CN104394190A - Vehicle-mounted equipment and mobile phone integral system based on Bluetooth transmission - Google Patents
Vehicle-mounted equipment and mobile phone integral system based on Bluetooth transmission Download PDFInfo
- Publication number
- CN104394190A CN104394190A CN201410566250.1A CN201410566250A CN104394190A CN 104394190 A CN104394190 A CN 104394190A CN 201410566250 A CN201410566250 A CN 201410566250A CN 104394190 A CN104394190 A CN 104394190A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 24
- 230000003993 interaction Effects 0.000 claims abstract description 10
- 230000004044 response Effects 0.000 claims abstract description 3
- 230000006854 communication Effects 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 14
- 230000006855 networking Effects 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 9
- 238000003745 diagnosis Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
- H04B5/48—Transceivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Human Computer Interaction (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a vehicle-mounted equipment and mobile phone integral system based on Bluetooth transmission. The system comprises an in-vehicle information network system and a mobile Internet system, wherein the in-vehicle information network system comprises an ECU (Electronic Control Unit) module, a vehicle-mounted equipment Bluetooth module, a vehicle-mounted equipment man-machine interaction module and an automobile electrical appliance; the ECU module is used for receiving data or an instruction of a mobile phone, and executing the mobile phone instruction or sending an instruction to the mobile phone in response to the command in order to realize connection of the mobile phone with the vehicle-mounted equipment; the vehicle-mounted equipment Bluetooth module is taken as an information exchange medium of the vehicle-mounted equipment; the vehicle-mounted equipment is connected with the mobile phone through the vehicle-mounted equipment Bluetooth module; the vehicle-mounted equipment is used for controlling the mobile phone through the vehicle-mounted equipment man-machine interaction module; the ECU module is used for acquiring running parameters of the automobile electrical appliance through a CAN (Controller Area Network) bus. The vehicle-mounted equipment, network information acquisition through the automobile CAN bus, high-fidelity sound playing, APP application of a smart phone platform and mobile Internet technology application are organically combined to upgrade a low-cost vehicle-mounted electrical appliance, and good user experience is formed.
Description
Technical field
The invention belongs to mobile phone car machine interconnection technique field, be specifically related to the car hand set integral system based on Bluetooth transmission.
Background technology
Along with the fast development of automobile industry, the function of garage is more and more complete, more and more hommization, but for traditional automobile, the particularly vehicle-mounted equipment without display screen, as electricity adjusts the stereo set such as broadcast receiver, CD player, its function is very limited.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of car hand set integral system based on Bluetooth transmission, car machine and the mobile phone of band bluetooth are formed communication network system, whole system carries out information transmission by bluetooth, realize car machine and mobile phone interactive cooperation, mobile phone is as the display screen of car machine, and car machine is as data in mobile phone collection and control terminal.
Technical scheme of the present invention is: a kind of car hand set integral system based on Bluetooth transmission, comprise in-vehicle information network system and Mobile Internet system, described in-vehicle information network system comprises, ECU module: ECU module receives data or the order of mobile phone, and response instruction, perform mobile phone command or send order to mobile phone, realize mobile phone and car machine is interconnected; Car machine bluetooth module: the information exchange medium of car machine, car machine connects mobile phone by car machine bluetooth module; Car machine human-computer interaction module: car machine controls mobile phone by car machine human-computer interaction module; Car electrics: ECU module gathers the operational factor of car electrics by CAN; Described Mobile Internet system comprises: Bluetooth of mobile phone module: the information exchange medium of mobile phone and car machine, and mobile phone carries out information exchange by bluetooth communication module and car machine; Mobile phone human-computer interaction module: be used for car machine sending controling instruction; Car is networked: by mobile phone to car machine sending controling instruction, controls car electrics and gathers car electrics operational factor, and carrying out operational analysis to the parameter returned.Described car machine human-computer interaction module comprises automobile button and voice-input device.Described mobile phone is connected by 3G, GPRS, WIFI or 4G network with car networking.Described car electrics comprise WIFI camera, and car networking is by mobile phone control WIFI camera.Described car electrics comprise sound equipment, mobile phone by Bluetooth of mobile phone module by audio file transmissions to car machine, played back by sound equipment.Touch mode by NFC before described car machine bluetooth module or Bluetooth of mobile phone module send data and transmit decruption key to recipient, with encryption key, data are encrypted.Described car machine bluetooth module or Bluetooth of mobile phone module do not need coupling and certification to another equipment transmission data.
