WO2002097377A1

WO2002097377A1 - Method and apparatus for instantaneous indication of running efficiency of traffic conveyance

Info

Publication number: WO2002097377A1
Application number: PCT/CN2002/000358
Authority: WO
Inventors: Jun Zheng
Original assignee: Jun Zheng
Priority date: 2001-05-28
Filing date: 2002-05-28
Publication date: 2002-12-05

Abstract

The present invention provides a method of and an apparatus for instantaneous indication of running efficiency of traffic conveyance, its principle is: Sampling the running distance and the energy consumption of the conveyance instantaneously by the running distance sensor and the energy consumption sensor; Computing the instantaneous running efficiency; Displaying it by the analog and/or digital indication element, as a reference, it is provided for the driver'steering; Or controlling the automatic navigation device drives in an energy saving mode. When applying in vehicles with electronic controlled fuel spray, the energy consumption sensor directly gets the quantity of fuel consumption from ECU; Or computing the quantity of the fuel consumption indirectly through measuring the electrify time of the electromagnetism coil of the fuel sprayer controlled by the ECU. When applying in electric vehicles, the energy consumption sensor is realized by electricity consumption transducer. The present invention can be wildly used in various vehicles, such as mobiles, electric bicycles, trains, underground cars, steamships, submarines and planes. It is helpful for the drivers to promote the running efficiency.

Description

Method and device for real-time indication of driving efficiency of transportation tools

TECHNICAL FIELD-The present invention relates to an indicating device for transportation vehicles, and in particular, it can be widely applied to various transportation vehicles such as various motor vehicles, electric bicycles, trains, subway trains, ships, submarines, and airplanes. A device that indicates the driving efficiency of a vehicle in real time. Background technique:

The transportation vehicle is for the purpose of movement, and at the cost of energy consumption. The distance traveled by unit energy consumption is the driving efficiency of the transportation vehicle (or expressed by the energy consumption per unit distance). Usually, the economic speed indicator is included in the instructions of transportation vehicles, which indicates the fuel consumption of 100 kilometers at economic speed, which is used to guide the driver. However, economic speed is an indicator in a specific situation. There are individual differences in the same type of transportation means. In the same transportation means, the conditions of transportation means such as tire pressure, engine condition, engine output reduction ratio, Many factors such as the quality of the label of the energy used, the weight of the load, the driving environment, etc. affect the most energy-efficient speed, and experienced drivers cannot accurately grasp it. The dashboards of existing transportation vehicles are usually equipped with driving devices such as speedometers, fuel gauges, and odometers, but drivers cannot accurately control the transportation vehicles to operate at the highest efficiency based on these instructions. The fuel gauge and driving odometer can only be used to calculate a fairly long driving distance and average driving efficiency over a long period of time, which has no practical significance for guiding drivers to conduct energy-saving driving.

An object of the present invention is to provide a method and a device capable of indicating the driving efficiency of a transportation vehicle in real time, which are used to instruct a driver or control an automatic cruise device to control the transportation vehicle to operate at the highest efficiency when needed to save energy Consume and reduce environmental pollution. Summary of the invention:

In order to achieve the above object, the present invention provides a method for real-time indication of driving efficiency of a transportation vehicle, including the following steps: real-time transportation distance signal S of the transportation vehicle is collected by a driving distance sensor, and real-time energy consumption is collected by an energy consumption sensor. A signal E; transmitting the distance signal S and the energy consumption signal E to a computing unit; the computing unit according to the above The signal calculates a real-time driving efficiency signal n represented by the distance traveled per unit energy consumption or the energy consumed per unit distance, where η-s / E or n = E / S; transmitting the above-mentioned real-time driving efficiency signal n to the display component; The display unit displays the running efficiency signal n of the transportation means in real time.

