CN104044525A - Circuit and control method of vehicle-mounted intelligent information system - Google Patents
Circuit and control method of vehicle-mounted intelligent information system Download PDFInfo
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- CN104044525A CN104044525A CN201310080051.5A CN201310080051A CN104044525A CN 104044525 A CN104044525 A CN 104044525A CN 201310080051 A CN201310080051 A CN 201310080051A CN 104044525 A CN104044525 A CN 104044525A
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Abstract
The invention provides a circuit of a vehicle-mounted intelligent information system. The circuit is provided with a voltage regulation circuit and a plurality of functional unit adaptive areas; one end of the voltage regulation circuit is connected with a vehicle-mounted power supply, the other end of the voltage regulation circuit is connected with the functional unit adaptive areas, and the voltage regulation circuit is used for regulating the voltage of the vehicle-mounted power supply and outputting a plurality of voltages to the corresponding functional unit adaptive areas; the functional unit adaptive area is used for setting a functional unit of the vehicle-mounted intelligent information system, each functional unit adaptive area is provided with a corresponding adaptive voltage according to the power input requirement of the functional unit, and the voltage outputted by the voltage regulation circuit to the corresponding functional unit adaptive area is adjusted according to the adaptive voltage. The invention also provides a control method of the vehicle-mounted intelligent information system. According to the circuit, the functional units which are identical in input power are distributed in the same functional unit adaptive area, so that the power supply of the entire vehicle-mounted intelligent information system is convenient to design and manage.
Description
Technical field
The present invention relates to automotive field, relate in particular to a kind of circuit and control method of vehicle intelligent information system.
Background technology
Along with the raising of people's living standard and the develop rapidly of communicating by letter, people have not just met to automobile the requirement of simply riding instead of walk, but need to the in the situation that of safety, can share the content such as some good services in mutual, the remote monitor and control of some Infotainments, information of vehicles and diagnosis, 4S shop.Therefore, under such background, produced Telematics(vehicle intelligent information system) demand of business.Vehicle intelligent information system is the complex of the communication technology and information techenology, with wireless speech or utilize advanced 3G(3rd-generation, 3G (Third Generation) Moblie technology) above network delivery is at line image or voice, and provide at any time user in driving and drive and the required various information of living; Taking gps system as basis, by GPS(Global Positioning System, global positioning system) position fixing system and wireless communication networks, to chaufeur, passenger, TSP(Telematics Service Provider, automotive remote service provider) backstage or Vehicle mounted station provide the Internet services such as traffic information, reply emergency situation, remote vehicle diagnostics and financial transaction, news, E-MAIL, online amusement.
At present, the each disunity of the hardware system that each producer carries and software system, vehicle power has a lot of unsettled latencies, and vehicle intelligent information system has special requirement to power unit.The present inventor studies discovery, for vehicle intelligent information system and concrete functional unit, does not have corresponding power management scheme.Therefore, need a kind of power management policy of vehicle intelligent information system badly.
Summary of the invention
For vehicle intelligent information system in background technology and concrete functional unit, do not have the technical matters of respective electrical power management schemes, the invention provides a kind of management circuit of vehicle intelligent information system.
The object of the invention is to be achieved through the following technical solutions:
A circuit for vehicle intelligent information system, described circuit is provided with voltage-regulating circuit and multiple functional unit adaptive area; Wherein,
One end of described voltage-regulating circuit is connected with vehicle power, the other end is connected with described multiple functional unit adaptive areas, described voltage-regulating circuit is for adjusting the voltage of vehicle power, and exports multiple voltage to corresponding functional unit adaptive area in described multiple functional unit adaptive areas;
Described functional unit adaptive area is for arranging the functional unit of described vehicle intelligent information system, each described functional unit adaptive area disposes corresponding adapt voltages according to the power input requirements of described functional unit, and described voltage-regulating circuit exports the voltage of corresponding described functional unit adaptive area to according to described adapt voltages adjustment.
The circuit of vehicle intelligent information system provided by the invention, comprise the voltage-regulating circuit for vehicle power being carried out to voltage adjustment, and for multiple functional unit adaptive areas of place function unit, each functional unit adaptive area disposes corresponding adapt voltages, and described adapt voltages is according to the power input requirements configuration of functional unit; Be on described circuit, to there is the functional unit adaptive area corresponding with each functional unit in vehicle intelligent information system, in the time of functional unit layout, can be by functional unit layout identical or approaching power input size in same functional unit adaptive area, be convenient to like this design and the management of the whole power-supply system of vehicle intelligent information system, realize the stable operation fast of vehicle intelligent information system.
The present invention also provides a kind of control method of vehicle intelligent information system, the circuit of described vehicle intelligent information system as previously mentioned, on described multiple functional unit adaptive area, layout has car entertainment control processor, audio frequency and video image processor and Long-distance Control treater respectively, and described control method comprises that step is controlled in start and step is controlled in shutdown; Wherein,
Described start control sequence of steps comprises: connect vehicle power, after the first power supply of described voltage-regulating circuit output reaches operating voltage range, Long-distance Control treater powers on; When switch for vehicle is in ACC shelves, the second source energising of described voltage-regulating circuit output, described audio frequency and video image processor powers on; Described audio frequency and video image processor sets high the pin of the 3rd power supply energising of controlling described voltage-regulating circuit output, described the 3rd power supply energising, and described car entertainment control processor powers on; The status pin of described car entertainment control processor sets high; The main button of sound equipment panel is pressed, and described audio frequency and video image processor starts the front panel power supply that comprises backlight electric power and touch-screen power supply, and system entry of backlight lamp is opened state;
Described shutdown control sequence of steps comprises: short the pressing of the main button of described sound equipment panel, and described audio frequency and video image processor is closed front panel power supply, backlight extinguishing, system entry of backlight lamp off status; The status pin of described car entertainment control processor sets low, and described car entertainment control processor is closed ready, closes the 3rd power supply of voltage-regulating circuit output described in the power supply of described car entertainment control processor; Described audio frequency and video image processor sets low status pin, and described audio frequency and video image processor is closed ready, closes the second source of voltage-regulating circuit output described in the power supply of described audio frequency and video image processor, and system enters standby mode; Described Long-distance Control treater detects the first power supply program low voltage, and described Long-distance Control treater proceeds to deep power down mode.
