CN210941655U - Rear vehicle body control system - Google Patents

Abstract

The utility model discloses a back automobile body control system, this system includes: the control module is respectively connected with the signal acquisition module and the driving module; the driving module includes: a rear body drive module and a trunk drive module; the control module controls the driving module to operate according to the signals collected by the signal collecting module. According to the technical scheme, the control over the rear car body and the trunk is realized through one controller, and the control cost of the rear car body is reduced.

Description

Rear vehicle body control system

Technical Field

The embodiment of the utility model provides a relate to vehicle control technical field, especially relate to a back automobile body control system.

Background

Along with the comfortable control system of automobile body is more and more abundant, the automobile body size is also bigger and bigger, for saving the pencil, reduce whole car weight, be divided into preceding automobile body control module with automobile body control module usually, back automobile body control module, several major parts of suitcase control module and door control module, wherein, back automobile body control module and suitcase control module equipartition are put near the left rear wheel casing of vehicle, back automobile body control module is responsible for controlling windscreen wiper behind the back car light, load such as refuel and the flap that charges, suitcase control module is responsible for controlling load such as suitcase lock, electric strut and suitcase.

Based on the existing vehicle body control framework, the rear vehicle body control and the trunk control of the vehicle are realized by two controller assemblies, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a back automobile body control system realizes the joint control of back automobile body and suitcase, reduces the cost of back automobile body control.

The embodiment of the utility model provides a back automobile body control system, include:

the control module is respectively connected with the signal acquisition module and the driving module;

the driving module includes: a rear body drive module and a trunk drive module;

the control module controls the driving module to operate according to the signals collected by the signal collecting module.

Further, the rear body drive module comprises at least one of the following: the automobile window cover driving device comprises a cover driving module, a rear windscreen wiper driving module, a rear windscreen window driving module and a rear automobile lamp driving module.

Further, the luggage drive module comprises at least one of: lock drive module, electric strut drive module and buzzer drive module.

Further, the signal acquisition module comprises: the device comprises a switch signal acquisition module and an analog signal acquisition module, wherein the switch signal acquisition module is used for acquiring digital signals, and the analog signal acquisition module is used for acquiring analog signals.

Further, the analog signal acquisition module includes: the sensor comprises a sensor signal acquisition module and an analog-to-digital conversion module;

the sensor signal acquisition module is used for acquiring Hall sensor signals, and the analog-to-digital conversion module is used for acquiring anti-pinch strip signals.

Further, the method also comprises the following steps:

the power module is respectively connected with the driving module, the control module and the signal acquisition module, and the power module is used for supplying power to the driving module, the control module and the signal acquisition module.

Further, the power module includes:

the field effect transistor and the direct current voltage conversion module;

the first end of the field effect transistor is connected with an external storage battery, the second end of the field effect transistor is connected with the direct-current voltage conversion module, and the direct-current voltage conversion module is connected with the driving module.

Further, the method also comprises the following steps:

the second end of the field effect tube is connected with the system basic chip, and the system basic chip is respectively connected with the control module and the signal acquisition module and is used for transmitting a Controller Area Network (CAN) signal and a Local Interconnect Network (LIN) signal.

The embodiment of the utility model provides a back automobile body control system, this system includes: the control module is respectively connected with the signal acquisition module and the driving module; the driving module includes: a rear body drive module and a trunk drive module; the control module controls the driving module to operate according to the signals collected by the signal collecting module. Through the technical scheme, the combined control of the rear vehicle body and the trunk is realized, and the control cost of the rear vehicle body is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a rear vehicle body control system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another rear vehicle body control system provided in the embodiment of the present invention;

fig. 3 is an implementation schematic diagram of a rear vehicle body control system in an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 1 is a schematic structural diagram of a rear vehicle body control system provided by an embodiment of the present invention. The present embodiment is applicable to a case where the rear body and trunk load of the vehicle are jointly controlled. Specifically, as shown in fig. 1, the system includes: the device comprises a signal acquisition module 100, a control module 200 and a driving module 300, wherein the control module 200 is respectively connected with the signal acquisition module 100 and the driving module 300; the driving module 300 includes a trunk driving module 310 and a rear body driving module 320; the control module 200 controls the driving module 300 to operate according to the signal collected by the signal collecting module 100.

