One-key starting system of vehicle

Abstract

The utility model provides a one-key starting system of a vehicle, which relates to the technical field of automobile safety and comprises a power management module and an MCU (Microprogrammed Control Unit). The power management module comprises a voltage converter and a low-voltage stabilizer, the voltage converter is connected with a vehicle-mounted electric power system, the output end of the voltage converter is connected with the HSD driver set and the low-voltage stabilizer, the HSD driver set drives the ignition control relay set, and the output end of the low-voltage stabilizer is connected with the MCU and the LSD driver set. The MCU communicates with the HSD and LSD driver group and is connected with the low-frequency driving module and the high-frequency receiving module, the low-frequency driving module comprises a driving trigger unit and a low-frequency antenna, and the high-frequency receiving module receives a high-frequency signal corresponding to a car key and feeds back the high-frequency signal to the MCU. According to the utility model, hierarchical power supply control is provided, power supply is stable and reliable, system complexity is reduced, and stable and efficient keyless entry and start functions are provided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile safety, in particular to a one-key starting system for a vehicle. Background Art

[0002] With the continuous development of the automobile industry, the degree of vehicle electrification is getting higher and higher, and safety and convenience have become the focus of consumers. As an advanced automotive electronic system, the keyless entry and start system (PEPS) has been widely used in mid-to-high-end models. The PEPS system allows car owners to enter and start the vehicle through wireless radio frequency technology without using a key, which greatly improves the user experience and the safety performance of the vehicle. However, with the development of industry technology, the intelligent functions of vehicles realized by electronic technology have gradually increased. Although the comfort of the vehicle has been improved, it has also brought about problems such as increased load rate of power supply and communication network, increased cost, and complex wiring. Under the traditional power management method, it not only increases the power consumption and heat management difficulty of the system, but also may cause the power module to overheat under high power demand, further affecting the stability and service life of the system. Utility Model Content

[0003] In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to propose a one-key start system for a vehicle, which adopts the following technical solutions:

[0004] A one-key start system for a vehicle comprises a power management module and an MCU, wherein the power management module comprises a voltage converter and a low voltage regulator; the input end of the voltage converter is electrically connected to a vehicle power system, and the output end is electrically connected to an HSD driver group and the low voltage regulator respectively, wherein the HSD driver group is used to drive an ignition control relay group, and the output end of the low voltage regulator is electrically connected to the MCU and the LSD driver group, wherein the MCU is in communication connection with the HSD driver group and the LSD driver group;

[0005] The MCU is electrically connected to a low-frequency driving module and a high-frequency receiving module. The low-frequency driving module includes a driving trigger unit and a low-frequency antenna. After the driving trigger unit is triggered, the low-frequency antenna sends a low-frequency signal to communicate with the car key. The high-frequency receiving module receives the high-frequency signal responded by the car key and feeds it back to the MCU. The MCU is also electrically connected to a CAN transceiver, and the CAN transceiver is connected to a CAN bus.

[0006] It also includes a start switch module, which is electrically connected to the MCU and includes a one-button start switch, an indicator light and a start switch input signal. The HSD driver group is electrically connected to the one-button start switch, the LSD driver group is electrically connected to the indicator light, and the start switch input signal is connected to the MCU.

[0007] As a further improvement, the above-mentioned drive trigger unit includes a first request switch arranged on the main driver's door handle and a second request switch arranged on the co-driver's door handle, and the above-mentioned low-frequency antenna includes a main driver's door handle antenna, a co-driver's door handle antenna, a first in-vehicle antenna, a second in-vehicle antenna, a third in-vehicle antenna and a fourth in-vehicle antenna.

[0008] As a further improvement, the above-mentioned ignition control relay group includes ACC1 relay, ACC2 relay, I GN1 A relay, I GN1 B relay and I GN2 relay. The above-mentioned ACC1 relay, ACC2 relay, I GN1 A relay, I GN1 B relay and I GN2 relay are used to switch the power mode and are respectively connected to the above-mentioned MCU to send feedback signals.

[0009] As a further improvement, it also includes a sensor module, which is electrically connected to the MCU and is used to collect and feed back vehicle information.

[0010] As a further improvement, it also includes an electronic steering column lock module, which is powered by the vehicle-mounted power system, has a communication end connected to the MCU via the CAN transceiver, and has an execution end connected to the HSD driver group.

