CN201909967U

CN201909967U - Intelligent signal simulation system for gasoline engine

Info

Publication number: CN201909967U
Application number: CN2010206760462U
Authority: CN
Inventors: 刘杨; 徐江曼; 程勇; 王丽梅; 刘斐
Original assignee: 刘杨
Priority date: 2010-12-23
Filing date: 2010-12-23
Publication date: 2011-07-27
Anticipated expiration: 2020-12-23

Abstract

The utility model relates to an intelligent signal simulation system for a gasoline engine. The intelligent signal simulation system comprises a microprocessor unit and a storage used for storing map data of signals to be simulated, and is characterized by further comprising a signal processing and outputting module, a signal setting module and a communication module. The signal processing and outputting module is connected with the microprocessor unit, the signal setting module is used for setting output signals, the communication module is used for realizing communication with an upper computer, an engine ECU (electronic control unit) and detection equipment, the signal processing and outputting module comprises a switching quantity generating module, an analog quantity generating module and a pulse quantity generating module, the signal setting module includes keys, knobs or switches, and the communication module is an RS232 communication module, an RS485 communication module or CAN (controller area network) communication module. The intelligent signal simulation system for the gasoline engine realizes simulation of various signals during operation of the gasoline engine and communication with the upper computer and the engine ECU. In addition, the intelligent signal simulation system has the advantages of real-time property, adjustability, practicability, convenience and the like, and provides conditions for developing calibration of the gasoline engine ECU and researching and debugging engine detection equipment, and further, efficiency is increased while cost is reduced.

Description

Gasoline engine signal intelligent simulation system

Technical field

The utility model relates to a kind of gasoline engine signal intelligent simulation system, in particular, relates in particular to the gasoline engine signal intelligent simulation system that a kind of suitable gasoline engine ECU exploitation is demarcated and the development of engine checkout equipment is debugged.

Background technology

At present,, make that the development debugging work load of gasoline engine ECU exploitation demarcation and engine checkout equipment is increasing, become increasingly complex along with the fast development of gasoline engine.The gasoline engine experimental stand can be in the whole process of equipment development development, but workload is bigger, expends bigger manpower and materials, and efficient is lower.Except the gasoline engine experimental stand, some can be simulated the development﹠ testing that true engine signal is used for ECU and checkout equipment laboratory stage, help accelerating tempo of development.Traditional engine signal simulation system often can only be simulated the specific engines signal, and the signal output class is less, and controllability is poor; And mostly being external expensive product, cost of development is very high.

Summary of the invention

The utility model provides the gasoline engine signal intelligent simulation system of the development debugging of a kind of suitable gasoline engine ECU exploitation demarcation and engine checkout equipment in order to overcome the shortcoming of above-mentioned technical matters.

Gasoline engine signal intelligent simulation system of the present utility model, comprised the microprocessing unit of computing and control action and be used to store the storer for the treatment of the simulating signal spectrum data, its special feature is: also comprise the signal Processing and the output module that are connected with microprocessing unit, be used for the signal sets module that output signal is set and the communication module of realization and host computer and Engine ECU and checkout equipment communication; Described signal Processing and output module comprise switching value generation module, analog quantity generation module and pulsed quantity generation module, described signal sets module is button, knob or switch, and described communication module is RS232 communication module, RS485 communication module or CAN communication module.Microprocessing unit adopts single-chip microcomputer to carry out the processing and the computing of data; Because the signal of this simulation system simulation is many and complicated, special storer need be set the signal data that simulated is stored, so that directly transfer the data of this signal when simulating signal.Signal Processing and output module comprise the various signals that switching value generation module, analog quantity generation module and pulsed quantity generation module are used to produce and handle engine, so that realize the real simulation to engine signal.The signal sets module can adopt different forms, to realize choosing engine signal; Communication module plays the communication effect with ECU and host computer, so that realize the setting of debugging and parameter.

