CN2837934Y

CN2837934Y - Encrypt and decipher the automobile travel recorder of SAM key module and management

Info

Publication number: CN2837934Y
Application number: CN 200520062632
Authority: CN
Inventors: 骆澜涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-09
Filing date: 2005-08-09
Publication date: 2006-11-15
Anticipated expiration: 2015-08-09

Abstract

The utility model discloses a kind of automobile travel recorder of encrypting and deciphering SAM key module and management, comprise the registering instrument front panel, be provided with driver identification IC-card socket, embedded printer, user's keyboard, display screen, communication interface in registering instrument front panel front; Be provided with input port, the switching value signal input detection of connection speed sensor and port, PORT COM, infrared communication port, radio-frequency communication port, display port, central microcontroller, data-carrier store, GPS locating module, GSM/GPRS/CDMA radio mobile communication module, power circuit, clock circuit, voice warning circuit, the printer port that is connected with printer, and driver identification IC-card port at the registering instrument circuit board, it is characterized in that: on the registering instrument circuit, be provided with the key authentication module made from SAM module or ESAM module or PSAM card.Because the special hardware configuration of SAM module makes it have extremely strong security, there is not the possibility of divulging a secret on the technological means.

Description

Encrypt and decipher the automobile travel recorder of SAM key module and management

Technical field

The utility model relates to a kind of automobile travel recorder of encrypting and deciphering SAM key module and management, belongs to automotive field.

Background technology

Present existing automobile travel recorder major function is to gather and calculate data such as the travel speed of automobile, display speed, mileage, real-time clock, and can send to host computer to the data of storage and other vehicle dwelling by means such as RS-232 mouth, mobile USB flash disks and carry out analyzing and processing; Simultaneously, host computer can also pass information of vehicles, driver information down and registering instrument is provided with.But this registering instrument does not have the function of data and information of vehicles not being encrypted the back transmission, and data have the possibility of artificially being changed in this data transmission procedure that just makes, data that collect thereby do not have security, antifalsification, legitimacy.The registering instrument that also has is provided with the simple digital password, but there is human factor in this password, and is also dangerous, can crack theoretically.Automobile travel recorder is a kind of management type product of traffic safety, also is a kind of means of Law Enforcement Technology, and its data will be in order to analysis, processing, and safety of data, reliability are extremely important.

The utility model content

The problems referred to above just that the utility model need solve, provide a kind of have registering instrument data and information of vehicles encrypted after the key type automobile travel recorder of transfer function again.It not only has real-time clock, the collection of driving time, record, memory function, the measurement of Vehicle Speed, record, memory function, the measurement of Vehicle Speed, record, memory function, the driver identity writing function, the data presentation function, data printout function, data communication function, according to the wheelpath of GPS, GSM/GPRS/CAMA location, face the function of control in real time, also have the function of data in the registering instrument being encrypted the back transmission, thereby guaranteed the security of data and communication process, make the data that collect genuine and believable.This point is particularly important to the popularization on a large scale of Tachographs.

Technology of the present utility model always reaches by following technical measures: a kind of automobile travel recorder of encrypting and deciphering SAM key module and management thereof, comprise the registering instrument front panel, be provided with driver identification IC-card socket, embedded printer module panel and printer in registering instrument front panel front and extract knob, infrared communication module, user's keyboard, display screen, USB interface and 232C communication interface out with four buttons; In the registering instrument housing, be provided with registering instrument circuit board, embedded printer engine, print enclosure; Be provided with the rate signal input port of connection speed sensor at the registering instrument circuit board, the input of eight way switch amount signals detects and port, the USB PORT COM and the RS-232 PORT COM that connect USB and 232C socket communication, the infrared communication port that connects the infrared communication module, the radio-frequency communication port, the display port that is connected with display, play the central microcontroller of center system control, the data-carrier store of storage data, the GPS locating module, GSM/GPRS/CDMA radio mobile communication module, power circuit, clock circuit, voice warning circuit, the printer port that is connected with printer, the IC-card port that is connected with the driver identification IC-card, it is characterized in that: be provided with the key authentication module made from SAM module or ESAM module or PSAM card on the registering instrument circuit, the input/output port of key authentication module and central microcontroller is electrically connected.

The utlity model has following advantage: because the key authentication module adopts SAM module or ESAM module or PSAM card, the special hardware configuration of SAM module makes it have extremely strong security, does not have the possibility of divulging a secret on the technological means.Key is issued by key issuing system, and the SAM module is installed when management system software and product are installed and used, even therefore the research staff of managerial personnel, manufacturer also can't know key, thereby security is very high.

