CN103901341A - DCU test box - Google Patents
DCU test box Download PDFInfo
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- CN103901341A CN103901341A CN201410179352.8A CN201410179352A CN103901341A CN 103901341 A CN103901341 A CN 103901341A CN 201410179352 A CN201410179352 A CN 201410179352A CN 103901341 A CN103901341 A CN 103901341A
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Abstract
The invention provides a DCU test box which comprises a box body and an integrated test harness. The box body is provided with multiple potentiometers, multiple actuator indicator lights, an external power interface, a DCU power interface and a DCU signal transmission interface. The potentiometers and the actuator indicator lights are connected with the DCU signal transmission interface respectively. The external power interface is connected with the DCU power interface through a power inverter. The DCU power interface and the DCU signal transmission interface are connected with a DCU to be tested through the integrated test harness. The integrated test harness is provided with an OBD plug used for being connected with a third-party diagnostic tool. A power switch is arranged between the power inverter and the DCU power interface. The integrated test harness comprises a DCU power line, an OBD line and a DCU signal transmission line. According to the scheme of the DCU test box, wiring is simple, the testing process is visual, a common technician can use the DCU test box conveniently, the testing time is short, cost is low, and popularization and use are convenient.
Description
Technical field
The present invention relates to a kind of test box, specifically a kind of for state four vehicle SCR after-treatment system DCU(Dosing Control Unit, urea-spray control module) DCU test box.
Background technology
For guaranteeing quality and the usability of car load, DCU needs to test before its Assembling Production.And at present, the test of DCU ECU (Electrical Control Unit) is not still had to systematic testing tool, and conventional testing tool has two kinds: the one, and connect all parts by wire harness and judge whether short circuit or the fault opening circuit, now need to use a large amount of wire harness to carry out connection, complex circuit.And while using this instrument test, first will get rid of wire harness problem, guarantee that wire harness connects normal, not only cost is high, and often because wire harness redundancy takies more space, not Portable belt; The 2nd, use oscillograph, multimeter to measure each test point on circuit board, it needs professional to test, and the test used time is longer, and cost is also higher.This is the deficiencies in the prior art part.
Summary of the invention
The technical problem to be solved in the present invention is, for the deficiencies in the prior art part, the technical scheme of DCU test box is provided, this scheme wiring is simple, test is directly perceived, and avoid in prior art, needing to use by professional the use of the mode of each test point on oscillograph, multimeter metering circuit plate, be convenient to those of ordinary skill and use, and Measuring Time is short, cost is low, is convenient to promote the use of.
In order to solve the problems of the technologies described above, the invention provides following DCU test box, comprise casing and integration testing wire harness; Casing is provided with multiple potentiometers, multiple actuator pilot lamp, external power source interface, DCU power interface and DCU signal transmission interface, described potentiometer is connected with DCU signal transmission interface respectively with actuator pilot lamp, external power source interface is connected with DCU power interface by a power supply changeover device, and power supply changeover device is arranged in casing; Described DCU power interface is connected with DCU to be measured by described integration testing wire harness respectively with DCU signal transmission interface, described integration testing wire harness is provided with the OBD(Onboard Diagnosis for connecting third-party diagnostic tool, On-Board Diagnostics (OBD)) diagnostic plug.
When use, simulate the working environment of DCU to be measured by changing the resistance value of each potentiometer, simulate by actuator pilot lamp each actuator that DCU to be measured controls, and the corresponding control circuit of the bright DCU to be measured of actuator pilot lamp can normally work, otherwise cannot normally work.In addition, the resistance value of each potentiometer can be transferred to third-party diagnostic tool by integration testing wire harness, be convenient to third-party diagnostic tool the signal output apparatus of DCU to be measured is diagnosed.Simple in structure, easy to use.
Between power supply changeover device and DCU power interface, be provided with power switch, described power switch is arranged on casing.
