CN201084875Y - A communication connection equipment for vehicles - Google Patents
A communication connection equipment for vehicles Download PDFInfo
- Publication number
- CN201084875Y CN201084875Y CNU2007200404640U CN200720040464U CN201084875Y CN 201084875 Y CN201084875 Y CN 201084875Y CN U2007200404640 U CNU2007200404640 U CN U2007200404640U CN 200720040464 U CN200720040464 U CN 200720040464U CN 201084875 Y CN201084875 Y CN 201084875Y
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- control module
- triode
- automobile
- circuit
- body control
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- 238000004891 communication Methods 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 claims description 5
- 238000003745 diagnosis Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
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Abstract
The utility model discloses a vehicular communication connection equipment, which comprises a power supply circuit connected with each circuit, an automotive combined instrument, and a vehicular body control module. The utility model is characterized in that: the automotive combined instrument and the vehicular control module are connected with the examination equipment by an interface circuit, the interface circuit is connected with the automotive combined instrument and the vehicular control module by k-line. By adopting above structure, the connection equipment has the following advantages that: 1. the examination equipment can perform reading-writing operations to the automotive combined instrument and the vehicular control module conveniently; 2. application range is wide and operability is strong, and the parameters or software of the automotive combined instrument and the vehicular control module can be updated on line or after sale, after updated software is released, people other than professional personnel can also perform conveniently, and the requirement for examination equipment is not high; 3. The circuit is simple and the cost is low; 4. Facilitating platform unification management.
Description
Technical field
The utility model relates to vehicle electric field, particularly a kind of automobile-used communication connection device.
Background technology:
1970 by EIA (EIA) associating Bell System, the common standard of formulating that is used for serial communication of modulator-demodulator producer and terminal manufacturer.Its full name is the DB-25 connector that 25 pin are adopted in " serial binary data exchange interface technical standard between data terminal equipment (DTE) and the data communications equipment (DCE) " this standard code, signal content to each pin of connector is stipulated, also the level of various signals is stipulated.The PC of IBM had been simplified to the DB-9 connector with RS-232 afterwards, thus the standard of coming true.
In the checkout equipment process of exploitation automobile combination meter and car body control module, realize that the serial communication between PC and automobile combination meter and car body control module seems extremely important.Can realize that by serial communication the relevant and parameter setting of important detection such as detection, parameter adjustment to automobile combination meter and car body control module software/hardware version is the prior art technical issues that need to address.
The utility model content
Technical problem to be solved in the utility model is, a kind of automobile-used communication connection device is provided, to reach the purpose that automobile combination meter and Body Control control module and diagnostic device is effectively coupled together and realize data write.
For solving the problems of the technologies described above, the technical solution of the utility model is, a kind of automobile-used communication connection device, comprise the power circuit, automobile combination meter, the car body control module that are connected with each circuit, it is characterized in that: described automobile combination meter, car body control module are connected with diagnostic device by interface circuit;
Described interface circuit is connected with automobile combination meter, car body control module by the k-line line;
Described diagnostic device is used for detection, the parameter adjustment to automobile combination meter and car body control module software/hardware, the setting of important detected parameters.
A kind of automobile-used communication connection device, described interface circuit, comprise triode Q1, Q2, interface chip, connecting socket forms, the k-line line is connected with the pin 10 of interface chip by resistance R 6, again after pin 7 outputs through interface chip, through diode D1, connecting socket is connected with diagnostic device, diagnostic device is connected with the pin 8 of interface chip by connecting socket, export through the pin 9 of interface chip again, be connected with triode Q1 base stage by resistance R 5, the collector electrode of triode Q1 is connected with power circuit by a resistance R 2, and the output of triode Q2 collector electrode is connected with triode Q1 base stage; Triode Q1, Q2 emitter pass through resistance R 4 ground connection by resistance R 3 and triode Q1 base stage; The collector electrode of triode Q2 respectively with the k-line line be connected with power circuit by resistance R 1.
