CN107402537A - A kind of new-energy automobile monitoring terminal system of car networking - Google Patents

A kind of new-energy automobile monitoring terminal system of car networking Download PDF

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Publication number
CN107402537A
CN107402537A CN201710689620.4A CN201710689620A CN107402537A CN 107402537 A CN107402537 A CN 107402537A CN 201710689620 A CN201710689620 A CN 201710689620A CN 107402537 A CN107402537 A CN 107402537A
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CN
China
Prior art keywords
monitor terminal
voltage
new
module
type triode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710689620.4A
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Chinese (zh)
Inventor
王文扬
龚进峰
戎辉
陈正
王旭
田涌君
陈祥威
范岩
郭蓬
何佳
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China Automotive Technology and Research Center Co Ltd
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China Automotive Technology and Research Center Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by China Automotive Technology and Research Center Co Ltd filed Critical China Automotive Technology and Research Center Co Ltd
Priority to CN201710689620.4A priority Critical patent/CN107402537A/en
Publication of CN107402537A publication Critical patent/CN107402537A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0428Safety, monitoring
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/24Pc safety
    • G05B2219/24024Safety, surveillance

Abstract

The invention provides a kind of new-energy automobile monitoring terminal system of car networking; monitor terminal includes main control chip, and the main control chip calls out emerging module, overvoltage crowbar by pin electrical connection CAN transceiver, 3G network communication module, EMMC memories, clock circuit module, power module, GPS Big Dippeves locating module, low-power consumption;The protection circuit is dragged down high level by metal-oxide-semiconductor and triode, realizes the protection to circuit.The present invention, by collection of the CAN realization to vehicle data, effectively can be monitored and be provided to new energy vehicle the position time absolute information of vehicle using monitor terminal, substantially increase vehicle safety and the efficiency of management.Cell phone application control and long-range renewal are supported, while improves portability;The present invention utilizes a metal-oxide-semiconductor and two triodes, has haveed the function that protection circuit, compared to traditional circuit, with more controllability, security and convenience.

