CN106080449A - Use passenger car energy consumption data acquisition unit and the control method of CAN - Google Patents
Use passenger car energy consumption data acquisition unit and the control method of CAN Download PDFInfo
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- CN106080449A CN106080449A CN201610612692.4A CN201610612692A CN106080449A CN 106080449 A CN106080449 A CN 106080449A CN 201610612692 A CN201610612692 A CN 201610612692A CN 106080449 A CN106080449 A CN 106080449A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0236—Circuits relating to the driving or the functioning of the vehicle for economical driving
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/84—Data processing systems or methods, management, administration
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Vehicle Body Suspensions (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Use the passenger car energy consumption data acquisition unit of CAN, including power supply voltage regulation unit, intelligent cell, system reset unit, data storage cell, debugging interface, display unit, acceleration detecting unit, CAN interface unit, communication interface level conversion unit, integrated car load signal element, wireless communication module, PC RS 232 interface.The load of intelligent cell detection passenger vehicle and the acceleration signal of three axles, the inclination angle of three axles is calculated by the acceleration information of three axles, the data such as the speed of passenger vehicle, the amount of fuel of consumption, fuel consumption are read by CAN interface unit, the data collected are analyzed by the algorithm of software design and process, draw the effective consumption rate of real-time fuel oil, the data of the conformance with standard test condition simultaneously filtered out, are shown relevant data by display unit.Advantage is can to gather the data that passenger car energy consumption is relevant real-time, and the data that passenger car energy consumption is relevant are sent to data processing centre, in order to realizes full automatic passenger car energy consumption data analysis, process, assess, improves work efficiency and the accuracy of data.
Description
Technical field
The present invention relates to a kind of energy consumption data acquisition device, especially with the passenger car energy consumption data acquisition packaging of CAN
Put, belong to energy consumption data acquisition technical field.
Background technology
Energy-saving monitoring is an important means of government driving Utilizing Energy Sources in Reason." People's Republic of China's energy conservation
Method " clear stipulaties, relevant transportation authorities of State Council to be responsible for the relevant neck of whole nation transportation according to respective responsibility
The Energy Conservation Supervision management work in territory, formulates the Fuel Consumption standard limit of transportation operation car and boat, non-compliant, no
Must be used for operating.According to relative national standards, various places should be strengthened, to the detection of passenger stock Fuel Consumption and supervision and management, accelerating
Eliminate, update the old commerial vehicle of highly energy-consuming.
Currently also have on some new type passenger cars and employ wisdom operation system, to vehicle technology realtime monitoring, it is achieved
Vehicle fault remote diagnosis, it is ensured that vehicle normal technology state.System can carry out reality to the bad steering behavior of driver
Time monitoring, specification driver behavior, reduce potential safety hazard, control fuel oil consumption.Comprehensive by vehicle operation
Monitoring with analyze, auxiliary in technical measures such as vehicle adjustment, make vehicle technology performance and working line environment Perfect Matchings.This
Wisdom operation system has certain facilitation to energy-saving and emission-reduction work, but due to general the most not detection to integrated car load,
Do not have road pavement flatness and linearity to detect yet, thus with traffic industry standard " operating passenger car Fuel Consumption limit value
And measuring method " gap farther out, it is impossible to regulation Fuel Consumption limit value compare, it is impossible at the bar of amateur test
The energy consumption whether conformance with standard of passenger vehicle is determined under part.
Summary of the invention
It is an object of the invention to propose a kind of passenger car energy consumption data acquisition unit using CAN and control method,
By additional sensor and Bus interface in real time energy consumption related data to passenger vehicle be acquired, calculating process and
Display, and to the data collected, be analyzed according to the standard conditions of passenger car energy consumption test and screen, taking out conformance with standard
The data of test condition, store, and also by wireless module, relevant data are sent to data processing centre in time, in order to
The computer of data processing centre shows the data of the energy consumption of passenger vehicle in graphical form by the long-range monitoring of software of passenger car energy consumption, enters
One step ground, the long-range monitoring of software of passenger car energy consumption may also provide the inquiry of historical data, automatically generates daily sheet, moon form, year form
Function, by the comparison to energy consumption monitoring data Yu Fuel Consumption standard limit, provide the alarm letter that passenger car energy consumption exceeds standard
Breath, thus can promote the quality of data of passenger car energy consumption statistics and monitoring, and progressively foundation covers the energy-conservation of the transportation whole industry
Emission reduction work checking system, improves automobile energy-saving and reduces discharging evaluation index and method.
The present invention is achieved in that the passenger car energy consumption data acquisition unit using CAN, it is characterised in that including:
Power supply voltage regulation unit (1), intelligent cell (2), system reset unit (3), data storage cell (4), debugging interface (5), display
Unit (6), acceleration detecting unit (7), CAN interface unit (8), communication interface level conversion unit (9), integrated car load signal
Unit (10), wireless communication module (11), PC RS-232 interface (12)；Wherein:
Power supply voltage regulation unit (1) be intelligent cell (2), system reset unit (3), data storage cell (4), debugging interface (5),
Display unit (6), acceleration detecting unit (7), CAN interface unit (8), communication interface level conversion unit (9), integrated car load
Signal element (10), wireless communication module (11) are powered, and constitute electrical connection with each several part；
Intelligent cell (2) is the core of this device, runs under program control, with power supply voltage regulation unit (1), system reset list
Unit (3), data storage cell (4), debugging interface (5), display unit (6), acceleration detecting unit (7), CAN interface unit
(8), communication interface level conversion unit (9), integrated car load signal element (10) constitute electrical connection；
System reset unit (3) is used for intelligent cell electrification reset, constitutes electrical connection with intelligent cell (2)；
Data storage cell (4) is for storing the data of the conformance with standard test condition that intelligent cell filters out and not being sent to
The data of data processing centre, constitute electrical connection with intelligent cell (2)；
Debugging interface (5) is for intelligent cell artificial debugging and downloads, and constitutes electrical connection with intelligent cell (2)；
Display unit (6) is used for showing the data that the passenger car energy consumption that intelligent cell collects is correlated with and the conformance with standard filtered out
The data of test condition, constitute electrical connection with intelligent cell (2)；
Acceleration detecting unit (7), for detecting acceleration when passenger vehicle runs, constitutes electrical connection with intelligent cell (2)；
CAN interface unit (8), for the adaptive engine diagnostic interface transceiving data with passenger vehicle, constitutes electricity with intelligent cell (2)
Gas connects；
Communication interface level conversion unit (9) is for the level signal of adaptive intelligent cell with the communication equipment being connected, with intelligence
Energy unit (2), wireless communication module (11) and PC RS-232 interface (12) composition are electrically connected.
