CN114374950A - Bluetooth-based short-range vehicle control system, vehicle control method and vehicle - Google Patents
Bluetooth-based short-range vehicle control system, vehicle control method and vehicle Download PDFInfo
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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
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00571—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by interacting with a central unit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/03—Protecting confidentiality, e.g. by encryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
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- 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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Abstract
The invention discloses a short-range vehicle control system, a vehicle control method and an automobile based on Bluetooth, wherein the system comprises a mobile phone end, a vehicle end and a cloud end; the mobile phone end is used for identifying the network state when the mobile phone end is communicated with the cloud end, receiving the Bluetooth key information from the cloud end and transmitting the Bluetooth key information to the vehicle end in the normal network, and transmitting the prestored Bluetooth key information to the vehicle end in the weak network or the network-free network; the vehicle end and the mobile phone end carry out bidirectional authentication communication connection, and simultaneously feed back the execution result of the vehicle end on the Bluetooth key information; the cloud end is in two-way communication connection with the mobile phone end, transmits the Bluetooth key information to the mobile phone end in a normal network, and receives the feedback information from the mobile phone end. According to the invention, the automobile can still be controlled by the Bluetooth key under the condition that the communication network between the mobile phone end and the cloud is in a wireless or weak network state, so that the use experience of the mobile phone Bluetooth key of a user in a position with poor network environment such as a garage is improved, and more convenience is brought to the user for using the automobile.
Description
Technical Field
The invention relates to the technical field of intelligent automobiles, in particular to a Bluetooth-based short-range automobile control system, a Bluetooth-based short-range automobile control method and an automobile.
Background
The current bluetooth key of car is based on the derivation of entity key, only needs the user to carry the smart mobile phone can pass through bluetooth key control vehicle. Although the bluetooth key is a short-range vehicle control, based on the security consideration of the bluetooth key, the implementation scheme includes data interaction with the cloud of the vehicle factory, which results in that under the condition of a weak network, the information of the mobile phone and the cloud of the vehicle factory has a large time delay or even cannot be transmitted, so that the use of the bluetooth key has certain limitation.
For example, the invention patent application with the application number of CN202111019337.3 discloses a vehicle bluetooth key generation and authentication method and system in a wireless environment, wherein the method is applied to a mobile terminal, a cloud terminal and a vehicle terminal; the vehicle Bluetooth key generation and authentication method under the wireless environment comprises the following steps: the mobile terminal initiates a vehicle Bluetooth key acquisition request to the cloud terminal; the cloud end generates key identification information after receiving a vehicle Bluetooth key acquisition request, and generates a user Bluetooth key by using the key identification information and a preset root key; sending the user Bluetooth key and the key identification information to the mobile terminal; the mobile terminal sends the first random number generated randomly and the received key identification information to the vehicle-mounted terminal; and the vehicle-mounted terminal generates a user Bluetooth key according to the key identification information and the preset root key. The technical scheme of the invention can generate the vehicle Bluetooth key and authenticate the vehicle Bluetooth key under the vehicle-end network-free environment, and meanwhile, the vehicle-end Bluetooth key information is ensured not to be leaked, thereby increasing the safety.
However, in the above solutions, only the method for generating the bluetooth key in the vehicle-mounted end wireless environment is used, and the mobile terminal and the cloud are still in a normal network state, but in the actual use process, it often occurs that the mobile terminal is in a wireless or weak network state, and thus the mobile terminal and the cloud cannot normally communicate with each other, so that a technical solution that the vehicle can still be controlled by the bluetooth key when the communication network between the mobile terminal and the cloud is in the wireless or weak network state is urgently needed.
Disclosure of Invention
Aiming at the defects in the prior art, the technical problems to be solved by the invention are as follows: how to provide a communication network between a mobile phone end and a cloud for controlling an automobile through a Bluetooth key under a wireless or weak network state, thereby improving the use experience of the mobile phone Bluetooth key at a position with poor network environment such as a garage and the like of a user, and bringing more convenience for the user to use the automobile.
In order to solve the technical problems, the invention adopts the following technical scheme:
a short-range vehicle control system based on Bluetooth is characterized by comprising a mobile phone end, a vehicle end and a cloud end;
the mobile phone end is used for identifying the network state when the mobile phone end is communicated with the cloud end, receiving the Bluetooth key information from the cloud end and transmitting the Bluetooth key information to the vehicle end when the network state is a normal network, and transmitting the Bluetooth key information pre-stored in the mobile phone end to the vehicle end when the network state is a weak network or no network;
the vehicle end is used for carrying out bidirectional authentication communication connection with the mobile phone end so as to receive and verify the Bluetooth key information from the mobile phone end, and carrying out corresponding operation on the vehicle according to the received Bluetooth key information after the verification is passed, and simultaneously feeding back an execution result of the vehicle end on the Bluetooth key information to the mobile phone end;
the cloud end is in two-way communication connection with the mobile phone end and used for issuing Bluetooth key information to the mobile phone end when the network states of the mobile phone end and the cloud end are normal networks and receiving feedback information from the mobile phone end.
The working principle of the invention is as follows: when the automobile is controlled by the Bluetooth key, the network state of the automobile in communication with the cloud end is judged by the mobile phone end, when the network state between the mobile phone end and the cloud end is a normal network, the Bluetooth key information is sent to the mobile phone end by the cloud end, then the Bluetooth key information is sent to the automobile end by the mobile phone end, the automobile end receives and verifies the Bluetooth key information from the mobile phone end, corresponding operation is carried out on the automobile according to the received Bluetooth key information after the verification is passed, and meanwhile, the execution result of the automobile end on the Bluetooth key information is fed back to the mobile phone end.