Description

A kind of new-energy automobile monitoring terminal system of car networking
Technical field
The invention belongs to car networking technology field, more particularly, to a kind of new-energy automobile monitoring terminal system.
Background technology
With expanding economy, car ownership is continuously increased, and is brought great convenience to our life, while Very serious energy crisis and very important problem of environmental pollution are brought to us.Thus the research and development of new-energy automobile are got over More to attract attention.New-energy automobile refer to using unconventional vehicle fuel (or using conventional vehicle fuel but load novel movable Power apparatus), the automobile with new technology, new construction and advanced technology principle.Wherein pure electric automobile (BEV), hybrid power electricity Electrical automobile (HEV) and fuel cell electric vehicle (FCEV) development prospect are the best, and the master that country widelys popularize at present Want new energy vehicle.Hybrid vehicle and the development of pure electric automobile technology are more ripe, in research and development and trial production rank Section, some unavoidable technological deficiencies before vehicle prepattern, so Research on Vehicle Remote Monitoring System Based on GPRS is to improving the reliability runed and drop Low-risk, state estimation, fault diagnosis are necessary.
In order to improve present communications and transportation situation and the preferably various aspects of performance of management electric automobile, therefore T- BOX appearance is the inevitable outcome of automobile industry development.
The content of the invention
In view of this, the present invention is directed to propose a kind of new-energy automobile monitoring terminal system of car networking, to improve vehicle Security and the efficiency of management.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way:
A kind of new-energy automobile monitor terminal of car networking, including main control chip, the main control chip are electrically connected by pin Connect CAN transceiver, 3G network communication module, EMMC memories, clock circuit module, power module, GPS Big Dipper positioning moulds Block, low-power consumption wake module, overvoltage crowbar;The overvoltage crowbar is dragged down high level by metal-oxide-semiconductor and triode, Realize the protection to circuit.
Further, the CAN uses the high-speed CAN transceiver of automotive grade, complies fully with ISO11898 marks It quasi- low-power consumption mode, can be waken up by bus, reserve two-way CAN interface, baud rate can be configured according to configuration information.
Further, the overvoltage crowbar includes diode D1, voltage-stabiliser tube D2, voltage-stabiliser tube D3, PNP type triode Q2 With NPN type triode Q3, the overvoltage crowbar includes diode D1, voltage-stabiliser tube D2, voltage-stabiliser tube D3, metal-oxide-semiconductor Q1, positive-negative-positive Triode Q2 and NPN type triode Q3, diode D1 positive pole connect positive source, negative pole difference connecting resistance R15, resistance R12, PNP type triode Q2 radiation pole, voltage-stabiliser tube D2 negative pole and metal-oxide-semiconductor Q1 source electrode, resistance R20 one end connection power supply are another Termination capacitor C42, resistance R21, voltage-stabiliser tube D4, wherein electric capacity C42, this three device parallel connections of resistance R21, voltage-stabiliser tube D4, and The other end is grounded after connection, and resistance R15 connects with voltage-stabiliser tube D3, and voltage-stabiliser tube D3 positive pole meets NPN type triode Q3 base stage, NPN Type triode Q3 puts emitter grounding, and resistance R19 mono- terminates NPN type triode Q3 base stage other end ground connection, and resistance R17 mono- is terminated NPN type triode Q3 another termination PNP type triode Q2 of colelctor electrode base stage, resistance R12 mono- terminate triode Q2 radiation Extremely another termination PNP type triode Q2 base stage, voltage-stabiliser tube D2 positive pole meet PNP type triode Q2 colelctor electrode, voltage-stabiliser tube D2 Negative pole connect metal-oxide-semiconductor Q1 source electrode, resistance R13 one end ground connection, another termination voltage-stabiliser tube D2 positive pole, PNP type triode Q2 The grid of colelctor electrode and metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q1 drain electrode is output voltage.
Further, the main control chip is using the STM32F407VE or SPC5604B of Freescale.
Further, the 3G network communication module model GL865/MU509, it is remote for remote data transmission and OTA Cheng Gengxin.
Further, the GPS Big Dippeves locating module model U-blox NEO-7/8M, for providing vehicle location letter Breath.
Further, the CAN transceiver uses model TJA1042 2 tunnel CAN transceivers, meets T- BOX and in-vehicle network communications, most of requirements can be met, support CAN to wake up
Relative to prior art, the new-energy automobile monitor terminal of car networking of the present invention a kind of has following excellent Gesture:
(1) present invention utilizes monitor terminal to realize the collection to vehicle data by CAN, can be effectively to new energy Vehicle is monitored and provided the position time absolute information of vehicle, substantially increases vehicle safety and the efficiency of management.Support Cell phone application controls and long-range renewal, while improves portability;
(2) present invention is stored compared to SD card, and using EMMC big memory space, the data collected are temporarily stored in Loss of data when preventing poor signal inside EMMC;
(3) present invention utilizes a metal-oxide-semiconductor and two triodes, has haveed the function that protection circuit.Compared to traditional circuit, With more controllability and security, while there is the convenience for being changed without device.
Another object of the present invention is to propose a kind of new-energy automobile monitoring terminal system of car networking, to improve vehicle Security and the efficiency of management.
