CN217689996U - Vehicle-mounted master control system and power management device thereof - Google Patents
Vehicle-mounted master control system and power management device thereof Download PDFInfo
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- CN217689996U CN217689996U CN202221004904.8U CN202221004904U CN217689996U CN 217689996 U CN217689996 U CN 217689996U CN 202221004904 U CN202221004904 U CN 202221004904U CN 217689996 U CN217689996 U CN 217689996U
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Abstract
本实用新型实施例提供一种车载主控系统及其电源管理装置，所述装置与车载主控系统的主控芯片相连，包括：电压转换模块，用于将车载电源输出的实际电压转化为预定工作电压后给主控芯片供电；状态控制模块，用于采用车载电源供电并在初始上电时进入休眠状态，在休眠状态下响应外部触发源输入的外部唤醒触发信号而转入工作状态并产生导通信号，以及在工作状态下响应主控芯片发来的休眠信号而转入休眠状态并产生断开信号；以及供电开关模块，用于响应导通信号而导通以使车载电源向电压转换模块供电，以及响应断开信号而断开以使车载电源停止向电压转换模块供电。本实施例能降低休眠状态的电流消耗，并降低设计成本。
The embodiments of the present utility model provide an on-board main control system and a power management device thereof. The device is connected to a main control chip of the on-board main control system, and includes a voltage conversion module for converting the actual voltage output by the on-board power supply into a predetermined voltage. After the working voltage, the main control chip is powered; the state control module is used to use the vehicle power supply to supply power and enter the sleep state at the initial power-on. The turn-on signal, and in the working state, in response to the dormancy signal sent by the main control chip, it switches to the dormant state and generates a disconnection signal; and the power supply switch module is used to turn on in response to the turn-on signal to convert the vehicle power supply to a voltage supplying power to the module, and disconnecting in response to the disconnect signal to cause the on-board power supply to cease supplying power to the voltage conversion module. This embodiment can reduce the current consumption in the sleep state and reduce the design cost.
Description
Technical Field
The embodiment of the utility model provides a relate to on-vehicle controlgear technical field, especially relate to an on-vehicle major control system and power management device thereof.
Background
At present, a vehicle-mounted main control system for controlling vehicle-mounted electronic equipment is usually installed on a motor vehicle, and the conventional vehicle-mounted main control system mainly comprises a main control chip and a power supply management device which adopts a vehicle-mounted power supply to supply power to the main control chip.
The existing power management device of the vehicle-mounted main control system comprises a state control module and a voltage conversion module, wherein the state control module is used for generating a conducting signal according to an external awakening trigger signal input by an external trigger source under the power supply of a vehicle-mounted power supply, generating a disconnecting signal according to a dormancy signal sent by a main control chip, and correspondingly starting and sleeping according to the conducting signal and the disconnecting signal, and the voltage conversion module correspondingly converts actual voltage output by the vehicle-mounted power supply into preset working voltage and then supplies power to the main control chip when starting.
However, since the voltage conversion module is directly connected to the vehicle-mounted power supply, when the voltage conversion module still obtains a large supply current (e.g., 100 μ a) from the vehicle-mounted power supply in the sleep state, there is still a large loss to the vehicle-mounted power supply, and therefore, a voltage conversion module with a relatively small quiescent operating current needs to be used in designing a circuit, and the cost of this type of voltage conversion module is relatively high, which increases the production cost.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a technical problem who solves lies in, provides an on-vehicle major control system's power management device, can reduce dormant state's current consumption to reduction in production cost.
The embodiment of the utility model provides a technical problem who further solves provides an on-vehicle major control system, can reduce dormant state's current consumption to reduction in production cost.