When the network state between the mobile phone end and the cloud end is a non-network or weak-network state, the mobile phone end reads the internally pre-stored Bluetooth key information and then sends the Bluetooth key information to the vehicle end, the vehicle end receives and verifies the Bluetooth key information from the mobile phone end, corresponding operation is carried out on the vehicle according to the received Bluetooth key information after the verification is passed, and meanwhile, the execution result of the vehicle end on the Bluetooth key information is fed back to the mobile phone end.
Therefore, the vehicle can still be controlled by the Bluetooth key when the communication network between the mobile phone end and the cloud is in a non-network or weak network state, so that the use experience of the mobile phone Bluetooth key of a user in a position with poor network environment such as a garage is improved, and more convenience is brought to the user for using the vehicle.
Preferably, the mobile phone end comprises a network monitoring unit, a local storage unit, a bluetooth key information request unit and a mobile phone bluetooth communication unit;
the output end of the network monitoring unit is simultaneously in communication connection with the input end of the local storage unit and the input end of the Bluetooth key information request unit, and is used for monitoring the network state when the mobile phone end is in communication with the cloud end, outputting a signal to the Bluetooth key information request unit when the network state is a normal network, and outputting a signal to the local storage unit when the network state is a no network or a weak network;
the output end of the local storage unit is in communication connection with the input end of the mobile phone Bluetooth communication unit and is used for storing Bluetooth key information and outputting the stored Bluetooth key information to the mobile phone Bluetooth communication unit when no network or a weak network exists;
the Bluetooth key information request unit is in bidirectional communication connection with the cloud end and used for receiving Bluetooth key information from the cloud end in a normal network, and the output end of the Bluetooth key information request unit is also in communication connection with the input end of the mobile phone Bluetooth communication unit so as to transmit the received Bluetooth key information from the cloud end to the mobile phone Bluetooth communication unit;
the mobile phone Bluetooth communication unit is in communication connection with the vehicle end in a bidirectional authentication mode so as to transmit Bluetooth key information to the vehicle end and receive an execution result of the Bluetooth key information from the vehicle end.
Preferably, the vehicle end comprises a vehicle end Bluetooth communication unit, an electronic controller unit, a vehicle control execution unit and a state feedback unit;
the vehicle-end Bluetooth communication unit is in bidirectional authentication communication connection with the mobile phone Bluetooth communication unit, the output end of the vehicle-end Bluetooth communication unit is also in communication connection with the input end of the electronic controller unit so as to receive and verify Bluetooth key information from the mobile phone Bluetooth communication unit, analyze and transmit the Bluetooth key information to the electronic controller unit after the verification is passed, and simultaneously feed back the execution result of the vehicle end on the Bluetooth key information to the mobile phone Bluetooth communication unit;
the output end of the electronic controller unit is in communication connection with the input end of the vehicle control execution unit and is used for converting the received Bluetooth key information into a corresponding vehicle control instruction and transmitting the vehicle control instruction to the vehicle control execution unit;
the output end of the vehicle control execution unit is in communication connection with the input end of the state feedback unit and is used for executing corresponding vehicle control operation according to the vehicle control instruction transmitted by the electronic controller unit and transmitting an execution result of the vehicle control instruction to the state feedback unit;
the output end of the state feedback unit is in communication connection with the input end of the electronic controller unit and is used for transmitting the received execution result information of the vehicle control instruction from the vehicle control execution unit to the electronic controller unit.
A short-range vehicle control method based on Bluetooth adopts the short-range vehicle control system based on Bluetooth, and comprises the following steps:
step 1) the mobile phone side judges the network state when communicating with the cloud side, executes step 2) when the network state is a normal network, and executes step 3) when the network state is a no-network or weak-network state;
step 2) the cloud end sends the Bluetooth key information to the mobile phone end and then executes step 4);
step 3) the mobile phone end reads the Bluetooth key information pre-stored in the mobile phone end and then executes step 4);
step 4), the mobile phone end sends Bluetooth key information to the vehicle end;
and 5) the vehicle end receives and verifies the Bluetooth key information from the mobile phone end, and performs corresponding operation on the vehicle according to the received Bluetooth key information after the verification is passed, and simultaneously feeds back the execution result of the vehicle end on the Bluetooth key information to the mobile phone end.
Preferably, in step 1), the mobile phone end determines a network state when the mobile phone end communicates with the cloud end according to mobile phone signal power strength and byte response time.
Preferably, step 1) comprises the following steps:
step 1, 1) the mobile phone end judges the network state according to the mobile phone signal power strength, when the mobile phone end judges that the network state is a normal network according to the mobile phone signal power strength, the step 1 and the step 2 are executed, and when the mobile phone end judges that the network state is a no-network or weak-network state according to the mobile phone signal power strength, the step 1 and the step 4 are executed;
step 1, 2) the mobile phone end judges the network state according to the byte response time, when the mobile phone end judges that the network state is a normal network according to the byte response time, step 3) is executed, and when the mobile phone end judges that the network state is a no-network or weak-network state according to the byte response time, steps 1 and 4 are executed;
step 1, 3) the mobile phone side judges that the network state of the communication with the cloud side is a normal network, and step 2) is executed;
step 1, 4) the mobile phone side judges whether the network state of the communication with the cloud side is a wireless network or a weak network, and step 3) is executed.
