CN115576256A

CN115576256A - Airplane digital consumption meter detection method and system

Info

Publication number: CN115576256A
Application number: CN202211443344.0A
Authority: CN
Inventors: 钟循进
Original assignee: Hangyu Weichuang Technology Beijing Co ltd
Current assignee: Hangyu Weichuang Technology Beijing Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-01-06
Anticipated expiration: 2042-11-18
Also published as: CN115576256B

Abstract

The invention provides a method and a system for detecting an airplane digital consumption meter, which adopt a microcomputer technology to control pulse generation, voltage acquisition, power-on self-test, pulse measurement and virtual oscilloscope technology to acquire and detect pulses, have the characteristics of selecting detection contents and displaying the detection contents in real time by a keyboard and a touch screen, provide a fuel oil loop and a standard flow sensor according to a fuel oil driving device, can finish off-position detection of an airplane turbine flow sensor, display a preset detection interface to a user after the airplane digital consumption meter detection system is powered on, enable the user to input a corresponding selection instruction according to needs, and further execute related operations according to the selection instruction until a related detection processor is successfully called to obtain detection data required by the user. By applying the method, the comprehensiveness of the detection data of the airplane digital consumption meter detection system can be ensured.

Description

Airplane digital consumption meter detection method and system

Technical Field

The invention relates to the field of aviation instruments, in particular to a method and a system for detecting an aircraft digital consumption meter.

Background

The fuel system of the airplane is one of important onboard systems, and ensures that the airplane continuously supplies fuel with specified pressure and flow to an engine under various flight states. The consumption meter system is an important component of an aircraft fuel system and provides fuel consumption information to flight crew. If the device does not work normally, the flight personnel can not master the accurate information of fuel consumption, and the flight safety is directly endangered.

The existing aircraft consumption meter system has entered the stage of digital consumption meter system using computer technology and digital display. The digital consumption meter system of the airplane consists of an airplane digital fuel comprehensive flow meter indicator and an airplane turbine type flow sensor and is used for measuring and calculating to digitally display data such as instantaneous flow of fuel of an airplane engine, total consumption of airborne fuel, digital display surplus and the like. And determining the current endurance time of the airplane according to the data, and when the endurance time is less than a certain fixed value, sending an alarm indication by the digital fuel integrated flow meter indicator.

The consumption meter system of the existing airplane is adopted to measure various data of the airplane, and the current endurance condition of the airplane can be only judged according to the data. Therefore, the consumption meter system of the existing airplane is used for detection, and the detection data is single.

Disclosure of Invention

In view of this, the present invention provides a method and a system for an aircraft digital consumption meter, which can detect each data of the aircraft digital consumption meter and also detect each function and the performance of a related processor, so as to achieve comprehensiveness of the detected data.

The invention also provides a system for detecting the airplane digital consumption meter, which is used for ensuring the realization and the application of the method in practice.

An aircraft digital consumption meter detection method, comprising:

switching on a power supply, and displaying a preset first detection interface to a user, wherein the first detection interface comprises temperature data and a plurality of detection options;

when the temperature data is within a preset threshold value, if a first selection instruction input by the user at the first detection interface is received, determining a target detection option corresponding to the first selection instruction in each detection option, and determining target option information corresponding to the target detection option;

judging whether to call a preset detection processor corresponding to the target detection option or not according to the target option information;

if the target option information is called, determining target option data corresponding to the target option information, and loading the target option data to the preset detection processor to obtain each detection data corresponding to the current target detection option;

if not, displaying a second detection interface corresponding to the target detection option according to the target option information, and when receiving a second selection instruction input by the user on the second detection interface, repeatedly executing the operation until obtaining each detection data corresponding to the detection option corresponding to the current selection instruction;

and displaying the detection data to the user.

Optionally, the method further includes, after the power is turned on, before a preset first detection interface is displayed to a user:

calling a preset self-checking rule;

determining each target self-checking data according to the preset self-checking rule;

and switching power relays for each target self-checking data to realize self-checking of each target self-checking data.

The method described above, optionally, includes:

when the temperature data is not within a preset threshold value, receiving an adjusting instruction input by the user according to a preset temperature adjusting channel;

and adjusting the temperature data according to the adjusting instruction to obtain final temperature data within the preset threshold value.