In order to solve the above technical problem, an embodiment of the present invention first provides the following technical solution: a power management device of a vehicle-mounted main control system is connected with a main control chip of the vehicle-mounted main control system, and comprises:
the voltage conversion module is connected with the main control chip and the vehicle-mounted power supply and is used for converting the actual voltage output by the vehicle-mounted power supply into a preset working voltage and then supplying power to the main control chip;
the state control module is respectively connected with the main control chip, the vehicle-mounted power supply and the external trigger source, and is used for adopting the vehicle-mounted power supply to supply power, entering a dormant state when the vehicle-mounted power supply is initially electrified, responding to an external wake-up trigger signal input by the external trigger source in the dormant state, switching to a working state and generating a conducting signal, and responding to the dormant signal sent by the main control chip in the working state, switching to the dormant state and generating a disconnecting signal; and
and the power supply switch module is connected between the voltage conversion module and the vehicle-mounted power supply in series, is connected with the state control module, and is used for responding to the conducting signal to conduct so that the vehicle-mounted power supply supplies power to the voltage conversion module and responding to the disconnecting signal to disconnect so that the vehicle-mounted power supply stops supplying power to the voltage conversion module.
Further, the apparatus further comprises:
and the voltage detection module is connected between the power supply switch module and the main control chip and used for detecting the actual voltage output by the vehicle-mounted power supply when the power supply switch module is switched on and sending the actual detection voltage value obtained by detection to the main control chip, and the main control chip judges whether the vehicle-mounted power supply is abnormal in power supply according to the actual detection voltage value.
Furthermore, the power supply switch module is an MOS tube, a triode or an electronic switch.
Further, the state control module is a CAN chip for generating a conduction signal according to a CAN signal sent by an external trigger source.
Further, the CAN chip is a low power consumption chip.
Further, the state control module is a LIN chip for generating a turn-on signal according to a LIN signal sent by an external trigger source.
Further, the LIN chip is a low-power chip.
Further, the state control module is an MCU chip for generating a conduction signal according to a level signal from an external trigger source.
Further, the MCU chip is a low power consumption chip.
On the other hand, in order to solve the above-mentioned further technical problem, the embodiment of the utility model provides a following technical scheme again: the utility model provides an on-vehicle major control system, includes the major control chip who links to each other with on-vehicle electronic equipment in order to control on-vehicle electronic equipment operating condition and does the power management device of major control chip power supply, the power management device be any above-mentioned power management device, the major control chip respectively with the state control module and the on-vehicle electronic equipment of power management device link to each other, the major control chip responds outside dormancy trigger signal control that outside trigger source sent the on-vehicle electronic equipment stop work and produce the dormancy signal gives the state control module.
After the technical scheme is adopted, the embodiment of the utility model provides an at least, following beneficial effect has: the embodiment of the utility model provides a state control module responds the outside respectively and awakens trigger signal and dormancy signal and changes over to operating condition and changes over to the dormancy state, and the while corresponds and produces turn on signal and turn off signal, responds turn on signal and turn off signal through newly-increased power supply switch module, correspondingly switches on and breaks off make the vehicle mounted power supply to voltage conversion module power supply and stop the power supply for when on-vehicle major control system gets into the dormancy state, the power supply line between voltage conversion module and the vehicle mounted power supply breaks off completely, and voltage conversion module can not consume vehicle mounted power supply's output current under the dormancy state basically, and is corresponding, also need not to adopt the voltage conversion module that quiescent operating current is littleer relatively, and circuit manufacturing cost is also lower.
Drawings
Fig. 1 is a schematic block diagram of a structure of an optional embodiment of the vehicle-mounted master control system of the present invention.
Fig. 2 is a schematic structural block diagram of another optional embodiment of the vehicle-mounted master control system of the present invention.
Fig. 3 is a schematic structural diagram of another optional embodiment of the vehicle-mounted master control system of the present invention.
Detailed Description
The present application will now be described in further detail with reference to the accompanying drawings and specific examples. It is to be understood that the following illustrative embodiments and description are only intended to illustrate the present invention, and are not intended to limit the present invention, and features in the embodiments and examples may be combined with each other in the present application without conflict.
