CN105974911A - Wifi-type EOL tool and diagnosis method utilizing same - Google Patents
Wifi-type EOL tool and diagnosis method utilizing same Download PDFInfo
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- CN105974911A CN105974911A CN201610596588.0A CN201610596588A CN105974911A CN 105974911 A CN105974911 A CN 105974911A CN 201610596588 A CN201610596588 A CN 201610596588A CN 105974911 A CN105974911 A CN 105974911A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
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Abstract
The invention provides a wifi-type EOL tool and a diagnosis method utilizing the same. The wifi-type EOL tool is used for diagnosis of vehicle information and flash of programs, and is connected with a self-diagnosis system of a vehicle. The tool comprises a general control module, a communication module, a WIFI module and a power conversion module. The communication module comprises a CAN communication module and a K communication module; the communication module is connected with an OBD diagnosis interface of the self-diagnosis system and the general control module; the input end of the power conversion module is connected with a vehicle-mounted power source; the output end of the power conversion module is connected with the power end of the general control module; a WIFI module is connected with the general control module through a USART; and the general control module is connected with an upper computer through an SWD interface. The invention also provides the diagnosis method utilizing the wifi-type EOL tool. The problems of poor contact or that connection cannot be established and the like due to onboard interface mechanical failure can be prevented, and reliability of the diagnosis tool is guaranteed.
Description
Technical field
The present invention relates to automobile diagnosis technique field, the EOL instrument of a kind of wifi version and
Utilize the diagnostic method of this instrument.
Background technology
Commercial car electronic control technology quickly grows in recent years, and the ECU quantity in commercial car gets more and more,
As engine electric-controlled unit (ECU), gear box electrical control unit (TCU), instrument controller (CBCU),
Abs braking controller, AMT controller etc., these ECUs are by the way of CAN or K line
Carry out communication.
At present, diagnostic tool mostly has been wire harness version, OBD II mouth be connected to diagnosis after drawing switching
Instrument, is then turned USB line bundle by diagnostic tool by serial ports and is connected to host computer.Too much wire harness is even
Connect and add equipment cost, in addition in order to preferably vehicle electrically controlling unit be diagnosed, generally require
Being monitored under steam, therefore wire harness is looked into interface and is easy to loose contact occur in rough ride
Situation, the equipment that affects normally works.
Summary of the invention
It is an object of the invention to provide the EOL instrument of a kind of wifi version and utilize the diagnosis side of this instrument
Method, is used for solving existing diagnostic tool for there being wire harness version, contact easily occurs in driving of jolting
Bad problem.
The present invention solves its technical problem and is adopted the technical scheme that: the EOL instrument of wifi version, uses
In the diagnosis of information of vehicles and writing with a brush dipped in Chinese ink of program, it is connected with the self-diagnosable system of vehicle, it is characterized in that,
Including top control module, communication module, WIFI module and power transfer module；Described communication module bag
Including CAN communication module and K communication module, communication module diagnoses with the OBD of self-diagnosable system respectively and connects
Mouth is connected with top control module；The input of described power transfer module is connected with vehicle power, power supply
The outfan of modular converter is connected with the power end of top control module, and described WIFI module passes through USART
Being connected with top control module, described top control module is connected with host computer, for master control by SWD interface
Module carries out program debugging at host computer and downloads underlying programs.