Integrated car load signal element (10), for detecting the load of vehicle, constitutes electrical connection with intelligent cell (2)；
Wireless communication module (11) is used for connecting wireless network and communicating with data processing centre, with communication interface level conversion list
Unit (9) constitutes electrical connection；
PC RS-232 interface (12), for configuring the basic parameter of passenger vehicle, constitutes electricity with communication interface level conversion unit (9)
Gas connects.
Further, the data that passenger car energy consumption is relevant include that speed, fuel consumption, fuel consumption, passenger vehicle three axle add
Speed and inclination angle, load.
Further, PC RS-232 interface, for being connected to the RS232 interface of PC, by run in PC with
Supporting passenger vehicle parameter configuration software after, by this interface configuration basic parameter of passenger vehicle, operational factor and limit range.Its
In basic parameter include: vehicle commander, overall width, overall height, car weight, name of product, model, the date of production, engine model, start
Machine discharge capacity, power, seating capacity, gross mass, kerb weight, fuel type etc..
Further, data processing centre includes database server, the computer running passenger car energy consumption monitoring of software, shows
Show device and printer.
Described acceleration detecting unit includes 3-axis acceleration sensor U5 and electric capacity C16～C19, and the model of U5 is
MMA7455L, is the digital 3-axis acceleration sensor of low-power consumption, high shock resistance, and inside has signal condition, low-pass filtering, temperature
Spend functions such as compensating, test oneself；Electric capacity C16 and C17 is connected in the 1st of U5 the, between 2 pins, and against U5 the 1st, 2 pins,
The capacity of electric capacity C16 and C17 is respectively 10 μ F and 0.1 μ F；Electric capacity C18 and C19 is connected in the 5th of U5 the, between 6 pins, and
Against U5 the 5th, 6 pins, the capacity of electric capacity C18 and C19 is respectively 10 μ F and 0.1 μ F；The 1st of U5,4,6,7 pins are connected to
3.3V power supply；The 2nd of U5,5 pins are connected to ground；8th pin of U5 is connected to the 45th pin of microcontroller U3 in Fig. 3；U5
The 9th pin be connected to the 46th pin of microcontroller U3 in Fig. 3；13rd pin of U5 is that the SDA serial number of I2C communication it is believed that
Number line, is connected to the 43rd pin of microcontroller U3 in Fig. 3；14th pin of U5 is the SCL clock holding wire of I2C communication, even
Receive the 42nd pin of microcontroller U3 in Fig. 3.
Described CAN interface unit includes CAN transceiver U6 and electric capacity C20, resistance R10, R11, jumper wire device JP1, socket
CZ4.R11 is terminating resistor, and resistance is 120 ohm, can access in circuit with jumper wire device JP1 as required.CAN transceiver U6
Model is the 33rd pin that the 1st pin of SN65HVD230DR, U5 is connected to microcontroller U3 in Fig. 3, and the 2nd pin of U5 connects
Ground, the 3rd pin of U5 connects 3.3V power supply, and the 4th pin of U5 is connected to the 32nd pin of microcontroller U3 in Fig. 3；The 6th of U5,7
Pin is connected respectively to the 2nd and the 1st pin of socket CZ4, and the 8th pin of U5 passes through resistance R10 ground connection；Resistance R11 and wire jumper
Device JP1 series connection is followed by between the 1st in socket CZ4,2 pins, the 3rd pin ground connection of CZ4.Electric capacity C20 is connected to the 3rd pin of U6
And between ground.
Described integrated car load signal element includes passenger vehicle front axle load signal unit and passenger vehicle hind axle load signal
Unit；Passenger vehicle front axle load signal unit and passenger vehicle hind axle load signal unit have identical structure.
Use the control method of the passenger car energy consumption data acquisition unit of CAN, comprise the steps:
Step S201, initialization；
Step S202, by I2C bus and acceleration detecting unit communication, read 3-axis acceleration data；
Step S203, the inclination angle of calculating passenger vehicle；
Step S204, storage acceleration and inclination data；
The data such as step S205, the speed reading passenger vehicle and fuel consumption；
Step S206, call detection with calculate integrated car load subprogram；
Step S207, call effective specific fuel consumption analytical calculation subprogram；
Step S208, check whether the communications command receiving PC；Entering step S209 to judge, if not receiving command frame, then entering
Enter step S211；If receiving command frame, then enter step S210 and process command frame data, subsequently into step S211；
Step S211, check whether the communications command receiving GPRS wireless communication module；Enter step S212 to judge, if not receiving
Command frame, then enter step S214；If receiving command frame, then enter step S213 process command frame data, and by GPRS to
Data processing centre sends data, subsequently into step S214；
Step S214, need video data to OLED module output, the number that passenger car energy consumption that display intelligent cell collects is relevant
According to this and the data of conformance with standard test condition that filter out；
Program is again introduced into step S202, repeats step S202～S214, goes round and begins again, circular flow.
