CN205334222U - Car ECU information monitoring system based on intelligent mobile device - Google Patents

Abstract

The utility model provides a car ECU information monitoring system based on intelligent mobile device, relates to vehicle monitoring technical field, and that solve is the technical problem who monitors the car operating mode. This system includes on -vehicle ECU, bluetooth car kit module, on -vehicle encryption and decryption module, mobile terminal, on -vehicle ECU passes through SPI bus and the interconnection of on -vehicle encryption and decryption module, data bus and the interconnection of bluetooth car kit module are passed through to on -vehicle encryption and decryption module, the built -in organic microprocessor of carrying of mobile terminal, machine carry bluetooth module, the machine carries the encryption and decryption module, the machine carries microprocessor and passes through data bus and machine year encryption and decryption module interconnection, the machine carries the encryption and decryption module and passes through data bus and machine year bluetooth module interconnection, the machine carries bluetooth module and passes through bluetooth communication mode and the interconnection of on -vehicle bluetooth module. The system provided by the utility model, be applicable to control automobilism operating mode.

Description

Automobile ECU information monitoring system based on Intelligent mobile equipment

Technical field

This utility model relates to automobile monitoring technology, particularly relates to the technology of a kind of automobile ECU information monitoring system based on Intelligent mobile equipment。

Background technology

Vehicle-mounted ECU (ElectronicControlUnit, electronic control unit), also known as " car running computer ", " vehicle-mounted computer " etc., it it is then automobile specified microcomputerized controller from purposes, it is the same with common computer, is made up of microprocessor (CPU), memorizer (ROM, RAM), input/output interface (I/O), analog-digital converter (A/D) and the large scale integrated circuit such as shaping, driving。Can be obtained the information of the vehicle routine techniques state aspects such as the distance travelled of vehicle, speed, oil consumption, water temperature by vehicle-mounted ECU, safety information mainly includes the information relevant with vehicle safety enforcement such as temperature in tire pressure, tire, air bag state, front-and-rear vehicle distance。

The mode of existing acquisition vehicle-mounted ECU data has following several:

1) for supporting the vehicle of ISO15301-5OBD2 standard agreement, it is possible to read out all of information in vehicle-mounted ECU by OBD interface；Different automobile types OBD interface position is different, and new RAV4, the OBD interface such as a vapour Toyota is close to the back side of interior trim baffle plate, if installing the equipment of reading information, it will affect driving safety；Analogue exists in many moneys vehicle such as the bright ease of Shanghai Volkswagen, Toyota of Guangzhou Automobile Workshop Accord, and equipment is installed not only affects driving safety, OBD interface also can be caused to read data inaccurate。

2) obtaining data by CAN, required signal data section is read and preserves by special automobile CAN-bus equipment (USBCAN-IIPro, USBCAN-OBD etc.) by which, and use is analyzed software and carried out data sorting out parsing by expert engineer；Vehicle-mounted ECU data are read, it is necessary to expert engineer and equipment could realize, and the time of data parsing is longer by this kind of mode。

Utility model content

For the defect existed in above-mentioned prior art, technical problem to be solved in the utility model is to provide a kind of automobile ECU information monitoring system based on Intelligent mobile equipment obtaining vehicle behavior data that can be convenient, safe。

In order to solve above-mentioned technical problem, a kind of automobile ECU information monitoring system based on Intelligent mobile equipment provided by the utility model, including vehicle-mounted ECU, it is characterised in that: also include on-vehicle Bluetooth module, vehicle-mounted Encryption Decryption module, mobile terminal；

Described vehicle-mounted ECU is by spi bus and the interconnection of vehicle-mounted Encryption Decryption module, and described vehicle-mounted Encryption Decryption module is by data/address bus and the interconnection of on-vehicle Bluetooth module；

Described mobile terminal is built-in with airborne microprocessor, airborne bluetooth module, airborne Encryption Decryption module,

Described airborne microprocessor is by data/address bus and the interconnection of airborne Encryption Decryption module, and described airborne Encryption Decryption module is by data/address bus and the interconnection of airborne bluetooth module, and described airborne bluetooth module is by Blue-tooth communication method and the interconnection of on-vehicle Bluetooth module。

Further, described mobile terminal is mobile phone, panel computer or notebook computer。

Further, each vehicle-mounted Encryption Decryption module, airborne bluetooth module are each equipped with a chaotic key generation module for generating chaotic key；

Described chaotic key generation module includes memorizer, depositor, the first XOR gate, the second XOR gate, left shifter；

Described memorizer, depositor, left shifter are respectively provided with 128 bit data ports, and described first XOR gate, the second XOR gate are respectively provided with 64 bit data ports；

128 bit data ports of described memorizer are port interconnected with 128 bit data of depositor, 64 bit data ports of described first XOR gate are port interconnected with high 64 bit data of depositor, and 64 bit data ports of described second XOR gate are port interconnected with low 64 bit data of depositor；

