CN102606318B - Intelligent remote accelerator switching controller based on CAN (controller area network) bus and control method - Google Patents

Intelligent remote accelerator switching controller based on CAN (controller area network) bus and control method Download PDF

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Publication number
CN102606318B
CN102606318B CN201210094263.4A CN201210094263A CN102606318B CN 102606318 B CN102606318 B CN 102606318B CN 201210094263 A CN201210094263 A CN 201210094263A CN 102606318 B CN102606318 B CN 102606318B
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China
Prior art keywords
throttle
long
range
signal
switching controller
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CN201210094263.4A
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CN102606318A (en
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杨勇
张耘强
胡建中
林少豪
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SAIC Iveco Hongyan Commercial Vehicle Co Ltd
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SAIC Iveco Hongyan Commercial Vehicle Co Ltd
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Abstract

The invention discloses an intelligent remote accelerator switching controller based on a CAN (controller area network) bus, which comprises a main accelerator, a remote accelerator, an engine ECU (electronic control unit), a remote accelerator switching controller, a CAN and a vehicular instrument. The main accelerator, the remote accelerator and the engine ECU are connected into the remote accelerator switching controller in parallel, and the remote accelerator switching controller is communicated with the vehicular instrument via the CAN. The invention further discloses an intelligent remote accelerator switching control method based on the CAN bus. The intelligent remote accelerator switching controller and the intelligent remote accelerator switching control method have the advantages that the operating accelerator is automatically identified by means of electronic control, a selector switch for switching the accelerators is omitted, accordingly, cost is reduced, installation and operation are convenient, the main accelerator or the remote accelerator is selected by means of acquiring the vehicle speed and applying a certain judging strategy, and driving safety is enhanced.

