KR20170078336A - Fuel drainplug and fuel residual quantity detecting system - Google Patents

Fuel drainplug and fuel residual quantity detecting system Download PDF

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Publication number
KR20170078336A
KR20170078336A KR1020150188736A KR20150188736A KR20170078336A KR 20170078336 A KR20170078336 A KR 20170078336A KR 1020150188736 A KR1020150188736 A KR 1020150188736A KR 20150188736 A KR20150188736 A KR 20150188736A KR 20170078336 A KR20170078336 A KR 20170078336A
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fuel
amount
remaining
vehicle
information
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KR1020150188736A
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Korean (ko)
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KR101766346B1 (en
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김창규
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주식회사 자스텍
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/06—Fuel tanks characterised by fuel reserve systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/06—Fuel tanks characterised by fuel reserve systems
    • B60K15/061—Fuel tanks characterised by fuel reserve systems with level control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01F25/0061—
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0092—Pressure sensor associated with other sensors, e.g. for measuring acceleration or temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Development (AREA)
  • Transportation (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Fluid Mechanics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Analytical Chemistry (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Measuring Volume Flow (AREA)

Abstract

The present invention relates to a fuel drain plug capable of detecting the remaining amount of fuel and a remaining fuel amount detection system including the same, wherein the remaining amount of fuel detection system according to the embodiment of the present invention,
A fuel remaining amount detection unit for detecting a flow pressure and a flow temperature in a fuel tank, a vehicle running state through vehicle speed and engine RPM information transmitted from an external device, and if the vehicle is in a designated vehicle running state, Calculates a remaining fuel amount by calculating one or more values of the flow rate pressure, the flow rate temperature, and the vehicle tilt information obtained through the tilt detection sensor, stores the calculated remaining fuel amount together with the vehicle running status information, And a remaining amount calculator.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fuel drain plug capable of detecting a remaining amount of fuel,

The present invention relates to a system for detecting a fuel injection amount and a remaining amount of a vehicle, and more particularly, to a fuel drain plug capable of detecting the fuel remaining amount and a fuel remaining amount detection system including the same.

In order to alleviate the economic burden of the freight forwarders, in the case of commercial freight vehicles, they are paid different amounts of oil price subsidy by the maximum amount. In order to prevent such illegal supply and demand that abuses the oil price subsidy system, .

However, there are frequent cases in which freight vehicle drivers and others complain with the gas station owner to shake up oil price subsidies by paying a false card without inflating or refueling the actual amount.

Therefore, the government office has developed and operated a system that constantly checks suspicious transactions of oil price subsidies by creating various types of unexpected supply and demand such as short-time repetitive grouting, excess oiling capacity, and number of oiling per day.

However, since it is based on the amount of gasoline, it is almost impossible to check whether the flow rate of the gasoline is used for actual vehicle operation. Therefore, it is still not completely eradicating the supply and demand of oil price subsidies.

Whenever the vehicle is in a running state (starting standby state after starting, idle state, starting off state, etc.), the remaining fuel amount is calculated to check the occurrence of oiling or leaking, It is possible to effectively prevent illegal supply and demand of oil price subsidies.

Korean Patent Registration No. 10-1212834 Korean Registered Patent No. 10-1076771

Accordingly, an object of the present invention is to provide a fuel remaining amount detection system capable of accurately detecting a fuel injection amount and a fuel remaining amount in order to prevent the illegal supply and demand of oil price subsidies,

Still another object of the present invention is to provide a fuel remaining amount detection system capable of accurately detecting the remaining amount of fuel in the fuel tank regardless of the degree of inclination of the vehicle and a fuel drain plug which is a kind of fuel remaining amount detection sensor used in the system.

It is a further object of the present invention to provide a method and apparatus for calculating the remaining amount of fuel every time the running state of the vehicle is changed to judge whether fuel or leaking occurs and to transmit the fuel remaining amount change according to the running state of the vehicle to the digital running recorder, And to provide a fuel amount detection system capable of preventing illegal supply and demand of fuel price subsidy or providing convenience of vehicle control and vehicle management.