[0011] As a further improvement, the above-mentioned low-frequency antenna also includes an I MMO antenna, which is used to send a low-frequency signal to the above-mentioned car key and receive a high-frequency signal returned by the above-mentioned car key. When the car key is out of power, the above-mentioned I MMO antenna transfers energy to the car key to support the above-mentioned car key to complete authentication.

[0012] As a further improvement, the voltage of the above-mentioned vehicle-mounted power system is 24V, the above-mentioned voltage converter is a DC / DC converter with a model of SY8301ABC, and the output voltage is 12V.

[0013] As a further improvement, the low voltage regulator is an LDO regulator of model ASM6050QD, and the output voltage is 5V.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] First, in the utility model, the vehicle power system adopts 24V voltage, and optimizes power management by using DC / DC converter and LDO regulator. The DC / DC converter effectively converts the high voltage on the vehicle into a low voltage suitable for each module of the system, ensuring the stability and efficiency of the power supply. In addition, the LDO regulator further ensures the accuracy and stability of the output voltage, which is essential for the normal operation of MCU and other sensitive electronic devices. This power supply design not only improves the reliability of the system and reduces the risk of overheating, but also extends the service life of the equipment and reduces maintenance costs.

[0016] Secondly, in the utility model, the HSD driver group and the LSD driver group provide efficient and precise control for electric drive. The HSD driver group is mainly responsible for driving high-voltage devices, such as the ignition control relay group, to ensure that the vehicle can start quickly and safely when receiving the start signal. The LSD driver group is responsible for low-voltage devices, such as the indicator lights of the system, which are uniformly controlled by the MCU, providing precise power control, optimizing the system structure, simplifying circuit design and wiring, reducing the complexity and failure rate of the system, and improving the user experience and system reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the following is a brief introduction to the drawings required for use in the implementation mode. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a connection relationship diagram of the overall structure of the utility model;

[0019] Figure 2 It is a module schematic diagram of the overall structure of the utility model;

[0020] Figure 3 This is a schematic diagram of a module for starting a switch module of the utility model;

[0021] Figure 4 This is a module schematic diagram of the ignition control relay group of the utility model;

[0022] Figure 5 This is a schematic diagram of a low-frequency drive module of the utility model;

[0023] Figure 6 The module schematic diagram of the electronic steering column lock module of the utility model is shown in FIG.

[0024] Reference numerals:

[0025] 1-power management module; 2-CAN transceiver; 3-HSD driver group; 4-LSD driver group; 5-low frequency drive module; 6-high frequency receiving module; 7-ignition control relay group; 8-electronic steering column lock module; 9-start switch module;

[0026] 11- voltage converter; 12- low voltage regulator. DETAILED DESCRIPTION

[0027] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the accompanying drawings:

[0028] In the description of the present invention, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. The orientation or position relationship indicated by the terms "portion", "side", "end", etc. is based on the orientation or position relationship shown in the drawings and is 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 operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0029] like Figure 1 As shown, the present application provides a one-key start system for a vehicle, including a power management module 1 and an MCU. The power management module 1 includes a voltage converter 11 and a low-voltage regulator 12. The input end of the voltage converter 11 is electrically connected to the vehicle power system, and the output end is electrically connected to the HSD driver group 3 and the low-voltage regulator 12 respectively. The HSD driver group 3 is used to drive the ignition control relay group 7. The output end of the low-voltage regulator 12 is electrically connected to the MCU and the LSD driver group 4. The MCU is connected to the HSD driver group 3 and the LSD driver group 4 in communication.

[0030] Specifically, the power management module 1 first receives power from the vehicle power system. In this example, the output voltage of the vehicle power system is 24V. The function of the voltage converter 11 is to convert the high voltage of the vehicle power system into a voltage level suitable for use by other subsystems, and output the converted voltage to the HSD driver group 3 and the low-voltage regulator 12. The HSD driver group 3 is responsible for driving the ignition control relay group 7 to start the vehicle's engine. The low-voltage regulator 12 is responsible for further adjusting the output voltage of the voltage converter 11 to meet the voltage requirements of the MCU and LSD driver group 4. As the control core of the system, the MCU communicates with the HSD and LSD driver group 4 and ensures stable and safe operation of the system. The LSD driver group 4 controls the auxiliary functions of the vehicle, such as interior lighting and vehicle information systems. Through the above structure, the one-button start system not only simplifies the vehicle startup process and enhances the convenience of use, but also improves the overall reliability and safety of the system.