The low 64 bit data ports of described left shifter and 64 bit data of the second XOR gate are port interconnected, 128 bit data ports of left shifter are port interconnected with 128 bit data of depositor, and the high 64 bit data ports of left shifter constitute the key output port of chaotic key generation module；

The key output port of the FPDP of vehicle-mounted Encryption Decryption module and its chaotic key generation module configured interconnects, and the key output port of the FPDP of airborne bluetooth module and its chaotic key generation module configured interconnects。

The automobile ECU information monitoring system based on Intelligent mobile equipment that this utility model provides, utilize Blue-tooth communication method that the vehicle behavior data of vehicle-mounted ECU collection are passed to mobile terminal, this information acquiring pattern need not by ODB interface, without influence on driving safety, and data message is transmitted after being encrypted by Encryption Decryption module, transmission security is also higher；Further, mobile terminal can adopt existing mobile phone, panel computer or notebook computer, can reduce system cost；Further, adopt chaotic key generation module to generate chaotic key, can carry out improving data transmission security。

Accompanying drawing explanation

Fig. 1 is the structural representation of the automobile ECU information monitoring system based on Intelligent mobile equipment of this utility model embodiment；

Fig. 2 is the structural representation based on the chaotic key generation module in the automobile ECU information monitoring system of Intelligent mobile equipment of this utility model embodiment。

Detailed description of the invention

Illustrate embodiment of the present utility model is described in further detail below in conjunction with accompanying drawing; but the present embodiment is not limited to this utility model; every employing analog structure of the present utility model and similar change thereof; all should listing protection domain of the present utility model in, the pause mark in this utility model all represents the relation of sum。

As it is shown in figure 1, a kind of automobile ECU information monitoring system based on Intelligent mobile equipment that this utility model embodiment provides, including vehicle-mounted ECU, it is characterised in that: also include on-vehicle Bluetooth module, vehicle-mounted Encryption Decryption module, mobile terminal；

Described vehicle-mounted ECU passes through SPI(Serial Peripheral Interface (SPI)) interconnection of bus and vehicle-mounted Encryption Decryption module, described vehicle-mounted Encryption Decryption module is by data/address bus and the interconnection of on-vehicle Bluetooth module；

Described mobile terminal is built-in with airborne microprocessor, airborne bluetooth module, airborne Encryption Decryption module,

Described airborne microprocessor is by data/address bus and the interconnection of airborne Encryption Decryption module, and described airborne Encryption Decryption module is by data/address bus and the interconnection of airborne bluetooth module, and described airborne bluetooth module is by Blue-tooth communication method and the interconnection of on-vehicle Bluetooth module。

In this utility model embodiment, described mobile terminal is mobile phone, panel computer or notebook computer。

In this utility model embodiment, described vehicle-mounted Encryption Decryption module, airborne Encryption Decryption module are prior art, vehicle-mounted Encryption Decryption module, airborne Encryption Decryption module can adopt micro-chip processor to realize, softdog conventional on market can also be adopted, it would however also be possible to employ logic gates realizes。

In this utility model embodiment, what described on-vehicle Bluetooth module, airborne bluetooth module adopted is CC2540F256 chip。

The operation principle of this utility model embodiment is as follows:

When mobile terminal needs to obtain vehicle behavior data, send vehicle behavior by airborne microprocessor and obtain instruction, this instruction is by after the encryption of airborne Encryption Decryption module, it is sent to on-vehicle Bluetooth module again through airborne bluetooth module, again by the complete vehicle-mounted Encryption Decryption module of on-vehicle Bluetooth module forwards, vehicle-mounted Encryption Decryption module relay to vehicle-mounted ECU after deciphering；

Vehicle-mounted ECU receives after the vehicle behavior acquisition instruction of mobile terminal, gather all kinds of floor datas of automobile, and send vehicle-mounted Encryption Decryption module to by spi bus, the data that vehicle-mounted ECU is uploaded by vehicle-mounted Encryption Decryption module are sent to the airborne bluetooth module of mobile terminal by on-vehicle Bluetooth module after being encrypted, data from on-vehicle Bluetooth module are transmitted to airborne Encryption Decryption module by the airborne bluetooth module of mobile terminal, airborne microprocessor it is then forwarded to by airborne Encryption Decryption module after being decrypted, the display screen that after these data being carried out respective handling by airborne microprocessor again, output carries to mobile terminal carries out data display。

In this utility model embodiment, the data form of Bluetooth communication is:

Origin identification+BYTE1+BYTE2+BYTE3+BYTE4+BYTE5+ terminates mark；

Wherein, beginning flag is s, and end mark is e, BYTE1 is ID numbering, and BYTE2 is vehicle tire pressure, and BYTE3 is automotive temp, and BYTE4 is the on-vehicle battery residue use time, and BYTE5 is on-vehicle battery state (whether can use), and BYTE6 is check bit。

