CN104626988B - The constant-speed-cruise control system and method that assembling electronic throttle vehicle is used - Google Patents
The constant-speed-cruise control system and method that assembling electronic throttle vehicle is used Download PDFInfo
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- CN104626988B CN104626988B CN201510045802.9A CN201510045802A CN104626988B CN 104626988 B CN104626988 B CN 104626988B CN 201510045802 A CN201510045802 A CN 201510045802A CN 104626988 B CN104626988 B CN 104626988B
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Abstract
The constant-speed-cruise control system and method that electronic throttle vehicle is used are assembled the invention discloses a kind of, the system includes former wagon control node A, former wagon control node B, main control chip and former constant speed of vehicle cruise control switch；Main control chip is connected between former wagon control node A and former wagon control node B and between three using CAN communication, and the CAN data between the former wagon control node A and former wagon control node B are processed and transmitted by main control chip；The built-in state switch for changing communication mode of main control chip.The present invention takes full advantage of the function of the existing control system of former vehicle, and simple structure simultaneously increased the reliability of constant speed cruising system；Built-in state switch, in failure can automatic conversion, the work to former vehicle has no adverse effects.
Description
Technical field
The present invention relates to vehicle electric field, more particularly to the cruise that a kind of assembling electronic throttle vehicle is used
Control system and its method.
Background technology
Constant speed of vehicle cruise is as drive assistance function due to reducing energy consumption, mitigating driver's labour intensity etc. excellent
Point, has obtained extensive utilization in recent years.With the development of electronic technology and auto industry, nowadays increasing vehicle use
Electronic throttle gate technique, the technology causes that constant-speed-cruise control function is easier to realize, and more safe and reliable.For assembling
The vehicle of electronic throttle, if to install cruise additional, the technical scheme that oneself has at present is that the constant speed for increasing complete set is patrolled
Boat control system, structure and principle are shown in Fig. 5.
Existing technical scheme in this figure needs to increase with lower component：1）Display device：For showing cruise
Working condition and malfunction；2）Constant-speed-cruise control is switched：Selected constant-speed-cruise control function is input into for driver；
3）With the electric interfaces of former vehicle：Working condition and data for obtaining former car；4）Gas pedal changeover plug：For switching
The signal of gas pedal；5）Cruise control device.Operation principle is as follows：
If in the case where cruise is closed, the signal for setting former vehicle accelerator pedal is directly output to former vehicle
ECM, is now controlled the speed of vehicle by driver by former vehicle accelerator pedal.
If in the case where cruise works, the former vehicle accelerator pedal of cut-out is exported to the signal of former vehicle ECM,
It is changed to be exported to former vehicle ECM by cruise control device simulation accelerator pedal signal, cruise control device is according to logical
Cross with the information of vehicles and data that the electric interfaces of former vehicle are obtained and calculated by corresponding, so as to adjust constant-speed-cruise control
Device exports the signal of the gas pedal to former vehicle ECM, so as to change engine speed to reach the former vehicle traveling speed of control
The purpose of degree.Complete cruise function.
With the description above, prior art has the following disadvantages or not enough：
1）Security and reliability Shortcomings：Prior art is exported to former vehicle using simulation accelerator pedal signal
The mode of ECM, when cruise works, is exported to former vehicle ECM by cruise control device simulation accelerator pedal signal,
Now, former vehicle ECM can not differentiate the accelerator pedal signal for receiving and be sent by human pilot, or by cruise control
Unit simulation processed, so when cruise works, the control system of former vehicle（Such as ECM）Itself can not active
Cancel cruise function.So there is certain potential safety hazard.
2）Prior art complex structure, installs inconvenience：First, prior art needs to install gas pedal conversion
Plug, because vehicle accelerator pedal present position is hidden and spaces compact, so installing extremely inconvenient.Secondly：Prior art side
Case needs individually to increase display device to show cruise related work information, complex structure to human pilot.
The content of the invention
For weak point present in above-mentioned technology, the present invention provides a kind of safe and reliable, simple structure dress
With the constant-speed-cruise control system and method that electronic throttle vehicle is used.