Preferably, in the step 1 and 1), when the signal power intensity of the mobile phone is-50 db to-85 db, the mobile phone end judges that the network state is a normal network according to the signal power intensity of the mobile phone; when the signal power intensity of the mobile phone is-86 db to-110 db, the mobile phone end judges that the network state is a weak network state according to the signal power intensity of the mobile phone; when the signal power intensity of the mobile phone is less than-110 db, the mobile phone end judges that the network state is a non-network state according to the signal power intensity of the mobile phone;
in steps 1 and 2), when the byte response time is less than 5s, the mobile phone end judges that the network state is a normal network according to the byte response time, and when the byte response time is more than or equal to 5s, the mobile phone end judges that the network state is a weak network state according to the byte response time.
Preferably, in step 2), before the cloud sends the bluetooth key information to the mobile phone terminal, the mobile phone terminal requests the encrypted bluetooth key information from the cloud terminal, and the mobile phone terminal simultaneously transmits the vehicle identification number, the user certificate and the user unique account number of the vehicle to the cloud terminal.
Preferably, the mobile phone end comprises a network monitoring unit, a local storage unit, a bluetooth key information request unit and a mobile phone bluetooth communication unit, and the vehicle end comprises a vehicle end bluetooth communication unit, an electronic controller unit, a vehicle control execution unit and a state feedback unit;
in the step 1), the network monitoring unit judges the network state when the mobile phone end communicates with the cloud end;
in step 2), the cloud end issues Bluetooth key information to the Bluetooth key information request unit, and the Bluetooth key information request unit transmits the Bluetooth key information to the mobile phone Bluetooth communication unit and then executes step 4);
in the step 3), the local storage unit reads the internally stored Bluetooth key information and transmits the information to the mobile phone Bluetooth communication unit, and then the step 4) is executed;
in the step 4), the mobile phone Bluetooth communication unit sends Bluetooth key information to the vehicle-mounted Bluetooth communication unit;
in step 5), the vehicle-mounted bluetooth communication unit receives and verifies bluetooth key information from the mobile phone bluetooth communication unit, and analyzes and transmits the bluetooth key information to the electronic controller unit after the verification is passed, the electronic control unit outputs corresponding vehicle control execution to the vehicle control execution unit, the vehicle control execution unit executes corresponding vehicle control operation and transmits an execution result of a vehicle control instruction to the state feedback unit, and the state feedback unit further transmits the execution result information of the vehicle control instruction to the electronic controller unit.
An automobile adopts the Bluetooth-based short-range automobile control method.
Compared with the prior art, the invention has the following advantages:
1. when the automobile is controlled by the Bluetooth key, when the communication between the mobile phone end and the cloud end is normal, the Bluetooth key information from the cloud end is received by the mobile phone end and sent to the automobile end, and when the communication between the mobile phone end and the cloud end is abnormal, namely the communication between the mobile phone end and the cloud end is in a no-net or weak-net state, the Bluetooth key information pre-stored in the mobile phone end is read by the mobile phone end and directly sent to the automobile end, so that the automobile can be normally controlled by the Bluetooth key no matter what the network signal of the mobile phone end is, the use experience of the mobile phone Bluetooth key in the position with poor network environment such as a garage can be improved, and more convenience is brought to the automobile using of a user.
2. When the invention judges the network state of communication between the mobile phone end and the cloud end, the invention judges the state together through the mobile phone signal power strength and the byte response time, when any one of the mobile phone signal power strength and the byte response time can not meet the requirements of normal network, the network monitoring unit outputs signals to the local storage unit, so that the local storage unit outputs the Bluetooth key information to the mobile phone Bluetooth communication unit, only when the mobile phone signal power strength and the byte response time can simultaneously meet the requirements of normal network, the network monitoring unit outputs signals to the Bluetooth key information request unit, at the moment, the cloud end sends the Bluetooth key information to the Bluetooth key request unit, thus ensuring the effective communication between the mobile phone end and the cloud end, and timely adopting the Bluetooth key information cached locally to control the automobile when the communication between the mobile phone end and the cloud end can not meet the requirements, therefore, the vehicle using experience of the user in the poor network environment such as a garage is greatly improved.
3. In the invention, the cloud terminal sends the Bluetooth key information to the mobile phone terminal, the mobile phone terminal needs to send the Bluetooth key information after encryption to the cloud terminal, and meanwhile, the mobile phone terminal transmits the vehicle identification number, the user certificate and the unique user account number of the vehicle to the cloud terminal, so that the use safety of the Bluetooth key can be ensured.
Drawings
FIG. 1 is a system block diagram of a Bluetooth-based short-range vehicle control system of the present invention;
fig. 2 is a flow chart of the network monitoring unit determining the network status in the bluetooth-based short-range vehicle control system according to the present invention.
Description of reference numerals: the system comprises a mobile phone end 1, a network monitoring unit 11, a Bluetooth key information request unit 12, a local storage unit 13, a mobile phone Bluetooth communication unit 14, a vehicle end 2, a vehicle end Bluetooth communication unit 21, an electronic controller unit 22, a vehicle control execution unit 23, a state feedback unit 24 and a cloud end 3.
Detailed Description
The invention will be further explained with reference to the drawings and the embodiments.
