CN206523784U - A kind of ECU broken string boxes and automotive networking integrated test system - Google Patents
A kind of ECU broken string boxes and automotive networking integrated test system Download PDFInfo
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- CN206523784U CN206523784U CN201720215638.6U CN201720215638U CN206523784U CN 206523784 U CN206523784 U CN 206523784U CN 201720215638 U CN201720215638 U CN 201720215638U CN 206523784 U CN206523784 U CN 206523784U
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Abstract
The utility model is related to a kind of ECU broken string boxes and automotive networking integrated test system.The ECU broken strings box is based on CAN remote control, including：Relay group, single-chip microcomputer, CAN transceiver circuit, broken string box power supply circuit.The automotive networking integrated test system includes personal computer and programmable power supply, and the automotive networking integrated test system also includes multiple ECU broken string boxes, and the multiple ECU broken strings box is that daisy chain is connected；The multiple ECU broken string boxes are powered by described program control power supply, and are connected with a CAN.
Description
Technical field
The utility model is related to vehicle electronics field, and in particular to for automotive networking test ECU broken string box and
Automotive networking integrated test system.
Background technology
With the development of auto industry, Hyundai Motor more and more intelligent, hommization, control unit control mode is increasingly
It is complicated.On this basis, for the control system of automobile, electronic control unit (ECU, the Electronic used
Control Unit) quantity is also more and more.Each automobile is required for carrying out careful comprehensive detection before as product, because
And in automotive networking integration testing, because ECU quantity is more, connection power supply and the comparatively laborious complexity of bus.
Existing failure input test method has two kinds, and one kind is, using manually operated, to carry out workload during single-piece test
Still receive, but workload is very big during progress whole integration testing, and the test of automation can not be realized.Another side
Formula is the automatic test carried out using relay, by I/O data signals come control relay, to provide failure input.But
When carrying out automobile bus test, the complexity of hardware corridor can be increased by adding the operations such as I/O controls, while also increasing programming
Complexity.Simultaneously because the finiteness of I/O resources, limits the autgmentability of broken string box.Either manually or certainly
, it is necessary to testing procedure in real time to specifying ECU to carry out power-on and power-off, disconnect bus, also direct fault location is (all in dynamic test process
Such as, total short-circuit between conductors, bus is to power supply or ground short circuit, and ECU loses ground or power supply) etc. operation.
In addition, existing automotive networking integration testing generally puts ECU on experimental bench with broken string box, line is complicated and miscellaneous
Disorderly without chapter.
Utility model content
To solve said one or multiple problems, the utility model provide it is a kind of based on controller local area network (CAN,
Controller Area Network) bus remote control ECU broken string box.The broken string box is mainly used in automobile CAN/LIN nets
During network integration testing, the failures such as deenergization/ground, disconnection CAN/LIN, short circuit are provided for any ECU in CAN/LIN networks defeated
Enter.For multiple ECU broken string boxes, then daisy chain connection can be achieved, each broken string box has the address that can flexibly set, side
Just independent control.After all broken string box networkings, it is controlled using special CAN all the way, wiring is flexible, and mounting arrangements
It is convenient.
And relay group, single-chip microcomputer and CAN transceiver are encapsulated in broken string box, pass through CAN message remote control correspondence
Broken string box in relay status, thus can by control break box program be embedded in automobile bus test program
In, real-time failure input can be accomplished, Automobile Network System automatic test is realized, not only stablized but also flexible, and extension is convenient.This
Outside, and the design by break box hang to U-shaped rail, line is simple and line clear is clean and tidy.
To solve said one or multiple problems, the utility model provides following technical scheme.
A kind of ECU broken strings box, the ECU broken strings box is based on CAN remote control, it is characterised in that including：Relay
Group, including multiple relays, the relay group can provide the failure input to CAN/LIN lines；Single-chip microcomputer, the single-chip microcomputer
State for parsing each relay in control relay group after the message that CAN transceiver is received；CAN transceiver circuit, bag
CAN transceiver and terminal resistance are included, the CAN transceiver circuit determines whether to connect the terminal electricity by outside toggle switch
Resistance, the CAN transceiver circuit is with the message on then transmitting-receiving control CAN and is supplied to the single-chip microcomputer to be parsed；Broken string
Box power supply circuit, is electrically connected with the single-chip microcomputer, relay and CAN transceiver, and is received for the single-chip microcomputer, relay and CAN
Hair device is powered.