Specifically, the control module 200 is a controller formed by integrating a rear body control Unit and a trunk control Unit in the vehicle, and may use a Micro Controller Unit (MCU) of the vehicle, for example, S32k 142. The signal acquisition module 100 is used for acquiring switching signals and analog signals of a rear vehicle body and a trunk of the vehicle, and the control module 200 controls the driving module 300 to operate according to the acquired signals, so as to jointly control the loads of the rear vehicle body and the trunk. For example, on the one hand, the control module 200 controls the rear body driving module 320 to control loads such as rear lamps, rear wipers, rear windshield heating relays, refueling and charging covers, and the like; on the other hand, the control module 200 controls the trunk driving module 310 to control the trunk lock, the electric strut, and the trunk lamp.

The rear vehicle body control system integrates a rear vehicle body control unit and a trunk control unit in a vehicle to form a new control module, realizes the combined control of relative loads of a rear vehicle body and a trunk, and reduces the control cost of the rear vehicle body.

Fig. 2 is a schematic structural diagram of another rear vehicle body control system provided in the embodiment of the present invention. As shown in fig. 2, on the basis of the above embodiment, the rear body driving module 320 includes at least one of the following: a flap driving module 321, a rear wiper driving module 322, a rear windshield driving module 323, and a rear lamp driving module 324.

On the basis of the above embodiment, the luggage driving module includes at least one of: a lock driving module 311, an electric strut driving module 312, and a buzzer driving module 313.

Further, the signal acquisition module 100 includes: the switch signal acquisition module 100 and the analog signal acquisition module 120, the switch signal acquisition module 110 is used for acquiring digital signals, and the analog signal acquisition module 120 is used for acquiring analog signals.

Optionally, the switching signal acquisition module 110 includes a first control chip and a first protection capacitor; the first control chip is connected with the switching value hardware of the vehicle body through the first protective capacitor and is used for collecting switching signals or digital signals in the vehicle. The first control chip, such as the smart chip MC33978, has 22 switch acquisition entries, wherein 8 active acquisition of high-low are available, 14 active low are available, can directly perform switch wake-up, the front end uses a first protection capacitor for electrostatic Discharge protection, and the first protection capacitor is an ESD (Electro-Static Discharge) capacitor.

Optionally, the analog signal acquisition module 120 includes a second control chip and a second protection capacitor; the second control chip is connected with analog quantity hardware of the vehicle body through a second protective capacitor and used for collecting analog signals in the vehicle. The second control chip adopts discrete components and parts to realize analog signal acquisition, and is mainly used for acquiring signals of the Hall sensor and anti-pinch strip signals. The front end of the second control chip uses a second protection capacitor to perform electrostatic discharge protection, and the second protection capacitor is an ESD capacitor.

Further, the analog signal collecting module 120 includes: the sensor comprises a sensor signal acquisition module and an analog-to-digital conversion module, wherein the sensor signal acquisition module is used for acquiring Hall sensor signals, and the analog-to-digital conversion module is used for acquiring anti-pinch strip signals. For example, in the present embodiment, an Analog-to-Digital Converter (ADC) in the MCU of the control module 200 is used as the Analog signal collecting module 120 for collecting the anti-pinch signal.

Further, the system further comprises: the power module 400, the power module 400 is connected to the driving module 300, the control module 200 and the signal acquisition module 100, respectively, and the power module 400 is configured to supply power to the driving module 300, the control module 200 and the signal acquisition module 100.

Further, the power module 400 includes: a field effect transistor 410 and a dc voltage conversion module 420; the first end of the fet 410 is connected to an external battery, the second end of the fet 410 is connected to the dc voltage conversion module 420, and the dc voltage conversion module 420 is connected to the driving module 300.