The present invention has following good effect: car machine and automobile CAN-bus network information gathering, high-fidelity sound are play and intelligent mobile phone platform APP applies and development of Mobile Internet technology is applied to organically combine and upgraded by the vehicle mounted electrical apparatus of low cost, and forms good Consumer's Experience.Adopt this standard carry out mobile phone car machine interconnected time, can realize the installation mobile phone of application specific software and the double-direction control of car machine, make user in vehicle traveling process, without looking at mobile phone screen, touch mobile phone screen or operating handset button, only need to control mobile phone by the physical button on vehicle-mounted or voice command, comprise answer/make phone, media play, GPS navigation etc., also can complete the functions such as vehicle backing backsight, vehicle data collection, failure diagnosis, remote monitoring simultaneously, thus realize the upgrading of low cost vehicle-mounted system.
Accompanying drawing explanation
Fig. 1 is the system construction drawing of the specific embodiment of the invention;
Fig. 2 is specific embodiment of the invention power supply and reset circuit of SCM figure;
Fig. 3 is single-chip microcomputer and the peripheral circuit diagram thereof of the specific embodiment of the invention;
Fig. 4 is the bluetooth modular circuit principle of the specific embodiment of the invention;
Fig. 5 is the vehicle mounted electrical apparatus control principle drawing of the specific embodiment of the invention.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is as the effect of the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part and operation principle, manufacturing process and operation using method etc., be described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technical scheme.
The invention provides a kind of car machine of band bluetooth communication that utilizes (with the equipment with or without display screen, as electricity adjusts broadcast receiver, the stereo sets such as CD player) form the car hand set integral system of communication network system with the smart mobile phone of band bluetooth, in vehicle-mounted ECU and car CAN and car, electrical equipment forms in-vehicle network information system, smart mobile phone and the Internet form Mobile Internet system, by bluetooth car machine and the interconnected car hand set integral system realizing being with the car machine of displayless equipment and mobile phone resources to share of car machine.The invention provides the solution be connected with the car machine equipment without display screen by mobile device, utilize the display screen of smart mobile phone and between application software and car machine, two-way communication brings stronger interactive multi-mode to experience.The stereo set of car machine is as the sound equipment of mobile phone, and the physical button of car machine is as the control button of mobile phone, and mobile phone is as the display screen of car machine, navigator and control port etc.
One, bluetooth communication module
Car machine bluetooth module connects user's bluetooth cellular phone, constitutes wireless communication networks in car, and user mobile phone installs special communication process software to realize the object by mobile phone interface and automobile exchange message.Car machine uses the equipment such as physical button or voice, controls smart mobile phone by bluetooth module; Such as, by car machine button answering cell phone phone, or mobile phone player is transferred to car machine sound equipment, mobile phone song etc. is play with car machine sound equipment, smart mobile phone connects car machine by bluetooth module, control car machine and complete the functions such as the collection of vehicle data operational factor, failure diagnosis, and result is turned back to mobile phone display screen; Data can be sent to car networking data server by wireless Internet (as 3G, GPRS, WIFI, 4G network) and to carry out storing, analyze, process, to realize the part basic function of car networking, the functions such as such as failure diagnosis by smart mobile phone again.
Two, car machine
This invents mainly for the car machine without display screen, except normal amusement function, as AM/FM radio reception, MP3/WMA digital broadcast, CD play, and on-vehicle Bluetooth.The information that needs maybe can be shown by the ECU cell processing of the information read from bus as the states such as air-conditioner temperature, road speed, Fuel Oil Remaining, engine temperature, mileage, vehicle internal and external temperature and door lock, vehicle window, safety belt, parking brake, trunk, bonnet, car light send car machine to is shown by mobile phone and maybe will the information of voice message be needed to be play by Music centre loudspeaker.Parameter, by the operational factor of each electrical equipment of CAN collection vehicle, is then turned back to mobile phone display screen by bluetooth module, realizes car machine status monitoring by ECU.
