CN107076981B - For vehicle diagnostics/programming interface integrated circuit and vehicle diagnostic device - Google Patents
For vehicle diagnostics/programming interface integrated circuit and vehicle diagnostic device Download PDFInfo
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- CN107076981B CN107076981B CN201480078102.3A CN201480078102A CN107076981B CN 107076981 B CN107076981 B CN 107076981B CN 201480078102 A CN201480078102 A CN 201480078102A CN 107076981 B CN107076981 B CN 107076981B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
Abstract
It is a kind of for vehicle diagnostics/programming interface integrated circuit and including the vehicle diagnostic device of the interface integrated circuit, and a kind of communication means carried out data transmission between microprocessor and onboard diagnostic system by above-mentioned interface integrated circuit and corresponding communication system, interface integrated circuit (200) includes: communication control unit (110), including multiple communication protocol nucleus modules, each communication protocol nucleus module carries out signal conversion according to a communication protocol, and each communication protocol nucleus module can be inquired in vehicle condition and parameter setting mode, switch between vehicle condition obtaining mode；And port driving unit (120), including multiple drivers, each driver of multiple driver includes multiple drive modules, the correspondingly connected corresponding communication protocol nucleus module into the communication control unit (110) of multiple drive module and the signal level requirement that appropriate conversion is carried out to signal level to meet different communication protocol, make it possible to obtain any collocation of the transmitting-receiving of the signal of various communications protocols, so as to flexibly be adapted to various.
Description
Technical field
This patent disclosure relates generally to field of vehicle diagnostics, more particularly relate to vehicle diagnostics/programming Interface integration electricity
Road and vehicle diagnostic device including the interface integrated circuit.
Moreover, it relates to it is a kind of by above-mentioned interface integrated circuit microprocessor and onboard diagnostic system it
Between the communication means that carries out data transmission and corresponding communication system.
Background technique
With the development of science and technology, the complexity of vehicle increases increasingly, application of the electron controls technology on vehicle is also increasingly
Extensively and profoundly.For the ease of the situation of the vehicle equipped with electronic control unit (Electronic Control Unit, ECU)
Diagnosis, developed onboard diagnostic system (on-board diagnostics, OBD) and vehicle diagnostic device.It is examined in vehicle
In disconnected, vehicle diagnostic device passes through the vehicle diagnostics/programming interface being arranged on vehicle and OBD is established and communicated to connect, and sends to OBD
Vehicle condition inquires signal and parameter setting signal, and receives vehicle condition from OBD and characterize signal.However, different types of
Vehicle diagnostics/programming interface on vehicle often supports different communication protocol, not only results in the need for according to different communication protocols
View designs different interface circuits, and current vehicle diagnostic device is made to lack versatility.
Summary of the invention
In order to improve the versatility of vehicle diagnostic equipment and realize other purposes, the present invention is made.
On the one hand, the present invention provides a kind of for vehicle diagnostics/programming interface integrated circuit, the interface integrated circuit quilt
It is connected between the microprocessor an of outside and vehicle diagnostics/programming interface of an outside, the vehicle diagnostics/programming interface
It is further coupled to onboard diagnostic system, diagnose/program to Vehicle Electronic Control Unit, the interface integrated circuit packet
It includes:
One communication control unit, the communication control unit include multiple communication protocol nucleus modules, each communication protocol
Nucleus module sends and receivees data according to a kind of communication protocol, and each communication protocol nucleus module can be in vehicle condition
Switch between inquiry and parameter setting mode and vehicle condition obtaining mode；And
A port driving unit, the port driving unit include each of multiple drivers, multiple driver
Driver all includes multiple drive modules, and multiple drive modules in each driver are respectively correspondingly connected to the communication control
Corresponding multiple communication protocol nucleus modules in unit processed；