Vehicle intelligent information system control method provided by the invention, can effectively ensure that vehicle intelligent information system is in the time of startup and shutdown, and each functional unit of system or the electrifying timing sequence of hardware necessarily put in place, thereby can realize the stable power-supplying of system.
Brief description of the drawings
Fig. 1 is the structural representation of the circuit of the vehicle intelligent information system that provides of the embodiment of the present invention;
Fig. 2 is the framework collocation schematic diagram of the vehicle intelligent information system that provides of the embodiment of the present invention;
Fig. 3 is the first power module circuitry schematic diagram that the embodiment of the present invention provides;
Fig. 4 is the second source modular circuit schematic diagram that the embodiment of the present invention provides;
Fig. 5 is the power protecting circuit schematic diagram that the embodiment of the present invention provides;
Fig. 6 is the decision circuit schematic diagram of functional unit part control in the vehicle intelligent information system that provides of the embodiment of the present invention;
Fig. 7 is the vehicle intelligent information system power supply status migration schematic diagram that the embodiment of the present invention provides;
Fig. 8 is the vehicle intelligent information system starting up sequential schematic diagram that the embodiment of the present invention provides;
Fig. 9 is vehicle intelligent information system when shutdown the first sequential schematic diagram that the embodiment of the present invention provides;
Figure 10 is vehicle intelligent information system when shutdown the second sequential schematic diagram that the embodiment of the present invention provides;
Figure 11 is vehicle intelligent information system when shutdown the 3rd sequential schematic diagram that the embodiment of the present invention provides;
Figure 12 is vehicle intelligent information system that the embodiment of the present invention the provides time schedule control schematic diagram while waking up.
Wherein, 1, voltage-regulating circuit; 10, car entertainment control processor; 2, multiple functional unit adaptive areas; 20, audio frequency and video image processor; 21, the first functional unit adaptive area; 22, the second functional unit adaptive area; 23, the 3rd functional unit adaptive area; 30, Long-distance Control treater; 100, the first power supply chip; 200, second source chip.
Detailed description of the invention
In order to make technical matters solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Please refer to shown in Fig. 1, a kind of circuit of vehicle intelligent information system, described circuit is provided with voltage-regulating circuit 1 and multiple functional unit adaptive area 2; Wherein,
One end of described voltage-regulating circuit 1 is connected with vehicle power, the other end is connected with described multiple functional unit adaptive areas, described voltage-regulating circuit 1 is adjusted for the voltage to vehicle power, and exports multiple voltage to corresponding functional unit adaptive area in described multiple functional unit adaptive areas 2;
Described functional unit adaptive area is for arranging the functional unit of described vehicle intelligent information system, each described functional unit adaptive area disposes corresponding adapt voltages according to the power input requirements of described functional unit, and described voltage-regulating circuit exports the voltage of corresponding described functional unit adaptive area to according to described adapt voltages adjustment.
The circuit of vehicle intelligent information system provided by the invention, comprise the voltage-regulating circuit that for `, vehicle power is carried out voltage adjustment, and for multiple functional unit adaptive areas of place function unit, each functional unit adaptive area disposes corresponding adapt voltages, and described adapt voltages is according to the power input requirements configuration of functional unit; Be on described circuit, to there is the functional unit adaptive area corresponding with each functional unit in vehicle intelligent information system, in the time of functional unit layout, can be by functional unit layout identical or approaching power input size in same functional unit adaptive area, be convenient to like this design and the management of the whole power-supply system of vehicle intelligent information system, realize the stable operation fast of vehicle intelligent information system.
Please refer to shown in Fig. 2, it is based on car entertainment control processor 10, audio frequency and video image processor 20 and Long-distance Control treater 30 that the hardware of described vehicle intelligent information system is built.Wherein, the operating system that described car entertainment control processor 10 moves is Android system, for the treatment of non real-time property car entertainment information; The operating system that described audio frequency and video image processor 20 moves is ITRON system, for the treatment of real-time audio-video signal and Figure and Image; The operating system that described Long-distance Control treater 30 moves is osCAN system, the instruction of receiving for basis is by the CAN(Controller Area Network reading, controller local area network) after message information processes and encode, send to remote terminal by wireless communication module.As concrete embodiment, it is the chip of IMX53 series that described car entertainment control processor 10 is selected model, and it is the chip of SH7269 that described audio frequency and video image processor 20 is selected model, and it is the chip of MPC5606 that described Long-distance Control treater 30 is selected model.