As in figure 2 it is shown, in this utility model embodiment, each vehicle-mounted Encryption Decryption module, airborne bluetooth module are each equipped with a chaotic key generation module for generating chaotic key；

Described chaotic key generation module includes memorizer, depositor, the first XOR gate, the second XOR gate, left shifter；

Described memorizer, depositor, left shifter are respectively provided with 128 bit data ports, and described first XOR gate, the second XOR gate are respectively provided with 64 bit data ports；

128 bit data ports of described memorizer are port interconnected with 128 bit data of depositor, 64 bit data ports of described first XOR gate are port interconnected with high 64 bit data of depositor, and 64 bit data ports of described second XOR gate are port interconnected with low 64 bit data of depositor；

The low 64 bit data ports of described left shifter and 64 bit data of the second XOR gate are port interconnected, 128 bit data ports of left shifter are port interconnected with 128 bit data of depositor, and the high 64 bit data ports of left shifter constitute the key output port of chaotic key generation module；

The key output port of the FPDP of vehicle-mounted Encryption Decryption module and its chaotic key generation module configured interconnects, and the key output port of the FPDP of airborne bluetooth module and its chaotic key generation module configured interconnects。

In this utility model embodiment, described vehicle-mounted Encryption Decryption module, airborne Encryption Decryption module can utilize the chaotic key that chaotic key generation module generates that the data of transmission are encrypted, the principle of chaotic key is the aperiodic stream secrete key that the seed key by easily remembering produces endless, then with this stream cipher to plain text encryption, thus changing phase isolog cycle produced problem in tradition encrypted private key, can indirectly implement the key of " one-time pad ", finally make ciphertext intangibility。

The operation principle generating chaotic key of chaotic key generation module is as follows:

Deposit 128 primary keys in memory in advance, this primary key is sent to depositor and starts chaos, depositor is sent to the first XOR gate by high 64 therein again, and it is sent to the second XOR gate by low 64 therein, again by the first XOR gate, second XOR gate carries out XOR by high 64 of primary key with low 64 of primary key, XOR result is re-fed into the low 64 of left shifter, then left shifter is by paramount for low 64 lts 64, form 128 new keys, realize a chaos, then this new key is sent into depositor chaos again, chaos repeatedly (chaos number of times sets depending on real needs) forms final chaotic key afterwards and so forth, vehicle-mounted Encryption Decryption module or airborne Encryption Decryption module is sent into for high 64 in final chaotic key as real communication key。

Claims (3)

1. based on an automobile ECU information monitoring system for Intelligent mobile equipment, including vehicle-mounted ECU, it is characterised in that: also include on-vehicle Bluetooth module, vehicle-mounted Encryption Decryption module, mobile terminal；

Described vehicle-mounted ECU is by spi bus and the interconnection of vehicle-mounted Encryption Decryption module, and described vehicle-mounted Encryption Decryption module is by data/address bus and the interconnection of on-vehicle Bluetooth module；

Described mobile terminal is built-in with airborne microprocessor, airborne bluetooth module, airborne Encryption Decryption module,

Described airborne microprocessor is by data/address bus and the interconnection of airborne Encryption Decryption module, and described airborne Encryption Decryption module is by data/address bus and the interconnection of airborne bluetooth module, and described airborne bluetooth module is by Blue-tooth communication method and the interconnection of on-vehicle Bluetooth module。

2. the automobile ECU information monitoring system based on Intelligent mobile equipment according to claim 1, it is characterised in that: described mobile terminal is mobile phone, panel computer or notebook computer。

3. the automobile ECU information monitoring system based on Intelligent mobile equipment according to claim 1, it is characterised in that: each vehicle-mounted Encryption Decryption module, airborne bluetooth module are each equipped with a chaotic key generation module for generating chaotic key；

Described chaotic key generation module includes memorizer, depositor, the first XOR gate, the second XOR gate, left shifter；

Described memorizer, depositor, left shifter are respectively provided with 128 bit data ports, and described first XOR gate, the second XOR gate are respectively provided with 64 bit data ports；

128 bit data ports of described memorizer are port interconnected with 128 bit data of depositor, 64 bit data ports of described first XOR gate are port interconnected with high 64 bit data of depositor, and 64 bit data ports of described second XOR gate are port interconnected with low 64 bit data of depositor；

The low 64 bit data ports of described left shifter and 64 bit data of the second XOR gate are port interconnected, 128 bit data ports of left shifter are port interconnected with 128 bit data of depositor, and the high 64 bit data ports of left shifter constitute the key output port of chaotic key generation module；

The key output port of the FPDP of vehicle-mounted Encryption Decryption module and its chaotic key generation module configured interconnects, and the key output port of the FPDP of airborne bluetooth module and its chaotic key generation module configured interconnects。