Using method of the present invention is: mobile phone utilizes particular network (2G, 3G or 4G) to send instruction by specific application software operation interface or car internet services operator, instruction is sent to the ECU of car machine through bluetooth communication module, ECU starts corresponding operation after receiving instruction, carries out the operations such as remote monitoring as controlled broadcast receiver, CD Player, vehicle carried data collecting, vehicle-mounted fault diagnosis or starting Wifi camera; Mobile phone transmits voice data by bluetooth communication module, and voice data is delivered to the stereo set of car machine by bluetooth module, and the Music centre loudspeaker eventually through car machine exports mobile phone audio-frequency data.
Car machine to be controlled by bluetooth communication module by physical button or notifies mobile phone, comprise receive calls, the function such as media play, GPS navigation, vehicle backing backsight, fault upload.Smart mobile phone is as the display screen of car machine and car networking data Transmit-Receive Unit.
Bluetooth is a kind of open short-distance wireless communication technology, and it is based on the near radio of low cost connects, and sets up one be connected especially for fixing with mobile device communication environment.For meeting basic safety and interference free performance demand, the invention provides a kind of mechanism of transmitted data acquisition being encrypted in application layer.At this moment we can adopt certain cryptographic algorithm, transmit leg equipment is first touched mode by NFC before transmitting the data and is transmitted decruption key to receiver equipment, then transmitted data encryption key is encrypted, then uses bluetooth non-security mode to send to the other side information after encryption.Owing to using non-security mode transmission, between two bluetooth equipments, do not need pairing and mutual certification.
For the cryptographic algorithm used, we both can adopt symmetric encipherment algorithm, and now we transmit the symmetric key of stochastic generation before transmitting the data; Or employing public key encryption algorithm, now we transmit the decruption key of the cipher key pair of stochastic generation.Because symmetric encipherment algorithm is simpler and easy than public key encryption algorithm, performance is higher, when using NFC mode transmission security key substantially can ensure not to be stolen, the symmetric encipherment algorithm that the same random key of choice for use encrypts and decrypts is ideal, and therefore we can select wherein comparatively general aes algorithm to be encrypted the data that will transmit.
This method is abandoned at Bluetooth transmission layer by the protection to transmission data security of the security mechanism of the agreements such as SDP; and transmit key by secured fashion; in the fail safe of application layer service data; avoid PIN password generate, user confirm join equivalent process; when security purpose can be reached equally; Consumer's Experience can be promoted further, can reduce simultaneously two equipment connection processes of setting up to transmission bring consuming time.Because NFC is designed to have extremely short operating distance (about 10cm), and with Bluetooth communication not in identical frequency band, the PIN password of this band outer transmission means exchange stochastic generation or application layer encryption key is used to be very safe.Third-party equipment cannot get on so short distance and at the frequency band of lower frequency to eavesdrop and intercept and capture the key transmitted, and will greatly improve the fail safe of transfer of data like this.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (7)
1. based on a car hand set integral system for Bluetooth transmission, it is characterized in that: comprise in-vehicle information network system and Mobile Internet system, described in-vehicle information network system comprises:
ECU module: ECU module receives the data of mobile phone or order, and response instruction, perform mobile phone command or send order to mobile phone, realizes mobile phone and car machine is interconnected;
Car machine bluetooth module: the information exchange medium of car machine, car machine connects mobile phone by car machine bluetooth module;
Car machine human-computer interaction module: car machine controls mobile phone by car machine human-computer interaction module;
Car electrics: ECU module gathers the operational factor of car electrics by CAN;
Described Mobile Internet system comprises:
Bluetooth of mobile phone module: the information exchange medium of mobile phone and car machine, mobile phone carries out information exchange by bluetooth communication module and car machine;
Mobile phone human-computer interaction module: be used for car machine sending controling instruction;
Car is networked: by mobile phone to car machine sending controling instruction, controls car electrics and gathers car electrics operational factor, and carrying out operational analysis to the parameter returned.
2. the car hand set integral system based on Bluetooth transmission according to claim 1, is characterized in that: described car machine human-computer interaction module comprises automobile button and voice-input device.
