OBD hardware system for truck and control method

Abstract

The invention discloses an OBD hardware system for a truck. The OBD hardware system comprises a power management module, an MCU controller, an RTC module, an input voltage detection module, a Bluetooth module, a posture sensing module and a vehicle-mounted communication module. The power supply management module is used for converting the vehicle-mounted battery voltage into system adaptive voltage and outputting constant power V1 and controlled voltage V2; the MCU controller is electrically connected with the RTC module, the input voltage detection module, the Bluetooth module, the posture sensing module and the vehicle-mounted communication module and used for working mode configuration; the RTC module is used for regularly awakening and triggering an awakening signal S3 to awaken the OBD hardware system; the input voltage detection module is used for monitoring external power supply voltage fluctuation and generating a wake-up signal S2; the Bluetooth module supports user side connection and generates a wake-up signal S1; the posture sensing module is used for detecting the posture change of the vehicle and generating a wake-up signal S6; and the vehicle-mounted communication module interacts with a vehicle-mounted system to obtain driving data. The system has the advantages of being low in power consumption and improving the safety of the vehicle.

Description

Technical Field

[0001] The present invention relates to an OBD hardware system for trucks, and in particular to an OBD hardware system for trucks and a control method thereof. Background Art

[0002] The existing OBD equipment hardware for trucks is basically composed of MCU, communication module, Bluetooth, etc. The communication module interacts with the on-board system to obtain driving data, and the Bluetooth module connects to the user's mobile phone APP to display key data information such as the engine.

[0003] However, the OBD device is powered by the truck's battery pack. If the OBD device is plugged into the truck for a long time, it will inevitably cause significant battery loss. Even if the existing OBD device enters sleep mode through the design of the MCU, the power consumption of a single MCU is basically 2 to 4 mA, which will eventually lead to battery depletion and affect the normal use of the vehicle. Summary of the Invention

[0004] The purpose of the present invention is to provide an OBD hardware system and control method for trucks, which have the advantages of low power consumption and improved vehicle safety.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] An OBD hardware system for trucks, including a power management module, an MCU controller, an RTC module, an input voltage detection module, a Bluetooth module, a posture sensing module, and an on-board communication module;

[0007] The power management module is used to convert the vehicle battery voltage into a system-adaptable voltage and output a normal voltage V1 and a controlled voltage V2;

[0008] The MCU controller is electrically connected to the RTC module, input voltage detection module, Bluetooth module, attitude sensing module, and vehicle communication module for working mode configuration and data information exchange;

[0009] The RTC module is used for timed wake-up and triggers the wake-up signal S3 to wake up the OBD hardware system;

[0010] Input voltage detection module, used to monitor external power supply voltage fluctuations and generate a wake-up signal S2;

[0011] Bluetooth module, supporting user-side connection and generating wake-up signal S1;

[0012] The posture sensing module detects changes in the vehicle posture and generates a wake-up signal S6;

[0013] On-board communication module, interacting with the on-board system to obtain driving data;

[0014] The power management module includes a Mux module, which is triggered by a DEL module and multiple "OR" structures. The DEL module is used to maintain the controlled voltage V2 output for 1 second when the system is first powered on, so that the MCU controller can switch to the S5 signal lock power to maintain the controlled voltage V2 output after completing initialization; when the system is dormant, the controlled voltage V2 is turned off, and only the normal power V1 is output to power the RTC module, Bluetooth module and gesture sensing module, and the system standby current is reduced to below 200μA;

[0015] The trigger source of the Mux module is electrically connected to the RTC module, input voltage detection module, Bluetooth module, attitude sensing module, and vehicle communication module respectively.

[0016] The preferred options are as follows:

[0017] Preferably, the DEL module automatically disables after outputting the controlled voltage V2 for 1 second during the initial power-on phase. During this 1 second, the MCU controller completes GPIO initialization and generates a high-level signal S5 to control the power management module to maintain the output of the controlled voltage V2.

[0018] Preferably: the Bluetooth module includes Bluetooth hardware and a mobile app.

[0019] The Bluetooth hardware exchanges data with the MCU controller through COM4 and uploads the updated vehicle information to the mobile app;

[0020] The mobile app supports configuring the sensitivity and working mode of the attitude sensing module, filtering driving data and issuing early warnings for key information, and connecting with the vehicle's BMS system to obtain battery charge and discharge current information.