As shown in fig. 1 and fig. 2, an optional embodiment of the present invention provides a power management device 1 for a vehicle-mounted main control system, which is connected to a main control chip 3 of the vehicle-mounted main control system, including:
the voltage conversion module 10 is connected with the main control chip 3 and the vehicle-mounted power supply 5 and is used for converting the actual voltage output by the vehicle-mounted power supply 5 into a preset working voltage and then supplying power to the main control chip 3;
a state control module 12, which is respectively connected to the main control chip 3, the vehicle-mounted power supply 5 and the external trigger source 7, and is configured to adopt the vehicle-mounted power supply 5 to supply power and enter a sleep state when initially powered on, to switch to a working state and generate a turn-on signal in response to an external wake-up trigger signal input by the external trigger source in the sleep state, and to switch to the sleep state and generate a turn-off signal in response to a sleep signal transmitted by the main control chip 3 in the working state; and
and the power supply switch module 14 is connected between the voltage conversion module 10 and the vehicle-mounted power supply 5 in series and is connected with the state control module, and is used for responding to the conducting signal to conduct so that the vehicle-mounted power supply 5 supplies power to the voltage conversion module 10, and responding to the disconnecting signal to disconnect so that the vehicle-mounted power supply 5 stops supplying power to the voltage conversion module 10.
The embodiment of the utility model provides a state control module 12 responds the outside respectively and awakens trigger signal and dormancy signal and changes over to operating condition and change over to the dormancy state, and the while corresponds and produces turn on signal and turn off signal, responds turn on signal and turn off signal through newly-increased power supply switch module 14, correspondingly switches on and breaks off make vehicle mounted power supply 5 to voltage conversion module 10 supplies power and stop the power supply for when on-vehicle major control system gets into the dormancy state, the power supply line between voltage conversion module 10 and the vehicle mounted power supply 5 breaks off completely, and voltage conversion module 10 can not consume vehicle mounted power supply 5's output current under the dormancy state, and is corresponding, also need not to adopt the voltage conversion module 10 that quiescent operating current is littleer relatively, and circuit manufacturing cost is also lower.
In an alternative embodiment of the present invention, as shown in fig. 3, the device 1 further comprises:
and the voltage detection module 16 is connected between the power supply switch module 14 and the main control chip 3, and is used for detecting the actual voltage output by the vehicle-mounted power supply 5 when the power supply switch module 14 is switched on and sending the actual detection voltage value obtained by detection to the main control chip 3, and the main control chip 3 judges whether the vehicle-mounted power supply 5 is abnormal in power supply according to the actual detection voltage value.
In this embodiment, the voltage detection module 16 is further arranged to detect the actual voltage output by the vehicle-mounted power supply 5 and send the actual detected voltage value to the main control chip 3, so that the main control chip 3 can conveniently judge whether the vehicle-mounted power supply 5 is abnormal in power supply (for example, a power loss phenomenon), and further the main control chip 3 can perform corresponding actions to control the power supply switch module 14 to be switched off, thereby avoiding damage to the vehicle-mounted power supply 5 and ensuring normal and stable operation of a circuit; and voltage detection module 16 gets the electricity at power supply switch module 14 rear end, and during the dormancy, power supply switch module 14 is in the off-state, and voltage detection module 16 does not consume the electric current, further reduces whole on-vehicle master control system's dormancy electric current.
In an optional embodiment of the present invention, the power switch module 14 is a MOS transistor, a triode, or an electronic switch. In this embodiment, no matter the power supply switch module 14 adopts an MOS transistor, a triode, or an electronic switch, the power supply circuit can be effectively disconnected and connected, and in specific implementation, different forms of power supply switch modules 14 can be flexibly selected to reduce the design cost.
In an optional embodiment of the present invention, the state control module 12 is a CAN chip for generating a switch-on signal according to a CAN signal from an external trigger source. In this embodiment, the state control module 12 uses a corresponding CAN chip, and CAN be triggered and awakened according to CAN signals sent by different external trigger sources 7.
In an optional embodiment of the present invention, the CAN chip is a low power consumption chip. In this embodiment, the CAN chip is directly powered by the vehicle-mounted power supply 5, and the low power consumption chip is used, so that current consumption of the chip in a sleep state is reduced.
In an optional embodiment of the present invention, the state control module 12 is a LIN chip for generating a turn-on signal according to a LIN signal from an external trigger source. In this embodiment, the state control module 12 uses a corresponding LIN chip, and can be triggered and awakened according to LIN signals sent by different external trigger sources 7.