To achieve the above object, the present invention provides the constant-speed-cruise control system that a kind of assembling electronic throttle vehicle is used
System, including former wagon control node A, former wagon control node B, main control chip, former constant speed of vehicle cruise control switch and be used for
Show the former vehicle display instrument of cruise working condition；
The main control chip is connected between former wagon control node A and former wagon control node B and between three using CAN
Communication, the CAN data between the former wagon control node A and former wagon control node B are processed and transmitted by main control chip；
The former wagon control node A and original wagon control node B is one or more nodes with former vehicle ECM in same CAN network；
The main control chip is built-in with A/D converter, by ladder resistance structure inside the constant speed of vehicle cruise control switch
It is electrically connected with the constant-speed-cruise control switch interface circuit inside main control chip into and by wire harness；When press it is different by
During key, the former constant speed of vehicle cruise control switch can export different voltages to main control chip, and the voltage is by cruise
It is input in main control chip after the partial pressure of controlling switch interface circuit, by A/D converter sample obtaining input voltage, according to
Input voltage just can confirm that the button pressed；According to the function of button, the main control chip is to receiving by former vehicle control
The data segment of the CAN message related to constant-speed-cruise control that node A processed sends is modified, and is allowed to reflect driver to former vehicle
The mode of operation of constant-speed-cruise control switch, then sends these data to former wagon control node B again, makes former wagon control
Node B performs corresponding constant-speed-cruise control function；Meanwhile, the message that former wagon control node B sends is received, it is sent to former car
Control node A, and the data segment according to the CAN message for indicating cruise working condition implication, the former vehicle of control shows
The work of cruise indicator lamp in instrument.
The also built-in state switch for changing communication mode of the main control chip, the main control chip inside occurs
Failure, then change so that all former wagon control node A and former vehicle automatically into fault mode and state switch
Direct communication between control node B, is processed without main control chip.
Wherein, the main control chip is by CAN lines and the CAN line parallels of former vehicle display instrument.
Wherein, the main control chip is connected by flash or lower edge switch with former vehicle display instrument.
Wherein, the main control chip also includes processor, the first CAN interface circuit, the second CAN interface circuit, display instrument
Table CAN interface circuit and display instrument direct drive interface circuit, the outside of the first CAN interface circuit is connected by wire harness
Former wagon control node A, the outside of the second CAN interface circuit connects former wagon control node B, described first by wire harness
The inside of CAN interface circuit and the second CAN interface circuit is respectively connected with processor and state switch；The constant speed is patrolled
The inside of boat controlling switch interface circuit is connected with processor, and its outside wire harness that passes through is with former constant speed of vehicle cruise control switch
It is connected, the inside of the display instrument CAN interface circuit and display instrument direct drive interface circuit is connected with processor, and
It is connected with former vehicle display instrument by wire harness outside it.
Wherein, the former constant speed of vehicle cruise control switch is installed on steering wheel for vehicle, and the constant-speed-cruise control
Button on switch can include one or more following buttons：Open button, close button, setting button, deceleration button,
Recover button, turbo and cancel button, button is electrically connected by wire harness with constant-speed-cruise control switch interface circuit.
To achieve the above object, the present invention also provides the constant-speed-cruise control that a kind of assembling electronic throttle vehicle is used
Method, comprises the following steps：
Step 1, obtains the mode of operation of constant-speed-cruise control switch：It is upper different when constant-speed-cruise control switch is pressed
During button, it is different to switch the voltage of output, and voltage signal is sampled using A/D converter, then by analysis
The size of voltage can be obtained by the mode of operation of constant-speed-cruise control switch；
Step 2, receives all CAN messages that first via CAN is received, and receives and successfully then enters step 3；If receive lost
Lose, exit the step and enter fault mode；
Whether step 3, the CAN message received to step 2 judges the message according to ID for constant-speed-cruise control, if
It is then to enter step 4；
Step 4, the mode of operation of the constant-speed-cruise control switch according to acquired by step 1 changes the number of the CAN message
According to the value of section, then amended CAN message is stored in the transmission buffer of the second road CAN；
Step 5, starts the second road CAN and sends data, and judges whether to send successfully, and lower step is entered if sending successfully
Suddenly；Enter fault mode if failure is sent；
Step 6, receives all CAN messages that the second road CAN is received, and judges whether to receive successfully, if received successfully,
Then enter lower step；If reception failure, into fault mode；
Step 7, the CAN message that will be received is directly stored in the transmission buffer of first via CAN, then starts the first via
CAN sends data, and judges whether to send successfully；Enter lower step if sending successfully；Enter event if failure is sent
Barrier pattern；
Whether step 8, ID according to the CAN message judges the message for indicating the working condition of cruise, such as
Fruit is then to enter lower step；If not changing original dispaly state then；
Step 9, information according to the CAN message data segment controls the work of the lamp speed cruise indicator lamp in display instrument.
Wherein, it is in the step 3 if it is determined that be not intended to constant-speed-cruise control to the message, then described into step 0
The CAN message is directly stored in the transmission buffer of the second road CAN not make any modification to CAN message for step 0.
Wherein, step 5 is directly entered after completing step 0.
Wherein, the data segment information in the step 9 can be the combination of a position or multiple positions.
Wherein, the value of the data segment for changing the CAN message in the step 4 is to change the data segment relevant bits of CAN message
Value, the relevant bits can be position can also be multiple positions combination.