3. the car hand set integral system based on Bluetooth transmission according to claim 1, is characterized in that: described mobile phone is connected by 3G, GPRS, WIFI or 4G network with car networking.
4. the car hand set integral system based on Bluetooth transmission according to claim 1, is characterized in that: described car electrics comprise WIFI camera, and car networking is by mobile phone control WIFI camera.
5. the car hand set integral system based on Bluetooth transmission according to claim 4, is characterized in that: described car electrics comprise sound equipment, mobile phone by Bluetooth of mobile phone module by audio file transmissions to car machine, played back by sound equipment.
6. the car hand set integral system based on Bluetooth transmission according to claim 1-5 any one, it is characterized in that: touch mode by NFC before described car machine bluetooth module or Bluetooth of mobile phone module send data and transmit decruption key to recipient, with encryption key, data are encrypted.
7. the car hand set integral system based on Bluetooth transmission according to claim 6, is characterized in that: described car machine bluetooth module or Bluetooth of mobile phone module do not need coupling and certification to another equipment transmission data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410566250.1A CN104394190A (en) | 2014-10-22 | 2014-10-22 | Vehicle-mounted equipment and mobile phone integral system based on Bluetooth transmission |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410566250.1A CN104394190A (en) | 2014-10-22 | 2014-10-22 | Vehicle-mounted equipment and mobile phone integral system based on Bluetooth transmission |
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| CN104394190A true CN104394190A (en) | 2015-03-04 |
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| CN201410566250.1A Pending CN104394190A (en) | 2014-10-22 | 2014-10-22 | Vehicle-mounted equipment and mobile phone integral system based on Bluetooth transmission |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105539324A (en) * | 2015-12-07 | 2016-05-04 | 北京汽车股份有限公司 | Main engine and auxiliary engine interaction method, Bluetooth gateway, auxiliary engine mobile device and vehicle-mounted terminal |
| CN105539219A (en) * | 2015-12-31 | 2016-05-04 | 宇龙计算机通信科技(深圳)有限公司 | Safety seat state inspection method and device |
| CN106341147A (en) * | 2016-08-31 | 2017-01-18 | 上海斐讯数据通信技术有限公司 | Intelligent vehicle-mounted system based on mobile terminal |
| CN106454697A (en) * | 2016-08-19 | 2017-02-22 | 深圳市元征科技股份有限公司 | Bluetooth switching method and device |
| CN106453499A (en) * | 2016-09-08 | 2017-02-22 | 深圳华汽车科技有限公司 | Data saving intelligent vehicle mounted wireless information transmitting system and method |
| CN107131888A (en) * | 2017-05-12 | 2017-09-05 | 重庆大学 | Automobile oil mass based on bluetooth cellular phone indicates system and control method |
| CN107430394A (en) * | 2015-05-29 | 2017-12-01 | 华为技术有限公司 | A kind of and the method for vehicle device interaction data, server, mobile terminal and device |
| CN107645305A (en) * | 2017-09-30 | 2018-01-30 | 泉州市琪祥电子科技有限公司 | The system that a kind of mobile communication equipment interconnects with vehicle radio station |
| CN107948407A (en) * | 2017-11-14 | 2018-04-20 | 安徽森力汽车电子有限公司 | A kind of In-vehicle networking radio realized by voice control and mobile phone interconnection |
| CN108027810A (en) * | 2015-09-23 | 2018-05-11 | 卡特彼勒公司 | Use the method and system of mobile equipment collecting robot operation data |
| CN110010139A (en) * | 2019-03-28 | 2019-07-12 | 南昌黑鲨科技有限公司 | Audio input output method, system and computer readable storage medium |
| WO2019242092A1 (en) * | 2018-06-22 | 2019-12-26 | 原点显示（深圳）科技有限公司 | Method for vehicle-mounted system to control mobile terminal |
