CN202535383U - Automobile and vehicle-mounted navigation bridge connection communication apparatus thereof - Google Patents

Abstract

The utility model is suitable to the field of automobile control and provides an automobile and a vehicle-mounted navigation bridge connection communication apparatus thereof. In the utility model, through employing the vehicle-mounted navigation bridge connection communication apparatus comprising a data transmit-receive module and a central communication control module, data interaction and application platform sharing are realized between a vehicle-mounted navigator and a vehicle control system, and further function switching, complementation and compatibility are realized between the vehicle-mounted navigator and the vehicle control system, thereby resolving the problem that in the prior art, it is impossible to realize communication interaction between the vehicle-mounted navigator and the vehicle control system to realize function switching and complementation through an automobile bus technology.

Description

A kind of automobile and vehicle mounted guidance bridge communications device thereof

Technical field

The utility model belongs to field of automobile control, relates in particular to a kind of automobile and vehicle mounted guidance bridge communications device thereof.

Background technology

At present, along with the high speed development of electronic technology and in the extensive use of automotive field, the automotive electronics degree is increasingly high.Simultaneously, intricate day by day along with urban highway traffic, people need obtain road guide and locating information accurately when driving a car, and this just need install automatic navigator on automobile.

Yet; Existing back entrucking is carried navigator and is separated with the vehicle body complete network; Can cause onboard navigation system to separate fully like this with vehicle control system; Thereby cause the driver when automatic navigator is controled, need the operating state of manual adjustment vehicle control system so that automatic navigator and vehicle control system can be realized the function that the driver is required synchronously.For example; The driver wants to show through the display screen of automatic navigator the work state information of vehicle control system; Perhaps the driver is listening to through the audio player of built-in vehicle music and when broadcasting, needs to switch sound channel to listen to from the Voice Navigation report of automatic navigator etc.Therefore, prior art can not make automatic navigator and vehicle control system carry out communication alternately to realize that function is switched and complementation through the automobile bus technology.

The utility model content

The utility model provides a kind of vehicle mounted guidance bridge communications device, and being intended to solve existing in prior technology can't make automatic navigator and vehicle control system carry out communication alternately to realize that function is switched and complementary problem through the automobile bus technology.

The utility model is achieved in that a kind of vehicle mounted guidance bridge communications device, is connected with automatic navigator and automobile bus network, and said automobile bus network connects vehicle control system, and said vehicle mounted guidance bridge communications device comprises:

With the data transmit-receive module that the data that receive are carried out level conversion and sent, first communication terminal of said data transmit-receive module is connected with said automobile bus network;

To resolving from the data of said automatic navigator and the input of said data transmit-receive module and encoding and assemble the central communication control module that transmit the back, first communication ends of said central communication control module is connected with the communication terminal of said automatic navigator and second communication terminal of said data transmit-receive module respectively with the second communication end.

Another purpose of the utility model also is to provide a kind of automobile that comprises said vehicle mounted guidance bridge communications device.

In the utility model; The said vehicle mounted guidance bridge communications device that comprises said data transmit-receive module and said central communication control module through employing; Carry out data interaction and application platform between automatic navigator and the vehicle control system and share to be implemented in; And then make automatic navigator and vehicle control system can realize that function is switched, complementation and compatible, can't make automatic navigator and vehicle control system carry out communication through the automobile bus technology thereby solved existing in prior technology alternately to realize that function is switched and complementary problem.

Description of drawings

Fig. 1 is the modular structure figure of the vehicle mounted guidance bridge communications device that provides of the utility model first embodiment;

Fig. 2 is the exemplary circuit structure chart of the vehicle mounted guidance bridge communications device that provides of the utility model second embodiment;

Fig. 3 is the exemplary circuit structure chart of the vehicle mounted guidance bridge communications device that provides of the utility model the 3rd embodiment.

Embodiment

For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

In the utility model embodiment; The vehicle mounted guidance bridge communications device that comprises data transmit-receive module and central communication control module through employing; Carry out data interaction and application platform between automatic navigator and the vehicle control system and share to be implemented in, and then make automatic navigator and vehicle control system can realize that function is switched, complementation and compatible.