Further, top control module include STM32F405RG chip and by electric capacity C10, electric capacity C11,
Electric capacity C13, electric capacity C14, resistance R8 and the peripheral circuit of 8MHz crystal oscillator chip Y1 composition；8MHz
No. 3 pins of crystal oscillator chip Y1 are connected with the PH0 pin of STM32F405RG chip, electric capacity C10's
One end is connected with No. 1 pin and No. 4 pins of crystal oscillator chip Y1 respectively, and connects 3.3V voltage, electricity
The other end holding C10 is connected with No. 2 pins of crystal oscillator chip Y1 and isolates ground connection；The one of resistance R8
Termination 3.3V voltage, the other end be connected with one end of electric capacity C13 and with the NRST of STM32F405RG chip
Pin is connected, the other end isolation ground connection of electric capacity C13；One end of electric capacity C14 and STM32F405RG
The VCAP_1 pin of chip is connected, the other end isolation ground connection of electric capacity C14；One end of electric capacity C11 with
The VCAP_2 pin of STM32F405RG chip is connected, the other end isolation ground connection of electric capacity C11；
Described CAN communication module includes for diagnosing ground the first CAN communication module and for communication second
CAN communication module；The first described CAN communication module includes by TCAN332 chip IC 2, ACT1210
Common-mode filter CMF1, electric capacity C3, resistance R2 and PESD2CAN CAN ESD protection diode
First CAN communication circuit of TVS1 composition；No. 1 pin of TCAN332 chip IC 2 and STM32F405RG
The PB15 pin of chip is connected, and No. 4 pins are connected with the PB16 pin of STM32F405RG chip, and 2
Number pin is connected with one end of electric capacity C3 and isolates ground connection, and No. 3 pins are connected with the other end of electric capacity C3
And connect 3.3V voltage, No. 7 pins and No. 6 pins respectively with the 1 of ACT1210 common-mode filter CMF1
Number pin and No. 2 pins are connected, No. 4 pins of common-mode filter CMF1 respectively with PESD2CAN CAN
No. 1 pin of bus ESD protection diode TVS1 is connected with one end of resistance R2, common-mode filter
No. 3 pins of CMF1 protect No. 2 of diode TVS1 to draw with PESD2CAN CAN ESD respectively
Foot is connected with the other end of resistance R2, No. 3 pin isolation of CAN ESD protection diode TVS1
Ground connection；The DH wiring of the first CAN communication circuit is connected with No. 6 pins of OBD interface circuit, and DL connects
Line is connected with No. 14 pins of OBD interface circuit；
The second described CAN communication module includes by TCAN332 chip IC 3, ACT1210 common mode filtering
Device CMF2, electric capacity C9, resistance R5 and PESD2CAN CAN ESD protection diode TVS2 group
The second CAN communication circuit become, the circuit structure of described first CAN communication circuit and the 2nd CAN lead to
The circuit structure of news circuit is identical；
Described K communication module includes by TJA1029 chip IC 5, resistance R6, resistance R7 and electric capacity
The K communicating circuit of C12 composition；Resistance R6 one termination 3.3V voltage, the other end of resistance R6 with
No. 2 pins of TJA1029 chip IC 5 be connected, No. 1 pin of TJA1029 chip IC 5 with
The PA0 pin of STM32F405RG chip is connected, and No. 4 pins draw with the PA1 of STM32F405RG chip
Foot be connected, No. 7 pins are connected with one end of resistance R7, the other end of resistance R7 respectively with TJA1029
No. 6 pins of chip IC 5 are connected with one end of electric capacity C12, the other end of electric capacity C12 and TJA1029
No. 5 pins of chip IC 5 are connected and isolate ground connection；No. 6 pins of TJA1029 chip IC 5 and OBD
No. 7 pins of interface circuit are connected；
Described WIFI module includes ESP_12_E chip and by electric capacity C15, resistance R13, resistance
The peripheral circuit of R15 and resistance R16 composition；No. 22 pins of ESP_12_E chip and STM32F405RG
The PA10 pin of chip is connected, No. 21 pins of ESP_12_E chip and STM32F405RG chip
PA9 pin is connected, and one end of resistance R15 is connected with No. 18 pins of ESP_12_E chip, resistance
Another termination 3.3V voltage of R15, one end of resistance R16 and No. 16 pins of ESP_12_E chip
Being connected, the other end of resistance R16 is connected with No. 15 pins of ESP_12_E chip and isolates ground connection；
One end of resistance R13 is connected with No. 3 pins of ESP_12_E chip, the other end of resistance R13,
No. 1 pin of ESP_12_E chip and No. 8 pins one end with electric capacity C15 respectively is connected, electric capacity C15
The other end isolation ground connection, No. 8 pins of ESP_12_E chip connect 3.3V voltage；
Described power transfer module include by LMR16006YQ3 chip IC 1, electric capacity C1, electric capacity C2,
Electric capacity C4, inductance L1 and the power-switching circuit of Zener diode D1 composition；One end of electric capacity C1 with
No. 1 pin of LMR16006YQ3 chip IC 1 is connected, the other end of electric capacity C1, the 6 of chip IC 1
The negative pole of number pin and Zener diode D1 one end with inductance L1 respectively is connected, Zener diode D1
Positive pole, No. 2 pins one end with electric capacity C2 respectively of IC1 be connected and ground connection, another of electric capacity C2
End is connected with No. 5 pins and No. 4 pins of IC1 respectively, the other end of inductance L1, No. 3 of IC1
Pin and a termination 3.3V voltage of electric capacity C4, the other end ground connection of electric capacity C4.
