CN201111708Y - Non-contact type car failure diagnosis device - Google Patents
Non-contact type car failure diagnosis device Download PDFInfo
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- CN201111708Y CN201111708Y CNU200720181565XU CN200720181565U CN201111708Y CN 201111708 Y CN201111708 Y CN 201111708Y CN U200720181565X U CNU200720181565X U CN U200720181565XU CN 200720181565 U CN200720181565 U CN 200720181565U CN 201111708 Y CN201111708 Y CN 201111708Y
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- diagnostic trouble
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Abstract
The utility model relates to a non-contact vehicle fault diagnosis device, the non-contact vehicle fault diagnosis device comprises a fault code transmitting device (1) and a fault code receiving device (2), wherein, the fault code transmitting device (1) and the fault code receiving device (2) are separated, the fault code transmitting device (1) comprises a wireless transmitting communication unit (13), the fault code receiving device (2) comprises a wireless receiving communication unit (23), and the wireless transmitting communication unit (13) and the wireless receiving communication unit (23) mutually carry out wireless communication. The wireless transmitting communication unit (13) and the wireless receiving communication unit (23) are a group of bluetooth communication device and/or a group of infrared communication device. The non-contact vehicle fault diagnosis device rules out the possible faults of poor contact, broken guide wires and so on by using the mode of a data cable in the prior art, thus improving the accuracy of the fault diagnosis, saving the time for plugging and pulling the data cable and achieving the purpose of rapidity and convenience.
Description
Technical field
The utility model relates to a kind of contactless automotive diagnostic unit.
Background technology
Automotive diagnostic unit is the device that certain parts is controlled in judgement vehicle failure situation and debugging.Because it is more and more that engine and electronic equipment etc. need the parts of detection and debugging and device on the present automobile, so automotive diagnostic unit also is that automobile production industry, automobile maintenance industry and automobile services industry are necessary.
Existing automotive diagnostic unit all is to use hand-held diagnostic trouble code receiving trap to be connected to the diagnostic trouble code dispensing device by data line, and the diagnostic trouble code dispensing device is placed on the automobile and with some electronic control units of automobile and is connected by CAN bus, LIN bus or other bus.The vehicle failure code that the diagnostic trouble code receiving trap sends by data line read failure sign indicating number dispensing device judges that vehicle failure situation and debugging control certain parts etc.
Because described data line is made of connector and plain conductor, faults such as loose contact, lead fracture can appear in the course of time, influenced fault diagnosis and debugging control certain parts accurately, work is made troubles.In addition, because the plug data line needs the time,, influenced work efficiency for working continuously.The technology that the other automotive diagnostic unit relates to belongs to remote diagnosis, remote diagnosis is that inconvenience also is unnecessary for maintenance company and manufacturing enterprise, because maintenance company and manufacturing enterprise all are works on the spot to automobile, need on automobile, learn the failure condition of this automobile and then it is debugged maintenance.
The utility model content
The purpose of this utility model is to need plug, wearing and tearing and shortcoming such as testing efficiency is low easily at existing automotive diagnostic unit, and a kind of contactless automotive diagnostic unit of plugging of not needing is provided.
The contactless automotive diagnostic unit that the utility model provides comprises diagnostic trouble code dispensing device and diagnostic trouble code receiving trap, wherein the diagnostic trouble code dispensing device separates with the diagnostic trouble code receiving trap, described diagnostic trouble code dispensing device comprises the wireless transmission communication unit, the diagnostic trouble code receiving trap comprises the wireless receiving communication unit, and described wireless transmission communication unit and wireless receiving communication unit carry out radio communication each other.
Wherein said wireless transmission communication unit and wireless receiving communication unit can be one group of Bluetooth communication device and/or one group of infrared communications set.
Because contactless automotive diagnostic unit of the present utility model has comprised wireless transmission communication unit and wireless receiving communication unit, thereby can pass through radio communication (for example Bluetooth communication or infrared communication) and transmit diagnostic trouble code, and do not need to use data line to connect and finish the diagnosis and the debugging of vehicle failure to control certain parts, faults such as the loose contact that may occur, lead fracture have been got rid of, improved the accuracy of fault diagnosis, save the plug used time of data line, reached purpose quickly and easily.
Description of drawings
Fig. 1 is the block scheme of contactless automotive diagnostic unit;
Fig. 2 is the structural drawing of contactless automotive diagnostic unit.
Embodiment
Below, will the utility model is described in more detail by embodiment.