Optionally, the method for determining whether to call a preset detection processor corresponding to the target detection option according to the target option information includes:

acquiring all detection interfaces and display logics corresponding to detection options of each detection interface;

finding out target display logics corresponding to the target detection options from all the display logics according to target option information corresponding to the target detection options;

and when the target display logic display is finished, starting to call a preset detection processor corresponding to the target detection option.

Optionally, the displaying, according to the target option information, a second detection interface corresponding to the target detection option includes:

and displaying a second detection interface corresponding to the target detection option according to the target display logic corresponding to the target detection option.

An aircraft digital consumption meter detection system comprising:

the device comprises a switching-on unit, a detection unit and a control unit, wherein the switching-on unit is used for switching on a power supply and displaying a preset first detection interface to a user, and the first detection interface comprises temperature data and a plurality of first detection options;

the determining unit is used for determining a target detection option corresponding to a first selection instruction in each detection option and determining target option information corresponding to the target detection option if the first selection instruction input by the user on the first detection interface is received when the temperature data is within a preset threshold;

the judging unit is used for judging whether to call a preset detection processor corresponding to the target detection option or not according to the target option information;

the loading unit is used for determining target option data corresponding to the target option information if the target option information is called, and loading the target option data to the preset detection processor to obtain each detection data corresponding to the current target detection option;

the repeating unit is used for displaying a second detection interface corresponding to the target detection option according to the target option information if the target detection option information is not called, and repeatedly executing the operation when a second selection instruction input by the user on the second detection interface is received until all detection data corresponding to the detection option corresponding to the current selection instruction are obtained;

and the display unit is used for displaying the detection data to the user.

The above system, optionally, further comprises:

the first calling subunit is used for calling a preset self-checking rule;

the determining subunit is used for determining each target self-checking data according to the preset self-checking rule;

and the switching subunit is used for switching the power relay of each target self-checking data so as to realize the self-checking of each target self-checking data.

The above system, optionally, comprises:

the receiving subunit is used for receiving an adjusting instruction input by the user according to a preset temperature adjusting channel when the temperature data is not within a preset threshold value;

and the adjusting subunit is used for adjusting the temperature data according to the adjusting instruction to obtain final temperature data within the preset threshold value.

The above system, optionally, the determining unit includes:

the acquisition subunit is used for acquiring all the detection interfaces and each display logic corresponding to each detection option of each detection interface;

the processing subunit is configured to find, according to target option information corresponding to the target detection option, a target display logic corresponding to the target detection option from all the display logics;

and the second calling subunit is used for starting to call the preset detection processor corresponding to the target detection option when the target display logic is displayed.

The above system, optionally, the repeating unit includes:

and the display subunit is used for displaying a second detection interface corresponding to the target detection option according to the target display logic corresponding to the target detection option.

Compared with the prior art, the invention has the following advantages: the method adopts microcomputer technology to control pulse generation, voltage acquisition, power-on self-test, pulse measurement and virtual oscilloscope technology to acquire and detect pulses, has the characteristics of selecting detection contents and displaying in real time by a keyboard and a touch screen, provides a fuel loop and a standard flow sensor according to a fuel driving device, can finish off-position detection of an aircraft turbine flow sensor, and displays a preset detection interface for a user after a digital consumption meter detection system of the aircraft is powered on, so that the user can input a corresponding selection instruction according to the requirement and further execute related operation according to the selection instruction until a related detection processor is successfully called to obtain detection data required by the user. The method can ensure the comprehensiveness of the detection data of the airplane digital consumption meter detection system.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic diagram of a system architecture of a digital consumption meter detection system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a digital consumption meter detector of the digital consumption meter detection system according to an embodiment of the present invention;

fig. 3 is a schematic diagram of another structure of the digital consumption meter detector of the digital consumption meter detecting system according to the embodiment of the invention;

fig. 4 is a schematic diagram of another structure of a digital consumption meter detector of the digital consumption meter detecting system according to the embodiment of the invention;

fig. 5 is a schematic structural diagram of a fuel driving apparatus of a digital consumption meter detecting system according to an embodiment of the present invention;

fig. 6 is a schematic diagram of another structure of a fuel driving apparatus of a digital consumption meter detecting system according to an embodiment of the present invention;

fig. 7 is a flowchart of an in-situ detection method of the digital consumption meter detection method according to the embodiment of the present invention;

fig. 8 is a flowchart of a method of off-site detecting a digital consumption meter according to an embodiment of the present invention;

fig. 9 is a flowchart of a method of detecting a digital consumption meter according to an embodiment of the present invention;