Be described in detail below in conjunction with the concrete realization of specific embodiment the utility model:

Embodiment one:

Fig. 1 shows the modular structure of the vehicle mounted guidance bridge communications device that the utility model embodiment provides, and for the ease of explanation, only shows the part relevant with the utility model embodiment, and details are as follows:

Vehicle mounted guidance bridge communications device 100 is connected with automatic navigator 200 and automobile bus network 300, and automobile bus network 300 connects vehicle control system 400, and this vehicle mounted guidance bridge communications device 100 comprises:

With the data transmit-receive module 101 that the data that receive are carried out level conversion and sent, first communication terminal of data transmit-receive module 101 is connected with automobile bus network 300.

To resolving from the data of automatic navigator 200 and data transmit-receive module 101 inputs and encoding and assemble the central communication control module 102 that transmit the back, first communication ends of central communication control module 102 is connected with the communication terminal of automatic navigator 200 and second communication terminal of data transmit-receive module 101 respectively with the second communication end.

Embodiment two:

Fig. 2 shows the exemplary circuit structure of the vehicle mounted guidance bridge communications device that the utility model embodiment provides, and for the ease of explanation, only shows the part relevant with the utility model embodiment, and details are as follows:

As the utility model one embodiment, data transmit-receive module 101 comprises:

82C250CAN transceiver U1, resistance R 1, resistance R 2, resistance R 3, capacitor C 1, capacitor C 2, capacitor C 3 and resistance R 4;

The high level CAN voltage I/O end CANH of 82C250CAN transceiver U1 is connected with first end of resistance R 1 and first end line of resistance R 2 respectively with low level CAN voltage I/O end CANL; First communication terminal of the common composition data transceiver module 101 of second end of second end of resistance R 1 and resistance R 2; Resistance R 3 is connected between second end of second end and resistance R 2 of resistance R 1; Capacitor C 1 is connected between second end and ground of resistance R 1; Capacitor C 2 also is connected between second end and ground of resistance R 2; Power end VCC and the earth terminal GND of 82C250CAN transceiver U1 connects respectively+5V DC power supply and ground, and capacitor C 3 is connected between the power end VCC and earth terminal GND of 82C250CAN transceiver U1, second communication terminal of the data sending terminal TXD of 82C250CAN transceiver U1 and the common composition data transceiver module 101 of data receiver RXD; The reference voltage end VREF sky of 82C250CAN transceiver U1 connects, and resistance R 4 is connected between the resistance input RS and ground of 82C250CAN transceiver U1.

As the utility model one embodiment, central communication control module 102 comprises:

STC12C5A56AD single-chip microcomputer U2, capacitor C 4, resistance R 5, capacitor C 5, capacitor C 6, crystal oscillator CRT1, resistance R 6, SJA1000 CAN controllers U3, resistance R 7, resistance R 8 and capacitor C 7;

Power end VCC and the earth terminal GND of STC12C5A56AD single-chip microcomputer U2 connects respectively+5V DC power supply and ground; Capacitor C 4 is connected between the power end VCC and earth terminal GND of STC12C5A56AD single-chip microcomputer U2; The input end of clock X1 of STC12C5A56AD single-chip microcomputer U2 is connected with first end of capacitor C 5 and first end of capacitor C 6 respectively with output terminal of clock X2; Crystal oscillator CRT1 is connected between the input end of clock X1 and output terminal of clock X2 of STC12C5A56AD single-chip microcomputer U2; Second end of the first termination capacitor C5 of resistance R 5; Second end of resistance R 5 is connected with second end and the ground of capacitor C 6 simultaneously; The data sending terminal TXD of STC12C5A56AD single-chip microcomputer U2 and data receiver RXD constitute first communication ends of central communication control module 102 jointly; First termination of resistance R 6+5V DC power supply; Interrupt signal end/INT of the second termination SJA1000 CAN controllers U3 of resistance R 6; The first address/data end AD0 to the, the eight address/data end AD7 of SJA1000 CAN controllers U3 are connected with the first I/O end P0.0 to the, the eight I/O end P0.7 of STC12C5A56AD single-chip microcomputer U2 respectively; The sheet of SJA1000 CAN controllers U3 select input/CS, mode signal end ALE/AS, data read/Enable Pin/RD/E, data write end/WR and reset terminal/RST reads end/RD/P3.7 with the 9th address/data end P2.0, address latch signal end ALE/P4.5, the external data of STC12C5A56AD single-chip microcomputer U2 respectively, external data writes end/WR/P3.6 and the tenth address/data end P2.3 is connected; The output terminal of clock CLKOUT sky of SJA1000 CAN controllers U3 connects; The first data sending terminal TX0 of SJA1000 CAN controllers U3 and the first data receiver RX0 constitute the second communication end of central communication control module 102 jointly; The second data sending terminal TX1 sky of SJA1000 CAN controllers U3 connects; The second data receiver RX1 of SJA1000 CAN controllers U3 is connected with first end of resistance R 7 and first end of resistance R 8 simultaneously; Second termination of resistance R 7+5V DC power supply; The second end ground connection of resistance R 8; The mode selection terminal MODE of SJA1000 CAN controllers U3, logic power end VDD1, comparator power end VDD2, driving power end VDD3 are connected to+the 5V DC power supply altogether; The earth terminal VSS1 of SJA1000 CAN controllers U3, comparator earth terminal VSS2 and the equal ground connection of driving earth terminal VSS3; Capacitor C 7 is connected between the mode selection terminal MODE and earth terminal VSS 1 of SJA1000 CAN controllers U3, and the oscillator input XTAL1 of SJA1000 CAN controllers U3 is connected with output terminal of clock X2 with the input end of clock X1 of STC12C5A56AD single-chip microcomputer U2 respectively with oscillator output end XTAL2.