[0021] A control method for an OBD hardware system for a truck includes an initial power-on phase, a normal operation phase, a sleep phase, and a wake-up phase;

[0022] During the initial power-on phase, when the OBD device is plugged into the vehicle's OBD socket and powered on, the DEL module in the power management module maintains the output of the controlled voltage V2 for 1 second and then automatically disables. During this 1 second, the MCU controller completes GPIO initialization and generates a high-level signal S5 to control the power management module to maintain the output of the controlled voltage V2.

[0023] During the normal working phase, the MCU controller enters the normal working state and completes the working mode configuration of the RTC module, Bluetooth module, attitude sensing module, and vehicle communication module. The user terminal sets the required parameters via Bluetooth. The OBD device continuously connects with the vehicle system through the vehicle communication interface module to obtain the latest driving status data and uploads it to the client via Bluetooth.

[0024] During the system sleep phase, in the normal working phase, if the MCU controller detects that there is no user data request from the Bluetooth end, it will be considered that the OBD device needs to enter the system sleep phase; the MCU controller actively configures the RTC module, attitude sensing module, Bluetooth module and vehicle communication module to enter low power consumption mode. After the configuration is completed, the S5 signal of the MCU controller is pulled low, the controlled voltage V2 output is turned off, and only the normal power V1 is output to power the RTC module, Bluetooth module and attitude sensing module. The system standby current is reduced to below 200μA, and the entire OBD hardware system enters the sleep phase with extremely low power consumption;

[0025] During the system wake-up phase, the OBD device enters the system sleep phase, the MCU controller has no power supply, and the RTC module, Bluetooth module and attitude sensing module are powered by the output constant power V1. Vehicle attitude changes, user Bluetooth applet connection to the OBD device, and RTC timed wake-up generate signal sources S6, S1, and S3, which will generate wake-up signals, and the wake-up power management module outputs a controlled voltage V2 signal; when the controlled voltage V2 is effectively output, the MCU controller is powered and operates normally and configures the Bluetooth module, attitude sensing module, vehicle communication module and RTC to enter normal working mode.

[0026] In summary, the present invention realizes the low-power consumption function of the OBD device and provides conditions for the long-term connection of the OBD device to the vehicle system; through the configuration of the RTC module, the Bluetooth module, and the attitude sensing module, the low-power design is taken into account while also taking into account safety performance; the present invention has good application flexibility and improves the safety performance of the vehicle while ensuring that users obtain effective driving data. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the framework of the embodiment;

[0028] Figure 2 FIG. 4 is a circuit diagram of a power management module according to an embodiment.

[0029] In the figure, 1. Power management module; 2. MCU controller; 3. RTC module; 4. Input voltage detection module; 5. Bluetooth module; 6. Gesture sensing module; 7. In-vehicle communication module; 8. Mux module; 9. DEL module. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] An OBD hardware system for trucks includes a power management module 1, an MCU controller 2, an RTC module 3, an input voltage detection module 4, a Bluetooth module 5, a posture sensing module 6, and an on-board communication module 7;

[0032] The power management module 1 is electrically connected to the MCU controller 2, and the MCU controller 2 is electrically connected to the RTC module 3, the input voltage detection module 4, the Bluetooth module 5, the posture sensing module 6, and the vehicle communication module 7 respectively. The power management module 1 is also electrically connected to the RTC module 3, the Bluetooth module 5, and the posture sensing module 6 respectively.

[0033] Power management module 1, used to convert the vehicle battery voltage into a system-adaptable voltage and output a normal voltage V1 and a controlled voltage V2;

[0034] The MCU controller 2 is electrically connected to the RTC module 3, the input voltage detection module 4, the Bluetooth module 5, the posture sensing module 6, and the vehicle communication module 7 for operating mode configuration and data information exchange;

[0035] RTC module 3 is used for timed wake-up and triggers the wake-up signal S3 to wake up the OBD hardware system;

[0036] Input voltage detection module 4, used to monitor external power supply voltage fluctuations and generate a wake-up signal S2;

[0037] Bluetooth module 5, supports user terminal connection and generates wake-up signal S1;

[0038] The posture sensing module 6 detects changes in the vehicle posture and generates a wake-up signal S6;

[0039] The vehicle communication module 7 interacts with the vehicle system to obtain driving data.