Specifically, the power module 400 supplies power to the driving module 300 and the signal acquisition module 100 by using electric energy provided by a storage battery outside the system. The fet in the power module 400 is a Metal Oxide Semiconductor (MOS) fet for reverse polarity protection, and software-controlled turn-off is connected to the positive electrode of the battery, thereby preventing reverse connection of the power supply. The DC-DC converter module (DC-DC converter) in the power module 400 is used to convert the voltage converted by the storage battery outside the system into a DC voltage of 12V, for example, and supply power to the power devices (the drivers in the driving module 300) in the system.

Further, the power module 400 further includes: the second end of the field effect transistor 410 is connected to the system base chip 430, and the system base chip 430 is respectively connected to the control module 200 and the signal acquisition module 100, and is configured to supply power to the control module 200 and the signal acquisition module 100, and transmit a CAN signal and a LIN signal to the control module 200.

Specifically, a System Base Chip (SBC), such as TLE9262, is used to supply power to the control module 200 and the signal acquisition module 100, and a CAN/LIN transceiver is integrated at the same time, so as to communicate between the System and the CAN/LIN of the vehicle.

Further, each of the driving modules 300 includes a unidirectional driving and a bidirectional driving. For example, for a unidirectional drive, such as the rear wiper drive module 322, for driving a rear wiper motor, using a half-bridge MOS chip BTN8962, the maximum drive current is 5A; for example, the lock driving module 311 is configured to drive an unlocking motor, and uses a large-current high-end output MOS chip VN5E025 with a maximum driving current of 5A; for example, the rear car light driving module 324 is used for driving left and right rear lights (position lights, brake lights, fog lights, backup lights and license plate lights) at high side by using MC40XS6500, the left and right turn lights are supplied with power by independent power supplies to prevent other lights from being influenced during flickering, VNQ7140 is used for driving, VNQ7140 can also be used for driving the running water light to enable, so that the turn lights have dynamic running water effect, the trunk lights also use VNQ7140, the maximum output current is 1A, the high-level brake lights use an intelligent high-side output chip L99MC6, dynamic brake welcome signals also use the chip for driving, and welcome by dynamic brake light effect during unlocking; for example, the buzzer driving module 313 selects an independent component building circuit to drive; such as rear louver driver module 323, and the rear louver heater relay is driven using the low side output of L99MC 6. For bidirectional driving, the DVR8702 gate driver is used to isolate strong and weak currents, and MOS chips with different powers are selected according to the driving load current, for example, for the flap driving module 321, a full bridge MOS with a maximum working current of 5A is used, and for the lock driving module 311 and the electric strut driving module 312, a full bridge MOS with a maximum working current of 30A is used.

Fig. 3 is an implementation schematic diagram of a rear vehicle body control system in an embodiment of the present invention. As shown in fig. 3, the control Module is implemented by a body control Module (BCM 2, 2.0).

For the rear lamp driving module 324, X1-1 and X1-2 are power supply pins of the left lamp and the right lamp, and drive the left combined lamp and the right combined lamp to respectively provide power supplies; x1-3 is a power supply pin of the steering lamp, and independently provides power for the left rear steering lamp and the right rear steering lamp, and the purpose of independently providing power is to prevent the steering lamp from influencing other power supplies in the working engineering; the X3-26 and the X3-27 respectively drive the rear brake lamp to light; the X3-28 drives the high-mount stop lamp to light; x3-31 and X3-32 respectively drive the left rear position lamp and the right rear position lamp to light; x3-33 drives the license plate lamp to light; x2-13 and X2-14 respectively drive the left rear fog lamp and the right rear fog lamp; x3-36 and X3-37 respectively drive left and right rear steering lamps, the steering lamps have a water flowing function, and X3-34 and X3-35 output dynamic steering enabling signals; x3-40 drives two trunk lights and one trunk interior switch backlight; x2-11 is the brake signal hard wire pickup pin, where hard wire switch pickup is redundant due to safety concerns for the brake lights.

For the flap driving module 321, X1-12 and X1-13 are pins for driving the charging flap lock, and have forward and reverse driving capability, forward locking and reverse unlocking; x1-14 and X1-15 are pins for driving the oil filler cap lock, and have forward and reverse driving capability, forward locking and reverse unlocking.