As the utility model one embodiment, automobile bus network 300 is CAN (Controller Area Network) bus network.

Below in conjunction with operation principle vehicle mounted guidance bridge communications device is described further:

Each item work state information that shows vehicle when needs through the display screen of automatic navigator 200; Then the driver can give central communication control module 102 through automatic navigator 200 sending controling instructions; Data receiver RXD by STC12C5A56AD single-chip microcomputer U2 receives the laggard line data processing of this control command (assembling of resolving, encode; And being packaged into 400 ability identified information of vehicle control system bag) back sends to SJA1000 CAN controllers U3 from the first I/O end P0.0 to the, the eight I/O end P0.7 of STC12C5A56AD single-chip microcomputer U2; After carrying out the communications protocol conversion by SJA1000 CAN controllers U3 then; Control command is sent to 82C250CAN transceiver U1 with CAN standard communications protocol, and do to export automobile bus network 300 (CAN bus network) to transfer to vehicle control system 400 after the level conversion through 82C250CAN transceiver U1.

Vehicle control system 400 responds after the control command that receives from automatic navigator 200; To send back 82C250CAN transceiver U1 through automobile bus network 300 (CAN bus network) with the corresponding vehicle operation status data of control command; The vehicle operation status data is carried out after the level conversion being sent to through its data sending terminal TXD the first data receiver RX0 of SJA1000 CAN controllers U3 by 82C250CAN transceiver U1; By SJA1000 CAN controllers U3 the vehicle operation status data is converted to the parallel port signal and sends to STC12C5A56AD single-chip microcomputer U2 through its first address/data end AD0 to the eight address/data end AD7 subsequently; At last by STC12C5A56AD single-chip microcomputer U2 to the assembling of resolving and encode of this parallel port signal; And after being packaged into 200 ability identified information of automatic navigator bag; Data sending terminal TXD through STC12C5A56AD single-chip microcomputer U2 is transferred to automatic navigator 200 with packets of information, and shows the vehicle operation state information through automatic navigator 200.

And report the principle of the data processing carried out and transmission and above-mentioned consistent, so repeat no more for listening to navigation speech through the audio player of built-in vehicle.

Embodiment three:

Fig. 3 shows the exemplary circuit structure of the vehicle mounted guidance bridge communications device that the utility model embodiment provides, and for the ease of explanation, only shows the part relevant with the utility model embodiment, and details are as follows:

As the utility model one embodiment, data transmit-receive module 101 comprises:

TJA1020LIN transceiver U4, resistance R 9, diode D1, resistance R 10 and resistance R 11;

The external voltage adjustable side INH sky of TJA1020LIN transceiver U4 connects; The power end BAT of TJA1020LIN transceiver U4 connects+the 12V DC power supply; The anode of diode D1 and negative electrode connect the power end BAT of TJA1020LIN transceiver U4 and first end of resistance R 10 respectively; Second end of resistance R 10 is connected with the LIN bus I/O end LIN of TJA1020LIN transceiver U4 and first end of resistance R 11 simultaneously; Second end of resistance R 11 is first communication terminal of data transmit-receive module 101; The earth terminal GND ground connection of TJA1020LIN transceiver U4; Second communication terminal of the data receiver RXD of TJA1020LIN transceiver U4, dormancy control end NSLP and the common composition data transceiver module 101 of data sending terminal TXD, this locality of TJA1020LIN transceiver U4 is waken first end of input NWAKE connecting resistance R9 up, second termination of resistance R 9+12V DC power supply.