fig. 10 is a schematic diagram of another system architecture of a digital consumption meter detecting system according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In this application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions, and the terms "comprises", "comprising", or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The working principle of the existing airplane digital consumption meter system is as follows: when the aircraft engine works, fuel is pressurized by the fuel supply pump and is conveyed to the engine from the fuel tank through the aircraft turbine type flow sensor. When fuel flows through the airplane turbine type flow sensor, a turbine in the airplane turbine type flow sensor starts to rotate, a pulse signal is generated, and the pulse signal is transmitted to an airplane digital fuel comprehensive flow meter indicator. The digital fuel comprehensive flow meter indicator of the airplane measures and displays the instantaneous flow (kg/h), the total consumption flow (kg), the residual flow (kg) and the like of the fuel flowing through the turbine type flow sensor according to the repetition frequency of the pulse.

By way of background, only instantaneous fuel flow, total fuel consumption and other data of an aircraft engine can be detected and displayed by using a digital consumption meter system of an existing aircraft, and the current endurance time of the aircraft can be determined by the data. However, according to the digital consumption meter system, the obtained data are far from sufficient, and the flight safety of the airplane can be better guaranteed only by mastering sufficient data.

Therefore, the digital consumption meter system is upgraded on the basis of the digital consumption meter system of the existing airplane. The airplane digital consumption meter detection system comprises a digital consumption meter system detector and a fuel driving device, wherein the digital consumption meter system detector and the fuel driving device are respectively connected with corresponding detection processors in advance. When the aircraft digital consumption meter detection system is powered on, a preset detection interface is displayed to a user, so that the user can input a corresponding selection instruction according to needs, and further execute related operations according to the selection instruction until a related detection processor is successfully called, and detection data needed by the user is obtained. The data detected by the method is richer than that detected by using the existing digital consumption meter system of the airplane, the operation process is more convenient, and even a preset detection processor can be used for in-situ detection and off-site detection. The in-situ detection method can be used for the regular maintenance of the airplane and the performance detection of the digital consumption meter system; the off-position detection can be used for detecting the performance of a digital fuel integrated flow meter indicator for detaching the airplane and an onboard turbine flow sensor.

Referring to fig. 1, a digital consumption meter detection system provided by an embodiment of the present invention includes: a digital consumption meter system detector 101 and a fuel drive 102.

The digital consumption meter system detector 101 is used for instantaneous flow detection, total consumption flow detection, output voltage detection, alarm function detection, residual flow detection and register function detection of a digital fuel comprehensive flow meter indicator, and is used for in-situ detection of an output pulse signal waveform of an airplane turbine flow sensor;

the fuel oil driving device is a closed loop hydraulic system 102 and is used for detecting the deviation of pulse signal waveforms output by the turbine type flow sensor.

Referring to fig. 2, an architecture diagram of a digital consumption meter detector of the digital consumption meter detecting system according to the embodiment of the present invention includes: the device comprises a keyboard module 201, a control module 202, a display screen 203, a power conversion module 204, a temperature control module 205, a pulse generation module 206, a switch module 207 and a pulse measurement module 208. The output end of the keyboard module 201 is connected with the input end of the control module 202; the output end of the control module 203 is respectively connected with the input end of the pulse measurement module 208, the input end of the switch module 207, the input end of the pulse generation module 206, the input end of the temperature control module 205 and the input end of the display screen 203; the output end of the power conversion module 204 is respectively connected to the power supply end of the control module 202, the power supply end of the pulse measurement module 208, the power supply end of the switch module 207, the power supply end of the pulse generation module 206, and the power supply end of the temperature control module 205.

The keypad module 201 has vibration resistance of 1.5G, and may be a 16-key 4 × 4 metal keypad, which is made of 304 stainless steel and is provided with number keys and function keys for inputting measured functions and set values. The metal digital key keyboard is provided with digital keys and function keys which can be: 0-9 number keys and function keys such as ' return ', ' confirm ', ' turn up ', ' turn down ', ' start/clear ', and '.