The beneficial effects of the invention are as follows：Compared with prior art, the assembling electronic throttle vehicle that the present invention is provided is made
Constant-speed-cruise control system and method, the beneficial effect for reaching is：Take full advantage of the existing control system of former vehicle
Correlation function and configuration, such as：The specific control strategy of cruise is realized using former vehicle ECM, using former vehicle display instrument
Table shows the working condition of cruise, is input into driver requested cruise life using former constant speed of vehicle cruise switch
Make, the beneficial effect for reaching is：（1）The function of the existing control system of former vehicle is taken full advantage of, cost has been saved；（2）Profit
With the existing constant-speed-cruise control strategy of former vehicle, the reliability of constant speed cruising system is considerably increased；（3）Mitigate driver tired
Labor, saves vehicle fuel consumption, and improve travel safety；（4）Built-in state switch, can turn automatically in failure
Change, the work to former vehicle does not produce harmful effect.
Brief description of the drawings
The block diagram of the constant-speed-cruise control system that Fig. 1 is used by assembling electronic throttle vehicle of the invention；
Fig. 2 is the first way being made up of ladder resistance network inside constant speed of vehicle cruise switch in Central Plains of the present invention；
Fig. 3 is the second way being made up of ladder resistance network inside constant speed of vehicle cruise switch in Central Plains of the present invention；
The flow chart of the constant-speed-cruise control method that Fig. 4 is used by assembling electronic throttle vehicle of the invention；
Fig. 5 is the fundamental diagram of prior art.
Main element symbol description is as follows：
10th, former wagon control node A 11, former wagon control node B
12nd, main control chip 13, former constant speed of vehicle cruise control switch
14th, former vehicle display instrument 121, A/D converter
123rd, state switch 124, processor
125th, the first CAN interface circuit 126, the second CAN interface circuit
127th, constant-speed-cruise control switch interface circuit 128, display instrument CAN interface circuit
129th, display instrument direct drive interface circuit.
Specific embodiment
In order to more clearly state the present invention, the present invention is further described below in conjunction with the accompanying drawings.
Refer to Fig. 1, the constant-speed-cruise control system that assembling electronic throttle vehicle of the invention is used, including former car
Control node A10, former wagon control node B11, main control chip 12, former constant speed of vehicle cruise control switch 13 and for showing
The former vehicle display instrument 14 of cruise working condition；
Main control chip 12 is connected between former wagon control node A10 and former wagon control node B11 and is adopted between three
With CAN communication, the CAN data between former wagon control node A10 and former wagon control node B11 are by main control chip treatment
And transmit；Former wagon control node A10 and original wagon control node B11 be with former vehicle ECM at one of same CAN network or
Multiple nodes；
Main control chip 12 is built-in with A/D converter 121, is made up of ladder resistance inside constant speed of vehicle cruise control switch 13
And be electrically connected with the constant-speed-cruise control switch interface circuit 127 inside main control chip 12 by wire harness；When pressing difference
Button when, former constant speed of vehicle cruise control switch 13 can export different voltages to main control chip 12, and the voltage is by constant speed
It is input to after the partial pressure of cruise control switch interface circuit 127 in main control chip 12, is sampled by A/D converter 121
Input voltage, the button pressed just is can confirm that according to input voltage；According to the function of button, what main control chip 12 pairs was received
The data segment of the CAN message related to constant-speed-cruise control sent by former wagon control node A10 is modified, and is allowed to reflection and is driven
Then the person of sailing sends these data to former wagon control node again to the mode of operation of former constant speed of vehicle cruise control switch 13
B11, makes former wagon control node B11 perform corresponding constant-speed-cruise control function；Meanwhile, receive former wagon control node B11
The message of transmission, is sent to former wagon control node A10, and according to the data of the CAN message for indicating cruise working condition
The implication of section, the work of cruise indicator lamp in the former vehicle display instrument 14 of control；
The also built-in state switch 123 for changing communication mode of main control chip 12, the inside of main control chip 12 occurs
Failure, then changed automatically into fault mode and state switch 123 so that all former wagon control node A10 with it is former
Direct communication between wagon control node B11, is processed without main control chip 12.
Compared to the cruise control that the situation of prior art, the assembling electronic throttle vehicle that the present invention is provided are used
System processed, takes full advantage of correlation function and the configuration of the existing control system of former vehicle, such as：It is fixed to be realized using former vehicle ECM
The specific control strategy of speed cruise, the working condition of cruise is shown using former vehicle display instrument, fixed using former vehicle
Fast cruise switch is input into driver requested cruise order, and the beneficial effect for reaching is：（1）Take full advantage of former vehicle
The function of existing control system, has saved cost；（2）Using the existing constant-speed-cruise control strategy of former vehicle, greatly increase
The reliability of constant speed cruising system；（3）Mitigate driver fatigue, save vehicle fuel consumption, and improve travel safety；
（4）Built-in state switch, in failure can automatic conversion, the work to former vehicle do not produce harmful effect.