In addition, the present invention also provides a device using a real-time indication method of driving efficiency of a transportation vehicle, including a driving distance sensor, an energy consumption sensor, a computing component, a display component, and a power supply component. The driving distance sensor and the energy consumption sensor have corresponding interfaces. The circuit is connected to a computing component for obtaining a real-time transportation distance signal S and a real-time energy consumption signal E. The computing component calculates the real-time driving represented by the distance traveled per unit energy consumption or the energy consumed per unit distance according to the above signals. Efficiency signal η, where ri = S / E or n = E / S; the computing unit is connected to the display unit with a corresponding interface circuit, and is used to transmit the real-time running efficiency signal η to the display unit and display the traffic in real time by the display unit The driving efficiency signal η of the tool; the input end of the power supply component is connected to the power supply provided by the transportation vehicle, and the output end of the power supply component is connected to a driving distance sensor, an energy consumption sensor, a computing component and a display component as required.

The device of the present invention can instruct a driver or an automatic cruise device to perform energy-saving driving in real time, can obviously reduce energy consumption, reduce environmental pollution, and enhance the driver's energy-saving consciousness, thereby generating significant economic and social benefits. The device of the invention has low cost, simple process, does not affect the safety and service life of transportation tools, and has high practical value and promotion value.

From January to March 2001, the Fengshen Cup "One Liter Oil" Extreme Challenge was held. The champions of the eight sub-regions traveled a total of 94.15 kilometers, and the sixth place (one of them exited the sixth place and took the fifth place) accumulated a total of 80.15 kilometers. 17.5%; The average fuel consumption of the champion group is 8 / 94.15 = 0.085 liters / km, and the average fuel consumption of the sixth group is 8 / 80.15 = 0.0998 liters / km, which is 0.0148 liters more per kilometer than the championship group.

Under the instruction of the device of the present invention, an ordinary driver can control the vehicle to achieve a more ideal driving efficiency, and obtain a result equivalent to the championship group. Without the instructions of the device of the present invention, ordinary drivers may not reach the sixth group, because the sixth group is also an experienced energy-saving driver. Therefore, according to the instructions of the device of the present invention, the driving energy saving effect is expected to be about 20%.

If a car travels 25,000 kilometers a year, using 93 # unleaded gasoline costs about 2.98 yuan per liter, which can save 25,000 kilometers per year X 0.0148 liters / km X 2.98 yuan / liter = 1103 yuan, if this car is used 10 years can save more than 10,000 yuan. For commercial taxis, use 90 # unleaded steam The fuel is about 2.75 yuan per liter, and 500 kilometers per day can save 500 kilometers per day X 350 days X 0.0148 liters per kilometer X 2.75 yuan per liter = 7123 yuan per year.

Fuzhou has more than 300,000 motor vehicles. Based on an average of 30,000 kilometers per vehicle per year, it saves 300,000 vehicles per year X 30,000 kilometers per vehicle X 0.0148 liters per kilometer = 133.2 million liters. 2.8 yuan per liter of oil Annual savings of 373 million yuan in fuel costs. If promoted in various transportation means nationwide and worldwide, the annual fuel cost savings will be an astronomical figure. In today's increasingly energy-intensive, energy-saving and environmentally-friendly environment, the promotion and application of the device of the present invention will produce huge economic and social benefits. Brief description of the drawings:

The present invention will be described in detail below with reference to the drawings, in which

Fig. 1 is a schematic diagram of the apparatus of the present invention.

FIG. 2 is a schematic diagram of the first embodiment.

FIG. 3 is a schematic diagram of the second embodiment.

FIG. 4 is a schematic diagram of the third embodiment.

FIG. 5 is a schematic diagram of the fourth embodiment, and R in FIG. 5 is a sampling resistor of the current sensor.

FIG. 6 is a schematic diagram of the fifth embodiment.

DETAILED DESCRIPTION-In the above drawings, the same or similar components are denoted by the same reference numerals. As shown in FIG. 1 above, the device of the present invention is composed of a driving distance sensor 1, an energy consumption sensor 2, a computing component 3, a display component 4, and a power supply component 5. The implementation of the present invention is to collect the real-time travel distance S and energy consumption E of the transportation means to the computing unit 3 through the driving distance sensor 1 and the energy consumption sensor 2; and the computing unit 3 is based on n = S / E or n = The E / S calculates the real-time driving efficiency 11 in terms of the distance traveled per unit energy consumption or the energy consumed per unit distance and sends it to the display unit 4; the analog and / or digital display unit 4 indicates the driving efficiency of the transportation means in real time, and indicates driving Crew or control the automatic cruise to drive in the most energy efficient way.

