CN109443488A - A kind of high-precision fuel quantity measurement method with temperature-compensating - Google Patents
A kind of high-precision fuel quantity measurement method with temperature-compensating Download PDFInfo
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- CN109443488A CN109443488A CN201811290481.9A CN201811290481A CN109443488A CN 109443488 A CN109443488 A CN 109443488A CN 201811290481 A CN201811290481 A CN 201811290481A CN 109443488 A CN109443488 A CN 109443488A
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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
- G01F23/22—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
- G01F23/263—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 by measuring variations in capacitance of capacitors
- G01F23/266—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 by measuring variations in capacitance of capacitors measuring circuits therefor
Abstract
The high-precision fuel quantity measurement method with temperature-compensating that the invention discloses a kind of, comprising: oil measurement circuit is used for real-time measurement capacitance present formula fuel-quantity transducer capacitance C collected；Temperature measuring circuit, the temperature T for real-time measurement current fuel；Oil mass counting circuit, obtains the liquid level value H of current fuel tank by resolving oil measurement circuit capacitance signal C collected, obtains the oil mass volume V of current fuel tank in conjunction with height-volume curve of fuel tank itself.The present invention passes through the setting of temperature sensation part, temperature measuring circuit is enabled to measure the real time temperature of fuel oil, digital signal is converted by the temperature analog signal measured by temperature measuring circuit, and digital signal is transferred in digital measuring circuit, it realizes and accurately carries out oil measurement under condition of different temperatures, and it is widely used in capacitance-type fuel quantity test, there is preferable practicability.
Description
Technical field
The invention belongs to the technical fields of oil measurement, and in particular to a kind of high-precision fuel quantity with temperature-compensating
Measurement method.
Background technique
Capacitor-type Fuel Quantity Sensor is widely used in aircraft fuel oil measuring system, but traditional Capacitor-type Fuel Quantity Sensor is general
The function of measuring oil mass value in real time without final output, only as the probe of oil measurement.In recent years, aircraft is (special
It is not helicopter) a kind of digital type oil mass sensor has been used in fuel quantity meas urement system, by integrating oil mass in sensor internal
Measuring circuit realizes that final output measures the function of oil mass value in real time.
But this digital type oil mass sensor is all made of constant density (fuel density when room temperature) when calculating oil mass
It calculates, due to the density meeting when fuel oil temperature is non-room temperature (20 DEG C hereinafter, 30 DEG C or more) when the density and room temperature of fuel oil
There is difference, and temperature difference is bigger, fuel density difference is also bigger.So the high/low temperature of this digital type oil mass sensor is surveyed
It is bad to measure performance.
Summary of the invention
The high-precision fuel quantity measurement method with temperature-compensating that the purpose of the present invention is to provide a kind of improves number
The high/low temperature measurement performance of formula fuel-quantity transducer is realized and accurately carries out oil measurement under condition of different temperatures.
What the present invention was mainly achieved through the following technical solutions: a kind of high-precision fuel quantity survey with temperature-compensating
Amount method, comprising: oil measurement circuit is used for real-time measurement capacitance present formula fuel-quantity transducer capacitance C collected；Temperature
Measuring circuit, the temperature T for real-time measurement current fuel；Oil mass counting circuit, by the way that oil measurement circuit is collected
Capacitance signal C resolves to obtain the liquid level value H of current fuel tank, obtains current oil in conjunction with height-volume curve of fuel tank itself
The oil mass volume V of case.
The present invention converts current fuel fuel level for capacitance in use, by oil mass counting circuit
Value H obtains the oil mass volume V of current fuel tank in conjunction with height-volume curve of fuel tank itself；Temperature is obtained by oil mass counting circuit
T is spent, the density value ρ of fuel oil under Current Temperatures is obtained in conjunction with T- ρ curve, the real-time oil quantity of current fuel tank is calculated by M=V* ρ.
The present invention measures fuel oil by way of with temperature-compensating, avoids fuel oil density at different temperature
Measurement error caused by difference, it is ensured that the amount of fuel measured is exact value, improves use scope of the invention.
