OBU false wake-up detection method and device

Abstract

The invention discloses an OBU false wake-up detection method and device, and the method comprises the following steps: S1, providing an OBU device which comprises an MCU control module, a human body existence sensor module, a wireless communication module and a security encryption module; s2, the OBU is activated through an issuing process to start a human body existence sensor module to control a wireless signal awakening function of the OBU; S3, after activation, the OBU starts the human body existence sensor module to scan the interior of the vehicle; s4, a human body existence sensor module detects whether a person is in the vehicle or not, and when the state of the person in the vehicle changes, the human body existence sensor module wakes up the OBU; s5, if it is detected that no person is in the vehicle, the OBU closes the wireless signal awakening function and enters a low-power-consumption sleep mode; if it is detected that someone is in the vehicle, the OBU keeps a wireless signal awakening function starting state, and a timer awakening function is closed. According to the invention, battery power consumption caused by false wake-up is effectively avoided, and the possibility of illegal information acquisition and malicious fee deduction is effectively blocked.

Description

Technical Field

[0001] The present invention relates to the field of vehicle networking security technology, and in particular to an OBU false wake-up detection method and device. Background Art

[0002] With the rapid development of intelligent transportation systems, automatic electronic toll collection (ETC) (full name of Electronic Toll Collection), also known as non-stop toll collection, OBU (On board Unit) as a key device in the electronic non-stop toll collection (ETC) system, plays an increasingly important role. OBU uses DSRC (Dedicated Short Range Communication) technology to communicate with RSU (Road Side Unit) for microwave communication, allowing vehicles to exchange effective data with RSU during high-speed driving, thereby realizing non-stop toll collection, vehicle identity recognition and other functions, greatly improving traffic efficiency.

[0003] However, the existing OBU technology has exposed some problems during the application process, including the problem of false awakening. False awakening signals, that is, unexpected awakening signals, may come from interference from external wireless signals. These interference signals may come from other wireless communication devices, electromagnetic radiation sources, etc., which will inadvertently trigger the awakening mechanism of OBU, causing OBU to frequently perform awakening and shutdown operations. This frequent awakening and shutdown not only increases the energy consumption of OBU and shortens the service life of the battery, but may also affect the stability and reliability of the ETC system and reduce the user's travel efficiency. In addition to the problem of false awakening, the existing OBU technology also has security risks. Since OBU needs to establish a communication link with a handheld terminal device to complete operations such as activation and deduction of transaction fees, and the handheld terminal device authenticates the identity with OBU through a built-in PSAM (Pin Secure Access Module) card. However, if someone uses illegal means to obtain or modify the handheld terminal device and establishes a communication link with the OBU with the help of a forged PSAM card, once the communication link is established, the vehicle identification information and personal privacy data can be illegally obtained, and even unauthorized fee deduction operations can be performed, i.e., fraudulent card swiping, which will cause economic losses and privacy leakage risks to the car owner. Therefore, it is necessary to design a new OBU false wake-up detection method and device to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide an OBU false wake-up detection method and device to solve at least one technical problem existing in the above-mentioned prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An OBU false wake-up detection method comprises the following steps:

[0007] S1: Provide an OBU device, including an MCU control module, a human presence sensor module, a wireless communication module and a security encryption module; the OBU device is mounted on the vehicle glass as a whole, and the MCU control module is connected to the human presence sensor module, the wireless communication module and the security encryption module respectively;

[0008] S2: The OBU is activated through the issuance process to start the wireless signal wake-up function of the human body sensor module to control the OBU;

[0009] S3: After activation, the OBU starts the human presence sensor module to scan the interior of the vehicle;

[0010] S4: The human presence sensor module detects whether there is someone inside the vehicle. When the status of the person inside the vehicle changes, that is, the person state changes to the unmanned state or the unmanned state changes to the person state, the human presence sensor module wakes up the OBU;

[0011] S5: If it is detected that there is no one in the vehicle, the OBU turns off the wireless signal wake-up function and enters a low-power sleep mode; if it is detected that there is someone in the vehicle, the OBU keeps the wireless signal wake-up function turned on and turns off the timer wake-up function.