The display refresh cycle can be performed in terms of unit energy consumption, unit driving distance or unit time. The accuracy and real-time performance of the instruction depends on the accuracy, real-time performance, and minimum unit of measurement of the travel distance sensor 1, the energy consumption sensor 2, the computing unit 3, and the display unit 4. Real-time is relatively speaking, for example: The dashboard of an existing car is equipped with a fuel gauge and a driving odometer. It traveled 300 kilometers from Fuzhou to Xiamen. According to the fuel gauge instructions, it was known that about 30 liters of gasoline were consumed. It is calculated that the driving efficiency is about 10 liters / 100 kilometers. This is a fairly long driving distance and an average driving efficiency over a long period of time, which has no practical significance for guiding drivers to perform energy-saving driving. The real-time indication in this patent application refers to a relatively short time for the driver, for example: within 0.1 second to 1 minute, the corresponding real-time parameter is indicated. The driver immediately adjusts the driving operation according to these parameters to achieve the purpose of energy-saving driving. The specific real-time time is suitable to be set according to the needs of commercialization.

The indication unit of the driving efficiency of the transportation means can be 100 kilometers of fuel consumption X liters (L / 100Km) or X kilometers per kilometer of fuel (Km / L) and its conversion unit, or 100 kilometers of power consumption X kWh (KWh / lOOKm) or X kilometers per kilowatt-hour (Km / KWh) and its conversion unit. The energy consumption unit can be expressed in kilograms (Kg) in addition to liters (L).

As mentioned earlier, driving efficiency is expressed by the distance traveled per unit energy consumption or the energy consumed per unit distance. The distance traveled per unit energy consumption is more in line with the meaning of efficiency. The larger the value, the higher the efficiency. The energy consumed per unit distance is the smaller the value, the higher the efficiency, such as: 100 kilometers of fuel consumption X liters, which is more in line with the current public habits. However, when the engine is running and the vehicle is stopped, the driving distance in real time is 0, and a state of division by 0 occurs. When calculating the driving efficiency, the arithmetic unit 3 should perform appropriate processing.

Due to the variety of practical applications, it cannot be exhausted. The following examples are given to illustrate the components of the present invention:

Travel distance sensor 1 In land transportation vehicles, various sensors such as Hall, photoelectric, electromagnetic or switch can be used. It is installed on the transmission, transmission shaft, wheel hub, speedometer soft shaft transmission output end of the transportation vehicle or Other suitable locations that are proportional to the distance traveled. Water, air, or air transportation vehicles can use water or air flow through the distance sensor. And the collected real-time signal of the driving distance is sent to the computing unit 3, so that it can obtain the real-time information of the driving distance of the transportation means.

The selection of the energy consumption sensor 2 is based on the energy used by the transportation means. Passive or active liquid flow sensors for fuel use; Passive liquid flow sensors are installed in the proper position on the fuel tank to the engine; Active liquid flow sensors are obtained directly from the ECU (electronic control unit or engine control unit for transportation vehicles) Fuel consumption, or pass Detecting the energizing time of one or more fuel injector solenoid coils controlled by the ECU to indirectly obtain fuel consumption. The gas flow sensor for gas is installed at a proper position on the gas path from the gas storage to the engine. Voltage and current sensors that use electricity can be installed at the appropriate position from the power source to the motor, the voltage and current output by the power source are measured, and the energy consumed is calculated by the arithmetic unit 3. No matter which kind of energy consumption sensor is used, its sampling value must be proportional to the energy consumption, and the sampling value is sent to the arithmetic unit 3.