As shown in Figure 1, the contactless automotive diagnostic unit that the utility model provides comprises diagnostic trouble code dispensing device 1 and diagnostic trouble code receiving trap 2, wherein diagnostic trouble code dispensing device 1 separates with diagnostic trouble code receiving trap 2, described diagnostic trouble code dispensing device 1 comprises wireless transmission communication unit 13, diagnostic trouble code receiving trap 2 comprises wireless receiving communication unit 23, and described wireless transmission communication unit 13 carries out radio communication each other with wireless receiving communication unit 23.
Above-mentioned wireless transmission communication unit 13 and wireless receiving communication unit 23 can be one group of Bluetooth communication device and/or one group of infrared communications set.The bi-directional communication function that described wireless transmission communication unit 13 and wireless receiving communication unit 23 can send and receive, under specific circumstances, as when removing fault, wireless receiving communication unit 23 sends the removing failure message of keyboard input, and wireless transmission communication unit 13 receives this information and by fault collection unit 11 this information sent into automobile and carry out the fault eliminating.
Described Bluetooth communication device can be any Bluetooth communication device that meets bluetooth communication standard, and it comprises bluetooth module and Bluetooth transmission/receiving antenna, as being the BTM0402C2P bluetooth module that golden goblet-national territory company produces.
Described infrared communications set can be to comprise that infrared emission receives the device of head and infrared emission receiving circuit, as being the RPM841-H11 infrared communications set that ROHM company produces.
The benefit that adopts Bluetooth communication device or infrared communications set is to have avoided being convenient to execute-in-place because of faults such as the loose contact, the lead that are easy to generate because of wired connection between diagnostic trouble code dispensing device 1 and the diagnostic trouble code receiving trap 2 fracture.
In addition, described diagnostic trouble code dispensing device 1 and described diagnostic trouble code receiving trap 2 also comprise some other parts, to finish fault diagnosis functions.
Described diagnostic trouble code dispensing device 1 also comprises fault collection unit 11, sends microprocessor unit 12 and sends power supply unit 14, fault collection unit 11, transmission microprocessor unit 12 and wireless transmission communication unit 13 are electrically connected in turn, send 14 pairs of fault collection unit 11 of power supply unit, send microprocessor unit 12 and 13 power supplies of wireless transmission communication unit.
Described diagnostic trouble code receiving trap 2 also comprises diagnostic trouble code storage unit 21, receive microprocessor unit 22, Keyboard Control unit 26, diagnostic trouble code display unit 25 and reception power supply unit 24, wireless receiving communication unit 23, Keyboard Control unit 26 is electrically connected to the input end that receives microprocessor unit 22, diagnostic trouble code storage unit 21, diagnostic trouble code display unit 25 is electrically connected to the output terminal that receives microprocessor unit 22, receives 24 pairs of diagnostic trouble code storage unit 21 of power supply unit, receive microprocessor unit 22, Keyboard Control unit 26, diagnostic trouble code display unit 25 and 23 power supplies of wireless receiving communication unit.
Wireless transmission communication unit 13 and wireless receiving communication unit 23 preferably also should have data-interfaces such as UART interface or SPI interface, be convenient to wireless transmission communication unit 13, wireless receiving communication unit 23 respectively with send microprocessor unit 12, receive microprocessor unit 22 swap datas.The bi-directional communication function that described wireless transmission communication unit 13 and wireless receiving communication unit 23 can send and receive, under specific circumstances, as when removing fault, wireless receiving communication unit 23 sends the removing failure message of keyboard input, and wireless transmission communication unit 13 receives this information and by fault collection unit 11 this information sent into automobile and carry out the fault eliminating.
Described fault collection unit 11 comprises general CAN transceiving chip or LIN transceiving chip or similar at least a in the chip, parameter to phase detector of needing to gather cooling-water temperature sensor as engine, wheel speed sensors, detonation sensor, electric car power supply parameter (electric current and voltage temperature), motor in the automobile etc. is gathered, as being the chip TJA1050 that comprises the CAN transmitting-receiving, maybe can be the chip TJA1020 that comprises the LIN transmitting-receiving.The parameter of being gathered (can encode also according to European OBD standard can the custom coding) back of encoding by sending microprocessor unit 12 sends to wireless receiving communication unit 23 by wireless transmission communication unit 13.The fault of each parameter of automobile not only can be gathered in described fault collection unit 11, can also send the order of removing fault to automobile by CAN bus or LIN bus.
