CN103941595B - Simulation method for vehicle data acquisition simulation system - Google Patents
Simulation method for vehicle data acquisition simulation system Download PDFInfo
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- CN103941595B CN103941595B CN201410205552.6A CN201410205552A CN103941595B CN 103941595 B CN103941595 B CN 103941595B CN 201410205552 A CN201410205552 A CN 201410205552A CN 103941595 B CN103941595 B CN 103941595B
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Abstract
The invention relates to a vehicle data acquisition simulation system and a vehicle data acquisition simulation method. The simulation system comprises a power supply module, a data interface conversion module, a computer system, a signal acquisition module and a system rack module, wherein the data interface conversion module is respectively connected with the computer system and the signal acquisition module, the power supply module powers the data interface conversion module and the signal acquisition module, and the system rack module is respectively connected with the data interface conversion module and the signal acquisition module. According to the simulation system, a circuit adopts a modular design, all modules are relatively independent, the integral performance is more reliable, and the work of the other modules can not be influenced by the upgrading of single module; furthermore, components and parts selected by the circuit are good in electrical performance and low in price; meanwhile, the vehicle data acquisition simulation system has the functions of data real-time memory and data error detection, so that the error rate of the finally received data can be reduced at the utmost; in addition, the output of a wheel speed sensor can be truly simulated by a high-side signal monitoring function, and the switching between driving and driven wheel speed output modes can be realized by an interface.
Description
Technical field
The invention belongs to data collecting field, specifically it is related to a kind of vehicle data collection analogue system.
Background technology
From automobile is born, the data acquisition emulation test system of vehicle, in the exploitation of vehicle, is tested, demarcation aspect is just
Play vital role.In recent years, the raising of the progress with vehicle technology and automobile driving speed, this importance
Show more and more obvious.Numerous automobile engineers has poured into the substantial amounts of heart in terms of improving and optimizing automobile simulation system
Blood.Existing analogue system has following deficiency：1st, circuit aspect does not adopt modularized design, and data-interface is reserved shortage and can be prepared
Property, type of sampling signal lacks motility.Although the contact of each circuit is closely, but as long as asking occurs in a part having circuit
Topic, will affect circuit other parts, and the reliability of hardware circuit reduces；2nd, hardware and software is relatively independent, does not use software
Program goes to detect hardware fault.Circuit is more complicated, and integration degree is not high enough, high cost.3rd, systems soft ware can not answer actual need
Ask replacing, digital independent display versatility is relatively strong but also therefore specific aim is not enough, and display is not directly perceived.4th, the transmission speed of gathered data
Degree is limited, and stability is not enough, is easily lost error in collection and transmitting procedure.5th, it is unable to wheel speed emulation and can not simulate wheel speed
The true output of sensor.
Content of the invention
For the shortcoming of above prior art, the present invention provides a kind of overall performance reliable and can contact closely, each
The compatibility of intermodule is strong, and hardware is relatively independent with software industry, also has the emulation system that each signal is provided by real devices simultaneously
System.
To achieve these goals, the technical solution used in the present invention is：A kind of vehicle data collection analogue system, this is
System includes power module 1, data-interface modular converter 2, computer system 3, signal acquisition module 4, system rack module 5, number
It is connected with computer system 3 and signal acquisition module 4 respectively according to interface modular converter 2, power module 1 is data-interface modulus of conversion
Block 2 and signal acquisition module 4 is powered, system rack module 5 is respectively connecting to data-interface modular converter 2 and signal acquisition module
4.
Described power module 1 includes power input interface 11, power module body 12, power output interface 13, isolation electricity
Source output interface 14；Power input interface 11 connects power module body 12, and power module body 12 connects power output interface
13 power for data-interface modular converter 2, and insulating power supply output interface 14 is powered for signal acquisition module 4.
Described data-interface modular converter 2 includes data handling system 28, and data handling system 28 is connect with CAN communication respectively
Mouth 22, simulation input mouth 23, numeral input mouth 24, simulation output mouth 25, digital output 26, FSC high-speed data acquisition interface
27 connections, realize collection and the output of data；Data handling system 28 is connected to LAN communication interface 21 and realizes data and computer
The exchange of system 3.