Further, vehicle-mounted for 24V voltage is converted to 3.3V voltage by described power module.
The diagnostic method of a kind of EOL instrument utilizing wifi version, is characterized in that, including walking in detail below
Rapid:
Step 1), hardware initialization, WIFI module initialize；
Step 2), top control module judge the whether successful connection of WIFI module and host computer, if connected
Success, then perform step 3) operation；
Step 3), host computer and WIFI module set up transparent transmission, WIFI module also sends to top control module
Transparent transmission pass signal；
Step 4), judge the first byte that host computer sends to top control module, if first byte is with " first "
For particular value, then top control module diagnoses CAN according to data initialization；If first byte is with " second " for special
Definite value, top control module sends a frame data frame according to data from diagnosis CAN；If first byte is with " third "
For particular value, top control module is according to data initialization communication CAN；If first byte is specific with " fourth "
Value, top control module sends a frame data frame according to data from communication CAN；
If the message that top control module is after diagnosis CAN receives by screening washer, then will diagnosis CAN report
8 bit data of literary composition are sent to host computer by WIFI module；If top control module receives from communication CAN
By the message after screening washer, then 8 bit data of communication CAN message are sent to by WIFI module
Host computer；
Step 5), continue executing with step 4), carry out Infinite Cyclic operation.
The invention has the beneficial effects as follows: the WIFI version instrument that the present invention provides not only can be saved and produce into
This, it is also possible to save the cost of user (particularly car load enterprise) greatly.This instrument can be
Data normal transmission is ensured, it is not necessary to USB extended line in 10 meters.And due to the wireless network patent mistake of CSIR O
Phase, the price of a set of WIFI module is significantly less than the price of onboard interface and USB connecting line.In addition WIFI
Instrument can be avoided the loose contact caused because of onboard interface mechanical failure maybe cannot set up connection etc. asking
Topic, has ensured the reliability of diagnostic tool.And due to the minimizing of interface, also make the processing of shell more
Add conveniently.
Accompanying drawing explanation
Fig. 1 is the modular structure connection figure of the present invention；
Fig. 2 is the SWD interface circuit figure of the present invention；
Fig. 3 is the OBD interface circuit figure of the present invention；
Fig. 4 is the circuit diagram of the top control module of the present invention；
Fig. 5 is the first CAN communication module circuit diagram of the present invention；
Fig. 6 is the second CAN communication module circuit diagram of the present invention；
Fig. 7 is the K communication module circuit diagram of the present invention；
Fig. 8 is the WIFI module circuit diagram of the present invention；
Fig. 9 is the power transfer module circuit diagram of the present invention；
Figure 10 is the diagnostic flow chart of the present invention.
Detailed description of the invention
As it is shown in figure 1, the EOL instrument of wifi version, for the diagnosis of information of vehicles and writing with a brush dipped in Chinese ink of program,
It is connected with the self-diagnosable system of vehicle, turns including top control module, communication module, WIFI module and power supply
Die change block；Described communication module includes CAN communication module and K communication module, and communication module is respectively
Diagnose interface with the OBD of self-diagnosable system and top control module is connected；Described power transfer module defeated
Entering end to be connected with vehicle power, the outfan of power transfer module is connected with the power end of top control module,
Described WIFI module is connected with top control module, as in figure 2 it is shown, top control module passes through by USART
SWD interface is connected with host computer, carries out program debugging for top control module and download bottom at host computer
Program.
Fig. 3 is OBD interface circuit, uses Plug-8X2 chip.
As shown in Figure 4, top control module includes STM32F405RG chip and by electric capacity C10, electric capacity
C11, electric capacity C13, electric capacity C14, resistance R8 and the peripheral circuit of 8MHz crystal oscillator chip Y1 composition.