In the present embodiment, main control chip 12 is by CAN lines and the CAN line parallels of former vehicle display instrument 14.Master control core
Piece 12 controls former vehicle display instrument according to the data of the former wagon control node A10 for receiving or former wagon control nodes B11
The work of table 14.The working condition of cruise is shown using former vehicle display instrument 14, it is different according to control mode, can be with
It is divided into two kinds of connections and control mode：The first controls former vehicle display instrument 14 for main control chip 12 by CAN communication mode,
Now, main control chip 12 provides the CAN line parallels of CAN lines and former vehicle display instrument 14, and the CAN lines can be single line CAN,
Can be two-wire CAN.Second, main control chip 12 directly controls former vehicle by internal switch such as high side switches or lower edge switch
Display instrument 14, now, by wire harness, directly indicator lamp related to the inside of former vehicle display instrument 14 is connected main control chip 12
Connect.The working condition of cruise is shown using former vehicle display instrument 14, specific mode is basis for main control chip 12
The data of former vehicle control system the node A or B that receive refer to accordingly in former vehicle display instrument 14 to decide whether to light
Show lamp, and which kind of color such as white or the indicator lamp of red should be lighted, and light in which way as usual bright or glittering.
Control the corresponding indicator lamp of former vehicle display instrument 14 for showing the working condition of cruise according to main control chip 12, work as constant speed
When cruise control system enters ready mode, cruise indicator lamp is lighted in former vehicle display instrument 14, and is shown as white；
When constant-speed-cruise control state is entered, display instrument cruise indicator lamp is lighted and shown in red.Former vehicle is closed to determine
Fast cruise control switch 13, cruise indicator lamp extinguishes in former vehicle display instrument 14.
In the present embodiment, main control chip 12 also includes processor 124, the first CAN interface circuit 125, the second CAN interface
Circuit 126, display instrument CAN interface circuit 128, display instrument direct drive interface circuit 129 and power circuit, a CAN
The outside of interface circuit 125 connects former wagon control node A10 by wire harness, and the outside of the second CAN interface circuit 126 passes through line
The inside of the former wagon control node B11 of beam connection, the first CAN interface circuit 125 and the second CAN interface circuit 126 respectively with
Processor 124 is connected with state switch 123；The inside of constant-speed-cruise control switch interface circuit 127 and the phase of processor 124
Even, and its it is outside be connected with former constant speed of vehicle cruise control switch 13 by wire harness, display instrument CAN interface circuit 128 with show
Show that the inside of instrument direct drive interface circuit 129 is connected with processor 124, and shown with former vehicle by wire harness outside it
Show that instrument 14 is connected.Power circuit outside is connected to former vehicle line system by wire harness, it is internal respectively with processor 124, the
One CAN interface circuit 125, the second CAN interface circuit 126, constant-speed-cruise control switch interface circuit 127, display instrument CAN connect
Mouthful circuit 128, display instrument direct drive interface circuit 129 is connected with state switch 123, for by the work of former vehicle
Operating voltage of the voltage conversion into each internal circuit being connected with this.Former constant speed of vehicle cruise control switch 13 is installed on vehicle
On steering wheel, and constant-speed-cruise control switch include open button, close button, setting button, deceleration button, recovery button,
Turbo and cancellation button, open button, close button, set button, deceleration button, recover button, turbo and take
The button that disappears is connected by an electric wire with constant-speed-cruise control switch interface circuit 127, and these buttons might have part conjunction
And phenomenon, such as it is probably a key to open and close, for the first time by being exactly to open, then by being once shut off.Former vehicle is determined
The mode being made up of ladder resistance inside fast cruise control switch 13 such as Fig. 2-3.
Further referring to Fig. 4, the present invention also provides the cruise control that a kind of assembling electronic throttle vehicle is used
Method processed, comprises the following steps：
Step S1, obtains the mode of operation of constant-speed-cruise control switch：It is upper different when constant-speed-cruise control switch is pressed
During button, it is different to switch the voltage of output, and voltage signal is sampled using A/D converter, then by analysis
The size of voltage can be obtained by the mode of operation of constant-speed-cruise control switch；
Step S2, receives all CAN messages that first via CAN is received, and receives and successfully then enters step 3；If receive lost
Lose, exit the step and enter fault mode；The CAN message that first via CAN is received in the step does not include that former vehicle ECM sends
CAN message, i.e., should not be connected with ECM outside described first via CAN；
Step S3, the CAN message received to step S2 judges whether the message is used for constant-speed-cruise control according to ID, such as
Fruit is then to enter step S4；If it is determined that being not intended to constant-speed-cruise control to the message, then into step S0, step S0 is not for
Any modification is made to CAN message, the CAN message is directly stored in the transmission buffer of the second road CAN;After completion step S0 directly
Into step S5;Step S3 is the ID values according to CAN message judges whether the message is for constant-speed-cruise control.