Meanwhile, around described car entertainment control processor 10, audio frequency and video image processor 20 and Long-distance Control treater 30, also configured some other functional unit.Particularly, comprise the DDR3(Double Data Rate being connected with described car entertainment control processor 10, Double Data Rate synchronous DRAM) video memory unit, SD(Secure Digital Memory Card, safe digital card) card unit, EMMC(Embedded MultiMediaCard, in-line memory) storage location, USB(Universal Serial BUS, USB) functional unit such as interface unit and gyroscope, the audio unit being connected with described audio frequency and video image processor 20, for example FMAM module (FM/AM) unit, COBBAIF (AUX IN) unit, microphone (MIC) unit, DVD(Digital Versatile Disc, digital versatile disc) unit, power management (PMU) unit, audio frequency power amplifier (PA) unit, fly shuttle unit, the audio-frequency function unit such as keyboard (Keyboard) unit and various controls, the video unit being connected with described audio frequency and video image processor 20, for example camera (Camera) unit, Liquid Crystal Display (LCD) unit, mobile TV (CMMB) unit, after pad crystal display (Rear LCD) unit, touch-screen (Touch) unit, the video capability unit such as player (IPod) unit and external audio frequency and video input (RSE/RVC) unit, the functional units such as controller local area network (CAN) unit, main control unit (MCU), global positioning system (GPS) unit, power controller local area network (PCAN) unit, car body controller local area network (BCAN) unit and the 3G unit that are connected with described Long-distance Control treater 30.Circuit card provided by the invention is to do the design of power-supply system and management based on aforesaid system framework; Certainly, those skilled in the art is understood that, functional unit in described vehicle intelligent information system is not limited to this, those skilled in the art is on the basis of aforementioned functional unit, can also increase and decrease accordingly as required or replace as required, to meet the demand of actual vehicle intelligent information system.
Please refer to shown in Fig. 1, as specific embodiment, described multiple functional unit adaptive areas 2 comprise: the first functional unit adaptive area 21, and its adapt voltages is 5 volts; The second functional unit adaptive area 22, its adapt voltages is 3.3 volts; The 3rd functional unit adaptive area 23, its adapt voltages is 1.8 volts.Particularly, in described vehicle intelligent information system, include multiple functional units, the operating voltage of each functional unit is not all just the same, for the ease of effectively managing the power supply of whole vehicle intelligent information system, be conducive to the smooth operation of system, the present embodiment has done detailed power management design to partial function unit.Specifically, according to identical or approaching collocation of functional unit power input, functional unit layout identical or approaching all power input sizes, in same functional unit adaptive area, is conducive to design and the management of power-supply system like this.As a kind of embodiment, described functional unit adaptive area 2 comprises the first functional unit adaptive area 21, the second functional unit adaptive area 22 and the 3rd functional unit adaptive area 23.Wherein, the adapt voltages of the first functional unit adaptive area 21 is 5 volts, on this functional unit adaptive area, layout has functional unit, specifically in layout such as usb interface unit, rearmounted LCD unit, backlight (LED) unit, port driver (BOTTON) unit, controller local area network (CAN) unit, global positioning system (GPS) unit and 3G unit at least one etc. operating voltage be the functional unit of 5 volts; The adapt voltages of the second functional unit adaptive area 22 is 3.3 volts, on this functional unit adaptive area, layout has functional unit, specifically in layout such as LCD unit, touch screen unit, EMMC storage location, SD card unit, change-over switch (SWITCH) unit, DVD unit, audio frequency panel unit and main control unit at least one etc. operating voltage be the functional unit of 3.3 volts; The adapt voltages of the 3rd functional unit adaptive area 23 is 1.8 volts, on this functional unit adaptive area, layout has functional unit, specifically in such as DDR3 video memory unit of layout and TV (TV) unit at least one etc. operating voltage be the functional unit of 1.8 volts.
On the basis of aforementioned specific functional units adaptive area and functional unit layout embodiment, those skilled in the art is understood that, the type of described functional unit adaptive area is not limited to this, can also be configured according to the real work voltage of functional unit, can also comprise other functional unit adaptive areas, for example adapt voltages is 8.3 volts, for arranging the functional unit adaptive area of FMAM module group unit; Adapt voltages is 2.6 volts, for arranging functional unit adaptive area of gyro unit etc.
As specific embodiment, in order to ensure that the power supply of each functional unit is all clean and stable, numeral wiring and the analog wire laying of each power supply cabling on circuit to be separated at different wiring layers, numeral connects up and simulates not concurrent ground connection.Particularly, the power supply cabling that exports each described functional unit adaptive area on described circuit to includes numeral wiring and analog wire laying, described numeral wiring and analog wire laying are separately at different wiring layers, and the not concurrent ground connection of each node of numeral wiring and analog wire laying, can ensure that like this power supply of each functional unit all can not be interfered mutually; The every part that is described numeral wiring and analog wire laying is all different network, and different node ground connection can ensure that the interference that every part is subject to is minimum like this.
As specific embodiment, on described circuit, the wiring width of main power source part is 10-30 mil (mil).Particularly, in described vehicle intelligent system, the cabling of main power source part is related to the smooth operation of whole vehicle intelligent information system, therefore its typesetting wiring particular importance that seems.But this industry is gone back the live width standard that neither one is unified at present, each producer is different for typesetting and the wiring width of main power source part.By analysis, by reserved the wiring of main power source part on described circuit enough width, its live width is specifically arranged to 10-30mil to the present inventor, is particularly conducive to the smooth operation of whole vehicle intelligent information system.Preferably, the present inventor is through repeatedly test and emulation, and the wiring width that draws main power source part is that 12mil is this system framework of Fig. 2 of the present invention optimal live width of arranging in pairs or groups.
As specific embodiment, on described circuit, the functional unit of high-power power consumption is near described vehicle power layout.Particularly, when described functional unit is in the layout of on corresponding functional unit adaptive area, the functional unit power consumption of high-power power consumption in described functional unit is larger, easily causes the electric current on corresponding cabling to cause greatly heating; Therefore, in order to reduce the heating on corresponding cabling, keep the heating balance on every cabling, the present embodiment is preferably arranged the functional unit of high-power power consumption as far as possible near described vehicle power, for EMI(Electro Magnetic Interference, electromagnetic interference), EMC(Electro Magnetic Compatibility, electromagnetic compatibility) etc. reserved enough redundant spaces, the functional unit cabling that can avoid so large electric current is long and produce the interference such as some EMI and EMC, ensures the rational deployment of each functional unit power supply.