Gasoline engine signal intelligent simulation system of the present utility model, described microprocessing unit comprises DA interface, AD interface, IO interface and SPI communication interface.Employing has the microprocessing unit of DA interface, AD interface, IO interface and SPI communication interface, helps reducing the setting of microprocessing unit peripheral module, has reduced cost.

Gasoline engine signal intelligent simulation system of the present utility model, described switching value generation module is the IO port or the switch module of microprocessing unit, described analog quantity generation module comprises the AD8600 chip that is connected by parallel data bus line with microprocessing unit, and described pulsed quantity generation module comprises the AD2887 chip that is connected by the spi bus form with microprocessing unit; Described microprocessing unit adopts the chip of SAF-XC164CS-32F40F model, and described storer is the K9F2G08UOB chip of 256M Bytes.The IO port of microprocessing unit and switch module all can be realized the simulation of switch amount signal.

Gasoline engine signal intelligent simulation system of the present utility model, described microprocessing unit is connected with LCD MODULE, and described microprocessing unit is connected with host computer by Upper machine communication module.Be provided with after the LCD MODULE, can drive liquid crystal touch screen, so that carry out choosing and setting of information demonstration and engine signal by touch-screen by LCD MODULE.

The beneficial effects of the utility model are: the utility model is provided with jumbo storer, helps gasoline engine model information and various signal datas to be simulated are stored, and has realized the simulation to various signals in the gasoline engine entire work process; The utility model has been realized respectively the simulation of various signals and choosing corresponding signal to be detected by signalization processing and output module and signal sets module; The utility model also is provided with the communication module that can carry out communication with host computer and ECU, has realized management and the control of host computer to this simulation system.

Description of drawings

Fig. 1 is a structure principle chart of the present utility model;

Fig. 2 is signal Processing of the present utility model and output type synoptic diagram.

Among the figure: 1 microprocessing unit, 2 storeies, 3 signal Processing and output module, 4 LCD MODULE, 5 Upper machine communication module, 6 RS232 communication modules, 7 CAN communication modules, 8 host computers, 9 DA chips, 10 switching value generation modules, 11 spare interfaces, 12 signal sets modules.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.

As shown in Figure 1, provided structure principle chart of the present utility model, it comprises microprocessing unit 1, storer 2, signal Processing and output module 3, LCD MODULE 4, Upper machine communication module 5, RS232 communication module 6, CAN communication module 7, host computer 8, DA chip 9, switching value generation module 10, spare interface 11, signal sets module 12; Microprocessing unit 1 adopts 16 the high-performance single-chip microcomputers SAF-XC164CS-32F40F of Infineon, SAF-XC164CS-32F40F is based on the C166 S V2 framework that strengthens, have outstanding DSP performance, advanced interrupt handling capacity, powerful peripheral hardware group and high-performance on-chip flash or ROM storer, flexible and intelligent PWM unit, High Speed High Precision ADC, powerful communication interface (TwinCAN/RS232/SPI) etc.Storer 2 is connected with microprocessing unit 1, be used to realize the memory action of analog signal data, can select the K9F2G08UOB Flash chip of the 256M Bytes of Samsung for use, respectively its control line and data address multiplexing line are connected to the corresponding port of SAF-XC164CS-32F40F chip, K9F2G08UOB is used to store model information and each signal data, as gasoline engine detonation signal, cylinder pressure signal data etc.Signal Processing and output module 3 comprise switching value generation module, analog quantity generation module and pulsed quantity generation module, as shown in Figure 2, provided signal Processing and output type synoptic diagram, wherein the switching value signal has ignition switch, starting switch, air-conditioning switch, driving switch, fan swicth signal; Analog signals has temperature, pinking, throttle position, lambda sensor output voltage, battery tension, pressure signal, temperature signal wherein comprises intake air temperature, delivery temperature, coolant temperature, fuel oil temperature, crankcase temperature and cylinder temperature, and pressure signal comprises admission pressure, cylinder pressure, fuel pressure and engine oil pressure; Shown pulsed quantity signal comprises tach signal, crankshaft-position signal and camshaft-position signal.