For the communication control unit, in vehicle condition inquiry and parameter setting mode, each communication protocol core mould
Block receives the vehicle condition inquiry signal for meeting corresponding communication protocol and/or parameter setting signal from microprocessor, by it
It is converted into being suitble to by the correspondingly connected received vehicle condition inquiry signal of drive module institute and/or parameter setting signal then
It is sent to correspondingly connected drive module；In vehicle condition obtaining mode, each communication protocol nucleus module reception is come from
The vehicle condition characterization signal for meeting corresponding communication protocol of correspondingly connected drive module, converts thereof into and is suitble to by micro- place
The received vehicle condition characterization signal of reason device is then sent to the microprocessor；
For the port driving unit, in vehicle condition inquiry and parameter setting mode, each drive module is received
The vehicle condition inquiry signal for meeting corresponding communication protocol or parameter from correspondingly connected communication protocol nucleus module are set
The signal level that the vehicle condition inquires signal or parameter setting signal is converted into being suitble to by onboard diagnostic system by confidence number
The signal level of processing, and the vehicle condition by conversion is inquired into signal or parameter setting signal and is examined by vehicle
Disconnected/programming interface is sent to onboard diagnostic system；In the vehicle condition obtaining mode, each drive module is received via vehicle
Diagnosis/programming interface characterizes signal from the vehicle condition of onboard diagnostic system, by the signal electricity of vehicle condition characterization signal
Flat turn, which changes into, to be suitble to by the signal level of correspondingly connected communication protocol nucleus module and microprocessor processes, and will be through
The vehicle condition characterization signal for crossing conversion is sent to correspondingly connected communication protocol nucleus module.
In a preferred embodiment, wherein multiple communication protocol nucleus module of the communication control unit includes
HSCAN nucleus module, SWCAN nucleus module, LSCAN nucleus module, J1708 nucleus module, J1850-PWM nucleus module,
Two or more in J1850-VPW nucleus module, KSCI nucleus module and KN nucleus module, accordingly, port driving
Multiple drive module of each driver of unit includes HSCAN drive module, SWCAN drive module, LSCAN driving mould
Block, J1708 drive module, J1850-PWM drive module, J1850-VPW drive module, K/SCI drive module and KN drive mould
Two or more in block.
In a preferred embodiment, which further includes Digital Logic control unit, the Digital Logic
Control unit is connect with the communication control unit and the port driving unit, carries out communication channel to control the port driving unit
Selection be connected and control the communication control unit carry out communication pattern selection.
In a preferred embodiment, which further includes program voltage unit, the program voltage unit
It is connect with the Digital Logic control unit, required work electricity is programmed to Vehicle Electronic Control Unit for generating
Pressure.
In a preferred embodiment, which further includes internal electric source unit, the internal electric source unit
It connect with each unit inside interface integrated circuit, is worked with generating this for vehicle diagnostics/programming interface integrated circuit
Required voltage.
In a preferred embodiment, which further includes analog-to-digital conversion sampling unit, the analog-to-digital conversion
Sampling unit is connect with the Digital Logic control unit and the communication control unit, will be from the table of onboard diagnostic system
The analog signal of sign vehicle condition carries out being sampled and transformed into digital signal.
In a preferred embodiment, which further includes over-temperature protection unit, the over-temperature protection unit
It is connected to the Digital Logic control unit, to detect the temperature for vehicle diagnostics/programming interface integrated circuit, and
When detecting that this is used for the temperature of vehicle diagnostics/programming interface integrated circuit more than threshold value, issues and indicate that this is used for vehicle and examines
The signal that the interface integrated circuit entirety of disconnected/programming or its other internal unit stop working.
On the other hand, the present invention also provides a kind of vehicle diagnostic devices, are used for vehicle diagnostics/programming interface including above-mentioned
Integrated circuit.