In order to preferably realize the present invention, further, the temperature measuring circuit passes through Wheatstone bridge and operation
Amplifier realizes temperature measurement；After the voltage value amplification of Wheatstone bridge output, CPU acquires the electricity by analog-digital converter
Pressure, obtains the temperature value of current fuel after resolving.The present invention enables temperature measuring circuit by the setting of temperature sensor
The real time temperature for measuring fuel oil converts digital signal for the temperature analog signal measured by temperature measuring circuit, and will count
Word signal is transferred in digital measuring circuit, is realized and is accurately carried out oil measurement under condition of different temperatures, and is widely used in electricity
The test of appearance formula oil mass, has preferable practicability.
In order to preferably realize the present invention, further, the TEMP and TEMP_GND of the temperature measuring circuit connect respectively
The both ends of temperature sensor, R1, R2, R3, RP1 and measurement platinum resistance RC of the temperature measuring circuit constitute 4 of electric bridge
Bridge arm；When RC resistance value is equal to the resistance value of RP1+ R3, electric bridge reaches equilibrium state, and bridge output voltage is 0 at this time, i.e. operation
Voltage difference between amplifier 2,3 feet is 0；Operational amplifier in circuit is used to amplify the voltage difference of electric bridge output, modulus
Converter is resolved for converting the CPU that digital quantity Data2 is sent in oil mass counting circuit for amplified voltage difference.
In use, when RC resistance value is equal to the resistance value of RP1+ R3, electric bridge reaches equilibrium state to the present invention, at this time
Bridge output voltage is 0, i.e., operational amplifier 2, the voltage difference between 3 feet are 0；Platinum resistance RC resistance value with the variation of temperature and
The voltage value of variation, electric bridge output directly reacts the difference between RC resistance value and the resistance value of RP1+ R3, and this variation is linear
's；In the case where the resistance value of known RP1+ R3, so that it may RC be calculated；Pass through the temperature of platinum resistance itself and resistance
Relationship can obtain the fuel oil temperature value surveyed at this time；Operational amplifier in circuit is used to amplify the voltage difference of electric bridge output
Value, analog-digital converter be used to convert amplified voltage difference to CPU that digital quantity Data2 is sent in oil mass counting circuit into
Row resolves.The present invention can measure the temperature of the fuel oil in fuel tank by the setting of temperature measuring circuit in real time, and pass through mould
The voltage difference that operational amplifier amplifies is converted digital quantity Data2 by number converter, so that the temperature of temperature measuring circuit measurement
Degree is accurate, provides accurate numerical value for digital measuring circuit, it is ensured that measurement it is accurate.
In order to preferably realize the present invention, further, the oil measurement circuit is turned by digital electric bridge chip, digital-to-analogue
The measurement of parallel operation realization capacitance；Digital electric bridge chip can directly be converted capacitance signal by the digital balance algorithm of CPU
For corresponding digital quantity, CPU obtains current fuel level value by being resolved to the digital quantity.By the way that capacitor is believed
Number it is converted into digital quantity, guarantees that the oil mass in the current fuel tank measured is accurate, it is ensured that the measurement of oil mass counting circuit is accurate.
In order to preferably realize the present invention, further, the PROBE_LO and PROBE_HI two of the digital electric bridge chip
A pin connects the two poles of the earth of measurement capacitor respectively；The digital balance that the measurement capacitance signal can be passed through CPU by digital electric bridge chip
Algorithm is converted directly into corresponding digital quantity Data1, i.e. data on 12 signal wires of digital analog converter, indicates equivalent capacity
Value.
In use, two pole pipes of the extremely Capacitor-type Fuel Quantity Sensor of the two of the capacitor pass through number to the present invention
Two pins of PROBE_LO and PROBE_HI of word electric bridge chip are separately connected the two-stage of capacitor, the digital analog converter 12 letters
Data on number line indicate equivalent capacitance value, will measure capacitance signal by digital electric bridge chip and be calculated by the digital balance of CPU
Method is converted directly into corresponding digital quantity Data1.The setting that circuit is tested by oil mass, can measure the combustion in fuel tank in real time
The volume of oil, and digital quantity Data1 is converted for capacitance by digital electric bridge chip, so that the body of oil mass test circuit measuring
Product is accurate, provides accurate numerical value for digital measuring circuit, it is ensured that measurement it is accurate.
In order to preferably realize the present invention, further, after the CPU of the oil mass counting circuit obtains Data1, by it
It is converted into current fuel liquid level value H, by inquiring the H-V curve being stored in advance in CPU, obtains current fuel bulk
V.The volume for going out current fuel tank intermediate fuel oil by the H-V curve prestored in CPU, it is ensured that the volume of the fuel oil of measurement is accurate.