Described transmission microprocessor unit 12 and reception microprocessor unit 22 all comprise microprocessor chip, as the LPC2119 chip and the adjunct circuit of PHILIPS Co.'s production.Send microprocessor unit 12 for using the LIN bus to carry out the system that failure code is gathered, preferably also should have full duplex enhancement mode UART interface,, preferably also should have the CAN bus interface for using the CAN bus to carry out the system that failure code is gathered.Described transmission microprocessor unit 12, reception microprocessor unit 22 preferably also should have full duplex UART interface or SPI interface etc., are convenient to it and communicate by letter with wireless transmission communication unit 13, wireless receiving communication unit 23 respectively separately.
Described transmission power supply unit 14 and reception power supply unit 24 comprise reverse-connection preventing circuit, anti-jamming circuit, and mu balanced circuit, filtering circuits etc. its objective is that technical scheme is also known to those skilled in the art to the stable power supply in each unit.
Described diagnostic trouble code storage unit 21 is made of nonvolatile memory, can be internal memory or external memory, can be read-write memory or ROM (read-only memory).The electricallyerasable ROM (EEROM) EEPROM that diagnostic trouble code storage unit 21 is preferably external is as AT93C46.Store in the diagnostic trouble code storage unit 21 corresponding to the failure message of diagnostic trouble code and the information of removing fault, the corresponding parts of regulation and control, as represent the information of the measured parameter of the phase detector etc. of engine water temperature sensor, wheel speed sensors, detonation sensor, electric car power supply parameter (electric current and voltage temperature), motor.Information in the diagnostic trouble code storage unit 21 can write in advance, also can write by serial communication interface (as the SPI mouth) by receiving microprocessor unit 22.
Described Keyboard Control unit 26 comprises one or more keyswitches and adjunct circuit, is used to import the fault that selection will show, the mode of operation that will select, to the information such as operation of fault clearance.
Described diagnostic trouble code display unit 25 comprises LCDs and driving circuit, is used to show diagnostic trouble code information, keyboard input information etc.
Provide an embodiment of the present utility model below in conjunction with Fig. 2.Select the CAN bus to be connected among this embodiment with automobile (not shown) to be detected.As an alternative, adopt the LIN bus also can realize identical purpose, the LIN bus connecting mode no longer describes in detail.In addition, for the sake of simplicity, wireless transmission communication unit 13 and wireless receiving communication unit 23 are Bluetooth communication device among this embodiment, the embodiment of the embodiment of infrared communications set and bluetooth infrared combination no longer provides, need to prove that Bluetooth communication device and infrared communications set can select chip to be connected to by sheet in the mode of bluetooth infrared combination sends microprocessor unit 12 and receives microprocessor unit 22, or be connected respectively to the different receiving end that sends microprocessor unit 12 and reception microprocessor unit 22, be connected to RXD0 and TXD0 as one, another is connected to RXD1 and TXD1.For the sake of simplicity, transmission power supply unit 14 and reception power supply unit 24 are not shown.
As shown in Figure 2, the CAN line end CANH/CANL of the CAN transceiving chip TJA1050 of fault collection unit 11 connects the CAN bus of the communication network of automobile.The RXD/TXD end of CAN transceiving chip TJA1050 connects the CAN interface CAN-TX/CAN-RX end that sends microprocessor unit 12.The RXD/TXD that sends the full duplex UART interface of microprocessor unit 12 holds the UART interface TXD/RXD that is connected to as the bluetooth module in the Bluetooth communication device of wireless transmission communication unit 13.
As shown in Figure 2, the TXD/RXD end that connects the UART mouth that receives microprocessor unit 22 as the RXD/TXD end of the UART mouth of the bluetooth module in the Bluetooth communication device of wireless receiving communication unit 23.If use external nonvolatile memory, the corresponding I/O (SSEL, SCK, MOSI, MISO) of reception microprocessor unit 22 and the I/O (CS, CK, SI, SO) of the nonvolatile memory of diagnostic trouble code storage unit 23 join; If use built-in nonvolatile memory, receive directly portion's operation within it of microprocessor unit 22.Another group I/O (I/O mouth 2) that receives microprocessor unit 22 connects the driving circuit of diagnostic trouble code display unit 21, and this driving circuit connects liquid crystal display.The one group of I/O (I/O mouth 1) again that receives microprocessor unit 22 connects the button of Keyboard Control unit 26.Each button can directly be connected the I/O mouth that receives microprocessor unit 22 according to number what and circuit needs, also can be connected to the I/O mouth that receives microprocessor unit 22 by chip select circuit, and connected mode is this area usual way.