The present invention uses above-mentioned formant parts to constitute according to above-mentioned design.Its operation principle is: intelligent cell
The load of detection passenger vehicle and the acceleration signal of three axles, calculated the inclination angle of three axles, connect by CAN by the acceleration information of three axles
Mouth unit reads the data such as the speed of passenger vehicle, the amount of fuel of consumption, fuel consumption, to the data collected by software design
Algorithm is analyzed and processes, and draws the effective consumption rate of real-time fuel oil, the number of the conformance with standard test condition simultaneously filtered out
According to, display unit show relevant data, wireless communication module relevant data are transferred to data by network and process
Center, after the monitoring of software of data processing centre processes, display in real time is about the energy consumption data of passenger vehicle, and provides historical data
Inquire about, automatically generate daily sheet, moon form, the function of year form, by energy consumption monitoring data and Fuel Consumption limit value mark
Accurate comparison, provides the warning information that passenger car energy consumption exceeds standard.
Advantages of the present invention and effect:
(1) the energy consumption phases such as the speed of passenger vehicle, fuel consumption, fuel consumption, acceleration, load can be gathered real-time
The data closed, the data such as the inclination angle of analytical calculation passenger vehicle and the effective consumption rate of fuel oil.
(2) use 4G or GPRS, cdma wireless data communication technology, the data that passenger car energy consumption is relevant are sent at data
Reason center, in order to realize full automatic passenger car energy consumption data analysis, process, assess, improves work efficiency and the accuracy of data,
Can implement to force to eliminate or scrap offer data support to high energy consumption high pollution vehicle for administration section.
Accompanying drawing explanation
The invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings.
Fig. 1 is the functional-block diagram that the present invention uses the passenger car energy consumption data acquisition unit of CAN.
Fig. 2 is the power supply voltage regulation unit circuit catenation principle figure of embodiment.
Fig. 3 is the intelligent cell circuit catenation principle figure of embodiment.
Fig. 4 is system reset element circuit catenation principle figure.
Fig. 5 is the data storage cell circuit catenation principle figure of embodiment.
Fig. 6 is the debugging interface circuit catenation principle figure of embodiment.
Fig. 7 is the display unit circuit catenation principle figure of embodiment.
Fig. 8 is the acceleration detecting unit circuit catenation principle figure of embodiment.
Fig. 9 is the CAN interface element circuit catenation principle figure of embodiment.
Figure 10 is communication interface level conversion unit circuit and the PC RS-232 interface catenation principle figure of embodiment.
Figure 11 is the wireless communication module circuit catenation principle figure of embodiment.
Figure 12, Figure 13 are the integrated car load signal unit circuit catenation principle figures of embodiment.
Figure 14 is that the passenger vehicle of embodiment is weighed capacitance sensor scheme of installation.
Figure 15 is the software control method main program flow chart of embodiment.
Figure 16 is detection and the calculating integrated car load subroutine flow chart of the software control method of embodiment.
Figure 17 is the effective specific fuel consumption analytical calculation subroutine flow chart of the software control method of embodiment.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
Refer to Fig. 1, use the passenger car energy consumption data acquisition unit of CAN, including power supply voltage regulation unit (1), intelligence
Unit (2), system reset unit (3), data storage cell (4), debugging interface (5), display unit (6), acceleration detection list
Unit (7), CAN interface unit (8), communication interface level conversion unit (9), integrated car load signal element (10), radio communication mold
Block (11), PC RS-232 interface (12).Wherein: power supply voltage regulation unit (1) be intelligent cell (2), system reset unit (3),
Data storage cell (4), debugging interface (5), display unit (6), acceleration detecting unit (7), CAN interface unit (8), communication
Interface level converting unit (9), integrated car load signal element (10), wireless communication module (11) are powered, and constitute electricity with each several part
Gas connects；Intelligent cell (2) is the core of this device, runs under program control, multiple with power supply voltage regulation unit (1), system
Bit location (3), data storage cell (4), debugging interface (5), display unit (6), acceleration detecting unit (7), CAN interface list
Unit (8), communication interface level conversion unit (9), integrated car load signal element (10) constitute electrical connection；System reset unit
(3) for intelligent cell electrification reset, electrical connection is constituted with intelligent cell (2)；Data storage cell (4) is used for storing intelligence
The data of the conformance with standard test condition that sieve unit is selected and be not sent to the data of data processing centre, with intelligent cell
(2) electrical connection is constituted；Debugging interface (5) is for intelligent cell artificial debugging and downloads, and constitutes with intelligent cell (2)
Electrical connection；Display unit (6) is used for showing the data that the passenger car energy consumption that intelligent cell collects is correlated with and the symbol filtered out
The data of standardization test condition, constitute electrical connection with intelligent cell (2)；Acceleration detecting unit (7) is used for detecting passenger vehicle
Acceleration during operation, constitutes electrical connection with intelligent cell (2)；CAN interface unit (8) is for the adaptive electromotor with passenger vehicle
Diagnosis interface transceiving data, constitutes electrical connection with intelligent cell (2)；Communication interface level conversion unit (9) is for adaptive intelligence
Can the level signal of unit and the communication equipment being connected, with intelligent cell (2), wireless communication module (11) and PC RS-232
Interface (12) composition is electrically connected.Integrated car load signal element (10), for detecting the load of vehicle, is constituted with intelligent cell (2)
Electrical connection；Wireless communication module (11) is used for connecting wireless network and communicating with data processing centre, with communication interface level
Converting unit (9) constitutes electrical connection；PC RS-232 interface (12) is for configuring the basic parameter of passenger vehicle, with communication interface electricity
Flat converting unit (9) constitutes electrical connection.