| CN111105797A (en) * | 2019-12-18 | 2020-05-05 | 苏州思必驰信息科技有限公司 | Voice interaction method and device and electronic equipment |
| CN111556555A (en) * | 2020-04-29 | 2020-08-18 | 杭州涂鸦信息技术有限公司 | Low-power-consumption keep-alive method and system for network camera and gateway |
| CN113660301A (en) * | 2021-06-30 | 2021-11-16 | 东风汽车集团股份有限公司 | Control method and device for automobile central control, automobile central control and storage medium |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107430394A (en) * | 2015-05-29 | 2017-12-01 | 华为技术有限公司 | A kind of and the method for vehicle device interaction data, server, mobile terminal and device |
| US10798544B2 (en) | 2015-05-29 | 2020-10-06 | Huawei Technologies Co., Ltd. | Method for exchanging data with in-vehicle infotainment, server, mobile terminal, and apparatus |
| US20180146356A1 (en) | 2015-05-29 | 2018-05-24 | Huawei Technologies Co., Ltd. | Method for exchanging data with in-vehicle infotainment, server, mobile terminal, and apparatus |
| CN108027810B (en) * | 2015-09-23 | 2021-09-28 | 卡特彼勒公司 | Method and system for collecting machine operation data using mobile device |
| CN108027810A (en) * | 2015-09-23 | 2018-05-11 | 卡特彼勒公司 | Use the method and system of mobile equipment collecting robot operation data |
| CN105539324A (en) * | 2015-12-07 | 2016-05-04 | 北京汽车股份有限公司 | Main engine and auxiliary engine interaction method, Bluetooth gateway, auxiliary engine mobile device and vehicle-mounted terminal |
| CN105539219A (en) * | 2015-12-31 | 2016-05-04 | 宇龙计算机通信科技(深圳)有限公司 | Safety seat state inspection method and device |
| CN105539219B (en) * | 2015-12-31 | 2018-11-06 | 宇龙计算机通信科技(深圳)有限公司 | A kind of condition detection method and device based on safety seat |
| CN106454697A (en) * | 2016-08-19 | 2017-02-22 | 深圳市元征科技股份有限公司 | Bluetooth switching method and device |
| CN106341147B (en) * | 2016-08-31 | 2019-07-05 | 上海斐讯数据通信技术有限公司 | A kind of intelligent vehicle-mounted system based on mobile terminal |
| CN106341147A (en) * | 2016-08-31 | 2017-01-18 | 上海斐讯数据通信技术有限公司 | Intelligent vehicle-mounted system based on mobile terminal |
| CN106453499A (en) * | 2016-09-08 | 2017-02-22 | 深圳华汽车科技有限公司 | Data saving intelligent vehicle mounted wireless information transmitting system and method |
| CN107131888A (en) * | 2017-05-12 | 2017-09-05 | 重庆大学 | Automobile oil mass based on bluetooth cellular phone indicates system and control method |
| CN107131888B (en) * | 2017-05-12 | 2019-09-24 | 重庆大学 | Automobile oil mass instruction system and control method based on bluetooth cellular phone |
| CN107645305B (en) * | 2017-09-30 | 2020-09-01 | 泉州市琪祥电子科技有限公司 | System for interconnection and intercommunication of mobile communication equipment and vehicle-mounted radio station |
| CN107645305A (en) * | 2017-09-30 | 2018-01-30 | 泉州市琪祥电子科技有限公司 | The system that a kind of mobile communication equipment interconnects with vehicle radio station |
| CN107948407A (en) * | 2017-11-14 | 2018-04-20 | 安徽森力汽车电子有限公司 | A kind of In-vehicle networking radio realized by voice control and mobile phone interconnection |
| WO2019242092A1 (en) * | 2018-06-22 | 2019-12-26 | 原点显示（深圳）科技有限公司 | Method for vehicle-mounted system to control mobile terminal |
| CN110010139A (en) * | 2019-03-28 | 2019-07-12 | 南昌黑鲨科技有限公司 | Audio input output method, system and computer readable storage medium |
| CN111105797A (en) * | 2019-12-18 | 2020-05-05 | 苏州思必驰信息科技有限公司 | Voice interaction method and device and electronic equipment |
| CN111556555A (en) * | 2020-04-29 | 2020-08-18 | 杭州涂鸦信息技术有限公司 | Low-power-consumption keep-alive method and system for network camera and gateway |
| CN113660301A (en) * | 2021-06-30 | 2021-11-16 | 东风汽车集团股份有限公司 | Control method and device for automobile central control, automobile central control and storage medium |
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