No. 3 pins of 8MHz crystal oscillator chip Y1 are connected with the PH0 pin of STM32F405RG chip, electric capacity
One end of C10 is connected with No. 1 pin and No. 4 pins of crystal oscillator chip Y1 respectively, and connects 3.3V voltage,
The other end of electric capacity C10 is connected with No. 2 pins of crystal oscillator chip Y1 and isolates ground connection.Resistance R8's
One termination 3.3V voltage, the other end be connected with one end of electric capacity C13 and with STM32F405RG chip
NRST pin is connected, the other end isolation ground connection of electric capacity C13.One end of electric capacity C14 and STM32F405RG
The VCAP_1 pin of chip is connected, the other end isolation ground connection of electric capacity C14.One end of electric capacity C11 with
The VCAP_2 pin of STM32F405RG chip is connected, the other end isolation ground connection of electric capacity C11.
CAN communication module includes for diagnosing ground the first CAN communication module and for communication the 2nd CAN
Communication module.
As it is shown in figure 5, the first CAN communication module includes by TCAN332 chip IC 2, ACT1210 common
Mode filter CMF1, electric capacity C3, resistance R2 and PESD2CAN CAN ESD protection diode TVS1
First CAN communication circuit of composition.
No. 1 pin of TCAN332 chip IC 2 is connected with the PB15 pin of STM32F405RG chip, and 4
Number pin is connected with the PB16 pin of STM32F405RG chip, one end phase of No. 2 pins and electric capacity C3
Connecting and isolate ground connection, No. 3 pins are connected with the other end of electric capacity C3 and connect 3.3V voltage, No. 7 pins
It is connected with No. 1 pin and No. 2 pins of ACT1210 common-mode filter CMF1 respectively with No. 6 pins,
No. 4 pins of common-mode filter CMF1 protect diode TVS1 with PESD2CAN CAN ESD respectively
No. 1 pin be connected with one end of resistance R2, No. 3 pins of common-mode filter CMF1 respectively with
No. 2 pins of PESD2CAN CAN ESD protection diode TVS1 and the other end phase of resistance R2
Even, No. 3 pin isolation ground connection of CAN ESD protection diode TVS1.First CAN communication electricity
The DH wiring on road is connected with No. 6 pins of OBD interface circuit, DL wiring and OBD interface circuit
No. 14 pins are connected.
As shown in Figure 6, the second CAN communication module includes by TCAN332 chip IC 3, ACT1210 common
Mode filter CMF2, electric capacity C9, resistance R5 and PESD2CAN CAN ESD protection diode TVS2
Second CAN communication circuit of composition, the PH wiring of the second CAN communication circuit and OBD interface circuit
No. 11 pins are connected, and PL wiring is connected with No. 12 pins of OBD interface circuit.
The circuit structure of the first CAN communication circuit and the circuit structure of the second CAN communication circuit are identical；?
This just repeats no more.
As it is shown in fig. 7, K communication module includes by TJA1029 chip IC 5, resistance R6, resistance R7 and
The K communicating circuit of electric capacity C12 composition.The one termination 3.3V voltage of resistance R6, another of resistance R6
End be connected with No. 2 pins of TJA1029 chip IC 5, No. 1 pin of TJA1029 chip IC 5 and
The PA0 pin of STM32F405RG chip is connected, and No. 4 pins draw with the PA1 of STM32F405RG chip
Foot be connected, No. 7 pins are connected with one end of resistance R7, the other end of resistance R7 respectively with TJA1029
No. 6 pins of chip IC 5 are connected with one end of electric capacity C12, the other end of electric capacity C12 and TJA1029
No. 5 pins of chip IC 5 are connected and isolate ground connection.No. 6 pins of TJA1029 chip IC 5 and OBD
No. 7 pins of interface circuit are connected.
As shown in Figure 8, WIFI module include ESP_12_E chip and by electric capacity C15, resistance R13,
The peripheral circuit of resistance R15 and resistance R16 composition；No. 22 pins of ESP_12_E chip with
The PA10 pin of STM32F405RG chip be connected, No. 21 pins of ESP_12_E chip with
The PA9 pin of STM32F405RG chip is connected, one end of resistance R15 and the 18 of ESP_12_E chip
Number pin is connected, another termination 3.3V voltage of resistance R15, one end of resistance R16 and ESP_12_E
No. 16 pins of chip are connected, No. 15 pin phases of the other end of resistance R16 and ESP_12_E chip
Connect and isolate ground connection.One end of resistance R13 is connected with No. 3 pins of ESP_12_E chip, resistance R13
The other end, No. 1 pin of ESP_12_E chip and No. 8 pins respectively with one end phase of electric capacity C15
Even, the other end isolation ground connection of electric capacity C15, No. 8 pins of ESP_12_E chip connect 3.3V voltage.
