CN104344862B - The detection method of FCM10A type fuel consumption meters - Google Patents
The detection method of FCM10A type fuel consumption meters Download PDFInfo
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- CN104344862B CN104344862B CN201410522144.3A CN201410522144A CN104344862B CN 104344862 B CN104344862 B CN 104344862B CN 201410522144 A CN201410522144 A CN 201410522144A CN 104344862 B CN104344862 B CN 104344862B
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Abstract
A kind of detection method of FCM10A types fuel consumption meter, comprises the following specific steps that：1) connecting detection circuit；2) the output signal type of established standards signal generator；3) frequency range and measurement points of set output signal are selected；4) fuel flow data are gathered；5) validity of gathered data is judged；6) record and calculate the relative error of FCM10A type fuel consumption meters；(7) testing result is evaluated：If relative error≤0.2% of gained, assert that the precision of tested FCM10A type fuel consumption meters disclosure satisfy that the requirement in actual production to Rate of Fuel Consumption of Diesel measurement, its measurement result is accurately and securely；It is otherwise anti-right.The present invention can be detected FCM10A type fuel consumption meters, judge whether its precision meets to produce needs, the accuracy and reliability that the measurement of intermediate fuel oil consumption rate is debugged for host provides sound assurance, at the same time practicable method is provided for the batch detection of FCM10A type fuel consumption meters, it is convenient, efficient, reliable that the detection method has the advantages that, can be used in the detection to FCM10A type fuel consumption meters.
Description
Technical field
The present invention relates to the processing of marine diesel, more particularly to a kind of inspection of diesel engine for ship FCM10A type fuel consumption meters
Survey method, belongs to Diesel Engine Technique Field.
Background technology
Fuel consumption is to examine an important index of marine diesel economic performance, continuous with cost of transportation
Rise, people increasingly pay close attention to the fuel consumption of diesel engine, because can judge marine diesel by fuel consumption
Economic performance, it is closely bound up with reducing the cost of transportation in the ship period of service.In commissioning process, if the fuel oil of diesel engine disappears
Consumption rate can then cause the diesel engine can not be run by the examination of classification society, therefore in diesel engine beyond the upper limit of desired value
During, it is necessary to according to technical requirements, the situation for specifying fuel consumption under operating mode is measured and calculated.
FCM10A type fuel consumption meters are to need to carry out the diesel engine of debugging in the instrument of fuel consumption detection for production, so
And the fuel consumption data obtained by its survey calculation are found during the use of the fuel consumption meter and there are distortion phenomenon.In order to
Ensure the accuracy and authenticity of Rate of Fuel Consumption of Diesel measured, it is extremely to be necessary that reliable detection is carried out to fuel consumption meter
's.FCM10A type fuel consumption meters are made of data acquisition module and computing module, the import and export traffic channel on data acquisition module
By the mass flowmenter of data cable connection installation on a diesel engine, while the flow signal of two mass flowmenters is gathered, should
Fuel oil quality of the flow signal with consuming passes through setting measurement time and the work(of diesel engine there are the correspondence of 0.01kg/Hz
Rate, computing module can draw the Rate of Fuel Consumption of Diesel under each operating mode.
The content of the invention
It is an object of the invention to for data are detected existing for existing fuel consumption meter, there is a phenomenon where distortion, there is provided a kind of
The detection method of FCM10A type fuel consumption meters, is detected the fuel consumption meter of the model, it is ensured that measures institute in production process afterwards
Obtain the accuracy and reliability of fuel consumption data.