Yet another aspect, the present invention also provides a kind of communication means, for single by communication control unit and port driving
Member carries out data communication between a microprocessor and an onboard diagnostic system, which includes multiple communications
Protocol core module, each communication protocol nucleus module send and receive data, and each communication according to a kind of communication protocol
Protocol core module can switch between vehicle condition inquiry and parameter setting mode and vehicle condition obtaining mode；The end
Mouth driving unit includes multiple drivers, and each of multiple driver driver all includes multiple drive modules, each
Multiple drive modules in driver are respectively correspondingly connected to corresponding multiple communication protocols in the communication control unit
Nucleus module；The communication means is characterized in that,
In vehicle condition inquiry and parameter setting mode,
(1) each communication protocol nucleus module in communication control unit, which is received, meets respective communication from microprocessor
The vehicle condition inquiry signal and/or parameter setting signal of agreement, convert thereof into and are suitble to by correspondingly connected drive module
The received vehicle condition inquiry signal of institute and/or parameter setting signal, are then sent to correspondingly connected drive module；
(2) each drive module, which is received, meets corresponding communication protocol from correspondingly connected communication protocol nucleus module
Vehicle condition inquiry signal or parameter setting signal, the vehicle condition is inquired to the signal electricity of signal or parameter setting signal
Flat turn changes the signal level for being suitble to be handled by onboard diagnostic system into, and the vehicle condition by conversion is inquired signal
Or parameter setting signal is sent to onboard diagnostic system via vehicle diagnostics/programming interface；
In vehicle condition obtaining mode,
(3) each drive module in the driving unit of port, which is received, comes from onboard diagnostics via vehicle diagnostics/programming interface
The vehicle condition of system characterizes signal, and the signal level of vehicle condition characterization signal is converted into being suitble to by correspondingly connected
The signal level of communication protocol nucleus module and microprocessor processes, and the vehicle condition by conversion is characterized into letter
Number it is sent to correspondingly connected communication protocol nucleus module；
(4) each communication protocol nucleus module, which is received, meets corresponding communication protocol from correspondingly connected drive module
Vehicle condition characterize signal, convert thereof into and be suitble to characterize signal by the received vehicle condition of microprocessor, be then sent to
The microprocessor.
In addition, the present invention also provides a kind of for vehicle diagnostics/programming communication system, comprising:
One microprocessor；
One vehicle diagnostics/programming interface, is connected to onboard diagnostic system, to examine Vehicle Electronic Control Unit
Disconnected/programming；And
It is used for vehicle diagnostics/programming interface integrated circuit according to above-mentioned, which to be connected described
It is logical to carry out data between microprocessor and onboard diagnostic system between microprocessor and the vehicle diagnostics/programming interface
Letter.
By using the communication control unit for including multiple communication protocol nucleus modules and the port including multiple drivers
The combination of driving unit, the invention allows to obtain any collocation of the transmitting-receiving of the signal of various communications protocols, so as to
It flexibly is adapted to various.In addition, having no effect on the corresponding communication link of other drivers when a certain drive corruption
Work.
Detailed description of the invention
Exemplary implementation scheme of the invention is described with reference to the accompanying drawing, it should be clearly understood that the present invention from the description
Above and other aspects, features and advantages.In the drawing:
Fig. 1 is the signal of an embodiment according to the present invention for vehicle diagnostics/programming interface integrated circuit
Figure.
Fig. 2 is to illustrate in greater detail a reality according to the present invention for vehicle diagnostics/programming interface integrated circuit
Apply the schematic diagram of scheme.
Fig. 3 be it is according to the present invention for vehicle diagnostics/programming interface integrated circuit and microprocessor and vehicle diagnostics/
The block diagram of connection between programming interface.
Fig. 4 illustrates in greater detail the connection between each unit inside the interface integrated circuit of Fig. 3.
Specific embodiment
A specific embodiment of the invention is described below with reference to accompanying drawings.
In the context of the invention, term " vehicle " includes Lu Yongche, duck, ship and aircraft.In addition, term
" diagnosis/programming interface " refers to the interface for diagnosing and/or programming.
Fig. 1 is the signal of an embodiment according to the present invention for vehicle diagnostics/programming interface integrated circuit
Figure.
It include communication control unit 110 and port driving unit 120 for vehicle diagnostics/programming interface integrated circuit.
Communication control unit 110 includes multiple communication protocol nucleus modules, for example, one or more HSCAN nucleus module
111, SWCAN nucleus module 112, LSCAN nucleus module 113, J1708 nucleus module 114, J1850-PWM nucleus module 115,
J1850-VPW nucleus module 116, KSCI nucleus module 117 and KN nucleus module 118, including one or more of which
Any combination.The communication protocol nucleus module can be the bus transceiver that can support various communications protocols, or may be used also
To include the communication interface for the signals such as transmitting clock, data, make to can control.