The control module 202 may be a microcomputer with a 1.33GHz dual-core CPU (central processing unit), a 4GB memory, and a 128G hard disk. In the digital consumption meter system detector, a control module 102 is connected with a keyboard module 201 through an RS232 serial port, and the keyboard module 201 can input numerical values to the control module 202 for setting various parameters; the control module 202 can also control the pulse generation module 206 through the RS232 serial port to control the "start", "close" of pulse generation and the repetition frequency of pulses, for simulating standard flow during testing; the temperature control module 205 is connected with the control module 202 through an RS485 serial port, and is configured to measure the temperature inside the digital consumption meter system detector and display the temperature on the display screen 203 connected with the control module 202; the control module 202 controls the switch module 207 to collect the timing of each voltage through the RS485 serial port, and the control module 202 is connected with the pulse measurement module 208 through the USB serial port to transmit the waveform of the pulse of the turbine flow sensor collected by the pulse measurement module 208.

The display screen 203 is a touch screen and is used for displaying parameters and performing touch operation.

The power conversion module 204 is configured to convert a dc 28V power voltage input by a dc power supply into a dc 4.5V, dc 5V, and dc 12V stable power voltage. Converting the DC 28V power supply voltage into DC 4.5V power supply voltage, and supplying power to a register in the digital fuel oil comprehensive flow meter indicator; converting the DC 28V power supply voltage into DC 5V power supply voltage, and supplying power to the pulse measurement module 208 and a standard flow sensor respectively, wherein the standard flow sensor is positioned in the fuel oil driving device; the dc 28V power voltage is converted into dc 12V power voltage, which can supply power to the control module 202, the display 203 and the keyboard module 201. The working temperature of the power conversion module 204 can be preset to-30 ℃ to +85 ℃.

The dc power supply of the temperature control module 205 may be a dc 28V supply voltage. Referring to fig. 3, another schematic structural diagram of the digital consumption meter detector of the digital consumption meter detection system according to the embodiment of the present invention is specifically a schematic structural diagram of the temperature control module 205 of the digital consumption meter detector, where the temperature control module 205 includes: temperature measuring module 209, switch 210, heating module 211. The output end of the temperature measuring module 209 is connected with the input end of the switch 210, and the output end of the switch 210 is connected with the input end of the heating module 211.

Wherein, the temperature measuring module 209 adopts a temperature transmitter, so that the display screen 203 can display the temperature inside the digital consumption meter system detector; the switch 210 adopts a button switch and heats the inside of the detector of the digital consumption meter system in a manual mode; the warming module 211 employs a thermocouple for heating. Wherein, the temperature measuring range corresponding to the temperature measuring module 209 can be-50 ℃ to +150 ℃.

Referring to fig. 4, a further schematic structural diagram of the digital consumption meter detector of the digital consumption meter detection system according to the embodiment of the present invention is specifically a schematic structural diagram of the pulse generation module 206 of the digital consumption meter detector, where the pulse generation module 206 includes: the main control unit 213, the power supply unit 212, the communication unit 214 and the interface 215 may be used to simulate a pulse signal of a standard flow. The main control unit 213 is connected with the communication unit 214; the communication unit 214 is connected to the interface 215; the output end of the power supply unit 212 is connected to the input end of the main control unit 213 and the input end of the communication unit 214, and the input end of the main control unit 213 and the input end of the communication unit 214 are respectively corresponding power supply ports.

The main control unit 213 may adopt a 32-bit embedded microcontroller for generating a pulse signal; the power supply unit 212 includes: the positive linear low dropout regulator, the power management chip and the filter circuit are used for supplying power to the main control unit 213 and the communication unit 214; the communication unit 214 includes: the low-power-consumption transceiver for RS485 communication and RS422 communication, the RS232 communication low-voltage-difference transceiver and the conversion circuit are added with optical coupling isolation, so that the anti-interference can be realized; the interface 215 is used for data transmission, and specifically, the pulse generation module 206 may transmit the generated pulse signal simulating the standard flow rate to the pulse measurement module 208 through the interface 215.

For example, the pulse generation module simulates 4 paths of pulse signals with standard flow of 160Hz to 10kHz, and the main control unit adopts a 32-bit STM32F103RET6 embedded microcontroller for generating pulse signals with the amplitude of 5V +/-0.5V.

The switch module 207 can adopt 8 groups of power relays and is used for switching direct-current 28V power supply voltage input by an external direct-current power supply to the digital fuel oil comprehensive flow meter indicator, switching direct-current 5V power supply voltage input by the power supply conversion module 204 to the standard flow sensor, switching direct-current 5V power supply voltage output by the digital fuel oil comprehensive flow meter indicator, switching direct-current 4.5V power supply voltage output by a register battery of the digital fuel oil comprehensive flow meter indicator, switching direct-current 4.5V power supply voltage output by the power supply conversion module 204 to the digital fuel oil comprehensive flow meter indicator, and switching an input pulse channel of the pulse measurement module 208, and controlling the start-up self-check of the digital fuel oil consumption meter system detector; and switching the power relay according to the control instruction of the control module 202.