On one specific vehicle, the ID is probably one or more specific values, if the ID of the CAN message for receiving is equal to this
Or any of which in multiple is specifically worth, then it represents that the CAN message is for constant-speed-cruise control, if received
CAN message is not equal to any one in this or multiple, then it represents that the CAN message is not intended to constant-speed-cruise control；
Step S4, the mode of operation of the constant-speed-cruise control switch according to acquired by the step S1 changes the CAN message
The value of data segment, then amended CAN message is stored in the transmission buffer of the second road CAN；
Step S5, starts the second road CAN and sends data, and judges whether to send successfully, under entering if sending successfully
Step；Enter fault mode if failure is sent；The data that second road CAN sends should be able to be received by former vehicle ECM.I.e.
Should be connected with ECM outside the second road CAN；
Step S6, receives all CAN messages that the second road CAN is received, and judges whether to receive successfully, if received into
Work(, then into lower step；If reception failure, into fault mode；
Step S7, the CAN message that will be received is directly stored in the transmission buffer of first via CAN, then starts first
Road CAN sends data, and judges whether to send successfully；Enter lower step if sending successfully；Enter if failure is sent
Fault mode；
Whether step S8, ID according to the CAN message judge the message for indicating the working condition of cruise, such as
Fruit is then to enter lower step；If not changing original dispaly state then；
Step S9, information according to the CAN message data segment controls the work of the lamp speed cruise indicator lamp in display instrument
Make.Data segment information in the step can be the combination of a position or multiple positions.
Wherein, the value of the data segment for changing the CAN message in step S4 is to change the data segment relevant bits of CAN message
Value, the relevant bits can be position can also be multiple positions combination.
The method that the present invention is provided has the effect that：Take full advantage of the existing control system of former vehicle correlation function and
Configuration, such as：The specific control strategy of cruise is realized using former vehicle ECM, shows fixed using former vehicle display instrument
The working condition of speed cruise, driver requested cruise order is input into using former constant speed of vehicle cruise switch, is reached
Beneficial effect is：（1）The function of a former existing control system is taken full advantage of, cost has been saved；（2）It is existing using former vehicle
Constant-speed-cruise control strategy, considerably increase the reliability of constant speed cruising system；（3）Mitigate driver fatigue, save automobile
Fuel consumption, and improve travel safety；（4）Built-in state switch, in failure can automatic conversion, to former vehicle
Work do not produce harmful effect；5）Realized by transmitting CAN data to related automobile control node, specifically, institute
The CAN data for stating method transmission have reacted the mode of operation that human pilot is switched to constant-speed-cruise control.In addition, being to improve
The real-time and reliability of system, increase execution efficiency, and the receiving portion of data can individually be processed by way of interrupting, i.e.,
Just processed when data are received；Increased the safety and reliability of system.
The operation principle of the technical program is illustrated below by way of a specific embodiment：
In the present embodiment, former wagon control node A is former vehicle BCM, and former wagon control node B is former vehicle ECM, wound
New part is that main control chip is connected on former vehicle BCM with former vehicle ECM.Therefore, former vehicle BCM is sent to former vehicle ECM cars
Control has CAN data to be sent to wagon control by main control chip again after will first passing through the reception of the main control chip and treatment
The former vehicle ECM of system.Conversely, all CAN data that the former vehicle ECM of vehicle control system is sent to former vehicle BCM are also same
Sample is sent to former vehicle BCM by the main control chip again after first passing through the reception of the main control chip and processing.When constant speed is patrolled
When boat control system is closed, it is complete that main control chip will receive the CAN data sent by the former vehicle ECM of vehicle control system
Whole is sent to former vehicle BCM, likewise, main control chip is complete by the received CAN data sent by former vehicle BCM
The former vehicle ECM for being sent to vehicle control system.
When cruise is in opening, comprising unlatching, setting is slowed down, is accelerated, recover, cancels, and main control chip will
The CAN data sent by the former vehicle ECM of vehicle control system for receiving are by built-in function computing, function computing bag
Contain：Increase, reduce, delete, merge, modification resets, and does not make any changes）After be then forwarded to former vehicle BCM, it is equally, described
By the received CAN data sent by former vehicle BCM by built-in function computing, function computing is included main control chip：
Increase, reduce, delete, merge, modification is reset, and the former vehicle ECM of vehicle control system is sent to after not making any changes etc..