In order to achieve the above object, the technical proposal of the invention is realized in this way:
A kind of monitoring system based on above-mentioned monitor terminal, including monitor terminal, the monitor terminal are connected by CAN Connect BCM, TCU gearbox in automobile, EMC engines, EBS/ABS+ESC brakes, VDR recorders, and IC tables and door Controller, the monitor terminal also connect background server by 3G network, and the background server connects cell phone application.
Monitoring system of the present invention is identical with the beneficial effect of above-mentioned monitor terminal, will not be repeated here.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is a kind of new-energy automobile monitor terminal hardware schematic of car networking described in the embodiment of the present invention;
Fig. 2 is a kind of new-energy automobile monitor terminal functional block diagram of car networking described in the embodiment of the present invention;
Fig. 3 is that a kind of new-energy automobile monitoring terminal system low and middle-end platform of car networking described in the embodiment of the present invention is matched somebody with somebody Put and application scenarios schematic diagram;
Fig. 4 is the overvoltage crowbar schematic diagram described in the embodiment of the present invention.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase Mutually combination.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected;Can To be mechanical connection or electrical connection;Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition Concrete meaning in the present invention.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The invention provides a kind of new-energy automobile monitor terminal based on car networking, mainly include:STM32F407VE The SPC5604B of (paying the utmost attention to) or Freescale is as master chip;Model GL865/MU509 3G communication modules, are used for Remote data transmission and OTA remotely update;GPS Big Dipper locating module model U-blox NEO-7/8M, there is provided vehicle location is believed Breath;The EMMC data storage modules of Samsung, parameter and configuration information storage;File system;Data quick storage, client can be met Data record demand;The data of car-mounted terminal storage inside should have access property;Not less than common platform need it is minimum on The information data collected is stored in internal storage medium by the time interval for passing the frequency, meets the internal data of at least 7 days Storage, possesses the automatic covering function of storage inside data;Model TJA1042 2 tunnel CAN transceivers, meet T-BOX With in-vehicle network communications, most of requirements can be met, support CAN to wake up;RTC clock, when being provided for data storage, transmission Between label, car-mounted terminal should occur under abnormal conditions in vehicle and cause can be independent after the disconnection of car-mounted terminal and vehicle main power source Operation, independent operating duration can at least support the vehicle data of last 10 minutes to be uploaded to enterprise platform;And can match WIFI module and rechargeable lithium battary.In addition, general vehicle planning uses software protocol cipher mode, according to specific feelings Condition, the high vehicle of security requirement, such as following automatic Pilot vehicle, it may be considered that using hardware cipher mode, so as to protect The absolute safety of information of vehicles is demonstrate,proved.
Monitor terminal is the key component of new-energy automobile monitoring system, and monitor terminal matches somebody with somebody confidence according to host computer platform Breath is configured, and packing is encrypted according to the data in configuration information collection vehicle in CAN and by institute's gathered data in it Host computer platform is pass-through to by 3G network, host computer platform is shown after received data are decrypted, parsed to flat Platform foreground checks that the EMMC that monitor terminal is configured stores its network to be had of data under without network condition for monitoring personnel In the case of reissue to host computer platform;Function of the monitor terminal of the present invention also with long-range renewal native codes simultaneously, and It is also equipped with by remotely downloading to code in monitor terminal storage device by UDS agreements to supporting by breakpoint transmission technology The other equipment of this agreement enters the function of line program renewal.
In summary, the function that monitor terminal has approximately as:
1st, vehicle CAN data are uploaded
2nd, vehicle positional information is uploaded
3rd, position and absolute time information are provided for vehicle
4th, Internet is connected by user mobile phone
5th, remote diagnosis and remote software write with a brush dipped in Chinese ink
6th, E-CALL functions can be realized
7th, Bluetooth of mobile phone hand-free call is supported
Fig. 1 shows new-energy automobile monitor terminal hardware design block diagram of the present invention, as shown in figure 1, new-energy automobile is supervised Controlling the Hardware Design mainly includes CAN, 3G network communication module, EMMC memories, clock circuit module, power supply Module, GPS/ Big Dipper position receivers module, low-power consumption wake module, overvoltage crowbar.Main modular is designed below and carried out It is discussed in detail.
CAN:CAN uses the high-speed CAN transceiver of automotive grade, complies fully with ISO11898 standards It low-power consumption mode, can be waken up by bus, reserve two-way CAN interface, baud rate can be configured according to configuration information.
3G network communication module:Using international mainstream product, different communication modules is used according to different demands and version.