Port driving unit 120 include multiple drivers, such as 13 driver 1201A, 1201B ..., 1201K
And 1201L.For simplicity, a driver 1201A is illustrated only in Fig. 1.Driver 1201A includes multiple drive modules
121A-128A, for example, HSCAN drive module 121A, SWCAN drive module 122A, LSCAN drive module 123A, J1708 is driven
Dynamic model block 124A, J1850-PWM drive module 125A, J1850-VPW drive module 126A, K/SCI drive module 127A and KN
Drive module 128A.Each drive module communication protocol nucleus module phase corresponding in communication control unit in driver
Connection, for example, HSCAN drive module 121A is connect with HSCAN nucleus module 111, SWCAN drive module 122A and SWCAN core
Core module 112 connects, and LSCAN drive module 123A connect with LSCAN nucleus module 113, J1708 drive module 124A and
J1708 nucleus module 114 connects, and J1850-PWM drive module 125A is connect with J1850-PWM nucleus module 115, J1850-
VPW drive module 126A is connect with J1850-VPW nucleus module 116, K/SCI drive module 127A and KSCI nucleus module 117
Connection, and KN drive module 128A is connect with KN nucleus module 118.
Preferably, the external input/output interface of multiple drive module 121A-128A of driver 1201A can be one
It is a, for example, drive module all in 1201A is all connected to a pin PORT1 of interface integrated circuit, and institute in 1201B
Some drive modules are all connected to another pin PORT2 of interface integrated circuit etc..
Furthermore it is preferred that each driver can be realized with multiple groups MOS.
Fig. 2 is to illustrate in greater detail a reality according to the present invention for vehicle diagnostics/programming interface integrated circuit
Apply the schematic diagram of scheme.
Similar with Fig. 1, the port driving unit 120 in Fig. 2 may also comprise multiple drivers, such as 13 drivers
1201A, 1201B ..., 1201K and 1201L.For simplicity, 1201A and 1201B are only diagrammatically illustrated in Fig. 2.The drive
Dynamic device 1201A, 1201B ..., each of 1201K and 1201L may comprise HSCAN drive module, SWCAN driving mould
Block, LSCAN drive module, J1708 drive module, J1850-PWM drive module, J1850-VPW drive module, K/SCI driving
Module and KN drive module.Each drive module of each driver can be with each driving mould of the driver 1201A in Fig. 1
The identical mode of block, respectively with HSCAN nucleus module 111, the SWCAN nucleus module 112, LSCAN in communication control unit 110
Nucleus module 113, J1708 nucleus module 114, J1850-PWM nucleus module 115, J1850-VPW nucleus module 116, KSCI core
Core module 117 and KN nucleus module 118 connect.Configuration in this way can obtain the transmitting-receiving of the signal of various communications protocols
Any collocation, such as four in 13 drivers be used for for HSCAN communication, four for J1708 communication, five
KSCI communication, so as to flexibly be adapted to the communication needs of various.Furthermore, it is possible to parallel processing be realized, thus real
Existing more efficient communication efficiency.In addition, having no effect on the corresponding communication link of other drivers when a certain drive corruption
Work.
Fig. 3 be it is according to the present invention for vehicle diagnostics/programming interface integrated circuit and microprocessor and vehicle diagnostics/
The block diagram of connection between programming interface.
For vehicle diagnostics/programming interface integrated circuit 200 be connected to an outside microprocessor 300 and one
External vehicle diagnostics/programming interface 400.Vehicle diagnostics/the programming interface 400 is connected with onboard diagnostic system, to vehicle
Electronic control unit diagnose/program.In use, microprocessor 300, interface integrated circuit 200 and vehicle diagnostics/volume
Journey interface 400 links together, formed vehicle diagnostics channel, microprocessor 300 via interface integrated circuit 200, vehicle diagnostics/
Programming interface 400 is communicated with onboard diagnostic system, to be read by vehicle diagnostics/programming interface 400 from onboard diagnostic system
Data are arranged to Vehicle Electronic Control Unit write parameters in diagnostic data.