The pulse measurement module 208 may adopt a virtual oscilloscope, and is configured to collect pulse signals output by the pulse generation module 206, the turbine flow sensor, and a standard flow sensor in the fuel drive apparatus; the collected pulse repetition frequency and waveform are output to the control module 202 through the USB serial port. For example, the pulse repetition frequency and waveform measured by the pulse measurement module may be: 4 paths of pulses with the repetition frequency of 0Hz to 200MHz and the amplitude of 10mV to 1000V.

Referring to fig. 5, an architecture diagram of a fuel driving apparatus of a digital consumption meter detecting system according to an embodiment of the present invention is specifically an architecture diagram of a fuel driving apparatus, where the fuel driving apparatus includes: the device comprises a speed regulating valve 301, a fuel tank 302, a barometer 303, an oil drain valve 304, a fuel filling port 305, a vent valve 306, a liquid level valve 307, an oil pump 308, an oil filter 309, a standard flow sensor 310, a control box 311 and a pipeline. The oil tank 302 is provided with a speed regulating valve 301, an air pressure gauge 303, an oil drain valve 304, an oil filling port 305, a deflation valve 306 and a liquid level valve 307, wherein the liquid level valve is a liquid level meter; the input and output ends of the control box 311 are respectively connected with the oil filter 309 and the input and output ends of the standard flow sensor 310, and the output end of the control box is also connected with the first input end of the oil pump 308; the output end of the oil pump 308 is connected with the input end of the oil filter 309, and the second input end of the oil pump 308 is connected with the output end of the oil tank 302; the output of the oil filter 309 is connected to the input of the standard flow sensor 310.

The control box 311 is used for controlling the fuel driving device to work; the oil pump 308 comprises a vertical gear pump and a single-phase capacitor start asynchronous motor, and is used for providing fuel pressure for the fuel driving device, namely pressurizing fuel in the fuel tank 302 and pushing the fuel in a fuel pipeline to flow; the oil filter 309 is used for filtering pollutants in fuel oil, the oil filter precision error is not more than 5 mu m, the working temperature can be-40 ℃ to +60 ℃, and the oil filter with the overpressure sensor automatically outputs a fuel oil pollution alarm signal to the oil filter alarm indicator lamp; the standard flow sensor 310 adopts a rotary piston type flow sensor and is used for measuring the fuel flow in a pipeline of the fuel driving device; the oil tank 302 adopts a cylindrical oil tank and is used for loading fuel oil, a range 30L liquid level meter is arranged in the oil tank 302, a pressure gauge and a vent valve 306 are arranged at the top of the oil tank, the pressure gauge is an air pressure gauge 303 and is used for preventing hydraulic impact and preventing air suction or oil return from generating gas pressure or generating negative pressure when the oil pump sucks oil and stirring the oil surface when the oil pump flushes into the oil tank 302, an oil drain valve 304 and a pipeline are arranged at the bottom of the oil tank 302 and are used for discharging dirty oil and sediments, a polytomous nitrile rubber sealing ring is additionally arranged at the cover of an oil filling port 305 of the oil tank, a filter screen is additionally arranged at the oil filling port 305 of the oil tank 302 and is used for preventing oil pollution, wherein the pressure gauge and the vent valve 306 at the top of the oil tank 302 can respectively adopt a diaphragm capsule type air pressure gauge and an air pressure ball valve, and the oil drain valve 304 at the bottom of the oil tank 302 adopts a hydraulic ball valve; the speed regulating valve 301 adopts a three-way flow passage internal thread stop valve to realize flow regulation, so that the speed regulating valve 301 is used for regulating the flow rate of fuel in a pipeline of a fuel driving device; the pipeline adopts a low-pressure thin-wall steel pipe with a flared pipeline joint for connecting all parts of the fuel driving device.

