CN202520420U

CN202520420U - Intelligent remote accelerator switching controller based on CAN (Controller Area Network) bus

Info

Publication number: CN202520420U
Application number: CN2012201347773U
Authority: CN
Inventors: 杨勇; 张耘强; 胡建中; 林少豪
Original assignee: SAIC Iveco Hongyan Commercial Vehicle Co Ltd
Current assignee: SAIC Iveco Hongyan Commercial Vehicle Co Ltd
Priority date: 2012-04-01
Filing date: 2012-04-01
Publication date: 2012-11-07
Anticipated expiration: 2022-04-01

Abstract

The utility model 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 network and a vehicle-borne meter. The main accelerator, the remote accelerator and the engine ECU are connected to the remote accelerator switching controller in parallel; and the remote accelerator switching controller is communicated with the vehicle-bonre meter through the CAN network. The intelligent remote accelerator switching controller has the beneficial technical effects that a accelerator engaged in operation can be automatically identified in an electronic control manner and no selector switch is needed to switch the accelerator, so the cost is reduced. The intelligent remote accelerator switching controller is convenient to install and operate. Based on the vehicle speed collected, a driver can select the main accelerator or the remote accelerator (to change the speed of the vehicle) according to a certain judgment strategy, so the driving safety of the vehicle is improved.

Description

Intelligent remote throttle switching controller based on the CAN bus

Technical field

The utility model relates to a kind of vehicle accelerator control technique, relates in particular to a kind of intelligent remote throttle switching controller based on the 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 type engineering machinery need make vehicle under idling mode under some operating mode, the control engine speed, and making motor is that car-mounted device provides power; If using the main throttle pedal operates; Often very inconvenient; Many times need outside operator cabin, utilize special long-range throttle that engine speed is controlled, wherein in fact; The throttle of being responsible for vehicle driving 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 through selector switch; The increase of selector switch often relates to the change of instrument platen; If the instrument platen does not have many switch hole positions, possibly also relate to the die sinking again of instrument platen, these all can cause the cost that increases; Moreover throttle switching controller is not in the past judged the state of vehicle when realizing the throttle conversion, if when driving, has carried out the misoperation that throttle switches, and this will bring bigger hidden danger to traffic safety.

The model utility content

To the problem in the background technique; To the problem in the background technique; The utility model provides a kind of intelligent remote throttle switching control system based on the 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; Communicate through the CAN network between long-range throttle switching controller and the onboard instruments;

Onboard instruments transfers to long-range throttle switching controller through the CAN network with GES;

Long-range throttle switching controller is controlled gating or disconnection between main throttle and long-range throttle and the Engine ECU according to GES, main throttle position signal and long-range throttle position signal.

The invention allows for a kind of preferred structure of long-range throttle switching controller: said 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 raises from the CAN network through the CAN module and fetches data;

Single-chip microcomputer is through gating or disconnection between multiway analog switch control main throttle and long-range throttle and the Engine ECU;

Single-chip microcomputer is gathered main throttle position signal and long-range throttle position signal through the A/D module.

The useful technique effect of the utility model is: the throttle through automatically controlled mode comes automatic identification operating need not the switching of throttle selector switch, thereby reduces cost, installation, easy to operate; And through gathering the speed of a motor vehicle, use certain determination strategy to select main throttle or long-range throttle, increase traveling security.

Description of drawings

The system architecture principle schematic of Fig. 1, the utility model;

The long-range throttle switching controller structural principle schematic representation of Fig. 2, the utility model;

The long-range throttle switching controller processing procedure flow diagram of Fig. 3, the utility model.

Embodiment

CAN (Controller Area Network local area control net) bus is proposed by BOSCH company; It has advantages such as outstanding reliability, real-time; And its application in automobile industry is very ripe, stable; The inventor considers this bussing technique is used for the control system of the utility model and the communication of other electronics module, can guarantee that control system can get access to accurate, real-time information.In view of this, the scheme of the utility model is:

A kind of intelligent remote throttle switching controller based on the 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; Communicate through CAN network 5 between long-range throttle switching controller 4 and the onboard instruments 6; Onboard instruments 6 transfers to long-range throttle switching controller 4 through CAN network 5 with GES; Long-range throttle switching controller 4 is controlled gating or disconnection between main throttle 1 and long-range throttle 2 and the Engine ECU 3 according to GES, main throttle 1 position signal and long-range throttle 2 position signals.

