CN114954150A - Vehicle intelligent control device and method based on universal chip - Google Patents

Abstract

The invention discloses a vehicle intelligent control device and method based on a universal chip, relates to the technical field of special control in the automobile industry, and aims to solve the problem that civil electronic components are designed to have the anti-interference capability of a vehicle-level chip. The control chip is powered by the isolated conversion circuit to operate, meanwhile, the control chip is isolated from the driving module and the acquisition unit by the isolation module, the isolation module transmits information by adopting a non-electric signal and is not directly electrically connected, so that the logical operation, the control input and the signal acquisition of the control chip are isolated from other parts of the control device, the electric signal interference caused by environmental factors is isolated, the control condition of misoperation or failure is avoided, the conditions such as the integral stability and the service life of the control device meet the vehicle specification level requirements, and the vehicle function diversity is not limited by the vehicle specification level chip capacity condition.

Description

A kind of vehicle intelligent control device and method based on general chip

technical field

The invention relates to the technical field of special control in the automobile industry, in particular to a vehicle intelligent control device and method based on a universal chip.

Background technique

With the rapid development of automotive electronic technology, there are more and more special functions in cars, such as car seats with position adjustment function, ventilation function, heating function, ambient lighting function, massage function, etc. Therefore, there are more and more control devices implementing these control functions, and the supported functions are increasingly rich. However, the heart of the control device lies in the control chip. The control device realizes various complex logic operations and control through the control chip. It can be seen that the automotive electronic technology firstly controls the production capacity of the chip.

In the technical field of control chips, there are often strict divisions for different control scenarios, and special fields have strict requirements on control chips. In the field of automotive electronics technology, automotive-grade chips are often required to be used in control devices. Compared with general-purpose chips, the two may have little difference in the implementation of logic operations and control, but the scenarios used in automobiles require the control chips to have higher stability to avoid safety. The internal architecture of the vehicle-grade control chip is specifically designed to meet the anti-interference ability. The general-purpose chip is used in general electrical scenarios without corresponding parameters.

It can be understood that if the vehicle control device adopts a general-purpose chip, once the control fails or the control does not respond, it will have catastrophic consequences. Then, the production capacity of automotive-grade chips cannot meet the needs of current automotive control devices, and cannot improve the needs of users for the diversity of automotive functions.

SUMMARY OF THE INVENTION

In order to overcome the problems existing in the prior art, the present invention provides a vehicle intelligent control device and method based on a general-purpose chip, which can realize the use of civil electronic components to design a vehicle-grade-grade chip in an environment where one-chip vehicle-grade chips are hard to obtain. The circuit system of the chip's anti-interference ability.

In order to achieve the above purpose, in the first aspect, the present invention provides a technical solution: a general-purpose chip-based vehicle intelligent control device, the control device includes a control chip, a power module, a drive module and a collection unit, wherein the power module It includes a first conversion unit, which is an isolated conversion circuit and is connected to a control chip for power supply; the control device also includes an isolation module interposed between the input and output by non-electrical signals, and the control chip is connected through the isolation module in the driving module to control it to drive the controlled equipment to run; the acquisition unit obtains the electrical parameters of the controlled equipment through the isolation module.

In the above control device, preferably, the drive module includes a motor drive unit, the isolation module includes a first optocoupler, and the control chip and the motor drive unit are connected through the optocoupler.

Preferably, in the above control device, the power module is provided with a second EMC filter, and obtains driving power from the vehicle battery through the input end of the second EMC filter.

The above-mentioned control device preferably includes, the acquisition unit includes a current sensor, the isolation module includes a Hall isolation circuit disposed at the input end of the current sensor, and the input end of the current sensor is used for the output end of the second EMC filter to obtain driving power , the output end of the current sensor is connected to the control chip.

In the above control device, preferably, the drive module includes an IGBT driver, and the isolation module includes an optical coupling circuit disposed at an input end of the IGBT driver, and the input end of the IGBT driver is directly connected to the control chip.

Preferably, in the above control device, the power supply module further includes a second conversion unit, the second conversion unit is provided with a first EMC filter, and obtains power supply from a car key starting power supply through the first EMC filter, and the first EMC filter is used. The second conversion unit is connected to the isolation module for power supply and is connected to the first conversion unit for power supply.

The above-mentioned control device preferably includes, the control device further comprises a 232 interface, a 232 transceiver and a digital isolator, the 232 interface is connected to the input end of the 232 transceiver, and the output end of the 232 transceiver is transmitted and connected to the 232 transceiver through the digital isolator. control chip.

Preferably, in the above control device, the control device further includes a key switch, the isolation module includes a second optocoupler, and the key switch is connected to the control chip through the second optocoupler.