As the utility model one embodiment, central communication control module 102 comprises:

TMP86FS49 single-chip microcomputer U5, resistance R 12, resistance R 13, crystal oscillator CRT2, capacitor C 8, capacitor C 9, resistance R 14, resistance R 15, NPN type triode Q1, LED 1, LED 2, resistance R 16, resistance R 17 and resistance R 18;

The earth terminal XSS of TMP86FS49 single-chip microcomputer U5 connects equipotential ground; Resistance R 12 is connected between the earth terminal XSS and test signal end TEST of TMP86FS49 single-chip microcomputer U5; The input end of clock XIN of TMP86FS49 single-chip microcomputer U5 is connected with first end of crystal oscillator CRT2 and first end of capacitor C 8 simultaneously; First end of the output terminal of clock XOUT connecting resistance R13 of TMP86FS49 single-chip microcomputer U5; Second end of resistance R 13 is connected with second end of crystal oscillator CRT2 and first end of capacitor C 9 simultaneously; Second end of capacitor C 8 and second end of capacitor C 9 all connect equipotential ground; The power end VDD of TMP86FS49 single-chip microcomputer U5 connects+the 5V DC power supply; The reset terminal of TMP86FS49 single-chip microcomputer U5/RESET is connected with first end of resistance R 14 and the base stage of NPN type triode Q1 simultaneously; Second end of resistance R 14 connects simultaneously+first end of 5V DC power supply and resistance R 15; The collector electrode of the second termination NPN type triode Q1 of resistance R 15; The grounded emitter of NPN type triode Q1; First data receiver (BOOT/RXD1) P01 of TMP86FS49 single-chip microcomputer U5 and first data sending terminal [A4] (TXD1) P02 constitute first communication ends of central communication control module 102 jointly, and the first I/O end P45 (SO2) [D5] of TMP86FS49 single-chip microcomputer U5, the second data sending terminal P42 (TXD2) [D2] and the second data receiver P41 (RXD2) [D1] constitute the second communication end of central communication control module 102 jointly, and the first analog signal end P73 (AIN13) of TMP86FS49 single-chip microcomputer U5 is connected with the negative electrode of LED 1 and the negative electrode of LED 2 respectively with the second analog signal end P72 (AIN12); The anode of first end of resistance R 16 and first end of resistance R 17 difference sending and receiving optical diode LED1 and the anode of LED 2; Second end of resistance R 16 and second end of resistance R 17 all connect+the 5V DC power supply, resistance R 18 be connected in TMP86FS49 single-chip microcomputer U5 the 3rd analog signal end P70 (AIN10) and+the 5V power supply between, the analog power end AVDD of TMP86FS49 single-chip microcomputer U5 and analog reference voltage end VAREF all are connected with+5V DC power supply.

As the utility model one embodiment, automobile bus network 300 is LIN (Lccal Interconnect Network) bus network.

Below in conjunction with operation principle vehicle mounted guidance bridge communications device is described further:

Each item work state information that shows vehicle when needs through the display screen of automatic navigator 200; Then the driver can give central communication control module 102 through automatic navigator 200 sending controling instructions; By first data receiver (BOOT/RXD1) P01 of TMP86FS49 single-chip microcomputer U5 receive this control command go forward side by side line data handle (resolve, the coding assembling; And be packaged into 400 ability identified information of vehicle control system bag) and the communications protocol conversion after; Through its second data sending terminal P42 (TXD2) [D2] control command is sent to TJA1020LIN transceiver U4 with LIN standard communications protocol, and do to export automobile bus network 300 (LIN bus network) to transfer to vehicle control system 400 after the level conversion through TJA1020LIN transceiver U4.

Vehicle control system 400 responds after the control command that receives from automatic navigator 200; To send back TJA1020LIN transceiver U4 through automobile bus network 300 (LIN bus network) with the corresponding vehicle operation status data of control command; The vehicle operation status data is carried out after the level conversion being sent to through its data sending terminal TXD the second data receiver P41 (RXD2) [D1] of TMP86FS49 single-chip microcomputer U5 by TJA1020LIN transceiver U4; Subsequently by the TMP86FS49 single-chip microcomputer U5 vehicle operation status data is resolved and encoded assembling; And be packaged into 200 ability identified information of automatic navigator bag and be transferred to automatic navigator 200, and show the vehicle operation state informations through automatic navigator 200.