In order to preferably realize the present invention, further, the oil mass counting circuit includes CPU, analog-digital converter, RS-
422A communication chip；By resolving digital quantity corresponding to capacitance, the volume of fuel oil is obtained；It is defeated to resolve analog-digital converter simultaneously
Temperature voltage value out obtains temperature information, and then obtains fuel density information；Finally calculated by the relationship of volume and density
Fuel quantity value, and the oil mass value is sent by RS-422A communication chip to host computer.
The present invention converts Data1 and Data2 to by CPU the volume V and the corresponding density of fuel oil Current Temperatures of fuel oil
ρ, accurately measures the quality of fuel oil under Current Temperatures, and by the fuel oil quality measured by RS-422A communication chip send to
Host computer timely refuels into fuel tank so that the fuel oil in fuel tank is monitored in real time.
Beneficial effects of the present invention:
(1) oil measurement circuit is used for real-time measurement capacitance present formula fuel-quantity transducer capacitance C collected；Temperature measurement
Circuit, the temperature T for real-time measurement current fuel；Oil mass counting circuit, by by oil measurement circuit capacitor collected
Signal C resolves to obtain the liquid level value H of current fuel tank, obtains current fuel tank in conjunction with height-volume curve of fuel tank itself
Oil mass volume V.The present invention measures fuel oil by way of with temperature-compensating, avoids fuel oil density at different temperature
Difference caused by measurement error, it is ensured that the amount of fuel measured be exact value, improve use scope of the invention.
(2) temperature measuring circuit realizes temperature measurement by Wheatstone bridge and operational amplifier；By Hui Sitong
After the voltage value amplification of electric bridge output, CPU acquires the voltage by analog-digital converter, and the temperature of current fuel is obtained after resolving
Value.The present invention enables temperature measuring circuit to measure the real time temperature of fuel oil, passes through temperature by the setting of temperature sensor
The temperature analog signal measured is converted digital signal by measuring circuit, and digital signal is transferred in digital measuring circuit,
Oil measurement is accurately carried out realize under condition of different temperatures, and be widely used in capacitance-type fuel quantity test have preferable practical
Property.
(3) the oil measurement circuit realizes the measurement of capacitance by digital electric bridge chip, digital analog converter；Digital electricity
Capacitance signal can be converted directly into corresponding digital quantity by the digital balance algorithm of CPU by bridge chip, and CPU passes through to the number
Word amount is resolved to obtain current fuel level value.By converting digital quantity for capacitance signal, guarantee to measure works as
Oil mass in preceding fuel tank is accurate, it is ensured that the measurement of oil mass counting circuit is accurate.
(4) the oil mass counting circuit includes CPU, analog-digital converter, RS-422A communication chip；By resolving capacitance
Corresponding digital quantity obtains the volume of fuel oil；The temperature voltage value for resolving analog-digital converter output simultaneously obtains temperature information,
And then obtain fuel density information；Fuel quantity value is finally calculated by the relationship of volume and density, and the oil mass value is passed through
RS-422A communication chip is sent to host computer.The present invention converts Data1 and Data2 to by CPU the volume V and fuel oil of fuel oil
The corresponding density p of Current Temperatures accurately measures the quality of fuel oil under Current Temperatures, and the fuel oil quality measured is passed through
RS-422A communication chip is sent to host computer, so that the fuel oil in fuel tank is monitored in real time, is timely refueled into fuel tank.
Detailed description of the invention
Fig. 1 is traditional fuel-quantity transducer basic structure block diagram；
Fig. 2 is digital type oil mass sensor basic structure block diagram；
Fig. 3 is the digital type oil mass sensor basic structure block diagram with temperature-compensating；
Fig. 4 is temperature measuring circuit schematic illustration；
Fig. 5 is oil measurement circuit theory schematic diagram；
Fig. 6 A and Fig. 6 B are that oil mass calculates circuit theory schematic diagram.