It is made up of ladder resistance inside former constant speed of vehicle cruise control switch, when driver presses different buttons, the cruise
Controlling switch can export different voltages to the main control chip.A/D converter, by control of cruising the former constant speed of vehicle being input into
The sampling of the voltage of switch is made, the magnitude of voltage that can be input into just can confirm that driver is to press according to input voltage value
Which button.According to the function of button, the main control chip, the CAN data sent by former vehicle BCM to receiving do phase
The function computing answered, then sends this data to vehicle ECM again, after vehicle ECM receives the data, will be determined according to built-in
The fast corresponding constant-speed-cruise control function of cruise control strategy execution.The main control chip is analyzed to the data for receiving,
If former vehicle control system sends the information for having and representing that constant-speed-cruise control system is in SBR, the main control chip
Send for the CAN data for lighting display instrument interior lamp to former vehicle display instrument, should now put the lamp of brilliant white,
Corresponding indicator lamp can also be lighted by enabling internal display instrument direct driving circuit.If former vehicle control system hair
The information for representing that constant-speed-cruise control system is in normal operating conditions is sent, then the main control chip is sent for lighting display
The CAN data of gauge internal indicator lamp should now put the lamp of shiny red to former vehicle display instrument, it is also possible in enabling
Portion display instrument direct driving circuit lights corresponding indicator lamp.
If there is catastrophe failure inside the main control chip, automatically into fault mode, main control chip internal state
Change-over switch changes, for switching the communication between former vehicle control system Central Plains vehicle BCM to former vehicle ECM.It is all
Communication between former vehicle BCM to former vehicle ECM is all processed without main control chip, and now former vehicle is had no effect.Together
When cruise indicator lamp can be instructed in display instrument to flash, to point out the presence of dependent failure.
Below to being illustrated based on the constant speed cruising system control method described in the technical program：In this specific embodiment
Described in method detailed process it is as follows：
Main control chip is electrically connected with wire harness with former vehicle, and work electricity is obtained from former vehicle when ignition switch is opened
Pressure, main control chip is started working；
First, the input voltage that main control chip is switched by the A/D converter inside main control chip to constant-speed-cruise control
Sampled, the mode of operation of constant-speed-cruise control switch is can be obtained by according to magnitude of voltage.In the present embodiment, cruise
Controlling switch has 4 buttons：1, open/close, 2 recover/accelerate, 3 settings/slow down, and 4 cancel.Available constant speed is patrolled
The mode of operation of controlling switch of navigating has 5：1 opens, and 2 close, and 3 recover/accelerate, 4 settings/slow down, and 5 cancel.
Next the main control chip receives the CAN data that BCM sends, if the success of the process of reception, to the CAN for receiving
The ID of message is analyzed, and the CAN communication ID between BCM and ECM is 29 Bits Expanding identifiers in the present embodiment, for constant speed
The CAN message of cruise control has two, respectively message A：ID=10000011001100010000001000000, the message
The byte of data field the 3rd be used for constant-speed-cruise control.
Message B：ID=10000011001100010000001000100. the word of data field the 3rd of the message is used for fixed
The verification of fast cruise control.
If the ID numerical value phases of the ID and above-mentioned message A or message B of the CAN message that the BCM that main control chip is received sends
Together, then illustrate that the message for receiving is for constant-speed-cruise control or verification, then just opened according to the constant-speed-cruise control for obtaining
The mode of operation of pass is modified to the data segment of the message.Otherwise, the message is directly stored in the transmission buffering of the second road CAN
Area,
The amending method to message is in the present embodiment：
The first, if the mode of operation of constant-speed-cruise control switch is：1 opens, then change message data section the 3rd
Byte is：1XXXXXXX.（X represented and do not change）
Second, if the mode of operation of constant-speed-cruise control switch is：2 close, then change message data section the 3rd
Byte is：00000000, it is also possible to make no modifications.
The third, if the mode of operation of constant-speed-cruise control switch is：3 recover/accelerate, then change message data section
3rd byte is：X1XXXXXX.（X represented and do not change）
4th kind, if the mode of operation of constant-speed-cruise control switch is：4 settings/slow down, then change message data section
3rd byte is：XX1XXXXX.（X represented and do not change）
5th kind, if the mode of operation of constant-speed-cruise control switch is：5 cancel, then change message data section the 3rd
Byte is：XXXXXXX1.（X represented and do not change）
Then amended CAN message is stored in the transmission buffering area of the second road CAN.Start the transmission of the second road CAN, will
Message is sent to ECM.Because having contained driver to constant speed by CAN message related to cruise after above-mentioned treatment
The operation information of cruise control switch, so, after ECM receives the CAN message, will be according to internal constant-speed-cruise control strategy
Perform corresponding constant-speed-cruise control function.
Next the main control chip receives the CAN data that ECM sends, if the success of the process of reception, to the CAN for receiving
The ID of message is analyzed, and in the present embodiment, this is shown if ID is equal to 00000000000000000010011101001
Message is indicated for the working condition of cruise.
