CN210693887U

CN210693887U - On-vehicle electronic equipment system of switching on and shutting down

Info

Publication number: CN210693887U
Application number: CN201922181667.7U
Authority: CN
Inventors: 张金全; 陶洋; 陈小军; 黄章良; 鲁星华
Original assignee: Guangzhou Robustel Technologies Co ltd
Current assignee: Guangzhou Lubangtong IoT Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-06-05
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses an on-vehicle electronic equipment system of switching on and shutting down, including the power module that is used for the power supply for automotive electronics, still including being used for detecting the ACC signals of car and enabling the ACC detection circuitry that power module started and being used for the treater that is used for controlling power module power supply and time delay disconnection according to the detection signal of ACC detection circuitry with ACC detection circuitry connection, ACC detection circuitry is connected with power module, power module is including the second power that is used for the first power that makes for the power supply of automotive electronics and is used for signal transmission between ACC detection circuitry and treater to use, first power and second power all are connected with ACC detection circuitry. Through the utility model discloses can effectively save the electric energy, improve the power supply performance.

Description

On-vehicle electronic equipment system of switching on and shutting down

Technical Field

The utility model relates to an on-vehicle electronic control field especially relates to an on-vehicle electronic equipment system of shutting down.

Background

The English full name of ACC is "Adaptive Cruise Control", and Chinese means "Adaptive Cruise Control". The adaptive cruise control system is an intelligent automatic control system, which is developed on the basis of the existing cruise control technology. The key ACC gear of the automobile is a power supply which can supply power to electronic equipment in the automobile without starting the automobile. The vehicle-mounted electronic equipment needs to be powered by the automobile, the electronic equipment is directly connected to the automobile battery to obtain power supply, and the electric quantity of the automobile battery can be exhausted if the electronic equipment is not turned off for a long time after the automobile is flamed out, or the electronic equipment needs to be manually turned on and turned off. Therefore, the method for obtaining the start and stop of the automobile through the ACC signal is used for controlling the power supply switch of the electronic equipment, and can be used for effectively saving the electric energy.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a vehicle-mounted electronic equipment power on-off system can effectively save the electric energy, improves the power supply performance.

In order to achieve the purpose, the on-board electronic equipment startup and shutdown system comprises a power supply module for supplying power to the electronic equipment of the automobile, an ACC detection circuit for detecting an ACC power signal of the automobile and enabling the power supply module to be started according to a detection signal, and a processor connected with the ACC detection circuit and used for controlling the power supply module to supply power and be disconnected in a delayed mode according to the detection signal of the ACC detection circuit, wherein the ACC detection circuit is connected with the power supply module, the power supply module comprises a first power supply for enabling the power supply of the electronic equipment of the automobile and a second power supply for signal transmission between the ACC detection circuit and the processor, and the first power supply and the second power supply are both connected with the ACC detection circuit.

Preferably, the ACC detection circuit comprises a joint for accessing an ACC power signal of an automobile, a third MOS transistor, a fourth MOS transistor, a fifth MOS transistor and a sixth MOS transistor, the joint is respectively connected with a gate of the fourth MOS transistor and a gate of the fifth MOS transistor through a first resistor, a drain of the fourth MOS transistor is connected with a second power supply, a source of the fourth MOS transistor is connected with a ground wire through the sixth resistor and is connected with a signal input end of the processor through the fifth resistor, a drain of the fifth MOS transistor is connected with a gate of the third MOS transistor and a source of the fifth MOS transistor is connected with the ground wire; the grid electrode of the third MOS tube is further connected with the drain electrode of the sixth MOS tube and is further connected with a first power supply through a second resistor, the source electrode of the third MOS tube is connected with the first power supply, the drain electrode of the third MOS tube is connected with the power supply output end, the grid electrode of the sixth MOS tube is connected with the signal output end of the processor, and the source electrode of the sixth MOS tube is connected with the ground wire.

Preferably, the gate connection end of the fourth MOS transistor and the gate connection end of the fifth MOS transistor are further connected to a ground line through an anti-static TVS transistor and a voltage regulator transistor, respectively.

Preferably, the third MOS transistor is a PMOS transistor, and the fourth MOS transistor, the fifth MOS transistor and the sixth MOS transistor are NMOS transistors.

Preferably, the drain of the third MOS transistor is connected to the power supply output terminal through a third resistor and the power supply output terminal is connected to the ground through a fourth resistor, so that a voltage divider circuit is formed by the third resistor and the fourth resistor.