As shown in fig. 1, a short-range vehicle control system based on bluetooth includes a mobile phone terminal 1, a vehicle terminal 2 and a cloud terminal 3;
the mobile phone terminal 1 is used for identifying a network state when the mobile phone terminal 1 is in communication with the cloud terminal 3, receiving Bluetooth key information from the cloud terminal 3 and transmitting the Bluetooth key information to the vehicle terminal 2 when the network state is a normal network, and transmitting the Bluetooth key information pre-stored in the mobile phone terminal 1 to the vehicle terminal 2 when the network state is a weak network or no network;
the vehicle end 2 is used for carrying out bidirectional authentication communication connection with the mobile phone end 1 so as to receive and verify the Bluetooth key information from the mobile phone end 1, and carrying out corresponding operation on the vehicle according to the received Bluetooth key information after the verification is passed, and simultaneously feeding back the execution result of the vehicle end 2 on the Bluetooth key information to the mobile phone end 1;
the cloud end 3 is in two-way communication connection with the mobile phone end 1 and used for issuing the Bluetooth key information to the mobile phone end 1 when the network states of the mobile phone end 1 and the cloud end 3 are normal networks, so that unified management, distribution, authentication and the like of the Bluetooth key information are realized, and feedback information from the mobile phone end 1 is received, wherein the mode that the cloud end 3 issues the Bluetooth key information to the mobile phone end 1 and a common cloud end 3 interface are realized without too large difference in principle, and therefore redundant explanation is not performed in the application.
The working principle of the invention is as follows: when the automobile is controlled by the Bluetooth key, firstly, the network state of the automobile in communication with the cloud end 3 is judged by the mobile phone end 1, when the network state between the mobile phone end 1 and the cloud end 3 is a normal network, the Bluetooth key information is sent to the mobile phone end 1 by the cloud end 3, then the Bluetooth key information is sent to the automobile end 2 by the mobile phone end 1, the automobile end 2 receives and verifies the Bluetooth key information from the mobile phone end 1, corresponding operation is carried out on the automobile according to the received Bluetooth key information after the verification is passed, and meanwhile, the execution result of the automobile end 2 on the Bluetooth key information is fed back to the mobile phone end 1.
When the network state between the mobile phone end 1 and the cloud end 3 is a wireless or weak network state, the mobile phone end 1 reads the internally pre-stored Bluetooth key information and then sends the Bluetooth key information to the vehicle end 2, the vehicle end 2 receives and verifies the Bluetooth key information from the mobile phone end 1, corresponding operation is performed on the vehicle according to the received Bluetooth key information after the verification is passed, and meanwhile, the execution result of the vehicle end 2 on the Bluetooth key information is fed back to the mobile phone end 1.
Therefore, the vehicle can still be controlled by the Bluetooth key when the communication network between the mobile phone end 1 and the cloud end 3 is in a no-network or weak-network state, so that the use experience of the mobile phone Bluetooth key of a user in a position with poor network environment such as a garage is improved, and more convenience is brought to the user for using the vehicle.
In this embodiment, the mobile phone terminal 1 includes a network monitoring unit 11, a local storage unit 13, a bluetooth key information request unit 12, and a mobile phone bluetooth communication unit 14.
The output end of the network monitoring unit 11 is in communication connection with the input end of the local storage unit 13 and the input end of the bluetooth key information request unit 12, and is used for monitoring the network state when the mobile terminal 1 and the cloud end 3 are in communication, outputting a signal to the bluetooth key information request unit 12 when the network state is a normal network, and outputting a signal to the local storage unit 13 when the network state is a no network or a weak network.
The output end of the local storage unit 13 is in communication connection with the input end of the mobile phone Bluetooth communication unit 14, and is used for storing Bluetooth key information and outputting the stored Bluetooth key information to the mobile phone Bluetooth communication unit 14 when no network or a weak network exists, the Bluetooth key information stored in the local storage unit 13 is downloaded from the cloud end 3 under a normal network when the mobile phone end 1 Bluetooth key is used for the first time, and is stored in the local storage unit 13 for the use in a wireless or weak network state, wherein the storage mode of the android system is based on keyStore storage, and the storage mode of the ios system is based on keyChain storage.
The bluetooth key information request unit 12 is in bidirectional communication connection with the cloud end 3 and is used for receiving bluetooth key information from the cloud end 3 in a normal network, and the output end of the bluetooth key information request unit 12 is also in communication connection with the input end of the mobile phone bluetooth communication unit 14 so as to transmit the received bluetooth key information from the cloud end 3 to the mobile phone bluetooth communication unit 14; under the condition that the network is normal, the bluetooth key information request unit 12 requests the data of the bluetooth key information of the cloud 3 through HTTP communication, and based on safety considerations, the purpose of updating the bluetooth key information in real time every time the bluetooth key is used is achieved.
The mobile phone bluetooth communication unit 14 performs bidirectional authentication communication connection with the vehicle end 2 to transmit bluetooth key information to the vehicle end 2 and receive an execution result of the bluetooth key information from the vehicle end 2. Specifically, the mobile phone bluetooth communication unit 14 acquires bluetooth key information from the local storage unit 13 of the mobile phone end 1, takes out a bluetooth mac address therein and scans peripheral bluetooth devices, because the bluetooth of the vehicle end 2 is always working with low power consumption, connection can be established after scanning, and after connection is completed, the mobile phone end 1 sends bluetooth key information to the bluetooth module of the vehicle end 2 through a bluetooth channel and requests to establish a security channel for bidirectional authentication. Specifically, the bluetooth protocol is self-defined based on a vehicle manufacturer and meets a general bluetooth protocol, the process of establishing the safety channel is that the mobile phone end 1 actively sends specific bluetooth data to the vehicle end 2, and the vehicle end 2 responds to the data and feeds back an execution result of the vehicle end 2 of the mobile phone end 1.