Specific method is as follows：
If the message data the first byte of section is：00000000, then show that cruise is closed, now should
Cruise indicator lamp in the closing display instrument.
If the message data the first byte of section is：00000001, then show that cruise is in SBR, now should
Light the white cruise indicator lamp in display instrument.
If the message data the first byte of section is：00000010, then show that cruise is in running order, now should
Light the red cruise indicator lamp in display instrument.
In the present embodiment, the main control chip with former vehicle display instrument is communicated by CAN modes, therefore, it is described
Main control chip controls the work of cruise indicator lamp in display instrument by sending CAN message to display instrument.Specifically：
It is 00110000101 to send ID, and data segment is a byte, is worth the CAN message for 00000000, controls display instrument
Cruise indicator lamp extinguishes in table.
It is 00110000101 to send ID, and data segment is a byte, is worth the CAN message for 00000001, controls display instrument
White cruise indicator lamp is lighted in table.
It is 00110000101 to send ID, and data segment is a byte, is worth the CAN message for 00000010, controls display instrument
Red cruise indicator lamp is lighted in table.
If there is catastrophe failure inside the main control chip, automatically into fault mode, main control chip internal state
Change-over switch is changed, and the communication between all former vehicle BCM to former vehicle ECM is all processed without main control chip, now
Former vehicle is had no adverse effects.
Disclosed above is only several specific embodiments of the invention, but the present invention is not limited to this, any ability
What the technical staff in domain can think change should all fall into protection scope of the present invention.
Claims (10)
1. it is a kind of to assemble the constant-speed-cruise control system that electronic throttle vehicle is used, it is characterised in that including former vehicle control
Node A processed, former wagon control node B, main control chip, former constant speed of vehicle cruise control switch and for showing that cruise works
The former vehicle display instrument of state；
The main control chip is connected between former wagon control node A and former wagon control node B and logical using CAN between three
Letter, the CAN data between the former wagon control node A and former wagon control node B are processed and transmitted by main control chip；
The former wagon control node A and original wagon control node B is one or more sections in same CAN network with former vehicle ECM
Point；
The main control chip is built-in with A/D converter, be made up of ladder resistance inside the constant speed of vehicle cruise control switch and
It is electrically connected with the constant-speed-cruise control switch interface circuit inside main control chip by wire harness；When pressing different buttons
When, the former constant speed of vehicle cruise control switch can export different voltages to main control chip, and the voltage is by cruise control
It is input in main control chip after the partial pressure of switch interface circuit processed, by A/D converter sample obtaining input voltage, according to defeated
Enter voltage and just can confirm that the button pressed；According to the function of button, the main control chip is to receiving by former wagon control
The data segment of the CAN message related to constant-speed-cruise control that node A sends is modified, and is allowed to reflect that driver is fixed to former vehicle
The mode of operation of fast cruise control switch, then sends these data to former wagon control node B again, makes former wagon control section
Point B performs corresponding constant-speed-cruise control function；Meanwhile, the message that former wagon control node B sends is received, it is sent to former vehicle
Control node A, and the data segment according to the CAN message for indicating cruise working condition implication, the former vehicle display instrument of control
The work of cruise indicator lamp in table.
There is event in the also built-in state switch for changing communication mode of the main control chip, the main control chip inside
Barrier, then change so that all former wagon control node A and former vehicle control automatically into fault mode and state switch
Direct communication between node B processed, is processed without main control chip.
2. the constant-speed-cruise control system that assembling electronic throttle vehicle according to claim 1 is used, its feature exists
In the main control chip is by CAN lines and the CAN line parallels of former vehicle display instrument.
3. the constant-speed-cruise control system that assembling electronic throttle vehicle according to claim 1 is used, its feature exists
In the main control chip is connected by flash or lower edge switch with former vehicle display instrument.
4. the constant-speed-cruise control system that assembling electronic throttle vehicle according to claim 1 is used, its feature exists
In the main control chip also includes processor, the first CAN interface circuit, the second CAN interface circuit, display instrument CAN interface electricity
Road and display instrument direct drive interface circuit, the outside of the first CAN interface circuit connects former wagon control by wire harness
Node A, the outside of the second CAN interface circuit connects former wagon control node B, the first CAN interface electricity by wire harness
The inside of road and the second CAN interface circuit is respectively connected with processor and state switch；The constant-speed-cruise control is opened
The inside for closing interface circuit is connected with processor, and its outside wire harness that passes through is connected with former constant speed of vehicle cruise control switch, institute
The inside for stating display instrument CAN interface circuit and display instrument direct drive interface circuit is connected with processor, and outside it
It is connected with former vehicle display instrument by wire harness.