Power module:Meet that 9-36V is inputted, using the power module of isolation, solve communication, data processing and wireless transmission Power issue, it is ensured that the transmitting of data, meet automobile electromagnetic environment.
Fig. 2 shows new-energy automobile monitor terminal functional block diagram of the present invention, as shown in Fig. 2 new-energy automobile monitoring is eventually Function is held to include data acquisition, data communication, data storage, parameter setting, real-time clock, dormancy awakening, the positioning of the GPS/ Big Dippeves Etc. function, these functions are described in detail below.
Data acquisition function:Mainly pass through the diagnostic message in CAN collection CAN, travel condition of vehicle Etc. data, data are the bases of monitoring.
Data communication function:The data of collection are sent to by 2G/3G/4G modules by mobile terminal.
Data storage function:In the case of no access network, the data of CAN module collection will be stored in EMMC, Data are supplemented from EMMC in the presence of network and sent.
Parameter setting function:Configuration information is issued to by car-mounted terminal by network stored to it and carry in Flash.
Time clock feature:Car-mounted terminal provides clock in real time, and data are sent collectively to mobile terminal or storage into EMMC.
Dormancy awakening:Resting state can be entered by closing situation lower module in integral new-energy passenger key signal.
Fig. 3 shows new-energy automobile monitoring terminal system low and middle-end platform configuration and application scenarios schematic diagram of the present invention, As shown in figure 3, service background is sent data to by cell phone application, from the background can be by data remote transmission to T- by 3G network BOX service terminals, so as to extract the specific data of car internal information.Meanwhile user can be by CAN by T-BOX Data read-out is come, including BCM, TCU gearbox, EMC engines, EBS/ABS+ESC brakes, VDR recorders, and IC tables Internal data, remote access control system RKE, RRM RRM are connected to by in-car net with door controller etc., can between Control DCM door controllers are connect, are overlapped in CAN.
It is overvoltage crowbar in Fig. 4, D1 is 1N4007 diode, and D3 and D2 are the steady of 33V and 7.5V respectively Pressure pipe, Q2 are a PNP type triodes, and Q3 is a NPN type triode, and Q1 is a metal-oxide-semiconductor, and remainder is electric capacity and electricity Resistance.POWER is the feeder ear of external power source, and D1 main function is to prevent that power supply is reversed, plays artificial fault-operation protection effect. External power source is 12V under normal circumstances, now has pressure drop conducting between Q2 emitter stages and base stage, metal-oxide-semiconductor Q1 is also switched on simultaneously, defeated It is 12V to go out voltage, if external voltage is more than safe voltage 33V, voltage-stabiliser tube D3 can be turned on, and Q3 base stages and radiation pole have pressure drop to lead Logical, now external power source can be connected to ground.Electric current will not be by Q2, Q1, and output voltage is that the premise of device be not lost in 0V. Under, protect circuit.When external voltage is reduced within 33V voltages, voltage-stabiliser tube D3 is not turned on, electric current normal through Q2, D2, The devices such as Q1, normally export 12V.
The overvoltage crowbar that the present invention uses can effectively suppress caused by personnel's maloperation and external high voltage Moment shakes, while prevents from causing short circuit to power supply module and circuit excessively stream.Most important effect be prevent from burning chip it is straight Connect and cause any property loss.Traditional overvoltage protection is using hot melt insurance, when the excessive direct fuse wire of electric current, but is also had Flashy over-current phenomenon avoidance is present, and burns and must re-replace device after insurance.The circuit of the present invention is somewhat super when voltage Safe voltage is crossed, voltage-stabiliser tube D3 conductings, triode Q3 conductings, level is directly dragged down to ground terminal, in the absence of the phenomenon of excessively stream, percentage Hundred ensure that the security of circuit.Also there is certain controllability for the threshold value of safe voltage, voltage-stabiliser tube D3 voltage stabilizing value can be with Suitable magnitude of voltage is changed according to being actually needed, there is good convenience.Compared to traditional circuit, with more controllability and safety Property, while also have the convenience for being changed without device.
The present invention is to use SD card compared to conventional storage mode, and not only memory space is small but also because SD card volume is larger Cause the too fat to move of whole module.EMMC big memory space and petite volume perfection solve this problem, by what is collected Data are temporarily stored in inside EMMC loss of data when preventing poor signal, the inside of uploading onto the server afterwards.
User sends specific function command by being provided with the platform (cell phone application, computer, IPAD) of software terminal, should Instruction by wireless network upload onto the server on be authenticated, certification is by the way that after out of question, return user authentication passes through knot Fruit.It will be worked as indicated when monitor terminal receives instruction.For example, user thinks remotely to open the door to car, can be in mobile phone The instruction of an enabling is sent on APP, the server that the instruction uploads immediately is verified, if meeting that door-opening condition checking is logical Cross and give user feedback one successful information of opening the door.So remote operation this simple action of opening the door is achieved that.Other are remote The function of journey operation such as switchs that air-conditioning, window opening-closing are similar to be repeated no more.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.