In the present embodiment, the vehicle end 2 includes a vehicle-end bluetooth communication unit 21, an electronic controller unit 22 (ECU unit), a vehicle control execution unit 23, and a state feedback unit 24;
the vehicle-end Bluetooth communication unit 21 is in bidirectional authentication communication connection with the mobile phone Bluetooth communication unit 14, the output end of the vehicle-end Bluetooth communication unit 21 is also in communication connection with the input end of the electronic controller unit 22 to receive and verify Bluetooth key information from the mobile phone Bluetooth communication unit 14, the Bluetooth key information is analyzed and transmitted to the electronic controller unit 22 after the verification is passed, and meanwhile, an execution result of the vehicle-end 2 on the Bluetooth key information is fed back to the mobile phone Bluetooth communication unit 14, specifically, the vehicle-end Bluetooth communication unit 21 waits for the mobile phone-end 1 to actively establish connection, verifies the Bluetooth key information transmitted from the mobile phone-end 1, completes bidirectional authentication and vehicle control instruction analysis with the mobile phone-end 1 based on a Bluetooth protocol specified by a vehicle manufacturer, and transmits a vehicle control instruction to the ECU unit for processing through can communication.
The output end of the electronic controller unit 22 is in communication connection with the input end of the vehicle control execution unit 23 through a CAN bus, and is used for converting the received bluetooth key information into a corresponding vehicle control instruction and transmitting the vehicle control instruction to the vehicle control execution unit 23.
The output end of the vehicle control execution unit 23 is in communication connection with the input end of the state feedback unit 24, and is configured to execute corresponding vehicle control operations, such as unlocking, window lifting, trunk opening, flashing and whistling, according to the vehicle control instruction transmitted by the electronic controller unit 22, and transmit an execution result of the vehicle control instruction to the state feedback unit 24.
The output end of the state feedback unit 24 is in communication connection with the input end of the electronic controller unit 22, and is configured to transmit the received execution result information of the vehicle control instruction executed by the vehicle control execution unit 23 to the electronic controller unit 22, specifically, the state feedback unit 24 processes the execution result of the vehicle control instruction executed by the vehicle control execution unit 23 into a corresponding CAN communication signal, and returns the CAN communication signal to the electronic controller unit 22.
A short-range vehicle control method based on Bluetooth adopts the short-range vehicle control system based on Bluetooth, and comprises the following steps:
step 1) the mobile phone terminal 1 judges the network state when communicating with the cloud terminal 3, executes step 2) when the network state is a normal network, and executes step 3) when the network state is a no-network or weak-network state;
step 2), the cloud 3 sends the Bluetooth key information to the mobile phone 1 and then executes the step 4);
step 3) the mobile phone end 1 reads the Bluetooth key information pre-stored in the mobile phone end and then executes step 4);
step 4), the mobile phone end 1 sends the Bluetooth key information to the vehicle end 2;
and step 5) the vehicle end 2 receives and verifies the Bluetooth key information from the mobile phone end 1, performs corresponding operation on the vehicle according to the received Bluetooth key information after the verification is passed, and simultaneously feeds back the execution result of the vehicle end 2 on the Bluetooth key information to the mobile phone end 1.
In this embodiment, in step 1), the mobile phone terminal 1 determines the network state when the mobile phone terminal 1 communicates with the cloud terminal 3 according to the mobile phone signal power strength and the byte response time.
As shown in fig. 2, in this embodiment, the network monitoring unit 11 will go through two network detection processes when determining the network status, and first, the monitoring of the power intensity of the mobile phone signal can apply for the permission to read the network signal intensity through an android or ios terminal, and when using the bluetooth key, preferentially determines whether the power intensity of the mobile phone signal meets the requirements.
Specifically, the mobile phone signal power TD is referenced to the following with 0db as a reference:
1. -50db to-75 db, the signal is good, typically very close to the base station;
2. -75db to-85 db, normal range, no problem with making calls and surfing;
3. 85db to 95db, wherein the signal is poor, the network speed begins to slow down, and the dialing can be normally used;
4. after-100 db to-110 db, the signal is very poor, and the internet access and the conversation are difficult;
5. after-110 db, no service.
When the mobile phone signal power strength TD is between 1 and 2, judging that the network is normal; when the mobile phone signal power strength TD is between 3 and 4, judging that the mobile phone is in a weak network condition; when the mobile phone signal power strength TD meets 5, determining that no network exists; and directly outputting no after the judgment of the wireless network and the weak network is finished, namely judging that the Bluetooth key needs to use a wireless mode, and otherwise, outputting yes.