According to an aspect of the present invention, there is provided a fuel drain plug capable of being coupled to a lower portion of a fuel tank,

A pressure sensing sensor for sensing a flow pressure in the vehicle fuel tank;

A temperature sensing sensor for sensing a flow rate temperature in the fuel tank;

An information transmission unit for transmitting sensed temperature and pressure information to an external device;

And a power supply for supplying operating power to the vehicle fuel tank.

The information transfer unit of the fuel drain plug is one of a short-range wireless communication unit and an I2C (Inter Integrated Circuit) interface unit.

The pressure sensing sensor and the temperature sensing sensor are mounted in the fuel drain plug, and the sensing unit for sensing the flow pressure and the temperature is exposed at an upper portion of the fuel drain plug.

The remaining fuel amount detection system according to the embodiment of the present invention,

A fuel drain plug for sensing flow rate pressure and flow rate temperature in the fuel tank;

The controller determines the vehicle running state based on the vehicle speed and the engine RPM information transmitted from the external device, and when the vehicle is in the designated vehicle running state, the flow rate pressure and flow rate transmitted from the fuel drain plug and the vehicle tilt information acquired through the tilt sensor And a fuel remaining amount calculator for calculating the remaining fuel amount, storing the calculated remaining fuel amount together with the vehicle running condition information, and transmitting the stored remaining fuel amount to the external device.

The fuel residual quantity detection system fuel drain plug,

A pressure sensing sensor for sensing a flow pressure in the vehicle fuel tank;

A temperature sensing sensor for sensing a flow rate temperature in the fuel tank;

An information transmission unit for transmitting sensed temperature and pressure information to an external device;

And a power supply for supplying operating power to the vehicle fuel tank,

The fuel remaining amount calculator compares the stored remaining fuel amount with a newly calculated remaining fuel amount to generate fueling or leaking event occurrence information and transmits it together with the remaining fuel amount.

Further, the fuel remaining amount calculator is characterized in that the remaining fuel amount is calculated when the discriminated vehicle driving state is one of a starting standby state, an idle state, and a starting off state after starting,

Further, the fuel remaining amount calculator determines the idling state when the vehicle speed is zero and the engine RPM is equal to or greater than the specified RPM. When the idling state duration exceeds the specified time, the remaining fuel amount is firstly calculated. And generates the fuel or leaking event occurrence information, and transmits the first and second calculated fuel remaining amounts together with the oiling or leaking event occurrence information.

The fuel remaining amount detection system may display the remaining fuel amount of each vehicle operating state received from the fuel remaining amount calculator as one of the external devices, and when receiving the fueling or leaking event occurrence information, The present invention is characterized in that it further includes a digital running recorder for transmitting the data.

Wherein the digital running recorder transmits vehicle speed and engine RPM information to the fuel remaining amount calculator in n seconds (n is a positive real number) cycle.

According to the above-mentioned problem solving means, the fuel drain plug according to the embodiment of the present invention is a fuel remaining amount sensing portion capable of being coupled to the lower end portion of the fuel tank, and the interval in which the horizontal section can not be measured in the fuel tank is reduced to less than 0 to 10% The fuel remaining amount in the fuel tank can be detected more accurately than the fuel sender method and the OBD method.

Further, the fuel remaining amount calculator according to the embodiment of the present invention transmits the fuel remaining amount in the standby state after starting, the fuel remaining amount in the idle state, and the fuel remaining amount in the start-off state to DTG respectively, The amount of change in the amount of fuel remaining in the tank, the amount of change in the amount of fuel remaining in the fuel tank in the idle state, and the amount of fuel consumed during operation can be accurately calculated. From this, it is possible to conveniently provide data or information that can prevent illegal supply / There is convenience to do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating a configuration of a fuel remaining amount detection system and its peripheral configuration according to an embodiment of the present invention; FIG.
FIG. 2 is an exemplary view of a fuel drain plug, which is an example of a fuel remaining amount sensing unit according to an embodiment of the present invention in FIG. 1; FIG.
3 is an exemplary block diagram of the fuel drain plug 100 and the fuel remaining amount calculator 200 according to the embodiment of the present invention.
4 is a flowchart illustrating an operation of the fuel remaining amount calculator 200 according to an embodiment of the present invention.
5 is an exemplary output report when the fuel remaining amount calculator 200 according to the embodiment of the present invention is used.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 illustrates a configuration of a fuel residual amount detection system according to an embodiment of the present invention and a peripheral configuration diagram thereof. FIG. 2 illustrates a fuel drain plug 100 as an example of a fuel remaining amount sensing unit according to an embodiment of the present invention, . 3 illustrates a block diagram of a fuel drain plug 100 and a fuel remaining amount calculator 200 according to an embodiment of the present invention.

