CN115503418A - Five-connection valve function safety circuit and method for chassis domain controller system - Google Patents

Five-connection valve function safety circuit and method for chassis domain controller system Download PDF

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Publication number
CN115503418A
CN115503418A CN202211183148.4A CN202211183148A CN115503418A CN 115503418 A CN115503418 A CN 115503418A CN 202211183148 A CN202211183148 A CN 202211183148A CN 115503418 A CN115503418 A CN 115503418A
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China
Prior art keywords
side driving
resistor
valve
driving circuit
low
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CN202211183148.4A
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CN115503418B (en
Inventor
李海波
王强
焦育成
杨莉
廖波
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FAW Group Corp
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FAW Group Corp
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Priority to CN202211183148.4A priority Critical patent/CN115503418B/en
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Priority to PCT/CN2023/089789 priority patent/WO2024066310A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/052—Pneumatic spring characteristics
    • B60G17/0523—Regulating distributors or valves for pneumatic springs
    • B60G17/0525—Height adjusting or levelling valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/30—Height or ground clearance
    • B60G2500/302—Height or ground clearance using distributor valves

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Automation & Control Theory (AREA)
  • Air Bags (AREA)

Abstract

The invention discloses a five-connection valve function safety circuit for a chassis domain controller system, which comprises a micro-processing unit, a five-connection valve high-side driving circuit and a five-connection valve low-side driving circuit, wherein the five-connection valve high-side driving circuit is respectively connected with the micro-processing unit and the five-connection valve; the five-connection valve low-side driving circuit is respectively connected with the micro-processing unit and the five-connection valve; and according to the working state of the micro-processing unit, the five-connection valve high-side driving circuit and the five-connection valve low-side driving circuit work in a matching mode, so that the five-connection valve is controlled to enter a working mode or a safety mode. This application divide into five even valve drives high limit drive and low limit drive, and high limit drive adopts the power supply of four gasbag valves of intelligent high limit driver chip simultaneous control and gas storage valve, and low limit drive adopts low limit driver chip in isolation to carry out the independent control to five valves, and the circuit is simple, the reliability is high, satisfies high function safety requirement when reduce cost.

Description

Five-connection valve function safety circuit and method for chassis domain controller system
Technical Field
The invention relates to a chassis domain control technology, in particular to a five-connection valve function safety circuit for a chassis domain controller system and a control method of the five-connection valve function safety circuit for the chassis domain controller system.
Background
The automobile chassis consists of four parts, namely a transmission system, a running system, a steering system and a braking system. The chassis is used for supporting and mounting the automobile engine and all parts and assemblies thereof to form the integral shape of the automobile, and receives the power of the engine to enable the automobile to move and ensure the normal running. The automobile chassis plays an important role in the riding comfort and the driving safety of the vehicle as an important component of the vehicle. When the height of the automobile chassis is not matched with the speed of the automobile, in order to meet the functional safety requirement, the suspension height adjustment needs to be stopped immediately, and a driver is informed of the abnormal suspension height. An alarm signal sent by the MCU is sent to the instrument through the CAN module, the alarm indicator light is used for reminding a driver of the height abnormity, and the E2E communication protection function safety is realized on a software level. In order to meet the functional safety requirement, the five-connection valve can be controlled by adopting an integrated multi-channel low-side chip with a functional safety level at present, and the five-connection valve has the advantages of high integration level and PCB area saving, but has the defect of high price.
Disclosure of Invention
The present invention is directed to a five-way valve function safety circuit for a chassis domain controller system and a control method of the five-way valve function safety circuit for the chassis domain controller system, so as to solve at least one of the above technical problems.
The invention provides the following scheme:
according to one aspect of the invention, there is provided a five-way valve function safety circuit for a chassis domain controller system, the five-way valve function safety circuit for a chassis domain controller system comprising a microprocessor unit, a five-way valve high side drive circuit, and a five-way valve low side drive circuit, wherein,
the five-connection valve high-side driving circuit is connected with the micro-processing unit and the five-connection valve;
the five-connection valve low-side driving circuit is connected with the micro-processing unit and the five-connection valve; wherein,
and according to the working state of the micro-processing unit, the five-connection valve high-side driving circuit and the five-connection valve low-side driving circuit work in a matched mode, so that the five-connection valve is controlled to enter a working mode or a safety mode.
Optionally, the five-connection valve safety circuit further comprises a power management integrated chip and a communication module,
the receiving end of the micro-processing unit is connected with the power management integrated chip and used for receiving power supply provided by the power management integrated chip, the communication end of the micro-processing unit is connected with the communication module and used for transmitting fault signals to the communication module, and the input end and the output end of the micro-processing unit are respectively connected with the five-connection valve high-side driving circuit and the five-connection valve low-side driving circuit.
Optionally, the five-connection valve low-side driving circuit comprises a left front airbag valve low-side driving circuit, a right front airbag valve low-side driving circuit, a left rear airbag valve low-side driving circuit, a right rear airbag valve low-side driving circuit and an air storage valve low-side driving circuit;
the input and output ends of the micro-processing unit comprise six input and output interface groups, and the six input and output interface groups are respectively called a first input and output interface group, a second input and output interface group, a third input and output interface group, a fourth input and output interface group, a fifth input and output interface group and a sixth input and output interface group; wherein,
the first input/output interface group is connected with a five-connection valve high-side driving circuit;
the second input/output interface group is connected with a left front air bag valve low-side driving circuit;
the third input/output interface group is connected with a lower side driving circuit of the right front air bag valve;
the fourth input/output interface group is connected with a left rear airbag valve low-side driving circuit;
the fifth input/output interface group is connected with a lower side driving circuit of the right rear airbag valve;
the sixth input/output interface group is connected with the gas storage valve low-side driving circuit.
Optionally, the five-connection valve comprises a left front airbag valve, a right front airbag valve, a left rear airbag valve, a right rear airbag valve and an air storage valve;
the output end of the left front airbag valve low-side driving circuit is connected with the left front airbag valve, wherein the left front airbag valve low-side driving circuit is used for acquiring a second high level signal output by the micro processing unit and conducting the left front airbag valve low-side driving circuit according to the second high level signal of the micro processing unit;
the output end of the right front airbag valve low-side driving circuit is connected with the right front airbag valve, wherein the right front airbag valve low-side driving circuit is used for acquiring a third high level signal output by the micro-processing unit and conducting the right front airbag valve low-side driving circuit according to the third high level signal of the micro-processing unit;
the output end of the left rear airbag valve low-side driving circuit is connected with the left rear airbag valve, wherein the left rear airbag valve low-side driving circuit is used for acquiring a fourth high level signal output by the micro-processing unit and conducting the left rear airbag valve low-side driving circuit according to the fourth high level signal of the micro-processing unit;
the output end of the right rear airbag valve low-side driving circuit is connected with the right rear airbag valve, wherein the right rear airbag valve low-side driving circuit is used for acquiring a fifth high level signal output by the micro-processing unit and conducting the right rear airbag valve low-side driving circuit according to the fifth high level signal of the micro-processing unit;
the output end of the air storage valve low-side driving circuit is connected with the air storage valve, wherein the air storage valve low-side driving circuit is used for acquiring a sixth high level signal output by the micro-processing unit and conducting the air storage valve low-side driving circuit according to the sixth high level signal of the micro-processing unit;
optionally, the five-way valve low-side driving circuit includes:
the left front air bag valve low side driving circuit comprises a left front air bag valve low side driving chip, a seventh resistor, an eighth resistor, a ninth resistor and a third capacitor,
the input end of the left front airbag valve low-side driving chip is connected with a second input/output interface group of the micro-processing unit, the diagnosis interface of the left front airbag valve low-side driving chip is connected with one input/output interface group of the micro-processing unit, the seventh resistor is connected with the output end of the left front airbag valve low-side driving chip, one end of the eighth resistor is connected with the output end of the left front airbag valve low-side driving chip, the other end of the eighth resistor is connected with the ninth resistor, one end of the ninth resistor is connected with the eighth resistor, the other end of the ninth resistor is grounded, one end of the third capacitor is connected with an ADC (analog-to-digital converter) interface of the micro-processing unit, the other end of the third capacitor is grounded, and one pin of the left front airbag valve low-side driving chip is grounded;