As specific embodiment, described voltage-regulating circuit comprises: lc circuit, for the voltage of described vehicle power is carried out to filtering processing, choose required frequency component, filtering unwanted frequency component; Power module circuitry, for carrying out step-down processing by filtered voltage; Power protecting circuit, for the voltage after step-down is carried out after power protection processing, exports multiple voltage to corresponding functional unit adaptive area.As embodiment, the voltage of described vehicle power is 12 volts, and lc circuit is by the voltage of the 12 volts frequency selection network processing of vibrating; By vibration, the voltage after frequency selection network carries out step-down processing to described power module circuitry, obtains other various required voltages such as 5 volts, 3.3 volts, 1.8 volts; The voltage after step-down is removed noise processed by power protecting circuit, then exports in described functional unit adaptive area, so that each corresponding functional unit uses in vehicle intelligent information system.Wherein, can to select model according to step-down size be the chip of TPS54260, TPS62290, TPS76501, TPS74701 to described power module circuitry.
As specific embodiment; described power protecting circuit is for carrying out power protection processing to the voltage after step-down; to realize effective protection of power supply; it is stable that guarantee outputs to the power supply of corresponding function unit in vehicle intelligent information system; without interruption, for example the voltage after step-down is removed to noise processed etc.Particularly, described power protecting circuit, for to being input to vehicle intelligent information system corresponding function unit, 12 volts, the 2 amperes level power supplies that for example car entertainment control processor 10 is used are exported interference protection.As a kind of embodiment, the circuit of described power protecting circuit is shown in Figure 3, specifically comprises: the first power supply chip 100 that model is TPS54260, and the pin PVIN1～PVIN4 of described the first power supply chip is connected to form a node M AIN3V8; The pin VIN of the first power supply chip is connected with one end of resistance R 217, and pin VIN_LD34 is connected with one end of resistance R 215, and pin VIN_LD02 is connected with one end of resistance R 211, the other end connecting joint MAIN3V8 of resistance R 217, R215 and R211; One end ground connection after capacitor C 183-C188 parallel connection, the other end is connected to node M AIN3V8; Ground connection after one end of capacitor C 199-C213 links together, the other end of C199-C201 is connected to chip pin VIN_LD34, and the other end of C202-C204 is connected to chip pin VIN_LD02, and the other end of C205-C212 is connected to node M AIN3V8; The other end of C213 is connected to chip pin VIN.Adopt the power protecting circuit of aforementioned structure; can enter protection to the power supply of for example car entertainment control processor 10 power supply front end input stages of corresponding function unit in vehicle intelligent information system; ensure that input is stable, the noise producing without electromagnetic interference, realizes except noise processed.
As specific embodiment, reliable in order to ensure that lc circuit exports the voltage of power module circuitry to, described voltage-regulating circuit 1 also comprises overvoltage crowbar (OVP), described overvoltage crowbar, for voltage after treatment filtering is carried out to overvoltage protection, then exports described power module circuitry to; It is the chip realization of LM5060 that its concrete overvoltage crowbar can be selected model.
As specific embodiment, in order to ensure to supply with the voltage stabilization of described functional unit, described voltage-regulating circuit 1 also comprises mu balanced circuit, and described mu balanced circuit, for the voltage after power protection is carried out to voltage stabilizing, is then exported multiple voltage to corresponding functional unit adaptive area; Its concrete mu balanced circuit can adopt the custom circuit of this area or chip to realize, the chip that for example model is LTC3589.
As specific embodiment, less in order to ensure to output to power-supply ripple in vehicle intelligent information system, power supply is clean, and concrete power module circuitry is provided in the present embodiment.Particularly, described power module circuitry comprises: the first power module circuitry, for distributing 0.85～1.1 volt, 2 amperes and 1.3 volts, 1 ampere level power supply; Second source modular circuit, for distributing 1.3 volts, 0.25 ampere and 2.5 volts, 1 ampere level power supply.Described the first power module circuitry and second source modular circuit are specifically for distributing the power supply of using in vehicle intelligent information system or sub-module power supply, adopt described the first power module circuitry and second source modular circuit, can realize the modularization management of vehicle intelligent information system power supply, can remove complicated debugging and modeling from, for the module management of hardware and software platform with call.
As embodiment, the circuit of described the first power module circuitry refers to shown in Fig. 4 and Fig. 5, specifically comprises that model is the second source chip 200 of TPS74701, and the pin VDDGP_1～VDDGP_15 of described second source chip is connected to form a node VDDGP; Capacitor C 214～C220 parallel connection, the one end after parallel connection is connected with node VDDGP, other end ground connection; Capacitor C 221～C225 parallel connection, the one end after parallel connection is connected with node VDDGP, other end ground connection; Described node VDDGP connects with unit interface corresponding in vehicle intelligent information system, for example, be connected with the VBUCKCORE interface of described car entertainment control processor 10, for it provides the power supply of 0.85～1.1 volt, 2 amperes.Meanwhile, the pin VCC_1～VCC_33 of described second source chip is connected to form a node VCC_1V3; Capacitor C 226～C233 parallel connection, the one end after parallel connection is connected with node VCC_1V3, other end ground connection; Capacitor C 234～C241 parallel connection, the one end after parallel connection is connected with node VCC_1V3, other end ground connection; Described node VCC_1V3 connects with unit interface corresponding in vehicle intelligent information system, for example, be connected with the VBUCKPRO interface of described car entertainment control processor 10, for it provides the power supply of 1.3 volts, 1 ampere.