Referring to fig. 6, a schematic diagram of another architecture of the fuel driving apparatus of the digital consumption meter detecting system according to the embodiment of the present invention, specifically, a schematic diagram of a control box architecture of the fuel driving apparatus, where the control box 311 includes: the fuel oil driving device comprises a solid state relay 314, an AC220V switch 312, a power indicator 313, an operation indicator 315 and an oil filter alarm indicator, and is used for controlling the operation of the fuel oil driving device. The output end of the AC220V switch 312 is connected with the input ends of the solid-state relay 314 and the power indicator 313; the output end of the solid-state relay 314 is connected with the working indicator lamp 315 and the input end of the oil pump 308; the oil filter alarm indicator light is connected with an oil filter 309 in the fuel oil driving device.

The AC220V switch 212 is closed, the power indicator lamp 313 is lightened, the oil pump 308 is controlled to work through the solid-state relay 314, the work indicator lamp 315 is lightened, after fuel oil flowing caused by the oil pump 308 flows through the oil filter 309, whether the current fuel oil flowing is abnormal or not is determined, if the current fuel oil flowing is abnormal, a fuel oil pollution alarm signal is generated and sent back to the oil filter alarm indicator lamp in the control box 311, and the pollution condition of the oil filter can be displayed according to the oil filter alarm indicator lamp.

The digital consumption meter system detector can be used for in-situ detection and off-position detection, and the fuel oil driving device is only used for off-position detection. Whether the in-situ detection or the off-site detection is carried out, the method for detecting whether the indicator of the digital fuel comprehensive flow meter is normal is the same. If the flow indicated by the output analog pulse in the digital fuel comprehensive flow meter indicator is compared with the standard flow, whether the instantaneous flow, the total consumption flow, the residual flow and the alarm function detection of the digital fuel comprehensive flow meter indicator are normal or not is judged.

However, the in-situ and out-of-position detection methods are different when detecting the turbine flow sensor. During in-situ detection, the pulse generation module generates analog output pulses as a standard, and the analog output pulses are compared with the actual output pulse signal waveform of the turbine flow sensor to detect whether the turbine flow sensor is normal or not; when the deviation is detected, the standard flow sensor generates analog output pulse, and the analog output pulse is compared with the output pulse signal of the turbine flow sensor to detect whether the turbine flow sensor is normal.

In addition, the greatest difference between the in-situ detection and the out-of-position detection is the difference in power supply modes. During in-situ detection, a power supply required by the work of the digital fuel comprehensive flow meter indicator and the turbine flow sensor is provided by a power supply system, a cable at the rear part of the digital fuel comprehensive flow meter indicator is connected to a digital consumption meter system detector during implementation, the digital consumption meter system detector supplies power to the digital fuel comprehensive flow meter indicator through airplane direct-current 28V power supply voltage, and the airplane turbine flow sensor is supplied with power after the direct-current 28V power supply voltage is converted into direct-current 5V power supply voltage through an internal power supply conversion module of the digital consumption meter system detector. When the device is in off-position detection, a digital fuel integrated flow meter indicator and a power supply required by the work of the turbine flow sensor are uniformly provided by a digital consumption meter system detector, and the digital consumption meter system detector is powered by a ground direct-current 28V power supply. At this time, the turbine type flow sensor is connected to the fuel drive device.

Referring to fig. 7, a method flowchart of an in-situ detection method of the digital consumption meter detection method according to the embodiment of the present invention is provided. The digital consumption meter system detector is parallelly connected to a rear cable of the digital fuel comprehensive flow meter indicator and is connected with an onboard cable of the turbine flow sensor through the rear cable of the digital fuel comprehensive flow meter indicator, and the in-situ detection method comprises the following steps:

step S401: inputting airplane direct current 28V power supply voltage;

step S402: the power supply conversion module converts power supply voltage;

the direct-current 28V power supply voltage of the airplane is switched by a switch module of a digital consumption meter system detector to supply power to a digital fuel comprehensive flow meter indicator; a power supply conversion module of the digital consumption meter system detector converts airplane direct-current 28V power supply voltage into direct-current 5V power supply voltage, and power is supplied to the turbine type flow sensor through an onboard cable.

Step S403: providing hydraulic power;

step S404: the turbine type flow sensor outputs a pulse signal;

step S405: a pulse generation module;

the pulse generating module generates and outputs an analog pulse signal.

Step S406: collecting a pulse signal and an analog pulse signal;

step S407: a keyboard;

the user can input the measured function or the set numerical value to the control module through the keyboard for processing.

Step S408: processing by a control module;

the control module can transmit pulse signals and analog pulse signals to the display screen and can also control the pulse generation module to output corresponding repetition frequency pulses to the digital fuel comprehensive flow meter indicator so as to indicate instantaneous flow.

