Multi-functional obu based on beidou and 4g communication

Abstract

The utility model relates to multi -functional OBU based on big dipper and 4G communication, based on traditional double -piece type OBU carries out the design still includes: GNSS module, GNSS module reset unit, acceleration sensor, 4G communication module, 4G communication module reset unit and network state indicating unit and WIFI module. The utility model has the following advantages while guaranteeing the traditional ETC transaction function of OBU, on one hand, the big dipper positioning function is added to OBU, can provide accurate geographic position information for OBU, and the added acceleration sensor can provide data support for subsequent vehicle navigation and position tracking service, on the other hand, through 4G communication module and WIFI module cooperation, OBU can provide high -speed mobile internet access ability and wireless LAN function for vehicle, enriches the network experience of vehicle passenger on high -speed such as entertainment.

Description

Technical Field

[0001] This utility model relates to the field of OBU related technology, and in particular to a multi-functional OBU based on Beidou and 4G communication. Background Technology

[0002] A traditional dual-chip OBU refers to an OBU device that adds a smart card reader / writer function, allowing the insertion of a smart card with an e-wallet or stored-value account to deduct fees from the card. Compared to a single-chip OBU that only has account functionality, it breaks through the traditional limitation of storing an account for payment by adding the function of a smart card reader / writer. This means that drivers can insert a smart card with an e-wallet or stored-value account to have fees deducted from the card.

[0003] However, as the complexity of application scenarios increases, the functionality of traditional dual-chip OBUs becomes insufficient. For example, when driving at high speeds, users may want to conduct high-speed data communication through the OBU to perform operations such as web browsing, video streaming, and online music playback, or provide a backup Wi-Fi hotspot for passengers in the vehicle; in addition, they may want to acquire data such as vehicle location during driving to facilitate subsequent data analysis. Summary of the Invention

[0004] The purpose of this invention is to at least address one of the shortcomings of the existing technology and provide a multi-functional OBU based on BeiDou and 4G communication.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Specifically, a multi-functional OBU based on BeiDou and 4G communication is proposed, including a traditional dual-chip OBU. The traditional dual-chip OBU is used for card deduction to support ETC transactions. The dual-chip OBU also includes:

[0007] The GNSS module is electrically connected to the MCU of the dual-chip OBU and is used to provide geographical location information to the OBU;

[0008] The GNSS module is also equipped with a GNSS module reset unit, which is used to reset the GNSS module when triggered;

[0009] An accelerometer sensor, electrically connected to the MCU, is used to provide acceleration-related data to the OBU;

[0010] The 4G communication module is electrically connected to the MCU and is used to provide networking functionality for the OBU.

[0011] The 4G communication module is also equipped with a 4G communication module reset unit and a network status indicator unit. The 4G communication module reset unit is used to reset the 4G communication module when triggered, and the network status indicator unit is used to indicate the operating status of the 4G communication module.

[0012] The WIFI module is electrically connected to the MCU and is used to provide WIFI functionality to the OBU based on the 4G communication module.

[0013] Furthermore, specifically, the GNSS module is built based on the TAU1113 chip and its peripheral circuits.

[0014] Furthermore, specifically, the circuit structure of the network status indication unit includes,

[0015] Transistor Q6 has its collector connected to one end of resistor R17, the other end of resistor R17 connected to the output of diode D7, and the input of diode D7 connected to the power supply input of the 4G communication module. The base of transistor Q6 is connected to one end of resistors R23 and R25, the other end of resistor R23 is connected to a GPIO port of the MCU, and the other end of resistor R25 is connected to the emitter of transistor Q6 and ground.

[0016] Furthermore, specifically, the accelerometer is constructed based on the ADXL343 or ADXL343-EP and its peripheral circuitry.

[0017] Furthermore, the OBU also includes a system status indication module, used to indicate whether the OBU is working properly. Specifically, the circuit structure of the system status indication module includes...

[0018] Transistor Q1 has its collector connected to one end of resistor R10, the other end of resistor R10 connected to the output of diode D1, and the input of diode D1 connected to the power supply input of the 4G communication module. The base of transistor Q1 is connected to one end of resistors R22 and R24, the other end of resistor R22 is connected to another GPIO port of the MCU, and the other end of resistor R24 ​​is connected to the emitter of transistor Q1 and ground.