And report the principle of the data processing carried out and transmission and above-mentioned consistent, so repeat no more for listening to navigation speech through the audio player of built-in vehicle.

The utility model embodiment also provides a kind of automobile that comprises above-mentioned vehicle mounted guidance bridge communications device.

In the utility model embodiment; The vehicle mounted guidance bridge communications device that comprises data transmit-receive module and central communication control module through employing; Carry out data interaction and application platform between automatic navigator and the vehicle control system and share to be implemented in; And then make automatic navigator and vehicle control system can realize that function is switched, complementation and compatible, can't make automatic navigator and vehicle control system carry out communication through the automobile bus technology thereby solved existing in prior technology alternately to realize that function is switched and complementary problem.

The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection range of the utility model.

Claims (10)

1. a vehicle mounted guidance bridge communications device is connected with automatic navigator and automobile bus network, and said automobile bus network connects vehicle control system, it is characterized in that, said vehicle mounted guidance bridge communications device comprises:

With the data transmit-receive module that the data that receive are carried out level conversion and sent, first communication terminal of said data transmit-receive module is connected with said automobile bus network;

To resolving from the data of said automatic navigator and the input of said data transmit-receive module and encoding and assemble the central communication control module that transmit the back, first communication ends of said central communication control module is connected with the communication terminal of said automatic navigator and second communication terminal of said data transmit-receive module respectively with the second communication end.

2. vehicle mounted guidance bridge communications device as claimed in claim 1 is characterized in that said data transmit-receive module comprises:

82C250CAN transceiver U1, resistance R 1, resistance R 2, resistance R 3, capacitor C 1, capacitor C 2, capacitor C 3 and resistance R 4;

The high level CAN voltage I/O end of said 82C250CAN transceiver U1 is connected with first end of said resistance R 1 and first end line of said resistance R 2 respectively with low level CAN voltage I/O end; Common first communication terminal that constitutes said data transmit-receive module of second end of said resistance R 1 and second end of said resistance R 2; Said resistance R 3 is connected between second end of second end and said resistance R 2 of said resistance R 1; Said capacitor C 1 is connected between second end and ground of said resistance R 1; Said capacitor C 2 also is connected between second end and ground of said resistance R 2; Power end and the earth terminal of said 82C250CAN transceiver U1 connects respectively+5V DC power supply and ground; Said capacitor C 3 is connected between the power end and earth terminal of said 82C250CAN transceiver U1; Common second communication terminal that constitutes said data transmit-receive module of the data sending terminal of said 82C250CAN transceiver U1 and data receiver, the reference voltage end sky of said 82C250CAN transceiver U1 connects, and said resistance R 4 is connected between the resistance input and ground of said 82C250CAN transceiver U1.

3. vehicle mounted guidance bridge communications device as claimed in claim 1 is characterized in that, said central communication control module comprises:

STC12C5A56AD single-chip microcomputer U2, capacitor C 4, resistance R 5, capacitor C 5, capacitor C 6, crystal oscillator CRT1, resistance R 6, SJA1000 CAN controllers U3, resistance R 7, resistance R 8 and capacitor C 7;

Power end and the earth terminal of said STC12C5A56AD single-chip microcomputer U2 connects respectively+5V DC power supply and ground; Said capacitor C 4 is connected between the power end and earth terminal of said STC12C5A56AD single-chip microcomputer U2; The input end of clock of said STC12C5A56AD single-chip microcomputer U2 is connected with first end of said capacitor C 5 and first end of said capacitor C 6 respectively with output terminal of clock; Said crystal oscillator CRT1 is connected between the input end of clock and output terminal of clock of said STC12C5A56AD single-chip microcomputer U2; Second end of the said capacitor C 5 of first termination of said resistance R 5; Second end of said resistance R 5 is connected with second end and the ground of said capacitor C 6 simultaneously; Common first communication ends that constitutes said central communication control module of the data sending terminal of said STC12C5A56AD single-chip microcomputer U2 and data receiver; First termination of said resistance R 6+5V DC power supply; The interrupt signal end of the said SJA1000 CAN controllers of second termination U3 of said resistance R 6; The first address/data end to the, the eight address/data ends of said SJA1000 CAN controllers U3 are connected with the first I/O end to the, the eight I/O ends of said STC12C5A56AD single-chip microcomputer U2 respectively; The sheet of said SJA1000 CAN controllers U3 select input, mode signal end, data read/Enable Pin, data write end and reset terminal and read end, external data with the 9th address/data end, address latch signal end, the external data of said STC12C5A56AD single-chip microcomputer U2 respectively and write and hold and the tenth address/data end is connected; The output terminal of clock sky of said SJA1000 CAN controllers U3 connects; The common second communication end that constitutes said central communication control module of first data sending terminal of said SJA1000 CAN controllers U3 and first data receiver; The second data sending terminal sky of said SJA1000 CAN controllers U3 connects; Second data receiver of said SJA1000 CAN controllers U3 is connected second termination of said resistance R 7+5V DC power supply, the second end ground connection of said resistance R 8 simultaneously with first end of said resistance R 7 and first end of said resistance R 8; The mode selection terminal of said SJA1000 CAN controllers U3, logic power end, comparator power end, driving power end are connected to+the 5V DC power supply altogether; The earth terminal of said SJA1000 CAN controllers U3, comparator earth terminal and the equal ground connection of driving earth terminal, said capacitor C 7 is connected between the mode selection terminal and earth terminal of said SJA1000 CAN controllers U3, and the oscillator input of said SJA1000 CAN controllers U3 is connected with output terminal of clock with the input end of clock of said STC12C5A56AD single-chip microcomputer U2 respectively with oscillator output end.