Specific embodiment
Embodiment 1:
Fig. 1, Fig. 2 are the prior art, are improved on the basis of existing technology as shown in Figure 3, are provided a kind of with temperature benefit
The high-precision fuel quantity measurement method repaid, comprising: oil measurement circuit is used for real-time measurement capacitance present formula fuel-quantity transducer
Capacitance C collected；Temperature measuring circuit, the temperature T for real-time measurement current fuel；Oil mass counting circuit, pass through by
Oil measurement circuit capacitance signal C collected resolves to obtain the liquid level value H of current fuel tank, in conjunction with the height of fuel tank itself
Degree-volume curve obtains the oil mass volume V of current fuel tank.
The present invention converts current fuel fuel level for capacitance in use, by oil mass counting circuit
Value H obtains the oil mass volume V of current fuel tank in conjunction with height-volume curve of fuel tank itself；Temperature is obtained by oil mass counting circuit
T is spent, the density value ρ of fuel oil under Current Temperatures is obtained in conjunction with T- ρ curve, the real-time oil quantity of current fuel tank is calculated by M=V* ρ.
The present invention measures fuel oil by way of with temperature-compensating, avoids fuel oil density at different temperature
Measurement error caused by difference, it is ensured that the amount of fuel measured is exact value, improves use scope of the invention.
Embodiment 2:
The present embodiment advanced optimizes on the basis of embodiment 1, and as shown in Fig. 4 A- Fig. 4 C, the temperature measuring circuit passes through
Wheatstone bridge and operational amplifier realize temperature measurement；After the voltage value amplification of Wheatstone bridge output, CPU passes through
Analog-digital converter acquires the voltage, and the temperature value of current fuel is obtained after resolving；The TEMP and TEMP_ of the temperature measuring circuit
GND distinguishes the both ends of jointing temp sensor, and R1, R2, R3, RP1 and measurement platinum resistance RC of the temperature measuring circuit are constituted
4 bridge arms of electric bridge；When RC resistance value is equal to the resistance value of RP1+ R3, electric bridge reaches equilibrium state, and bridge output voltage is at this time
0, i.e., operational amplifier 2, the voltage difference between 3 feet are 0；Operational amplifier in circuit is used to amplify the voltage difference of electric bridge output
Value, analog-digital converter be used to convert amplified voltage difference to CPU that digital quantity Data2 is sent in oil mass counting circuit into
Row resolves.
In use, when RC resistance value is equal to the resistance value of RP1+ R3, electric bridge reaches equilibrium state to the present invention, at this time
Bridge output voltage is 0, i.e., operational amplifier 2, the voltage difference between 3 feet are 0；Platinum resistance RC resistance value with the variation of temperature and
The voltage value of variation, electric bridge output directly reacts the difference between RC resistance value and the resistance value of RP1+ R3, and this variation is linear
's；In the case where the resistance value of known RP1+ R3, so that it may RC be calculated；Pass through the temperature of platinum resistance itself and resistance
Relationship can obtain the fuel oil temperature value surveyed at this time；Operational amplifier in circuit is used to amplify the voltage difference of electric bridge output
Value, analog-digital converter be used to convert amplified voltage difference to CPU that digital quantity Data2 is sent in oil mass counting circuit into
Row resolves.The present invention can measure the temperature of the fuel oil in fuel tank by the setting of temperature measuring circuit in real time, and pass through mould
The voltage difference that operational amplifier amplifies is converted digital quantity Data2 by number converter, so that the temperature of temperature measuring circuit measurement
Degree is accurate, provides accurate numerical value for digital measuring circuit, it is ensured that measurement it is accurate.By the setting of temperature sensor, so that
Temperature measuring circuit can measure the real time temperature of fuel oil, be converted the temperature analog signal measured to by temperature measuring circuit
Digital signal, and digital signal is transferred in digital measuring circuit, it realizes and accurately carries out oil mass survey under condition of different temperatures
Amount, and it is widely used in capacitance-type fuel quantity test, there is preferable practicability.
The other parts of the present embodiment are same as Example 1, and so it will not be repeated.
Embodiment 3:
The present embodiment advanced optimizes on the basis of embodiment 2, and as shown in Fig. 5 A, Fig. 5 B, the oil measurement circuit passes through
Digital electric bridge chip, digital analog converter realize the measurement of capacitance；The number that capacitance signal can be passed through CPU by digital electric bridge chip
Word balanced algorithm is converted directly into corresponding digital quantity, and CPU obtains current fuel level by being resolved to the digital quantity
Height value；Two pins of PROBE_LO and PROBE_HI of the digital electric bridge chip connect the two poles of the earth of measurement capacitor respectively；Number
The measurement capacitance signal can be converted directly into corresponding digital quantity Data1 by the digital balance algorithm of CPU by electric bridge chip,
Data i.e. on 12 signal wires of digital analog converter indicate equivalent capacitance value.