Compared with the prior art, the utility model, its beneficial effect lies in:

the utility model discloses well ACC detection circuitry detects the ACC signals of car and combine the treater to control power module's power supply, can monitor the automobile staring and put out fire and control when the automobile staring and start the power supply, the automobile is put out fire after, and the power supply is closed in control delay to can effectively save the electric energy, improve the power supply performance. The utility model discloses use the original paper simple with low costs, easily production.

Drawings

FIG. 1 is a block diagram of the present invention;

fig. 2 is a schematic diagram of a circuit structure of the ACC detection circuit according to the present invention;

fig. 3 is a schematic structural diagram of the middle joint of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples, which are not intended to limit the scope of the invention, but are intended to be within the scope of the claims.

As shown in fig. 1 to 3, the utility model provides an on-vehicle electronic equipment on-off system, including being used for the power module 2 for the power supply of automotive electronic equipment, still including being used for detecting the ACC signals to the car and enabling ACC detection circuitry 1 that power module 2 started and being connected with ACC detection circuitry 1 and being used for controlling power module 2 power supply and the treater 3 of time delay disconnection according to ACC detection circuitry 1's detection signal, ACC detection circuitry 1 is connected with power module 2, power module 2 is including being used for the first power VIN + that makes for the power supply of automotive electronic equipment and being used for the second power ACC 3.3VD that signal transmission used between detection circuitry 1 and treater 3, first power VIN + and second power 3.3VD all are connected with ACC detection circuitry 1.

The ACC detection circuit 1 comprises a joint J1, a third MOS transistor V3, a fourth MOS transistor V4, a fifth MOS transistor V5 and a sixth MOS transistor V6 for accessing an ACC power signal of the automobile, the joint J1 is connected with the gate of the fourth MOS transistor V4 and the gate of the fifth MOS transistor V5 respectively through a first resistor R1, the drain of the fourth MOS transistor V4 is connected with the second power supply 3.3VD, the source of the fourth MOS transistor V4 is connected with the ground through a sixth resistor R6 and with the signal input terminal _ ACC _ DETECT _ TO _ CPU of the processor 3 through a fifth resistor R5, the drain of the fifth MOS transistor V5 is connected with the gate of the third MOS transistor V3 and the source of the fifth MOS transistor V5 is connected with the ground; the gate of the third MOS transistor V3 is further connected to the drain of the sixth MOS transistor V6 and further connected to the first power source VIN + through the second resistor R2, the source of the third MOS transistor V3 is connected to the first power source VIN +, the drain of the third MOS transistor V3 is connected to the power supply output terminal PWR _ EN, the gate of the sixth MOS transistor V6 is connected to the signal output terminal CPU _ EN _ PWR of the processor 3, and the source of the sixth MOS transistor V6 is connected to the ground.

The grid electrode of the fourth MOS transistor V4 and the grid electrode connecting end of the fifth MOS transistor V5 are further connected with the ground wire through an anti-static TVS transistor V1 and a voltage regulator transistor V2 respectively. The third MOS transistor V3 is a PMOS transistor, and the fourth MOS transistor V4, the fifth MOS transistor V5 and the sixth MOS transistor V6 are NMOS transistors. The drain of the third MOS transistor V3 is connected to the power supply output terminal PWR _ EN through a third resistor R3 and the power supply output terminal PWR _ EN is connected to the ground through a fourth resistor R4, thereby forming a voltage dividing circuit through the third resistor R3 and the fourth resistor R4.

In the present embodiment, the processor 3 is a CPU. The first resistor R1 is a current-limiting resistor, and the voltage regulator V2 is used to prevent the input voltage from exceeding the maximum allowable voltage of the fourth MOS transistor V4 and the fifth MOS transistor V5. The second resistor R2 is a bias resistor; the fifth resistor R5 is a current-limiting resistor; the sixth resistor R6 is a pull-down resistor for ensuring that the level of the signal input terminal ACC _ DETECT _ TO _ CPU is 0 when the fourth MOS transistor V4 is turned off. The second power supply 3.3VD is disposed at the PWR _ EN end of the power supply output terminal, so that the second power supply 3.3VD works to output a direct current 3.3V voltage after the first power supply VIN + starts working and supplying power.