Please referring further to Fig. 2, power supply voltage regulation unit is by socket CZ1, switch power module U1, integrated voltage stabilizer U2, electricity
Hold C1～C4, resistance R1, diode D1, LED composition, constitute electrical connection, for phase with the other parts of circuit
Close part and working power is provided.From the 24V DC voltage of CZ1 input vehicle battery, after D1, U1 voltage stabilizing, export 5V voltage,
Again through U2(model be LD1117S33C) export 3.3V voltage after voltage stabilizing, power for intelligent cell and interlock circuit, with circuit
Relevant portion constitutes electrical connection.Electric capacity C1～C4 is filter capacitor, and resistance R1 and LED provide the state of power supply
Instruction.Diode D1 is that power supply inputs polarity protection elements, will not damage this device when electric power polarity connects inverse time.
Refer to Fig. 3, intelligent cell is made up of high performance microcontroller U3 and relevant circuit thereof, microcontroller U3's
Model is STM32F103C8T6, kernel is the Cortex-M3 CPU of ARM32 position, has the FLASH memory of 64KB, 20KB
SRAM, be internally integrated agitator, debugging circuit, temperature sensor, 12 ADC analog to digital conversion circuits, up to 7 intervalometers and
9 ports, it is the kernel control chip of passenger car energy consumption data acquisition unit, constitutes electrical connection with peripheral each unit,
Run under the control of program.Crystal oscillator X1, electric capacity C5, C6, resistance R2 and the composition vibration of microcontroller U3 the 5th, 6 pin inner portions circuit
Circuit, as the clock source of microcontroller.Crystal oscillator Y1, electric capacity C7, C8 form low with microcontroller U3 the 3rd, 4 pin inner portions circuit
Frequency oscillator circuit, as the low-frequency clock source of microcontroller.Resistance R3 one end is connected to the 44th pin of microcontroller U3, another
End ground connection；Resistance R4 one end is connected to the power supply 3V3 of 3.3V, and the other end is connected to the 1st pin of microcontroller U3；Resistance R5 mono-
End is connected to the power supply 3V3 of 3.3V, and the other end is connected to the 9th pin of microcontroller U3.Resistance R6 one end is connected to microcontroller
20th pin of device U3, other end ground connection.Electric capacity C9～C13 plays power supply filter action.The 24th of microcontroller U3,36,48 draw
Foot is connected with the power supply 3V3 of 3.3V.The 23rd of microcontroller U3,35,47,8 pin ground connection.Socket CZ3 is and display unit
The socket connected, the pin of the network numbering that each pin is identical with microcontroller U3 is connected.
Refer to Fig. 4, system reset unit is made up of resistance R9 and electric capacity C14, button S1, and resistance R9 and electric capacity C14 is
Microcontroller provides power-on reset signal, and button S1 provides reset signal manually for microcontroller.
Refer to Fig. 5, integrated circuit U4 is data storage cell, and model is AT24C04, is used for storing micro-controller program
The data of the conformance with standard test condition filtered out and the current data not being sent to data processing centre,
Refer to Fig. 6, CZ2 is debugging interface, and microcontroller is carried out emulating by this interface, program, debugged and download program, respectively
The pin of the network numbering that pin is identical with Fig. 3 microcontroller U3 is connected.
Refer to Fig. 7, display unit is made up of OLED display module M1 and plug CT3, CZT3 be spacing be the 18 of 2.0mm
Pin plug, each contact pin is corresponding with the 18 of OLED module M1 pins in the circuit board to be connected, and CZ3B is at outside and in Fig. 3 socket
Electric terminal corresponding for CZ3 connects.The model of OLED module M1 is HGS128647, it is possible to accomplish quickly to respond, and can be the lowest
Temperature environment and broader temperature range under normally work, performance is better than LCD.
Refer to Fig. 8, acceleration detecting unit is made up of integrated circuit U5 and electric capacity C16～C19, and the model of U5 is
MMA7455L, is the digital 3-axis acceleration sensor of low-power consumption, high shock resistance, and inside has signal condition, low-pass filtering, temperature
Spend functions such as compensating, test oneself；Electric capacity C16 and C17 is connected in the 1st of U5 the, between 2 pins, and against U5 the 1st, 2 pins,
The capacity of electric capacity C16 and C17 is respectively 10 μ F and 0.1 μ F；Electric capacity C18 and C19 is connected in the 5th of U5 the, between 6 pins, and
Against U5 the 5th, 6 pins, the capacity of electric capacity C18 and C19 is respectively 10 μ F and 0.1 μ F；The 1st of U5,4,6,7 pins are connected to
3.3V power supply；The 2nd of U5,5 pins are connected to ground；8th pin of U5 is connected to the 45th pin of microcontroller U3 in Fig. 3；U5
The 9th pin be connected to the 46th pin of microcontroller U3 in Fig. 3；13rd pin of U5 is that the SDA serial number of I2C communication it is believed that
Number line, is connected to the 43rd pin of microcontroller U3 in Fig. 3；14th pin of U5 is the SCL clock holding wire of I2C communication, even
Receive the 42nd pin of microcontroller U3 in Fig. 3.
Refer to Fig. 9, CAN interface unit include CAN transceiver U6 and electric capacity C20, resistance R10, R11, jumper wire device JP1,
Socket CZ4.R11 is terminating resistor, and resistance is 120 ohm, can access in circuit with jumper wire device JP1 as required.CAN transceiver
The model of U6 is the 33rd pin that the 1st pin of SN65HVD230DR, U5 is connected to microcontroller U3 in Fig. 3, the 2nd pin of U5
Ground connection, the 3rd pin of U5 connects 3.3V power supply, and the 4th pin of U5 is connected to the 32nd pin of microcontroller U3 in Fig. 3；The of U5
6,7 pins are connected respectively to the 2nd and the 1st pin of socket CZ4, and the 8th pin of U5 passes through resistance R10 ground connection；Resistance R11 and jumping
Line device JP1 series connection is followed by between the 1st in socket CZ4,2 pins, the 3rd pin ground connection of CZ4.What electric capacity C20 was connected to U6 the 3rd draws
Between foot and ground.