4. vehicle mounted guidance bridge communications device as claimed in claim 1 is characterized in that said data transmit-receive module comprises:

TJA1020LIN transceiver U4, resistance R 9, diode D1, resistance R 10 and resistance R 11;

The external voltage adjustable side sky of said TJA1020LIN transceiver U4 connects; Power supply termination+12V DC power supply of said TJA1020LIN transceiver U4; The anode of said diode D1 and negative electrode connect the power end of said TJA1020LIN transceiver U4 and first end of said resistance R 10 respectively; Second end of said resistance R 10 is connected with the LIN bus I/O end of said TJA1020LIN transceiver U4 and first end of said resistance R 11 simultaneously; Second end of said resistance R 11 is first communication terminal of said data transmit-receive module 101; The earth terminal ground connection of said TJA1020LIN transceiver U4; Common second communication terminal that constitutes said data transmit-receive module of the data receiver of said TJA1020LIN transceiver U4, dormancy control end and data sending terminal, this locality of said TJA1020LIN transceiver U4 is waken first end of the said resistance R 9 of input termination, second termination of said resistance R 9+12V DC power supply up.

5. vehicle mounted guidance bridge communications device as claimed in claim 1 is characterized in that, said central communication control module comprises:

TMP86FS49 single-chip microcomputer U5, resistance R 12, resistance R 13, crystal oscillator CRT2, capacitor C 8, capacitor C 9, resistance R 14, resistance R 15, NPN type triode Q1, LED 1, LED 2, resistance R 16, resistance R 17 and resistance R 18;

The ground connection termination equipotential ground of said TMP86FS49 single-chip microcomputer U5; Said resistance R 12 is connected between the earth terminal and test signal end of said TMP86FS49 single-chip microcomputer U5; The input end of clock of said TMP86FS49 single-chip microcomputer U5 is connected with first end of said crystal oscillator CRT2 and first end of said capacitor C 8 simultaneously; The output terminal of clock of said TMP86FS49 single-chip microcomputer U5 connects first end of said resistance R 13; Second end of said resistance R 13 is connected with second end of said crystal oscillator CRT2 and first end of said capacitor C 9 simultaneously; Second end of said capacitor C 8 and second end of said capacitor C 9 all connect equipotential ground; Power supply termination+5V DC power supply of said TMP86FS49 single-chip microcomputer U5; The reset terminal of said TMP86FS49 single-chip microcomputer U5 is connected with first end of said resistance R 14 and the base stage of said NPN type triode Q1 simultaneously; Second end of said resistance R 14 connects simultaneously+first end of 5V DC power supply and resistance R 15; The collector electrode of the said NPN type of second termination triode Q1 of said resistance R 15; The grounded emitter of said NPN type triode Q1; Common first communication ends that constitutes said central communication control module of first data receiver of said TMP86FS49 single-chip microcomputer U5 and first data sending terminal, the common second communication end that constitutes said central communication control module of the first I/O end, second data sending terminal and second data receiver of said TMP86FS49 single-chip microcomputer U5, the first analog signal end of said TMP86FS49 single-chip microcomputer U5 is connected with the negative electrode of said LED 1 and the negative electrode of said LED 2 respectively with the second analog signal end; First end of said resistance R 16 and first end of said resistance R 17 connect the anode of said LED 1 and the anode of said LED 2 respectively; Second end of said resistance R 16 and second end of said resistance R 17 all connect+the 5V DC power supply, said resistance R 18 be connected in said TMP86FS49 single-chip microcomputer U5 the 3rd analog signal end and+the 5V power supply between, the analog power end of said TMP86FS49 single-chip microcomputer U5 and analog reference voltage end all are connected with+5V DC power supply.

