KR101670784B1 - Inspection Device for Fuel Level Signal Converter - Google Patents

Inspection Device for Fuel Level Signal Converter Download PDF

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Publication number
KR101670784B1
KR101670784B1 KR1020150044885A KR20150044885A KR101670784B1 KR 101670784 B1 KR101670784 B1 KR 101670784B1 KR 1020150044885 A KR1020150044885 A KR 1020150044885A KR 20150044885 A KR20150044885 A KR 20150044885A KR 101670784 B1 KR101670784 B1 KR 101670784B1
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KR
South Korea
Prior art keywords
conversion unit
signal converter
auxiliary
main
signal
Prior art date
Application number
KR1020150044885A
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Korean (ko)
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KR20160116714A (en
Inventor
이영호
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대한민국
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Priority to KR1020150044885A priority Critical patent/KR101670784B1/en
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Application granted granted Critical
Publication of KR101670784B1 publication Critical patent/KR101670784B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • 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
    • G01F23/22—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 measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—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 measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms

Abstract

The present invention can perform the function check of the converter, shorten the inspection time required for the converter check, check the overall circuit state of the converter, and improve the reliability of the inspection. Also, It is possible to minimize the time and space limitation because it is possible to perform the inspection by providing the capacitance corresponding to the amount of the residual fuel without moving the fuel cell. Also, since the inspection result can be displayed numerically, Or a waveform analyzer to perform additional checking, thereby improving the precision and accuracy of the inspection. A signal converter checking apparatus according to an embodiment of the present invention includes a capacitor electrically connected to a signal converter and supplying a variable capacitance signal to the signal converter, and a capacitor electrically connected to the signal converter to supply power to the signal converter. A main conversion unit connection terminal electrically connected to the main conversion unit of the signal converter to receive and transmit an electric signal to and from the main conversion unit and a main conversion unit connection terminal electrically connected to the auxiliary conversion unit of the signal converter, And a first display for receiving and outputting an output voltage and an output current from the main converting unit and the auxiliary converting unit from the main converting unit connecting terminal and the auxiliary converting unit connecting terminal, A second display for displaying power supplied to the signal converter; And a voltage dial electrically connected to the main conversion unit connection terminal and the auxiliary conversion unit connection terminal to selectively apply the output voltage.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a signal converter checking apparatus for checking a converter for converting a remaining fuel amount signal into a voltage. More particularly, the present invention provides a capacitance-voltage converter that receives a capacitance signal relating to a residual fuel amount and converts the capacitance signal into a voltage, provides a capacitance signal equivalent to the capacitance signal corresponding to the residual fuel amount, To a converter checking device.

The contents described in this section merely provide background information on the embodiment of the present invention and do not constitute the prior art.

Transportation means using liquid fuel are provided with a fuel tank in which the fuel is stored, and information on the amount of fuel stored in the fuel tank should be known to the operator operating the vehicle for safe operation.

Open No. 10-2012-0115822 discloses a method for measuring the amount of fuel stored in a fuel tank, and a method for calculating a fuel amount based on capacitance inside a fuel tank detected in a metal plate is provided .

Similar to this method, there are widely used apparatuses for measuring the amount of fuel, inputting the capacitance relating to the remaining fuel amount in the fuel tank, converting it into a voltage to calculate the remaining fuel, and displaying the remaining amount of fuel to the operator.

A converter that converts capacitance to voltage is a precision instrument that includes various elements such as an integrated circuit (IC), a transistor, and a resistor inside thereof, and frequently causes defects or breakage of an internal circuit depending on use.

However, in the related art, there are disadvantages in that it is necessary to check the internal elements of the transducer individually, so that it is difficult to check the function of the transducer. have.

In order to check the function of the converter, it is necessary to directly connect with the fuel tank to input the capacitance from the fuel tank and to perform the actual function check. Therefore, there is a disadvantage that there is a time and space limitation in the checking of the converter.

In order to solve such a problem, the present invention provides a capacitor capable of providing a capacitance corresponding to the amount of residual fuel, so that capacitance is provided from the capacitor to the converter to perform the function check of the converter without placing the converter around the fuel tank And to provide a check device that can be used for the inspection.