[0012] Preferably, in S5, the timer wake-up function is set to wake up within the OBU for 5 minutes. If there is still no one in the vehicle after 5 minutes of detecting that there is no one in the vehicle, it is considered that the vehicle is not in use, and the OBU automatically wakes up and turns off the wireless signal wake-up function.

[0013] Preferably, in S5, in the low-power sleep mode, the OBU checks whether it is awakened by a human body sensor or a timer timeout. If awakened, it re-enters the working state; if not awakened, it continues to remain in the low-power sleep mode.

[0014] An OBU device comprises: an MCU control module, a human presence sensor module, a wireless communication module and a security encryption module;

[0015] Wherein, the MCU control module is connected to the human presence sensor module, the wireless communication module and the security encryption module respectively;

[0016] The human presence sensor module is used to detect the presence status of a person inside the vehicle;

[0017] The MCU control module is used to control the opening and closing of the wireless signal wake-up function of the vehicle-mounted unit control device according to the detection result of the human presence sensor module;

[0018] The wireless communication module is used to realize wireless communication between the vehicle-mounted unit control device and the external device;

[0019] The security encryption module is used to perform security authentication and authorization on the access of external devices.

[0020] Preferably, the vehicle-mounted unit control device is connected to the human presence sensor module via an external pin header on a PCB board, and information interaction is achieved via a serial port to obtain changes in the status of people in the vehicle.

[0021] Preferably, when the human presence sensor module detects a change in the state of a person in the vehicle, the IO pin on the human presence sensor module undergoes a level jump, and is connected to the MCU control module of the vehicle-mounted unit control device through an external pin header, and the wireless signal wake-up function of the vehicle-mounted unit control device is turned on to enter a working state;

[0022] The human presence sensor module includes a human infrared sensor, a millimeter wave radar sensor or other sensors for detecting whether a human body is present.

[0023] Preferably, the MCU control module has a timed wake-up function, which is used to start the timing function after detecting that there is no one in the vehicle. If there is still no one in the vehicle within a preset time period, the wireless signal wake-up function of the on-board unit control device is turned off.

[0024] Preferably, the wireless communication module includes a Bluetooth chip and a 5.8 GHz radio frequency chip.

[0025] Preferably, it also includes a user interaction module, a power management module and a card reading module;

[0026] The user interaction module is used to provide a user interaction interface;

[0027] The power management module is used to provide power to the device and manage charging and discharging;

[0028] The card reader module is used to read the vehicle or user information.

[0029] Preferably, the user interaction module includes buttons, a buzzer, a liquid crystal display, and an LED light.

[0030] Compared with the prior art, the OBU false wake-up detection method and device provided by the present invention have the following beneficial effects:

[0031] 1. The present invention integrates a human presence sensor module to detect the status of people inside the vehicle, automatically adjusts the OBU wireless wake-up function, prevents the OBU from being awakened by a wireless signal when no one is in the vehicle, effectively reduces the OBU false awakening rate, thereby effectively avoiding battery power consumption caused by false awakening and reducing unnecessary energy consumption. At the same time, when no one is in the vehicle, the OBU cannot communicate wirelessly, effectively blocking the possibility of illegal information acquisition and malicious deductions, effectively protecting user privacy and financial security, and achieving the purpose of improving security.

[0032] 2. The security encryption module in the present invention is an ESAM encryption chip, which is used to perform security authentication and authorization on the access of external devices to ensure the security of the vehicle-mounted unit control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a flow chart of the OBU false awakening detection method and device of the OBU false awakening detection method of the present invention;

[0034] Figure 2 It is a module structure diagram of the OBU false wake-up detection method and device of the present invention;

[0035] Figure 3 A logic diagram of waking up the OBU by the OBU human presence sensor module of the OBU false wake-up detection method and device of the present invention;

[0036] Figure 4 The present invention discloses an application flow chart of an OBU human presence sensor module of the OBU false wake-up detection method and device.