As it is shown in figure 9, power transfer module includes by LMR16006YQ3 chip IC 1, electric capacity C1, electricity
Hold C2, electric capacity C4, inductance L1 and the power-switching circuit of Zener diode D1 composition；Electric capacity C1
One end be connected with No. 1 pin of LMR16006YQ3 chip IC 1, the other end of electric capacity C1, chip
No. 6 pins of IC1 with the negative pole of Zener diode D1 respectively one end with inductance L1 be connected, voltage stabilizing two
The positive pole of pole pipe D1, No. 2 pins one end with electric capacity C2 respectively of IC1 are connected and ground connection, electric capacity
The other end of C2 is connected with No. 5 pins and No. 4 pins of IC1 respectively, the other end of inductance L1, IC1
No. 3 pins and electric capacity C4 one termination 3.3V voltage, the other end ground connection of electric capacity C4.Power supply mould
Vehicle-mounted for 24V voltage is converted to 3.3V voltage by block.
As shown in Figure 10, the diagnostic method of a kind of EOL instrument utilizing wifi version, including following tool
Body step:
Step 1), hardware initialization, WIFI module initialize；
Step 2), top control module judge the whether successful connection of WIFI module and host computer, if connected
Success, then perform step 3) operation；
Step 3), host computer and WIFI module set up transparent transmission, WIFI module also sends to top control module
Transparent transmission pass signal；
Step 4), judge the first byte that host computer sends to top control module, if first byte is with " first "
For particular value, then top control module diagnoses CAN according to data initialization；If first byte is with " second " for special
Definite value, top control module sends a frame data frame according to data from diagnosis CAN；If first byte is with " third "
For particular value, top control module is according to data initialization communication CAN；If first byte is specific with " fourth "
Value, top control module sends a frame data frame according to data from communication CAN；
If the message that top control module is after diagnosis CAN receives by screening washer, then will diagnosis CAN report
8 bit data of literary composition are sent to host computer by WIFI module；If top control module receives from communication CAN
By the message after screening washer, then 8 bit data of communication CAN message are sent to by WIFI module
Host computer；
Step 5), continue executing with step 4), carry out Infinite Cyclic operation.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not to this
The restriction of invention protection domain, on the basis of technical scheme, those skilled in the art are not
Need to pay various amendments that creative work can make or deformation still protection scope of the present invention with
In.
Claims (4)
- The EOL instrument of 1.wifi version, for the diagnosis of information of vehicles and writing with a brush dipped in Chinese ink of program, with vehicle Self-diagnosable system is connected, and it is characterized in that, including top control module, communication module, WIFI module and power supply Modular converter；Described communication module includes CAN communication module and K communication module, and communication module divides Do not diagnose interface with the OBD of self-diagnosable system and top control module is connected；Described power transfer module Input is connected with vehicle power, and the outfan of power transfer module is connected with the power end of top control module, Described WIFI module is connected with top control module by USART, and described top control module is connect by SWD Mouth is connected with host computer, carries out program debugging for top control module and download underlying programs at host computer.