Claims (8)

  1. A kind of 1. new-energy automobile monitor terminal of car networking, it is characterised in that:Including main control chip, the main control chip passes through Pin electrical connection CAN transceiver, 3G network communication module, EMMC memories, clock circuit module, power module, GPS north Struggle against locating module, low-power consumption wake module, overvoltage crowbar;The overvoltage crowbar is by metal-oxide-semiconductor and triode by height Level drags down, and realizes the protection to circuit.
  2. A kind of 2. new-energy automobile monitor terminal of car networking according to claim 1, it is characterised in that:The CAN leads to Believe that module uses the high-speed CAN transceiver of automotive grade, comply fully with ISO11898 standard low-power consumption modes, can be called out by bus Wake up, reserve two-way CAN interface, baud rate can be configured according to configuration information.
  3. A kind of 3. new-energy automobile monitor terminal of car networking according to claim 1, it is characterised in that:The overvoltage is protected Protection circuit includes diode D1, voltage-stabiliser tube D2, voltage-stabiliser tube D3, metal-oxide-semiconductor Q1, PNP type triode Q2 and NPN type triode Q3, and two Pole pipe D1 positive poles connect positive source, negative pole difference connecting resistance R15, resistance R12, PNP type triode Q2 radiation pole, voltage-stabiliser tube D2 negative pole and metal-oxide-semiconductor Q1 source electrode, resistance R20 one end connection power supply, another termination capacitor C42, resistance R21, voltage-stabiliser tube D4, This three device parallel connections of wherein electric capacity C42, resistance R21, voltage-stabiliser tube D4, the other end is grounded after parallel connection, resistance R15 and voltage-stabiliser tube D3 connects, and voltage-stabiliser tube D3 positive pole connects NPN type triode Q3 base stage, and NPN type triode Q3 puts emitter grounding, resistance R19 mono- NPN type triode Q3 base stage other end ground connection is terminated, resistance R17 mono- terminates NPN type triode Q3 another termination of colelctor electrode PNP type triode Q2 base stage, resistance R12 mono- terminate triode Q2 extremely another termination PNP type triode Q2 of radiation base stage, Voltage-stabiliser tube D2 positive pole connects PNP type triode Q2 colelctor electrode, and voltage-stabiliser tube D2 negative pole meets metal-oxide-semiconductor Q1 source electrode, resistance R13 mono- End ground connection, another termination voltage-stabiliser tube D2 positive pole, PNP type triode Q2 colelctor electrode and metal-oxide-semiconductor Q1 grid, metal-oxide-semiconductor Q1's Drain as output voltage.
  4. A kind of 4. new-energy automobile monitor terminal of car networking according to claim any one of 1-3, it is characterised in that:Institute Main control chip is stated using the STM32F407VE or SPC5604B of Freescale.
  5. A kind of 5. new-energy automobile monitor terminal of car networking according to claim any one of 1-3, it is characterised in that:Institute 3G network communication module model GL865/MU509 is stated, is remotely updated for remote data transmission and OTA.
  6. A kind of 6. new-energy automobile monitor terminal of car networking according to claim any one of 1-3, it is characterised in that:Institute GPS Big Dipper locating module model U-blox NEO-7/8M are stated, for providing vehicle position information.
  7. A kind of 7. new-energy automobile monitor terminal of car networking according to claim any one of 1-3, it is characterised in that:Institute The 2 tunnel CAN transceivers that CAN transceiver uses model TJA1042 are stated, meet that T-BOX and in-vehicle network communication pass It is defeated, most of requirements can be met, support CAN to wake up.
  8. A kind of 8. monitoring system based on above-mentioned monitor terminal, it is characterised in that:Including monitor terminal, the monitor terminal passes through BCM, TCU gearbox in CAN connection automobile, EMC engines, EBS/ABS+ESC brakes, VDR recorders, and IC tables and door controller, the monitor terminal also connect background server by 3G network, and the background server connects mobile phone APP。
CN201710689620.4A 2017-08-11 2017-08-11 A kind of new-energy automobile monitoring terminal system of car networking Pending CN107402537A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108240152A (en) * 2017-11-30 2018-07-03 吉利汽车研究院(宁波)有限公司 Vehicle window control system and method
CN108322900A (en) * 2018-01-24 2018-07-24 杭州砺玛物联网科技有限公司 A kind of engineering truck data transmission method and system based on 4G networks
CN108364373A (en) * 2018-02-07 2018-08-03 安徽星网软件技术有限公司 Vehicle behavior monitoring method and device
CN109484329A (en) * 2018-10-22 2019-03-19 魏赛尔 A kind of car networking information terminal
WO2019119983A1 (en) * 2017-12-19 2019-06-27 晶晨半导体(上海)股份有限公司 Control system for controlling smart system to lower power consumption on basis of bluetooth device
CN110884462A (en) * 2019-12-04 2020-03-17 奇瑞商用车(安徽)有限公司 Automobile safety monitoring system and method
CN113507402A (en) * 2021-04-07 2021-10-15 惠州市德赛西威汽车电子股份有限公司 TBOX diagnosis method for passive CAN

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108240152A (en) * 2017-11-30 2018-07-03 吉利汽车研究院(宁波)有限公司 Vehicle window control system and method
WO2019119983A1 (en) * 2017-12-19 2019-06-27 晶晨半导体(上海)股份有限公司 Control system for controlling smart system to lower power consumption on basis of bluetooth device
US11372470B2 (en) 2017-12-19 2022-06-28 Amlogic (Shanghai) Co., Ltd Control system for controlling intelligent system to reduce power consumption based on bluetooth device
CN108322900A (en) * 2018-01-24 2018-07-24 杭州砺玛物联网科技有限公司 A kind of engineering truck data transmission method and system based on 4G networks
CN108364373A (en) * 2018-02-07 2018-08-03 安徽星网软件技术有限公司 Vehicle behavior monitoring method and device
CN109484329A (en) * 2018-10-22 2019-03-19 魏赛尔 A kind of car networking information terminal
CN110884462A (en) * 2019-12-04 2020-03-17 奇瑞商用车(安徽)有限公司 Automobile safety monitoring system and method
CN113507402A (en) * 2021-04-07 2021-10-15 惠州市德赛西威汽车电子股份有限公司 TBOX diagnosis method for passive CAN

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