A signal converter checking apparatus according to an embodiment of the present invention includes a capacitor electrically connected to a signal converter and supplying a variable capacitance signal to the signal converter, and a capacitor electrically connected to the signal converter to supply power to the signal converter. A main conversion unit connection terminal electrically connected to the main conversion unit of the signal converter to receive and transmit an electric signal to and from the main conversion unit and a main conversion unit connection terminal electrically connected to the auxiliary conversion unit of the signal converter, And a first display for receiving and outputting an output voltage and an output current from the main converting unit and the auxiliary converting unit from the main converting unit connecting terminal and the auxiliary converting unit connecting terminal, A second display for displaying power supplied to the signal converter; And a voltage dial electrically connected to the main conversion unit connection terminal and the auxiliary conversion unit connection terminal to selectively apply the output voltage.

In addition, the capacitor may include a main capacitor provided to supply a variable capacitance signal to the main conversion unit; And an auxiliary capacitor provided to supply a variable capacitance signal to the auxiliary conversion unit.

A first dial provided to variably adjust a capacitance signal output from the main capacitor; And a second dial provided to variably adjust the capacitance signal output from the auxiliary capacitor.

The test terminal may further include a test terminal provided to supply an output voltage and an output current received from the main conversion unit connection terminal and the auxiliary conversion unit connection terminal to the external module.

According to the embodiment of the present invention, the function check of the converter can be performed, the inspection time required for the converter check can be shortened, and the overall circuit state of the converter can be checked, thereby improving the reliability of the check.

In addition, it is possible to provide a capacitance corresponding to the residual fuel amount without moving the transducer around the fuel tank to perform the inspection, thereby minimizing time and space limitations.

In addition, the check result can be digitized and displayed, which simplifies the inspection method. Additional checking can be performed by connecting a precision measuring instrument or a waveform analyzer, thereby improving the precision and accuracy of the inspection.

1 is a front perspective view showing a signal converter inspection apparatus according to an embodiment of the present invention.
2 is an overall perspective view showing an example of using the signal converter check apparatus of FIG.
3 is a circuit diagram showing an internal circuit of the signal converter checking apparatus according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail based on exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different 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 is a front perspective view showing a signal converter inspection apparatus according to an embodiment of the present invention, FIG. 2 is an overall perspective view showing an example of using a signal converter inspection apparatus of FIG. 1, and FIG. Fig. 6 is a circuit diagram showing an internal circuit of the signal converter check apparatus according to an example. Fig.

The signal converter check device 10 is a device connected to the signal converter 20 to perform a function check for checking normal operation of the signal converter 20. [

The signal converter 20 requires power for operation, receives a capacitance signal, converts the capacitance signal into a voltage corresponding thereto, and outputs the converted voltage. The signal converter 20 receives a capacitance signal of a main fuel tank (not shown) and an auxiliary fuel tank (not shown), converts the capacitance signal into a voltage, receives a capacitance signal of the main fuel tank, (Not shown) and an auxiliary output voltage converting unit (not shown) for receiving the electrostatic capacitance signal of the auxiliary fuel tank and converting it into a voltage. When the main conversion unit and the auxiliary conversion unit are supplied with the electrostatic capacity signal of the same size as the capacitance signal of the main fuel tank or the auxiliary capacitance of the auxiliary fuel tank, Conversion can be output.

The power supply terminal 100 is a structure for electrically connecting the signal converter 20 and the signal converter check device 10 to supply power to the signal converter 20. [ A power cable for supplying power to the signal converter 20 is inserted into the power supply terminal 100 and serves as a connection terminal for supplying power from the external power supply to the signal converter 20 through the power cable do.

The power switch 103 is a switch for turning on / off the external power supply to supply or cut off the power to the signal converter check device 10. [ The power supplied to the signal converter check device 10 may be an AC voltage.