The term "fuel remaining amount detection system " used in Fig. 1 and the following description is a concept including the fuel remaining amount detection unit 100 and the fuel remaining amount calculator 200 required to detect the fuel remaining amount in the fuel tank, The digital tacho graph (DTG) 300 can be further defined. The fuel residual quantity sensing unit 100 uses a specially designed fuel drain plug in the embodiment of the present invention. A device or part capable of detecting the flow rate pressure and the temperature of the flow rate in the fuel tank in addition to the fuel drain plug and transferring it to the fuel remaining amount calculator 200 to be described later can also be used as the fuel remaining amount sensing part 100. [

Referring to FIGS. 1 and 2, the fuel remaining amount sensing unit 100 senses the flow pressure and flow temperature of the fuel in the fuel tank and transmits the sensed fuel pressure to the fuel remaining amount calculator 200. The fuel remaining amount sensing unit 100 may be embodied as a fuel drain plug detachably mountable to a fuel drain port located on the lower surface of the fuel tank as shown in FIG. 3, the fuel drain plug serving as the fuel remaining amount sensing portion 100 for sensing the flow rate pressure and the flow rate temperature,

A pressure sensing sensor 110 for sensing the flow pressure in the vehicle fuel tank,

A temperature sensing sensor 120 for sensing the flow rate temperature in the fuel tank,

An information transfer unit 130 for transferring sensed temperature and pressure information to the fuel remaining amount calculator 200 as an external device,

And a power supply unit 140 for supplying operating power to detect the remaining amount of fuel in the vehicle fuel tank. A coin battery may be used as the power supply unit 140.

The information transmitting unit 130 may use one of a short range wireless communication unit (Bluetooth, ZigBee, etc.) or a wired (e.g., I2C (Inter Integrated Circuit)) interface unit.

For reference, the pressure sensing sensor 110 and the temperature sensing sensor 120 are mounted in the fuel drain plug, and the sensing unit for sensing the flow pressure and the temperature is exposed at an upper portion of the fuel drain plug. That is, by allowing the sensing unit to be exposed in the hole formed in the upper surface of the fuel drain plug, the flow rate pressure and the flow rate temperature of the fuel introduced into the hole can be sensed. Of course, the temperature sensing sensor 120 may be located in the fuel drain plug. As an alternative embodiment, the fuel drain flap may be provided with only a pressure sensor for sensing the flow rate pressure in the vehicle fuel tank.

If the fuel drain plug detachably attachable to the lower portion of the fuel tank is used as the fuel remaining amount sensing unit 100, the interval in which the horizontal section can not be measured in the fuel tank is reduced to less than 0 to 10%, and the fuel remaining amount can be more accurately detected. In the case of a general fuel sender method, the use of the fuel drain plug is superior in terms of effectiveness, considering that the interval in which the horizontal section can not be measured is in the range of 0 to 20% and 80 to 100%. The fuel drain plug according to the embodiment of the present invention can be used in various general methods (for example, a fuel injection method, a fuel injection method, The fuel remaining amount in the fuel tank can be detected more accurately. Since the detected fuel remaining amount can be corrected using the vehicle tilt information in the fuel remaining amount calculator 200 described later, the overall error rate can be reduced to 3% or less.

1, the fuel remaining amount calculator 200 determines the driving state of the vehicle through the vehicle speed and the engine RPM information transmitted from an external device, for example, the DTG 300, Calculates the remaining fuel amount by calculating at least one of the flow rate pressure, the flow rate temperature, and the vehicle slope information acquired through the tilt sensor, and stores the calculated remaining fuel amount together with the vehicle running status information It may be transmitted to the DTG 300 as an external device or may be transmitted to the DTG 300 as an external device without being stored. The fuel remaining amount calculator 200 is installed in a vehicle structure adjacent to a fuel tank, and can be operated by supplying power from the vehicle at all times. Of course, the operation power may be supplied in accordance with the operation of the vehicle ignition key.