Preferably, in the above control device, the control chip is a civilian-grade chip, and the control device is used to control the car seat.

In order to achieve the above purpose, in the second aspect, the present invention provides a technical solution: an intelligent control method for vehicles based on a general-purpose chip, which is applied to a control device including a control chip, a drive module, a collection unit, and a power supply module, wherein the method It includes: the power supply module supplies power to the control chip through an isolated conversion circuit; the control chip is isolated and coupled to the driving module to control it to drive the controlled device to operate; the control chip is isolated and coupled to the acquisition unit to control its Drive the controlled device to run.

Compared with the prior art, the beneficial effects of the present invention are as follows:

(1) In the control device of the present invention, the control chip is powered by an isolated conversion circuit, and the connection between the control chip and the driving module and the acquisition unit is isolated by the isolation module, and the isolation module uses non-electrical signals to transmit information without Direct electrical connection, so that the logic operation, control input and signal acquisition of the control chip are isolated from other parts of the control device, so that the electrical signal interference caused by environmental factors is isolated, thereby avoiding the malfunction or malfunction of the control situation. It occurs, so that the overall stability and service life of the control device meet the requirements of the vehicle level, so that the functional diversity of the car can not be limited by the production capacity of the vehicle level chip.

(2) The control device of the present invention can be used to control automobile seat motors, massage pneumatic mechanisms, ventilation fans, heating fans, and ambient lights, and can also be used to interact with displays and operating key surfaces, and has inputs for debugging and maintenance. At the same time, the above control, interaction and input interfaces are isolated from the control chip by the isolation module, which makes the control chip more stable.

(3) The control device of the present invention further provides high-quality power supply for the control chip, the isolation module and the drive module by performing EMC filtering on the input of the power module, thereby reducing the interference input from the control device as a whole.

(4) The control device of the present invention further adopts different power input, so that the control chip uses the car key to start the power supply, and the drive module is made of the car battery, which physically isolates the low-voltage logic control part and the high-power drive part, and controls the chip at the same time. The opening and closing of the car key is synchronized with the opening and closing of the car key starter power supply.

The present invention will be further described below in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic functional structure diagram of a general-purpose chip-based vehicle intelligent control device according to an embodiment of the present invention.

FIG. 2 is a schematic flowchart of a general-purpose chip-based vehicle intelligent control method according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of a circuit structure of a specific vehicle intelligent control device according to an embodiment of the present invention.

FIG. 4 is a first partial detailed circuit structure diagram of the power module in the control device of the embodiment of FIG. 3 .

FIG. 5 is a second partial detailed circuit structure diagram of the power module in the control device of the embodiment of FIG. 3 .

FIG. 6 is a third partial detailed circuit structure diagram of the power module in the control device of the embodiment of FIG. 3 .

FIG. 7 is a first partial detailed circuit structure diagram of the driving module in the control device of the embodiment of FIG. 3 .

FIG. 8 is a second partial detailed circuit structure diagram of the driving module in the control device of the embodiment of FIG. 3 .

FIG. 9 is a first partial detailed circuit structure diagram of the control I/O in the control device of the embodiment of FIG. 3 .

FIG. 10 is a second partial detailed circuit structure diagram of the control I/O in the control device of the embodiment of FIG. 3 .

Reference numerals: 10, control chip; 20, power supply module; 21, first conversion unit; 22, second conversion unit; 23, first EMC filter; 24, second EMC filter; 30, drive module; 31 , motor drive unit; 32, IGBT driver; 40, acquisition unit; 41, current sensor; 50, isolation module; 51, first optocoupler; 52, second optocoupler; 53, optocoupler circuit; 54, Huo Seoul isolation circuit; 55, the third optocoupler; 56, digital isolator; 61, 232 transceiver.

Detailed ways

In order to better illustrate the objectives, technical solutions and advantages of the present invention, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

As shown in FIG. 1 , a general-purpose chip-based vehicle intelligent control device includes a control chip 10 , a power module 20 , a drive module 30 , a collection unit 40 and an isolation module 50 . The power supply module 20 includes a first conversion unit 21, which is an isolated conversion circuit and is connected to the control chip 10 for power supply; the isolation module 50 is interposed between the input and output by non-electrical signals, and the control The chip 10 is connected to the driving module 30 through the isolation module 50 to control it to drive the controlled device to run; the acquisition unit 40 passes through the isolation module 50 to obtain electrical parameters of the controlled device.