A kind of automobile-used communication connection device, described diagnostic device is a PC.
A kind of automobile-used communication connection device, described diagnostic device is a vehicle-borne diagnosis instrument.
A kind of automobile-used communication connection device, owing to adopt said structure, this connection device has the following advantages; 1, diagnostic device can carry out read-write operation to automobile combination meter and car body control module easily; 2, general wide, workable.Can be online or after sale automobile combination meter and car body control module parameter or software are refreshed; After discharging updating software, the layman also can operate easily; Less demanding to diagnostic device; 3, circuit is simple, and cost is low; 4, be beneficial to the hardware and software platform unified management.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail;
Fig. 1 is a kind of automobile-used communication connection device electrical block diagram of the utility model;
In Fig. 1,1, power circuit; 2, automobile combination meter; 3, car body control module; 4, diagnostic device; 5, connect socket.
Embodiment
As shown in Figure 1, a kind of automobile-used communication connection device comprises the power circuit 1, automobile combination meter 2, the car body control module 3 that are connected with each circuit, and described automobile combination meter 2, car body control module 3 are connected with diagnostic device 4 by interface circuit; Described interface circuit is connected with automobile combination meter 2, car body control module 3 by the k-line line; Described diagnostic device 4 is used for detection, the parameter adjustment to automobile combination meter and car body control module software/hardware, the setting of important detected parameters.
Inner all the GND points of connection device all link together, and are connected altogether with automobile combination meter 2 or car body control module 3 modules; The vehicle body power supply be 12v through a diode after the output Vbat (12V) of power circuit 1.The effect of diode is to prevent that thereby the negative voltage input from influencing the power module 7805 in the power circuit 1, and the voltage of exporting through power module 7805 is Vcc (5V), gives interface chip RS-232 power supply.
The k-line line is connected with the pin 10 (TTL/CMOS Input) of interface chip RS-232 by a resistance R 6, after passing through pin 7 (OUTput) output of interface chip RS232 again, be connected with PC through a diode D1, connection socket 5, realize the reception of data;
PC is connected with the pin 8 (Input) of interface chip RS-232, pass through pin 9 (TTL/CMOS OUTput) output of interface chip RS-232 again, be connected with triode Q1 base stage through a resistance R 5, the collector electrode of triode Q1 is connected with the output Vcc (5V) of power circuit 1 by a resistance R 2, and triode Q1 collector output is connected with triode Q2 base stage; Two triode common emitters are again by a resistance R 3 to GND; The collector electrode of triode Q2 is connected with the output Vbat of power circuit 1 by resistance R 1, and the collector electrode output of triode Q2 connects together with the k-line line; Triode only plays on-off action in this circuit, thereby realizes the transmission of logical one and " 0 ".
When PC transmission data, when automobile combination meter 2 received data with car body control module 3, PC can cut out the port 2 that connects socket 5, opened the port 3 (TX) that connects socket 5 and carried out the transmission of data; For avoiding transmission collision, automobile combination meter 2 and car body control module 3 receive PC will send out the instruction of data the time, also can close the port 2 (RX) that connects socket 5.When interface chip RS232 pin of chip 9 output high level " 1 ", triode Q1 is with conducting, and triode Q2 ends, and this moment, the k-line line was " 1 "; When the pin 9 of interface chip RS232 is output as low level " 0 ", triode Q1 will end, triode Q2 conducting, and this moment, the k-line line was " 0 ".
When PC reception data, when automobile combination meter 2 sent data with car body control module 3, PC can open and connect socket 5 ports 2, closed connection socket 5 ports 3 and carried out the reception of data.Automobile combination meter 2 is closed TX with car body control module 3, and this moment, interface chip pin 9 and the interface chip of interface chip RS-232 drew 8 inoperative.Automobile combination meter 2 passes through the pin 10-interface chip pin 7-PC machine of resistance R 6 to interface chip RS-232 with car body control module 3, realizes the transmission of data.