Secondly, when the signal power strength of the mobile phone is normal, the mobile phone terminal 1 will judge the TTFB (byte response time) index again, where TTFB is the time difference from the first byte requested by the client to the first byte of the received return data; if the TTFB is too large, the network delay is longer, and the TTFB can be used as the basis for judging the network state. Specifically, a client app of the mobile phone end 1 calls an H5 front end execution interface request, and H5 obtains a performance attribute under a window object in ajax request interception, where two fields are available under the attribute, that is, responseStart and navigationStart, and the calculation formula is as follows:
TTFB = responseStart - navigationStart
the set indexes are as follows:
1. TTFB < 5s network Normal
2. TTFB >5s weak network conditions
And when the TTFB is less than 5 seconds, judging that the network is normal and outputting yes, and when the TTFB is greater than 5 seconds, judging that the network is in a weak network mode and outputting no.
Finally, the network monitoring unit 11 can judge that the network is normal only after the output end is taken to two yes, and outputs hasNet to the Bluetooth key information request unit 12; otherwise, noNet is output to the local storage unit 13.
Specifically, the step 1) comprises the following steps:
step 1, 1) the mobile phone end 1 judges the network state according to the mobile phone signal power intensity, when the mobile phone end 1 judges that the network state is a normal network according to the mobile phone signal power intensity, the step 1 and the step 2 are executed, and when the mobile phone end 1 judges that the network state is a no-network or weak-network state according to the mobile phone signal power intensity, the step 1 and the step 4 are executed;
step 1, 2) the mobile phone end 1 judges the network state according to the byte response time, when the mobile phone end 1 judges that the network state is a normal network according to the byte response time, step 3) is executed, and when the mobile phone end 1 judges that the network state is a no-network or weak-network state according to the byte response time, steps 1 and 4 are executed;
step 1, 3) the mobile phone terminal 1 judges that the network state communicated with the cloud terminal 3 is a normal network, and executes step 2);
step 1, 4) the mobile phone end 1 judges that the network state communicated with the cloud end 3 is no network or weak network, and executes the step 3).
In this embodiment, in step 1, 1), when the signal power intensity of the mobile phone is from-50 db to-85 db, the mobile phone terminal 1 determines that the network state is a normal network according to the signal power intensity of the mobile phone; when the signal power intensity of the mobile phone is-86 db to-110 db, the mobile phone terminal 1 judges that the network state is a weak network state according to the signal power intensity of the mobile phone; when the signal power intensity of the mobile phone is less than-110 db, the mobile phone terminal 1 judges that the network state is a non-network state according to the signal power intensity of the mobile phone;
in steps 1 and 2), when the byte response time is less than 5s, the mobile phone terminal 1 judges that the network state is a normal network according to the byte response time, and when the byte response time is greater than or equal to 5s, the mobile phone terminal 1 judges that the network state is a weak network state according to the byte response time.
In this embodiment, in step 2), before the cloud 3 issues the bluetooth key information to the mobile phone terminal 1, the mobile phone terminal 1 first requests the encrypted bluetooth key information from the cloud 3, and the mobile phone terminal 1 simultaneously transmits the vehicle identification number, the user certificate, and the user unique account of the vehicle to the cloud 3.
In this embodiment, the mobile phone end 1 includes a network monitoring unit 11, a local storage unit 13, a bluetooth key information request unit 12 and a mobile phone bluetooth communication unit 14, and the vehicle end 2 includes a vehicle end bluetooth communication unit 21, an electronic controller unit 22, a vehicle control execution unit 23 and a state feedback unit 24;
in the step 1), the network monitoring unit 11 judges the network state when the mobile phone terminal 1 communicates with the cloud terminal 3;
in the step 2), the cloud 3 issues the bluetooth key information to the bluetooth key information request unit 12, and the bluetooth key information request unit 12 transmits the bluetooth key information to the mobile phone bluetooth communication unit 14 and then executes the step 4);
in step 3), the local storage unit 13 reads the internally stored bluetooth key information and transmits the information to the mobile phone bluetooth communication unit 14, and then step 4) is executed;
in the step 4), the mobile phone Bluetooth communication unit 14 sends Bluetooth key information to the vehicle-mounted Bluetooth communication unit;
in step 5), the vehicle-mounted bluetooth communication unit receives and verifies the bluetooth key information from the mobile phone bluetooth communication unit 14, and analyzes and transmits the bluetooth key information to the electronic controller unit 22 after the verification is passed, the electronic control unit outputs corresponding vehicle control execution to the vehicle control execution unit 23, the vehicle control execution unit 23 executes corresponding vehicle control operation and transmits the execution result of the vehicle control instruction to the state feedback unit 24, and the state feedback unit 24 further transmits the execution result information of the vehicle control instruction by the vehicle control execution unit 23 to the electronic controller unit 22.
An automobile adopts the Bluetooth-based short-range automobile control method.