[0040] The power management module 1 includes a Mux module 8, which is triggered by a DEL module 9 and multiple "OR" structure sources. The DEL module 9 is used to maintain the controlled voltage V2 output for 1 second when the system is first powered on, so that the MCU controller 2 can switch to the S5 signal to lock the power and maintain the controlled voltage V2 output after completing initialization; when the system is dormant, the controlled voltage V2 is turned off, and only the normal power V1 is output to power the RTC module 3, the Bluetooth module 5 and the posture sensing module 6, and the system standby current is reduced to below 200μA. Among them, the DEL module 9 automatically disables after outputting the controlled voltage V2 for 1 second in the initial power-on stage. During this 1 second, the MCU controller 2 completes the GPIO initialization and generates a high-level signal S5 to control the power management module 1 to maintain the controlled voltage V2 output.

[0041] The trigger source of the Mux module 8 is electrically connected to the RTC module 3 , the input voltage detection module 4 , the Bluetooth module 5 , the posture sensing module 6 , and the vehicle communication module 7 , respectively.

[0042] Trigger sources include but are not limited to S1, S2, S3, DEL module 9, S5, S6.

[0043] The Bluetooth module 5 includes Bluetooth hardware and a mobile app. The Bluetooth hardware interacts with the MCU controller 2 via COM4 and uploads updated vehicle information to the mobile app.

[0044] The mobile app supports configuring the sensitivity and working mode of the attitude sensing module 6, filtering driving data and issuing early warnings for key information, and connecting with the vehicle's BMS system to obtain battery charge and discharge current information.

[0045] The specific operation of the power management module is as follows: When the BAT+ and BAT- voltages are initially applied, C7 and R16 form the C7 capacitor charging circuit, and the TP6 voltage increases. When the TP5 voltage is higher than the Q4 gate turn-on voltage, Q4's DS is turned on, and then Q5 is turned on. The normal power output of the normal power V1 flows to the controlled voltage V2, and the controlled voltage V2 is energized. The MCU works normally and the S5 signal is set to complete the power locking of the controlled voltage V2.

[0046] Specific implementation process:

[0047] A control method for an OBD hardware system for a truck includes an initial power-on phase, a normal operation phase, a sleep phase, and a wake-up phase;

[0048] During the initial power-on phase, when the OBD device is plugged into the vehicle's OBD socket and powered on, the DEL module 9 in the power management module 1 maintains the output of the controlled voltage V2 for 1 second and then automatically disables. During this 1 second, the MCU controller 2 completes GPIO initialization and generates a high-level signal S5 to control the power management module 1 to maintain the output of the controlled voltage V2.

[0049] During the normal working phase, the MCU controller 2 enters the normal working state and completes the working mode configuration of the RTC module 3, Bluetooth module 5, attitude sensing module 6, and vehicle communication module 7. The user terminal sets the required parameters via Bluetooth. The OBD device continuously connects with the vehicle system through the vehicle communication interface module to obtain the latest driving status data and uploads it to the client via Bluetooth.

[0050] During the system sleep phase, in the normal working phase, if the MCU controller 2 detects that there is no user data request from the Bluetooth end, it is considered that the OBD device needs to enter the system sleep phase; the MCU controller 2 actively configures the RTC module 3, the attitude sensing module 6, the Bluetooth module 5 and the vehicle communication module 7 to enter the low power consumption mode. After the configuration is completed, the S5 signal of the MCU controller 2 is pulled low, the controlled voltage V2 output is turned off, and only the normal power V1 is output to power the RTC module 3, the Bluetooth module 5 and the attitude sensing module 6. The system standby current is reduced to below 200μA, and the entire OBD hardware system enters the sleep phase with extremely low power consumption;

[0051] During the system wake-up phase, the OBD device enters the system sleep phase, the MCU controller 2 has no power supply, and the RTC module 3, Bluetooth module 5 and attitude sensing module 6 are powered by the output constant power V1. Vehicle attitude changes, user Bluetooth applet connection to the OBD device, and RTC timed wake-up generate signal sources S6, S1, and S3, which will generate wake-up signals, and wake-up the power management module 1 to output a controlled voltage V2 signal; when the controlled voltage V2 is effectively output, the MCU controller 2 is powered and operates normally and configures the Bluetooth module 5, attitude sensing module 6, vehicle communication module 7 and RTC to enter normal working mode.