Wherein, according to analog quantity and pulsed quantity difference, need use high speed and low speed DA chip, select respectively with SAF-XC164CS-32F40F by the parallel data address bus interface be connected 16 the tunnel export that high speed D chip AD8600 are connected with the SPI interface 8 the tunnel export low speed DA chip AD7228, as obtain adjustable sinusoidal transient speed signals, gasoline engine detonation signal etc. of being similar to; The switching value module can have SAF-XC164CS-32F40F IO mouth or switch to set, as air-conditioning switch etc.Host computer 8 is connected with microprocessing unit 1 by Upper machine communication module 5, so that corresponding application is set on host computer, treats the signal of simulation and chooses.Shown RS232 communication module 6 and CAN communication module 7 can be the self-contained peripheral modules of microprocessing unit 1, also can adopt respective chip to expand.By CAN or RS232 communication interface, can realization and the communication of Engine ECU or commissioning device.LCD MODULE 4 is used to drive liquid crystal touch screen, so that signal is shown in real time and choose signal to be simulated by this liquid crystal touch screen.Shown signal sets module 12 is connected with microprocessing unit, is used to choose signal to be simulated, and signal sets module 12 can adopt multiple different form, as adopting liquid crystal touch screen, button, switch, knob or upper computer software.Described signal Processing and output module 3 output terminals are connected with DA chip 9, switching value generation module 10 and spare interface.The button control chip is selected CH452A, and liquid crystal selects 320240-3 to show, connects the corresponding interface of SAF-XC164CS-32F40F single-chip microcomputer respectively.Can realize the setting and the demonstration of each output signal, as can setting different rotating speeds according to the gasoline engine type, but and display setting result and curve.Simultaneously, leave and host computer and Engine ECU or checkout equipment communication interface, can carry out signal sets and demonstration by host computer, be convenient to debugging by communications protocol; Can test institute's development equipment communication interface equally.

The course of work of the present utility model:

Behind system's electrifying startup, can carry out the gasoline engine signal sets, signals selected connection ECU that develops or checkout equipment can be debugged by host computer or button, switch.Can check the signal specifying information by liquid crystal or host computer, be convenient to the debugging exploitation.

Example recited above only is that the utility model preferred implementation is described; be not that design of the present utility model and scope are limited; under the prerequisite that does not break away from the utility model design philosophy; engineering technical personnel make the technical solution of the utility model in this area various distortion and improvement all should belong to protection domain of the present utility model.

Claims

1. gasoline engine signal intelligent simulation system, comprised the microprocessing unit (1) of computing and control action and be used to store the storer (2) for the treatment of the simulating signal spectrum data, it is characterized in that: also comprised the signal Processing and the output module (3) that are connected with microprocessing unit, be used for the signal sets module (12) that output signal is set and the communication module of realization and host computer and Engine ECU and checkout equipment communication; Described signal Processing and output module (3) comprise switching value generation module, analog quantity generation module and pulsed quantity generation module, described signal sets module (12) is button, knob or switch, and described communication module is RS232 communication module, RS485 communication module or CAN communication module.

2. gasoline engine signal intelligent simulation system according to claim 1 is characterized in that: described microprocessing unit (1) comprises DA interface, AD interface, IO interface and SPI communication interface.

3. gasoline engine signal intelligent simulation system according to claim 1 and 2, it is characterized in that: described switching value generation module is the IO port or the switch module of microprocessing unit (1), described analog quantity generation module comprises the AD8600 chip that is connected by parallel data bus line with microprocessing unit, and described pulsed quantity generation module comprises the AD2887 chip that is connected by the spi bus form with microprocessing unit; Described microprocessing unit (1) adopts the chip of SAF-XC164CS-32F40F model, and described storer (2) is the K9F2G08UOB chip of 256M Bytes.

4. gasoline engine signal intelligent simulation system according to claim 1 and 2 is characterized in that: described microprocessing unit (1) is connected with LCD MODULE (4), and described microprocessing unit is connected with host computer by Upper machine communication module (5).