As embodiment, the circuit of described second source modular circuit is shown in Figure 5, specifically comprises that model is the power supply chip of TPS62290, and the pin VDDA_1～VDDA_4 of described power supply chip is connected to form a node VDDA_1V3; Capacitor C 242～C246 parallel connection, the one end after parallel connection is connected with node VDDA_1V3, other end ground connection; Capacitor C 262～C263 parallel connection, the one end after parallel connection is connected with node VDDA_1V3, other end ground connection, and the VDDAL1 of described power supply chip is connected with node VDDA_1V3; Described node VDDA_1V3 connects with unit interface corresponding in vehicle intelligent information system, for example, be connected with the VLDO10_1V3 interface of described car entertainment control processor 10, for it provides the power supply of 1.3 volts, 0.25 ampere.Meanwhile, capacitor C 264～C265 parallel connection, the one end after parallel connection is connected with node VDD_REG_2V5, other end ground connection, and the VDD_REG of described power supply chip is connected with node VDD_REG_2V5; Described node VDD_REG_2V5 connects with unit interface corresponding in vehicle intelligent information system, for example, be connected with the VBUCKPERI interface of car entertainment control processor 10, for it provides the power supply of 2.5 volts, 1 ampere.Certainly, those skilled in the art is understood that, described the first power module circuitry is not limited to car entertainment control processor 10 and is connected with second source modular circuit, can also with other in vehicle intelligent information system need to this power supply functional unit be connected, for example audio frequency and video image processor 20 and other functional unit.
The further power supply in order to ensure that vehicle intelligent information system is stable, the present invention has also entered control to the electrifying timing sequence of described hardware system framework, ensures that the electrifying timing sequence of all parts necessarily puts in place.The detailed process powering on is as follows:
First need to start vehicle intelligent information system and power on, be specially to connect and will ensure onboard ACC ON, described ACC ON represents on automobile that battery is in work power supply state.
Next comprises that the access part of CAN bus at least will ensure to open, ensure simultaneously chip that Long-distance Control treater 30 selects for example that part of MPC5606 in normal electricity supply, to ensure can to wake 3G module up after system hibernates.
The decision circuit that hardware controls part is detailed please refer to shown in Fig. 6, in this figure, has clearly marked and has defined each hardware interface and need to be connected which signal, and concrete logic control will carefully be stated in the time schedule control process of follow-up startup and shutdown.
In vehicle intelligent information system provided by the invention, each mode of operation will go to control through series of steps the function of next mode of operation, this will relate to the power supply status migration of whole system, and the power supply status migration step that this system is detailed is shown in Figure 7.In the drawings, each arrow be initialization state foremost, end is the power cut-off state of present event, only has the mode of operation of initiating terminal rationally just to enter into end, could start next mode of operation.Wherein, illustrating of described Fig. 7 sees the following form 1.
Table 1:
As specific embodiment, for ensure system boot and when shutdown each functional unit or the electrifying timing sequence of hardware necessarily put in place, on the circuit of vehicle intelligent information system provided by the invention, be also provided with:
Start control module, controls the electrifying timing sequence of each functional unit during for vehicle intelligent information system starting up;
Shutdown control module, for the electric sequential of going of each functional unit of vehicle intelligent information system shutdown startup control system.
Particularly, system boot starts sequential as shown in Figure 8, please refer to Fig. 6 and Fig. 7 simultaneously.Described start control module specifically comprises: battery power on-unit, and for battery power is connected, after power supply B+ reaches operating voltage range, chip MPC5606 powers on, and opens CAN bus power source in 200～400 milliseconds, and complete machine enters readiness for action; Enter Ready1 unit, for entering Ready1 state (backlight OFF state), key is got to ACC shelves, power supply BAT1 energising, or CAN/3G/GPS wake-up signal is while occurring, SH7269 sets high MAIN_POW_EN pin, power supply BAT1 energising; The upper electric unit of chip I MX53, for SYS_POW_EN pin is set high, power supply BAT2 energising, chip I MX53 powers on; IMX53_STATUS sets high unit, for chip I MX53 status pin IMX53_STATUS is set high; Entering Ready2 unit, for by AUDIO(sound equipment) the main button of panel presses, chip SH7269 starts front panel power supply, comprises LCD(Liquid Crystal Display) backlight electric power (LED) and touch-screen power supply, enter Ready2(backlight ON state).So far, complete the time schedule control of whole vehicle intelligent information system starting up and corresponding function unit.
Preamble section when system closedown part comprises three, order just can complete corresponding shutdown successively.Particularly, described shutdown control module comprises the first shutdown control module, the second shutdown control module and the 3rd shutdown control module.The sequential of described the first shutdown control module is for starting standby signal (ready-standby), backlight pass signal enabling (backlight pass-ready), and when concrete, preamble section as shown in Figure 9, please refer to Fig. 6 and Fig. 7 simultaneously.Described the first shutdown control module specifically comprises: panel main power source control unit, and during for short the pressing of AUDIO panel main power source key, chip SH7269 closes front panel power supply, and LCD is backlight to be extinguished, and enters Ready1 state (backlight OFF state); If main power source key is pressed again in 30 second time, chip SH7269 opens front panel power supply, and LCD backlight lightening enters Ready2(backlight ON state); If AUDIO panel main power source bond distance was by 7 seconds, complete machine directly enters standby mode; Chip I MX53 data storage cell, for chip I, MX53 deposits stored data in, enters dormant state; Chip SH7269 dormancy unit, for chip, SH7269 enters dormant state; Chip SH7269 wakeup unit, for main power source key is pressed, chip SH7269 wakes up, lights LCD backlight; Chip I MX53 wakeup unit, for chip I MX53 is waken up, reads stored data.
The sequential of described the second shutdown control module is for starting off signal (ready-shutdown), backlight pass signal standby (backlight pass-standby), and when concrete, preamble section as shown in Figure 10, please refer to Fig. 6 and Fig. 7 simultaneously.Described the second shutdown control module specifically comprises: standby mode control unit, reaches OFF shelves for key, AVN(audio entertainment module) can keep mode of operation 30 seconds, as detected that BAT power line voltage is too low, AVN directly enters standby mode during this time; Backlight electric power closing unit, for as normal in BAT power line voltage, and without any button operation in outside, enters Ready1(backlight OFF state), close chip I MX53 peripheral devices, close backlight electric power; Chip I MX53 power-off unit, for setting low IMX53_STATUS pin, chip I MX53 close ready after, close chip I MX53 power supply; Chip SH7269 power-off unit, for setting low 7269_SPC56_WDTOVFn pin, chip SH7269 close ready after, close chip SH7269 power supply, complete machine enters standby mode.