Described integration testing wire harness comprises DCU power lead, OBD(On-Board Diagnostics (OBD)) diagnostics lines and DCU signal transmssion line, one end of DCU power lead is provided with the DCU attaching plug for connecting DCU power interface, one end of OBD diagnostics lines is provided with described OBD diagnostic plug, one end of DCU signal transmssion line is provided with the DCU signal transmission plug for connecting DCU signal transmission interface, and the connection terminal of the other end of described DCU power lead, OBD diagnostics lines and DCU signal transmssion line is arranged on same DCU Signal plug.
Described casing is provided with CAN communication interface, and described CAN communication interface is connected with DCU signal transmission interface.
Described potentiometer comprises urea temperature potentiometer, urea level potentiometer, urea pressure potentiometer and exhaust temperature potentiometer, and each potentiometer is connected with DCU signal transmission interface respectively.
Described actuator pilot lamp comprises nozzle operation pilot lamp, pump work pilot lamp, pipeline heating pilot lamp, casing burner on light and pump box burner on light, and described nozzle operation pilot lamp, pump work pilot lamp, pipeline heating pilot lamp, casing burner on light and pump box burner on light are connected with DCU signal transmission interface respectively.
Described casing is provided with handle, thereby is convenient to movement of the present invention.
Described handle is provided with protective layer.The use of protective layer can effectively prevent opponent's injury.
Described protective layer is rubber layer or plastic layer.
Compared with prior art scheme, the invention has the advantages that:
(1) use of integration testing wire harness, overcome in prior art the drawback that connects all parts and judge whether short circuit or open circuit fault by wire harness, this has been avoided easily causing while connection by a large amount of wire harness in prior art the drawback of wiring confusion, easy to use, thereby shorten setting up time, improved testing efficiency;
(2) be provided with plug at the two ends of integration testing wire harness, and integration testing wire harness only can be realized the present invention by a connector and be connected with the signal of DCU to be measured, wiring is simple, thereby shorten setting up time, improved wiring efficiency, and then improve testing efficiency, also reduced production cost, be convenient to promote the use of;
(3) be provided with plug at the two ends of integration testing wire harness, on casing, be provided with the relevant interface being used in conjunction with, be convenient to being connected and dismounting of integration testing wire harness and casing, thereby be convenient to the local replacing of integration testing wire harness or casing, economy is practical again;
(4) the present invention is provided with potentiometer on casing, potentiometer communicates by integration testing wire harness and DCU to be measured, and integration testing wire harness is provided with the OBD diagnostic plug for connecting third-party diagnostic tool, when use, be communicated with DCU to be measured and potentiometer and third-party diagnostic tool by integration testing wire harness, simulate the working environment of DCU to be measured by changing the resistance value of each potentiometer, integration testing wire harness in this programme has the effect of signal transmission passage, the resistance value of each potentiometer can be transferred to third-party diagnostic tool, so that third-party diagnostic tool diagnoses out each potentiometer whether to have the variation of resistance value, near and be convenient to the signal input circuit that third-party diagnostic tool tests out DCU to be measured and whether can normally use, simple in structure, easy to use,
(5) the present invention is provided with actuator pilot lamp on casing, actuator pilot lamp is simulated each actuator that DCU to be measured controls, each actuator pilot lamp communicates by integration testing wire harness and DCU to be measured respectively, and integration testing wire harness is provided with the OBD diagnostic plug for connecting third-party diagnostic tool, when use, be communicated with DCU to be measured and actuator pilot lamp and third-party diagnostic tool by integration testing wire harness, when use, integration testing wire harness of the present invention has the effect of third-party diagnostic tool control signal transmission channels, under the control action of DCU to be measured, respective actuators pilot lamp is bright or go out, thereby whether the signal output apparatus of testing DCU to be measured by the light on and off of actuator pilot lamp can normally use, simple in structure, cost is low and easy to use, the use of actuator pilot lamp has simultaneously increased the intuitive that tester tests observation.