The technical solution that the present invention solves its technical problem is as follows：
A kind of detection method of FCM10A types fuel consumption meter, it is comprised the following steps that：
1) connecting detection circuit
The output port of reference signal generator is connected with the terminal of the flowmeter passage of the FCM10A types fuel consumption meter,
And the FCM10A types fuel consumption meter and computer are connected, fuel consumption measurement software is installed in the computer；
2) the output signal type of established standards signal generator
The type for selecting the output signal of the reference signal generator is frequency, and waveform is square wave, the Gao Ping of the square wave
Voltage is 5V, and low ordinary telegram pressure is 0V；
3) frequency range and measurement points of set output signal are selected
The frequency quantity limit scope of selected reference signal generator output signal is 2Hz~200Hz, and scope is limited in the frequency quantity
Interior selected measurement point, and two limits of upper and lower bound of frequency quantity limit scope must be included in selected measurement point；
4) fuel flow data are gathered
Predetermined main engine power and flow count number are inputted in computer, the setting measurement time is 3min, in standard signal
A standard frequency in the selected measurement point is set on generator and exports the output signal of the standard frequency, it is to be output steady
The data acquisition of fuel flow is carried out after fixed, obtains the real-time curve of inlet flow rate and rate of discharge；
5) validity of gathered data is judged
Observation of steps 4) survey after fuel flow real-time curve moves towards straight and whether occur substantially fluctuating, if the fuel flow
Real-time curve moves towards straight and terminates no fluctuation to time of measuring afterwards, then gathered data is effective, and records gathered data；If the fuel oil
Flow real-time curve occurs fluctuating and is accompanied by multiple wave crests before after moving towards straight to time of measuring terminating, then gathered data without
Effect, stops measurement, the output of standard of closure signal generator, whether the connection of detection cable and system software are normal, wait immediately
After one minute, repeat above step 4) data acquisition, untill gathered data is effective, and record gathered data；
6) record and calculate the relative error of FCM10A type fuel consumption meters
In all selected measurement points, repeating said steps 4) and 5), obtain and record corresponding to each selected measurement point
Frequency under fuel flow real-time curve；After the completion of data acquisition, according to the fuel flow of each selected measurement point in computer
Real-time curve, the actual measurement fuel oil quality under the frequency corresponding to the selected measurement point is obtained by integral and calculating；Pass through following public affairs
Formula calculates the theoretical fuel oil quality of each selected measurement point：
M=0.01 × f × t × 60,
In formula, m- selectes the theoretical fuel oil quality of measurement point, f- frequencies (Hz), t- times (s)；
Calculate respectively according to following equation and obtain the opposite of the fuel oil quality under the frequency corresponding to each selected measurement point
Error：
(actual measurement fuel oil quality-theory fuel oil quality)/theoretical fuel oil quality × 100%；
(7) testing result is evaluated
If relative error≤0.2% obtained by step 6), assert that the precision of tested FCM10A type fuel consumption meters disclosure satisfy that
To the requirement of Rate of Fuel Consumption of Diesel measurement in actual production, its measurement result is accurately and securely；Conversely, then assert quilt
Survey the requirement that the precision of FCM10A type fuel consumption meters can not meet Rate of Fuel Consumption of Diesel to be measured in actual production, it measures knot
Fruit is inaccurate and unreliable.
Further, the precision of the reference signal generator is 0.2 grade, model Agilent 33210A.
Further, in the step 3), selected measurement point is uniformly distributed in the range of selected frequency quantity limit, its
Quantity is no less than 8.
Compared with prior art, the invention has the advantages that：
The detection method can be detected FCM10A type fuel consumption meters, judge whether its precision meets to produce needs,
The accuracy and reliability that the measurement of intermediate fuel oil consumption rate is debugged for host provides sound assurance, while is FCM10A type oil consumption
The batch detection of instrument provides practicable method.Meanwhile reference is provided for the conventional detection of other model fuel consumption meters, and
Technical characterstic according to different fuel consumption meters can be correspondingly improved this detection method, that the detection method has is convenient,
Efficiently, the advantages of reliable.
Brief description of the drawings
Fig. 1 is the schematic diagram of the present invention.
Fig. 2 is one of step schematic diagram of the present invention.
Fig. 3 is the two of step schematic diagram of the present invention.
Fig. 4 is the schematic diagram of the present invention effectively gathered data.
Fig. 5 is the schematic diagram of invalidated acquisitions data of the present invention.
Embodiment
The present invention chooses suitable reference signal generator, has formulated height according to the technical characteristic of FCM10A type fuel consumption meters
Imitate convenient detection method, it is therefore intended that be the routine being periodically detected with the fuel consumption meter of other models of FCM10A type fuel consumption meters
Detection provides effective detection foundation.
The detection side of FCM10A types fuel consumption meter of the present invention is further illustrated by the following examples and with reference to attached drawing
Method, but be not intended to limit the protection scope of the present invention.
Referring to Fig. 2, the detection method of FCM10A types fuel consumption meter of the present invention comprises the following specific steps that：
1) connecting detection circuit
Referring to Fig. 1, by precision it is 0.2 grade with data cable, the reference signal generator of model Agilent 33210A
Output (Output) port, the terminal 11 (+) with the flowmeter intake channel of FCM10A type fuel consumption meters, 12 (-) respectively, flow
Terminal 13 (+), 14 (-) connection of exit passageway are counted, FCM10A types fuel consumption meter and computer is connected with USB cable, pacifies in the computer
Equipped with fuel consumption measurement software.