[0037] Figure 5 The overall structural diagram of the OBU false wake-up detection method and device of the present invention;

[0038] Figure 6 A side view of the OBU false wake-up detection method and device of the present invention;

[0039] Figure 7 It is a rear view of the OBU false wake-up detection method and device of the present invention. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] like Figure 1-7 As shown, this embodiment provides an OBU false wake-up detection method, comprising the following steps:

[0043] S1: Provide an OBU device, including an MCU control module, a human presence sensor module, a wireless communication module and a security encryption module; the OBU device is mounted on the vehicle glass as a whole, and the MCU control module is connected to the human presence sensor module, the wireless communication module and the security encryption module respectively;

[0044] S2: The OBU is activated through the issuance process to start the wireless signal wake-up function of the human presence sensor module to control the OBU;

[0045] S3: After activation, the OBU starts the human presence sensor module to scan the interior of the vehicle;

[0046] S4: The human presence sensor module detects whether there is someone inside the vehicle. When the status of the person inside the vehicle changes, that is, the person state changes to the unmanned state or the unmanned state changes to the person state, the human presence sensor module wakes up the OBU;

[0047] S5: If it is detected that there is no one in the vehicle, the OBU turns off the wireless signal wake-up function and enters a low-power sleep mode; if it is detected that there is someone in the vehicle, the OBU keeps the wireless signal wake-up function turned on and turns off the timer wake-up function.

[0048] In this embodiment, by integrating a human presence sensor module, the status of people inside the vehicle is detected, and the OBU wireless wake-up function is automatically adjusted to prevent the OBU from being awakened by a wireless signal when there is no one in the vehicle, thereby effectively reducing the OBU false awakening rate, thereby effectively avoiding battery power consumption caused by false awakening and reducing unnecessary energy consumption. At the same time, when there is no one in the vehicle, the OBU cannot communicate wirelessly, effectively blocking the possibility of illegal information acquisition and malicious deductions, effectively protecting user privacy and financial security, and achieving the purpose of improving security.

[0049] In a specific embodiment, Figure 4As shown, in S5, the timer wake-up function is set to wake up within the OBU for 5 minutes. If there is still no one in the vehicle after 5 minutes of detecting that there is no one in the vehicle, it is considered that the vehicle is not in use, and the OBU automatically wakes up and turns off the wireless signal wake-up function.

[0050] In a specific embodiment, Figure 1 , Figure 4 As shown, in S5, in the low-power sleep mode, the OBU checks whether it is awakened by the human body sensor or awakened by the timer timeout. If awakened, it re-enters the working state; if not awakened, it continues to remain in the low-power sleep mode.

[0051] When the wireless wake-up function of the OBU is turned off, even if the handheld terminal device is obtained or tampered with by illegal means, and attempted with the help of a forged PSAM card, the on-board unit control device cannot be awakened, preventing the on-board unit control device from establishing a communication connection with external devices. This mechanism effectively prevents the leakage of personal user information, prevents fraudulent use, and ensures the security of financial transactions.

[0052] like Figure 2 , Figure 5 , Figure 6 , Figure 7 As shown, an OBU device includes: an MCU control module, a human presence sensor module, a wireless communication module and a security encryption module;

[0053] Wherein, the MCU control module is connected to the human presence sensor module, the wireless communication module and the security encryption module respectively;

[0054] The human presence sensor module is used to detect the presence status of a person inside the vehicle;

[0055] The MCU control module is used to control the opening and closing of the wireless signal wake-up function of the vehicle-mounted unit control device according to the detection result of the human presence sensor module;

[0056] The wireless communication module is used to realize wireless communication between the vehicle-mounted unit control device and the external device;

[0057] The security encryption module is used to perform security authentication and authorization on the access of external devices.