6. automobile; It is characterized in that said automobile comprises vehicle mounted guidance bridge communications device, said vehicle mounted guidance bridge communications device is connected with automatic navigator and automobile bus network; Said automobile bus network connects vehicle control system, and said vehicle mounted guidance bridge communications device comprises:

With the data transmit-receive module that the data that receive are carried out level conversion and sent, first communication terminal of said data transmit-receive module is connected with said automobile bus network;

To resolving from the data of said automatic navigator and the input of said data transmit-receive module and encoding and assemble the central communication control module that transmit the back, first communication ends of said central communication control module is connected with the communication terminal of said automatic navigator and second communication terminal of said data transmit-receive module respectively with the second communication end.

7. automobile as claimed in claim 6 is characterized in that, said data transmit-receive module comprises:

82C250CAN transceiver U1, resistance R 1, resistance R 2, resistance R 3, capacitor C 1, capacitor C 2, capacitor C 3 and resistance R 4;

The high level CAN voltage I/O end of said 82C250CAN transceiver U1 is connected with first end of said resistance R 1 and first end line of said resistance R 2 respectively with low level CAN voltage I/O end; Common first communication terminal that constitutes said data transmit-receive module of second end of said resistance R 1 and second end of said resistance R 2; Said resistance R 3 is connected between second end of second end and said resistance R 2 of said resistance R 1; Said capacitor C 1 is connected between second end and ground of said resistance R 1; Said capacitor C 2 also is connected between second end and ground of said resistance R 2; Power end and the earth terminal of said 82C250CAN transceiver U1 connects respectively+5V DC power supply and ground; Said capacitor C 3 is connected between the power end and earth terminal of said 82C250CAN transceiver U1; Common second communication terminal that constitutes said data transmit-receive module of the data sending terminal of said 82C250CAN transceiver U1 and data receiver, the reference voltage end sky of said 82C250CAN transceiver U1 connects, and said resistance R 4 is connected between the resistance input and ground of said 82C250CAN transceiver U1.

8. automobile as claimed in claim 6 is characterized in that, said central communication control module comprises:

STC12C5A56AD single-chip microcomputer U2, capacitor C 4, resistance R 5, capacitor C 5, capacitor C 6, crystal oscillator CRT1, resistance R 6, SJA1000 CAN controllers U3, resistance R 7, resistance R 8 and capacitor C 7;

Power end and the earth terminal of said STC12C5A56AD single-chip microcomputer U2 connects respectively+5V DC power supply and ground; Said capacitor C 4 is connected between the power end and earth terminal of said STC12C5A56AD single-chip microcomputer U2; The input end of clock of said STC12C5A56AD single-chip microcomputer U2 is connected with first end of said capacitor C 5 and first end of said capacitor C 6 respectively with output terminal of clock; Said crystal oscillator CRT1 is connected between the input end of clock and output terminal of clock of said STC12C5A56AD single-chip microcomputer U2; Second end of the said capacitor C 5 of first termination of said resistance R 5; Second end of said resistance R 5 is connected with second end and the ground of said capacitor C 6 simultaneously; Common first communication ends that constitutes said central communication control module of the data sending terminal of said STC12C5A56AD single-chip microcomputer U2 and data receiver; First termination of said resistance R 6+5V DC power supply; The interrupt signal end of the said SJA1000 CAN controllers of second termination U3 of said resistance R 6; The first address/data end to the, the eight address/data ends of said SJA1000 CAN controllers U3 are connected with the first I/O end to the, the eight I/O ends of said STC12C5A56AD single-chip microcomputer U2 respectively; The sheet of said SJA1000 CAN controllers U3 select input, mode signal end, data read/Enable Pin, data write end and reset terminal and read end, external data with the 9th address/data end, address latch signal end, the external data of said STC12C5A56AD single-chip microcomputer U2 respectively and write and hold and the tenth address/data end is connected; The output terminal of clock sky of said SJA1000 CAN controllers U3 connects; The common second communication end that constitutes said central communication control module of first data sending terminal of said SJA1000 CAN controllers U3 and first data receiver; The second data sending terminal sky of said SJA1000 CAN controllers U3 connects; Second data receiver of said SJA1000 CAN controllers U3 is connected second termination of said resistance R 7+5V DC power supply, the second end ground connection of said resistance R 8 simultaneously with first end of said resistance R 7 and first end of said resistance R 8; The mode selection terminal of said SJA1000 CAN controllers U3, logic power end, comparator power end, driving power end are connected to+the 5V DC power supply altogether; The earth terminal of said SJA1000 CAN controllers U3, comparator earth terminal and the equal ground connection of driving earth terminal, said capacitor C 7 is connected between the mode selection terminal and earth terminal of said SJA1000 CAN controllers U3, and the oscillator input of said SJA1000 CAN controllers U3 is connected with output terminal of clock with the input end of clock of said STC12C5A56AD single-chip microcomputer U2 respectively with oscillator output end.