Description of drawings

Fig. 1 is an assembling synoptic diagram of the present utility model;

Fig. 2 is an electrical principle block scheme of the present utility model;

Fig. 3 is an electrical schematic diagram of the present utility model.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is done further detailed being described as follows:

As Fig. 1, Fig. 2 and shown in Figure 3, a kind of automobile travel recorder of encrypting and deciphering SAM key module and management, comprise registering instrument front panel 1, be provided with driver identification IC-card socket 2, embedded printer module panel and printer in registering instrument front panel 1 front and extract knob 3, infrared communication module 4, user's keyboard 5, display screen 6, USB interface and 232C communication interface 7 out with four buttons; In registering instrument housing 10, be provided with registering instrument circuit board 8, embedded printer engine 9, print enclosure 11; Be provided with the rate signal input port 12 of connection speed sensor at registering instrument circuit board 8, the input of eight way switch amount signals detects and port one 3, the USB PORT COM 14 and the RS-232 PORT COM 15 that connect USB and 232C socket communication, the infrared communication port 16 that connects infrared communication module 4, radio-frequency communication port one 7, the display port one 8 that is connected with display, play the central microcontroller 19 of center system control, the data-carrier store 20 of storage data, GPS locating module 21, GSM/GPRS/CDMA radio mobile communication module 22, power circuit 23, clock circuit 24, voice warning circuit 25, the printer port 26 that is connected with printer, the IC-card port 27 that is connected with the driver identification IC-card, it is characterized in that: be provided with the key authentication module made from SAM module or ESAM module or PSAM card 28 on the registering instrument circuit, key authentication module 28 is electrically connected with the input/output port of central microcontroller 19.In Fig. 3 embodiment, microprocessor matching management software can be finished following function: identification and record driver identity, and whether IC-card driver identity code, this device can be discerned institute's inserted IC card automatically is effective card; Record shows storage or behavior inquiries such as inquiry fatigue driving record, furious driving record; Can the scene directly print hypervelocity, fatigue driving record and driver affirmations of signing, as traffic police, punish the direct voucher of act of violating regulations; Adopt display display automobile travel speed, accumulative mileage and real-time time in real time, can respond user key-press and enter different menu interfaces, realize the respective queries function; Preceding 20 seconds real-time speed data of parking of automobile can be write down, and, the analysis of accident suspicious points can be carried out with the frequency record of the per 0.2 second data speed data in preceding 20 seconds of stopping for ten times; With the key of depositing in the encrypting module needs are transmitted the data that receive and carry out encryption and decryption; Can select serial ports, infrared, wireless, any communication form of USB, both host computer directly can have been linked to each other with registering instrument and carry out data acquisition, also can be with handheld device by data in infrared or the wireless mode acquisition and recording instrument, can also pass through data in the USB flash disk transfer registering instrument, thereby greatly facilitate management; Use the GPS location, record that can wheelpath uses, and uses the GSM/GPRS/CDMA communication module, can realize the real-time monitoring of the situation of driving a vehicle; This device utilizes the automotive interior power work, and clock module is by registering instrument internal cell powered operation, even stop and outage, data can not lost yet; Utilize supporting computer management system and software to position analysis to the safe operation situation of vehicle.The invention will be further described below in conjunction with Fig. 3: speed pickup meets microprocessor U0 after interface J2 and photoelectrical coupler U1 and schmitt trigger shaping, the counting mouth, per 0.2 second timing microprocessor device produces once and interrupts, and microcontroller is gathered a speed data.Other eight way switch amount links to each other with microprocessor by J3, and microprocessor can write down the variation of these switching values, and real time clock circuit U2 produces real-time clock; Display U3 can show automobile driving speed and real-time time in the driving process in real time, and can respond user key-press and show menus at different levels, can adjust display brightness and backlight by adjustable resistance R1 and R2; U4 is the registering instrument Data Buffer Memory, large capacity data memory U5 is both as sensor speed-buffering district and information data buffer zone, order is deposited corporate identify, vehicle identity information, registering instrument ID and first installed date, vehicle characteristics coefficient, driver's table data in the information data buffer zone, deposits the real-time clock data again, mileage first address in nearest two days, nearest 360 hours accumulative mileage data addresses, driver tired driving table data; U6 and triode Q1, Q2, light emitting diode D1 form infrared transmission/accept module, and U6 links to each other with microcontroller RXD, are responsible for the reception of infrared data, and Q1, Q2, D1 are responsible for the transmission of infrared data; U7 is responsible for level conversion, and U8 is the RS-232 communication interface; U9 is the printer module interface, and printer can be according to the data of standard GB/T19056-2003 prescribed form output record instrument record; U10 and JUSB form the USB flash disk communication module, and wherein U10 is a USB module master controller, and JUSB is USB module and external apparatus interface; U11 is the SAM key module, deposit the key that encryption and decryption is used in this module, and do not have the key export function, when communication begins, microprocessor starts this module, with deposit in the storer the data secret key encryption, become transmission again after the ciphertext, guaranteed safety of data, made the data that collect genuine and believable; U7 is IC-card and interface circuit, its clock line and data line respectively with microcontroller P ₁₀And P ₁₁Link to each other, data in driver's card can be read in the registering instrument and with legal code relatively, have only legal card could start registering instrument work; U13 is the key response circuit; U14 is the GPS module, provides locator data by the GPS module, and locator data and data thereof can transmit data by administrative center by the GSM/GAMA module, to realize the real-time monitoring of vehicle.Remaining circuit is mainly used in the interface of forming microprocessor and related device among Fig. 3, realizes relevant circuit logic.The course of work of installing and using of the present utility model is: administrative authority is responsible for the work that is provided with registering instrument of writing of code in the driver identity identification IC-card by management system and software, the installation department of appointment is responsible for the importing of encryption key in the registering instrument by key management department, and administrative authority is installed in the registering instrument that sets on the automobile and uses.During registering instrument work, need checking driver's identity earlier, after being proved to be successful, registering instrument collection and storage, and the real-time speed that display automobile travels on display screen, mileage and clock, when keyboard had key to be pressed, display screen showed different related interfaces.Can carry out data acquisition during parking, microprocessor is encrypted the data of needs transmission with key, restarts communication module and outside collecting device carries out communication.Key module of the present utility model adopts SAM module or ESAM module or PSAM card, because the special hardware configuration of SAM module makes it have extremely strong security, and because the SAM module has oneself CPU and operating system, therefore can before production, carry out the work of initialization and installation key, the registering instrument microcontroller is sent the data that collect into the SAM module, carry out DES by the SAM module with key, the cryptographic calculation of RSA scheduling algorithm or closely separate computing, encryption key is corresponding with decruption key, ciphered data is necessary for corresponding decruption key and could deciphers, the result is passed out to transmission data buffer, key does not occur in the computing of all outside module, can not read; There is not the possibility of divulging a secret on the technological means.Key is issued by key issuing system, and the SAM module is installed when management system software and product are installed and used, even therefore the research staff of managerial personnel, manufacturer also can't know key.The method of this encryption and decryption and enciphering and deciphering algorithm have been widely used in financial sector and military equipment, reliability, security are extensively approved, crack with the method for exhaustion even if gather present large computer system, also will move continuously more than 10 years, thereby security is very high.