The failure input includes：Short circuit, the open circuit of CAN/LIN lines between CAN/LIN line short circuit power supplys or ground, CAN lines,
The open circuit of KL15/KL30 electricity and/or the open circuit of ground wire.
The ECU broken string boxes back includes multiple necks, and the neck is used to accommodate card.
A kind of automotive networking integrated test system, it is characterised in that the automotive networking integrated test system includes individual
Computer and programmable power supply, the automotive networking integrated test system also include any in multiple 1-3 according to claim
ECU broken string boxes described in, the multiple ECU broken string boxes connect for daisy chain；The multiple ECU breaks box by described program control
Power supply processed is powered, and is connected with a CAN.
Brief description of the drawings
Fig. 1 is according to connection diagram inside and out ECU of the present utility model broken string boxes；
Fig. 2 is the back schematic diagram of broken string box；
Fig. 3 is the schematic diagram that interconnects between ECU broken string boxes；
Fig. 4 is the control principle drawing of broken string box.
Wherein accompanying drawing is that content of the present utility model is schematically illustrated, not using content shown in the drawings to this
The content of utility model is specifically limited.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is described in detail embodiment.
The utility model provides a kind of ECU broken string boxes based on CAN remote control.ECU broken string box it is interior
Portion's schematic diagram refers to each signal in Fig. 1, broken string box 1 and separates two ports (except connection ECU ports), it would be desirable to test
ECU be connected on broken string box 1, with first group of normally closed relay 2 and second group of normally closed relay 3 on the circuit of ECU connections.Such as
Shown in Fig. 3, breaking can be interconnected between box BOB1, BOB2 and BOB3 by way of daisy chain.Such mutual contact mode
The grid-connected of ECU is simply and easily realized, ECU is changed in such connected mode and is convenient to.
The multiple necks 21 and 22 of box back designs as shown in Fig. 2 ECU breaks.Card 23 and 24 can be moved flexibly, will
Broken string box is hung to slide rail, and mobile card 23 and 24 makes broken string box be fixed on U-shaped rail, and the connection of multiple broken string boxes can be achieved with
Aligned transfer.
Broken string box passes through CAN remote control.As shown in figure 1, the inside of the broken string box 1 contains 17 relays.
Each broken string box has address toggle switch 11, changes toggle switch 11 to determine the address of broken string box.In control CAN
Send CAN signal to be in real time controlled relay, so as to realize ECU power-on and power-off, disconnect bus, also direct fault location
Operations such as (total short-circuits between conductors, bus is to electricity or ground short circuit, and ECU loses ground or electricity), can complete system integrating test and system
Automatic test.
ECU broken string boxes are mainly made up of following four part：Relay group, by 17 relay groups into main effect is
To the input of the failures of CAN/LIN lines, including CAN/LIN line short circuit power supplys or ground, the short circuit between CAN lines, CAN/LIN lines it is disconnected
Road, the open circuit of KL15/KL30 electricity, open circuit of ground wire etc.；Single-chip microcomputer, major function is parsed after the message that CAN transceiver is received
The state of each relay in control relay group；CAN transceiver circuit, is made up of CAN transceiver and terminal resistance 12, passes through
Outside toggle switch decides whether to connect terminal resistance 12, and major function is the message on transmitting-receiving control CAN and is supplied to monolithic
Machine is parsed；Break box power supply circuit, is externally supplied 6-36V direct current, to the single-chip microcomputer in broken string box, relay, CAN
Transceiver is powered, it is ensured that normal work.
The real work flow of broken string box is as follows：ECU is connected on broken string box by Fig. 2, the dial-up on adjustment broken string box
Switch 11, makes the corresponding broken string boxes of each ECU have different addresses, and before the test of progress, a CAN is configured to broken string box
Bus is the control CAN of broken string box.