Meanwhile, the vehicle driving state is defined as a concept including a waiting state after starting, a driving state, an idle state, and a starting-off state. The fuel remaining amount calculator 200 calculates and stores the remaining amount of fuel when the vehicle is in any one of the vehicle driving state, the idling state, and the starting off state, And transmits the fuel remaining amount and the vehicle driving state information to the DTG 300 as an external device. In some cases, the oil / leak event occurrence information can be further added and transmitted. This will be described later. Of course, the fuel remaining amount calculator 200 may further transmit the trip information and the trip fuel amount to the DTG 300.

The FT (Fuel Tank) monitor or DTG 300 shown in FIG. 1 displays the remaining fuel amount of each vehicle traveling state transmitted from the fuel remaining amount calculator 200. The DTG 300, which is one of the external devices, transmits vehicle speed and engine RPM information to the remaining fuel amount calculator 200 (broadcasting casting) in n seconds (n is a positive real number, for example, 1 second) (Fuel remaining amount and vehicle running state information) and vehicle information together with the fueling or leaking event occurrence information from the fuel remaining amount calculator 200 to the control server (not shown).

The control server can be defined as recording and managing the operation record of the vans or vehicles to which the remaining fuel amount calculator 200 is attached and the remaining amount of fuel according to the vehicle operation status in order to prevent the illegal supply and demand of the fuel subsidy.

Hereinafter, the configuration of the fuel remaining amount calculator 200 described above with reference to FIG. 3 will be described in more detail.

First, the fuel remaining amount calculator 200 includes an information transfer unit (for example, BT BLE) 210 for receiving the flow pressure and the flow temperature from the fuel remaining amount sensing unit 100, A user interface unit 240 including various indicators (LEDs) and a buzzer for outputting a warning sound, and a controller for overall control of the operation of the remaining fuel amount calculator 200 220).

The control unit 220 determines the driving state of the vehicle based on the vehicle speed and the engine RPM information transmitted from the DTG 300. In the case of the designated vehicle driving state, the controller 220 controls the flow rate pressure, Calculates the remaining fuel amount by calculating one or more values of the vehicle tilt information acquired through the detection sensor, and stores the calculated remaining fuel amount together with the vehicle running condition information and transmits the stored remaining fuel amount to the DTG 300.

Further, the controller 220 compares the stored remaining amount of fuel with the newly calculated remaining amount of fuel to generate information on the occurrence of oiling or leaking events, and transmits the information together with the remaining amount of fuel.

As a more detailed example, the control unit 220 determines the idle state when the vehicle speed is zero and the engine RPM is equal to or greater than the specified RPM (RPM 400), and when the idle state duration exceeds the specified time (30 seconds) And generates fueling or leaking event occurrence information by secondary calculation of the fuel remaining amount when the idle state is released and transmits the primary and secondary calculated fuel remaining amount together with the oiling or leaking event occurrence information to the DTG 300 .

The control operation of the controller 220 will be described in more detail with reference to FIG. The control unit 220 of the fuel amount calculation calculator 200 can communicate with the DTG 300 through the UART and the power supply unit 250 receives the power from the vehicle at all times or according to the operation of the ignition key, And supplies it to each part of the remaining amount calculator 200. The information transmission unit 210 may also use the I2C interface unit according to the information transmission unit 130 of the remaining fuel amount sensing unit 100. [

FIG. 4 illustrates an operation flow chart for explaining the operation of the fuel remaining amount calculator 200 according to the embodiment of the present invention, and FIG. 5 illustrates an operation flow of the fuel residual amount calculator 200 according to an embodiment of the present invention. Each of which is an example of the report.

Referring to FIG. 4, the controller 220 of the remaining fuel amount calculator 200, which is always supplied with power, wakes up (step S10) when a certain condition is satisfied in the sleep mode (voltage fluctuation or serial data input).

In the wakeup state, the control unit 220 checks whether the vehicle speed and the engine RPM information are received from the DTG 300 (step S15). The vehicle speed and engine RPM information are broadcast cast from the DTG 300, for example, every one second.

When the vehicle speed and the engine RPM information are received, the control unit 220 determines the vehicle driving state through the vehicle speed and the engine RPM information (S20). For example, if the vehicle speed is zero and the engine RPM is equal to or greater than 400, it is determined that the vehicle is in a standby state after startup, and the remaining fuel amount is calculated according to vehicle driving conditions and stored (S25).