The computing unit 3 calculates the driving efficiency based on the real-time signal of the driving distance S sent by the driving distance sensor 1 and the real-time signal of the energy consumption E sent by the energy consumption sensor 2, and n = S / E or n = E / S, and The running efficiency is indicated by the display means 4. The computing unit 3 includes corresponding level conversion and other interface circuits connected to the driving distance sensor 1, the energy consumption sensor 2 and the display unit 4; if necessary, the A / D and D / A circuits are used for the driving distance sensor 1 and the energy consumption sensor 2 The input signal and the signal output to the display section 4 are analog-to-digital and digital-to-analog conversion. The operation function in the operation section 3 is implemented by an operational amplifier circuit, a single-chip computer (computer) circuit, or a combination circuit thereof. The timer in the single-chip microcomputer (computer) is used as a time sensor to obtain a sample of time for time-related calculations. The computing unit 3 may be installed on a dashboard of a transportation vehicle or other suitable locations.

The display unit 4 uses the analog and / or digital calculation results output by the operation unit 3, and uses active or passive components such as LCDs, LEDs, CRTs, fluorescent tubes, or pointer indicators, or combinations thereof, in an analog and / or digital manner. display. The display unit 4 is installed on a dashboard of a transportation vehicle or other positions convenient for a driver to observe.

The input terminal of the power supply unit 5 is connected to the power supply provided by the transportation means, and it provides input power. After the voltage is stabilized by a linear or switching regulated power supply, the output end of the power supply part 5 is connected to the driving distance sensor 1, the energy consumption sensor 2, the computing part 3, and the display part 4 as required, and provides them with a power source with a corresponding voltage.

Five specific embodiments are listed below to further illustrate the present invention. The first embodiment is a solution for retrofitting an existing EFI vehicle, and the second and third embodiments are solutions for an improved new type of EFI vehicle. The fourth embodiment is an example applied to an electric vehicle. The fifth embodiment is an example applied to a premium car with an automatic cruise device. The first embodiment to the third embodiment are all applied to automobiles equipped with an electronically controlled fuel injection (hereinafter referred to as EFI) device. Therefore, the common energy consumption detection principle, characteristics and effects thereof are introduced first: For the introduction of EFI device, please refer to Chapter 10 "Electronically Controlled Gasoline Injection" of "Carburetor and Electronically Controlled Gasoline Injection System" published by People's Communications Press and "Santana 2000 Car Structure" published by Machinery Industry Press Chapter 5 "EFI System". Please refer to pages 295 to 298 and 87 of the two books for a description of the fuel injector. According to the injection point, the electric injection device is divided into independent injection and multi-point injection. For the formula q-QC ^ -TJ ^ O mentioned below, please refer to page 296 of "Carburetor and Electronically Controlled Gasoline Injection System". Among them, q is the dynamic injection amount, Q is the static injection amount, D is the energizing time of the solenoid of the fuel injector, and T _v is the inactive time,! ; A constant for a specific fuel injector.

The previous examples show that fuel-powered transportation vehicles can use passive liquid flow sensors as energy consumption sensors. The flowmeters disclosed in Chinese patents 8710820 91231215.7 and 93239148.6 can be used as passive energy consumption sensors. However, in the practical applications of the first to third embodiments, there are problems such as poor real-time performance, low resolution, complex structure, and high cost. . In these three embodiments, the use of an active liquid flow sensor fundamentally solves these problems with conventional passive flow meters.

The energy consumption sensor 2 is implemented as follows: According to the working principle of the electric injection device, it can be known that the fuel injection quantity is determined by the stroke of the fuel injector needle valve, the area of the nozzle, and the pressure difference between the fuel pressure and the pressure at the nozzle outlet. After these parameters are determined, the static injection amount Q is a constant, and the dynamic injection amount q is determined by the energization time T of the solenoid of the fuel injector controlled by the ECU, that is, q = Q (Ti_T _v ) / 60. Therefore, the fuel injector is essentially a fuel dosing device controlled by the ECU. The ECU collects the working conditions of the engine according to various sensors on the engine, and controls the fuel injection amount. Therefore, the arithmetic unit 3 can directly obtain the fuel consumption amount directly through the ECU or by detecting the energization time of one or more fuel injector solenoid coils controlled by the ECU, instead of passively detecting the fuel consumption amount through the flow meter. Using this method to detect fuel consumption can achieve ideal real-time performance, high resolution and accuracy, and has a simple structure, high reliability, and low cost.