[0019] Furthermore, specifically, the circuit structure of the GNSS module reset unit includes,

[0020] The collector of transistor Q14 is connected to the GNSS_RST pin of the TAU1113 chip and one end of capacitor C33. The other end of capacitor C33 is connected to the emitter of transistor Q14 / one end of resistor R53 and ground. The base of transistor Q14 is connected to the other end of resistor R53 and one end of resistor R42. The other end of resistor R42 is connected to the RESET_N pin of the MCU.

[0021] Furthermore, specifically, the circuit structure of the 4G communication module reset unit includes,

[0022] The collector of transistor Q17 is connected to the 4G_RESET pin of the MCU and one end of capacitor C74. The other end of capacitor C74 is connected to the emitter of transistor Q17, one end of resistor R90, and ground. The base of transistor Q17 is connected to the other end of resistor R90 and one end of resistor R89. The other end of resistor R89 ​​is connected to the MCU_4G_RST pin of the MCU.

[0023] Furthermore, specifically, the 4G communication module is equipped with a NANO_SIM card slot, which is used to hold a Nano_SIM card, and the 4G communication function is realized based on the Nano_SIM card and its peripheral circuits.

[0024] This utility model proposes a multi-functional OBU based on BeiDou and 4G communication, and its advantages compared with the existing technology are as follows:

[0025] This utility model proposes a multi-functional OBU based on BeiDou and 4G communication. By adding a GNSS module, a 4G communication module, and a WIFI module to the traditional dual-chip OBU, it not only ensures the traditional ETC transaction function of the OBU but also has the following advantages. On the one hand, it adds BeiDou positioning function to the OBU, which can provide accurate geographical location information. In conjunction with the added accelerometer, it can provide data support for subsequent vehicle navigation and location tracking services. On the other hand, through the cooperation of the 4G communication module and the WIFI module, the OBU can provide vehicles with high-speed mobile Internet access and wireless LAN function, enriching the online experience for vehicle passengers, such as entertainment, on highways. Attached Figure Description

[0026] The above and other features of this disclosure will become more apparent from the detailed description of the embodiments illustrated in conjunction with the accompanying drawings. In the accompanying drawings, the same reference numerals denote the same or similar elements. Obviously, the drawings described below are merely some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort. In the drawings:

[0027] Figure 1 The figure shown is an overall structural block diagram of the multi-functional OBU based on Beidou and 4G communication of this utility model.

[0028] Figure 2 The diagram shown is a circuit schematic of the GNSS module of the multi-functional OBU based on Beidou and 4G communication of this utility model.

[0029] Figure 3 The diagram shown is a circuit schematic of the network status indicator unit in this invention.

[0030] Figure 4 The diagram shown is a circuit schematic of the system status indication module in this utility model.

[0031] Figure 5 The diagram shown is a circuit schematic of the GNSS module reset unit in this invention.

[0032] Figure 6 The diagram shown is a circuit diagram of the 4G communication module reset unit in this utility model.

[0033] Figure 7 The diagram shown is a circuit diagram of the acceleration sensor in this invention. Detailed Implementation

[0034] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0035] Reference Figure 1 Example 1: This utility model proposes a multi-functional OBU based on BeiDou and 4G communication, including a traditional dual-chip OBU. The traditional dual-chip OBU is used for card deduction to support ETC transactions (the power module is the same as the original dual-chip OBU, only requiring corresponding level conversion circuit design). The dual-chip OBU also includes:

[0036] The GNSS module is electrically connected to the MCU of the dual-chip OBU and is used to provide geographical location information to the OBU;

[0037] The GNSS module is also equipped with a GNSS module reset unit, which is used to reset the GNSS module when triggered;

[0038] An accelerometer sensor, electrically connected to the MCU, is used to provide acceleration-related data to the OBU;

[0039] The 4G communication module is electrically connected to the MCU and is used to provide networking functionality for the OBU.

[0040] The 4G communication module is also equipped with a 4G communication module reset unit and a network status indicator unit. The 4G communication module reset unit is used to reset the 4G communication module when triggered, and the network status indicator unit is used to indicate the operating status of the 4G communication module.

[0041] The WIFI module is electrically connected to the MCU and is used to provide WIFI functionality to the OBU based on the 4G communication module.

[0042] In this embodiment 1, by adding a GNSS module, a 4G communication module, and a WIFI module to the traditional dual-chip OBU, the traditional ETC transaction function of the OBU is guaranteed, while also having the following advantages. On the one hand, the addition of Beidou positioning function to the OBU can provide accurate geographical location information for the OBU. In conjunction with the added accelerometer, it can provide data support for subsequent vehicle navigation and location tracking services. On the other hand, through the cooperation of the 4G communication module and the WIFI module, the OBU can provide vehicles with high-speed mobile Internet access and wireless LAN function, enriching the network experience of vehicle passengers for entertainment and other purposes on the highway.