In an optional embodiment of the present invention, the LIN chip is a low power chip. In the embodiment, the LIN chip is directly powered by the vehicle-mounted power supply 5, and the low-power chip is adopted, so that the current consumption of the chip in the dormant state is reduced.
In an optional embodiment of the present invention, the state control module 12 is an MCU chip for generating a switch-on signal according to a level signal from an external trigger source. In this embodiment, the state control module 12 adopts a corresponding MCU chip, and can be triggered and awakened according to level signals sent by different external trigger sources 7.
In an optional embodiment of the present invention, the MCU chip is a low power consumption chip. In this embodiment, the MCU chip is directly powered by the vehicle-mounted power supply 5, and the low power consumption chip is used to reduce the current consumption of the chip in the sleep state.
On the other hand, as shown in fig. 1-3, the embodiment of the present invention provides the following technical solutions: a vehicle-mounted master control system comprises a master control chip 3 and a power management device 1, wherein the master control chip 3 is connected with vehicle-mounted electronic equipment 9 to control the working state of the vehicle-mounted electronic equipment 9, the power management device 1 supplies power to the master control chip 3, the power management device 1 is the power management device of the embodiment, the master control chip 3 is respectively connected with a state control module 12 of the power management device 1 and the vehicle-mounted electronic equipment 9, and the master control chip 3 responds to an external dormancy trigger signal sent by an external trigger source 7 to control the vehicle-mounted electronic equipment 9 to stop working and generate the dormancy signal to the state control module 12. In this embodiment, the vehicle-mounted main control system adopts the power management device, which can effectively reduce the current consumption in the dormant state and reduce the design cost; correspondingly, the main control chip 3 generates a dormancy signal according to the external dormancy trigger signal, so that the dormancy of the whole vehicle-mounted main control system is realized, and the power consumption of the system is reduced.
In specific implementation, when the external trigger source 7 sends an external wake-up trigger signal, the state control module 12 responds to the external wake-up trigger signal sent by the external trigger source 7 to control the power supply switch module 14 to be switched on, supplies power to the voltage conversion module 10, converts the external wake-up trigger signal into a predetermined working voltage, and supplies power to the main control chip 3, and after the main control chip 3 is powered on, the state control module 12 controls the state control module 12 to always output a switching-on signal, so that the state control module 12 is always switched on, and simultaneously controls the vehicle-mounted electronic device 9 to enter a working state;
when the external trigger source 7 sends an external sleep trigger signal, two control logics exist for stopping the vehicle-mounted electronic device 9: as shown in fig. 1, in the first mode, the state control module 12 sends a received external sleep trigger signal to the main control chip 3, the main control chip 3 responds to the received sleep trigger signal to control the vehicle-mounted electronic device 9 to stop working and generate a sleep signal to the state control module 12, the state control module 12 responds to the sleep signal to control the power supply switch module 14 to be switched off, the power supply of the main control chip 3 is switched off, and the whole system is in a sleep state; as shown in fig. 2, the second method is that the main control chip 3 directly receives an external sleep trigger signal sent by the external trigger source 7, and then controls the vehicle-mounted electronic device 9 to stop working and generate a sleep signal to the state control module 12.
In practical implementation, the vehicle-mounted electronic device 9 has many forms, such as: vehicle radar device, vehicle multimedia device, vehicle camera or vehicle event data recorder etc..
In specific implementation, the main control chip 3 is an SOC chip or an MCU chip. In this embodiment, the main control chip 3 adopts an SOC chip or an MCU chip to effectively control the vehicle-mounted electronic device, and when the main control chip 3 is implemented, different types of main control chips can be used according to different design requirements.
The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, and these forms are within the scope of the present invention.
Claims (10)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116853143A (en) * | 2023-07-21 | 2023-10-10 | 扬州航盛科技有限公司 | A system and method for realizing low quiescent current in vehicle central control STR mode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116853143A (en) * | 2023-07-21 | 2023-10-10 | 扬州航盛科技有限公司 | A system and method for realizing low quiescent current in vehicle central control STR mode |
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