As can be seen here, the present invention compared with prior art, has outstanding substantive distinguishing features and significant progressive, and the beneficial effect of its enforcement is also apparent.
Accompanying drawing explanation
Fig. 1 is the front view schematic diagram of casing of the present invention.
Fig. 2 is the rear view schematic diagram of casing of the present invention.
Fig. 3 is structure composition schematic diagram of the present invention.
Fig. 4 is electrical schematic diagram of the present invention.
Wherein: 1, casing, 2, integration testing wire harness, 3, DCU power lead, 4, DCU signal transmssion line, 5, OBD diagnostics lines, 6, DCU attaching plug, 7, DCU signal transmission plug, 8, OBD diagnostic plug, 9, DCU Signal plug, 10, power supply changeover device, 11, DCU signal transmission interface, 12, DCU power interface, 13, external power source interface, 14, power switch pilot lamp, 15, actuator pilot lamp, 16, potentiometer, 17, CAN1 communication interface, 18, CAN2 communication interface, 19, spread signal switch, 20, handle, 21, protective layer, 22, power switch.
Embodiment
For ease of explanation, below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, DCU test box of the present invention, comprises casing 1 and integration testing wire harness 2; Casing 1 is provided with 12 and 1 DCU signal transmission interface 11 of 13,1 DCU power interface of 15,1 external power source interface of 16,5 actuator pilot lamp of 4 potentiometers, described potentiometer 16 is connected with DCU signal transmission interface 11 respectively with actuator pilot lamp 15, external power source interface 13 is connected with DCU power interface 12 by a power supply changeover device 10, and power supply changeover device 10 is arranged in casing 1; Described DCU power interface 12 and DCU signal transmission interface 11 are connected with DCU to be measured by described integration testing wire harness 2 respectively, and described integration testing wire harness 2 is provided with the OBD diagnostic plug 8 for connecting third-party diagnostic tool.
Between power supply changeover device 10 and DCU power interface 12, be provided with power switch 22, described power switch 22 is arranged on casing 1.Between described power switch 22 and DCU power interface 12, be provided with power switch pilot lamp 14, and power switch pilot lamp 14 is arranged on casing 1.
Wherein, power supply changeover device 10 can be arranged on the optional position in casing 1, specifically can carry out its set positions according to the distribution situation of casing 1 connection wire bundle, easy to use and flexible.
Wherein, in the above-described embodiment, described third-party diagnostic tool is the diagnostic tool that rolls off the production line, and in addition, above-mentioned third-party diagnostic tool can also be OBD diagnostic tool.
Wherein, what described power supply changeover device 10 adopted is that universal 220V is exchanged to the power supply changeover device that is converted to 24V direct-current switch power supply, and when use, this power supply changeover device 10 is converted to the alternating current of 220V in the direct current of 24V, is the present invention and DCU to be measured power supply.And can be the present invention and DCU normal power supply to be measured time, power switch pilot lamp 14 is bright, otherwise can not normal power supply.Whether normal the use of power switch pilot lamp 14, be convenient to observe intuitively power supply.
Wherein, above-mentioned integration testing wire harness 2 comprises DCU power lead 3, DCU signal transmssion line 4 and OBD diagnostics lines 5, one end of DCU power lead 3 is provided with the DCU attaching plug 6 for connecting DCU power interface 12, one end of DCU signal transmssion line 4 is provided with the DCU signal transmission plug 7 for connecting DCU signal transmission interface 11, one end of OBD diagnostics lines 5 is connected with above-mentioned OBD diagnostic plug 8, and the connection terminal of the other end of described DCU power lead 3, DCU signal transmssion line 4 and OBD diagnostics lines 5 is arranged on same DCU Signal plug 9.