Interface integrated circuit 200 may also include other than including communication control unit 110 and port driving unit 120
Digital Logic control unit 230, program voltage unit 240, internal electric source unit 250, analog-to-digital conversion sampling unit 260 and excess temperature
One or more of protection location 270.
Fig. 4 be illustrated in further detail connection between each unit inside the interface integrated circuit of Fig. 3 and they
With the connection between external microprocessor and vehicle diagnosis/programming interface.
Digital Logic control unit 230 includes multiple registers and corresponding logic controller, to entire sets of interfaces
It is controlled at each unit inside circuit.As shown in Figure 4, Digital Logic control unit 230 can be with communication control list
Member 110 and port driving unit 120 connect, for configure communication control unit 110 multiple communication protocol nucleus modules and
The cooperation pattern of multiple drive modules in multiple drivers of port driving unit 120.Digital Logic control unit 230 may be used also
It is connect with microprocessor 300, is responsible for cooperateing with the processing for carrying out diagnosis control instruction with microprocessor 300.Digital Logic control is single
Member 230 receives the diagnosis control instruction from microprocessor 300, after treatment, to other lists in interface integrated circuit 200
Member is controlled accordingly.
Program voltage unit 240 is programmed required operating voltage to Vehicle Electronic Control Unit for generating.It compiles
Journey voltage cell 240 includes: the divider that voltage adjustable low pressure difference linear voltage regulator (LDO), connect with the LDO, and
Logic controller.Microprocessor 300 is by issuing control instruction to Digital Logic control unit 230, to control program voltage list
Program voltage needed for LDO in member 240 generates vehicle ECU programming.Program voltage unit 240 has output response rapid, defeated
Stable out, the features such as driving capability is strong, noise is low, can provide programming for the ECU programming of most vehicles currently on the market
Voltage.
Internal electric source unit 250 works required voltage for generating interface integrated circuit 200.Internal electric source unit
250 include: three low pressure difference linear voltage regulator LDO, DC-DC (DC-DC) Switching Power Supply.Internal electric source unit 250
Required supply voltage is run for providing interface integrated circuit 200, it can be powered by external cell or power supply adaptor,
Or by vehicle diagnostics/programming interface 400 by vehicle power supply (such as direct current+4V to direct current+40V), and can support heavy card
Vehicle.After the LDO and DC-DC Switching Power Supply processing, the normal work for other units in interface integrated circuit 200 is mentioned
For required operating voltage.Due to reducing peripheral power supply processing unit by the way of 200 in-line power of interface integrated circuit
Point, so that the volume and weight of final products all greatly reduces, improve portability.
Analog-to-digital conversion sampling unit 260 is used for the characterization via vehicle diagnostics/programming interface from onboard diagnostic system
The analog signal of vehicle condition carries out being sampled and transformed into digital signal.Analog-to-digital conversion sampling unit 260 includes for sampling base
Reference voltage source, analog-digital converter (such as 10bit analog-digital converter) and the multiple channels switching switch of quasi- reference.Wherein
The reference voltage source both can choose builtin voltage as reference, also can choose external voltage as reference.It is cut by switch
It changes, can be realized the time sharing sampling and numeral output to multiple analog input signals.Analog-to-digital conversion sampling unit 260 is connected to number
Word logic control element 230 and communication control unit 110.
Over-temperature protection unit 270 is used to detect the temperature of interface integrated circuit 200, and is detecting interface integrated circuit
When 200 temperature is more than threshold value, the letter for indicating that other units that interface integrated circuit 200 is whole or it is internal stop working is issued
Number.Over-temperature protection unit 270 includes temperature sensor and port short-circuit detecting circuit.Over-temperature protection unit is connected to number and patrols
Collect control unit 230.Once over-temperature protection unit 270 detects that 200 temperature of interface integrated circuit is excessively high, just the situation is reported
To Digital Logic control unit 230, Digital Logic control unit 230 determines whether that down interface is integrated according to the data reported
Other units of circuit 200, to avoid the damage of interface integrated circuit 200.
