CN206038031U

CN206038031U - Mutual calibration system of DCT gear shift signal

Info

Publication number: CN206038031U
Application number: CN201621012412.8U
Authority: CN
Inventors: 何春鸣; 顾为华; 吴春明; 郑文明
Original assignee: Dura Ganxiang Automotive Systems Shanghai Co Ltd
Current assignee: Dura Ganxiang Automotive Systems Shanghai Co Ltd
Priority date: 2016-08-30
Filing date: 2016-08-30
Publication date: 2017-03-22
Anticipated expiration: 2026-08-30

Abstract

The utility model discloses a mutual calibration system of DCT gear shift signal, calibration system includes: a triaxial hall position sensor, thereby the change that triaxial hall position sensor is used for responding to gear level magnet steel position is gathered the signal of P, R, N or D shelves and is sent away with SPI's data mode, a singlechip, the singlechip is used for receiving the gear signal that 3 hall position sensor sent to go out received gear signal transmission through the CAN bus, a DCT, the gear signal of one of four gears of P, R, N or D when DCT is used for gathering the engage a gear to its gear signal transmission who gathers goes out, a gearbox controller, gearbox controller is used for receiving the gear signal that singlechip and DCT sent to carry out the check -up and give the singlechip with the result feedback after the check -up these two gear signals. The utility model discloses a gear signal that triaxial hall position sensor gathered can improve the accuracy that the gear switches with the mutual check -up of the gear signal of DCT collection.

Description

A kind of DCT shift signals cross-check system

Technical field

This utility model is related to a kind of signal cross-check system, more particularly to a kind of DCT shift signals cross-check system System.

Background technology

With the fast development of automobile industry, automobile reliability and safety are more and more concerned；IS026262 terrain vehicles The issue of functional safety international standard, even more proposes further quantizing examination to automobile reliability and safety and wants Ask.

At present, automobile gear shift gear changing mode has purely mechanic drag-line gear shift, pure electronic signal gear shift, mechanical drag-line and electronics Signal gear shift uses several ways parallel.Purely mechanic drag-line gearshift mechanism, is that the gear that hand shift (MT) is generally adopted is controlled Form；And pure electronic signal gear shift, then it is changing of generally adopting of current automatic transmission (AT, DCT) and emerging electron gear shifting (SBW) Shelves control form, auto-manual (AMT) is then the representative that mechanical drag-line and electronic signal gear shift are used parallel, and PRND gear shift is taken Drag-line gear changing mode, then adopts electronic signal gear shift under manual mode.

Several gear changing modes are all one-side collection gear positions signals above, or drive change speed gear box by drag-line The triggering shift sensor collection of gear shift arm, or signals collecting is carried out by shifter gear positions completely.It is purely mechanic Formula (MT) once drag-line linkage go wrong, once some sensors of pure electronic type goes wrong, the vehicle that can all make is driven Sail the even dangerous situation that gets into a difficult position.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of gear gathered by three axle hall position sensors The cross-check of the gear signal that signal is gathered with DCT can improve the DCT shift signals of the accuracy of gear switch and interact school Check system.

For reaching above-mentioned purpose, the technical solution of the utility model is as follows：

A kind of DCT shift signals cross-check system, the check system include：

One or three axle hall position sensors, the three axles hall position sensor are used for sensing the change of gear level magnet steel position Change, gather the signal of P, R, N or D shelves and sent with the data mode of SPI；

One single-chip microcomputer, the single-chip microcomputer are used for receiving the gear signal that 3 axle hall position sensors send, and pass through CAN The gear signal for receiving is sent by bus；

One DCT, the DCT are used for gathering the gear signal of one of tetra- gears of P, R, N or D when hanging shelves, and are gathered To gear signal send；

One gearbox control, the gearbox control are used for receiving the gear signal that single-chip microcomputer and DCT send, and right Two gear signals are verified and the result after verification are fed back to single-chip microcomputer.

In one embodiment of the present utility model, the 3 axle hall position sensor is tri- axle Hall positions of MLX90363 Put sensor.

In one embodiment of the present utility model, the single-chip microcomputer is Freescale single-chip microcomputer S9S12SGN48.

By above-mentioned technical proposal, the beneficial effects of the utility model are：

The gearbox-gear sensor trigger signal that selector drag-line is driven by this utility model is gathered with selector itself Gear signal, carry out real-time, interactive verification, and necessary coping strategy in addition, substantially increase gear switch accuracy, The safe class of the reliability of vehicle drive, stability and automobile.

Description of the drawings

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.

Fig. 1 is this utility model systematic schematic diagram；

Fig. 2 is this utility model working-flow figure；

Numeral and the corresponding component title represented by letter in figure：

10th, three axle hall position sensors 20, single-chip microcomputer 30, DCT 40, gearbox control 50, CAN.

Specific embodiment

In order that technological means, creation characteristic, reached purpose and effect that this utility model is realized are easy to understand, under Face combines and is specifically illustrating, and this utility model is expanded on further.