the right front air bag valve low side driving circuit comprises a right front air bag valve low side driving chip, a tenth resistor, an eleventh resistor, a twelfth resistor and a fourth capacitor,
the input end of the right front airbag valve low-side driving chip is connected with a third input/output interface group of the micro-processing unit, the diagnosis interface of the right front airbag valve low-side driving chip is connected with one input/output interface of the micro-processing unit, the tenth resistor is connected with the output end of the right front airbag valve low-side driving chip, one end of the eleventh resistor is connected with the output end of the right front airbag valve low-side driving chip, the other end of the eleventh resistor is connected with the twelfth resistor, one end of the twelfth resistor is connected with the eleventh resistor, the other end of the twelfth resistor is grounded, one end of the fourth capacitor is connected with one ADC interface of the micro-processing unit, the other end of the fourth capacitor is grounded, and one pin of the right front airbag valve low-side driving chip is grounded;
the left rear air bag valve low side driving circuit comprises a left rear air bag valve low side driving chip, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor and a fifth capacitor,
the input end of the left rear airbag valve low-side driving chip is connected with a fourth input/output interface group of the micro-processing unit, the diagnosis interface of the left rear airbag valve low-side driving chip is connected with one input/output interface group of the micro-processing unit, the thirteenth resistor is connected with the output end of the left rear airbag valve low-side driving chip, one end of the fourteenth resistor is connected with the output end of the left rear airbag valve low-side driving chip, the other end of the fourteenth resistor is connected with the fifteenth resistor, one end of the fifteenth resistor is connected with the fourteenth resistor, the other end of the fifteenth resistor is grounded, one end of the fifth capacitor is connected with an ADC interface of the micro-processing unit, the other end of the fifth capacitor is grounded, and one pin of the left rear airbag valve low-side driving chip is grounded;
the right rear air bag valve low-side driving circuit comprises a right rear air bag valve low-side driving chip, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor and a sixth capacitor,
the input end of the right rear airbag valve low-side driving chip is connected with a fifth input/output interface group of the micro-processing unit, the diagnosis interface of the right rear airbag valve low-side driving chip is connected with one input/output interface group of the micro-processing unit, the sixteenth resistor is connected with the output end of the right rear airbag valve low-side driving chip, one end of the seventeenth resistor is connected with the output end of the right rear airbag valve low-side driving chip, the other end of the seventeenth resistor is connected with the eighteenth resistor, one end of the eighteenth resistor is connected with the seventeenth resistor, the other end of the eighteenth resistor is grounded, one end of the sixth capacitor is connected with an ADC (analog-to-digital converter) interface of the micro-processing unit, the other end of the sixth capacitor is grounded, and one pin of the right rear airbag valve low-side driving chip is grounded;
the air storage valve low side driving circuit comprises an air storage valve low side driving chip, a nineteenth resistor, a twentieth resistor, a twenty-first resistor and a seventh capacitor,
the input end of the air storage valve low-side driving chip is connected with a sixth input/output interface group of the micro-processing unit, the diagnosis interface of the air storage valve low-side driving chip is connected with an input/output interface group of the micro-processing unit, the nineteenth resistor is connected with the output end of the air storage valve low-side driving chip, one end of the twentieth resistor is connected with the output end of the air storage valve low-side driving chip, the other end of the twentieth resistor is connected with the twenty-first resistor, one end of the twenty-first resistor is connected with the twentieth resistor, the other end of the twenty-first resistor is grounded, one end of the seventh capacitor is connected with an ADC interface of the micro-processing unit, the other end of the seventh capacitor is grounded, and one pin of the air storage valve low-side driving chip is grounded.
Optionally, the five-way valve high-side driving circuit comprises an intelligent high-side driving chip, a triode, a diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor and a second capacitor,
one end of the first resistor is connected with a base electrode of the triode, one end of the first resistor is connected with the micro-processing unit and used for carrying out current-limiting protection on a first high-level signal input by the micro-processing unit, one end of the second resistor is connected with a collector electrode of the triode, the other end of the second resistor is connected with an input end of the intelligent high-side driving chip and used for carrying out current-limiting protection on a high level signal input by the micro-processing unit, one end of the third resistor is connected with a voltage diagnosis interface of the intelligent high-side driving chip, the other end of the third resistor is connected with the first capacitor, the first capacitor is grounded, the third resistor and the first capacitor form an RC filter circuit, one end of the fourth resistor is connected with the voltage diagnosis interface of the intelligent high-side driving chip, the other end of the fourth resistor is grounded, one end of the fifth resistor is connected with an output end of the intelligent high-side driving chip, the other end of the fifth resistor is connected with a sixth resistor and used for carrying out voltage division on diagnosis on the diagnosis voltage output by the intelligent high-side driving chip, one end of the first capacitor is connected with the third resistor, the other end of the second capacitor is grounded, and used for carrying out voltage division on diagnosis by the diagnosis of the diagnosis chip;
the collector electrode of the triode is connected with one end of the second resistor, the base electrode of the triode is connected with the first resistor, the emitter electrode of the triode is grounded, and the triode is used for controlling whether the five-way valve high-side driving circuit is conducted or not according to the obtained high level signal and/or low level signal;
the anode of the diode is connected with the base of the triode, the cathode of the diode is connected with the fault output interface of the power management integrated chip, and the diode is used for pulling down the base of the triode to be low level according to the obtained low level signal.
Optionally, the five-connection valve function safety circuit further comprises a power supply anti-reverse filtering module, a power supply management integrated chip and a communication module, wherein,
the input end of the power supply anti-reflection filtering module is connected with a battery, one output end of the power supply anti-reflection filtering module is connected with the power supply management integrated chip, the other output end of the power supply anti-reflection filtering module is connected with the five-connection valve high-side driving circuit, and the power supply anti-reflection filtering module is used for improving the electromagnetic compatibility of the five-connection valve function safety circuit;
the first output end of the power management integrated chip is connected with the micro-processing unit and used for supplying power to the micro-processing unit, the second output end of the power management integrated chip is connected with the five-connection valve high-side driving circuit and used for outputting a fault signal to the five-connection valve high-side driving circuit, the third output end of the power management integrated chip is connected with the communication module and used for supplying power to the communication module, and one input end of the power management integrated chip is connected with the micro-processing unit and used for monitoring the working state of the micro-processing unit;
the output end of the communication module is connected with the instrument and used for outputting a fault signal to the instrument, the input end of the communication module is connected with the power management integrated chip and used for receiving power supply provided by the power management integrated chip, and the other end of the communication module is connected with the micro-processing unit and used for realizing communication with the micro-processing unit.
The invention also provides a control method of the five-connection valve function safety circuit for the chassis domain controller system, which comprises the following steps:
judging whether the power management integrated chip can receive a watchdog reset signal sent by a microprocessing unit, if so,
controlling a five-connection valve high-side driving circuit to supply power, conducting a five-connection valve low-side driving circuit and enabling a five-connection valve functional safety circuit to enter a working mode;
if not, the five-connection valve high-side driving circuit is controlled to be powered off, and the five-connection valve functional safety circuit enters a safety mode.
Optionally, the controlling the five-valve high-side driving circuit to supply power, the five-valve low-side driving circuit to be turned on, and the entering of the five-valve functional safety circuit into the working mode includes:
the power management integrated chip outputs high level signals to the five-connection valve high-side driving circuit and the five-connection valve low-side driving circuit, the five-connection valve high-side driving circuit outputs voltage to supply power to the five-connection valve, the five-connection valve low-side driving circuit is closed, the five-connection valve low-side driving circuit is conducted, and the five-connection valve function safety circuit enters a working mode.
Optionally, the controlling the five-connection valve high-side driving circuit to disconnect power supply, and the entering of the five-connection valve functional safety circuit into the safety mode includes:
the power management integrated chip outputs a low level signal to the five-connection valve high-side driving circuit, the base of the triode of the five-connection valve high-side driving circuit is pulled down to be at a low level, the five-connection valve high-side driving circuit is powered off, and the five-connection valve functional safety circuit enters a safety mode.