If high-precision, quantitative indication of driving efficiency is required, it may be necessary to improve the measurement accuracy of fuel consumption. The temperature of the fuel before the nozzle can be detected by a temperature sensor. The detected volume ejection amount is temperature compensated according to the measured temperature, and converted into a volume or mass ejection amount at a standard temperature for convenient quantitative indication. A pressure sensor can also be used to detect the pressure difference between the fuel pressure and the pressure at the nozzle outlet to compensate for the detected injection amount. Due to the discreteness of the EFI system Calibration, if necessary. If it is a quantitative instruction with low accuracy requirements or as long as the driving efficiency is qualitatively indicated, these compensations and calibrations are unnecessary.

In these three embodiments, the cost of several hundred yuan is saved because the conventional passive flow meter is not used, and the cost of the original components and materials of each set of equipment is only tens of yuan. In addition, it has good real-time performance, high resolution and accuracy, simple structure and production process, and high reliability, and is easy to implement on EFI transportation vehicles. In 2000, the world's car sales reached more than 50 million, and China's car sales reached more than 600,000. EFI vehicles have a high proportion, and the proportion is still increasing year by year due to environmental protection and emission standards. Therefore, these three embodiments have high practical value and promotion value.

First embodiment: An embodiment of the device of the present invention is added to the original EFI sedan Santana 2000 GLI. This solution is applicable to the modification of an existing vehicle. FIG. 2 is a schematic diagram of this embodiment.

Driving distance sensor 1: The driving distance sensor 1 is already installed in this car. When the car is driving, the magnetic steel in the transmission is driven to make a circular motion, and the number of pulses proportional to the driving distance is generated by the Hall speed sensor. This signal is sent to the driving distance sensor interface circuit of the computing unit 3 to realize real-time detection of the driving distance.

Energy consumption sensor 2: Detect the electromagnetic coil of one or more fuel injectors controlled by the ECU through the corresponding interface circuit, obtain the corresponding energization time η and send it to the computing unit 3; computing unit ③ according to the formula q QC ^ -TvySO or according to the experiment The 对照 Π and fuel consumption comparison table established calculates the real-time fuel consumption, that is, energy consumption. The Santa Fe 2000 GLI's AFE launch has four fuel injectors in an electrically controlled gasoline injection system. From the wire sockets of the four fuel injectors or the corresponding pins of the ECU socket, 4 pairs of wires are led out and connected to the interface circuit 1 ~ interface circuit 4 composed of 4 sets of level conversion and shaping circuits of the energy consumption sensor 2. .

Computational component 3: It consists of 80C196KB single chip microcomputer, single chip peripheral circuit and corresponding interface circuit. The interface circuit composed of the signal sent by the driving distance sensor 1 is connected to the level conversion and shaping circuit of the arithmetic unit 3, and the output of the interface circuit is connected to the external interrupt pin (EXTINT) of the 80C196KB microcontroller. The number of pulses is recorded by interrupting the program to obtain the distance (S).

The 4 signals sent from the energy consumption sensor 2 are connected to the 4 pins (HSL0 ~ HIS.3) of the high-speed input device of the 80C196KB single chip microcomputer, and the pulse widths of the 4 signals are measured τ _Π Τ, ₄ is 4 The power-on time of the fuel injector solenoids. Calculate the real-time fuel consumption (E) according to the formula _q = Q (T> T _v ) / 60; or obtain the real-time fuel consumption according to the experimentally established η and fuel consumption comparison table. Fuel consumption (E).

The computing unit 3 calculates the driving efficiency η (unit: km / L) calculated by the 80C196KB single-chip microcomputer according to the formula n = S / E, and connects the display unit 4 through the 80C196KB single-chip microcomputer peripheral output interface circuit, that is, a 3-digit 8-segment LED digital tube. Control its display, or use the analog output pulse width modulator (PWM) of the 80C196KB single-chip microcomputer to convert it to an analog voltage through the integration circuit, and then connect it to the display unit 4, which is a 5V analog pointer voltmeter for instructions.

The display part 4 is indicated by a 3-digit 8-segment LED digital tube or a 5V analog pointer voltmeter or both. The indication of the analog display part 4 is a full range indication or a partial range indication. The starting scale of the partial range indication is not 0, and the partial range at a higher driving efficiency is enlarged. That is, the advantages of intuitive analog indication are retained, and the accuracy of the indication is improved.