The control unit 220 calculates the fuel pressure and the flow temperature transmitted from the fuel remaining amount sensor 100, that is, the fuel drain plug, and the vehicle tilt information read from the tilt sensor 230 to calculate the remaining fuel amount do. Knowing the flow pressure, you can know the height of the flow rate in the fuel tank. If you know the flow rate temperature, you can calculate the fuel balance considering the thermal expansion coefficient of the fuel. Of course, it is possible to calculate the remaining amount of fuel in the horizontal state by correcting it with the inclination information of the vehicle.

When the remaining fuel amount is calculated, it can be checked at the end of the previous operation to check the occurrence of the oiling or leaking event compared with the stored remaining fuel amount. That is, the controller 220 compares the remaining fuel amount calculated in step S25 with the remaining fuel amount calculated and stored at the end of the previous operation to check occurrence of the oiling or leaking event (step S30).

If there is no oiling or leaking event as a result of the check, the vehicle driving state information (i.e., waiting state after starting) and the calculated remaining fuel amount are transmitted to the DTG 300 via UART communication (step S35) The control unit 220 transmits the vehicle running state information, the fuel remaining amount, and the oiling or leaking event occurrence information together to the DTG 300 (step S40).

The DTG 300 stores the information transmitted from the fuel remaining amount calculator 200 by distinguishing the vehicle driving state by date and time as shown in FIG. 5, and stores the classified information by referring to the oiling or leaking event occurrence information do.

After performing step S35 or step S40, the controller 220 determines whether it is in the start-off state (step S45). Judgment can be made through vehicle speed and engine RPM information. If valid vehicle speed and engine RPM information are received, the process returns to steps S15 and S20 to again determine the vehicle running state.

The controller 220 determines that the vehicle is in an idle state when the vehicle speed is zero and the engine RPM is equal to or more than 400, which is the specified RPM. If the idle state duration exceeds a predetermined time, for example, 30 seconds, One method is to first calculate the remaining amount of fuel, calculate the remaining amount of fuel when the idle state is released (when the speed is generated), compare the first calculated amount of fuel and the second calculated amount of fuel to generate oiling or leaking event occurrence information do. If an oiling or leaking event has occurred, the control unit 220 proceeds to step S40 and transmits the vehicle running state information (idle state), the remaining fuel amount, and the oiling or leaking event occurrence information described above together. If the oiling or leaking event has not occurred, .

If the vehicle speed increases after the starting standby state after start-up, it is judged to be running and the remaining fuel amount is not calculated. If the idle state duration is less than the predetermined time (30 seconds), it is also determined that the vehicle is temporarily stopped and the remaining fuel amount is not calculated.

In the wakeup state, the controller 220 repeats steps S15 to S45 to calculate the fuel remaining amount in the start waiting state after starting and the remaining fuel amount in the idle state, and transmits the calculated remaining fuel amount to the DTG 300 The DTG 300 can generate a report in which information as shown in FIG. 5 is recorded. Such a report is a report in a form that can be output to the DTG 300 or to the display unit from the control server.

On the other hand, if the vehicle speed is zero in step S45 and the engine RPM is zero or the vehicle speed and the engine RPM are not received, the controller 220 determines that the engine is in the start-off state and proceeds to step S50 to calculate and store the remaining fuel amount again. Then, the control unit 220 transmits the fuel remaining amount after starting and the remaining fuel amount at the end of the operation, which are calculated first at startup, to the DTG 300 (S55), and enters the sleep mode (S60). The remaining fuel amount calculated and stored in step S50 is used for determining whether the fuel is leaking or leaking when restarting.

The control unit 220 of the fuel remaining amount calculator 200 according to the embodiment of the present invention calculates the fuel remaining amount in the start standby state, the fuel remaining amount in the idle state, and the fuel remaining amount in the start- It is possible to accurately calculate the amount of change in the fuel remaining amount in the fuel tank before and after startup ON / OFF, the amount of change in the remaining amount of fuel in the fuel tank in the idle state, the amount of fuel consumption during operation, and the like.

Therefore, by using the fuel drain plug and the fuel remaining amount calculator 200 according to the embodiment of the present invention, it is possible to conveniently acquire data or information that can prevent illegal supply and demand of oil price subsidy.