Aforesaid system adopts mature C AN bussing technique to ensure the efficient, stable of communication, and long-range throttle switching controller 4 adopts electronic control module to realize that volume is little, can be integrated in the operator cabin, and cab space is not almost had influence; Simultaneously, the selection of main throttle 1 and long-range throttle 2 need not special selector switch and just can discern the throttle of operating automatically, has ensured handling safety, has stopped the possibility of misoperation.

The utility model has also proposed a kind of concrete structure mode of long-range throttle switching controller 4: said 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 raises from CAN network 5 through CAN module 4-2 and fetches data;

Single-chip microcomputer 4-6 is through gating or disconnection between multiway analog switch 4-1 control main throttle 1 and long-range throttle 2 and the Engine ECU 3;

Single-chip microcomputer 4-6 gathers main throttle 1 position signal and long-range throttle 2 position signals through A/D module 4-5.

Certainly, the control system of the utility model also needs the control corresponding method could realize the control purpose, and the controlling method step of mating with the utility model is:

1) program initialization;

2) single-chip microcomputer 4-6 gathers main throttle 1 position signal through A/D module 4-5, gets into 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, then get into step 6);

3) single-chip microcomputer 4-6 gathers long-range throttle 2 position signals through A/D module 4-5, if the A/D transformation result of long-range throttle 2 position signals is zero, then gets into step 6); If the A/D transformation result of long-range throttle 2 position signals is non-vanishing, then get into step 4);

4) single-chip microcomputer 4-6 obtains the GES that onboard instruments 6 sends over through CAN module 4-2 from CAN network 5, if the speed of a motor vehicle is zero, then gets into step 5); If the speed of a motor vehicle is non-vanishing, then get into step 6);

5) single-chip microcomputer 4-6 controls long-range throttle 2 and Engine ECU 3 gatings through multiway analog switch 4-1, and provides throttle position signal to Engine ECU 3 by long-range throttle 2; Return step 2);

6) single-chip microcomputer 4-6 controls main throttle 1 and Engine ECU 3 gatings through multiway analog switch 4-1, and provides throttle position signal to Engine ECU 3 by main throttle 1; Return step 2);

Behind the program start, abovementioned steps 2) to 6) circular flow.

After adopting the aforementioned control program of the utility model; After in case long-range throttle 2 is switch activated; Whether system can switch main throttle 1 and long-range throttle 2 according to procedure judges, and this has ensured the Security of vehicle with regard to having been avoided causing because of driver's misoperation the possibility of error action of device.

Claims

1. intelligent remote throttle switching controller based on the CAN bus, it 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); The parallel long-range throttle switching controller (4) that inserts of main throttle (1), long-range throttle (2) and Engine ECU (3) three; Communicate through CAN network (5) between long-range throttle switching controller (4) and the onboard instruments (6);

Onboard instruments (6) transfers to long-range throttle switching controller (4) through CAN network (5) with GES;

Long-range throttle switching controller (4) is controlled gating or disconnection between main throttle (1) and long-range throttle (2) and the Engine ECU (3) according to GES, main throttle (1) position signal and long-range throttle (2) position signal.

2. the intelligent remote throttle switching controller based on the CAN bus according to claim 1 is characterized in that: said 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) raises from CAN network (5) through CAN module (4-2) and fetches data;

Single-chip microcomputer (4-6) is through gating or disconnection between multiway analog switch (4-1) control main throttle (1) and long-range throttle (2) and the Engine ECU (3);

Single-chip microcomputer (4-6) is gathered main throttle (1) position signal and long-range throttle (2) position signal through A/D module (4-5).