Signal acquisition module 4 includes controllable current source module 41, wheel speed flash interface 42, differential conversion module 43, pressure
Sampling module 44, digital quantity sampling module 45, ECU interface 46, force samples module 44 connects realizes oil to simulation input mouth 23
The collection input of road pressure signal, ECU interface 46 is connected by wheel speed flash interface 42 realizes ECU to controllable current source module 41
Enable and the wheel speed output signal receiving controllable current source module 41 that flash signal exports to controllable current source, controllable current source
Module 41 connects that to realize wheel speed current signal to digital output 26 output-controlled；ECU interface 46 connects to CAN communication interface 22
Realize the CAN signal conversion of ECU data modular converter；ECU interface 46 connects realizes ECU SPI letter to differential conversion module 43
Number it is converted into the reliability that differential signal transmission increased high speed data transfer；Differential conversion module 43 connects to FSC high speed number
Realize the FSC data acquisition of ECU according to acquisition interface 27.
Described system rack module 5 includes car load oil circuit and wheel cylinder 51, user input signal module 52, pressure transducer connect
Mouth 53, user input signal module 52 connects to digital quantity sampling module 45, and digital quantity sampling module 45 connects to data-interface
Modular converter 2 realizes user control signal collection；Car load oil circuit and wheel cylinder 51 connect to pressure sensor interface 53, pressure sensing
Device interface 53 connects to force samples module 44.
A kind of emulation mode of vehicle data collection analogue system, the method comprises the following steps：Step one, system are by city
Electricity supplies electricity to power input interface 11 and to system power supply and passes through insulating power supply output interface 14 to pressure by power module body 12
Force transducer is powered；Step 2, car load oil circuit and wheel cylinder 51 are sent to data by 44 pressure signals of force samples module and connect
Mouth modular converter 2, changes into lan signal by data handling system 28 and issues computer system 3；Step 3, user input signal mould
Block 52 connects, to digital quantity sampling module 45, control signal voltage conversion is become the signal that numeral input mouth 24 can identify by counting
Change into lan signal according to processing system 28 and issue computer system 3；Step 4, the fsc signal of ECU are through 43 turns of differential conversion module
Send out into differential signal lan signal is changed into by data handling system 28 and issue computer system 3；Step 5, the CAN of ECU interface 46
Signal is direct-connected to be changed into lan signal to data handling system 28 and issues computer system 3；Step 6, the wheel speed flash of ECU interface 46
Signal connects to the output enable control of controllable current source module 41, and when ECU flash works, current output module could work
Simulate the monitoring function that real wheel speed sensors working condition completes to flash signal simultaneously, digital output 26 connects can
The size of control current source module 41 control electric current output, digital output supplies the low side of wheel speed of ECU interface 46.
Beneficial effects of the present invention are：1st, circuit adopts modularized design, relatively independent between modules, and overall performance is more
Reliable, the upgrading of separate modular does not interfere with the work of other modules.2nd, components and parts good electric property selected by circuit, price is low.
3rd, circuit adopts 4 laminate PCB design, using sticking-element, two-sided paster, and more compact structure, integrated level is high, and system compact is more
Easily.4th, there is data real-time storage data error detection function, the mistake eventually receiving data can be reduced with maximum possible
Rate by mistake.5th, can truly simulate wheel speed sensors output with flash signal monitoring function, also active/passive can be realized by interface
Wheel speed output mode switching 6, real CAN data transmission module, can simulated automotive CAN data exchange.7th, real car
The igniting of body user input signal, brake pedal, car load oil circuit and wheel cylinder, vacuum booster, master cylinder.
Brief description
The labelling of the content to the expression of description of the invention accompanying drawing and in figure is briefly described below：
Fig. 1 is the system architecture diagram of the specific embodiment of the invention；
Fig. 2 is the system operation structure chart of the specific embodiment of the invention.