The sequential of described the 3rd shutdown control module is low electric weight shutdown, and when concrete, preamble section as shown in Figure 11, please refer to Fig. 6 and Fig. 7 simultaneously.Described the 3rd shutdown control module specifically comprises: BAT voltage detection unit, detects BAT voltage for chip MPC5606 by digital to analogy conversion port (AD) and drop to utmost point low voltage operating scope; Chip I MX53 dormancy unit, for setting low IMX53_STATUS pin, chip I MX53 enters park mode; Chip I MX53 power-off unit, for detection of BAT power supply, if do not recovered normal voltage operating range, closes chip I MX53 power supply; AVN power-off unit, for detection of BAT power supply, if do not recovered normal voltage operating range, closes AVN power supply; Chip MPC5606 dormancy unit, detects BAT power supply program low voltage for chip MPC5606, and chip MPC5606 proceeds to deep-sleep.So far, complete the time schedule control of vehicle intelligent information system shutdown startup and corresponding function unit.
As preferred embodiment, for the guarantee system penetration depth dormant state of not working for a long time, as control requirement while wanting need of work by system wake-up, on the circuit of vehicle intelligent information system provided by the invention, be also provided with and wake control module up, while being waken up for vehicle intelligent information system, control the electrifying timing sequence of each functional unit.Particularly, it is described that preamble section is as shown in Figure 12 while waking control module concrete up, please refer to Fig. 6 and Fig. 7 simultaneously, the described control module of waking up specifically comprises: chip MPC5606 wakeup unit, for the outside wake-up signal being sent by GPS, 3G or CAN bus, flip chip MPC5606 wakes up from park mode; The upper electric unit of chip SH7269, sets high MAIN_POW_EN pin for chip MPC5606, and chip SH7269 powers on; The upper electric unit of chip I MX53, extends out IC for chip MPC5606 and sets high SYS_POW_EN pin, and chip I MX53 powers on; Confirmation unit, complete for confirming that chip I MX53 powers on; Panel wakeup unit, presses for panel main switch, and LCD is backlight to power on, front panel power supply electrifying.So far, complete waking up and the time schedule control of corresponding function unit of whole vehicle intelligent information system.
The present invention also provides a kind of control method of vehicle intelligent information system, the circuit of described vehicle intelligent information system as previously mentioned, on described multiple functional unit adaptive area, layout has car entertainment control processor 10, audio frequency and video image processor 20 and Long-distance Control treater 30 respectively, and described control method comprises that step is controlled in start and step is controlled in shutdown; Wherein,
Described start control sequence of steps comprises: connect vehicle power, after the first power supply of described voltage-regulating circuit output reaches operating voltage range, Long-distance Control treater powers on; Key is got to ACC shelves, the second source energising of described voltage-regulating circuit output, and described audio frequency and video image processor powers on; Described audio frequency and video image processor sets high the pin of the 3rd power supply energising of controlling described voltage-regulating circuit output, described the 3rd power supply energising, and described car entertainment control processor powers on; The status pin of described car entertainment control processor sets high; The main button of sound equipment panel is pressed, and described audio frequency and video image processor starts the front panel power supply that comprises backlight electric power and touch-screen power supply, and system entry of backlight lamp is opened state; When concrete, preamble section as shown in Figure 8, please refer to shown in Fig. 6 and Fig. 7 simultaneously, particularly, vehicle power is connected, after the first power supply B+ of described voltage-regulating circuit output reaches operating voltage range, Long-distance Control treater powers on, in 200～400 milliseconds, open CAN bus power source, complete machine enters readiness for action; Entry of backlight lamp off status (Ready1 state), key is got to ACC shelves, the second source BAT1 energising of described voltage-regulating circuit output, or when CAN/3G/GPS wake-up signal occurs, described audio frequency and video image processor sets high MAIN_POW_EN pin, the second source BAT1 energising of described voltage-regulating circuit output, described audio frequency and video image processor powers on; Described audio frequency and video image processor sets high the SYS_POW_EN pin of the 3rd power supply BAT2 that controls described voltage-regulating circuit output, described the 3rd power supply BAT2 energising, and described car entertainment control processor powers on; Described car entertainment control processor sets high its status pin IMX53_STATUS; By AUDIO(sound equipment) the main button of panel presses, described audio frequency and video image processor comprises LCD(Liquid Crystal Display) the front panel power supply of backlight electric power and touch-screen power supply, system entry of backlight lamp is opened state (Ready2 state), so far, complete the time schedule control of whole vehicle intelligent information system starting up and corresponding function unit.