Compared with the prior art, the invention has the following advantages:
the driving of the five-link valve is divided into high-side driving and low-side driving, the high-side driving adopts an intelligent high-side driving chip to simultaneously control the power supply of the four air bag valves and the air storage valve, the working state of the micro-processing unit is monitored by a power management integrated chip which meets the functional safety requirement, and when the micro-processing unit works normally, the working states of the five-link valve high-side driving chip and the discrete low-side driving chip are controlled by the micro-processing unit; when the power supply needs to be disconnected, the high-side drive is only cut off, so that the power supply can be disconnected, the height adjustment is stopped, and the safety state is entered;
the intelligent high-side driving chip can be cut off through a fault output pin of the power management integrated chip and a common diode, and the circuit is simple and high in reliability;
the low-side driving adopts a discrete low-side driving chip to independently control the five valves, common cause failure can be avoided, and voltage recovery is carried out on the output of each low-side driving chip, so that the working state of the five-connected valves is detected, whether unexpected opening or unexpected closing exists or not is detected, the cost is reduced, and meanwhile, the high-function safety requirement is met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a circuit connection diagram of a five-way valve function safety circuit for a chassis domain controller system according to an embodiment of the present invention;
FIG. 2 is a connection diagram of the intelligent high side driver circuit for the five-way valve function safety circuit of the chassis domain controller system in accordance with one embodiment of the present invention;
FIG. 3 is a low side driver circuit connection diagram of a five-way valve function safety circuit for a chassis domain controller system in accordance with one embodiment of the present invention;
fig. 4 is a block diagram of the electronics of a five-way valve function safety circuit for a chassis domain controller system that may implement the present invention.
Wherein the reference numerals are as follows:
a battery 1; a power supply anti-reflection filtering module 2; a power management integrated chip 3; a micro-processing unit 4; a meter 5; a communication module 6; a five-way valve high-side driving circuit 7; a first resistor 711; a second resistor 712; a third resistor 713; a fourth resistor 714; a fifth resistor 715; a sixth resistor 716; a diode 72; a transistor 73; an intelligent high-side driver chip 74; a first capacitor 751; a second capacitor 752; a left front air bag valve low side drive circuit 81; a left front airbag valve low side drive chip 811; a seventh resistor 812; an eighth resistor 813; a ninth resistor 814; a third capacitor 815; a right front airbag valve low side drive circuit 82; a right front airbag valve lower side driving chip 821; a tenth resistor 822; an eleventh resistor 823; a twelfth resistor 824; a fourth capacitance 825; a left rear airbag valve low side drive circuit 83; a left rear airbag valve low side drive chip 831; a thirteenth resistor 832; a fourteenth resistance 833; a fifteenth resistor 834; a fifth capacitor 835; a right rear airbag valve low side drive circuit 84; the lower driving chip 841 of the right rear air bag valve; a sixteenth resistor 842; a seventeenth resistor 843; an eighteenth resistor 844; a sixth capacitor 845; a gas storage valve low side drive circuit 85; a gas storage valve low side driving chip 851; a nineteenth resistor 852; a twentieth resistor 853; a twenty-first resistor 854; a seventh capacitance 855; a left front air bag valve 91; a right front airbag valve 92; a left rear airbag valve 93; a right rear airbag valve 94; and a gas storage valve 95.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
FIG. 1 is a circuit connection diagram of a five-way valve function safety circuit for a chassis domain controller system according to an embodiment of the present invention;
the five-connection valve function safety circuit for a chassis domain controller system as shown in fig. 1 comprises a micro-processing unit 4, a five-connection valve high side driving circuit 7 and a five-connection valve low side driving circuit, wherein,
the five-connection valve high-side driving circuit 7 is connected with the micro-processing unit 4 and the five-connection valve;
the five-connection valve low-side driving circuit 7 is connected with the micro-processing unit 4 and the five-connection valve; wherein,
wherein,
and according to the working state of the micro-processing unit 4, the five-connection valve high-side driving circuit 7 and the five-connection valve low-side driving circuit work in a matching mode, so that the five-connection valve is controlled to enter a working mode or a safety mode.
Compared with the prior art, the invention has the following advantages:
the driving of the five-link valve is divided into high-side driving and low-side driving, the high-side driving adopts an intelligent high-side driving chip to simultaneously control the power supply of the four air bag valves and the air storage valve, the working state of the micro-processing unit is monitored by a power management integrated chip which meets the functional safety requirement, and when the micro-processing unit works normally, the working states of the five-link valve high-side driving chip and the discrete low-side driving chip are controlled by the micro-processing unit; when the power supply needs to be disconnected, the power supply can be disconnected only by cutting off the high-side drive, the height adjustment is stopped, and the safety state is entered;
the intelligent high-side driving chip can be cut off through a fault output pin of the power management integrated chip and a common diode, and the circuit is simple and high in reliability;
the low-side driving adopts the discrete low-side driving chips to independently control the five valves, common cause failure can be avoided, and voltage recovery is carried out on the output of each low-side driving chip, so that the working state of the five-connected valve is detected, whether unexpected opening or unexpected closing exists or not is detected, the cost is reduced, and meanwhile, the high-function safety requirement is met.
Furthermore, the five-connection valve safety circuit comprises a power management integrated chip 3 and a communication module 6,
the receiving end of the micro processing unit 4 is connected with the power management integrated chip 3 and used for receiving power supplied by the power management integrated chip 3, the communication end of the micro processing unit 4 is connected with the communication module 6 and used for transmitting fault signals to the communication module 6, and the input end and the output end of the micro processing unit 4 are respectively connected with the five-way valve high-side driving circuit 7 and the five-way valve low-side driving circuit.
Further, the five-valve low-side driving circuit comprises a left front air bag valve low-side driving circuit 81, a right front air bag valve low-side driving circuit 82, a left rear air bag valve low-side driving circuit 83, a right rear air bag valve low-side driving circuit 84 and an air storage valve low-side driving circuit 85;
the input and output end of the micro-processing unit 4 comprises six input and output interface groups, and the six input and output interface groups are respectively called a first input and output interface group, a second input and output interface group, a third input and output interface group, a fourth input and output interface group, a fifth input and output interface group and a sixth input and output interface group;
wherein,
the first input/output interface group is connected with a five-connection valve high-side driving circuit 7;
the second input/output interface group is connected with a left front air bag valve low-side driving circuit 81;
the third input/output interface group is connected with a right front air bag valve low-side driving circuit 82;
the fourth input/output interface group is connected with a left rear airbag valve low-side driving circuit 83;
the fifth input/output interface group is connected with a right rear airbag valve low-side driving circuit 84;
the sixth input/output interface group is connected with the gas storage valve low-side driving circuit 85.
