CN203386035U

CN203386035U - Vehicle acquisition card

Info

Publication number: CN203386035U
Application number: CN201320461675.7U
Authority: CN
Inventors: 薛义飞; 鲁文辉
Original assignee: SHANXI LANGSI TECHNOLOGY Co Ltd
Current assignee: SHANXI LANGSI TECHNOLOGY Co Ltd
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2014-01-08
Anticipated expiration: 2023-07-31

Abstract

The utility model discloses a vehicle acquisition card, and relates to the field of a driver test system. The vehicle acquisition card comprises a main control chip and an accessory circuit thereof, a power supply circuit, an external power supply circuit, an LCD chip, an optocoupler chip and an accessory circuit thereof, a CN2LCD circuit, a chip ULN2003, a chip U9 and a relay circuit, wherein the main control chip and the accessory circuit thereof are connected with the power supply circuit, the LCD chip, the CN2LCD circuit, the chip U9 and the relay circuit, the power supply circuit is connected with the externally power supply circuit, the chip U9 is connected with the optocoupler chip and the accessory circuit thereof, the CN2LCD circuit and the chip ULN2003, the chip ULN2003 is further connected with the LCD chip, and the LCD chip is further connected with the optocoupler chip and the accessory circuit thereof and the relay circuit. The vehicle acquisition card disclosed by the utility model has the advantages of low power consumption, stable performance and high work efficiency.

Description

The vehicle capture card

Technical field

The utility model relates to examination of driver system field, be specifically related to a kind of vehicle capture card.

Background technology

Along with rapid development of economy, the renewal of people's consumption idea, increasing car enters ordinary family, as in the case, be the safety of the unimpeded and traffic that ensures highway, nationally just progressively strengthen the management to road traffic.Simultaneously, along with vehicle fleet size increases severely, driver's number also will increase on year-on-year basis, so vehicle management department also must strengthen driver's theory and the examination of actual operational capacity.This is also to reduce one of road important prerequisite means violating the regulations.In examination of driver, if adopting original examination mode will bothersomely require great effort, can't meet the needs of present examination of driver. greatly develop the good chance of information industry just as country, infotech is introduced to the inexorable trend that has become era development in driver's examination. along with people increase the necessity of driving license, the personnel that enter oneself for the examination examination of driver also increase, and now a lot of places not as people's will have just appearred in traditional examination of driver.

Old examination of driver system, be based on 51 single-chip microcomputers+X86 vehicle-mounted computer is the core exploitation more, wherein 51 singlechip technologies are outmoded, performance backward for this, more and more can't meet complicated examination surroundings needs although cheap.The PC platform development of the vehicle-mounted computer of X86 platform based on common, under vehicle driving-cycle, the inevitable shortcoming that the PC computer is had is amplified, as can't be adapted to hot environment, poor work stability, easily blue screen or system crash, abnormal power-down causes disk failure etc.

And the vehicle capture card of traditional examination of driver system also exists power consumption high, the defects such as unstable properties.

The utility model content

For the deficiency existed on prior art, the utility model purpose is to be to provide a kind of vehicle capture card, low in energy consumption, stable performance, high efficiency.

To achieve these goals, the utility model is to realize by the following technical solutions: the vehicle capture card, comprise main control chip and accessory circuit thereof, feed circuit, the external power supply circuit, the LCD chip, opto-coupler chip and accessory circuit thereof, the CN2LCD display circuit, chip ULN2003, chip U9 and relay circuit, main control chip and accessory circuit thereof respectively with feed circuit, the LCD chip, the CN2LCD display circuit is connected with relay circuit with chip U9, feed circuit are connected with the external power supply circuit, chip U9 respectively with opto-coupler chip and accessory circuit thereof, the CN2LCD display circuit, chip ULN2003 is connected, chip ULN2003 also is connected with the LCD chip, the LCD chip also is connected with relay circuit with opto-coupler chip and accessory circuit thereof.

Described feed circuit adopt power supply IC LT1117.

Described main control chip and accessory circuit 1 thereof adopt single-chip microcomputer LM3S1968.

Described chip ULN2003 (darlington array drives relay to realize the low-and high-frequency conversion) left end by resistance capacitance meet PHB1, PHA1, PB5 connects single-chip microcomputer LM3S1968 corresponding port, right-hand member is got involved the LCD corresponding port.

Relay K 1 in described relay circuit, K2 port access 5V voltage, through stabilivolt D4, D5, triode Q1, Q2 (S8050), 4.7K resistance access single-chip microcomputer LM3S1968, PC4, PC5 corresponding ports, right-hand member imports the LCD corresponding ports by RELAY1, RELAY2.

The beneficial effects of the utility model: adopt new LM3S1968 controller, 32, the 50MHz frequency of operation, based on the ARMV7 technological development.With respect to 51 single-chip microcomputers, performance improves more than 20 times; Adopt the 3.3V power supply, power-dissipation-reduced; The built-in house dog that support property is more stable, stability is better.

The accompanying drawing explanation

Describe the utility model in detail below in conjunction with the drawings and specific embodiments;

Fig. 1 is structured flowchart of the present utility model;

The circuit diagram that Fig. 2 is the utility model LM3S1968 chip;

The accessory circuit figure that Fig. 3 is main control chip of the present utility model and accessory circuit thereof;

The circuit diagram that Fig. 4 is feed circuit of the present utility model;

The circuit diagram that Fig. 5 is external power supply circuit of the present utility model;

The circuit diagram that Fig. 6 is the chip ULN2003 in the utility model;

The circuit diagram that Fig. 7 is chip U9 of the present utility model;

The circuit diagram that Fig. 8 is relay circuit of the present utility model.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.

