阅读说明：本技术 一种汽车唤醒电路及工作方法 (Automobile wake-up circuit and working method ) 是由 廖付永 王长喜 杨会岭 集立业 于 2019-10-14 设计创作，主要内容包括：本发明涉及汽车控制技术领域,一种汽车唤醒电路及工作方法。所述的一种汽车唤醒电路包括：电压波动检测电路、电压波动输出电路、电压驱动输出电路、MCU控制电路；所述的电压波动检测电路与电压波动输出电路相连接,所述的电压波动输出电路与电压驱动输出电路相连接,所述的电压驱动输出电路与MCU控制电路相连接；所述的电压波动检测电路用于获取电压的波动信号；所述的电压波动输出电路用于通过电压的波动进行电路的导通与截止；所述的电压驱动输出电路用于信号的输出,实现汽车的唤醒。通过本发明所述的方法能够实现汽车的唤醒。(The invention relates to the technical field of automobile control, in particular to an automobile wake-up circuit and a working method thereof. The automobile wake-up circuit comprises: the voltage fluctuation detection circuit, the voltage fluctuation output circuit, the voltage drive output circuit and the MCU control circuit; the voltage fluctuation detection circuit is connected with the voltage fluctuation output circuit, the voltage fluctuation output circuit is connected with the voltage driving output circuit, and the voltage driving output circuit is connected with the MCU control circuit; the voltage fluctuation detection circuit is used for acquiring a fluctuation signal of voltage; the voltage fluctuation output circuit is used for conducting and stopping the circuit through voltage fluctuation; the voltage driving output circuit is used for outputting signals, and awakening of the automobile is achieved. The method can realize the awakening of the automobile.)

1. An automobile wake-up circuit, comprising:

the voltage fluctuation detection circuit, the voltage fluctuation output circuit, the voltage drive output circuit and the MCU control circuit;

the voltage fluctuation detection circuit is connected with the voltage fluctuation output circuit, the voltage fluctuation output circuit is connected with the voltage driving output circuit, and the voltage driving output circuit is connected with the MCU control circuit;

the voltage fluctuation detection circuit is used for acquiring a fluctuation signal of voltage;

the voltage fluctuation output circuit is used for conducting and stopping the circuit through voltage fluctuation;

the voltage driving output circuit is used for outputting signals, and awakening of the automobile is achieved.

2. The wake-up circuit for car as claimed in claim 1, wherein the voltage fluctuation detection circuit comprises: the circuit comprises an input voltage VCC, a diode D1, a resistor R1, a triode Q1 and a resistor R2;

the input voltage VCC is respectively connected with one end of a diode D1, one end of a resistor R1 and an emitting electrode of a triode Q1, a base electrode of the triode Q1 is connected with one end of a resistor R2, a collector electrode of the triode Q1 is connected with a voltage fluctuation output circuit, the other end of a diode D1, the other end of the resistor R1 and the other end of the resistor R2 are respectively connected with one end of a capacitor C1, and the other end of the capacitor C1 is connected with a reference ground.

3. The wake-up circuit for car as claimed in claim 2, wherein the voltage fluctuation output circuit comprises a resistor R3, a diode D2, a resistor R4, a resistor R5, a transistor Q2;

the base electrode of the triode Q1 is connected with one end of a resistor R3, and the other end of the resistor R3 is connected with a pin 2 of a diode D2; pin 3 of diode D2 is connected with one end of resistance R4, pin 2 of diode D2 is connected with MCU control circuit, the other end of resistance R4 is connected with one end of resistance R5, the base of triode Q2 respectively, the other end of resistance R5 is connected with the projecting pole of triode Q2, the collecting electrode of triode Q2 be connected with voltage drive output circuit.

4. The wake-up circuit for car as claimed in claim 3, wherein the voltage driving output circuit comprises a resistor R6, a MOS transistor Q3;

the collector of the triode Q2 is respectively connected with the grid of the MOS tube Q3 and one end of the resistor R6, the other end of the resistor R6 is connected with the source of the MOS tube Q3, and the drain of the MOS tube Q3 is VOUT output.

5. An operating method of an automobile wake-up circuit is characterized by comprising the following steps:

the voltage fluctuation detection circuit detects a voltage change signal;

the voltage fluctuation detection circuit controls the voltage fluctuation output circuit to be switched on or switched off according to the voltage change signal, so that the voltage driving output circuit is controlled to be switched on or switched off;

under the state that the voltage driving output circuit is conducted, the MCU control circuit outputs a high level to the voltage driving output circuit;

and under the cut-off state of the voltage driving output circuit, the MCU control circuit outputs a low level to the voltage driving output circuit.

6. The operating method of claim 5, wherein the voltage fluctuation detection circuit detects the voltage variation signal by determining the charging and stopping of the circuit.

7. The operating method of the car wake-up circuit according to claim 1, wherein the charging process is as follows: the VCC charges the voltage fluctuation detection circuit, thereby turning on the voltage fluctuation detection circuit and turning on the voltage fluctuation output circuit and the voltage drive output circuit.

8. The operating method of the car wake-up circuit according to claim 6, wherein the stopping of charging is: when the voltage detection circuit is charged, the circuit stops charging, and the voltage detection circuit is cut off, so that the voltage fluctuation output circuit and the voltage driving output circuit are cut off.

9. The operating method of an automobile wake-up circuit according to claim 8, wherein the stop-charging state is a low power consumption state of the circuit, and the voltage-driven output circuit no longer outputs voltage.

10. The operating method of the car wake-up circuit according to claim 8, wherein the voltage detection circuit further comprises a discharge state, and the discharge state is a condition for collecting voltage wake-up.