Description

Intelligent remote throttle switching controller and controlling method based on CAN bus
Technical field
The present invention relates to a kind of vehicle accelerator control technique, relate in particular to a kind of intelligent remote throttle switching controller and controlling method based on CAN bus.
Background technique
Along with the great development of national economy, urbanization, the demand of engineering machinery is grown with each passing day.This class engineering machinery, under some operating mode, need to make vehicle under idling mode, and control engine rotating speed makes motor provide power for car-mounted device; If use main throttle pedal to operate, often very inconvenient, in fact many times need to be outside operator cabin, utilize special long-range throttle to control engine speed, wherein, the throttle of being responsible for Vehicle Driving Cycle on such vehicle is commonly defined as main throttle, and the throttle of being responsible for the action of car-mounted device is commonly defined as long-range throttle; Obviously, main throttle and long-range throttle need certain handover mechanism to stablize, to work safely by support vehicles;
Throttle switching controller in the past all needs a special throttle selector switch, select main throttle to work or long-range throttle works by selector switch, the increase of selector switch often relates to the change of instrument platen, if instrument platen does not have many switch hole positions, may also relate to the die sinking again of instrument platen, these all can cause the cost increasing; Moreover throttle switching controller in the past, in the time realizing throttle conversion, does not judge the state of vehicle, if in the time of driving, has carried out the misoperation that throttle switches, this will bring larger hidden danger to traffic safety.
Summary of the invention
For the problem in background technique, the present invention proposes a kind of intelligent remote throttle switching controller based on CAN bus, its structure is: it is made up of main throttle, long-range throttle, Engine ECU, long-range throttle switching controller, CAN network and onboard instruments; The long-range throttle switching controller of the parallel access of main throttle, long-range throttle and Engine ECU three; Between long-range throttle switching controller and onboard instruments, communicate by CAN network;
Onboard instruments transfers to long-range throttle switching controller by CAN network by vehicle speed signal;
Long-range throttle switching controller, according to vehicle speed signal, main throttle position signal and long-range throttle position signal, is controlled gating or disconnection between main throttle and long-range throttle and Engine ECU.
The invention allows for a kind of preferred structure of long-range throttle switching controller: described long-range throttle switching controller is made up of multiway analog switch, CAN module, A/D module and single-chip microcomputer; Multiway analog switch, CAN module and A/D module three are connected with single-chip microcomputer;
Single-chip microcomputer is raised and fetches data from CAN network by CAN module;
Single-chip microcomputer is by gating or disconnection between multiway analog switch control main throttle and long-range throttle and Engine ECU;
Single-chip microcomputer gathers main throttle position signal and long-range throttle position signal by A/D module.
On the basis of aforementioned hardware configuration, the invention allows for a kind of intelligent remote throttle switching control method based on CAN bus, this controlling method step is:
1) program initialization;
2) single-chip microcomputer gathers main throttle position signal by A/D module, enters step 3) if the A/D transformation result of main throttle position signal is zero; If the A/D transformation result of main throttle position signal is non-vanishing, enter step 6);
3) single-chip microcomputer gathers long-range throttle position signal by A/D module, if the A/D transformation result of long-range throttle position signal is zero, enters step 6); If the A/D transformation result of long-range throttle position signal is non-vanishing, enter step 4);
4) single-chip microcomputer obtains from CAN network the vehicle speed signal that onboard instruments sends over by CAN module, if the speed of a motor vehicle is zero, enters step 5); If the speed of a motor vehicle is non-vanishing, enter step 6);
5) single-chip microcomputer is by the long-range throttle of multiway analog switch control and Engine ECU gating, and provides throttle position signal to Engine ECU by long-range throttle; Return to step 2);
6) single-chip microcomputer is by multiway analog switch control main throttle and Engine ECU gating, and provides throttle position signal to Engine ECU by main throttle; Return to step 2);
After program starts, abovementioned steps 2) to 6) circular flow.
Useful technique effect of the present invention is: automatically identify the throttle operating by automatically controlled mode, without the switching of throttle selector switch, thereby reduce cost, installation, easy to operate; And by gathering the speed of a motor vehicle, use certain determination strategy to select main throttle or long-range throttle, increase the Security of driving.