Wherein 1. power modules, 2. data-interface modular converter, 3. computer system, 4. signal acquisition module, 5. system
Stand module, 11. power input interfaces, 12. power module bodies, 13. power output interfaces, 14. insulating power supply output interfaces,
21.LAN communication interface, 22.CAN communication interface, 23. simulation input mouths, 24. numeral input mouths, 25 simulation output mouths, 26. numbers
Word delivery outlet, 27.FSC high-speed data acquisition interface, 28. data handling systems, 41. controllable current source modules, 42. wheel speed flash
Interface, 43. differential conversion modules, 44. force samples modules, 45. digital quantity sampling modules, 46.ECU interface, 51. car load oil circuits
And wheel cylinder, 52. user input signal modules, 53. pressure sensor interfaces.
Specific embodiment
Below against accompanying drawing, by the description to embodiment, for example involved each component of the specific embodiment of the present invention
Shape, construction, the mutual alignment between each several part and annexation, the effect of each several part and operation principle, manufacturing process and
Operate with method etc., is described in further detail, to help those skilled in the art to the inventive concept of the present invention, technology
Scheme has more complete, accurate and deep understanding.
As shown in figure 1, a kind of vehicle data collection analogue system, this system includes：Power module 1, data-interface conversion
Module 2, computer system 3, signal acquisition module 4, system rack module 5, data-interface modular converter 2 respectively with department of computer science
System 3 and signal acquisition module 4 connect, and power module 1 is data-interface modular converter 2 and signal acquisition module 4 is powered；System bay
Frame module 5 is respectively connecting to data-interface modular converter 2 and signal acquisition module 4, and the electronic control unit ECU for test connects
It is connected in signal acquisition module 4, circuit of the present invention adopts modularized design, relatively independent between modules, and overall performance more may be used
Lean on, the upgrading of separate modular does not interfere with the work of other modules.
As shown in Fig. 2 power module 1 include power input interface 11, power module body 12, power output interface 13,
Insulating power supply output interface 14：Described system power supply module 1 by power input interface 11 connect power module body 12,
Power module body 12 connects power output interface 13 and powers for data-interface modular converter 2, and insulating power supply output interface 14 is
Signal acquisition module 4 is powered.
Data-interface modular converter 2 includes data handling system 28, and data handling system 28 is respectively at computer system 3
LAN communication interface 21, CAN communication interface 22, simulation input mouth 23, numeral input mouth 24, simulation output mouth 25, digital output
26th, FSC high-speed data acquisition interface 27 connects, and realizes collection and the output of data；Data handling system is connected to LAN communication and connects
Mouth 21 realizes the exchange of data and PC.In described data-interface modular converter 2, digital output 26 connects controllable current source mould
Block 41 realizes control and the reception wheel speed low side signals that wheel speed output enables.Simulation output mouth 25 is reserved as analog output and is connect
Mouthful.CAN communication interface 22 is connected to ECU by ECU interface 46 and connects CAN signal to ECU.FSC high-speed data acquisition interface
27 connect to differential conversion module 43 receive ECU send over the FSC data after differential transformation.Simulation input mouth 23 passes through pressure
Power sampling module 44 receives the pressure that pressure sensor interface 53 sends.Numeral input mouth 24 passes through digital quantity sampling module
The control signal input of 45 receiving user's input signaling modules 52, the data signal realized between ECU and MCU exchanges.
Signal acquisition module 4 includes controllable current source module 41, wheel speed flash interface 42, differential conversion module 43, pressure
Sampling module 44, digital quantity sampling module 45, ECU interface 46, power module body 12 connects insulating power supply output interface 14 and is
Force samples module 44 is powered, and signal acquisition module 4 internal pressure sampling module 44 connects to pressure sensor interface 53.Pressure
Sampling module 44 connects to analog quantity input 23 the collection input realizing oil circuit pressure signal, and in signal acquisition module 4, ECU connects
Mouth 46 is connected by wheel speed flash interface 42 realizes what ECU flash signal exported to controllable current source to controllable current source module 41
Enable and receive the wheel speed output signal of controllable current source module 41, controllable current source module 41 connects real to digital output 26
Existing wheel speed current signal is output-controlled；ECU interface 46 connects to CAN communication interface 22 CAN realizing ECU data modular converter
Signal is changed；ECU interface 46 connects to differential conversion module 43 to be realized ECU SPI signal and is converted into differential signal transmission increased
The reliability of high speed data transfer；Differential conversion module 43 connects to FSC high-speed data acquisition interface 27 the FSC number realizing ECU
According to collection；Data handling system 28 carries out redundancy check in real time to the data being collected, and abandons number of non-compliances according to it is ensured that being adopted
The validity and reliability of collection data.