Compared with the prior art, when the automobile is controlled by the Bluetooth key, when the communication between the mobile phone end 1 and the cloud end 3 is normal, the mobile phone end 1 is used for receiving the Bluetooth key information from the cloud end 3 and sending the Bluetooth key information to the automobile end 2, and when the communication between the mobile phone end 1 and the cloud end 3 is abnormal, namely when the mobile phone end 1 is in a no-network or weak-network state, the mobile phone end 1 reads the Bluetooth key information pre-stored in the automobile and directly sends the Bluetooth key information to the automobile end 2, so that the automobile can be normally controlled by the Bluetooth key no matter how the network signal of the mobile phone end 1 is, the use experience of the mobile phone Bluetooth key in a position with poor network environment such as a garage can be improved, and more convenience is brought to the automobile using of a user. When the invention judges the network state of the communication between the mobile phone end 1 and the cloud end 3, the judgment is carried out through the mobile phone signal power intensity and the byte response time together, when any one of the mobile phone signal power intensity and the byte response time does not meet the requirements of a normal network, the network monitoring unit 11 outputs a signal to the local storage unit 13, so that the local storage unit 13 outputs the Bluetooth key information to the mobile phone Bluetooth communication unit 14, only when the mobile phone signal power intensity and the byte response time simultaneously meet the requirements of the normal network, the network monitoring unit 11 outputs a signal to the Bluetooth key information request unit 12, at the moment, the cloud end 3 sends the Bluetooth key information to the Bluetooth key request unit, thereby ensuring the effective communication between the mobile phone end 1 and the cloud end 3, and timely adopting the Bluetooth key information cached locally to control the automobile when the communication between the mobile phone end 1 and the cloud end 3 can not meet the requirements, therefore, the vehicle using experience of the user in the poor network environment such as a garage is greatly improved. In the invention, the cloud 3 needs to send the encrypted Bluetooth key information to the cloud 3 by the mobile terminal 1 before sending the Bluetooth key information to the mobile terminal 1, and meanwhile, the mobile terminal 1 transmits the vehicle identification number, the user certificate and the unique user account number of the vehicle to the cloud 3, so that the use safety of the Bluetooth key can be ensured.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (10)
1. A short-range vehicle control system based on Bluetooth is characterized by comprising a mobile phone end (1), a vehicle end (2) and a cloud end (3);
the mobile phone end (1) is used for identifying a network state when the mobile phone end (1) is in communication with the cloud end (3), receiving Bluetooth key information from the cloud end (3) and transmitting the Bluetooth key information to the vehicle end (2) when the network state is a normal network, and transmitting the Bluetooth key information pre-stored in the mobile phone end (1) to the vehicle end (2) when the network state is a weak network or no network;
the vehicle end (2) is used for carrying out bidirectional authentication communication connection with the mobile phone end (1) so as to receive and verify the Bluetooth key information from the mobile phone end (1), and after the verification is passed, corresponding operation is carried out on the vehicle according to the received Bluetooth key information, and meanwhile, the execution result of the vehicle end (2) on the Bluetooth key information is fed back to the mobile phone end (1);
the cloud end (3) is in two-way communication connection with the mobile phone end (1) and used for issuing Bluetooth key information to the mobile phone end (1) when the network states of the mobile phone end (1) and the cloud end (3) are normal networks and receiving feedback information from the mobile phone end (1).
2. The bluetooth-based short-range vehicle control system according to claim 1, characterized in that the mobile phone terminal (1) comprises a network monitoring unit (11), a local storage unit (13), a bluetooth key information request unit (12) and a mobile phone bluetooth communication unit (14);
the output end of the network monitoring unit (11) is in communication connection with the input end of the local storage unit (13) and the input end of the Bluetooth key information request unit (12) at the same time, and is used for monitoring the network state when the mobile phone end (1) is in communication with the cloud end (3), outputting a signal to the Bluetooth key information request unit (12) when the network state is a normal network, and outputting a signal to the local storage unit (13) when the network state is a no network or a weak network;
the output end of the local storage unit (13) is in communication connection with the input end of the mobile phone Bluetooth communication unit (14) and is used for storing Bluetooth key information and outputting the stored Bluetooth key information to the mobile phone Bluetooth communication unit (14) when no network or a weak network exists;
the Bluetooth key information request unit (12) is in bidirectional communication connection with the cloud end (3) and used for receiving Bluetooth key information from the cloud end (3) in a normal network, and the output end of the Bluetooth key information request unit (12) is also in communication connection with the input end of the mobile phone Bluetooth communication unit (14) so as to transmit the received Bluetooth key information from the cloud end (3) to the mobile phone Bluetooth communication unit (14);
the mobile phone Bluetooth communication unit (14) is in bidirectional authentication communication connection with the vehicle end (2) so as to transmit Bluetooth key information to the vehicle end (2) and receive an execution result of the vehicle end (2) on the Bluetooth key information.
3. The bluetooth based short range vehicle control system according to claim 2, characterized in that the vehicle end (2) comprises a vehicle end bluetooth communication unit (21), an electronic controller unit (22), a vehicle control execution unit (23) and a state feedback unit (24);
the vehicle-end Bluetooth communication unit (21) is in bidirectional authentication communication connection with the mobile phone Bluetooth communication unit (14), the output end of the vehicle-end Bluetooth communication unit (21) is also in communication connection with the input end of the electronic controller unit (22) so as to receive and verify Bluetooth key information from the mobile phone Bluetooth communication unit (14), analyze and transmit the Bluetooth key information to the electronic controller unit (22) after the verification is passed, and simultaneously feed back the execution result of the vehicle-end (2) on the Bluetooth key information to the mobile phone Bluetooth communication unit (14);
the output end of the electronic controller unit (22) is in communication connection with the input end of the vehicle control execution unit (23) and is used for converting the received Bluetooth key information into a corresponding vehicle control instruction and transmitting the vehicle control instruction to the vehicle control execution unit (23);
the output end of the vehicle control execution unit (23) is in communication connection with the input end of the state feedback unit (24), and is used for executing corresponding vehicle control operation according to the vehicle control instruction transmitted by the electronic controller unit (22) and transmitting the execution result of the vehicle control instruction to the state feedback unit (24);
the output end of the state feedback unit (24) is in communication connection with the input end of the electronic controller unit (22) and is used for transmitting the received execution result information of the vehicle control instruction executed by the vehicle control execution unit (23) to the electronic controller unit (22).