With reference to Fig. 1-8, this embodiment is by the following technical solutions: the vehicle capture card, comprise main control chip and accessory circuit 1 thereof, feed circuit 2, external power supply circuit 3, LCD chip 4, opto-coupler chip and accessory circuit 5 thereof, CN2LCD display circuit 6, chip ULN20037, chip U98 and relay circuit 9, main control chip and accessory circuit 1 thereof respectively with feed circuit 2, LCD chip 4, CN2LCD display circuit 6 is connected with relay circuit 9 with chip U98, feed circuit 2 are connected with external power supply circuit 3, chip U98 respectively with opto-coupler chip and accessory circuit 5 thereof, CN2LCD display circuit 6, chip ULN20037 is connected, chip ULN20037 also is connected with LCD chip 4, LCD chip 4 also is connected with relay circuit 9 with opto-coupler chip and accessory circuit 5 thereof.

Main control chip in this embodiment and accessory circuit 1 thereof: single-chip microcomputer LM3S1968 comprises following characteristic as the main control chip of capture card: 32 RISC functions, internal storage, general purpose timer, ARM WatchDog Timer, synchronous serial interface, UART, ADC, analog comparator, PWM, QEI, GPIO etc.; Accessory circuit one end TDI, TMS, TCK, TDO, NTRST, connect the corresponding port of LM3S1968, the other end is external, for burning program; Feed circuit adopt power supply IC LT1117 to turn 3.3V by 5V.

External power supply POWER-BAT mono-tunnel of the external power supply circuit 3 of this embodiment turns first page 3 power supply IC through insurance F1, capacitor C P3, three end filter L1, CP4, voltage stabilizer U4, voltage stabilizing diode D3, inductance L 2, power transmission VDD5V.Another road connect capacitor C P9, CP10, CP11, CP12, CP13 then ground connection play pressure stabilization function; External the 3rd page of LCD corresponding port of AIN0, AIN1, then through R13, R15, C15, C16, then, through operational amplifier U5, then meet the corresponding port AD0 of single-chip microcomputer 1968, AD1.

The opto-coupler chip of this embodiment and accessory circuit 5 thereof, wherein, optocoupler U8, U10, U11, U12 ,U13Zuo road meet PG1, PG3, PA7, PG2 by resistance capacitance, PH2, PH0, PB6, PD1, PA4, PA3, PA2, PG0, PF1, PF4, PF2, CCP1, PF3, PH3, PH1, P65, PA6, PC7, PA5, PC6 port connect the corresponding port of single-chip microcomputer LM3S1968, and right-hand member is by the corresponding port of 1K resistance access LCD.

Chip ULN2003 in this embodiment (darlington array drives relay to realize the low-and high-frequency conversion) left end by resistance capacitance meet PHB1, PHA1, PB5 connects single-chip microcomputer LM3S1968 corresponding port, right-hand member is got involved the LCD corresponding port; CN2LCD display circuit 6 is used for showing accepts data, and port connects optocoupler and the corresponding output port of ULN2003, and chip U9SP3232EEY is as the transmitting-receiving port ，Zuo road access LM3S1968 corresponding ports of data, and right wing is got involved LCD and shown.

Relay K 1 in the relay circuit 9 of this embodiment, K2 port access 5V voltage, through stabilivolt D4, D5, triode Q1, Q2 (S8050), 4.7K resistance access single-chip microcomputer LM3S1968, PC4, PC5 corresponding ports, right-hand member imports the LCD corresponding ports by RELAY1, RELAY2.

This embodiment is low in energy consumption, stable performance, high efficiency.

Above demonstration and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. vehicle capture card, it is characterized in that, comprise main control chip and accessory circuit thereof (1), feed circuit (2), external power supply circuit (3), LCD chip (4), opto-coupler chip and accessory circuit thereof (5), CN2LCD display circuit (6), chip ULN2003 (7), chip U9 (8) and relay circuit (9), main control chip and accessory circuit thereof (1) respectively with feed circuit (2), LCD chip (4), CN2LCD display circuit (6) is connected with relay circuit (9) with chip U9 (8), feed circuit (2) are connected with external power supply circuit (3), chip U9 (8) respectively with opto-coupler chip and accessory circuit (5) thereof, CN2LCD display circuit (6), chip ULN2003 (7) is connected, chip ULN2003 (7) also is connected with LCD chip (4), LCD chip (4) also is connected with relay circuit (9) with opto-coupler chip and accessory circuit (5) thereof.

2. vehicle capture card according to claim 1, is characterized in that, described feed circuit (2) adopt power supply IC LT1117.

3. vehicle capture card according to claim 1, is characterized in that, described main control chip and accessory circuit thereof (1) adopt single-chip microcomputer LM3S1968.

4. vehicle capture card according to claim 1, is characterized in that, described chip ULN2003 (7) left end by resistance capacitance meet PHB1, PHA1, PB5 connects single-chip microcomputer LM3S1968 corresponding port, right-hand member is got involved LCD chip corresponding port.

5. vehicle capture card according to claim 1, it is characterized in that, relay K 1 in described relay circuit (9), K2 port access 5V voltage, through stabilivolt D4, D5, triode Q1, Q2,4.7K resistance access single-chip microcomputer LM3S1968, PC4, PC5 corresponding ports, right-hand member imports LCD chip corresponding ports by RELAY1, RELAY2.