Although the present invention has been described with respect to a system for calculating and storing the remaining amount of fuel in the vehicle fuel tank, the fuel drain plug and the remaining amount of fuel detection system according to the embodiment of the present invention may be stored in a vehicle control and / And the like, so that it is possible to supervise and supervise various vehicles, as well as to calculate the fuel consumption amount of the management vehicle. Also, in the embodiment of the present invention, the fuel remaining amount sensing unit and the fuel remaining amount calculator are described as operating as separate modules. However, the fuel remaining amount sensing unit and the fuel remaining amount calculator may be integrated and used in a fuel tank.

While the invention has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the true scope of the present invention should be determined only by the appended claims.

Claims (11)

A pressure sensing sensor for sensing a flow pressure in the vehicle fuel tank;
An information transmission unit for transmitting the sensed flow pressure information to an external device;
And a power supply for supplying operating power to the drain port of the vehicle fuel tank to detect the remaining fuel amount.
The fuel drain plug according to claim 1, further comprising: a temperature sensing sensor for sensing a flow rate temperature in the fuel tank, wherein the information transmission unit is one of a short-range wireless communication unit and a wired interface unit.
The fuel drain plug according to claim 2, wherein the pressure sensing sensor and the temperature sensing sensor are mounted in a fuel drain plug, and the sensing unit for sensing a flow pressure is exposed at an upper portion of the fuel drain plug.
A fuel remaining amount sensing unit for sensing at least one of a flow rate pressure and a flow rate temperature in the fuel tank;
And a control unit for determining at least one of a flow rate and a flow temperature transmitted from the fuel remaining amount sensing unit when the vehicle is in a designated vehicle operation state, And a fuel remaining amount calculator calculating the remaining fuel amount by calculating one or more values of the vehicle tilt information and transmitting the calculated remaining fuel amount to the external device together with the vehicle running status information.
The fuel cell system according to claim 4,
A sensing sensor for sensing at least one of a flow pressure and a flow temperature in the vehicle fuel tank;
An information transmitting unit for transmitting at least one of the sensed temperature and pressure information to an external device;
And a power supply for supplying operating power to the vehicle fuel tank, wherein the fuel drain plug is coupled to the drain port of the vehicle fuel tank.
The remaining fuel amount detection system according to claim 4 or 5, wherein the fuel remaining amount sensor and the fuel remaining amount calculator transmit / receive the flow pressure and the flow temperature through one of a short range wireless communication unit and a wired interface unit.
The fuel supply amount calculator according to claim 4 or 5,
Wherein the control unit stores the calculated remaining amount of the fuel together with the vehicle running state information and compares the stored remaining fuel amount with the newly calculated remaining fuel amount to generate fueling or leaking event occurrence information and transmits it together with the remaining fuel amount. .
The fuel supply amount calculator according to claim 4 or 5,
Wherein the remaining fuel amount is calculated when the discriminated vehicle operation state is one of a start standby state, an idle state, and a start-off state after start-up.
9. The fuel supply amount calculator according to claim 8,
If the vehicle speed is zero and the engine RPM is above the specified RPM, it is determined as idle. If the idle state duration exceeds the predetermined time, the remaining fuel amount is firstly calculated. When the idle state is released, And generates the first and second calculated remaining fuel amounts together with the oiling or leaking event occurrence information.
The method according to claim 4 or 5, further comprising: displaying, as one of the external devices, the remaining fuel amount of each vehicle operating state received from the fuel remaining amount calculator, And a running recorder for detecting the remaining fuel amount.
11. The system of claim 10, wherein the digital trainer transmits vehicle speed and engine RPM information to the fuel remaining amount calculator in n seconds (n is a positive real number) cycle.
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WO2020144698A1 (en) * 2019-01-09 2020-07-16 ERM Advanced Telematics Ltd. Remotely activated capacitive sensor for gauging fluid volume in fuel tanks

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JP2005153586A (en) * 2003-11-21 2005-06-16 Mitsubishi Heavy Ind Ltd On-vehicle information transmitting device, fuel replenishing stand and fuel replenishing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020144698A1 (en) * 2019-01-09 2020-07-16 ERM Advanced Telematics Ltd. Remotely activated capacitive sensor for gauging fluid volume in fuel tanks

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