2) the output signal type of established standards signal generator
After confirming that all cable connections are intact, the switch of reference signal generator is opened, selection signal type is frequency
(Frequency), waveform is square wave (Square), and the Kopin voltage (High level) for setting square wave is 5V, and low ordinary telegram pressure is
(Low level)0V。
3) frequency range and measurement points of set output signal are selected
The amount limit scope of the frequency of selected reference signal generator output signal is 2Hz~200Hz；In selected frequency quantity
Measurement point is selected in the range of limit, selected measurement point should be uniformly distributed in the range of the selected frequency quantity limit, selected measurement
The general upper and lower bound two for being no less than 8 points, and frequency quantity limit scope must being included in selected measurement point of the quantity of point
Limit, i.e., selected measurement point must include 2Hz and 200Hz.
4) fuel flow data are gathered
Referring to Fig. 2, opening the interface of fuel consumption measurement on computer, new measurement machine is created, intactly writes host letter
Breath and fuel oil information, measure measurement pattern in option and select succinct pattern, power input mode, which is elected as, to be manually entered, and flow counts
Measure as double fluid gauge.
Press and enter succinct pattern measure interface after " definite " button, such as Fig. 3 sets predetermined main engine power, during measurement
Between be 3min；
A standard frequency in the selected measurement point is set on reference signal generator, " Output " is pressed and presses
Button, exports the output signal of the standard frequency, and after stabilization to be output, " the starting to measure " pressed in fuel consumption meter measure interface is pressed
Button, the data acquisition of fuel flow is carried out by standard data acquisition module, obtains the real-time song of inlet flow rate and rate of discharge
Line, while pay attention to observing the change of the real-time curve.
5) validity of gathered data is judged
Observation of steps 4) survey after fuel flow real-time curve moves towards straight and whether occur substantially fluctuating, if the fuel flow
Real-time curve moves towards straight and terminates no fluctuation to time of measuring afterwards, as shown in figure 4, then gathered data is effective, and records collection number
According to；If the fuel flow real-time curve occurs fluctuating and is accompanied by multiple wave crests before after moving towards straight to time of measuring terminating,
Gathered data is invalid, stops measurement immediately, and the output of standard of closure signal generator, whether the connection of detection device cable is intact,
System software whether normal operation, wait one minute after, press " Output " button on reference signal generator again, export
The output signal of the standard frequency, repeat above step 4) data acquisition, untill gathered data is effective, and record
Gathered data.
6) record and calculate the relative error of FCM10A type fuel consumption meters
In all selected measurement points, repeating said steps 4) and 5), obtain and record corresponding to each selected measurement point
Frequency under fuel flow real-time curve；
After the completion of the data acquisition of all selected measurement points, open the measurement in computer and record and carried out such as in computer
Lower calculating：According to the fuel flow real-time curve of each selected measurement point, obtained by integral and calculating corresponding to the selected measurement point
Frequency under actual measurement fuel oil quality；
Since the relation of fuel oil quality and frequency is 0.01kg/Hz, each selected survey can be calculated by following equation
Measure the theoretical fuel oil quality m of point：
M=0.01 × f × t × 60, in formula, f- frequencies (Hz), the t- times (s)；
Calculate respectively according to following equation and obtain the opposite of the fuel oil quality under the frequency corresponding to each selected measurement point
Error：
(actual measurement fuel oil quality-theory fuel oil quality)/theoretical fuel oil quality × 100%.
(7) testing result is evaluated
If relative error≤0.2% obtained by step 6), assert that the precision of tested FCM10A type fuel consumption meters disclosure satisfy that
To the requirement of Rate of Fuel Consumption of Diesel measurement in actual production, its measurement result is accurately and securely；Conversely, then assert quilt
Survey the requirement that the precision of FCM10A type fuel consumption meters can not meet Rate of Fuel Consumption of Diesel to be measured in actual production, it measures knot
Fruit is inaccurate and unreliable.
The accuracy of measurement to fuel consumption and reliable during detection method of the present invention is submitted for host debugging
Property provides sound assurance, while the detection for FCM10A type fuel consumption meter batches provides practicable method.In addition, this
Invention also provides reference for the conventional detection of the fuel consumption meter of other models, so as to the technical characterstic pair according to different fuel consumption meters
The detection method is correspondingly improved, this detection method is flexible and changeable and efficient, will certainly be in the detection process of fuel consumption meter
In play a multiplier role.