Step S409: displaying on a display screen;

the display screen can display the repetition frequency, the repetition frequency difference and the pulse waveform of the analog pulse signal and the pulse signal so as to realize the pulse signal waveform detection.

Step S410: processing by a digital fuel oil comprehensive flow meter indicator;

each theoretical value is preset in the digital fuel oil comprehensive flow meter indicator, the pulse generation module sends the analog pulse signal to the digital fuel oil comprehensive flow meter indicator, and the digital fuel oil comprehensive flow meter indicator can compare the theoretical value corresponding to the analog pulse signal with the analog pulse signal so as to complete the detection of the digital fuel oil comprehensive flow meter indicator.

(1) Detecting the waveform of a pulse signal output by an aircraft turbine flow sensor in situ;

the fuel driving device of the airplane provides hydraulic power to drive the turbine type flow sensor to output instantaneous flow such as 200kg/h of fuel, namely, square wave signals with pulse repetition frequency of 1028Hz (see table 1, corresponding to the instantaneous flow of 200 kg/h); the digital consumption meter system detector acquires a pulse signal repetition frequency 1028Hz square wave signal output by the turbine type flow sensor and a repetition frequency 1028Hz square wave signal generated by the pulse generation module, outputs the pulse signal to a control module of the digital consumption meter system detector, transmits the pulse signal to a display screen of the digital consumption meter system detector, displays that the analog pulse signal is 1028Hz, the repetition frequency difference value 0 and the pulse waveform is square wave signals, displays that the repetition frequency of the aircraft turbine type flow sensor is 1029Hz, the repetition frequency difference value 1Hz and the pulse waveform is square wave signals, and completes in-situ detection of the pulse signal waveform output by the aircraft turbine type flow sensor, wherein the repetition frequency error of the turbine type flow sensor is 1Hz and less than 5 Hz.

The corresponding relationship between the pulse repetition frequency and the instantaneous flow given by the specification of a digital integrated flow meter indicator of a certain model is shown in table 1:

(2) Detecting instantaneous flow errors of a digital fuel oil comprehensive flow meter indicator in situ;

the digital consumption meter system detector control module controls the pulse generation module to output corresponding repetition frequency pulses such as 1028Hz to the airplane digital fuel integrated flow meter indicator, and the corresponding instantaneous flow of the 1028Hz repetition frequency pulses is 200kg/h by referring to the table 1; and (3) assuming that the indicator indicates that the instantaneous flow is 201kg/h, comparing to obtain that the error is 1kg/h, the error percentage is 1/200=0.5%, and is not greater than +/-0.5%, and the instantaneous flow is qualified, thus completing the in-situ detection of the instantaneous flow error of the indicator of the digital fuel oil comprehensive flow meter.

(3) Detecting the total consumed flow error of a digital fuel oil comprehensive flow meter indicator in situ;

the total flow of the digital fuel comprehensive flow meter indicator is 2000kg, the maximum instantaneous flow is 250kg/h, the residual flow is set to be 1000kg, a pulse generation module in the digital consumption meter system detector outputs a pulse signal with a repetition frequency of 1285Hz in an analog mode to the digital fuel comprehensive flow meter indicator, after 1h, the digital fuel comprehensive flow meter indicator displays that the corresponding oil quantity value is reduced by 251kg to serve as the total consumed flow detection value of the indicator, the theoretical value is obtained by comparing table 1, the total consumed flow error is 1kg through comparison, the error percentage is 1/250=0.4% and not more than +/-0.5%, the total consumed flow detection is qualified, and the in-situ detection of the total consumed flow error of the digital fuel comprehensive flow meter indicator is realized.

(4) Detecting residual flow errors of the digital fuel oil comprehensive flow meter indicator in situ;

and subtracting the total consumed flow from the residual flow set value to obtain 1000-251=749kg of current residual flow, comparing the current residual flow with the theoretical value 750kg to obtain 1kg of residual flow error, wherein the error percentage is 1/750=0.13% and is not more than +/-0.5%, the residual flow is qualified in detection, and the residual flow error in-situ detection of the digital fuel comprehensive flow meter indicator is realized.

(5) Detecting the output voltage function of the digital fuel oil comprehensive flow meter indicator in situ;

the consumption meter system detector is connected with the digital fuel comprehensive flow meter indicator and outputs direct-current 5V power voltage to the turbine flow sensor, the consumption meter system detector collects and measures the output voltage value of the digital fuel comprehensive flow meter indicator to be the direct-current 5V power voltage, the output voltage function is qualified, and the in-situ detection of the output voltage function of the digital fuel comprehensive flow meter indicator is realized.