- The EOL instrument of wifi version the most according to claim 1, is characterized in that, top control module Including STM32F405RG chip and by electric capacity C10, electric capacity C11, electric capacity C13, electric capacity C14, The peripheral circuit of resistance R8 and 8MHz crystal oscillator chip Y1 composition；No. 3 of 8MHz crystal oscillator chip Y1 are drawn Foot is connected with the PH0 pin of STM32F405RG chip, one end of electric capacity C10 respectively with crystal oscillator chip No. 1 pin and No. 4 pins of Y1 are connected, and connect 3.3V voltage, the other end of electric capacity C10 and crystal oscillator No. 2 pins of chip Y1 are connected and isolate ground connection；The one termination 3.3V voltage of resistance R8, the other end It is connected with one end of electric capacity C13 and is connected with the NRST pin of STM32F405RG chip, electric capacity C13 The other end isolation ground connection；The VCAP_1 pin phase of one end of electric capacity C14 and STM32F405RG chip Even, the other end isolation ground connection of electric capacity C14；One end of electric capacity C11 and STM32F405RG chip VCAP_2 pin is connected, the other end isolation ground connection of electric capacity C11；Described CAN communication module includes for diagnosing ground the first CAN communication module and for communication second CAN communication module；The first described CAN communication module includes by TCAN332 chip IC 2, ACT1210 Common-mode filter CMF1, electric capacity C3, resistance R2 and PESD2CAN CAN ESD protection diode First CAN communication circuit of TVS1 composition；No. 1 pin of TCAN332 chip IC 2 and STM32F405RG The PB15 pin of chip is connected, and No. 4 pins are connected with the PB16 pin of STM32F405RG chip, and 2 Number pin is connected with one end of electric capacity C3 and isolates ground connection, and No. 3 pins are connected with the other end of electric capacity C3 And connect 3.3V voltage, No. 7 pins and No. 6 pins respectively with the 1 of ACT1210 common-mode filter CMF1 Number pin and No. 2 pins are connected, No. 4 pins of common-mode filter CMF1 respectively with PESD2CAN CAN No. 1 pin of bus ESD protection diode TVS1 is connected with one end of resistance R2, common-mode filter No. 3 pins of CMF1 protect No. 2 of diode TVS1 to draw with PESD2CAN CAN ESD respectively Foot is connected with the other end of resistance R2, No. 3 pin isolation of CAN ESD protection diode TVS1 Ground connection；The DH wiring of the first CAN communication circuit is connected with No. 6 pins of OBD interface circuit, and DL connects Line is connected with No. 14 pins of OBD interface circuit；The second described CAN communication module includes by TCAN332 chip IC 3, ACT1210 common mode filtering Device CMF2, electric capacity C9, resistance R5 and PESD2CAN CAN ESD protection diode TVS2 group The second CAN communication circuit become, the circuit structure of described first CAN communication circuit and the 2nd CAN lead to The circuit structure of news circuit is identical；Described K communication module includes by TJA1029 chip IC 5, resistance R6, resistance R7 and electric capacity The K communicating circuit of C12 composition；Resistance R6 one termination 3.3V voltage, the other end of resistance R6 with No. 2 pins of TJA1029 chip IC 5 be connected, No. 1 pin of TJA1029 chip IC 5 with The PA0 pin of STM32F405RG chip is connected, and No. 4 pins draw with the PA1 of STM32F405RG chip Foot be connected, No. 7 pins are connected with one end of resistance R7, the other end of resistance R7 respectively with TJA1029 No. 6 pins of chip IC 5 are connected with one end of electric capacity C12, the other end of electric capacity C12 and TJA1029 No. 5 pins of chip IC 5 are connected and isolate ground connection；No. 6 pins of TJA1029 chip IC 5 and OBD No. 7 pins of interface circuit are connected；Described WIFI module includes ESP_12_E chip and by electric capacity C15, resistance R13, resistance The peripheral circuit of R15 and resistance R16 composition；No. 22 pins of ESP_12_E chip and STM32F405RG The PA10 pin of chip is connected, No. 21 pins of ESP_12_E chip and STM32F405RG chip PA9 pin is connected, and one end of resistance R15 is connected with No. 18 pins of ESP_12_E chip, resistance Another termination 3.3V voltage of R15, one end of resistance R16 and No. 16 pins of ESP_12_E chip Being connected, the other end of resistance R16 is connected with No. 15 pins of ESP_12_E chip and isolates ground connection； One end of resistance R13 is connected with No. 3 pins of ESP_12_E chip, the other end of resistance R13, No. 1 pin of ESP_12_E chip and No. 8 pins one end with electric capacity C15 respectively is connected, electric capacity C15 The other end isolation ground connection, No. 8 pins of ESP_12_E chip connect 3.3V voltage；Described power transfer module include by LMR16006YQ3 chip IC 1, electric capacity C1, electric capacity C2, Electric capacity C4, inductance L1 and the power-switching circuit of Zener diode D1 composition；One end of electric capacity C1 with No. 1 pin of LMR16006YQ3 chip IC 1 is connected, the other end of electric capacity C1, the 6 of chip IC 1 The negative pole of number pin and Zener diode D1 one end with inductance L1 respectively is connected, Zener diode D1 Positive pole, No. 2 pins one end with electric capacity C2 respectively of IC1 be connected and ground connection, another of electric capacity C2 End is connected with No. 5 pins and No. 4 pins of IC1 respectively, the other end of inductance L1, No. 3 of IC1 Pin and a termination 3.3V voltage of electric capacity C4, the other end ground connection of electric capacity C4.