System rack module 5 includes car load oil circuit and wheel cylinder 51, user input signal module 52, pressure sensor interface
53, user input signal module 52 connects to digital quantity sampling module 45, and digital quantity sampling module 45 connects to numeral input mouth
24 realize user control signal collection；System rack module 5 car load oil circuit and wheel cylinder 51 connect to pressure transducer 53.
The present invention is controlled using following methods, step one, system by mains-supplied to power input interface 11 by electricity
Source module body 12 exports 1 road 12V power supply and powers to pressure transducer to system power supply and insulating power supply output interface 14.
Car load oil circuit on step 2, stand and wheel cylinder 51 are transmitted by 44 pressure signals of pressure transducer sampling module
To data-interface modular converter 2, lan signal is changed into by data handling system 28 and issue computer system 3.
User input signal module 52 on step 3, stand connects control signal voltage to digital quantity sampling module 45
It is converted into the signal that numeral input mouth 24 can identify and changes into lan signal by data handling system 28 issuing computer system 3.
Step 4, the fsc signal of ECU forward into differential signal through modular converter 43 of checking the mark and are changed into by data handling system 28
Lan signal issues computer system 3.
Step 5, the CAN signal of ECU interface 46 direct-connected change into lan signal to data handling system 28 and issue department of computer science
System 3.Step 6, ECU interface 46 wheel speed flash signal connect to the output enable control of controllable current source module 41, high in ECU
During the work of side, current output module could export and simulate real wheel speed sensors working condition, complete wheel speed signal simultaneously
Flash monitoring function, digital output 26 connects the wheel of the size supply ECU interface 46 of current source module 41 control electric current output
The low side of speed.
Above in conjunction with accompanying drawing, the present invention is exemplarily described it is clear that the present invention implements is not subject to aforesaid way
Restriction, as long as employing the improvement of various unsubstantialities that method of the present invention design and technical scheme are carried out, or without changing
Enter and the design of the present invention and technical scheme are directly applied to other occasions, all within protection scope of the present invention.
Claims (1)
1. a kind of emulation mode of vehicle data collection analogue system, the method is based on a kind of vehicle data collection analogue system,
This system includes power module (1), data-interface modular converter (2), computer system (3), signal acquisition module (4), system
Stand module (5), data-interface modular converter (2) is connected with computer system (3) and signal acquisition module (4) respectively, power supply
Module (1) is data-interface modular converter (2) and signal acquisition module (4) power supply, system rack module (5) are respectively connecting to count
According to interface modular converter (2) and signal acquisition module (4)；Described power module (1) includes power input interface (11), power supply mould
Block body (12), power output interface (13), insulating power supply output interface (14)；Power input interface (11) connects power module
Body (12), it is that data-interface modular converter (2) is powered that power module body (12) connects power output interface (13), isolation electricity
Source output interface (14) is that signal acquisition module (4) is powered；Described data-interface modular converter (2) includes data handling system
(28), data handling system (28) respectively with CAN communication interface (22), simulation input mouth (23), numeral input mouth (24), simulation
Delivery outlet (25), digital output (26), FSC high-speed data acquisition interface (27) connect, and realize collection and the output of data；Number
It is connected to the exchange that LAN communication interface (21) realizes data and computer system (3) according to processing system (28)；Signal acquisition module
(4) include controllable current source module (41), wheel speed flash interface (42), differential conversion module (43), force samples module (44),
Digital quantity sampling module (45), ECU interface (46), force samples module (44) connects realizes oil circuit pressure to simulation input mouth (23)