[0031] More specifically, the voltage converter 11 is a DC / DC converter of model SY8301ABC, which is used to reduce the 24V output of the vehicle power system to 12V, and the low voltage regulator 12 is an LDO regulator of model ASM6050QD, which is used to further reduce the 12V to 5V. The DC / DC converter has less heat loss during the power conversion process, and the LDO provides a more stable voltage supply for sensitive electronic equipment units (such as MCU).

[0032] Further, such as Figure 1 As shown, the MCU is also electrically connected to the low-frequency driving module 5 and the high-frequency driving module. The low-frequency driving module 5 includes a driving trigger unit and a low-frequency antenna. After the driving trigger unit is triggered, the low-frequency antenna sends a low-frequency signal to communicate with the car key. The high-frequency receiving module 6 receives the high-frequency signal responded by the car key and feeds it back to the MCU. The MCU communicates with other electronic control units of the vehicle through the CAN transceiver 2.

[0033] refer to Figure 5In a specific embodiment, the driving trigger unit includes a main driver's door request switch set at the main driver's door handle, and a co-driver's door request switch set at the co-driver's door handle, and the low-frequency antenna includes a main driver's door handle antenna, a co-driver's door handle antenna, a first in-car antenna, a second in-car antenna, a third in-car antenna, and a fourth in-car antenna, which respectively cover the main driver's door, the co-driver's door, the main driver's seat, the co-driver's seat, the rear seats, and the trunk. When the car key is within a certain range around the vehicle, the main driver's door request switch and / or the co-driver's door request switch are pressed, the vehicle receives a signal requesting unlocking, the MCU drives the low-frequency antenna to send a low-frequency signal, the car key responds to the low-frequency signal and sends a high-frequency signal, the above-mentioned high-frequency receiving module 6 receives the high-frequency signal, and the vehicle is unlocked. More specifically, in this embodiment, the low-frequency driving module 5 also includes a chip ATA5291 and its peripheral circuits, and the high-frequency receiving module 6 uses a high-frequency receiving chip with a model number of ATA5781.

[0034] Furthermore, the system also includes a start switch module 9. Figure 1 , Figure 2 and Figure 3 The start switch module 9 is electrically connected to the MCU, including a one-button start switch, an indicator light, and a start switch input signal. Among them, the LSD driver group 4 is electrically connected to the indicator light, and the start switch input signal is input to the MCU. Specifically, the one-button start switch includes two switch buttons, which correspond to the start-stop switch and the start switch respectively; the LSD driver group 4 is connected to the orange indicator light, the green indicator light, and the red indicator light respectively.

[0035] like Figure 1 and Figure 2 As shown, the MCU is electrically connected to the CAN transceiver 2, and the CAN transceiver 2 is connected to the CAN bus. Specifically, the MCU is connected to the CAN transceiver 2 through SPI, UART or other communication interfaces, and the CAN transceiver 2 is connected to the CAN bus through the CAN_H and CAN_L pins for sending and receiving differential signals, thereby realizing data communication.

[0036] like Figure 1 , Figure 2 and Figure 4 As shown, the ignition control relay group 7 includes an ACC1 relay, an ACC2 relay, an I GN1 A relay, an I GN1 B relay and an I GN2 relay. The above relays are used to switch the power mode and are respectively connected to the MCU to send feedback signals.

[0037] like Figure 2 As shown, it also includes a sensor module ( Figure 2The sensor module is electrically connected to the MCU to collect vehicle speed signals, brake signals, clutch signals, and N gear signals, and feed the data back to the MCU.

[0038] like Figure 1 , Figure 2 and Figure 6 As shown, it also includes an electronic steering column lock module 8, which is powered by the vehicle power system, has a communication end connected to the MCU via a CAN transceiver 2, and has an execution end connected to the HSD driver group 3.

[0039] Specifically, the power supply pin of the electronic steering column lock module 8 is connected to the vehicle power system to provide the working voltage; the ground pin is connected to the vehicle ground. The communication end of the electronic steering column lock module 8 includes CAN_H and CAN_L pins, which are connected to the vehicle's CAN bus through the CAN transceiver 2 to communicate with the MCU. The execution end of the electronic steering column lock module 8 is connected to the HSD driver group 3 through the ESCLMOTOR pin, and the body control module BCM (not shown in the figure) sends a specific control signal to drive the motor inside the electronic steering column lock module 8 to perform the locking and unlocking operations of the steering column. At the same time, the ENABLE pin is used to enable or disable the ESCL module, which is controlled by the body control module BCM (not shown in the figure).