In the embodiment, in operation, when an automobile is started, an ACC power signal is input TO the ACC detection circuit 1, the fifth MOS transistor V5 is turned on TO control the third MOS transistor V3 TO be turned on, the power supply module 2 starts TO be started, the first power source VIN + power supply immediately starts TO supply power TO the second power source 3.3VD, the fourth MOS transistor V4 is turned on, and the signal input end ACC _ DETECT _ TO _ CPU obtains a high level; the processor 3 controls the signal output terminal CPU _ EN _ PWR to output a high level, and controls the sixth MOS transistor V6 to be turned on, so that the third MOS transistor V3 is controlled to be turned on jointly by the third MOS transistor V3 and the sixth MOS transistor V6, and the first power supply VIN + is continuously supplied. When the automobile is flameout, the ACC power signal disappears, the fourth MOS transistor V4 and the fifth MOS transistor V5 are both turned off, the signal input end ACC _ DETECT _ TO _ CPU is at a low level, the processor 3 controls the signal output end CPU _ EN _ PWR TO continuously output a high level, and controls the sixth MOS transistor V6 and the third MOS transistor V3 TO be turned on, so that the first power VIN + is continuously supplied with power, the processor 3 counts down, and after the timing time expires, the processor 3 controls the signal output end CPU _ EN _ PWR TO output a low level, so that the sixth MOS transistor V6 and the third MOS transistor V3 are turned off, thereby realizing the delayed power-off.

The above is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility of the invention and the utility of the patent.

Claims

1. The utility model provides a vehicle-mounted electronic equipment system of switching on and shutting down, includes power module (2) that is used for supplying power to automotive electronics, its characterized in that: the automobile power supply device further comprises an ACC detection circuit (1) used for detecting an ACC power signal of an automobile and enabling the power supply module (2) to be started according to the detection signal and a processor (3) connected with the ACC detection circuit (1) and used for controlling power supply and delayed disconnection of the power supply module (2) according to the detection signal of the ACC detection circuit (1), the ACC detection circuit (1) is connected with the power supply module (2), the power supply module (2) comprises a first power supply (VIN +) used for enabling power supply of automobile electronic equipment and a second power supply (3.3VD) used for signal transmission between the ACC detection circuit (1) and the processor (3), and the first power supply (VIN +) and the second power supply (3.3VD) are both connected with the ACC detection circuit (1).

2. The on-off system of the vehicle-mounted electronic equipment according to claim 1, wherein: the ACC detection circuit (1) comprises a joint (J1), a third MOS tube (V3), a fourth MOS tube (V4), a fifth MOS tube (V5) and a sixth MOS tube (V6) for accessing an ACC power supply signal of an automobile, wherein the joint (J1) is respectively connected with a grid electrode of the fourth MOS tube (V4) and a grid electrode of the fifth MOS tube (V5) through a first resistor (R1), a drain electrode of the fourth MOS tube (V4) is connected with a second power supply (3.3VD), a source electrode of the fourth MOS tube (V4) is connected with a ground wire through a sixth resistor (R6) and is connected with a signal input end (ACC _ DET _ TO _ CPU) of a processor (3) through a fifth resistor (R5), a drain electrode of the fifth MOS tube (V5) is connected with a grid electrode of the third MOS tube (V3) and a source electrode of the fifth MOS tube (V5) is connected with the ground wire; the grid electrode of the third MOS tube (V3) is also connected with the drain electrode of a sixth MOS tube (V6) and is also connected with a first power supply (VIN +) through a second resistor (R2), the source electrode of the third MOS tube (V3) is connected with the first power supply (VIN +), the drain electrode of the third MOS tube (V3) is connected with a power supply output end (PWR _ EN), the grid electrode of the sixth MOS tube (V6) is connected with a signal output end (CPU _ EN _ PWR) of the processor (3), and the source electrode of the sixth MOS tube (V6) is connected with the ground wire.

3. The on-off system of the vehicle-mounted electronic equipment according to claim 2, wherein: and the grid electrode connecting end of the fourth MOS tube (V4) and the grid electrode connecting end of the fifth MOS tube (V5) are also respectively connected with the ground wire through an anti-static TVS tube (V1) and a voltage regulator tube (V2).

4. The on-off system of the vehicle-mounted electronic equipment according to claim 2, wherein: the third MOS transistor (V3) is a PMOS transistor, and the fourth MOS transistor (V4), the fifth MOS transistor (V5) and the sixth MOS transistor (V6) are NMOS transistors.

5. The on-off system of the vehicle-mounted electronic equipment according to claim 2, wherein: the drain of the third MOS transistor (V3) is connected to the power supply output terminal (PWR _ EN) through a third resistor (R3) and the power supply output terminal (PWR _ EN) is connected to the ground through a fourth resistor (R4), so that a voltage divider circuit is formed by the third resistor (R3) and the fourth resistor (R4).