Accompanying drawing explanation
Fig. 1, system architecture principle schematic of the present invention;
Fig. 2, long-range throttle switching controller structural principle schematic diagram of the present invention;
Fig. 3, long-range throttle switching controller processing procedure flow diagram of the present invention.
Embodiment
CAN(Controller Area Network local area control net) bus proposes by BOSCH company, it has the outstanding advantage such as reliability, real-time, and its application in automobile industry is very ripe, stable, inventor considers the communication for controller of the present invention and other electronics module by this bussing technique, can guarantee that controller can get accurate, real-time information.Given this, the solution of the present invention is:
An intelligent remote throttle switching controller based on CAN bus, it is made up of main throttle 1, long-range throttle 2, Engine ECU 3, long-range throttle switching controller 4, CAN network 5 and onboard instruments 6; The long-range throttle switching controller 4 of the parallel access of main throttle 1, long-range throttle 2 and Engine ECU 3 threes; Between long-range throttle switching controller 4 and onboard instruments 6, communicate by CAN network 5; Onboard instruments 6 transfers to long-range throttle switching controller 4 by CAN network 5 by vehicle speed signal; Long-range throttle switching controller 4, according to vehicle speed signal, main throttle 1 position signal and long-range throttle 2 position signals, is controlled gating or disconnection between main throttle 1 and long-range throttle 2 and Engine ECU 3.
Aforesaid controller, adopts ripe CAN bussing technique to ensure the efficient, stable of communication, and long-range throttle switching controller 4 adopts electronic control module to realize, and volume is little, can be integrated in operator cabin, on cab space almost without affecting; Meanwhile, the selection of main throttle 1 and long-range throttle 2 just can identify without special selector switch the throttle operating automatically, has ensured handling safety, has stopped the possibility of misoperation.
The invention allows for a kind of concrete structure mode of long-range throttle switching controller 4: described long-range throttle switching controller 4 is made up of multiway analog switch 4-1, CAN module 4-2, A/D module 4-5 and single-chip microcomputer 4-6; Multiway analog switch 4-1, CAN module 4-2 are connected with single-chip microcomputer 4-6 with A/D module 4-5 three;
Single-chip microcomputer 4-6 is raised and fetches data from CAN network 5 by CAN module 4-2;
Single-chip microcomputer 4-6 controls gating or the disconnection between main throttle 1 and long-range throttle 2 and Engine ECU 3 by multiway analog switch 4-1;
Single-chip microcomputer 4-6 gathers main throttle 1 position signal and long-range throttle 2 position signals by A/D module 4-5.
On the basis of aforementioned hardware configuration, the invention allows for a kind of intelligent remote throttle switching control method based on CAN bus, this controlling method step is:
1) program initialization;
2) single-chip microcomputer 4-6 gathers main throttle 1 position signal by A/D module 4-5, enters step 3) if the A/D transformation result of main throttle 1 position signal is zero; If the A/D transformation result of main throttle 1 position signal is non-vanishing, enter step 6);
3) single-chip microcomputer 4-6 gathers long-range throttle 2 position signals by A/D module 4-5, if the A/D transformation result of long-range throttle 2 position signals is zero, enters step 6); If the A/D transformation result of long-range throttle 2 position signals is non-vanishing, enter step 4);
4) single-chip microcomputer 4-6 obtains from CAN network 5 vehicle speed signal that onboard instruments 6 sends over by CAN module 4-2, if the speed of a motor vehicle is zero, enters step 5); If the speed of a motor vehicle is non-vanishing, enter step 6);
5) single-chip microcomputer 4-6 controls long-range throttle 2 and Engine ECU 3 gatings by multiway analog switch 4-1, and provides throttle position signal to Engine ECU 3 by long-range throttle 2; Return to step 2);
6) single-chip microcomputer 4-6 controls main throttle 1 and Engine ECU 3 gatings by multiway analog switch 4-1, and provides throttle position signal to Engine ECU 3 by main throttle 1; Return to step 2);
After program starts, abovementioned steps 2) to 6) circular flow.
Adopt after aforementioned control program of the present invention, after once long-range throttle 2 is switch activated, whether system can be switched main throttle 1 and long-range throttle 2 according to procedure judges, and the possibility that this has just been avoided causing because of driver's misoperation error action of device, has ensured the Security of vehicle.
Intelligent remote throttle switching controller based on CAN bus of the present invention just can identify without throttle selector switch the throttle operating automatically, and by gathering the speed of a motor vehicle, use certain determination strategy to select main throttle or long-range throttle, thereby minimizing cost, installation, easy to operate, increases the Security of driving.