As shown in FIG. 2 , in the second aspect, the technical solution provided by the present invention is: an intelligent control method for vehicles based on a general-purpose chip, which is applied to a control device including a control chip 10 , a drive module 30 , a collection unit 40 , and a power supply module 20 , wherein the method includes: the power supply module 20 supplies power to the control chip 10 through an isolated conversion circuit; the control chip 10 is isolated and coupled to the drive module 30 to control it to drive the controlled device to operate; the control chip 10 is isolated and coupled to the acquisition unit 40 to control it to drive the controlled device to run.

In this embodiment, the control chip 10 is a general-purpose chip, and does not need to meet the specifications for automobiles. At the same time, the power supply of the control chip 10 is an isolated DC-DC conversion circuit, which is a transformer structure including a primary side and a secondary side. The power supply is first converted into an electromagnetic signal on the primary side, and the electromagnetic signal is re-converted into the power supply on the secondary side. . When the power supply of the primary side is disturbed, the complex change can still maintain stability. Meanwhile, the control signal provided by the control chip 10 is isolated by the isolation module 50 and transmitted to the driving module 30 , and the parameters required to generate the control signal are collected by the acquisition unit 40 and isolated by the isolation module 50 and transmitted to the control chip 10 . It can be seen that the control chip 10 can realize the control function without being interfered by the power supply, controlled equipment and acquisition parameters, so that the stability of the operation of the control device of the present application is the same as or even exceeds that of other controllers with automotive-grade chips stability.

As shown in FIG. 3 , the control device of this embodiment includes a control chip 10 , a power supply module 20 , a driving module 30 and a collection unit 40 . Specifically, the power module 20 includes a first transformation unit 21 , a second transformation unit 22 , a first EMC filter 23 and a second EMC filter 24 . In detail, the second conversion unit 22 obtains the power supply from the vehicle key starting power supply through the first EMC filter 23, and can convert it into a 5V output voltage. The first transforming unit 21 is connected to the second transforming unit 22 to obtain 5V power and convert it into 3.3V output voltage through isolation. The control chip 10 is connected to the first conversion unit 21 to obtain 3.3V power. Since the power is obtained from the starting power source of the car key, the control chip 10 generates an action only after the car is started, preventing the control device from being started unexpectedly. The input end of the second EMC filter 24 is connected to the car battery, and can also be powered from a device whose door is connected to the battery. The second EMC filter 24 provides 12V power after filtering. It can be seen that the power supply module 20 provides power of 3.3V, 5V and 12V to meet the operation requirements of the control chip 10 , the isolation module 50 , the driving module 30 and the acquisition unit 40 .

Referring to FIGS. 4 to 6 , the power module 20 of this embodiment can provide power to the control chip 10 in an isolated manner. At the same time, the power connection of the power module 20 is filtered to ensure the high quality of the power.

As shown in FIG. 3 , in order to accurately control the driving power, in the control device of this embodiment, the acquisition unit 40 includes a current sensor 41 , and the isolation module 50 includes a Hall isolation circuit disposed at the input end of the current sensor 41 , which can collect the power of the power module 20 parameter. The input end of the current sensor 41 is used for the output end of the second EMC filter 24 to obtain driving power, and the output end of the current sensor 41 is connected to the control chip 10 .

Referring to FIG. 6 , in this embodiment, the current sensor 41 includes a chip of the ACS712 type, and a Hall isolation circuit is set at the input end thereof, and the current of the input power is input by means of isolation or 12V. Since the isolation module 50 is isolated, the current sensor 41 can be directly connected to the control chip 10 .

As shown in FIG. 3 , the control device of this embodiment can be used to control the motor of the car seat. Specifically, the drive module 30 includes a motor drive unit 31 , the isolation module 50 includes a first optocoupler 51 , and the control chip 10 and the motor drive unit 31 are connected through the optocoupler. Referring to FIG. 7 , the motor driving unit 31 includes a relay to drive the motor in an isolated manner. The 12V power connected to the first EMC filter 23 is supplied to the motor of the car seat via the motor drive unit 31 . The current sensor 41 and the motor driving unit 31 are both isolated from the control chip 10 to prevent the control chip 10 from being disturbed. It will be appreciated that the same circuit can also be used to control the massager air cylinder.

As shown in FIG. 3 , the control device of this embodiment can be used to control the ventilation and heating of the car seat. Specifically, the driving module 30 includes an IGBT driver 32 , the isolation module 50 includes an optical coupling circuit 53 disposed at the input end of the IGBT driver 32 , and the input end of the IGBT driver 32 is directly connected to the control chip 10 . Referring to FIG. 8 , the signals of the control chip 10 and the IGBT driver 32 are isolated from each other. Specifically, the IGBT driver 32 is a chip with a model of TLP107, and an optical coupling circuit 53 is provided at the input end thereof to prevent the control chip 10 from being disturbed.