Shown in Figure 1, the utility model discloses a kind of DCT shift signals cross-check system, check system includes Three axle hall position sensors 10, single-chip microcomputer 20, DCT30 and gearbox control 40；Three axle hall position sensors 10 are used In the change of sensing gear level magnet steel position, gather the signal of P, R, N or D shelves and single-chip microcomputer is sent to the data mode of SPI 20；Three axle hall position sensors 10 are MLX90363, using two-way Redundancy Design, with two individual chips, it is possible to achieve Reliability collection to seven gear positions signals of P, R, N, D, M, M+, M-；Seven gears may be defined to corresponding SPI data, deposit Judge index as gear positions is stored in single-chip microcomputer；Three axle hall position sensors include intelligent dsp chip, with autodiagnosis Cutting capacity, prevents the gear signal of chip output error when there is internal or external mistake.

Single-chip microcomputer 20 is used for receiving the gear signal that 3 axle hall position sensors 10 send, and will be connect by CAN 50 The gear signal for receiving is sent to gearbox control 40；Single-chip microcomputer 20 is Freescale single-chip microcomputer S9S12SGN48, P, R, N, D gear that DCT is collected in real time by Freescale single-chip microcomputers S9S12SG48 by MSCAN modules and CAN transceiver Signal is sent to gearbox control by CAN, so as to the P of gearbox control and the DCT collections for simultaneously receiving, R, N, D gear informations are verified, and the check results of the feedback of real-time detection gearbox control, and signal is not inconsistent will carry out self-inspection simultaneously Self-detection result is sent to into gearbox control；Single-chip microcomputer is collected in three axle hall position sensor of spi bus interface monitor Gear signal while, real-time monitoring diagnoses the working condition (such as voltage, electric current etc.) of selector circuit, and the letter to receiving Breath carries out comprehensive analysis, judges whether to meet nominal situation requirement, forms failure code (DTC) and be sent to change speed gear box when faulty Controller.

DCT30 is used for gathering the gear signal of one of tetra- gears of P, R, N or D when hanging shelves, and the gear for being collected Signal is sent to gearbox control 40；Gearbox control 40 is used for receiving the gear signal that single-chip microcomputer 20 and DCT30 send, And two gear signals are verified and the result after verification is fed back to into single-chip microcomputer 20；Selector internal signal is gathered Meet spi bus agreement, with the signal transmission of TCU or communication according to CAN2.0 communications protocol.

Operation principle of the present utility model is as follows：

Three axle hall position sensors and DCT are in the presence of shift bar and drag-line linkage, while going to gather P, R, N Or the signal of one of tetra- gears of D, and gearbox control is sent to go verification the result of respective collection；If gear signal is interacted Verification passes through, and gearbox control then implements the gear shifting operation of DCT；If gear signal cross-check does not pass through, change speed gear box control Device processed then forces DCT to enter secure operating mode, for example, only allow low speed to move ahead, and brake returns to P/N shelves；Require selector simultaneously Carry out self diagnosis and self diagnosis result is sent to into gearbox control；Check to safety area parking, if selector autodiagnosis Disconnected fault-free, then can overhaul the Sensor section of drag-line linkage and DCT；The peace that driving drives can thus be greatly improved Whole degree.

, on the automobile after electricity (15 establish by cable logical), whether self-inspection selector circuitry operating conditions are normal first for selector；If not Normally, failure code will be formed and is sent to gearbox control (TCU)；It is such as working properly, dynamic triaxial hall position sensing will be opened The self-diagnostic function of device；As self diagnosis are qualified, three axle hall position sensors will sense the change of shift bar magnet steel position, collection The signal of P, R, N or D shelves is simultaneously sent to single-chip microcomputer with the data mode of SPI, and then single-chip microcomputer will be collected by CAN Gear signal is sent to gearbox control, for completing to drive speed change task after gearbox control verification；As self diagnosis do not conform to Lattice, will also form diagnostic trouble code and be sent to gearbox control so as to diagnostic apparatuses diagnosis.

Ultimate principle of the present utility model and principal character and advantage of the present utility model has been shown and described above.One's own profession The technical staff of industry it should be appreciated that this utility model is not restricted to the described embodiments, described in above-described embodiment and description Simply illustrate principle of the present utility model, on the premise of without departing from this utility model spirit and scope, this utility model is also Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed this utility model.This utility model Claimed scope is by appending claims and its equivalent thereof.

Claims

1. a kind of DCT shift signals cross-check system, it is characterised in that the check system includes：

One or three axle hall position sensors, the three axles hall position sensor are used for sensing the change of gear level magnet steel position, The signal of collection P, R, N or D shelves is simultaneously sent with the data mode of SPI；

One single-chip microcomputer, the single-chip microcomputer are used for receiving the gear signal that 3 axle hall position sensors send, and pass through CAN The gear signal for receiving is sent；

The gear signal of one of tetra- gears of P, R, N or D when one DCT, the DCT are used for gathering extension shelves, and collected Gear signal sends；

One gearbox control, the gearbox control are used for receiving the gear signal that single-chip microcomputer and DCT send, and to this two Individual gear signal is verified and the result after verification is fed back to single-chip microcomputer.

2. a kind of DCT shift signals cross-check system according to claim 1, it is characterised in that the 3 axle Hall position Sensor is put for tri- axle hall position sensors of MLX90363.

3. a kind of DCT shift signals cross-check system according to claim 1, it is characterised in that the single-chip microcomputer is Freescale single-chip microcomputer S9S12SGN48.