Further, the five-connection valve comprises a left front air bag valve 91, a right front air bag valve 92, a left rear air bag valve 93, a right rear air bag valve 94 and an air storage valve 95;
the output end of the left front air bag valve low-side driving circuit 81 is connected with the left front air bag valve 91, wherein the left front air bag valve low-side driving circuit 81 is used for acquiring a second high level signal output by the micro-processing unit 4 and conducting the left front air bag valve low-side driving circuit 81 according to the second high level signal of the micro-processing unit 4;
the output end of the right front airbag valve low side driving circuit 82 is connected with the right front airbag valve 92, wherein the right front airbag valve low side driving circuit 82 is used for acquiring a third high level signal output by the micro processing unit 4 and conducting the right front airbag valve low side driving circuit 82 according to the third high level signal of the micro processing unit 4;
the output end of the left rear airbag valve low-side driving circuit 83 is connected with the left rear airbag valve 93, wherein the left rear airbag valve low-side driving circuit 83 is used for acquiring a fourth high level signal output by the micro-processing unit 4 and conducting the left rear airbag valve low-side driving circuit 83 according to the fourth high level signal of the micro-processing unit 4;
the output end of the right rear airbag valve low-side driving circuit 84 is connected with the right rear airbag valve 94, wherein the right rear airbag valve low-side driving circuit 84 is used for acquiring a fifth high level signal output by the micro-processing unit 4 and conducting the right rear airbag valve low-side driving circuit 84 according to the fifth high level signal of the micro-processing unit 4;
the output end of the air storage valve low-side driving circuit 85 is connected with the air storage valve 95, wherein the air storage valve low-side driving circuit 85 is used for acquiring a sixth high level signal output by the micro-processing unit 4 and conducting the air storage valve low-side driving circuit 85 according to the sixth high level signal of the micro-processing unit 4;
further, the five-way valve low-side driving circuit comprises:
the left front air bag valve low side driving circuit 81 comprises a left front air bag valve low side driving chip 811, a seventh resistor 812, an eighth resistor 813, a ninth resistor 814 and a third capacitor 815,
the input end of a left front air bag valve low-side driving chip 811 is connected with a second input/output interface group of the micro-processing unit 4, the left front air bag valve low-side driving chip 811 receives a high-level signal output by the output pin of the second input/output interface group of the micro-processing unit 4 through the input end, a diagnosis interface of the left front air bag valve low-side driving chip 811 is connected with the input pin of the second input/output interface group of the micro-processing unit 4, the microprocessor 4 is used for monitoring whether a left front air bag valve low-side circuit is in fault according to data obtained by the input pin of the second input/output interface group, one end of a seventh resistor 812 is connected with the output end of the left front air bag valve low-side driving chip 811, the other end of the seventh resistor 812 is connected with voltage, one end of an eighth resistor 813 is connected with the output end of the left front air bag valve low-side driving chip 811, the other end of the eighth resistor 813 is connected with a ninth resistor 814, the other end of the eighth resistor 814 is connected with a ground, one end of a third capacitor 815 and a third capacitor 811 for protecting the left front air bag valve low-side driving chip 811, and the left front air bag valve low-side driving chip 811 is used for filtering and for filtering the diagnosis of the front air bag valve, the ADC, the ground electrode of the ADC (RC) for protecting the ground connection of the front air bag valve;
right front air bag valve low side driving circuit 82 includes right front air bag valve low side driving chip 821, tenth resistor 822, eleventh resistor 823, twelfth resistor 824, and fourth capacitor 825,
the input end of a right front air bag valve low-side driving chip 821 is connected with a third input/output interface group of the micro-processing unit 4, the right front air bag valve low-side driving chip 821 receives a high-level signal output by an output pin of the micro-processing unit 4 through the input end, a diagnosis interface of the right front air bag valve low-side driving chip 821 is connected with an input pin of the third input/output interface group of the micro-processing unit 4, the microprocessor 4 is used for monitoring whether a right front air bag valve low-side circuit is in fault according to data obtained by the input pin of the third input/output interface group, one end of a tenth resistor 822 is connected with the output end of the right front air bag valve low-side driving chip 821, the other end of the tenth resistor 822 is connected with voltage, one end of an eleventh resistor 823 is connected with the output end of the right front air bag valve low-side driving chip 821, the other end of the eleventh resistor is connected with a twelfth resistor 824 for dividing the diagnosis voltage output by the right front air bag valve low-side driving chip 821, one end of the twelfth resistor 824 is connected with the twelfth resistor 824, the other end of the micro-processing unit 4, the fourth capacitor is connected with a grounding resistor 825, the fourth capacitor is used for filtering the fourth resistor 825, and the fourth resistor for filtering the front air bag valve low-side driving chip before-side filtering the fourth air bag valve, and the fourth filter circuit for filtering the fourth air bag valve, and for filtering the fourth air bag valve, the fourth low-side filtering the fourth low-side driving chip 23;
the left rear air bag valve low-side driving circuit 83 comprises a left rear air bag valve low-side driving chip 831, a thirteenth resistor 832, a fourteenth resistor 833, a fifteenth resistor 834 and a fifth capacitor 835,
wherein, the input end of the left rear airbag valve low-side driving chip 831 is connected to the fourth input/output interface group of the micro-processing unit 4, the left rear airbag valve low-side driving chip 831 receives the high level signal output by the output pin of the fourth input/output interface group of the micro-processing unit 4 through the input end, the diagnosis interface of the left rear airbag valve low-side driving chip 831 is connected to the input pin of the third input/output interface group of the micro-processing unit 4, the microprocessor 4 is used for monitoring whether the left rear airbag valve low-side circuit has a fault according to the data obtained by the input pin of the fourth input/output interface group, the thirteenth resistor 832 is connected to the output end of the left rear airbag valve low-side driving chip 831, the other end of the thirteenth resistor 832 is connected to a voltage, one end of a fourteenth resistor 833 is connected with the output end of the left rear airbag valve low-side driving chip 831, the other end of the fourteenth resistor 833 is connected with a fifteenth resistor 834 for dividing the diagnostic voltage output by the left rear airbag valve low-side driving chip 831, one end of the fifteenth resistor 834 is connected with the fourteenth resistor 833, the other end of the fifteenth resistor 834 is grounded, one end of a fifth capacitor 835 is connected with an ADC interface of the micro-processing unit 4, the other end of the fifth capacitor 835 is grounded, the fifteenth resistor 834 and the fifth capacitor 835 form an RC filter circuit for performing filter protection on the diagnostic voltage output by the left rear airbag valve low-side driving chip 831, and a SOURCE pin of the left rear airbag valve low-side driving chip 831 is grounded;
the right rear airbag valve low side driving circuit 84 includes a right rear airbag valve low side driving chip 841, a sixteenth resistor 842, a seventeenth resistor 843, an eighteenth resistor 844 and a sixth capacitor 845,
the input end of the right rear airbag valve low-side driving chip 841 is connected with a fifth input/output interface group of the micro processing unit 4, the right rear airbag valve low-side driving chip 841 receives a high level signal output by the output pin of the fifth input/output interface group of the micro processing unit 4 through the input end, the diagnostic interface of the right rear airbag valve low-side driving chip 841 is connected with the input pin of the fifth input/output interface group of the micro processing unit 4, the microprocessor 4 is used for monitoring whether a right rear airbag valve low-side circuit fails according to data acquired by the input pin of the fifth input/output interface group, the sixteenth resistor 842 is connected with the output end of the right rear airbag valve low-side driving chip 841, the other end of the sixteenth resistor 842 is connected with voltage, one end of the seventeenth resistor 843 is connected with the output end of the right rear airbag valve low-side driving chip 841, the other end of the seventeenth resistor 843 is connected with an eighteenth resistor 844 for dividing the diagnostic voltage output by the right rear airbag valve low-side driving chip 841, one end of the eighteenth resistor 844 is connected with the seventeenth resistor 843, the other end of the sixteenth resistor 844 is connected with a ground, one end of the sixth capacitor 845, the sixth capacitor 845 is connected with the right rear airbag valve low-side driving chip 845, and the right rear airbag valve actuating chip for protecting the downstream ADC chip for filtering the downstream ADC chip 841, and the downstream ADC chip for filtering the downstream of the ADC chip 845;
the air storage valve low side driving circuit 85 comprises an air storage valve low side driving chip 851, a nineteenth resistor 852, a twentieth resistor 853, a twenty-first resistor 854 and a seventh capacitor 855,
an input end of a gas storage valve low-side driving chip 851 is connected with a sixth input/output interface group of the micro-processing unit 4, the gas storage valve low-side driving chip 851 receives a high-level signal output by an output pin of the sixth input/output interface group of the micro-processing unit 4 through an input end, a diagnosis interface of the gas storage valve low-side driving chip 851 is connected with an input pin of the sixth input/output interface group of the micro-processing unit 4, the microprocessor 4 is used for monitoring whether a low-side circuit of the gas storage valve fails according to data acquired by the input pin of the sixth input/output interface group, a nineteenth resistor 852 is connected with an output end of the gas storage valve low-side driving chip 851, one end of a twentieth resistor 853 is connected with an output end of the gas storage valve low-side driving chip 851, the other end of the twentieth resistor 854 is connected with a twenty-first resistor 853, the other end of the twenty-first resistor 854 is connected with a ground, one end of a seventh capacitor 855 is connected with an ADC interface of the micro-processing unit 4, the other end of the seventh capacitor 855 is connected with a ground, a seventh capacitor 855, and a sixth resistor 855 is used for protecting a filter circuit for protecting a URRC filter output pin of the gas storage valve low-side driving chip for protecting URRC for protecting the gas storage valve.