- The EOL instrument of wifi version the most according to claim 2, is characterized in that, described electricity Vehicle-mounted for 24V voltage is converted to 3.3V voltage by source module.
- 4. utilize a diagnostic method for the EOL instrument of wifi version, it is characterized in that, including following tool Body step:Step 1), hardware initialization, WIFI module initialize；Step 2), top control module judge the whether successful connection of WIFI module and host computer, if connected Success, then perform step 3) operation；Step 3), host computer and WIFI module set up transparent transmission, WIFI module also sends to top control module Transparent transmission pass signal；Step 4), judge the first byte that host computer sends to top control module, if first byte is with " first " For particular value, then top control module diagnoses CAN according to data initialization；If first byte is with " second " for special Definite value, top control module sends a frame data frame according to data from diagnosis CAN；If first byte is with " third " For particular value, top control module is according to data initialization communication CAN；If first byte is specific with " fourth " Value, top control module sends a frame data frame according to data from communication CAN；If the message that top control module is after diagnosis CAN receives by screening washer, then will diagnosis CAN report 8 bit data of literary composition are sent to host computer by WIFI module；If top control module receives from communication CAN By the message after screening washer, then 8 bit data of communication CAN message are sent to by WIFI module Host computer；Step 5), continue executing with step 4), carry out Infinite Cyclic operation.
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| CN201610596588.0A CN105974911B (en) | 2016-07-26 | 2016-07-26 | Wifi editions EOL tools and the diagnostic method for utilizing the tool |
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| CN201610596588.0A CN105974911B (en) | 2016-07-26 | 2016-07-26 | Wifi editions EOL tools and the diagnostic method for utilizing the tool |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338986A (en) * | 2016-10-27 | 2017-01-18 | 武汉奥泽电子有限公司 | Multi-device program writing method and system based on high frequency communication |
| CN110493094A (en) * | 2019-08-26 | 2019-11-22 | 中国重汽集团济南动力有限公司 | A kind of All-in-One EOL diagnostic tool radio transfering device |
| WO2021238061A1 (en) * | 2020-05-29 | 2021-12-02 | 南京依维柯汽车有限公司 | Method for improving diagnosis efficiency of automobile offline diagnosis system |
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| US7650199B1 (en) * | 2005-08-03 | 2010-01-19 | Daniel Kadosh | End of line performance prediction |
| CN101788621B (en) * | 2010-03-19 | 2011-11-23 | 北京经纬恒润科技有限公司 | Off-line detecting equipment for automobile electrical appliance system of automobile production line |
| CN102436255B (en) * | 2011-10-12 | 2013-11-27 | 潍柴动力股份有限公司 | EOL (end of line) system and method for automobile component |
| CN202975794U (en) * | 2012-11-27 | 2013-06-05 | 南京直觉科技有限公司 | Portable electric-control diesel engine ECU (Electronic Control Unit) writing system |
| CN205003544U (en) * | 2015-09-28 | 2016-01-27 | 北京经纬恒润科技有限公司 | Automotive production line detecting system that rolls off production line |
| CN205942433U (en) * | 2016-07-26 | 2017-02-08 | 中国重汽集团济南动力有限公司 | EOL instrument of wifi version |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106338986A (en) * | 2016-10-27 | 2017-01-18 | 武汉奥泽电子有限公司 | Multi-device program writing method and system based on high frequency communication |
| CN106338986B (en) * | 2016-10-27 | 2019-05-07 | 武汉奥泽电子有限公司 | Multimachine based on high frequency communications writes with a brush dipped in Chinese ink the method and system of program |
| CN110493094A (en) * | 2019-08-26 | 2019-11-22 | 中国重汽集团济南动力有限公司 | A kind of All-in-One EOL diagnostic tool radio transfering device |
| CN110493094B (en) * | 2019-08-26 | 2021-11-26 | 中国重汽集团济南动力有限公司 | All-in-one EOL diagnostic tool wireless switching device |
| WO2021238061A1 (en) * | 2020-05-29 | 2021-12-02 | 南京依维柯汽车有限公司 | Method for improving diagnosis efficiency of automobile offline diagnosis system |
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| CN105974911B (en) | 2018-10-26 |
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