Described shutdown control sequence of steps comprises: short the pressing of the main button of described sound equipment panel, and described audio frequency and video image processor is closed front panel power supply, backlight extinguishing, system entry of backlight lamp off status; The status pin of described car entertainment control processor sets low, and described car entertainment control processor is closed ready, closes the 3rd power supply of voltage-regulating circuit output described in the power supply of described car entertainment control processor; Described audio frequency and video image processor sets low its status pin, and described audio frequency and video image processor is closed ready, closes the second source of voltage-regulating circuit output described in the power supply of described audio frequency and video image processor, and system enters standby mode; Described car entertainment control processor detects the first power supply program low voltage of described voltage-regulating circuit output, and described car entertainment control processor proceeds to deep power down mode; Particularly, described shutdown control step comprises that step is controlled in the first shutdown control step, the second shutdown and step is controlled in the 3rd shutdown, described the first shutdown is controlled the sequential of step for starting standby signal (ready-standby), backlight pass signal enabling (backlight pass-ready), when concrete, preamble section as shown in Figure 9, please refer to Fig. 6 and Fig. 7 simultaneously, described the first shutdown is controlled step and is specifically comprised: the main button of sound equipment panel short lower time, described sound is closed front panel power supply depending on image processor, LCD is backlight to be extinguished, entry of backlight lamp off status; If main button is pressed again in 30 second time, described sound is opened front panel power supply depending on image processor, LCD backlight lightening, and entry of backlight lamp is opened state; If sound equipment panel master is by bond distance by 7 seconds, machine system directly enters standby mode;
Described the second shutdown is controlled the sequential of step for starting off signal (ready-shutdown), backlight pass signal standby (backlight pass-standby), when concrete, preamble section as shown in Figure 10, please refer to Fig. 6 and Fig. 7 simultaneously, described the second shutdown is controlled step and is specifically comprised: key reaches OFF shelves, AVN(audio entertainment module) can keep mode of operation 30 seconds, as vehicle power BAT voltage below level detected, AVN directly enters standby mode during this time; As normal in vehicle power BAT voltage, and without any button operation in outside, entry of backlight lamp off status, closes described car entertainment control processor peripheral devices, closes backlight electric power; Described car entertainment control processor sets low its status pin IMX53_STATUS pin, and described car entertainment control processor is closed ready, closes the 3rd power supply BAT2 of voltage-regulating circuit output described in described car entertainment control processor power supply; Described sound sets low its 7269_SPC56_WDTOVFn status pin depending on image processor, described sound is closed ready depending on image processor, close described sound and look the second source BAT1 of voltage-regulating circuit output described in image processor power supply, complete machine enters standby mode;
The sequential that step is controlled in described the 3rd shutdown is low electric weight shutdown, when concrete, preamble section as shown in Figure 11, please refer to Fig. 6 and Fig. 7, described the 3rd shutdown is controlled step and is specifically comprised: described Long-distance Control treater detects vehicle power BAT voltage by digital to analogy conversion port (AD) and drops to utmost point low voltage operating scope simultaneously; Detect vehicle power BAT, if do not recovered normal voltage operating range, close described car entertainment control processor power supply and AVN power supply; Described Long-distance Control treater detects vehicle power BAT program low voltage, and described Long-distance Control treater proceeds to deep power down mode, so far, completes the time schedule control of vehicle intelligent information system shutdown startup and corresponding function unit.
Adopt vehicle intelligent information system control method provided by the invention, can effectively ensure that vehicle intelligent information system is in the time of startup and shutdown, each functional unit of system or the electrifying timing sequence of hardware necessarily put in place, thereby can realize the stable power-supplying of system.
As concrete implementation column, described control method also comprises wakes control step up, described in wake up control sequence of steps comprise: GPS, 3G, CAN bus are sent outside wake-up signal, trigger described Long-distance Control treater and wake up from park mode; Described Long-distance Control treater sets high the pin of the second source energising of controlling described voltage-regulating circuit output, described second source energising, and described audio frequency and video image processor powers on; Described Long-distance Control treater sets high the pin of the 3rd power supply energising of controlling described voltage-regulating circuit output, described the 3rd power supply energising, and described car entertainment control processor powers on; The main button of sound equipment panel is pressed, and backlight electric power powers on, front panel power supply electrifying, and system entry of backlight lamp is opened state; When concrete, preamble section as shown in Figure 12, please refer to Fig. 6 and Fig. 7 simultaneously, described in wake up and control step and specifically comprise: send outside wake-up signal by GPS, 3G or CAN bus, trigger described Long-distance Control treater and wake up from park mode; Described Long-distance Control treater sets high the pin MAIN_POW_EN of the second source BAT1 energising of controlling described voltage-regulating circuit output, and described audio frequency and video image processor powers on; Described Long-distance Control treater extends out IC the pin SYS_POW_EN of the 3rd power supply BAT2 that controls described voltage-regulating circuit output is set high, and described car entertainment control processor powers on; Described car entertainment control processor powers on complete, and panel main switch is pressed, and LCD is backlight to power on, and front panel power supply electrifying so far, completes waking up and the time schedule control of corresponding function unit of whole vehicle intelligent information system.Adopt and wake control step up in this enforcement, when the system that can ensure is not worked penetration depth dormant state for a long time, can, by system wake-up, restart work according to need of work.
As specific embodiment, it is the chip of IMX53 series that described amusement control processor 10 is selected model, and it is the chip of SH7269 that described audio frequency and video image processor 20 is selected model, and it is the chip of MPC5606 that described Long-distance Control treater 30 is selected model.In the present embodiment, selected chip is that industry is up-to-date, this collocation is also that the present inventor is through strict certification, and like product chips routine processes complexity before can overcoming, the defect high part of automobile product information real-time not being separated, has effectively ensured the stability that whole system is moved.Certainly, those of ordinary skill in the art, according to foregoing description, also can adopt other similar chips, do not give an example one by one at this.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. a circuit for vehicle intelligent information system, is characterized in that, described circuit is provided with voltage-regulating circuit and multiple functional unit adaptive area; Wherein,
One end of described voltage-regulating circuit is connected with vehicle power, the other end is connected with described multiple functional unit adaptive areas, described voltage-regulating circuit is for adjusting the voltage of vehicle power, and exports multiple voltage to corresponding functional unit adaptive area in described multiple functional unit adaptive areas;
Described functional unit adaptive area is for arranging the functional unit of described vehicle intelligent information system, each described functional unit adaptive area disposes corresponding adapt voltages according to the power input requirements of described functional unit, and described voltage-regulating circuit exports the voltage of corresponding described functional unit adaptive area to according to described adapt voltages adjustment.