Claims (3)
1. a kind of detection method of FCM10A types fuel consumption meter, it is characterised in that the detection method comprises the following steps that：
1) connecting detection circuit
The output port of reference signal generator is connected with the terminal of the flowmeter passage of the FCM10A types fuel consumption meter, and
The FCM10A types fuel consumption meter and computer are connected, fuel consumption measurement software is installed in the computer；
2) the output signal type of established standards signal generator
The type for selecting the output signal of the reference signal generator is frequency, and waveform is square wave, the Kopin voltage of the square wave
For 5V, low ordinary telegram pressure is 0V；
3) frequency range and measurement points of set output signal are selected
The frequency quantity limit scope of selected reference signal generator output signal is 2Hz~200Hz, is selected in the range of frequency quantity limit
Determine measurement point, and two limits of upper and lower bound of frequency quantity limit scope must be included in selected measurement point；
4) fuel flow data are gathered
Predetermined main engine power and flow count number are inputted in computer, the setting measurement time is 3min, is occurred in standard signal
A standard frequency in the selected measurement point is set on device and exports the output signal of the standard frequency, after stabilization to be output
The data acquisition of fuel flow is carried out, obtains the real-time curve of inlet flow rate and rate of discharge；
5) validity of gathered data is judged
Observation of steps 4) survey after fuel flow real-time curve moves towards straight and whether occur substantially fluctuating, if the fuel flow is real-time
Curve moves towards straight and terminates no fluctuation to time of measuring afterwards, then gathered data is effective, and records gathered data；If the fuel flow
Real-time curve occurs fluctuating and is accompanied by multiple wave crests before after moving towards straight to time of measuring terminating, then gathered data is invalid, stands
Stop measurement, the output of standard of closure signal generator, whether the connection of detection cable and system software are normal, wait one minute
Afterwards, repeat above step 4) data acquisition, untill gathered data is effective, and record gathered data；
6) record and calculate the relative error of FCM10A type fuel consumption meters
In all selected measurement points, repeating said steps 4) and 5), obtain and record the frequency corresponding to each selected measurement point
Fuel flow real-time curve under rate；It is real-time according to the fuel flow of each selected measurement point in computer after the completion of data acquisition
Curve, the actual measurement fuel oil quality under the frequency corresponding to the selected measurement point is obtained by integral and calculating；Pass through following equation meter
Calculate the theoretical fuel oil quality of each selected measurement point：
M=0.01kg/Hz × f × t × 60,
In formula, m- selectes the theoretical fuel oil quality of measurement point, f- frequencies, its unit is Hz, and the t- times, its unit is s；
Calculate respectively according to following equation and obtain the relative error of the fuel oil quality under the frequency corresponding to each selected measurement point：
(actual measurement fuel oil quality-theory fuel oil quality)/theoretical fuel oil quality × 100%；
(7) testing result is evaluated
If relative error≤0.2% obtained by step 6), assert that the precision of tested FCM10A type fuel consumption meters disclosure satisfy that reality
To the requirement of Rate of Fuel Consumption of Diesel measurement in production, its measurement result is accurately and securely；Conversely, then assert tested
The precision of FCM10A type fuel consumption meters can not meet the requirement to Rate of Fuel Consumption of Diesel measurement, its measurement result in actual production
It is inaccurate and unreliable.
2. the detection method of FCM10A types fuel consumption meter according to claim 1, it is characterised in that the standard signal hair
The precision of raw device is 0.2 grade, model Agilent 33210A.
3. the detection method of FCM10A types fuel consumption meter according to claim 1, it is characterised in that in the step 3),
Selected measurement point is uniformly distributed in the range of selected frequency quantity limit, its quantity is no less than 8.
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| CN104931117B (en) * | 2015-06-23 | 2018-03-02 | 中国航空工业集团公司西安飞机设计研究所 | A kind of oil mass analogy method and oil mass simulation system |
| CN106248160A (en) * | 2016-08-29 | 2016-12-21 | 北汽福田汽车股份有限公司 | The detecting system of fuel flowmeter and detection method |
| CN107655551A (en) * | 2017-10-31 | 2018-02-02 | 潍柴动力股份有限公司 | A kind of caliberating device of quality formula fuel consumption meter |
| CN107944372B (en) * | 2017-11-17 | 2020-04-07 | 珠海市多泰吉智能技术有限公司 | Method and device for identifying signal validity and computer storage medium |
| CN109297569A (en) * | 2018-09-28 | 2019-02-01 | 潍柴动力股份有限公司 | A kind of scaling method and device of fuel consumption meter |
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