As shown in FIG. 3 , the control device of this embodiment can also control the ambient light. Specifically, the isolation module 50 includes a third optocoupler, and the driving module 30 includes an RBG driver. The RBG driver is connected to the control chip 10 through a third photocoupler to control the color of the automotive ambient light.

As shown in FIG. 3 , the control device of this embodiment can also perform key operation. The isolation module 50 includes a second optocoupler 52 . The key panel is connected to the control chip 10 through the second photocoupler 52, so as to prevent the control chip 10 from being disturbed. Referring to FIG. 9 , the model of the second optocoupler 52 is TLP281, which includes multiple optocouplers and can be connected to multiple buttons.

As shown in FIG. 3 , the control device of this embodiment can also perform display, maintenance or debugging. The control device also includes a 232 interface, a 232 transceiver and a digital isolator. The 232 interface is connected to the input end of the 232 transceiver, and the output end of the 232 transceiver is connected to the control chip 10 through the digital isolator. Referring to Figure 10, the model of the digital isolator is ADUM1201, which is connected to its input and output terminals through electromagnetic signals, and the model of the 232 transceiver is SP3232, which can access communication signals in 232 format.

As shown in FIG. 4-10 , in this embodiment, the model of the control chip 10 is STC8A8K64, which is a civilian-grade chip.

Furthermore, the terms "first", "second" and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second", "third" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

The above embodiments mainly describe the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention.

Claims (10)

1. A vehicle intelligent control device based on a universal chip comprises a control chip (10), a power module (20), a driving module (30) and an acquisition unit (40), and is characterized in that the power module (20) comprises a first conversion unit (21), and the first conversion unit (21) is an isolated conversion circuit and is connected with the control chip (10) in a power supply manner; the control device also comprises an isolation module (50) which is intervened between input and output by a non-electric signal, and the control chip (10) is connected to the driving module (30) through the isolation module (50) to control the driving of the controlled device; the acquisition unit (40) acquires the electric parameters of the controlled equipment through the isolation module (50).

2. The vehicle intelligent control device based on the universal chip as claimed in claim 1, wherein the driving module (30) comprises a motor driving unit (31), the isolation module (50) comprises a first photocoupler (51), and the control chip (10) is connected with the motor driving unit (31) through the photocoupler.

3. A universal chip based vehicle intelligent control device according to claim 2, characterized in that the power module (20) is provided with a second EMC filter (24) and draws driving power from the vehicle battery through the input of the second EMC filter (24).

4. The vehicle intelligent control device based on the general chip as claimed in claim 3, wherein the acquisition unit (40) comprises a current sensor (41), the isolation module (50) comprises a Hall isolation circuit arranged at an input end of the current sensor (41), an input end of the current sensor (41) is used for obtaining driving power from an output end of the second EMC filter (24), and an output end of the current sensor (41) is connected to the control chip (10).

5. The vehicle intelligent control device based on the general chip as claimed in claim 1, wherein the driving module (30) comprises an IGBT driver (32), the isolation module (50) comprises an optical coupling circuit (53) disposed at an input end of the IGBT driver (32), and the input end of the IGBT driver (32) is directly connected to the control chip (10).

6. A universal chip based intelligent control device for vehicle according to claim 1, wherein said power module (20) further comprises a second transforming unit (22), said second transforming unit (22) is provided with a first EMC filter (23) and obtains power supply from the key start power of the vehicle through the first EMC filter (23), said second transforming unit (22) is power-connected to the isolating module (50) and to the first transforming unit (21).

7. The intelligent control device for the vehicle based on the universal chip as claimed in claim 1, wherein the control device further comprises a 232 interface, a 232 transceiver and a digital isolator, the 232 interface is connected to an input end of the 232 transceiver, and an output end of the 232 transceiver is connected to the control chip (10) through the digital isolator in a transmission mode.

8. The intelligent control device for the vehicle based on the universal chip as claimed in claim 1, further comprising a key switch, wherein the isolation module (50) comprises a second photocoupler (52), and the key switch is connected to the control chip (10) through the second photocoupler (52).

9. The intelligent control device for the vehicle based on the general chip as claimed in claim 1, wherein the control chip (10) is a civil grade chip, and the control device is used for controlling a vehicle seat.

10. The utility model provides a vehicle intelligence control method based on general chip, is applied to the controlling means who contains control chip (10), drive module (30), acquisition unit (40), power module (20), characterized in that, this method includes:

the power supply module (20) supplies power to the control chip (10) through an isolated conversion circuit;

the control chip (10) is isolated and coupled with the driving module (30) to control the driving of the controlled device to operate;

the control chip (10) is isolated and coupled with the acquisition unit (40) to control the controlled device to be driven to operate.

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