5. the constant-speed-cruise control system that assembling electronic throttle vehicle according to claim 1 is used, its feature exists
In the former constant speed of vehicle cruise control switch is installed on steering wheel for vehicle, and pressing on constant-speed-cruise control switch
Key can include one or more following buttons：Open button, close button, setting button, deceleration button, recover button,
Turbo and cancellation button, button are electrically connected by wire harness with constant-speed-cruise control switch interface circuit.
6. it is a kind of to assemble the constant-speed-cruise control method that electronic throttle vehicle is used, it is characterised in that to comprise the following steps：
Step 1, obtains the mode of operation of constant-speed-cruise control switch：Upper different button is switched when constant-speed-cruise control is pressed
When, it is different to switch the voltage of output, voltage signal is sampled using A/D converter, then by analysis voltage
Size can be obtained by constant-speed-cruise control switch mode of operation；
Step 2, receives all CAN messages that first via CAN is received, and receives and successfully then enters step 3；If reception failure
Exit the step and enter fault mode；
Step 3, the CAN message received to step 2 judges whether the message is used for constant-speed-cruise control according to ID, if it is
Into step 4；
Step 4, the mode of operation of the constant-speed-cruise control switch according to acquired by step 1 changes the data segment of the CAN message
Value, then amended CAN message is stored in the transmission buffer of the second road CAN；
Step 5, starts the second road CAN and sends data, and judges whether to send successfully, and lower step is entered if sending successfully；
Enter fault mode if failure is sent；
Step 6, receives all CAN messages that the second road CAN is received, and judges whether to receive successfully, if received successfully, enters
Enter lower step；If reception failure, into fault mode；
Step 7, the CAN message that will be received is directly stored in the transmission buffer of first via CAN, then starts first via CAN
Data are sent, and judges whether to send successfully；Enter lower step if sending successfully；Enter failure mould if failure is sent
Formula；
Whether step 8, the ID of the CAN message sent according to step 7 judges the message for indicating the work shape of cruise
State, if yes then enter lower step；If not changing original dispaly state then；
Step 9, the information of the CAN message data segment sent according to step 7 controls the lamp speed cruise indicator lamp in display instrument
Work.
7. the constant-speed-cruise control method that assembling electronic throttle vehicle according to claim 6 is used, its feature exists
In if it is determined that being not intended to constant-speed-cruise control to the message in the step 3, then into step 0, the step 0 is not for
Any modification is made to CAN message, the CAN message is directly stored in the transmission buffer of the second road CAN.
8. the constant-speed-cruise control method that assembling electronic throttle vehicle according to claim 7 is used, its feature exists
In, complete step 0 after be directly entered step 5.
9. the constant-speed-cruise control method that assembling electronic throttle vehicle according to claim 6 is used, its feature exists
In the data segment information in the step 9 can be the combination of a position or multiple positions.
10. the constant-speed-cruise control method that assembling electronic throttle vehicle according to claim 6 is used, its feature exists
In the value that the data segment of the CAN message is changed in the step 4 is the value of the data segment relevant bits for changing CAN message, the correlation
Position can be position can also be multiple positions combination.
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| CN201510045802.9A CN104626988B (en) | 2015-01-29 | 2015-01-29 | The constant-speed-cruise control system and method that assembling electronic throttle vehicle is used |
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| CN201510045802.9A CN104626988B (en) | 2015-01-29 | 2015-01-29 | The constant-speed-cruise control system and method that assembling electronic throttle vehicle is used |
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| CN104626988B true CN104626988B (en) | 2017-06-13 |
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| CN116166008A (en) * | 2022-12-30 | 2023-05-26 | 东风汽车股份有限公司 | A constant speed cruise test method, device, equipment and system |
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|---|---|---|---|---|
| US6017290A (en) * | 1997-05-06 | 2000-01-25 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Controlling lockup clutch and shifts as a function of cruise mode and normal mode |
| WO2007132213A1 (en) * | 2006-05-11 | 2007-11-22 | Autokontrol Limited | Speed limiter system |
| CN101648522A (en) * | 2009-08-31 | 2010-02-17 | 冯大钧 | Control method for automatic navigation of vehicle and electronic throttle system |
| CN202294309U (en) * | 2011-10-26 | 2012-07-04 | 长安大学 | Automobile cruise control device |
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2015
- 2015-01-29 CN CN201510045802.9A patent/CN104626988B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6017290A (en) * | 1997-05-06 | 2000-01-25 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Controlling lockup clutch and shifts as a function of cruise mode and normal mode |
| WO2007132213A1 (en) * | 2006-05-11 | 2007-11-22 | Autokontrol Limited | Speed limiter system |
| CN101648522A (en) * | 2009-08-31 | 2010-02-17 | 冯大钧 | Control method for automatic navigation of vehicle and electronic throttle system |
| CN202294309U (en) * | 2011-10-26 | 2012-07-04 | 长安大学 | Automobile cruise control device |
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