Technical Field

The invention relates to the technical field of automobile control, in particular to an automobile wake-up circuit and a working method thereof.

Background

With the development of society, the living standard of people is improved, the demand of automobiles is continuously increased, and in order to save energy, the generation of new energy automobiles reduces the environmental pollution and the energy consumption more, which is a development trend.

The electric automobile is a vehicle which takes a vehicle-mounted power supply as power and drives wheels to run by using a motor, and meets various requirements of road traffic and safety regulations. The new energy automobile can be divided into a pure electric automobile and a hybrid electric automobile, but the new energy automobile is used as the brain of the pure electric automobile, and the research and design of the whole automobile controller are particularly important. The vehicle control unit for the pure electric vehicle at present has the following defects: the adaptability to the vehicle type is poor, and the control is not flexible enough; and the whole vehicle controller is always in a working state, so that the energy consumption is large.

Therefore, the present invention provides a wake-up circuit for an automobile and a method for operating the same.

Disclosure of Invention

The invention provides an automobile wake-up circuit and an automobile wake-up system. The automobile wake-up circuit and the working method thereof can realize the wake-up of the automobile.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

an automobile wake-up circuit comprising:

the voltage fluctuation detection circuit, the voltage fluctuation output circuit, the voltage drive output circuit and the MCU control circuit;

the voltage fluctuation detection circuit is connected with the voltage fluctuation output circuit, the voltage fluctuation output circuit is connected with the voltage driving output circuit, and the voltage driving output circuit is connected with the MCU control circuit;

the voltage fluctuation detection circuit is used for acquiring a fluctuation signal of voltage;

the voltage fluctuation output circuit is used for conducting and stopping the circuit through voltage fluctuation;

the voltage driving output circuit is used for outputting signals, and awakening of the automobile is achieved.

Preferably, the voltage fluctuation detection circuit includes: the circuit comprises an input voltage VCC, a diode D1, a resistor R1, a triode Q1 and a resistor R2;

the input voltage VCC is respectively connected with one end of a diode D1, one end of a resistor R1 and an emitting electrode of a triode Q1, a base electrode of the triode Q1 is connected with one end of a resistor R2, a collector electrode of the triode Q1 is connected with a voltage fluctuation output circuit, the other end of a diode D1, the other end of the resistor R1 and the other end of the resistor R2 are respectively connected with one end of a capacitor C1, and the other end of the capacitor C1 is connected with a reference ground.

Preferably, the voltage fluctuation output circuit comprises a resistor R3, a diode D2, a resistor R4, a resistor R5 and a triode Q2;

the base electrode of the triode Q1 is connected with one end of a resistor R3, and the other end of the resistor R3 is connected with a pin 2 of a diode D2; pin 3 of diode D2 is connected with one end of resistance R4, pin 2 of diode D2 is connected with MCU control circuit, the other end of resistance R4 is connected with one end of resistance R5, the base of triode Q2 respectively, the other end of resistance R5 is connected with the projecting pole of triode Q2, the collecting electrode of triode Q2 be connected with voltage drive output circuit.

Preferably, the voltage driving output circuit comprises a resistor R6 and a MOS transistor Q3;

the collector of the triode Q2 is respectively connected with the grid of the MOS tube Q3 and one end of the resistor R6, the other end of the resistor R6 is connected with the source of the MOS tube Q3, and the drain of the MOS tube Q3 is VOUT output.

An operating method of an automobile wake-up circuit comprises the following steps:

the voltage fluctuation detection circuit detects a voltage change signal;

the voltage fluctuation detection circuit controls the voltage fluctuation output circuit to be switched on or switched off according to the voltage change signal, so that the voltage driving output circuit is controlled to be switched on or switched off;

under the state that the voltage driving output circuit is conducted, the MCU control circuit outputs a high level to the voltage driving output circuit;

and under the cut-off state of the voltage driving output circuit, the MCU control circuit outputs a low level to the voltage driving output circuit.

Preferably, the voltage fluctuation detection circuit detects the voltage variation signal by the process of charging and stopping charging of the circuit. The capacitor in the voltage fluctuation detection circuit is charged after being electrified, when the capacitor is fully charged, the circuit is cut off, the charging is stopped, and the whole circuit is in a dormant state, so that the whole circuit has an energy-saving effect.

Preferably, the charging process is as follows: the VCC charges the voltage fluctuation detection circuit, thereby turning on the voltage fluctuation detection circuit and turning on the voltage fluctuation output circuit and the voltage drive output circuit.

Preferably, the stopping of charging is: when the voltage detection circuit is charged, the circuit stops charging, and the voltage detection circuit is cut off, so that the voltage fluctuation output circuit and the voltage driving output circuit are cut off.

Preferably, the charging stop state is a low power consumption state of the circuit, and the voltage driving output circuit does not output the voltage any more.

Preferably, the voltage detection circuit further comprises a discharge state, and the discharge state is a condition for waking up by collecting the voltage. When the ignition voltage fluctuates and wakes up, the circuit is in a normal working state again.

Compared with the prior art, the invention has the beneficial effects that: the invention realizes the awakening of the automobile through the voltage fluctuation detection circuit, the voltage fluctuation output circuit, the voltage driving output circuit and the MCU control circuit. The capacitor is charged by the circuit after power-on, and the circuit is in a low power consumption state after the power-on, so that the method is more energy-saving, and when a wake-up condition exists, the circuit is reactivated to be in a normal working state.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic circuit diagram of an automobile wake-up circuit according to the present invention;

FIG. 2 is a flow chart of a method for operating the wake-up circuit of the vehicle according to the present invention;

fig. 3 is a circuit structure diagram of an automobile wake-up circuit according to the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate only the basic flow diagram of the invention, and therefore they show only the flow associated with the invention.