2. the circuit of vehicle intelligent information system according to claim 1, is characterized in that, described voltage-regulating circuit comprises:
Lc circuit, for carrying out filtering processing by the voltage of described vehicle power;
Overvoltage crowbar, for carrying out overvoltage protection by filtered voltage;
Power module circuitry, for carrying out step-down processing by the voltage after overvoltage protection;
Power protecting circuit, for carrying out the voltage after step-down after power protection processing;
Mu balanced circuit, for the voltage after power protection is carried out to voltage stabilizing, then exports multiple voltage to corresponding functional unit adaptive area.
3. the circuit of the vehicle intelligent information system of stating according to claim 2, is characterized in that, described power module circuitry comprises:
The first power module circuitry, for distributing 0.85～1.1 volt, 2 amperes and 1.3 volts, 1 ampere level power supply;
Second source modular circuit, for distributing 1.3 volts, 0.25 ampere and 2.5 volts, 1 ampere level power supply.
4. the circuit of vehicle intelligent information system according to claim 1, is characterized in that, described multiple functional unit adaptive areas comprise: the first functional unit adaptive area, and its adapt voltages is 5 volts; The second functional unit adaptive area, its adapt voltages is 3.3 volts; The 3rd functional unit adaptive area, its adapt voltages is 1.8 volts.
5. the circuit of vehicle intelligent information system according to claim 4, is characterized in that,
On described the first functional unit adaptive area, layout has functional unit, and this functional unit comprises at least one in usb interface unit, rearmounted LCD unit, LED unit, BOTTON unit, CAN unit, GPS unit and 3G unit;
On described the second functional unit adaptive area, layout has functional unit, and this functional unit comprises at least one in LCD unit, touch screen unit, EMMC storage location, SD card unit, SWITCH unit, DVD unit and main control unit;
On described the 3rd functional unit adaptive area, layout has functional unit, and this functional unit comprises at least one in DDR3 video memory unit and TV unit.
6. the circuit of the vehicle intelligent information system of stating according to claim 1, it is characterized in that, the power-supply wiring that exports each described functional unit adaptive area on described circuit to comprises numeral wiring and analog wire laying, described numeral wiring and analog wire laying are separately at different wiring layers, and described numeral connects up and not concurrent ground connection of analog wire laying.
7. the circuit of the vehicle intelligent information system of stating according to claim 1, is characterized in that, on described circuit, the functional unit of high-power power consumption is near described vehicle power layout.
8. according to the circuit of the vehicle intelligent information system described in any one in claim 1-7, it is characterized in that, on described circuit, be also provided with:
Start control module, controls the electrifying timing sequence of each functional unit during for vehicle intelligent information system starting up;
Shutdown control module, for the electric sequential of going of each functional unit of vehicle intelligent information system shutdown startup control system.
9. according to the circuit of vehicle intelligent information system claimed in claim 8, it is characterized in that, on described circuit, be also provided with and wake control module up, while being waken up for vehicle intelligent information system, control the electrifying timing sequence of each functional unit.
10. the control method of a vehicle intelligent information system, it is characterized in that, the circuit of described vehicle intelligent information system is as shown in claim 1, on described multiple functional unit adaptive area, layout has car entertainment control processor, audio frequency and video image processor and Long-distance Control treater respectively, and described control method comprises that step is controlled in start and step is controlled in shutdown; Wherein,
Described start control sequence of steps comprises: connect vehicle power, after the first power supply of described voltage-regulating circuit output reaches operating voltage range, Long-distance Control treater powers on; When switch for vehicle is during in ACC shelves, the second source energising of described voltage-regulating circuit output, described audio frequency and video image processor powers on; Described audio frequency and video image processor sets high the pin of the 3rd power supply energising of controlling described voltage-regulating circuit output, described the 3rd power supply energising, and described car entertainment control processor powers on; The status pin of described car entertainment control processor sets high; When the main button of sound equipment panel is pressed, described audio frequency and video image processor starts the front panel power supply that comprises backlight electric power and touch-screen power supply, and described system entry of backlight lamp is opened state;
Described shutdown control sequence of steps comprises: short the pressing of the main button of described sound equipment panel, and described audio frequency and video image processor is closed front panel power supply, backlight extinguishing, described system entry of backlight lamp off status; The status pin of described car entertainment control processor sets low, and described car entertainment control processor is closed ready, closes the 3rd power supply of voltage-regulating circuit output described in the power supply of described car entertainment control processor; Described audio frequency and video image processor sets low status pin, and described audio frequency and video image processor is closed ready, closes the second source of voltage-regulating circuit output described in the power supply of described audio frequency and video image processor, and described system enters standby mode; Described Long-distance Control treater detects the first power supply program low voltage, and described Long-distance Control treater proceeds to deep power down mode.
The control method of 11. vehicle intelligent information systems according to claim 10, it is characterized in that, described control method also comprises wakes control step up, the described control sequence of steps of waking up comprises: GPS, 3G, CAN bus are sent outside wake-up signal, trigger described Long-distance Control treater and wake up from park mode; Described Long-distance Control treater sets high the pin of controlling described second source energising, described second source energising, and described sound powers on depending on image processor; Described Long-distance Control treater sets high the pin of controlling described the 3rd power supply energising, described the 3rd power supply energising, and described car entertainment control processor powers on; The main button of described sound equipment panel is pressed, and described backlight electric power powers on, described front panel power supply electrifying, and described system entry of backlight lamp is opened state.
12. according to the control method of the vehicle intelligent information system described in claim 10 or 11, it is characterized in that, it is the chip of IMX53 series that described car entertainment control processor is selected model, it is the chip of SH7269 that described audio frequency and video image processor is selected model, and it is the chip of MPC5606 that described Long-distance Control treater is selected model.
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