Further, the five-way valve high-side driving circuit 7 includes an intelligent high-side driving chip 74, a transistor 73, a diode 72, a first resistor 711, a second resistor 712, a third resistor 713, a fourth resistor 714, a fifth resistor 715, a sixth resistor 716, a first capacitor 751 and a second capacitor 752,
one end of the first resistor 711 is connected to the base of the triode 73, one end of the first resistor 711 is connected to the microprocessing unit 4 and is configured to perform current-limiting protection on a first high-level signal input by the microprocessing unit 4, one end of the second resistor 712 is connected to the collector of the triode 73, the other end of the second resistor 712 is connected to the input of the intelligent high-side driver chip 74 and is configured to perform current-limiting protection on the high level signal input by the microprocessing unit 4, one end of the third resistor 713 is connected to the voltage diagnostic interface of the intelligent high-side driver chip 74, the other end of the third resistor 713 is connected to the first capacitor 751, the first capacitor 751 is grounded, the third resistor 713 and the first capacitor 751 constitute an RC filter circuit, one end of the fourth resistor 714 is connected to the voltage diagnostic interface of the intelligent high-side driver chip 74, the other end of the fourth resistor 714 is grounded, one end of the fifth resistor 715 is connected to the output of the intelligent high-side driver chip 74, the other end of the fifth resistor 716 is connected to the sixth resistor 715, the sixth resistor 715 is connected to the intelligent high-side driver chip 74, the other end of the intelligent high-side driver chip 74 is connected to the second resistor 752, the second resistor 751 is connected to the second resistor 752, the second resistor 752 is connected to the second resistor 752, the second resistor 713 is connected to the second resistor 752, the second resistor 713 is connected to the second resistor 713, the second resistor 751;
a collector of the triode 73 is connected with one end of the second resistor 712, a base of the triode 73 is connected with the first resistor 711, an emitter of the triode 73 is grounded, and the triode 73 is used for controlling whether the five-way valve high-side driving circuit 7 is conducted or not according to the obtained high-level signal and/or low-level signal;
the anode of the diode 72 is connected to the base of the transistor 73, the cathode of the diode 72 is connected to the fault output interface of the power management integrated chip 3, and the diode 72 is configured to pull down the base of the transistor 73 to a low level according to the obtained low level signal.
Further, the five-connection valve function safety circuit comprises a power supply anti-reverse filtering module 2, a power supply management integrated chip 3 and a communication module 6, wherein,
the input end of a power supply anti-reflection filtering module 2 is connected with a battery 1, one output end of the power supply anti-reflection filtering module 2 is connected with a power supply management integrated chip 3, the other output end of the power supply anti-reflection filtering module 2 is connected with a five-connection valve high-side driving circuit 7, and the power supply anti-reflection filtering module 2 is used for improving the electromagnetic compatibility of a five-connection valve function safety circuit;
a first output end of the power management integrated chip 3 is connected with the micro-processing unit 4 and used for supplying power to the micro-processing unit 4, a second output end of the power management integrated chip 3 is connected with the five-connection valve high-side driving circuit 7 and used for outputting a fault signal to the five-connection valve high-side driving circuit 7, a third output end of the power management integrated chip 3 is connected with the communication module 6 and used for supplying power to the communication module 6, and one input end of the power management integrated chip 3 is connected with the micro-processing unit 4 and used for monitoring the working state of the micro-processing unit 4;
the output end of the communication module 6 is connected with the instrument 5 and used for outputting a fault signal to the instrument 5, the input end of the communication module 6 is connected with the power management integrated chip 3 and used for receiving power supply provided by the power management integrated chip 3, and the other end of the communication module is connected with the micro-processing unit 4 and used for realizing communication with the micro-processing unit 4.
In the embodiment, after the voltage of the battery 1 passes through the power supply anti-reflection filtering module 2, power is supplied to the power supply management integrated chip 3; the power management integrated chip 3 selects a chip meeting the ASIL D safety level, a 5V power supply can be provided for the micro-processing unit 4 and the communication module 6 meeting the ASIL D safety level, meanwhile, the working state of the micro-processing unit 4 is monitored through a watchdog in a question-and-answer mode, and a fault output signal SS can disconnect the high-side power supply of the five-way valve.
It can be understood that in this embodiment, when the vehicle chassis height does not match with the speed of a motor vehicle, in order to satisfy the functional safety requirement, need stop the suspension altitude mixture control immediately, through the high limit drive circuit of 4 control disconnection quintuplet valves of microprocessor unit, namely there is not voltage output, quintuplet valves stop working, thereby stop the altitude mixture control, and inform driver that the suspension is high unusual, send alarm signal by microprocessor unit 4 and send for instrument 5 through communication module 6, remind driver height unusual through the warning pilot lamp, and can realize the fault protection communication function safety that takes place in the E2E detection communication process at the software level.
FIG. 2 is a connection diagram of an intelligent high-side driver circuit for a five-way valve function safety circuit of a chassis domain controller system according to an embodiment of the present invention;
as shown in fig. 2, the five-way valve high-side driving circuit 7 of the five-way valve function safety circuit comprises an intelligent high-side driving chip 74, a transistor 73, a diode 72, a first resistor 711, a second resistor 712, a third resistor 713, a fourth resistor 714, a fifth resistor 715, a sixth resistor 716, a first capacitor 751 and a second capacitor 752,
a first end of the first resistor 711 is connected to the base of the transistor 73, a second end of the first resistor 711 is connected to the microprocessing unit 4 and is configured to perform current-limiting protection on a first high-level signal input by the microprocessing unit 4, a first end of the second resistor 712 is connected to the collector of the transistor 73, a second end of the second resistor 712 is connected to the input end of the intelligent high-side driver chip 74 and is configured to perform current-limiting protection on a high level signal input by the microprocessing unit 4, a first end of the third resistor 713 is connected to the voltage diagnostic interface of the intelligent high-side driver chip 74, a second end of the third resistor 751 is connected to ground, the first capacitor 751 is connected to ground, the third resistor 713 and the first capacitor 751 constitute an RC filter circuit, a first end of the fourth resistor 714 is connected to the voltage diagnostic interface of the intelligent high-side driver chip 74, a second end of the fourth resistor is connected to ground, a first end of the fifth resistor 715 is connected to the output end of the intelligent high-side driver chip 74, a second end of the fifth resistor 716 is connected to the sixth resistor 716 and is connected to the second end of the sixth resistor 716 and is connected to the second resistor 715, the second resistor 752 for dividing the diagnostic voltage of the intelligent high-side driver chip 74, the second resistor 751 is connected to the second end of the second resistor 713, and is connected to the second resistor 752;
the collector of the triode 73 is connected with the second resistor 712, the base of the triode 73 is connected with the first resistor 711, the emitter of the triode 73 is grounded, and the triode 73 is used for controlling whether the five-way valve high-side driving circuit 7 is conducted or not according to the acquired high-level signal and/or low-level signal;
the anode of the diode 72 is connected to the base of the transistor 73, the cathode of the diode 72 is connected to the fault output interface of the power management integrated chip 3, and the diode 72 is configured to pull down the base of the transistor 73 to a low level according to the obtained low level signal.
The present application is further described in detail below by way of examples, and it should be understood that the examples are not to be construed as limiting the present application in any way.
In this embodiment, the five-way valve high-side driving circuit 7 and the five-way valve low-side driving circuit work in a matching manner, so that the five-way valve is controlled to enter the working mode specifically by adopting the following method:
the working state of the micro-processing unit 4 is monitored by the watchdog of the power management integrated chip 3, specifically, when the power management integrated chip 3 can receive a watchdog reset signal sent by the micro-processing unit 4, the working state of the micro-processing unit 4 is judged to be normal, the micro-processing unit 4 outputs a high level through the first input/output interface group to control the triode 73 of the intelligent high-side driving circuit to be conducted, so that the intelligent high-side driving chip 74 is conducted to output 12V voltage to provide power for the five-connection valve, and after the five-connection valve high-side driving circuit 7 is conducted, the micro-processing unit 4 controls and drives the five-connection valve low-side circuits to be conducted, so that the corresponding gas storage valve and the gas bag valve are driven to enter a working mode.
