and a vehicle-mounted unit according to any one of claims 1 to 9, and the road test unit is in communication connection with the vehicle-mounted unit through a short-range communication protocol.

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