Preferably, the present invention also provides a kind of including the above-mentioned vehicle for vehicle diagnostics/programming interface integrated circuit
Diagnostic equipment.
Moreover it is preferred that the present invention also provides a kind of corresponding communication means, for passing through communication although being not shown
Control unit and port driving unit carry out data communication between microprocessor and onboard diagnostic system.The communication control unit
Including multiple communication protocol nucleus modules, each communication protocol nucleus module sends and receivees number according to a kind of communication protocol
According to, and each communication protocol nucleus module can be in vehicle condition inquiry and parameter setting mode and vehicle condition obtaining mode
Between switch；The port driving unit includes multiple drivers, and each of multiple driver driver all includes multiple
Drive module, multiple drive modules in each driver are respectively correspondingly connected to corresponding in the communication control unit
Multiple communication protocol nucleus modules.The communication means is characterized in that, in vehicle condition inquiry and parameter setting mode,
(1) each communication protocol nucleus module in communication control unit, which is received, meets respective communication from microprocessor
The vehicle condition inquiry signal and/or parameter setting signal of agreement, convert thereof into and are suitble to by correspondingly connected drive module
The received vehicle condition inquiry signal of institute and/or parameter setting signal, are then sent to correspondingly connected drive module；
(2) each drive module, which is received, meets corresponding communication protocol from correspondingly connected communication protocol nucleus module
Vehicle condition inquiry signal or parameter setting signal, the vehicle condition is inquired to the signal electricity of signal or parameter setting signal
Flat turn changes the signal level for being suitble to be handled by onboard diagnostic system into, and the vehicle condition by conversion is inquired signal
Or parameter setting signal is sent to onboard diagnostic system via vehicle diagnostics/programming interface；
In vehicle condition obtaining mode,
(3) each drive module in the driving unit of port, which is received, comes from onboard diagnostics via vehicle diagnostics/programming interface
The vehicle condition of system characterizes signal, and the signal level of vehicle condition characterization signal is converted into being suitble to by correspondingly connected
The signal level of communication protocol nucleus module and microprocessor processes, and the vehicle condition by conversion is characterized into letter
Number it is sent to correspondingly connected communication protocol nucleus module；
(4) each communication protocol nucleus module, which is received, meets corresponding communication protocol from correspondingly connected drive module
Vehicle condition characterize signal, convert thereof into and be suitble to characterize signal by the received vehicle condition of microprocessor, be then sent to
The microprocessor.
Preferably, the present invention also provides a kind of communication systems for vehicle diagnostics, comprising:
One microprocessor；
One vehicle diagnostics/programming interface, is connected to onboard diagnostic system, to examine Vehicle Electronic Control Unit
Disconnected/programming；And
Above-mentioned interface integrated circuit, the interface integrated circuit be connected the microprocessor and the vehicle diagnostics/
Between programming interface, to carry out data between the microprocessor and the onboard diagnostic system according to above-mentioned communication means
Communication.
Although instantiating the present invention above in conjunction with specific embodiment, but it should be appreciated that the present invention is not limited thereto.Not
Under the premise of being detached from the spirit and scope of the present invention, a variety of remodeling can be carried out to the present invention.