The micro-processing unit 4 can sample the voltages of the diagnosis interface IS and the output OUT pin of the intelligent high-side driver chip 74 through the ADC interface, and diagnose the faults such as open circuit, short circuit to the power supply, and short circuit to the ground. When the micro-processing unit 4 has a program running-off fault, the output signal of the first input/output interface group is invalid, and at this time, the power management integrated chip 3 can monitor the fault of the micro-processing unit 4 through a watchdog in a question-and-answer mode, specifically, if the power management integrated chip 3 cannot receive a watchdog reset signal sent by the micro-processing unit 4, the fault of the micro-processing unit 4 is determined, if the fault occurs, a fault output pin SS of the power management integrated chip 3 outputs a low level for the diode 72, and a base pin of the triode 73 is pulled down to the low level through the diode 72, so that the triode 73 is cut off, and thus, the intelligent high-side driving chip 74 cannot output 12V voltage, the five-connection valve high side is powered off, the height adjustment is stopped, and the system enters a safe state.
FIG. 3 is a low side driver circuit connection diagram of a five-way valve function safety circuit for a chassis domain controller system in accordance with one embodiment of the present invention;
in this embodiment, the low-side driving adopts a discrete low-side driving chip to individually control the five valves, so that common cause failure can be avoided, and the micro-processing unit 4 performs voltage recovery on the output of each low-side driving chip, so that the working state of the five-link valve is detected, whether unexpected opening or unexpected closing exists or not, and the high-function safety requirement is met while the cost is reduced.
Because the four air bag valves and the air storage valve of the low-side driving circuit of the five-connection valve function safety circuit adopt independent low-side driving circuits, the circuit forms are the same, and the left front air bag valve low-side driving circuit is taken as an example for description.
As shown in fig. 3, the left front air bag valve low side driving circuit of the five-connection valve function safety circuit comprises a left front air bag valve low side driving chip 811, a seventh resistor 812, an eighth resistor 813, a ninth resistor 814 and a third capacitor 815,
wherein, the input end (IN pin IN figure 3) of the left front air bag valve low side driving chip 811 is connected with the second input/output interface group of the micro processing unit 4, the second input/output interface group comprises the output pin of the second input/output interface group, the input pin of the second input/output interface group and the ADC interface pin, the left front air bag valve low side driving chip 811 receives the high level signal output by the output pin of the second input/output interface group of the micro processing unit 4 through the IN pin, the diagnosis interface (STATUS IN figure 3) of the left front air bag valve low side driving chip 811 is connected with the input pin of the second input/output interface group of the micro processing unit 4, the microprocessor 4 is used for monitoring whether the left front air bag valve low side circuit is IN fault according to the data obtained by the input pin of the second input/output interface group, the first end of the seventh resistor 812 is connected to the output end (DRAIN IN fig. 3) of the left front airbag valve low-side driving chip 811, the second end is connected to voltage, the first end of the eighth resistor 813 is connected to the output end of the left front airbag valve low-side driving chip 811, the second end is connected to the ninth resistor 814 for dividing the diagnostic voltage output by the left front airbag valve low-side driving chip 811, the first end of the ninth resistor 814 is connected to the eighth resistor 813, the second end is grounded, the first end of the third capacitor 815 is connected to the ADC interface pin of the microprocessing unit 4, the second end is grounded, the ninth resistor 814 and the third capacitor 815 form an RC filter circuit for filtering and protecting the diagnostic voltage output by the left front airbag valve low-side driving chip 811, and the SOURCE pin of the left front airbag valve low-side driving chip 811 is grounded.
Specifically, the DRAIN pin of the left front air bag valve low side driving chip 811 is connected to the low side of the left front air bag valve 91, and the SOURCE pin is grounded. When the second input/output interface group of the micro-processing unit 4 outputs a high level to the IN pin, the left front airbag valve low side driving chip 811 is controlled to be turned on. The diagnostic interface STATUS of the left front airbag valve low side driver chip 811 may be connected to one IO pin of the micro-processing unit 4 for indicating that the left front airbag valve low side driver chip 811 is malfunctioning. The voltage of the DRAIN pin of the left front air bag valve low-side driving chip 811 needs to be divided by an eighth resistor 813 and a ninth resistor 814 and filtered by a third capacitor 815, and then enters the ADC interface of the micro-processing unit 4 from the ADC _ LS _811 for sampling conversion, so as to detect whether an unexpected opening or closing fault occurs in the left front air bag valve 91.
Referring to fig. 4, the present application further provides an electronic device structure diagram capable of implementing the control method of the five-way valve function safety circuit for a chassis domain controller system of the present application.
As shown in fig. 4, the electronic apparatus includes: the system comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete mutual communication through the communication bus; the memory has stored therein a computer program which, when executed by the processor, causes the processor to perform the steps of the control method for a five-way valve function safety circuit of a chassis domain controller system.
The present application further provides a computer readable storage medium storing a computer program executable by an electronic device, which when run on the electronic device causes the electronic device to perform the steps of the control method for a five-way valve function safety circuit of a chassis domain controller system.
The communication bus mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The electronic device includes a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of the operating system. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a Memory. The operating system may be any one or more computer operating systems that implement control of the electronic device through a Process (Process), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. In the embodiment of the present invention, the electronic device may be a handheld device such as a smart phone and a tablet computer, or may also be an electronic device such as a desktop computer and a portable computer, which is not particularly limited in the embodiment of the present invention.
The execution main body of the electronic device control in the embodiment of the present invention may be the electronic device, or a functional module capable of calling a program and executing the program in the electronic device. The electronic device may obtain the firmware corresponding to the storage medium, the firmware corresponding to the storage medium is provided by a vendor, and the firmware corresponding to different storage media may be the same or different, which is not limited herein. After the electronic device acquires the firmware corresponding to the storage medium, the firmware corresponding to the storage medium may be written into the storage medium, specifically, the firmware corresponding to the storage medium is burned into the storage medium. The process of burning the firmware into the storage medium can be implemented by adopting the prior art, and is not described in the embodiment of the present invention.
The electronic device may further acquire a reset command corresponding to the storage medium, where the reset command corresponding to the storage medium is provided by a vendor, and the reset commands corresponding to different storage media may be the same or different, and are not limited herein.
At this time, the storage medium of the electronic device is a storage medium in which the corresponding firmware is written, and the electronic device may respond to the reset command corresponding to the storage medium in which the corresponding firmware is written, so that the electronic device resets the storage medium in which the corresponding firmware is written according to the reset command corresponding to the storage medium. The process of resetting the storage medium according to the reset command may be implemented in the prior art, and is not described in detail in the embodiment of the present invention.
For convenience of description, the above devices are described as being functionally divided into various units and modules. Of course, the functions of the units and modules may be implemented in one or more software and/or hardware when the present application is implemented.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For simplicity of explanation, the method embodiments are described as a series of acts or combinations, but those skilled in the art will appreciate that the embodiments are not limited by the order of acts described, as some steps may occur in other orders or concurrently with other steps in accordance with the embodiments of the invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present application may be essentially or partially implemented in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A five-connection valve function safety circuit for a chassis domain controller system, characterized by:
the five-connection valve function safety circuit comprises a micro-processing unit (4), a five-connection valve high-side driving circuit (7) and a five-connection valve low-side driving circuit, wherein,
the five-connection valve high-side driving circuit (7) is respectively connected with the micro-processing unit (4) and the five-connection valve;
the five-connection valve low-side driving circuit (7) is respectively connected with the micro-processing unit (4) and the five-connection valve; wherein,
and according to the working state of the micro-processing unit (4), the five-connection valve high-side driving circuit (7) and the five-connection valve low-side driving circuit work in a matching mode, so that the five-connection valve is controlled to enter a working mode or a safety mode.
2. The five-way valve function safety circuit for a chassis domain controller system according to claim 1, wherein said five-way valve function safety circuit further comprises a power management integrated chip (3) and a communication module (6),
the receiving end of the micro-processing unit (4) is connected with the power management integrated chip (3) and used for receiving power supplied by the power management integrated chip (3), the communication end of the micro-processing unit (4) is connected with the communication module (6) and used for transmitting fault signals to the communication module (6), and the input end and the output end of the micro-processing unit (4) are respectively connected with the five-way valve high-side driving circuit (7) and the five-way valve low-side driving circuit.