In use, two pole pipes of the extremely Capacitor-type Fuel Quantity Sensor of the two of the capacitor pass through number to the present invention
Two pins of PROBE_LO and PROBE_HI of word electric bridge chip are separately connected the two-stage of capacitor, the digital analog converter 12 letters
Data on number line indicate equivalent capacitance value, will measure capacitance signal by digital electric bridge chip and be calculated by the digital balance of CPU
Method is converted directly into corresponding digital quantity Data1.The setting that circuit is tested by oil mass, can measure the combustion in fuel tank in real time
The volume of oil, and digital quantity Data1 is converted for capacitance by digital electric bridge chip, so that the body of oil mass test circuit measuring
Product is accurate, provides accurate numerical value for digital measuring circuit, it is ensured that measurement it is accurate.
The present invention guarantees that the oil mass in the current fuel tank measured is accurate by converting digital quantity for capacitance signal, it is ensured that
The measurement of oil mass counting circuit is accurate.
The other parts of the present embodiment are identical as above-described embodiment 2, and so it will not be repeated.
Embodiment 4:
The present embodiment advanced optimizes on the basis of embodiment 3, and as shown in Fig. 6 A, Fig. 6 B, the oil mass counting circuit includes
CPU, analog-digital converter, RS-422A communication chip；By resolving digital quantity corresponding to capacitance, the volume of fuel oil is obtained；Together
When resolve the temperature voltage value of analog-digital converter output and obtain temperature information, and then obtain fuel density information；Finally by volume
Fuel quantity value is calculated with the relationship of density, and the oil mass value is sent by RS-422A communication chip to host computer.
The present invention converts Data1 and Data2 to by CPU the volume V and the corresponding density of fuel oil Current Temperatures of fuel oil
ρ, accurately measures the quality of fuel oil under Current Temperatures, and by the fuel oil quality measured by RS-422A communication chip send to
Host computer timely refuels into fuel tank so that the fuel oil in fuel tank is monitored in real time.
The other parts of the present embodiment are same as Example 3, and so it will not be repeated.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to
According to technical spirit any simple modification to the above embodiments of the invention, equivalent variations, protection of the invention is each fallen within
Within the scope of.
Claims (7)
1. a kind of high-precision fuel quantity measurement method with temperature-compensating characterized by comprising oil measurement circuit,
For real-time measurement capacitance present formula fuel-quantity transducer capacitance C collected；Temperature measuring circuit, it is current for real-time measurement
The temperature T of fuel oil；Oil mass counting circuit, by resolving oil measurement circuit capacitance signal C collected to obtain current fuel tank
Liquid level value H, obtain the oil mass volume V of current fuel tank in conjunction with height-volume curve of fuel tank itself.
2. a kind of high-precision fuel quantity measurement method with temperature-compensating according to claim 1, which is characterized in that
The temperature measuring circuit realizes temperature measurement by Wheatstone bridge and operational amplifier；The electricity that Wheatstone bridge is exported
After the amplification of pressure value, CPU acquires the voltage by analog-digital converter, and the temperature value of current fuel is obtained after resolving.
3. a kind of high-precision fuel quantity measurement method with temperature-compensating according to claim 2, which is characterized in that
The both ends of TEMP and TEMP_GND the difference jointing temp sensor of the temperature measuring circuit, the R1 of the temperature measuring circuit,
R2, R3, RP1 and measurement platinum resistance RC constitute 4 bridge arms of electric bridge；When RC resistance value is equal to the resistance value of RP1+ R3, electric bridge reaches
To equilibrium state, bridge output voltage is 0 at this time, i.e., operational amplifier 2, the voltage difference between 3 feet are 0；Operation in circuit
Amplifier is used to amplify the voltage difference of electric bridge output, and analog-digital converter is used to convert digital quantity for amplified voltage difference
The CPU that Data2 is sent in oil mass counting circuit is resolved.