[0043] Reference Figure 2 In a preferred embodiment of this utility model, the GNSS module is specifically constructed based on the TAU1113 chip and its peripheral circuits.

[0044] In this preferred embodiment, considering the advantages of TAU1113 such as multi-mode support, low power consumption, high integration, and cost optimization, it is an ideal choice for fields such as the Internet of Things, asset tracking, and vehicle navigation. Its simple peripheral circuitry and strong compatibility further reduce the development threshold and mass production costs, making it suitable for GNSS applications sensitive to size, power consumption, and price. Therefore, the TAU1113 chip is selected to construct the GNSS module.

[0045] Reference Figure 3 As a preferred embodiment of this utility model, specifically, the circuit structure of the network status indication unit includes,

[0046] Transistor Q6 has its collector connected to one end of resistor R17, the other end of resistor R17 connected to the output of diode D7, and the input of diode D7 connected to the power supply input of the 4G communication module. The base of transistor Q6 is connected to one end of resistors R23 and R25, the other end of resistor R23 is connected to a GPIO port of the MCU, and the other end of resistor R25 is connected to the emitter of transistor Q6 and ground.

[0047] In this preferred embodiment, considering the visualization issue, the network status indicator unit is constructed with the above circuit structure, which allows the network status of the 4G communication module to be seen intuitively by observing the illumination status of the light-emitting diode D7.

[0048] Reference Figure 7 In a preferred embodiment of this utility model, the accelerometer is specifically constructed based on ADXL343 or ADXL343-EP and its peripheral circuitry.

[0049] In this preferred embodiment, the accelerometer constructed as described above can accurately acquire real-time acceleration data for subsequent analysis.

[0050] Reference Figure 4 In a preferred embodiment of this utility model, the OBU further includes a system status indication module for indicating whether the OBU is working properly. Specifically, the circuit structure of the system status indication module includes...

[0051] Transistor Q1 has its collector connected to one end of resistor R10, the other end of resistor R10 connected to the output of diode D1, and the input of diode D1 connected to the power supply input of the 4G communication module. The base of transistor Q1 is connected to one end of resistors R22 and R24, the other end of resistor R22 is connected to another GPIO port of the MCU, and the other end of resistor R24 ​​is connected to the emitter of transistor Q1 and ground.

[0052] In this preferred embodiment, considering the visualization issue, the system status indicator module is constructed with the above circuit structure, which can intuitively show whether the OBU system is powered on normally by observing the lighting status of the light-emitting diode D1.

[0053] Reference Figure 5 As a preferred embodiment of this utility model, specifically, the circuit structure of the GNSS module reset unit includes,

[0054] The collector of transistor Q14 is connected to the GNSS_RST pin of the TAU1113 chip and one end of capacitor C33. The other end of capacitor C33 is connected to the emitter of transistor Q14 / one end of resistor R53 and ground. The base of transistor Q14 is connected to the other end of resistor R53 and one end of resistor R42. The other end of resistor R42 is connected to the RESET_N pin of the MCU.

[0055] In this preferred embodiment, the circuit design described above can provide a stable reset function for the GNSS module with a relatively simple circuit design, making it convenient for users.

[0056] Reference Figure 6 As a preferred embodiment of this utility model, specifically, the circuit structure of the 4G communication module reset unit includes,

[0057] The collector of transistor Q17 is connected to the 4G_RESET pin of the MCU and one end of capacitor C74. The other end of capacitor C74 is connected to the emitter of transistor Q17, one end of resistor R90, and ground. The base of transistor Q17 is connected to the other end of resistor R90 and one end of resistor R89. The other end of resistor R89 ​​is connected to the MCU_4G_RST pin of the MCU.

[0058] In this preferred embodiment, the circuit design described above can provide a stable reset function for the 4G communication module with a relatively simple circuit design, making it convenient for users.

[0059] In a preferred embodiment of this utility model, the 4G communication module is provided with a NANO_SIM card slot, which is used to hold a Nano_SIM card, and the 4G communication function is realized based on the Nano_SIM card and its peripheral circuit.