3. The five-connection valve function safety circuit for a chassis area controller system according to claim 2, wherein the five-connection valve low side driving circuit comprises a left front air bag valve low side driving circuit (81), a right front air bag valve low side driving circuit (82), a left rear air bag valve low side driving circuit (83), a right rear air bag valve low side driving circuit (84), an air storage valve low side driving circuit (85);
the input and output ends of the micro-processing unit (4) comprise six input and output interface groups, and the six input and output interface groups are respectively called a first input and output interface group, a second input and output interface group, a third input and output interface group, a fourth input and output interface group, a fifth input and output interface group and a sixth input and output interface group; wherein,
the first input/output interface group is connected with a five-connection valve high-side driving circuit (7);
the second input/output interface group is connected with a left front air bag valve low side driving circuit (81);
the third input/output interface group is connected with a right front air bag valve low-side driving circuit (82);
the fourth input/output interface group is connected with a left rear air bag valve low-side driving circuit (83);
the fifth input/output interface group is connected with a right rear air bag valve low-side driving circuit (84);
the sixth input/output interface group is connected with a gas storage valve low-side drive circuit (85).
4. The five-valve function safety circuit for a chassis domain controller system according to claim 3, wherein the five-valve function safety circuit comprises a left front air bag valve (91), a right front air bag valve (92), a left rear air bag valve (93), a right rear air bag valve (94), an air storage valve (95);
the output end of the left front air bag valve low-side driving circuit (81) is connected with the left front air bag valve (91), wherein the left front air bag valve low-side driving circuit (81) is used for acquiring a second high level signal output by the micro-processing unit (4) and conducting the left front air bag valve low-side driving circuit (81) according to the second high level signal of the micro-processing unit (4);
the output end of the right front air bag valve low-side driving circuit (82) is connected with the right front air bag valve (92), wherein the right front air bag valve low-side driving circuit (82) is used for acquiring a third high level signal output by the micro-processing unit (4) and switching on the right front air bag valve low-side driving circuit (82) according to the third high level signal of the micro-processing unit (4);
the output end of the left rear air bag valve low-side driving circuit (83) is connected with a left rear air bag valve (93), wherein the left rear air bag valve low-side driving circuit (83) is used for acquiring a fourth high level signal output by the micro-processing unit (4) and conducting the left rear air bag valve low-side driving circuit (83) according to the fourth high level signal of the micro-processing unit (4);
the output end of the right rear air bag valve low-side driving circuit (84) is connected with a right rear air bag valve (94), wherein the right rear air bag valve low-side driving circuit (84) is used for acquiring a fifth high level signal output by the micro-processing unit (4) and switching on the right rear air bag valve low-side driving circuit (84) according to the fifth high level signal of the micro-processing unit (4);
the output end of the air storage valve low-side driving circuit (85) is connected with the air storage valve (95), wherein the air storage valve low-side driving circuit (85) is used for acquiring a sixth high level signal output by the micro-processing unit (4) and conducting the air storage valve low-side driving circuit (85) according to the sixth high level signal of the micro-processing unit (4).
5. The five-valve functional safety circuit for a chassis domain controller system of claim 4, wherein the five-valve low side drive circuit comprises:
the left front air bag valve low side driving circuit (81) comprises a left front air bag valve low side driving chip (811), a seventh resistor (812), an eighth resistor (813), a ninth resistor (814) and a third capacitor (815),
the input end of the left front air bag valve low-side driving chip (811) is connected with a second input/output interface group of the micro-processing unit (4), the diagnosis interface of the left front air bag valve low-side driving chip (811) is connected with one input/output interface group of the micro-processing unit (4), the seventh resistor (812) is connected with the output end of the left front air bag valve low-side driving chip (811), one end of the eighth resistor (813) is connected with the output end of the left front air bag valve low-side driving chip (811), the other end of the eighth resistor (813) is connected with the ninth resistor (814), one end of the ninth resistor (814) is connected with the eighth resistor (813), the other end of the ninth resistor is grounded, one end of the third capacitor (815) is connected with one ADC interface of the micro-processing unit (4), the other end of the third capacitor is grounded, and one pin of the left front air bag valve low-side driving chip (811) is grounded;
the right front air bag valve low side driving circuit (82) comprises a right front air bag valve low side driving chip (821), a tenth resistor (822), an eleventh resistor (823), a twelfth resistor (824) and a fourth capacitor (825),
the input end of the right front air bag valve low-side driving chip (821) is connected with a third input/output interface group of the micro-processing unit (4), the diagnosis interface of the right front air bag valve low-side driving chip (821) is connected with one input/output interface group of the micro-processing unit (4), the tenth resistor (822) is connected with the output end of the right front air bag valve low-side driving chip (821), one end of the eleventh resistor (823) is connected with the output end of the right front air bag valve low-side driving chip (821), the other end of the eleventh resistor (823) is connected with the twelfth resistor (824), one end of the twelfth resistor (824) is connected with the eleventh resistor (823), the other end of the twelfth resistor (824) is grounded, one end of the fourth capacitor (825) is connected with one ADC interface of the micro-processing unit (4), the other end of the fourth capacitor is grounded, and one pin of the right front air bag valve low-side driving chip (821) is grounded;
the left rear air bag valve low-side driving circuit (83) comprises a left rear air bag valve low-side driving chip (831), a thirteenth resistor (832), a fourteenth resistor (833), a fifteenth resistor (834) and a fifth capacitor (835),
the input end of the left rear air bag valve low-side driving chip (831) is connected with a fourth input/output interface group of the micro-processing unit (4), the diagnosis interface of the left rear air bag valve low-side driving chip (831) is connected with one input/output interface group of the micro-processing unit (4), the thirteenth resistor (832) is connected with the output end of the left rear air bag valve low-side driving chip (831), one end of the fourteenth resistor (833) is connected with the output end of the left rear air bag valve low-side driving chip (831), the other end of the fourteenth resistor (833) is connected with the fifteenth resistor (834), one end of the fifteenth resistor (834) is connected with the fourteenth resistor (833), the other end of the fifteenth resistor (834) is grounded, one end of the fifth capacitor (835) is connected with one ADC interface of the micro-processing unit (4), the other end of the fifth capacitor is grounded, and one pin of the left rear air bag valve low-side driving chip (831) is grounded;
the right rear air bag valve low side driving circuit (84) comprises a right rear air bag valve low side driving chip (841), a sixteenth resistor (842), a seventeenth resistor (843), an eighteenth resistor (844) and a sixth capacitor (845),
the input end of the right rear airbag valve low-side driving chip (841) is connected with a fifth input/output interface group of the microprocessing unit (4), the diagnosis interface of the right rear airbag valve low-side driving chip (841) is connected with one input/output interface group of the microprocessing unit (4), the sixteenth resistor (842) is connected with the output end of the right rear airbag valve low-side driving chip (841), one end of the seventeenth resistor (843) is connected with the output end of the right rear airbag valve low-side driving chip (841), the other end of the seventeenth resistor (844) is connected with the eighteenth resistor (844), one end of the eighteenth resistor (844) is connected with the seventeenth resistor (843), the other end of the seventeenth resistor is grounded, one end of the sixth capacitor (845) is connected with one ADC interface of the microprocessing unit (4), the other end of the sixth capacitor is grounded, and one pin of the right rear airbag valve low-side driving chip (841) is grounded;
the air storage valve low-side driving circuit (85) comprises an air storage valve low-side driving chip (851), a nineteenth resistor (852), a twentieth resistor (853), a twenty-first resistor (854) and a seventh capacitor (855),
the input end of the air storage valve low-side driving chip (851) is connected with a sixth input/output interface group of the micro-processing unit (4), the diagnosis interface of the air storage valve low-side driving chip (851) is connected with one input/output interface group of the micro-processing unit (4), the nineteenth resistor (852) is connected with the output end of the air storage valve low-side driving chip (851), one end of the twentieth resistor (853) is connected with the output end of the air storage valve low-side driving chip (851), the other end of the twentieth resistor (854) is connected with the twenty first resistor (854), one end of the twenty first resistor (854) is connected with the twentieth resistor (853), the other end of the twenty first resistor is grounded, one end of the seventh capacitor (855) is connected with one ADC interface of the micro-processing unit (4), the other end of the seventh capacitor is grounded, and one pin of the air storage valve low-side driving chip (851) is grounded.