Be provided with serial data communications protocol software at interface chip RS-232, comprised the repeating transmission that makes mistakes, communication handshake, multiple check, timeout treatment etc.For guaranteeing safety operation:
A, PC and automobile combination meter 2 are to receive and dispatch with the baud rate of 10400b/s with the communication byte of car body control module 3, this baud rate criteria of right and wrong baud rate;
B, in the initialization procedure of communication, must carry out cryptographic check.
Behind the communication initialization, normal communication begins to set up with the baud rate of 10400b/s, and this moment, PC can send the command word throttling to automobile combination meter 2 and car body control module 3, realized setting, read-write and control to its parameter.In official hour, 3 of PC and automobile combination meter 2 and car body control modules must send handshake mutually, otherwise communication is ended; When going wrong, communication also can be ended, and must rebulid communication.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present utility model and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection range of the present utility model.
Claims (4)
1. automobile-used communication connection device, comprise the power circuit (1), automobile combination meter (2), the car body control module (3) that are connected with each circuit, it is characterized in that: described automobile combination meter (2), car body control module (3) are connected with diagnostic device (4) by interface circuit;
Described interface circuit is connected with automobile combination meter (2), car body control module (3) by the k-line line;
Described diagnostic device (4) is used for detection, the parameter adjustment to automobile combination meter and car body control module software/hardware, the setting of important detected parameters.
2. a kind of automobile-used communication connection device according to claim 1, it is characterized in that: described interface circuit, comprise triode (Q1, Q2), interface chip (RS-232), connecting socket (5) forms, the k-line line is connected with the pin 10 of interface chip (RS-232) by resistance (R6), after passing through pin 7 outputs of interface chip (RS-232) again, through diode D1, connecting socket (5) is connected with diagnostic device (4), diagnostic device (4) is connected with the pin 8 of interface chip (RS-232) by connecting socket (5), pass through pin 9 outputs of interface chip (RS-232) again, be connected with triode (Q1) base stage by resistance (R5), the collector electrode of triode 1 is connected with power circuit (1) by a resistance (R2), and the output of triode (Q2) collector electrode is connected with triode (Q1) base stage; Triode (Q1, Q2) emitter passes through resistance (R4) ground connection by resistance (R3) and triode (Q1) base stage; The collector electrode of triode (Q2) respectively with the k-line line be connected with power circuit (1) by resistance (R1).
3. a kind of automobile-used communication connection device according to claim 1 and 2 is characterized in that: described diagnostic device (4) is a PC.
4. a kind of automobile-used communication connection device according to claim 1 and 2 is characterized in that: described diagnostic device (4) is a vehicle-borne diagnosis instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200404640U CN201084875Y (en) | 2007-07-21 | 2007-07-21 | A communication connection equipment for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200404640U CN201084875Y (en) | 2007-07-21 | 2007-07-21 | A communication connection equipment for vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201084875Y true CN201084875Y (en) | 2008-07-09 |
Family
ID=39627347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200404640U Expired - Fee Related CN201084875Y (en) | 2007-07-21 | 2007-07-21 | A communication connection equipment for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201084875Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199942A (en) * | 2018-01-08 | 2018-06-22 | 深圳市道通科技股份有限公司 | Vehicle diagnosis method, device, equipment, system and diagnosis connection equipment |
-
2007
- 2007-07-21 CN CNU2007200404640U patent/CN201084875Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199942A (en) * | 2018-01-08 | 2018-06-22 | 深圳市道通科技股份有限公司 | Vehicle diagnosis method, device, equipment, system and diagnosis connection equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SAIC CHERY AUTOMOBILE CO., LTD. Free format text: FORMER NAME OR ADDRESS: QIRUI AUTOMOBILE CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui 241009, China Patentee after: Saic Chery Automobile Co., Ltd. Address before: No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui 241009, China Patentee before: Qirui Automobile Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20120721 |