The input end of the power supply unit 5 is connected to the battery of the vehicle. After the LM2575-5 switching regulator integrated circuit or the 7805 linear voltage regulator integrated circuit, the output end of the power supply unit 5 is connected to the energy consumption sensor 2 and the computing unit 3, and provides it for + 5V power supply. The driving distance sensor 1 has already been powered, and outputs active signals. No power supply unit 5 is required to provide power. The 3-digit, 8-segment LED digital tube and / or 5V analog pointer voltmeter used by the display unit 4 are passive components, which are directly driven by the display interface circuit of the operation unit 3, and the power supply unit 5 is not required to provide power.

Second embodiment: On the original electric injection-type car-Santana 2000 GLI, to install the device of the present invention, on the basis of the original ECU, a communication interface circuit is added and a program for outputting parameters related to the fuel injection quantity to this interface is added. In this way, four pairs of wires and four sets of interface circuits are saved compared with the first embodiment, the cost is reduced, and the processability is improved. This solution is applicable to an improved new car, and FIG. 3 is a schematic diagram of this embodiment.

Energy consumption sensor 2: By establishing a communication interface between the ECU and the computing unit 3, the computing unit 3 can read the calculation results of the ECU to directly obtain the real-time fuel consumption, or directly obtain one or more fuel injector solenoid coils The power-on time T _{i; the} calculation component ③ calculates the real-time fuel consumption, which is the energy consumption, according to the formula _ς = (Π-Τ _ν ) / 60 or according to the Ti and fuel consumption comparison table established by experiments. For other parts, please refer to the first embodiment, and details are not described herein again.

Embodiment 3: On the original EFI sedan-Santana 2000 GLI, in order to retrofit the device of the present invention, the original ECU of the car is improved so that the ECU includes the function of the computing unit 3. In this way, compared with the second embodiment, a single-chip computer system, a set of communication interface circuits and communication lines, and power are saved. The source component 5 further reduces the cost and improves the processability. This solution is applicable to an improved new car, and FIG. 4 is a schematic diagram of this embodiment.

Energy consumption sensor 2: Essentially a program in the ECU's computing unit 3, from which the program reads the calculation results of the ECU and directly obtains the real-time fuel consumption, or directly obtains the energization of one or more fuel injector solenoid coils Time T _1; arithmetic unit ③ according to formula

Or calculate the real-time fuel consumption, which is the energy consumption E, according to the Ti and fuel consumption comparison table established by the experiment. For other parts, please refer to the first embodiment, and details are not described herein again.

Embodiment 4: An embodiment of installing the device of the present invention on a DC electric vehicle. FIG. 5 is a schematic diagram of this embodiment, and R in FIG. 5 is a sampling resistance of a current sensor.

On electric vehicles, the power supply voltage U, the power supply current I and the time t are measured by the AC or DC voltage sensor, the AC or DC current sensor and the time sensor of the energy consumption sensor 2; or by its electric power sensor and time sensor , Measured electrical power P and time t; or it is a power consumption sensor, measured electrical power W; the energy consumption sensor 2 sends the measured signal to the arithmetic unit 3, and the arithmetic unit 3 according to E = W = UIt or E = W = Pt or E = W calculate the energy consumption £.

In this example, the energy consumption sensor 2 is composed of a DC voltage sensor, a DC current sensor, and a time sensor. The power supply voltage U, the power supply current I, and the time t are measured, and the energy consumption is calculated according to E = W = UIt.

The DC voltage sensor is composed of an interface circuit and a voltage A / D conversion circuit. The interface circuit divides the power supply voltage into the range of the A / D conversion circuit by two voltage-dividing resistors. It is connected to the ACH0 pin of the 80C196KB microcontroller. The B A / D converter's internal A / D conversion circuit performs detection, multiplies the measured voltage by the voltage dividing ratio of the two voltage dividing resistors, and calculates the power supply voltage U.