Refer to Figure 10, communication interface level conversion unit is by interface conversion integrated circuit U7, electric capacity C21～C25, socket
CZ5, CZ6 form, and its function is by interface level conversion.The model of interface conversion integrated circuit U7 is SP3232EEN.Socket
CZ5 is PC RS-232 interface, for being connected to the RS232 interface of PC, by running matched passenger vehicle in PC
After parameter configuration software, by this interface configuration basic parameter of passenger vehicle, operational factor and limit range.Basic parameter therein
Including: vehicle commander, overall width, overall height, car weight, name of product, model, the date of production, engine model, engine displacement, power,
Seating capacity, gross mass, kerb weight, fuel type etc..
Refer to Figure 11, this is GPRS wireless communication module circuit catenation principle figure.Plug CT6 is connected to GPRS channel radio
The RS232 interface of letter module M2, is connected the CZ6 in CT6 with Figure 10 during use, by socket CZ6 and the 1st of plug CT6 the
Pin sends vehicle energy by wireless communication module M2 to data processing centre to GPRS wireless communication module power supply, microcontroller
The data that consumption is relevant.
Refer to Figure 12, passenger vehicle hind axle load signal unit includes condenser type load signal sensor C31, capacitance sensing
Device conditioning integrated circuit U8, operational amplifier U9A, electric capacity C32～C38, resistance R31～the R39 group converted for differential signal
Become.The 14th pin that model is CAV424, U8 of capacitance sensor conditioning integrated circuit U8 and the indirect condenser type load letter on ground
Number sensor C31, the 16th of U8 the, 12,15, connect the 10th pin ground connection of electric capacity C32～C35, U8 between 13 pins and ground respectively；
Between 3rd pin of the 2nd pin of U8 and the indirect resistance R31, U8 on ground and the 1st pin and the ground of the indirect resistance R32, U8 on ground
11st pin of connecting resistance R33, U8 connects+5V power supply, is meeting electric capacity C36 to ground at this pin；The 4th of U8,5 pins are indirect
The 4th of resistance R34, U8, the indirect resistance R35 of 6 pins；6th pin of the 6th pin of U8 indirect electric capacity C37, U8 over the ground
Outside is further connected with resistance R36 and R37 of series connection；One end ground connection of R37, another termination operational amplifier U9A's being connected with R36
3rd pin；Be further connected with outside 5th pin of U8 series connection resistance R38 and R39, R39 one termination operational amplifier U9A the 1st
Pin, the 2nd pin of another termination operational amplifier U9A being connected with R38；1st pin of operational amplifier U9A is connected to figure
18th pin of microcontroller U3 in 3, measures the load of passenger vehicle hind axle by the ADC change-over circuit within U3；Operation amplifier
The 4th pin ground connection of device U9A, the 8th pin connects 5V power supply, in close proximity to the 8th pin and the indirect electric capacity C38 of the 4th pin.
Refer to Figure 13, passenger vehicle front axle load signal unit includes condenser type load signal sensor C41, capacitance sensing
Device conditioning integrated circuit U10, operational amplifier U9B, electric capacity C42～C47, resistance R41～the R49 group converted for differential signal
Become.The 14th pin that model is CAV424, U10 of capacitance sensor conditioning integrated circuit U10 and the indirect condenser type load on ground
The 16th of signal transducer C41, U10,12,15, connect the 10th pin of electric capacity C42～C45, U10 between 13 pins and ground respectively
Ground connection；1st pin of the indirect resistance R42, U10 on the 2nd pin of U10 and the 3rd pin of the indirect resistance R41, U10 on ground and ground
Connect+5V power supply with the 11st pin of the indirect resistance R43, U10 on ground, at this pin, meet electric capacity C46 to ground；The of U10
4, the 4th of indirect resistance R44, U10 the of 5 pins the, the indirect resistance R45 of 6 pins；6th pin of U10 indirect electric capacity over the ground
Resistance R46 and R47 of series connection it is further connected with outside 6th pin of C47, U10；One end ground connection of R47, the other end being connected with R46
Connect the 5th pin of operational amplifier U9B；A termination of resistance R48 and R49, R49 of series connection it is further connected with outside 5th pin of U10
7th pin of operational amplifier U9B, the 6th pin of another termination operational amplifier U9B being connected with R48；Operational amplifier
7th pin of U9B is connected to the 19th pin of microcontroller U3 in Fig. 3, before measuring passenger vehicle by the ADC change-over circuit within U3
The load of wheel shaft.
Condenser type load signal sensor C31, C41 have identical structure.Refer to Figure 14, condenser type load signal passes
Sensor comprises top crown unit (102) and the bottom crown unit (103) of band barricade.After C31 bottom crown unit (103) is arranged on
Top in the middle part of wheel shaft, C31 top crown unit (102) is arranged on frame downward, parallel relative with C31 bottom crown unit (103)
And align up and down, the barricade lead-out wire of C31 is connected to the ground near U8 the 10th pin of Figure 12；C41 bottom crown unit is installed
Above in the middle part of front axle, C41 top crown unit is arranged on frame downward, parallel relative with C41 bottom crown unit and upper and lower
Aligning, the barricade lead-out wire of C41 is connected to the ground near U10 the 10th pin of Figure 13.So, passenger vehicle is in different load
Under, leaf spring produces different deformation, the top crown unit (102) of band differential capacitive load signal sensor and bottom crown list
Distance between unit (103) changes, so that capacitance changes, then will by capacitance sensor conditioning integrated circuit
The change of capacitance is converted into the change of magnitude of voltage, can measure this magnitude of voltage by the adc circuit of microcontroller, through journey
Sequence obtains quality of loads after calculating, then the quality of loads of wheel shaft before and after measured is added, and is i.e. the full payload of passenger vehicle.