4. A bluetooth-based short-range vehicle control method, characterized in that the bluetooth-based short-range vehicle control system of claim 1 is used, comprising the steps of:
step 1), the mobile phone end (1) judges the network state when communicating with the cloud end (3), executes step 2 when the network state is a normal network, and executes step 3 when the network state is a no-network or weak-network state;
step 2), the cloud (3) issues Bluetooth key information to the mobile phone end (1) and then executes step 4);
step 3), the mobile phone end (1) reads the Bluetooth key information pre-stored in the mobile phone end and then executes step 4);
step 4), the mobile phone end (1) sends Bluetooth key information to the vehicle end (2);
and step 5), the vehicle end (2) receives and verifies the Bluetooth key information from the mobile phone end (1), and performs corresponding operation on the vehicle according to the received Bluetooth key information after the verification is passed, and simultaneously feeds back an execution result of the vehicle end (2) on the Bluetooth key information to the mobile phone end (1).
5. The Bluetooth-based short-range vehicle control method according to claim 4, wherein in step 1), the mobile phone end (1) determines the network status when the mobile phone end (1) communicates with the cloud end (3) according to the mobile phone signal power strength and the byte response time.
6. The bluetooth-based short-range vehicle control method according to claim 5, wherein the step 1) comprises the steps of:
step 1, 1) the mobile phone end (1) judges the network state according to the mobile phone signal power intensity, when the mobile phone end (1) judges the network state to be a normal network according to the mobile phone signal power intensity, the step 1 and the step 2 are executed, and when the mobile phone end (1) judges the network state to be a no-network or weak-network state according to the mobile phone signal power intensity, the step 1 and the step 4 are executed;
step 1, step 2) the mobile phone end (1) judges the network state according to the byte response time, when the mobile phone end (1) judges the network state to be a normal network according to the byte response time, step 3 is executed, and when the mobile phone end (1) judges the network state to be a no-network or weak-network state according to the byte response time, steps 1 and 4 are executed;
step 1, 3) the mobile phone end (1) judges that the network state communicated with the cloud end (3) is a normal network, and executes step 2);
and 1, 4) the mobile phone end (1) judges whether the network state communicated with the cloud end (3) is a wireless network or a weak network, and executes the step 3).
7. The short-range vehicle control method based on Bluetooth according to claim 6, wherein in step 1, 1), when the signal power intensity of the mobile phone is-50 db to-85 db, the mobile phone end (1) judges the network state to be a normal network according to the signal power intensity of the mobile phone; when the signal power intensity of the mobile phone is-86 db to-110 db, the mobile phone end (1) judges that the network state is a weak network state according to the signal power intensity of the mobile phone; when the signal power intensity of the mobile phone is less than-110 db, the mobile phone end (1) judges that the network state is a network-free state according to the signal power intensity of the mobile phone;
in the steps 1 and 2), when the byte response time is less than 5s, the mobile phone end (1) judges that the network state is a normal network according to the byte response time, and when the byte response time is more than or equal to 5s, the mobile phone end (1) judges that the network state is a weak network state according to the byte response time.
8. The Bluetooth-based short-range vehicle control method according to claim 4, wherein in step 2), before the cloud end (3) issues the Bluetooth key information to the mobile phone end (1), the mobile phone end (1) requests the encrypted Bluetooth key information from the cloud end (3), and the mobile phone end (1) simultaneously transmits the vehicle identification number, the user credential and the user unique account number of the vehicle to the cloud end (3).
9. The Bluetooth-based short-range vehicle control method according to claim 4, wherein the mobile phone end (1) comprises a network monitoring unit (11), a local storage unit (13), a Bluetooth key information request unit (12) and a mobile phone Bluetooth communication unit (14), and the vehicle end (2) comprises a vehicle end Bluetooth communication unit (21), an electronic controller unit (22), a vehicle control execution unit (23) and a state feedback unit (24);
in the step 1), the network monitoring unit (11) judges the network state when the mobile phone end (1) is communicated with the cloud end (3);
in the step 2), the cloud (3) issues Bluetooth key information to the Bluetooth key information request unit (12), and the Bluetooth key information request unit (12) transmits the Bluetooth key information to the mobile phone Bluetooth communication unit (14) and then executes the step 4);
in the step 3), the local storage unit (13) reads the internally stored Bluetooth key information and transmits the information to the mobile phone Bluetooth communication unit (14) to execute the step 4);
in the step 4), the mobile phone Bluetooth communication unit (14) sends Bluetooth key information to the vehicle-mounted Bluetooth communication unit;
in the step 5), the vehicle-mounted bluetooth communication unit receives and verifies bluetooth key information from the mobile phone bluetooth communication unit (14), and analyzes and transmits the bluetooth key information to the electronic controller unit (22) after the verification is passed, the electronic controller unit outputs corresponding vehicle control execution to the vehicle control execution unit (23), the vehicle control execution unit (23) executes corresponding vehicle control operation and transmits an execution result of a vehicle control instruction to the state feedback unit (24), and the state feedback unit (24) further transmits the execution result information of the vehicle control instruction, executed by the vehicle control execution unit (23), to the electronic controller unit (22).
10. A vehicle, characterized in that a bluetooth based short range vehicle control method according to any one of claims 4 to 9 is used.
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