[0060] Although the description of this utility model has been quite detailed and particularly of several described embodiments, it is not intended to limit it to any of these details or embodiments or any particular embodiment, but should be considered as providing a broad possible interpretation of the claims by referring to the appended claims and taking into account the prior art, thereby effectively covering the intended scope of this utility model. Furthermore, the utility model has been described above with respect to embodiments foreseeable by the inventors for the purpose of providing a useful description, and non-substantial modifications to the utility model that have not yet been foreseen may still represent equivalent modifications to the utility model.

[0061] The above description is merely a preferred embodiment of this utility model. This utility model is not limited to the above-described embodiments; any embodiment that achieves the technical effect of this utility model using the same means should fall within the protection scope of this utility model. Within the protection scope of this utility model, various modifications and variations of the technical solution and / or implementation method are possible.

Claims

1. A multi-functional OBU based on BeiDou and 4G communication, including a traditional dual-chip OBU, which is used for card deduction to support ETC transactions, characterized in that... The dual-chip OBU also includes: The GNSS module is electrically connected to the MCU of the dual-chip OBU and is used to provide geographical location information to the OBU; The GNSS module is also equipped with a GNSS module reset unit, which is used to reset the GNSS module when triggered; An accelerometer sensor, electrically connected to the MCU, is used to provide acceleration-related data to the OBU; The 4G communication module is electrically connected to the MCU and is used to provide networking functionality for the OBU. The 4G communication module is also equipped with a 4G communication module reset unit and a network status indicator unit. The 4G communication module reset unit is used to reset the 4G communication module when triggered, and the network status indicator unit is used to indicate the operating status of the 4G communication module. The WIFI module is electrically connected to the MCU and is used to provide WIFI functionality to the OBU based on the 4G communication module.

2. The multi-functional OBU based on BeiDou and 4G communication according to claim 1, characterized in that, Specifically, the GNSS module is built based on the TAU1113 chip and its peripheral circuits.

3. The multi-functional OBU based on BeiDou and 4G communication according to claim 2, characterized in that, Specifically, the circuit structure of the network status indication unit includes, Transistor Q6 has its collector connected to one end of resistor R17, the other end of resistor R17 connected to the output of diode D7, and the input of diode D7 connected to the power supply input of the 4G communication module. The base of transistor Q6 is connected to one end of resistors R23 and R25, the other end of resistor R23 is connected to a GPIO port of the MCU, and the other end of resistor R25 is connected to the emitter of transistor Q6 and ground.

4. The multi-functional OBU based on BeiDou and 4G communication according to claim 1, characterized in that, Specifically, the accelerometer is constructed based on the ADXL343 or ADXL343-EP and its peripheral circuitry.

5. The multi-functional OBU based on BeiDou and 4G communication according to claim 1, characterized in that, The OBU also includes a system status indication module, used to indicate whether the OBU is working properly. Specifically, the circuit structure of the system status indication module includes... Transistor Q1 has its collector connected to one end of resistor R10, the other end of resistor R10 connected to the output of diode D1, and the input of diode D1 connected to the power supply input of the 4G communication module. The base of transistor Q1 is connected to one end of resistors R22 and R24, the other end of resistor R22 is connected to another GPIO port of the MCU, and the other end of resistor R24 ​​is connected to the emitter of transistor Q1 and ground.

6. The multi-functional OBU based on BeiDou and 4G communication according to claim 2, characterized in that, Specifically, the circuit structure of the GNSS module reset unit includes, The collector of transistor Q14 is connected to the GNSS_RST pin of the TAU1113 chip and one end of capacitor C33. The other end of capacitor C33 is connected to the emitter of transistor Q14 / one end of resistor R53 and ground. The base of transistor Q14 is connected to the other end of resistor R53 and one end of resistor R42. The other end of resistor R42 is connected to the RESET_N pin of the MCU.

7. The multi-functional OBU based on BeiDou and 4G communication according to claim 4, characterized in that, Specifically, the circuit structure of the 4G communication module reset unit includes, The collector of transistor Q17 is connected to the 4G_RESET pin of the MCU and one end of capacitor C74. The other end of capacitor C74 is connected to the emitter of transistor Q17, one end of resistor R90, and ground. The base of transistor Q17 is connected to the other end of resistor R90 and one end of resistor R89. The other end of resistor R89 ​​is connected to the MCU_4G_RST pin of the MCU.

8. The multi-functional OBU based on BeiDou and 4G communication according to claim 1, characterized in that, Specifically, the 4G communication module is equipped with a NANO_SIM card slot, which is used to hold a Nano_SIM card, and the 4G communication function is realized based on the Nano_SIM card and its peripheral circuits.

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