In the circuit theory diagrams of Fig. 2～Figure 13, identical electrical network numbering or port are electrical communication.
Owing to passenger vehicle is under the kinestate of acceleration or deceleration, the load data of measurement is untrue, therefore, at microcontroller
After reading the data of acceleration transducer, by calculating and analyzing, only when passenger vehicle resting state or linear uniform motion, just inspection
Surveying and preserve the data of integrated car load, the integrated car load at this moment measured is only authentic and valid.
" detection of road transport fuel consumption in vehicles amount and the administration Regulations for Supervision " that play execution on November 1st, 2009 requires total
The quality road passenger transport vehicle more than 3500 kilograms is it suffices that traffic industry standard " operating passenger car Fuel Consumption limit value
And measuring method ", and regulation test roads should be straight road, with Colophonium or concrete pavement, length is not less than 2 kilometers,
Width be not less than 8 meters, head fall within 0.1%, and road surface should clean, smooth.
In order to obtain and the comparison of integrated fuel indication of consumption, need the number of the conformance with standard test condition filtered out
According to.Method is: gather and calculate under passenger vehicle full load condition on smooth road surface difference speed section when uniform rectilinear travels
Running time and Fuel Consumption, and calculate the integrated fuel consumption of every 100km, i.e. effective specific fuel consumption, preserve phase
The data closed.
Microcontroller is by gathering GES and the data of 3-axis acceleration signal, by calculating and analyzing, it may be determined that
Whether passenger vehicle remains static, linear uniform motion state.
Microcontroller, by reading the data of 3-axis acceleration signal, can calculate relevant inclination angle, by calculating and combining
Close and analyze, it may be determined that whether passenger vehicle is on smooth road.
Refer to Figure 15, the workflow of micro controller main program comprises the steps:
Step S201, power on after, enter initialize；
After step S202, program complete to initialize, by I2C bus and acceleration detecting unit communication, read 3-axis acceleration
Data；
Step S203, the inclination angle of calculating passenger vehicle；
Step S204, storage acceleration and inclination data；
Step S205, read the data such as the speed of passenger vehicle and fuel consumption by CAN interface unit；
Step S206, call detection with calculate integrated car load subprogram；
Step S207, call effective specific fuel consumption analytical calculation subprogram；
Whether step S208, inspection USART3 serial ports receive the communications command of PC；Enter step S209 to judge, if the life of not receiving
Make frame, then enter step S211；If receiving command frame, then enter step S210 and process command frame data, subsequently into step
S211；
Whether step S211, inspection USART1 serial ports receive the communications command of GPRS wireless communication module；Enter step S212 to sentence
Disconnected, if not receiving command frame, then enter step S214；If receiving command frame, then enter step S213 and process command frame data, and
Data are sent to data processing centre, subsequently into step S214 by GPRS；
Step S214, need video data to OLED module output, the number that passenger car energy consumption that display intelligent cell collects is relevant
According to this and the data of conformance with standard test condition that filter out；
Then, program is again introduced into step S202, repeats step S202～S214, goes round and begins again, circular flow.
Refer to Figure 16, detect and comprise the steps: with the workflow calculating integrated car load subprogram
The 3-axis acceleration data that step S301, analysis are read from acceleration detecting unit；
Step S302, the acceleration judging the passenger vehicle longitudinal axis and transverse axis are the most all 0, if it is not, explanation is now not suitable for detection
The load of passenger vehicle, subprogram returns；If being all 0, illustrating that passenger vehicle remains static or uniform rectilinear's transport condition, entering
Step S303 and step S304, start to detect integrated car load:
Step S303, by the 1st of microcontroller the 12 analog-digital converters, detect front axle load；
Step S304, by the 2nd of microcontroller the 12 analog-digital converters, detect hind axle load；
Step S305, front axle load and hind axle load are added, i.e. obtain integrated car load；
Step S306, the address planned in the data store storage integrated car load data；Program returns.
Refer to Figure 17, the workflow of effective specific fuel consumption analytical calculation subprogram comprises the steps:
Step S401, taking-up integrated car load data；
Step S402, judge whether passenger vehicle is fully loaded, if not fully loaded, the load being now not suitable for detecting passenger vehicle be described, sub
Program returns；If fully loaded, then enter step S403, determine whether the kinestate of passenger vehicle:
Step S403, take out institute's passenger vehicle acceleration of gathering and calculating and an inclination data；
Step S404, judge that the passenger vehicle longitudinal axis and the acceleration of transverse axis, inclination angle are the most all 0, if it is not, illustrate that now passenger vehicle is also
Non-being on smooth road, test condition against regulation, subprogram returns；If being all 0, enter step S405,
Determine that passenger vehicle is just remaining static or uniform rectilinear's transport condition on smooth road；
Step S406, taking-up passenger vehicle vehicle speed data, enter step S407, determine passenger vehicle just uniform rectilinear's row on smooth road
Sail；
Step S408, judge that speed is whether in a certain scope of regulation:
If all velocity intervals that speed specifies beyond " operating passenger car Fuel Consumption limit value and measuring method ", do not calculate
Fuel consumption under this speed, subprogram returns；Otherwise, illustrate that speed, in the velocity interval of regulation, enters step S409；
Step S409, the fuel consumption being calculated and stored under current vehicle speed；
Step S410, the fuel consumption read from data storage cell under other speed, calculating and store can be with comprehensive combustion
The passenger vehicle effective specific fuel consumption that material indication of consumption is compared；Subprogram returns.