[0058] In this embodiment, the security encryption module is an ESAM encryption chip, which is used to perform security authentication and authorization on the access of external devices to ensure the security of the vehicle-mounted unit control device. The MCU control module controls the wireless communication module, card reading module, user interaction module, security encryption module, etc. through SPI, UART, IO and other methods to realize the basic functions of the vehicle-mounted unit control device.

[0059] In a specific embodiment, the vehicle-mounted unit control device is connected to the human presence sensor module via an external pin header on a PCB board, and information interaction is achieved through a serial port to obtain changes in the status of people in the vehicle.

[0060] In a specific embodiment, when the human presence sensor module detects a change in the state of a person in the vehicle, the IO pin on the human presence sensor module undergoes a level jump, and is connected to the MCU control module of the vehicle-mounted unit control device through an external pin header, and the wireless signal wake-up function of the vehicle-mounted unit control device is turned on to enter a working state;

[0061] The human presence sensor module includes a human infrared sensor, a millimeter wave radar sensor or other sensors for detecting whether a human body is present.

[0062] In a specific embodiment, the MCU control module has a timed wake-up function, which is used to start the timing function after detecting that there is no one in the vehicle. If there is still no one in the vehicle within a preset time period, the wireless signal wake-up function of the on-board unit control device is turned off.

[0063] In a specific embodiment, the wireless communication module includes a Bluetooth chip and a 5.8 GHz radio frequency chip.

[0064] In this embodiment, the communication function of the Bluetooth chip is not affected by the detection result of the human presence sensor module. The 5.8 GHz radio frequency chip refers to a radio frequency chip used to work in the 5.8 GHz frequency band.

[0065] In a specific embodiment, Figure 2 As shown, it also includes a user interaction module, a power management module and a card reading module;

[0066] The user interaction module is used to provide a user interaction interface; wherein the user interaction module includes buttons, a buzzer, a liquid crystal display screen, and an LED light.

[0067] The power management module is used to provide power to the device and manage charging and discharging;

[0068] The card reader module is used to read the vehicle or user information.

[0069] The working principle or working process of the present invention is: the adaptive control of the wireless signal wake-up function is realized by the human presence sensor. In order to ensure that the original issuance and activation process is not affected, it is set that when the OBU is in the unissued activation state, its wireless signal wake-up function remains in the open state. Once the OBU successfully completes the issuance and activation, the human presence sensor module will be started. Before the OBU enters the dormant state, the current personnel presence state of the vehicle will be recorded. If the OBU detects that there is no one in the vehicle before dormancy, a 5-minute timed wake-up function will be set. During this period, the wireless signal wake-up function of the OBU remains open, but the condition for the human presence sensor module to wake up the MCU module will be changed to someone in the vehicle. Subsequently, the OBU enters the dormant state. When the OBU is awakened by the timer, if it is detected that the vehicle is always in an unmanned state within these 5 minutes, the OBU will turn off its wireless signal wake-up function. This means that in the unmanned state, the OBU will reduce unnecessary energy consumption. However, if the human presence sensor module detects that there is someone in the vehicle at a certain time in the future, the OBU will immediately reopen the wireless signal wake-up function and turn off the timer wake-up function. In this way, when there is someone in the vehicle, the OBU can respond quickly and restore its wireless signal wake-up capability. Through the above technical solutions, it is possible to achieve more intelligent and energy-saving wireless signal wake-up control while ensuring the normal operation of the OBU.

[0070] In summary, the present invention realizes the intelligent control of the OBU wireless signal wake-up function, effectively avoids the problem of false wake-up, reduces energy consumption and prolongs battery life, and at the same time enhances the security protection capability of the OBU, prevents the illegal acquisition of vehicle identification information and personal privacy data when the vehicle is unmanned, and avoids the occurrence of security incidents such as theft of unauthorized fee deduction operations.