Wherein, in view of the DCU in state's four vehicle SCR after-treatment systems needs the working environment state of real-time perception SCR after-treatment system, as urea temperature, urea level, urea pressure and exhaust temperature, for this reason, above-mentioned potentiometer 16 comprises urea temperature potentiometer, urea level potentiometer, urea pressure potentiometer and exhaust temperature potentiometer, and adopt successively Turea urea temperature potentiometer, Lurea urea level potentiometer, Purea urea pressure potentiometer and Tpre exhaust temperature potentiometer, and each potentiometer is connected with DCU signal transmission interface respectively.Simulate the working environment state of DCU to be measured by above-mentioned potentiometer 16, and be transferred to DCU to be measured, as the testing source of third-party diagnostic tool, easy to use.
In addition, according to the actual controlled actuator kind of the DCU in state's four vehicle SCR after-treatment systems, above-mentioned actuator pilot lamp 15 comprises nozzle operation pilot lamp, pump work pilot lamp, pipeline heating pilot lamp, casing burner on light and pump box burner on light, and described nozzle operation pilot lamp, pump work pilot lamp, pipeline heating pilot lamp, casing burner on light and pump box burner on light are connected with DCU signal transmission interface respectively.When use, use third-party diagnostic tool to send instruction by the present invention to DCU to be measured, such as test nozzles partial circuit, diagnostic tool sends the instruction of nozzle operation, DCU to be measured receives this corresponding instruction, closed-nozzle operating circuit, and now nozzle pilot lamp is bright, its corresponding circuit can normally be worked, otherwise has fault.
In addition, the present invention is provided with handle 20 on its casing 1, and is provided with rubber layer protective layer 21 on handle 20, thereby is convenient to movement of the present invention, is convenient to opponent's protection simultaneously.
When use, casing 1 is connected with integration testing wire harness 2, the DCU Signal plug 9 of integration testing wire harness 2 is connected with the signaling interface of above-mentioned DCU to be measured simultaneously, OBD diagnostic plug 8 is connected and can be used with third-party diagnostic tool simultaneously.
To sum up, the present invention can provide analog power for DCU to be measured, can be used in the signal source of test DCU signal input to be measured is provided, can also provide the passage of the signal output of test DCU to be measured, be convenient to work in coordination with the test to DCU to be measured with third-party diagnostic tool, simple in structure, easy to use, practical.
In addition, above-mentioned casing 1 is provided with CAN communication interface, is specially CAN1 communication interface 17 and CAN2 communication interface 18, and CAN1 communication interface 17 is connected respectively described DCU signal transmission interface with CAN2 communication interface 18.In the time that DCU occurs that CAN bus data sends problem, available CAN bus diagnostic instrument reads the data analysis that DCU sends, and solves failure problems.
In addition, on above-mentioned casing 1, be preset with a spread signal switch 19, treat that other function of later stage is used.
The above, it is only preferred embodiments of the present invention, not in order to limit the present invention, any those skilled in the art, in any simple modification, equivalent variations and the modification that do not depart from the content of technical solution of the present invention, according to technical spirit of the present invention, above embodiment done, all belong to the scope of technical solution of the present invention.
Claims (9)
1.DCU test box, is characterized in that: comprise casing and integration testing wire harness; Casing is provided with multiple potentiometers, multiple actuator pilot lamp, external power source interface, DCU power interface and DCU signal transmission interface, described potentiometer is connected with DCU signal transmission interface respectively with actuator pilot lamp, external power source interface is connected with DCU power interface by a power supply changeover device, and power supply changeover device is arranged in casing; Described DCU power interface and DCU signal transmission interface are connected with DCU to be measured by described integration testing wire harness respectively, and described integration testing wire harness is provided with the OBD diagnostic plug for connecting third-party diagnostic tool.
2. DCU test box according to claim 1, is characterized in that: between power supply changeover device and DCU power interface, be provided with power switch, described power switch is arranged on casing.
3. DCU test box according to claim 1 and 2, it is characterized in that: described integration testing wire harness comprises DCU power lead, OBD diagnostics lines and DCU signal transmssion line, one end of DCU power lead is provided with the DCU attaching plug for connecting DCU power interface, one end of OBD diagnostics lines is provided with described OBD diagnostic plug, one end of DCU signal transmssion line is provided with the DCU signal transmission plug for connecting DCU signal transmission interface, and the connection terminal of the other end of described DCU power lead, OBD diagnostics lines and DCU signal transmssion line is arranged on same DCU Signal plug.