The operation principle of the present embodiment can be described as follows: the load of microcontroller detection passenger vehicle and the acceleration letter of three axles
Number, the acceleration information of three axles calculate the inclination angle of three axles, then read the speed of passenger vehicle, the combustion of consumption by CAN interface unit
The data collected are analyzed by the algorithm of software design and process, filtering out simultaneously by the data such as oil mass, fuel consumption
Conformance with standard load and the test data of each speed section, calculate effective specific fuel consumption, by display unit show be correlated with number
According to, wireless communication module relevant data are transferred to data processing centre by network, through the monitoring of data processing centre
After software processes, display in real time is about the energy consumption data of passenger vehicle, and provides the inquiry of historical data, automatically generates daily sheet, monthly magazine
Table, the function of year form, by the comparison to energy consumption monitoring data Yu Fuel Consumption limit value index, provide passenger car energy consumption and exceed standard
Warning information.Thus can realize full automatic passenger car energy consumption data analysis, process, assess, can promote passenger car energy consumption statistics with
The quality of data of monitoring, improves work efficiency and the accuracy of data, can be that high energy consumption high pollution vehicle is implemented by administration section
Force to eliminate or scrap offer data support, it is possible to for Passenger Transport Enterprises as internal evaluation, the important evidence of decision-making.
Claims (11)
1. use the passenger car energy consumption data acquisition unit of CAN, it is characterised in that including: power supply voltage regulation unit (1), intelligence
Unit (2), system reset unit (3), data storage cell (4), debugging interface (5), display unit (6), acceleration detection list
Unit (7), CAN interface unit (8), communication interface level conversion unit (9), integrated car load signal element (10), radio communication mold
Block (11), PC RS-232 interface (12)；Wherein:
Power supply voltage regulation unit (1) be intelligent cell (2), system reset unit (3), data storage cell (4), debugging interface (5),
Display unit (6), acceleration detecting unit (7), CAN interface unit (8), communication interface level conversion unit (9), integrated car load
Signal element (10), wireless communication module (11) are powered, and constitute electrical connection with each several part；
Intelligent cell (2) is the core of this device, runs under program control, with power supply voltage regulation unit (1), system reset list
Unit (3), data storage cell (4), debugging interface (5), display unit (6), acceleration detecting unit (7), CAN interface unit
(8), communication interface level conversion unit (9), integrated car load signal element (10) constitute electrical connection；
System reset unit (3) is used for intelligent cell electrification reset, constitutes electrical connection with intelligent cell (2)；
Data storage cell (4) is for storing the data of the conformance with standard test condition that intelligent cell filters out and not being sent to
The data of data processing centre, constitute electrical connection with intelligent cell (2)；
Debugging interface (5) is for intelligent cell artificial debugging and downloads, and constitutes electrical connection with intelligent cell (2)；
Display unit (6) is used for showing the data that the passenger car energy consumption that intelligent cell collects is correlated with and the conformance with standard filtered out
The data of test condition, constitute electrical connection with intelligent cell (2)；
Acceleration detecting unit (7), for detecting acceleration when passenger vehicle runs, constitutes electrical connection with intelligent cell (2)；
CAN interface unit (8), for the adaptive engine diagnostic interface transceiving data with passenger vehicle, constitutes electricity with intelligent cell (2)
Gas connects；
Communication interface level conversion unit (9) is for the level signal of adaptive intelligent cell with the communication equipment being connected, with intelligence
Energy unit (2), wireless communication module (11) and PC RS-232 interface (12) composition are electrically connected；
Integrated car load signal element (10), for detecting the load of vehicle, constitutes electrical connection with intelligent cell (2)；
Wireless communication module (11) is used for connecting wireless network and communicating with data processing centre, with communication interface level conversion list
Unit (9) constitutes electrical connection；
PC RS-232 interface (12), for configuring the basic parameter of passenger vehicle, constitutes electricity with communication interface level conversion unit (9)
Gas connects；
Further, the data that passenger car energy consumption is relevant include speed, fuel consumption, fuel consumption, passenger vehicle 3-axis acceleration
And inclination angle, load.
The passenger car energy consumption data acquisition unit of employing CAN the most according to claim 1, it is characterised in that described
Intelligent cell includes the microcontroller that model is STM32F103C8T6.
The passenger car energy consumption data acquisition unit of employing CAN the most according to claim 1, it is characterised in that described
CAN interface unit includes the CAN transceiver that model is SN65HVD230DR.
The passenger car energy consumption data acquisition unit of employing CAN the most according to claim 1, it is characterised in that described
Data processing centre includes database server, runs the computer of passenger car energy consumption monitoring of software, display and printer.
The passenger car energy consumption data acquisition unit of employing CAN the most according to claim 1, it is characterised in that described
Acceleration detecting unit includes 3-axis acceleration sensor.
The passenger car energy consumption data acquisition unit of employing CAN the most according to claim 1, it is characterised in that described
CAN interface unit includes CAN transceiver U6 and electric capacity C20, resistance R10, R11, the jumper wire device that model is SN65HVD230DR
JP1, socket CZ4；R11 is terminating resistor, and resistance is 120 ohm, can access in circuit with jumper wire device JP1 as required；U5's
1st pin is connected to the 33rd pin of microcontroller U3, the 2nd pin ground connection of U5, and the 3rd pin of U5 connects 3.3V power supply, U5's
4th pin is connected to the 32nd pin of microcontroller U3；The 6th of U5,7 pins are connected respectively to the 2nd and the 1st of socket CZ4 and draw
Foot, the 8th pin of U5 passes through resistance R10 ground connection；Resistance R11 and jumper wire device JP1 connect be followed by socket CZ4 the 1st, 2 pins
Between, the 3rd pin ground connection of CZ4；Electric capacity C20 is connected between the 3rd pin and the ground of U6.