9. automobile as claimed in claim 6 is characterized in that, said data transmit-receive module comprises:

TJA1020LIN transceiver U4, resistance R 9, diode D1, resistance R 10 and resistance R 11;

The external voltage adjustable side sky of said TJA1020LIN transceiver U4 connects; Power supply termination+12V DC power supply of said TJA1020LIN transceiver U4; The anode of said diode D1 and negative electrode connect the power end of said TJA1020LIN transceiver U4 and first end of said resistance R 10 respectively; Second end of said resistance R 10 is connected with the LIN bus I/O end of said TJA1020LIN transceiver U4 and first end of said resistance R 11 simultaneously; Second end of said resistance R 11 is first communication terminal of said data transmit-receive module 101; The earth terminal ground connection of said TJA1020LIN transceiver U4; Common second communication terminal that constitutes said data transmit-receive module of the data receiver of said TJA1020LIN transceiver U4, dormancy control end and data sending terminal, this locality of said TJA1020LIN transceiver U4 is waken first end of the said resistance R 9 of input termination, second termination of said resistance R 9+12V DC power supply up.

10. automobile as claimed in claim 6 is characterized in that, said central communication control module comprises:

TMP86FS49 single-chip microcomputer U5, resistance R 12, resistance R 13, crystal oscillator CRT2, capacitor C 8, capacitor C 9, resistance R 14, resistance R 15, NPN type triode Q1, LED 1, LED 2, resistance R 16, resistance R 17 and resistance R 18;

The ground connection termination equipotential ground of said TMP86FS49 single-chip microcomputer U5; Said resistance R 12 is connected between the earth terminal and test signal end of said TMP86FS49 single-chip microcomputer U5; The input end of clock of said TMP86FS49 single-chip microcomputer U5 is connected with first end of said crystal oscillator CRT2 and first end of said capacitor C 8 simultaneously; The output terminal of clock of said TMP86FS49 single-chip microcomputer U5 connects first end of said resistance R 13; Second end of said resistance R 13 is connected with second end of said crystal oscillator CRT2 and first end of said capacitor C 9 simultaneously; Second end of said capacitor C 8 and second end of said capacitor C 9 all connect equipotential ground; Power supply termination+5V DC power supply of said TMP86FS49 single-chip microcomputer U5; The reset terminal of said TMP86FS49 single-chip microcomputer U5 is connected with first end of said resistance R 14 and the base stage of said NPN type triode Q1 simultaneously; Second end of said resistance R 14 connects simultaneously+first end of 5V DC power supply and resistance R 15; The collector electrode of the said NPN type of second termination triode Q1 of said resistance R 15; The grounded emitter of said NPN type triode Q1; Common first communication ends that constitutes said central communication control module of first data receiver of said TMP86FS49 single-chip microcomputer U5 and first data sending terminal, the common second communication end that constitutes said central communication control module of the first I/O end, second data sending terminal and second data receiver of said TMP86FS49 single-chip microcomputer U5, the first analog signal end of said TMP86FS49 single-chip microcomputer U5 is connected with the negative electrode of said LED 1 and the negative electrode of said LED 2 respectively with the second analog signal end; First end of said resistance R 16 and first end of said resistance R 17 connect the anode of said LED 1 and the anode of said LED 2 respectively; Second end of said resistance R 16 and second end of said resistance R 17 all connect+the 5V DC power supply, said resistance R 18 be connected in said TMP86FS49 single-chip microcomputer U5 the 3rd analog signal end and+the 5V power supply between, the analog power end of said TMP86FS49 single-chip microcomputer U5 and analog reference voltage end all are connected with+5V DC power supply.

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