The power supplied from the external power supply to the signal converter checking apparatus 10 or the power supplied from the power supply terminal 100 to the signal converter 20 is supplied to the signal converter 20 And may be converted into necessary power required for operation. More specifically, a transformer 101 is provided between the power supply terminal 100 and the external power supply to lower or amplify the 115 V AC voltage supplied from the external power supply to a DC voltage of 28 V required for the signal converter 20, The voltage of the power supplied from the signal converter 20 to the power supply terminal 100 can be reduced or amplified.

The capacitor is configured to supply a variable capacitance signal to the signal converter 20. The capacitor includes a main capacitor 200 and an auxiliary capacitor 210.

The main capacitor 200 is provided to supply a variable capacitance signal to the main conversion unit of the signal converter 20. The main capacitor 200 may be designed such that the internal circuit is designed to have a variable capacitance and may be provided to supply a continuously variable capacitance signal by operation of the first dial 201. [ The first dial 201 may be provided in the form of a dial switch, but may also be provided in the form of various switches for changing the value of the capacitance. The main capacitor 200 may be provided as an independent entity in the signal converter checking apparatus 10 as shown in FIG. 2 in order to have a configuration for more precisely changing the capacitance. In this case, the main capacitor 200 may be electrically connected to the capacitor connection terminal 205 to supply the capacitance signal.

The main conversion unit connection terminal 203 provides the electrostatic capacity signal supplied from the main capacitor 200 to the main conversion unit of the signal converter 20 and has a connection terminal for receiving the output voltage or the output current outputted from the main conversion unit. to be. The main conversion unit connection terminal 203 and the main conversion unit are electrically connected to each other to exchange electric signals of a capacitance signal, an output voltage, and an output current with each other. The main conversion unit connection terminal 203 is electrically connected to the capacitor connection terminal 205 to convert the electrostatic capacity signal into a main signal, To the conversion section.

The auxiliary capacitor 210 is provided to supply a variable capacitance signal to the auxiliary conversion unit of the signal converter 20. [ The auxiliary capacitor 210 may be designed such that the internal circuit is designed to have a variable capacitance and may be provided to supply a variable capacitance by operation of the second dial 211. The second dial 211 may be provided in the same manner as the first dial 201. The auxiliary capacitor 210 may be included independently of the main capacitor 200 or may be included inside the signal converter check apparatus 10 integrally with the signal converter check apparatus 10.

The auxiliary conversion unit connection terminal 213 is a connection terminal that provides the capacitance signal supplied from the auxiliary capacitor 210 to the auxiliary conversion unit of the signal converter 20 and receives the output voltage or output current output from the auxiliary conversion unit . The auxiliary conversion unit connection terminal 213 and the auxiliary conversion unit are electrically connected to each other to exchange electrical signals of a capacitance signal, an output voltage, and an output current with each other.

The voltage dial 110 is configured to selectively apply an output voltage output from the main converting unit and the auxiliary converting unit to the main converting unit connecting terminal 203 and the auxiliary converting unit connecting terminal 213. More specifically, the main conversion unit provides the output voltage obtained by converting the capacitance signal supplied from the main capacitor 200, and the auxiliary conversion unit provides the output voltage obtained by converting the capacitance signal supplied from the auxiliary capacitor 210. The voltage dial 110 selects any one of the output voltage outputted from the main converting unit, the output voltage outputted from the auxiliary converting unit, or the total output voltage outputted from the main converting unit and the auxiliary converting unit among these output voltages To the main conversion unit connection terminal 203 and the auxiliary conversion unit connection terminal 213, respectively.

The first display 300 receives the output voltage and the output current from the main converting unit and the auxiliary converting unit from the main converting unit connecting terminal 203 and the auxiliary converting unit connecting terminal 213, The values displayed on the first display 300 depend on the output voltage selected on the voltage dial 110, and the selected output voltage and output current can be numerically displayed. The first display 300 may display the output voltage and output current selected in the voltage dial 110 in the form of numbers.

The second display 310 is configured to display the power supplied to the signal converter 20 via the power supply terminal 100. The second display 310 may display the power supplied to the signal converter 20 in the form of a voltage, and may display the voltage in the form of a number.