The passenger car energy consumption data acquisition unit of employing CAN the most according to claim 1, it is characterised in that described
Integrated car load signal element includes passenger vehicle front axle load signal unit and passenger vehicle hind axle load signal unit；Passenger vehicle front axle
Load signal unit and passenger vehicle hind axle load signal unit have identical structure；
Passenger vehicle hind axle load signal unit includes that integrated circuit nursed one's health by condenser type load signal sensor C31, capacitance sensor
U8, the operational amplifier U9A for differential signal conversion, electric capacity C32～C38, resistance R31～R39 composition；
The 14th pin that model is CAV424, U8 of capacitance sensor conditioning integrated circuit U8 and the indirect condenser type load letter on ground
Number sensor C31, the 16th of U8 the, 12,15, connect the 10th pin ground connection of electric capacity C32～C35, U8 between 13 pins and ground respectively；
Between 3rd pin of the 2nd pin of U8 and the indirect resistance R31, U8 on ground and the 1st pin and the ground of the indirect resistance R32, U8 on ground
11st pin of connecting resistance R33, U8 connects+5V power supply, is meeting electric capacity C36 to ground at this pin；The 4th of U8,5 pins are indirect
The 4th of resistance R34, U8, the indirect resistance R35 of 6 pins；6th pin of the 6th pin of U8 indirect electric capacity C37, U8 over the ground
Outside is further connected with resistance R36 and R37 of series connection；One end ground connection of R37, another termination operational amplifier U9A's being connected with R36
3rd pin；Be further connected with outside 5th pin of U8 series connection resistance R38 and R39, R39 one termination operational amplifier U9A the 1st
Pin, the 2nd pin of another termination operational amplifier U9A being connected with R38；1st pin of operational amplifier U9A is connected to micro-
18th pin of controller U3, measures the load of passenger vehicle hind axle by the ADC change-over circuit within U3；Operational amplifier U9A
The 4th pin ground connection, the 8th pin connects 5V power supply, in close proximity to the 8th pin and the indirect electric capacity C38 of the 4th pin.
The passenger car energy consumption data acquisition unit of employing CAN the most according to claim 1, it is characterised in that described
Condenser type load signal sensor C31, C41 of integrated car load signal element have identical structure；
Condenser type load signal sensor comprises top crown unit (102) and the bottom crown unit (103) of band barricade；
C31 bottom crown unit (103) is arranged on the top in the middle part of hind axle, and C31 top crown unit (102) is arranged under vehicle frame
Portion, parallel relative with C31 bottom crown unit (103) and align up and down, it is attached that the barricade lead-out wire of C31 is connected to U8 the 10th pin
Near ground；
C41 bottom crown unit is arranged on the top in the middle part of front axle, and C41 top crown unit is arranged on frame downward, with pole under C41
Slab element is parallel to be aligned relatively and up and down, and the barricade lead-out wire of C41 is connected to the ground near U10 the 10th pin.
9. using the control method of the passenger car energy consumption data acquisition unit of employing CAN according to claim 1, it is special
Levy and be, comprise the steps:
Step S201, initialization；
Step S202, by I2C bus and acceleration detecting unit communication, read 3-axis acceleration data；
Step S203, the inclination angle of calculating passenger vehicle；
Step S204, storage acceleration and inclination data；
The data such as step S205, the speed reading passenger vehicle and fuel consumption；
Step S206, call detection with calculate integrated car load subprogram；
Step S207, call effective specific fuel consumption analytical calculation subprogram；
Step S208, check whether the communications command receiving PC；Entering step S209 to judge, if not receiving command frame, then entering
Enter step S211；If receiving command frame, then enter step S210 and process command frame data, subsequently into step S211；
Step S211, check whether the communications command receiving GPRS wireless communication module；Enter step S212 to judge, if not receiving
Command frame, then enter step S214；If receiving command frame, then enter step S213 process command frame data, and by GPRS to
Data processing centre sends data, subsequently into step S214；
Step S214, need video data to OLED module output, the number that passenger car energy consumption that display intelligent cell collects is relevant
According to this and the data of conformance with standard test condition that filter out；
Program is again introduced into step S202, repeats step S202～S214, goes round and begins again, circular flow.
10. use control method according to claim 9, it is characterised in that described detection and calculating integrated car load, bag
Include following steps:
The 3-axis acceleration data that step S301, analysis are read from acceleration detecting unit；
Step S302, the acceleration judging the passenger vehicle longitudinal axis and transverse axis are the most all 0, if it is not, explanation is now not suitable for detection
The load of passenger vehicle；If being all 0, then entering step S303 and step S304, starting to detect integrated car load:
Step S303, detection front axle load；
Step S304, detection hind axle load；
Step S305, front axle load and hind axle load are added, i.e. obtain integrated car load；
Step S306, storage integrated car load data.
11. use control method according to claim 9, it is characterised in that described effective specific fuel consumption analysis meter
Calculate, comprise the steps:
Step S401, taking-up integrated car load data；
Step S402, judge whether passenger vehicle is fully loaded, if not fully loaded, illustrate to be now not suitable for the load of detection passenger vehicle；As
Fruit is fully loaded, then enter step S403；
Step S403, take out institute's passenger vehicle acceleration of gathering and calculating and an inclination data；
Step S404, judge that the passenger vehicle longitudinal axis and the acceleration of transverse axis, inclination angle are the most all 0, if it is not, subprogram returns；As
Fruit is to be all 0, enters step S405, determines that passenger vehicle is just remaining static on smooth road or uniform rectilinear travels shape
State；
Step S406, taking-up passenger vehicle vehicle speed data, enter step S407, determine passenger vehicle just uniform rectilinear's row on smooth road
Sail；
Step S408, judge that speed is whether in a certain scope of regulation:
If speed is beyond all velocity intervals of regulation, the most do not calculate the fuel consumption under this speed；Otherwise, step is entered
S409；
Step S409, the fuel consumption being calculated and stored under current vehicle speed；
Step S410, the fuel consumption read from data storage cell under other speed, calculate and store passenger vehicle and effectively fire
Specific oil consumption.
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