The DC current sensor is composed of an interface circuit and a current A / D conversion circuit. The interface circuit is implemented by an operational amplifier circuit. The voltage U _R on the sampling resistor R is linearly amplified to the range of the A / D conversion circuit. The ACH1 pin is detected by the internal A / D conversion circuit of the 80C196KB microcontroller, and the measured voltage is divided by the amplification factor of the operational amplifier circuit to obtain U _R. Then calculate the power supply current I according to the formula I = U _R / R. The time sensor is implemented by a timer in the 80C196KB microcontroller. For other parts, please refer to the first embodiment, and details are not described herein again.

Embodiment 5: An embodiment in which the device of the present invention is installed on a luxury car with an automatic cruise device. FIG. 6 is a schematic diagram of this embodiment. Some high-end cars have the function of automatic cruise. The driver can set the speed. As long as the steering wheel is controlled, without pressing the accelerator pedal, the car will run at the set speed. Press the brake pedal to release the automatic cruise. In this way, in addition to the driving efficiency calculated by the computing unit 3, in addition to being instructed by the display unit 4, the automatic cruise device can be controlled to drive in the most energy-saving manner through the communication interface circuit.

The auto-cruising device originally achieved automatic uniform speed by automatically adjusting the throttle and performing closed-loop control at the set vehicle speed. With the same principle, an automatic energy-saving driving control program and a communication interface circuit are added to the original automatic cruise device, so that it can also perform closed-loop control according to the maximum driving efficiency by automatically adjusting the throttle according to the real-time driving efficiency information sent by the computing unit 3. Transportation vehicles are automatically driven to save energy. For other parts, please refer to the first embodiment, and details are not described herein again.

Claims

1. A method for real-time indication of the driving efficiency of a transportation vehicle, comprising the following steps:-a real-time transportation vehicle distance signal S is collected by a driving distance sensor (1) and a real-time energy consumption is collected by an energy consumption sensor (2) Signal E;

First, the distance signal S and the energy consumption signal E are transmitted to the arithmetic unit (3);

A computing unit (3) calculates a real-time driving efficiency signal η represented by the distance traveled per unit energy consumption or the energy consumed per unit distance according to the above signal, where η -S / E or il = E / S _; The driving efficiency signal n is transmitted to the display unit (4);

First, the display unit (4) displays the driving efficiency signal η of the above-mentioned transportation means in real time.

2. The method for real-time indication of driving efficiency of a transportation vehicle according to claim 1, characterized in that: the step of collecting the real-time energy consumption signal E through the energy consumption sensor (2) comprises: the energy consumption sensor ( 2) detecting the electromagnetic coil of one or more fuel injectors controlled by the electronic control device ECU through the corresponding interface circuit, obtaining the corresponding energization time signal Ti and transmitting it to the computing unit (3); the computing unit (3) calculates the real-time Fuel consumption q, where q = Q (Ti-TV) / 60, where: Q is the static injection amount, T _v is the invalidation time, and τ _ν is a constant for a specific fuel injector; or established based on experiments Ή and the fuel consumption comparison table to obtain the real-time fuel consumption, the above-mentioned real-time fuel consumption is also the above-mentioned real-time energy consumption signal E.

3. The real-time indication method for driving efficiency of a transportation vehicle according to claim 1, characterized in that the step of collecting the real-time energy consumption signal E through the energy consumption sensor (2) comprises: the energy consumption sensor (2) By establishing a communication interface between the electronic control device ECU and the computing component (3), the computing component (3) can read the calculation result of the ECU, directly obtain the real-time fuel consumption, or directly obtain one or more The energization time T _{1 of the} solenoids of the fuel injectors _{; the} computing unit (3) calculates the real-time fuel consumption q, where q = Q (Ti-Tv) / 60, where: Q is the static injection amount and T _v is The dead time, τ _ν is a constant for a specific fuel injector; or the real-time fuel consumption is obtained according to the experimentally established fuel consumption and fuel consumption comparison table, and the above-mentioned real-time fuel consumption is also the above-mentioned real-time energy consumption signal £.