Claims (10)
1. a kind of for vehicle diagnostics/programming interface integrated circuit, which is connected the micro- of an outside
Processor and one are located between external vehicle diagnostics/programming interface, which is further coupled to
Onboard diagnostic system, diagnose/program to Vehicle Electronic Control Unit, which is characterized in that the interface integrated circuit includes:
One communication control unit, the communication control unit include multiple communication protocol nucleus modules, each communication protocol core
Module sends and receivees data according to a kind of communication protocol, and each communication protocol nucleus module can be inquired in vehicle condition
And switch between parameter setting mode and vehicle condition obtaining mode；And
A port driving unit, the port driving unit include multiple drivers, the driving of each of multiple driver
Device all includes multiple drive modules, and multiple drive modules in each driver are respectively correspondingly connected to the communication control list
Corresponding multiple communication protocol nucleus modules in member；
For the communication control unit, in vehicle condition inquiry and parameter setting mode, each communication protocol nucleus module is connect
The vehicle condition inquiry signal for meeting corresponding communication protocol and/or parameter setting signal from microprocessor are received, is converted
It is then sent at suitable by the correspondingly connected received vehicle condition inquiry signal of drive module institute and/or parameter setting signal
To correspondingly connected drive module；In vehicle condition obtaining mode, each communication protocol nucleus module is received from correspondence
The vehicle condition characterization signal for meeting corresponding communication protocol of the drive module of ground connection, converts thereof into and is suitble to by microprocessor
Received vehicle condition characterization signal is then sent to the microprocessor；
For the port driving unit, in vehicle condition inquiry and parameter setting mode, each drive module reception is come from
The vehicle condition inquiry signal for meeting corresponding communication protocol or parameter setting letter of correspondingly connected communication protocol nucleus module
Number, the signal level that the vehicle condition inquires signal or parameter setting signal is converted into being suitble to be handled by onboard diagnostic system
Signal level, and will by conversion the vehicle condition inquiry signal or parameter setting signal via vehicle diagnostics/volume
Journey interface is sent to onboard diagnostic system；In the vehicle condition obtaining mode, each drive module receive via vehicle diagnostics/
Programming interface characterizes signal from the vehicle condition of onboard diagnostic system, and the signal level of vehicle condition characterization signal is converted
At the suitable signal level by correspondingly connected communication protocol nucleus module and microprocessor processes, and will be by conversion
The vehicle condition characterization signal be sent to correspondingly connected communication protocol nucleus module.
2. according to claim 1 be used for vehicle diagnostics/programming interface integrated circuit, which is characterized in that wherein this is logical
The multiple communication protocol nucleus module for believing control unit includes HSCAN nucleus module, SWCAN nucleus module, LSCAN core mould
Block, J1708 nucleus module, J1850-PWM nucleus module, J1850-VPW nucleus module, KSCI nucleus module and KN nucleus module
In two or more, accordingly, multiple drive module of each driver of the port driving unit include HSCAN drive
Dynamic model block, SWCAN drive module, LSCAN drive module, J1708 drive module, J1850-PWM drive module, J1850-VPW
Two or more in drive module, K/SCI drive module and KN drive module.
3. according to claim 1 be used for vehicle diagnostics/programming interface integrated circuit, which is characterized in that further include number
Word logic control element, which connect with the communication control unit and the port driving unit, for matching
That sets multiple communication protocol nucleus module of the communication control unit and multiple driver of the port driving unit should
The collaboration mode of multiple drive modules.
4. according to claim 3 be used for vehicle diagnostics/programming interface integrated circuit, which is characterized in that further include compiling
Journey voltage cell, the program voltage unit are connect with the Digital Logic control unit, for generating to Car Electronic Control list
Member is programmed required operating voltage.
5. according to claim 1 be used for vehicle diagnostics/programming interface integrated circuit, which is characterized in that in further including
Portion's power supply unit, the internal electric source unit are connect with each unit inside interface integrated circuit, and being used for vehicle to generate this examines
Voltage required for the interface integrated circuit of disconnected/programming works.
6. according to claim 3 be used for vehicle diagnostics/programming interface integrated circuit, which is characterized in that further include mould
Number conversion sampling unit, the analog-to-digital conversion sampling unit and the Digital Logic control unit and the communication control unit connect
It connects, the analog signal of the characterization vehicle condition via vehicle diagnostics/programming interface from onboard diagnostic system is sampled
And it is converted into digital signal.
7. according to claim 3 be used for vehicle diagnostics/programming interface integrated circuit, which is characterized in that further included
Warm protection location, the over-temperature protection unit are connected to the Digital Logic control unit, are used for vehicle diagnostics/programming to detect this
Interface integrated circuit temperature, and detect this for vehicle diagnostics/programming interface integrated circuit temperature be more than threshold
When value, issuing instruction, this stops working for vehicle diagnostics/programming interface integrated circuit entirety or its other internal unit
Signal.