As shown in figure 4, writing control program in personal computer (PC), all broken string boxes are hung to control CAN
On, the signal for controlling CAN to send in control message, every CAN message by the box that breaks includes the address signal of broken string box, after
The status signal of electrical equipment, can be parsed when broken string box is received after CAN message, and each broken string box has corresponding address, such as
Address in fruit control CAN message is as the address of this broken string box toggle switch, and single-chip microcomputer will be according to the relay parsed
Device control signal is controlled to relay group, so that the power-on and power-off to ECU are realized, the operation such as direct fault location.Need to remove event
During barrier, a control message is retransmited, the address signal for the box that breaks is constant, only need to change corresponding relay signal, so may be used
Easily to control the time of direct fault location.When carrying out multiple ECU direct fault locations, it is only necessary to continuously transmit several control messages,
Change the address signal and relay status signal in message, just can control corresponding ECU direct fault location.Generally make one
Panel, by the relay status signal in message, address signal is sent on order association to panel, by guidance panel
Button and input frame automanual can just realize ECU power-on and power-off, and direct fault location etc. is operated.Carrying out system automation test
When, it is only necessary to by the message Embedded test program of control, config. number broken string box address signal and relay status are believed in message
Number, automation is can be achieved with test process.
When break box quantity than it is larger when two-way CAN need to be divided into (more than 64) be controlled.
Claims (4)
- A kind of box 1. ECU breaks, the ECU broken strings box is based on CAN remote control, it is characterised in that including：Relay group, including multiple relays, the relay group can provide the failure input to CAN/LIN lines；Single-chip microcomputer, the single-chip microcomputer is used to parse after the message that CAN transceiver is received each relay in control relay group State；CAN transceiver circuit, including CAN transceiver and terminal resistance, the CAN transceiver circuit pass through outside toggle switch Determine whether to connect the terminal resistance, the CAN transceiver circuit is used for the message received and dispatched on control CAN and is supplied to the list Piece machine is parsed；Break box power supply circuit, is electrically connected with the single-chip microcomputer, relay and CAN transceiver, and is the single-chip microcomputer, relay Powered with CAN transceiver.
- The box 2. ECU according to claim 1 breaks, it is characterised in that the failure input includes：CAN/LIN line short circuits Short circuit, the open circuit of CAN/LIN lines, the open circuit of KL15/KL30 electricity and/or the open circuit of ground wire between power supply or ground, CAN lines.
- The box 3. ECU according to claim 1 breaks, it is characterised in that the ECU broken string boxes back includes multiple necks, The neck is used to accommodate card.
- 4. a kind of automotive networking integrated test system, it is characterised in that the automotive networking integrated test system includes personal count Calculation machine and programmable power supply, the automotive networking integrated test system also include multiple according to any one of claim 1-3 Described ECU broken string boxes, the multiple ECU broken string boxes connect for daisy chain；The multiple ECU breaks box by described program control Power supply is powered, and is connected with a CAN.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720215638.6U CN206523784U (en) | 2017-03-07 | 2017-03-07 | A kind of ECU broken string boxes and automotive networking integrated test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720215638.6U CN206523784U (en) | 2017-03-07 | 2017-03-07 | A kind of ECU broken string boxes and automotive networking integrated test system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108614133A (en) * | 2018-05-23 | 2018-10-02 | 北京新能源汽车股份有限公司 | Wire breakage box and vehicle detection system |
| CN109799809A (en) * | 2019-01-28 | 2019-05-24 | 北京新能源汽车股份有限公司 | Fault injection circuit and method for ECU (electronic control Unit) test and ECU test system |
| CN111983999A (en) * | 2020-09-08 | 2020-11-24 | 上海星融汽车科技有限公司 | Central ECU development test system |
| CN114513220A (en) * | 2021-12-31 | 2022-05-17 | 上海易咖智车科技有限公司 | Communication switching device |
-
2017
- 2017-03-07 CN CN201720215638.6U patent/CN206523784U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108614133A (en) * | 2018-05-23 | 2018-10-02 | 北京新能源汽车股份有限公司 | Wire breakage box and vehicle detection system |
| CN108614133B (en) * | 2018-05-23 | 2021-01-01 | 北京新能源汽车股份有限公司 | Wire breakage box and vehicle detection system |
| CN109799809A (en) * | 2019-01-28 | 2019-05-24 | 北京新能源汽车股份有限公司 | Fault injection circuit and method for ECU (electronic control Unit) test and ECU test system |
| CN111983999A (en) * | 2020-09-08 | 2020-11-24 | 上海星融汽车科技有限公司 | Central ECU development test system |
| CN114513220A (en) * | 2021-12-31 | 2022-05-17 | 上海易咖智车科技有限公司 | Communication switching device |
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