4. The real-time indication method for driving efficiency of a transportation vehicle according to claim 1, wherein The feature is that the energy consumption sensor (2) may be a program in the computing component (3) of the electronic control device ECU, and the program reads the calculation result of the ECU, and directly obtains the real-time fuel consumption, or directly obtains The energization time Ti of one or more fuel injector solenoid coils; the computing unit (3) calculates the real-time fuel consumption q, where q = Q (Ti-Tv) / 60, where: Q is the static injection amount, T _v is the invalid time, ^ is a constant for a specific fuel injector; or the real-time fuel consumption is obtained according to the experimentally established Ti and fuel consumption comparison table, and the above-mentioned real-time fuel consumption is also the above-mentioned real-time energy consumption Signal E.

5. The real-time indication method for driving efficiency of a transportation vehicle according to claim 1, characterized in that the step of collecting the real-time energy consumption signal E through the energy consumption sensor (2) comprises:

An energy consumption sensor (2), which measures a power supply voltage U, a power supply current I, and a time t through its AC or DC voltage sensor, an AC or DC current sensor, and a time sensor; or its electric power sensor and time sensor , Measured electric power P and time t; or it is a power consumption sensor, measured electric power W;

First, the signal measured by the energy consumption sensor (2) is sent to the computing component (3), and the computing component (3) calculates the energy consumption E according to E = W = UIt or E = W = Pt or E = W.

6. The method for real-time indication of driving efficiency of a transportation vehicle according to claim 1, characterized in that: said computing component (3) transmits real-time driving efficiency information to an automatic cruise device through a communication interface circuit, and the original automatic cruise device The automatic energy-saving driving control program and communication interface circuit are added to make it perform closed-loop control according to the maximum driving efficiency by automatically adjusting the throttle according to the real-time driving efficiency information sent by the computing component (3).

7. A device using a real-time indication method of driving efficiency of a transportation vehicle, comprising a driving distance sensor (1), an energy consumption sensor (2), a computing component (3), a display component (4), and a power supply component (5), as described above The driving distance sensor (1) and the energy consumption sensor (2) are connected to the computing component (3) with corresponding interface circuits, and are used to obtain a real-time transportation distance signal S and a real-time energy consumption signal E of the transportation means, and are calculated according to the above signals. A real-time driving efficiency signal n represented by the distance traveled per unit energy consumption or the energy consumed per unit distance, where n = s / E or n = E / s; the computing unit (3) is connected to the display unit (4) with a corresponding interface circuit For transmitting the above-mentioned real-time running efficiency signal η to a display component (4) and displaying the running efficiency signal II of the transportation means in real time by the display part (4); the input end of the power source component (5) and the built-in transportation means Electricity The power supply is connected, and the output end of the power supply component (5) is connected with the driving distance sensor (1), the energy consumption sensor (2), the computing component (3) and the display component (4) as required.

8. The device for real-time indicating a driving efficiency of a transportation vehicle according to claim 7, characterized in that: said traveling distance sensor (1) uses Hall, photoelectricity, electromagnetic in land transportation vehicles. Or switch sensor, installed on the transmission, transmission shaft, wheel hub, speed output of the speedometer or other suitable position proportional to the distance traveled; on water, in water or on air vehicles, using water Or air flows through the distance sensor.

9. The device for real-time indication of driving efficiency of a vehicle according to claim 7, characterized in that: said computing component (3) comprises a corresponding level conversion and other interface circuits and a driving distance sensor (1) ), The energy consumption sensor (2) and the display part (4) are connected; if necessary, use the A / D, D / A circuit to the distance sensor (1) and the energy consumption sensor

(2) The input signal and the signal output to the display unit (4) are subjected to analog / digital and digital / analog conversion; the operation function in the operation unit (3) is implemented by an operational amplifier circuit, a single-chip computer (computer) circuit or a combination circuit thereof .

10. The device for real-time indicating the driving efficiency of a vehicle according to claim 7, characterized in that: said display part (4) uses zeros such as LCD, LED, CRT, fluorescent tube or pointer indicator. Parts or combinations thereof, displayed in analog and / or digital manner; mounted on the dashboard of the transportation vehicle or other convenient locations for the driver; analog display parts

The indication of (4) is full range indication or local range indication. The starting scale of the local range indication is not 0, and the local range under higher driving efficiency is enlarged.