The different mode of operation that the contactless automotive diagnostic unit that the utility model provides is selected according to the signal of Keyboard Control unit 26 input (as selecting the Bluetooth communication mode), different measurement parameter (as the phase detector of the water temperature of engine, wheel speed sensors, detonation sensor, electric car power supply parameter (electric current and voltage temperature), motor etc.) and move.The measurement parameter of automobile to be detected collects by fault collection unit 11 and sends microprocessor unit 12, fault sends by wireless transmission communication unit 13 with the form of diagnostic trouble code after treatment, receive microprocessor unit 22 by sending into after 23 receptions of wireless receiving communication unit, after the data of storing in the diagnostic trouble code that wireless receiving communication unit 23 is received and the diagnostic trouble code storage unit 21 compare, draw the fault detect result, and send into diagnostic trouble code display unit 25 and show by receiving microprocessor unit 22, the signal of Keyboard Control unit 26 inputs also can be sent into diagnostic trouble code display unit 25 and shows by receiving microprocessor unit 22 in addition.
Claims (4)
1, a kind of contactless automotive diagnostic unit, this contactless automotive diagnostic unit comprises diagnostic trouble code dispensing device (1) and diagnostic trouble code receiving trap (2), it is characterized in that, diagnostic trouble code dispensing device (1) separates with diagnostic trouble code receiving trap (2), described diagnostic trouble code dispensing device (1) comprises wireless transmission communication unit (13), diagnostic trouble code receiving trap (2) comprises wireless receiving communication unit (23), and described wireless transmission communication unit (13) carries out radio communication each other with wireless receiving communication unit (23).
2, contactless automotive diagnostic unit as claimed in claim 1 is characterized in that, described wireless transmission communication unit (13) and wireless receiving communication unit (23) are one group of Bluetooth communication device and/or one group of infrared communications set.
3, contactless automotive diagnostic unit as claimed in claim 1, it is characterized in that, described diagnostic trouble code dispensing device (1) also comprises fault collection unit (11), sends microprocessor unit (12) and sends power supply unit (14), fault collection unit (11), transmission microprocessor unit (12) and wireless transmission communication unit (13) are electrically connected in turn, send power supply unit (14) to fault collection unit (11), transmission microprocessor unit (12) and wireless transmission communication unit (13) power supply.
4, as each described contactless automotive diagnostic unit in the claim 1～3, it is characterized in that, described diagnostic trouble code receiving trap (2) also comprises diagnostic trouble code storage unit (21), receive microprocessor unit (22), Keyboard Control unit (26), diagnostic trouble code display unit (25) and reception power supply unit (24), wireless receiving communication unit (23), Keyboard Control unit (26) is electrically connected to the input end that receives microprocessor unit (22), diagnostic trouble code storage unit (21), diagnostic trouble code display unit (25) is electrically connected to the output terminal that receives microprocessor unit (22), receives power supply unit (24) to diagnostic trouble code storage unit (21), receive microprocessor unit (22), Keyboard Control unit (26), diagnostic trouble code display unit (25) and wireless receiving communication unit (23) power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720181565XU CN201111708Y (en) | 2007-10-18 | 2007-10-18 | Non-contact type car failure diagnosis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720181565XU CN201111708Y (en) | 2007-10-18 | 2007-10-18 | Non-contact type car failure diagnosis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201111708Y true CN201111708Y (en) | 2008-09-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720181565XU Expired - Lifetime CN201111708Y (en) | 2007-10-18 | 2007-10-18 | Non-contact type car failure diagnosis device |
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| Country | Link |
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| CN (1) | CN201111708Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404423A (en) * | 2016-08-31 | 2017-02-15 | 江苏卡威汽车研究院有限公司 | Real-time monitoring system for electric vehicle debugging |
| CN109813559A (en) * | 2019-03-29 | 2019-05-28 | 深圳市元征科技股份有限公司 | A kind of Vehicular diagnostic method and relevant device |
| CN113535618A (en) * | 2020-03-29 | 2021-10-22 | 马克西姆综合产品公司 | System and method for fault detection and reporting through a serial interface transceiver |
-
2007
- 2007-10-18 CN CNU200720181565XU patent/CN201111708Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404423A (en) * | 2016-08-31 | 2017-02-15 | 江苏卡威汽车研究院有限公司 | Real-time monitoring system for electric vehicle debugging |
| CN109813559A (en) * | 2019-03-29 | 2019-05-28 | 深圳市元征科技股份有限公司 | A kind of Vehicular diagnostic method and relevant device |
| CN113535618A (en) * | 2020-03-29 | 2021-10-22 | 马克西姆综合产品公司 | System and method for fault detection and reporting through a serial interface transceiver |
| CN113535618B (en) * | 2020-03-29 | 2023-08-22 | 马克西姆综合产品公司 | System and method for fault detection and reporting through serial interface transceiver |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080910 |