4. DCU test box according to claim 1 and 2, is characterized in that: described casing is provided with CAN communication interface, described CAN communication interface is connected with DCU signal transmission interface.
5. DCU test box according to claim 1 and 2, it is characterized in that: described potentiometer comprises urea temperature potentiometer, urea level potentiometer, urea pressure potentiometer and exhaust temperature potentiometer, each potentiometer is connected with DCU signal transmission interface respectively.
6. DCU test box according to claim 1 and 2, it is characterized in that: described actuator pilot lamp comprises nozzle operation pilot lamp, pump work pilot lamp, pipeline heating pilot lamp, casing burner on light and pump box burner on light, described nozzle operation pilot lamp, pump work pilot lamp, pipeline heating pilot lamp, casing burner on light and pump box burner on light are connected with DCU signal transmission interface respectively.
7. DCU test box according to claim 1 and 2, is characterized in that: described casing is provided with handle.
8. DCU test box according to claim 7, is characterized in that: described handle is provided with protective layer.
9. DCU test box according to claim 8, is characterized in that: described protective layer is rubber layer or plastic layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179352.8A CN103901341A (en) | 2014-04-29 | 2014-04-29 | DCU test box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179352.8A CN103901341A (en) | 2014-04-29 | 2014-04-29 | DCU test box |
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| CN103901341A true CN103901341A (en) | 2014-07-02 |
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| CN201410179352.8A Pending CN103901341A (en) | 2014-04-29 | 2014-04-29 | DCU test box |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181918A (en) * | 2014-09-19 | 2014-12-03 | 中国重汽集团济南动力有限公司 | DCU electrical control unit testing system |
| CN106646024A (en) * | 2016-11-03 | 2017-05-10 | 谢梦 | Rapid line tester |
| CN107989679A (en) * | 2017-12-23 | 2018-05-04 | 无锡威孚力达催化净化器有限责任公司 | Diesel engine after treatment control system test device |
| CN108170129A (en) * | 2017-12-29 | 2018-06-15 | 凯龙高科技股份有限公司 | A kind of controller develops test platform |
| CN108388239A (en) * | 2018-04-25 | 2018-08-10 | 中国重汽集团济南动力有限公司 | A kind of device of test engine electronic control unit function |
| CN109253802A (en) * | 2017-07-13 | 2019-01-22 | 南京理工大学 | A kind of multispectral polarization synchronous of bionic navigation and method |
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| JPH0548425A (en) * | 1991-08-12 | 1993-02-26 | Fujitsu Ltd | Transmission test method for feed termination system for logic circuit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181918A (en) * | 2014-09-19 | 2014-12-03 | 中国重汽集团济南动力有限公司 | DCU electrical control unit testing system |
| CN106646024A (en) * | 2016-11-03 | 2017-05-10 | 谢梦 | Rapid line tester |
| CN109253802A (en) * | 2017-07-13 | 2019-01-22 | 南京理工大学 | A kind of multispectral polarization synchronous of bionic navigation and method |
| CN109253802B (en) * | 2017-07-13 | 2021-10-26 | 南京理工大学 | Bionic navigation multispectral polarization synchronous acquisition system and method |
| CN107989679A (en) * | 2017-12-23 | 2018-05-04 | 无锡威孚力达催化净化器有限责任公司 | Diesel engine after treatment control system test device |
| CN108170129A (en) * | 2017-12-29 | 2018-06-15 | 凯龙高科技股份有限公司 | A kind of controller develops test platform |
| CN108388239A (en) * | 2018-04-25 | 2018-08-10 | 中国重汽集团济南动力有限公司 | A kind of device of test engine electronic control unit function |
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Application publication date: 20140702 |