[0052] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An OBD hardware system for trucks, characterized by: It includes a power management module (1), an MCU controller (2), an RTC module (3), an input voltage detection module (4), a Bluetooth module (5), a posture sensing module (6), and an in-vehicle communication module (7); A power management module (1) is used to convert the vehicle battery voltage into a system adaptation voltage and output a normal voltage V1 and a controlled voltage V2; The MCU controller (2) is electrically connected to the RTC module (3), the input voltage detection module (4), the Bluetooth module (5), the posture sensing module (6), and the vehicle communication module (7) for configuring the working mode and exchanging data information; An RTC module (3) is used for timing wake-up and triggering a wake-up signal S3 to wake up the OBD hardware system; An input voltage detection module (4) for monitoring external power supply voltage fluctuations and generating a wake-up signal S2; A Bluetooth module (5) supports user terminal connection and generates a wake-up signal S1; A posture sensing module (6) detects changes in the vehicle's posture and generates a wake-up signal S6; An onboard communication module (7) interacts with the onboard system to obtain driving data; The power management module (1) includes a Mux module (8), which is triggered by a DEL module (9) and multiple "OR" structure trigger sources. The DEL module (9) is used to maintain the output of the controlled voltage V2 for 1 second when the system is first powered on, so that the MCU controller can switch to the S5 signal lock power to maintain the output of the controlled voltage V2 after completing initialization; when the system is dormant, the controlled voltage V2 is turned off, and only the normal power V1 is output to power the RTC module (3), the Bluetooth module (5) and the attitude sensing module (6), so that the system standby current is reduced to below 200μA; The trigger source of the Mux module (8) is electrically connected to the RTC module (3), the input voltage detection module (4), the Bluetooth module (5), the posture sensing module (6), and the vehicle communication module (7).

2. The OBD hardware system for trucks according to claim 1, characterized in that: The DEL module (9) automatically disables after outputting the controlled voltage V2 for 1 second during the initial power-on phase. During this 1 second, the MCU controller (2) completes GPIO initialization and generates a high-level signal S5 to control the power management module (1) to maintain the output of the controlled voltage V2.

3. The OBD hardware system for trucks according to claim 2, characterized in that: The Bluetooth module (5) includes Bluetooth hardware and a mobile phone app. The Bluetooth hardware exchanges data with the MCU controller (2) via COM4 and uploads the updated vehicle information to the mobile app; The mobile app supports configuring the sensitivity and working mode of the attitude sensing module (6), screening driving data and issuing early warnings for key information, and connecting with the vehicle's BMS system to obtain battery charge and discharge current information.

4. A method for controlling an OBD hardware system for a truck, used in the OBD hardware system for a truck according to claim 3, characterized in that: Including the initial power-on stage, normal working stage, sleep stage and wake-up stage; In the initial power-on phase, the OBD device is plugged into the vehicle OBD socket and powered on. The DEL module (9) in the power management module (1) maintains the output of the controlled voltage V2 for 1 second and then automatically disables. During this 1 second, the MCU controller (2) completes the GPIO initialization and generates a high-level signal S5 to control the power management module (1) to maintain the output of the controlled voltage V2. During the normal working phase, the MCU controller (2) enters the normal working state and completes the working mode configuration of the RTC module (3), the Bluetooth module (5), the attitude sensing module (6), and the vehicle communication module (7); the user terminal sets the required parameters via Bluetooth; the OBD device continuously connects with the vehicle system via the vehicle communication interface module to obtain the latest driving status data and uploads it to the client via Bluetooth; During the system dormancy phase, in the normal working phase, the MCU controller (2) detects that there is no user data request from the Bluetooth end, and it is considered that the OBD device needs to enter the system dormancy phase; the MCU controller (2) actively configures the RTC module (3), the attitude sensing module (6), the Bluetooth module (5) and the vehicle communication module (7) to enter the low power consumption mode. After the configuration is completed, the S5 signal of the MCU controller (2) is pulled low, the controlled voltage V2 output is turned off, and only the normal power V1 is output to power the RTC module (3), the Bluetooth module (5) and the attitude sensing module (6). The system standby current is reduced to below 200μA, and the entire OBD hardware system enters the dormancy phase, consuming very little power. During the system awakening phase, the OBD device enters the system dormant phase, the MCU controller (2) has no power supply, the RTC module (3), the Bluetooth module (5) and the attitude sensing module (6) are powered by the output constant power V1, the vehicle attitude change, the user Bluetooth applet connecting to the OBD device, and the RTC timed awakening respectively generate signal sources S6, S1, and S3, which will generate awakening signals, and the awakening power management module (1) outputs the controlled voltage V2 signal; when the controlled voltage V2 is effectively output, the MCU controller (2) is powered and operates normally and configures the Bluetooth module (5), the attitude sensing module (6), the vehicle communication module (7) and the RTC to enter the normal working mode.

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