6. The five-valve functional safety circuit for chassis domain controller system according to claim 5, wherein the five-valve high side driver circuit (7) comprises an intelligent high side driver chip (74), a transistor (73), a diode (72), a first resistor (711), a second resistor (712), a third resistor (713), a fourth resistor (714), a fifth resistor (715), a sixth resistor (716), a first capacitor (751) and a second capacitor (752),
wherein, one end of the first resistor (711) is connected to the base of the triode (73), one end of the first resistor (711) is connected to the microprocessing unit (4) and is configured to perform current-limiting protection on the first high level signal input by the microprocessing unit (4), one end of the second resistor (712) is connected to the collector of the triode (73), the other end of the second resistor is connected to the input end of the intelligent high-side driver chip (74) and is configured to perform current-limiting protection on the high level signal input by the microprocessing unit (4), one end of the third resistor (713) is connected to the voltage diagnostic interface of the intelligent high-side driver chip (74), the other end of the third resistor is connected to the first capacitor (751), the first capacitor (751) is grounded, the third resistor (713) and the first capacitor (751) form an RC filter circuit, one end of the fourth resistor (714) is connected to the voltage diagnostic interface of the intelligent high-side driver chip (74), the other end of the fourth resistor (751) is grounded, one end of the fifth resistor (715) is connected to the output end of the intelligent high-side driver chip (74), the other end of the fifth resistor (713) is connected to the sixth resistor (715), the sixth resistor (716) is used for dividing the voltage diagnostic voltage of the intelligent high-side driver chip (74), one end of the intelligent high-side driver chip (74), and the intelligent high-side driver chip (751) is connected to the third resistor (713), one terminal (713), and the other terminal of the fifth resistor (715), one terminal is connected to the third resistor (751), one end of the second capacitor (752) is connected with the fifth resistor (715), and the other end of the second capacitor is grounded and used for filtering the diagnosis voltage output by the intelligent high-side chip;
the collector of the triode (73) is connected with one end of the second resistor (712), the base of the triode (73) is connected with the first resistor (711), the emitter of the triode (73) is grounded, and the triode (73) is used for controlling whether the five-way valve high-side driving circuit (7) is switched on or not according to the acquired high-level signal and/or low-level signal;
the anode of the diode (72) is connected with the base of the triode (73), the cathode of the diode (72) is connected with the fault output interface of the power management integrated chip (3), and the diode (72) is used for pulling down the base of the triode (73) to be at a low level according to the obtained low-level signal.
7. The five-connection valve function safety circuit for a chassis domain controller system according to claim 6, wherein the five-connection valve function safety circuit further comprises a power supply anti-reverse filtering module (2), a power supply management integrated chip (3) and a communication module (6), wherein,
the input end of the power supply anti-reflection filtering module (2) is connected with the battery (1), one output end of the power supply anti-reflection filtering module (2) is connected with the power supply management integrated chip (3), the other output end of the power supply anti-reflection filtering module (2) is connected with the five-connection valve high-side driving circuit (7), and the power supply anti-reflection filtering module (2) is used for improving the electromagnetic compatibility of the five-connection valve function safety circuit;
one output end of the power management integrated chip (3) is connected with the micro-processing unit (4) and used for supplying power to the micro-processing unit (4), the other output end of the power management integrated chip (3) is connected with the five-connection valve high-side driving circuit (7) and used for outputting fault signals to the five-connection valve high-side driving circuit (7), the other output end of the power management integrated chip (3) is connected with the communication module (6) and used for supplying power to the communication module (6), and one input end of the power management integrated chip (3) is connected with the micro-processing unit (4) and used for monitoring the working state of the micro-processing unit (4);
the output end of the communication module (6) is connected with the instrument (5) and used for outputting a fault signal to the instrument (5), the input end of the communication module (6) is connected with the power management integrated chip (3) and used for receiving power supply provided by the power management integrated chip (3), and the other end of the communication module is connected with the micro-processing unit (4) and used for realizing communication with the micro-processing unit (4).
8. A method of controlling a five-way valve function safety circuit for a chassis domain controller system, comprising:
judging whether the power management integrated chip (3) can receive a watchdog reset signal sent by the microprocessing unit (4), if so,
controlling a five-connection valve high-side driving circuit (7) to supply power, conducting a five-connection valve low-side driving circuit, and enabling a five-connection valve functional safety circuit to enter a working mode;
if not, the five-connection valve high-side driving circuit (7) is controlled to be powered off, and the five-connection valve functional safety circuit enters a safety mode.
9. The control method of a five-way valve function safety circuit for a chassis domain controller system according to claim 8, wherein the controlling the five-way valve high side driving circuit (7) to supply power, the five-way valve low side driving circuit to conduct, the five-way valve function safety circuit entering the operation mode comprises:
the power management integrated chip (3) outputs high level signals to the five-connection valve high-side driving circuit (7) and the five-connection valve low-side driving circuit, the five-connection valve high-side driving circuit (7) outputs voltage to supply power to the five-connection valve, the five-connection valve low-side driving circuit is closed, the five-connection valve low-side driving circuit is conducted, and the five-connection valve functional safety circuit enters a working mode.
10. The control method of a five-way valve function safety circuit for a chassis domain controller system according to claim 9, wherein said controlling the five-way valve high side drive circuit (7) to be de-energized, the five-way valve function safety circuit entering a safety mode comprises:
the power management integrated chip (3) outputs a low level signal to the five-connection valve high-side driving circuit (7), the base of the triode (73) of the five-connection valve high-side driving circuit (7) is pulled down to be a low level, the five-connection valve high-side driving circuit (7) supplies power and is disconnected, and the five-connection valve functional safety circuit enters a safety mode.
CN202211183148.4A 2022-09-27 2022-09-27 Five-connection-valve functional safety circuit and method for chassis domain controller system Active CN115503418B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024066310A1 (en) * 2022-09-27 2024-04-04 中国第一汽车股份有限公司 Five-connected-valve functional safety circuit for chassis domain controller system, and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11123920A (en) * 1997-10-23 1999-05-11 Nissan Diesel Motor Co Ltd Height adjusting device for air-suspension vehicle
CN104786772A (en) * 2015-04-16 2015-07-22 湖南工学院 Interlinked air suspension control device, system and method
CN110126576A (en) * 2019-06-20 2019-08-16 东风华神汽车有限公司 A kind of gas control system with air suspension of lift bridge system
CN113225232A (en) * 2021-05-12 2021-08-06 中国第一汽车股份有限公司 Hardware testing method and device, computer equipment and storage medium
CN114851798A (en) * 2022-05-20 2022-08-05 中国第一汽车股份有限公司 Gas storage valve drive circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009067316A (en) * 2007-09-14 2009-04-02 Mitsubishi Fuso Truck & Bus Corp Air suspension device
CN112859686A (en) * 2021-01-12 2021-05-28 中国第一汽车股份有限公司 Chassis domain controller
CN113067468B (en) * 2021-04-15 2022-09-06 常州易控汽车电子股份有限公司 Integrated reverse connection prevention and high-side switch circuit and controller
CN115503418B (en) * 2022-09-27 2024-09-06 中国第一汽车股份有限公司 Five-connection-valve functional safety circuit and method for chassis domain controller system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11123920A (en) * 1997-10-23 1999-05-11 Nissan Diesel Motor Co Ltd Height adjusting device for air-suspension vehicle
CN104786772A (en) * 2015-04-16 2015-07-22 湖南工学院 Interlinked air suspension control device, system and method
CN110126576A (en) * 2019-06-20 2019-08-16 东风华神汽车有限公司 A kind of gas control system with air suspension of lift bridge system
CN113225232A (en) * 2021-05-12 2021-08-06 中国第一汽车股份有限公司 Hardware testing method and device, computer equipment and storage medium
CN114851798A (en) * 2022-05-20 2022-08-05 中国第一汽车股份有限公司 Gas storage valve drive circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024066310A1 (en) * 2022-09-27 2024-04-04 中国第一汽车股份有限公司 Five-connected-valve functional safety circuit for chassis domain controller system, and method

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