The collection input of force signal, ECU interface (46) is connected by wheel speed flash interface (42) to be realized to controllable current source module (41)
Enable and the wheel speed output signal receiving controllable current source module (41) that ECU flash signal exports to controllable current source, controlled
Current source module (41) connects that to realize wheel speed current signal to digital output (26) output-controlled；ECU interface (46) connect to
CAN communication interface (22) realizes the CAN signal conversion of ECU data modular converter；ECU interface (46) connects to differential conversion mould
Block (43) is realized ECU SPI signal and is converted into the reliability that differential signal transmission increased high speed data transfer；Differential conversion mould
Block (43) connects to FSC high-speed data acquisition interface (27) the FSC data acquisition realizing ECU；Described system rack module (5) bag
Include car load oil circuit and wheel cylinder (51), user input signal module (52), pressure sensor interface (53), user input signal module
(52) connect to digital quantity sampling module (45), digital quantity sampling module (45) connects to be realized to data-interface modular converter (2)
User control signal gathers；Car load oil circuit and wheel cylinder (51) connect to pressure sensor interface (53), pressure sensor interface
(53) connect to force samples module (44), its feature exists：The method comprises the following steps：
Step one, system are given system power supply to power input interface (11) by power module body (12) and passed through by mains-supplied
Insulating power supply output interface (14) is powered to pressure transducer；
Step 2, car load oil circuit and wheel cylinder (51) are sent to data-interface conversion by force samples module (44) pressure signal
Module (2), changes into lan signal by data handling system (28) and issues computer system (3)；
Step 3, user input signal module (52) connect, to digital quantity sampling module (45), control signal voltage conversion are become number
The signal that word input port (24) can identify changes into lan signal by data handling system (28) and issues computer system (3)；
Step 4, the fsc signal of ECU forward into differential signal through differential conversion module (43) and are changed into by data handling system (28)
Lan signal issues computer system (3)；
Step 5, the CAN signal of ECU interface (46) direct-connected change into lan signal to data handling system (28) and issue department of computer science
System (3)；
Step 6, the wheel speed flash signal of ECU interface (46) connect to controllable current source module (41) output enable control,
During the work of ECU flash, current output module could the real wheel speed sensors working condition of work simulation complete to flash simultaneously
The monitoring function of signal, digital output (26) connects the size of controllable current source module (41) control electric current output, and numeral is defeated
The low side of wheel speed of outlet supply ECU interface (46).
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| CN109739078A (en) * | 2018-12-28 | 2019-05-10 | 芜湖伯特利电子控制系统有限公司 | A kind of wheel speed signal processing redundancy approach |
| CN110739949A (en) * | 2019-11-04 | 2020-01-31 | 清华大学 | Automobile wheel speed signal processing circuit and automobile |
| CN112051834B (en) * | 2020-09-02 | 2021-10-08 | 柏科智能(厦门)科技有限公司 | Universal vehicle data acquisition/simulation method and system |
| CN113093567A (en) * | 2021-03-24 | 2021-07-09 | 一汽奔腾轿车有限公司 | Simulation system and simulation method of AK protocol wheel speed sensor |
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| CN101739024B (en) * | 2009-11-27 | 2012-09-26 | 上海汽车集团股份有限公司 | System for integrating half-physical simulation test platform for complete vehicle electronic control device |
| JP5384724B2 (en) * | 2010-03-31 | 2014-01-08 | ボッシュ株式会社 | Brake fluid pressure control method and apparatus |
| CN102331721B (en) * | 2011-09-28 | 2013-09-18 | 潍柴动力股份有限公司 | Method, device and system for testing dynamic analog simulation of electronic control diesel engine |
| CN202281952U (en) * | 2011-11-04 | 2012-06-20 | 中国重汽集团济南动力有限公司 | Function testboard for vehicle body control system of heavy-duty vehicle |
| CN203870408U (en) * | 2014-05-14 | 2014-10-08 | 芜湖伯特利电子控制系统有限公司 | Vehicle data acquisition simulation system |
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