[0040] like Figure 1 and Figure 5 As shown, the low-frequency antenna also includes an IMMO antenna, which is used to send a low-frequency signal to the car key and receive a high-frequency signal returned by the car key.

[0041] Specifically, when the car key is close to the vehicle, the IMMO antenna sends out a low-frequency signal to activate the anti-theft chip in the car key. The anti-theft chip in the car key responds to the low-frequency signal and sends a high-frequency signal containing a unique identification code back to the IMMO antenna. After receiving the high-frequency signal, the IMMO antenna passes the signal to the MCU. The MCU reads and verifies the identification code and compares it with the legitimate identification code stored in the system. If the identification code matches, the vehicle is allowed to start or unlock. If it does not match, the vehicle is prevented from starting or unlocking. In addition, the IMMO antenna also serves as a backup emergency start mode for unlocking. When the car key is out of power, place the car key close to the IMMO antenna, charge it through mutual induction, and support the car key to complete the authentication.

[0042] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A one-button start system for a vehicle, characterized in that: The invention comprises a power management module (1) and an MCU, wherein the power management module (1) comprises a voltage converter (11) and a low-voltage regulator (12); the input end of the voltage converter (11) is electrically connected to the vehicle-mounted power system, and the output end is electrically connected to an HSD driver group (3) and a low-voltage regulator (12) respectively; the HSD driver group (3) is used to drive an ignition control relay group (7); the output end of the low-voltage regulator (12) is electrically connected to the MCU and an LSD driver group (4); and the MCU is electrically connected to the HSD driver group (3) and the LSD driver group (4); The MCU is electrically connected to a low-frequency driving module (5) and a high-frequency receiving module (6); the low-frequency driving module (5) comprises a driving trigger unit and a low-frequency antenna; after the driving trigger unit is triggered, the low-frequency antenna sends a low-frequency signal to communicate with the car key; the high-frequency receiving module (6) receives the high-frequency signal corresponding to the car key and feeds it back to the MCU; the MCU is also electrically connected to a CAN transceiver (2); and the CAN transceiver (2) is connected to a CAN bus; The invention also comprises a start switch module (9), wherein the start switch module (9) is electrically connected to the MCU and comprises a one-button start switch, an indicator light and a start switch input signal, wherein the HSD driver group (3) is electrically connected to the one-button start switch, the LSD driver group (4) is electrically connected to the indicator light, and the start switch input signal is connected to the MCU.

2. A one-button start system for a vehicle as claimed in claim 1, characterized in that: The drive trigger unit includes a first request switch arranged on the main driver's door handle and a second request switch arranged on the co-driver's door handle, and the low-frequency antenna includes a main driver's door handle antenna, a co-driver's door handle antenna, a first in-vehicle antenna, a second in-vehicle antenna, a third in-vehicle antenna and a fourth in-vehicle antenna.

3. The one-button start system for a vehicle as claimed in claim 1, characterized in that: The ignition control relay group (7) comprises an ACC1 relay, an ACC2 relay, an IGN1A relay, an IGN1 B relay and an IGN2 relay. The ACC1 relay, the ACC2 relay, the IGN1A relay, the IGN1 B relay and the IGN2 relay are used to switch the power mode, are respectively connected to the MCU, and send feedback signals.

4. A one-button start system for a vehicle as claimed in claim 3, characterized in that: It also includes a sensor module, which is electrically connected to the MCU and is used to collect and feed back vehicle information.

5. The one-button start system for a vehicle as claimed in claim 1, characterized in that: It also includes an electronic steering column lock module (8), which is powered by the vehicle-mounted power system, has a communication end connected to the MCU via the CAN transceiver (2), and has an execution end connected to the HSD driver group (3).

6. A one-button start system for a vehicle as claimed in claim 2, characterized in that: The low-frequency antenna also includes an IMMO antenna, which is used to send a low-frequency signal to the car key and receive a high-frequency signal returned by the car key. When the car key is out of power, the IMMO antenna transfers energy to the car key to support the car key to complete authentication.

7. The one-button start system for a vehicle as claimed in claim 1, characterized in that: The voltage of the vehicle-mounted power system is 24V, the voltage converter (11) is a DC / DC converter of model SY8301ABC, and the output voltage is 12V.

8. A one-button start system for a vehicle as claimed in claim 7, characterized in that: The low voltage regulator (12) is an LDO regulator of model ASM6050QD, and the output voltage is 5V.

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