8. a kind of vehicle diagnostic device, which is characterized in that including being used for according to claim 1 to described in any claim in 7
Vehicle diagnostics/programming interface integrated circuit.
9. a kind of communication means, for vehicle-mounted in a microprocessor and one by communication control unit and port driving unit
Data communication is carried out between diagnostic system, which is characterized in that the communication control unit includes multiple communication protocol nucleus modules, often
A communication protocol nucleus module sends and receivees data according to a kind of communication protocol, and each communication protocol nucleus module can
Switch between vehicle condition inquiry and parameter setting mode and vehicle condition obtaining mode；The port driving unit includes more
A driver, each of multiple driver driver all include multiple drive modules, multiple drives in each driver
Dynamic model block is respectively correspondingly connected to corresponding multiple communication protocol nucleus modules in the communication control unit；The communication party
Method is characterized in that,
In vehicle condition inquiry and parameter setting mode,
(1) each communication protocol nucleus module in communication control unit, which is received, meets corresponding communication protocol from microprocessor
Vehicle condition inquiry signal and/or parameter setting signal, convert thereof into and be suitble to be connect by correspondingly connected drive module
The vehicle condition inquiry signal and/or parameter setting signal of receipts, are then sent to correspondingly connected drive module；
(2) each drive module receives the vehicle for meeting corresponding communication protocol from correspondingly connected communication protocol nucleus module
Status queries signal or parameter setting signal turn the signal level that the vehicle condition inquires signal or parameter setting signal
It changes the signal level for being suitble to be handled by onboard diagnostic system into, and the vehicle condition by conversion is inquired into signal or ginseng
Number setting signal is sent to onboard diagnostic system via vehicle diagnostics/programming interface；
In vehicle condition obtaining mode,
(3) each drive module in the driving unit of port, which is received, comes from onboard diagnostic system via vehicle diagnostics/programming interface
Vehicle condition characterize signal, by the vehicle condition characterization signal signal level be converted into be suitble to by correspondingly connected communication
The signal level of protocol core module and microprocessor processes, and the vehicle condition characterization signal by conversion is sent out
Give correspondingly connected communication protocol nucleus module；
(4) each communication protocol nucleus module receives the vehicle for meeting corresponding communication protocol from correspondingly connected drive module
Situation characterizes signal, converts thereof into and is suitble to characterize signal by the received vehicle condition of microprocessor, is then sent to described
Microprocessor.
10. a kind of for vehicle diagnostics/programming communication system characterized by comprising
One microprocessor；
One vehicle diagnostics/programming interface, is connected to onboard diagnostic system, diagnose/compile to Vehicle Electronic Control Unit
Journey；And
According to claim 1, to vehicle diagnostics/programming interface integrated circuit is used for described in any claim in 7, this connects
Mouthful integrated circuit is connected between the microprocessor and the vehicle diagnostics/programming interface, in microprocessor and vehicle-mounted
Data communication is carried out between diagnostic system.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/083546 WO2016015331A1 (en) | 2014-08-01 | 2014-08-01 | Interface integrated circuit for vehicle diagnosis/programming and vehicle diagnostic instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107076981A CN107076981A (en) | 2017-08-18 |
| CN107076981B true CN107076981B (en) | 2019-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480078102.3A Active CN107076981B (en) | 2014-08-01 | 2014-08-01 | For vehicle diagnostics/programming interface integrated circuit and vehicle diagnostic device |
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| Country | Link |
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| CN (1) | CN107076981B (en) |
| WO (1) | WO2016015331A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105843920B (en) * | 2016-03-25 | 2019-08-23 | 湖南省道通科技有限公司 | A kind of method and apparatus that the information applied to Auto analyzer is shown |
| SE541395C2 (en) * | 2017-12-27 | 2019-09-10 | Scania Cv Ab | Method and control unit for facilitating diagnosis for a vehicle |
| CN109005188A (en) * | 2018-08-23 | 2018-12-14 | 郑州云海信息技术有限公司 | A kind of data transmission device and method, system, equipment, computer storage medium |
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