The test terminal 400 is electrically connected to the external module such that an output voltage and an output current received by the main conversion unit connection terminal 203 and the auxiliary conversion unit connection terminal 213 are supplied to the external module.

The precision measuring device 401 is an example of an external module electrically connected to the test terminal 400 and displays an output voltage and an output current accommodated in the main converting part connecting terminal 203 and the auxiliary converting part connecting terminal 213 . The precision meter 401 may be a multimeter and may be to display the output voltage and output current in the form of a number. The precision measuring device 401 can display the output voltage and the output current and display the output voltage and the output current received from the main converting part connecting terminal 203 and the auxiliary converting part connecting terminal 213 in more detail.

The waveform analyzer 500 is electrically connected to an internal circuit of the signal converter 20 and is provided to analyze a waveform of an electric signal of voltage or current inside the signal converter 20. [ The waveform analyzer 500 may be provided in the form of an oscilloscope.

The foregoing description is merely illustrative of the technical idea of the present embodiment, and various modifications and changes may be made to those skilled in the art without departing from the essential characteristics of the embodiments. Therefore, the present embodiments are to be construed as illustrative rather than restrictive, and the scope of the technical idea of the present embodiment is not limited by these embodiments. The scope of protection of the present embodiment should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

10: Signal converter check device 20: Signal converter
100: power supply terminal 101: transformer
103: power switch 110: voltage dial
200: main capacitor 201: first dial
203: main conversion unit connection terminal 205: capacitor connection terminal
210: auxiliary capacitor 211: second dial
213: auxiliary conversion unit connection terminal 300: first display
310: Second display 400: Test terminal
401: Precision meter 500: Waveform analyzer

Claims (4)

A check device for checking a signal converter for converting a capacitance signal into a voltage,
A capacitor electrically connected to the signal converter and supplying a variable capacitance signal to the signal converter;
A power supply terminal electrically connected to the signal converter to supply power to the signal converter;
A main conversion unit connection terminal electrically connected to the main conversion unit of the signal converter to exchange electric signals with the main conversion unit;
An auxiliary conversion unit connection terminal electrically connected to the auxiliary conversion unit of the signal converter to exchange electric signals with the auxiliary conversion unit;
A first display for receiving and outputting an output voltage and an output current from the main conversion unit and the auxiliary conversion unit from the main conversion unit connection terminal and the auxiliary conversion unit connection terminal;
A second display for displaying power supplied to the signal converter; And
And a voltage dial electrically connected to the main conversion unit connection terminal and the auxiliary conversion unit connection terminal to selectively apply the output voltage. 2. The apparatus of claim 1, wherein the capacitor
A main capacitor configured to supply a variable capacitance signal to the main conversion unit; And
And an auxiliary capacitor configured to supply a variable capacitance signal to the auxiliary conversion unit. 3. The method of claim 2,
A first dial adapted to variably adjust a capacitance signal output from the main capacitor; And
Further comprising a second dial configured to variably adjust a capacitance signal output from the auxiliary capacitor. The method of claim 3,
Further comprising a test terminal configured to supply the output voltage and the output current received from the main conversion unit connection terminal and the auxiliary conversion unit connection terminal to the external module.
KR1020150044885A 2015-03-31 2015-03-31 Inspection Device for Fuel Level Signal Converter KR101670784B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150044885A KR101670784B1 (en) 2015-03-31 2015-03-31 Inspection Device for Fuel Level Signal Converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150044885A KR101670784B1 (en) 2015-03-31 2015-03-31 Inspection Device for Fuel Level Signal Converter

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KR20160116714A KR20160116714A (en) 2016-10-10
KR101670784B1 true KR101670784B1 (en) 2016-10-31

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100901156B1 (en) 2007-08-10 2009-06-04 이재민 Electronic loader for fuel cell
JP2013088374A (en) * 2011-10-21 2013-05-13 Mitsubishi Electric Corp Fuel detection apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100901156B1 (en) 2007-08-10 2009-06-04 이재민 Electronic loader for fuel cell
JP2013088374A (en) * 2011-10-21 2013-05-13 Mitsubishi Electric Corp Fuel detection apparatus

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