Claims (3)

1. the intelligent remote throttle switching controller based on CAN bus, is characterized in that: it is made up of main throttle (1), long-range throttle (2), Engine ECU (3), long-range throttle switching controller (4), CAN network (5) and onboard instruments (6); Main throttle (1), long-range throttle (2) and Engine ECU (3) the three long-range throttle switching controller of parallel access (4); Between long-range throttle switching controller (4) and onboard instruments (6), communicate by CAN network (5);
Onboard instruments (6) transfers to long-range throttle switching controller (4) by CAN network (5) by vehicle speed signal;
Long-range throttle switching controller (4), according to vehicle speed signal, main throttle (1) position signal and long-range throttle (2) position signal, is controlled gating or disconnection between main throttle (1) and long-range throttle (2) and Engine ECU (3).
2. the intelligent remote throttle switching controller based on CAN bus according to claim 1, is characterized in that: described long-range throttle switching controller (4) is made up of multiway analog switch (4-1), CAN module (4-2), A/D module (4-5) and single-chip microcomputer (4-6); Multiway analog switch (4-1), CAN module (4-2) and A/D module (4-5) three are connected with single-chip microcomputer (4-6);
Single-chip microcomputer (4-6) is raised and fetches data from CAN network (5) by CAN module (4-2);
Single-chip microcomputer (4-6) is controlled gating or the disconnection between main throttle (1) and long-range throttle (2) and Engine ECU (3) by multiway analog switch (4-1);
Single-chip microcomputer (4-6) gathers main throttle (1) position signal and long-range throttle (2) position signal by A/D module (4-5).
3. the intelligent remote throttle switching control method based on CAN bus, is characterized in that: this controlling method step is:
1) program initialization;
2) single-chip microcomputer (4-6) gathers main throttle (1) position signal by A/D module (4-5), enters step 3) if the A/D transformation result of main throttle (1) position signal is zero; If the A/D transformation result of main throttle (1) position signal is non-vanishing, enter step 6);
3) single-chip microcomputer (4-6) gathers long-range throttle (2) position signal by A/D module (4-5), if the A/D transformation result of long-range throttle (2) position signal is zero, enters step 6); If the A/D transformation result of long-range throttle (2) position signal is non-vanishing, enter step 4);
4) single-chip microcomputer (4-6) obtains from CAN network (5) vehicle speed signal that onboard instruments (6) sends over by CAN module (4-2), if the speed of a motor vehicle is zero, enters step 5); If the speed of a motor vehicle is non-vanishing, enter step 6);
5) single-chip microcomputer (4-6) is controlled long-range throttle (2) and Engine ECU (3) gating by multiway analog switch (4-1), and provides throttle position signal to Engine ECU (3) by long-range throttle (2); Return to step 2);
6) single-chip microcomputer (4-6) is controlled main throttle (1) and Engine ECU (3) gating by multiway analog switch (4-1), and provides throttle position signal to Engine ECU (3) by main throttle (1); Return to step 2);
After program starts, abovementioned steps 2) to 6) circular flow.
CN201210094263.4A 2012-04-01 2012-04-01 Intelligent remote accelerator switching controller based on CAN (controller area network) bus and control method Active CN102606318B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103628686B (en) * 2013-11-13 2016-05-04 河南森源重工有限公司 A kind of pumping system control method for concrete mixer
CN103726935B (en) * 2013-12-23 2016-08-17 三一汽车起重机械有限公司 Throttle changing method, system and engineering machinery
CN109989837A (en) * 2017-12-29 2019-07-09 陕西重型汽车有限公司 Double remote throttle control devices

Citations (5)

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Publication number Priority date Publication date Assignee Title
US4919096A (en) * 1987-12-28 1990-04-24 Hitachi, Ltd. Electronic throttle controlling apparatus for use in an internal combustion engine
CN201786464U (en) * 2010-09-13 2011-04-06 北汽福田汽车股份有限公司 Electronic remote accelerator system
CN201833881U (en) * 2010-09-26 2011-05-18 青特集团有限公司 Remote throttle control device
CN102108903A (en) * 2009-12-25 2011-06-29 中国第一汽车集团公司 Remote accelerator control method
CN202520420U (en) * 2012-04-01 2012-11-07 上汽依维柯红岩商用车有限公司 Intelligent remote accelerator switching controller based on CAN (Controller Area Network) bus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919096A (en) * 1987-12-28 1990-04-24 Hitachi, Ltd. Electronic throttle controlling apparatus for use in an internal combustion engine
CN102108903A (en) * 2009-12-25 2011-06-29 中国第一汽车集团公司 Remote accelerator control method
CN201786464U (en) * 2010-09-13 2011-04-06 北汽福田汽车股份有限公司 Electronic remote accelerator system
CN201833881U (en) * 2010-09-26 2011-05-18 青特集团有限公司 Remote throttle control device
CN202520420U (en) * 2012-04-01 2012-11-07 上汽依维柯红岩商用车有限公司 Intelligent remote accelerator switching controller based on CAN (Controller Area Network) bus

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