For the rear wiper drive module 322, X1-16 is the rear wiper drive pin and X3-14 is the rear wiper Park bit, which, upon receipt of this signal, indicates that the rear wiper has moved to a stop position.

For the rear window drive module 323, X2-12 is a high drive pin that drives the rear window heating relay.

For the signal acquisition module 100, X3-16 and X3-17 are hard-line acquisition pins of an internal switch and an external switch of the luggage and are used for acquiring switch signals; x2-9 is a kick controller hard line input, and can send a high level effective signal of 500ms after triggering a kick action; x3-23, X3-24 and X3-25 are interfaces of anti-pinch strip sensors of a trunk (a trunk); x1-17 and X1-18 are controller grounding pins, and are connected to the connector after the single-point grounding of the internal digital ground and the analog ground; x3-1, X3-2, X3-3 and X3-4 are Hall sensor interfaces of the left electric strut, and the movement speed of the luggage case can be judged and the anti-pinch function can be identified through signals output by the Hall sensors.

For the electric strut driving module 312, X1-5 and X1-6 are left electric strut driving pins, and the positive output and the reverse output respectively control the opening and closing of the luggage case; the right side strut control is the same as the left side.

For the lock driving module 311, X1-9 and X1-10 are driving pins of the trunk suction lock, and the positive output and the reverse output respectively control the suction lock and the locking; x1-11 is a trunk unlocking driving pin for executing an unlocking action; x3-10 and X3-11 are lock cylinder state signals, Ajar Switch is a half-lock signal and is a driving start and stop signal of the electric support rod; the ringing Switch is a full lock signal and is a pull-in module drive start and stop signal.

For the buzzer driving module 313, X3-8 and X3-9, the buzzer of the trunk is driven and is used for door closing reminding sound and trunk position memory reminding sound.

For the system base chip 430, X3-20 are LIN bus pins, X3-21, X3-22 are CAN bus pins.

The main functions of the control module in the embodiment include on-off signal acquisition, analog signal acquisition, rear vehicle exterior light control, trunk lock control, trunk electric support rod control, refueling/charging cover control, rear wiper control, rear windshield heating relay control and the like.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (8)

1. A rear body control system, comprising: the control module is respectively connected with the signal acquisition module and the driving module;

the driving module includes: a rear body drive module and a trunk drive module;

the control module controls the driving module to operate according to the signals collected by the signal collecting module.

2. The system of claim 1, wherein the rear body drive module comprises at least one of: the automobile window cover driving device comprises a cover driving module, a rear windscreen wiper driving module, a rear windscreen window driving module and a rear automobile lamp driving module.

3. The system of claim 1, wherein the luggage drive module comprises at least one of: lock drive module, electric strut drive module and buzzer drive module.

4. The system of claim 1, wherein the signal acquisition module comprises: the device comprises a switch signal acquisition module and an analog signal acquisition module, wherein the switch signal acquisition module is used for acquiring digital signals, and the analog signal acquisition module is used for acquiring analog signals.

5. The system of claim 4, wherein the analog signal acquisition module comprises: the sensor comprises a sensor signal acquisition module and an analog-to-digital conversion module;

the sensor signal acquisition module is used for acquiring Hall sensor signals, and the analog-to-digital conversion module is used for acquiring anti-pinch strip signals.

6. The system of claim 1, further comprising:

the power module is respectively connected with the driving module, the control module and the signal acquisition module, and the power module is used for supplying power to the driving module, the control module and the signal acquisition module.

7. The system of claim 6, wherein the power module comprises:

the field effect transistor and the direct current voltage conversion module;

the first end of the field effect transistor is connected with an external storage battery, the second end of the field effect transistor is connected with the direct-current voltage conversion module, and the direct-current voltage conversion module is connected with the driving module.

8. The system of claim 7, wherein the power module further comprises:

the second end of the field effect tube is connected with the system base chip, the system base chip is respectively connected with the control module and the signal acquisition module, and the system base chip is used for transmitting a controller area network CAN signal and a local interconnect network LIN signal.

Images