[0071] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An OBU false wake-up detection method, characterized in that: The following steps are involved: S1: Provide an OBU device, including an MCU control module, a human presence sensor module, a wireless communication module and a security encryption module; The OBU device is mounted on the vehicle glass as a whole, and the MCU control module is connected to the human presence sensor module, the wireless communication module and the security encryption module respectively; S2: The OBU is activated through the issuance process to start the wireless signal wake-up function of the human presence sensor module to control the OBU; S3: After activation, the OBU starts the human presence sensor module to scan the interior of the vehicle; S4: The human presence sensor module detects whether there is someone inside the vehicle. When the status of the person inside the vehicle changes, that is, the person state changes to the unmanned state or the unmanned state changes to the person state, the human presence sensor module wakes up the OBU; S5: If it is detected that there is no one in the vehicle, the OBU turns off the wireless signal wake-up function and enters a low-power sleep mode; if it is detected that there is someone in the vehicle, the OBU keeps the wireless signal wake-up function turned on and turns off the timer wake-up function.

2. A method for detecting an OBU false wake-up according to claim 1, characterized in that: In S5, the timer wake-up function is set to wake up at a fixed time of 5 minutes inside the OBU. If there is still no one in the vehicle after 5 minutes of detecting that there is no one in the vehicle, it is considered that the vehicle is not in use, and the OBU automatically wakes up and turns off the wireless signal wake-up function.

3. A method for detecting an OBU false wake-up according to claim 1, characterized in that: In S5, in the low-power sleep mode, the OBU checks whether it is awakened by the human presence sensor module or awakened by the timer timeout. If awakened, it re-enters the working state; if not awakened, it continues to remain in the low-power sleep mode.

4. An OBU device, characterized in that: include: MCU control module, human presence sensor module, wireless communication module and security encryption module; Wherein, the MCU control module is connected to the human presence sensor module, the wireless communication module and the security encryption module respectively; The human presence sensor module is used to detect the presence status of a person inside the vehicle; The MCU control module is used to control the opening and closing of the wireless signal wake-up function of the vehicle-mounted unit control device according to the detection result of the human presence sensor module; The wireless communication module is used to realize wireless communication between the vehicle-mounted unit control device and the external device; The security encryption module is used to perform security authentication and authorization on the access of external devices.

5. An OBU device according to claim 4, characterized in that: The vehicle-mounted unit control device is connected to the human presence sensor module via an external pin header on a PCB board, and information interaction is achieved via a serial port to obtain changes in the status of people in the vehicle.

6. An OBU device according to claim 4, characterized in that: When the human presence sensor module detects a change in the state of a person in the vehicle, the IO pin on the human presence sensor module undergoes a level jump and is connected to the MCU control module of the vehicle-mounted unit control device through an external pin header, and the wireless signal wake-up function of the vehicle-mounted unit control device is turned on to enter a working state; The human presence sensor module includes a human infrared sensor, a millimeter wave radar sensor or other sensors for detecting whether a human body is present.

7. An OBU device according to claim 4, characterized in that: The MCU control module has a timed wake-up function, which is used to start the timing function after detecting that there is no one in the vehicle. If there is still no one in the vehicle within a preset time period, the wireless signal wake-up function of the on-board unit control device is turned off.

8. An OBU device according to claim 4, characterized in that: The wireless communication module includes a Bluetooth chip and a 5.8 GHz radio frequency chip.

9. An OBU device according to claim 4, characterized in that: It also includes a user interaction module, a power management module and a card reading module; The user interaction module is used to provide a user interaction interface; The power management module is used to provide power to the device and manage charging and discharging; The card reader module is used to read the vehicle or user information.

10. An OBU device according to claim 9, characterized in that: The user interaction module includes buttons, a buzzer, a liquid crystal display screen, and an LED light.

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