4. a kind of high-precision fuel quantity measurement method with temperature-compensating according to claim 1, which is characterized in that
The oil measurement circuit realizes the measurement of capacitance by digital electric bridge chip, digital analog converter；Digital electric bridge chip can
Capacitance signal is converted directly into corresponding digital quantity by the digital balance algorithm of CPU, CPU is by solving the digital quantity
Calculation obtains current fuel level value.
5. a kind of high-precision fuel quantity measurement method with temperature-compensating according to claim 4, which is characterized in that
Two pins of PROBE_LO and PROBE_HI of the digital electric bridge chip connect the two poles of the earth of measurement capacitor respectively；Digital electric bridge chip
The measurement capacitance signal can be converted directly into corresponding digital quantity Data1 by the digital balance algorithm of CPU, i.e. digital-to-analogue turns
Data on 12 signal wires of parallel operation indicate equivalent capacitance value.
6. a kind of high-precision fuel quantity measurement method with temperature-compensating according to claim 5, which is characterized in that
After the CPU of the oil mass counting circuit obtains Data1, it is translated into current fuel liquid level value H, it is preparatory by inquiring
The H-V curve being stored in CPU obtains current fuel bulk V.
7. a kind of high-precision fuel quantity measurement method with temperature-compensating according to claim 1 or 6, feature exist
In the oil mass counting circuit includes CPU, analog-digital converter, RS-422A communication chip；By resolving corresponding to capacitance
Digital quantity obtains the volume of fuel oil；The temperature voltage value for resolving analog-digital converter output simultaneously obtains temperature information, and then obtains
Fuel density information；Fuel quantity value is finally calculated by the relationship of volume and density, and the oil mass value is led to by RS-422A
News chip is sent to host computer.
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| CN110153032A (en) * | 2019-04-19 | 2019-08-23 | 山东科技大学 | Bottled liquid level intelligent measurement device for eliminating |
| CN110501948A (en) * | 2019-08-23 | 2019-11-26 | 大陆汽车车身电子系统（芜湖）有限公司 | A method of the data of the acquisition resistance sensor for electronic device |
| CN110887544A (en) * | 2019-11-28 | 2020-03-17 | 四川泛华航空仪表电器有限公司 | Combined type fuel sensor |
| CN112325979A (en) * | 2020-10-30 | 2021-02-05 | 中国航空工业集团公司西安航空计算技术研究所 | System and method for dynamically regulating signals of closed-loop control multi-channel capacitive oil mass sensor |
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| CN114046854A (en) * | 2021-11-10 | 2022-02-15 | 四川泛华航空仪表电器有限公司 | Temperature compensation method of aircraft fuel oil measurement system based on duty ratio detection |
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| CN110153032A (en) * | 2019-04-19 | 2019-08-23 | 山东科技大学 | Bottled liquid level intelligent measurement device for eliminating |
| CN110501948A (en) * | 2019-08-23 | 2019-11-26 | 大陆汽车车身电子系统（芜湖）有限公司 | A method of the data of the acquisition resistance sensor for electronic device |
| CN110501948B (en) * | 2019-08-23 | 2022-05-17 | 大陆汽车车身电子系统（芜湖）有限公司 | Method for collecting data of resistance type sensor for electronic device |
| CN110887544A (en) * | 2019-11-28 | 2020-03-17 | 四川泛华航空仪表电器有限公司 | Combined type fuel sensor |
| CN112325979A (en) * | 2020-10-30 | 2021-02-05 | 中国航空工业集团公司西安航空计算技术研究所 | System and method for dynamically regulating signals of closed-loop control multi-channel capacitive oil mass sensor |
| CN112763021A (en) * | 2020-12-29 | 2021-05-07 | 中国航空工业集团公司西安飞机设计研究所 | Calibration-free method for fuel oil measuring system |
| CN112763021B (en) * | 2020-12-29 | 2024-01-16 | 中国航空工业集团公司西安飞机设计研究所 | Calibration-free method for fuel measurement system |
| CN114046854A (en) * | 2021-11-10 | 2022-02-15 | 四川泛华航空仪表电器有限公司 | Temperature compensation method of aircraft fuel oil measurement system based on duty ratio detection |
| CN114047093A (en) * | 2021-11-11 | 2022-02-15 | 四川泛华航空仪表电器有限公司 | Oil quantity measuring and converting circuit and working method thereof |
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