Claims

1. encrypt and decipher the automobile travel recorder that the SAM key module is managed for one kind, comprise registering instrument front panel (1), be provided with driver identification IC-card socket (2), embedded printer module panel and printer in registering instrument front panel (1) front and extract knob (3), infrared communication module (4), user's keyboard (5), display screen (6), USB interface and 232C communication interface (7) out with four buttons; In registering instrument housing (10), be provided with registering instrument circuit board (8), embedded printer engine (9), print enclosure (11); Be provided with the rate signal input port (12) of connection speed sensor at registering instrument circuit board (8), the input of eight way switch amount signals detects and port (13), the USB PORT COM (14) and the RS-232 PORT COM (15) that connect USB and 232C socket communication, the infrared communication port (16) that connects infrared communication module (4), radio-frequency communication port (17), the display port (18) that is connected with display, play the central microcontroller (19) of center system control, the data-carrier store (20) of storage data, GPS locating module (21), GSM/GPRS/CDMA radio mobile communication module (22), power circuit (23), clock circuit (24), voice warning circuit (25), the printer port that is connected with printer (26), the IC-card port (27) that is connected with the driver identification IC-card, it is characterized in that: be provided with the key authentication module made from SAM module or ESAM module or PSAM card (28) on the registering instrument circuit, key authentication module (28) is electrically connected with the input/output port of central microcontroller (19).