(6) In-situ detection of an alarm function of an indicator of the digital fuel comprehensive flow meter;

the total consumption flow of the digital fuel comprehensive flow meter indicator is set as 240%, the digital fuel comprehensive flow meter indicator is converted into a time duration display, 150kg/h of instantaneous flow less than 240kg is selected from table 1, corresponding to 771Hz of repetition frequency pulse, 771Hz pulse is input into the digital fuel comprehensive flow meter indicator by the consumption meter system detector (see table 1, 771Hz represents 150kg/h of instantaneous flow, and fuel oil depletion time =240/150=1.6h (hour)), and when the time duration is less than 0.8h, a red orange residual oil warning lamp is lighted, so that the alarm function in-situ detection of the digital fuel comprehensive flow meter indicator is realized.

(7) And detecting the function of a register of the digital fuel comprehensive flow meter in situ.

The total consumption flow of the digital fuel comprehensive flow meter indicator is set as a numerical value A, the power supply of a detector of the digital fuel comprehensive flow meter system is disconnected, and a direct-current 4.5V battery in the digital fuel comprehensive flow meter indicator provides power for a register in the digital fuel comprehensive flow meter indicator; when the power supply of the detector of the digital fuel comprehensive flow meter system is closed, the display value of the total consumption flow of the indicator of the digital fuel comprehensive flow meter is still A, the register function of the indicator is normally detected, and the function in-situ detection of the register of the indicator of the digital fuel comprehensive flow meter is realized.

Referring to fig. 8, a method flowchart of an off-bit detection method of the digital consumption meter detection method according to the embodiment of the present invention is shown. The turbine type flow sensor is installed and connected into the fuel driving device by adopting a fastening device, a pulse measuring module of the digital consumption meter system detector is connected with a control box of the fuel driving device, and the in-situ detection method comprises the following steps:

step S501: inputting an external direct current 28V power supply voltage;

step S502: the power supply conversion module converts power supply voltage;

the airplane direct-current 28V power supply voltage is converted into direct-current 5V power supply voltage through a power supply conversion module of the digital consumption meter system detector, and the power supply voltage supplies power to the fuel oil driving device control box.

Step S503: a fuel drive control box;

the hydraulic power is provided by the fuel drive control box.

Step S504: the standard flow sensor outputs a pulse signal;

step S505: the turbine type flow sensor outputs a pulse signal;

step S506: the pulse measuring module measures a pulse signal;

and receiving pulse signals respectively output by the standard flow sensor and the turbine flow sensor, and measuring the pulse signals.

Step S507: processing by a control module;

and the control module transmits pulse signals respectively output by the standard flow sensor and the turbine type flow sensor to the display screen.

Step S508: a keyboard;

Step S509: a display screen;

the display screen can display the repetition frequency, the repetition frequency difference and the pulse waveform of the pulse signal so as to realize the pulse signal waveform detection.

Step S510: the pulse generating module generates frequency pulses;

step S511: digital fuel oil comprehensive flow meter indicator.

Each theoretical value is preset in the digital fuel comprehensive flow meter indicator, the pulse generation module sends the analog pulse signal to the digital fuel comprehensive flow meter indicator, and the digital fuel comprehensive flow meter indicator can compare the theoretical value corresponding to the analog pulse signal with the analog pulse signal so as to complete the detection of the digital fuel comprehensive flow meter indicator.

(1) Detecting instantaneous flow error dislocation of a digital fuel oil comprehensive flow meter indicator;

the power supply conversion module of the detector of the digital consumption meter system is powered by external direct-current 28V power supply voltage, the pulse generation module is controlled by the detector of the digital consumption meter system to output corresponding repetition frequency pulses such as 1285Hz to the indicator of the digital fuel comprehensive flow meter, the indicated instantaneous flow is 248kg/h, the instantaneous flow corresponding to the repetition frequency pulses of 1285Hz is 250kg/h according to the relation between the pulse repetition frequency and the instantaneous flow in the table 1, the error is 2kg/h, the error percentage is 2/250=0.8% and is greater than +/-0.5%, the instantaneous flow is unqualified, and the instantaneous flow error dislocation detection of the indicator of the digital fuel comprehensive flow meter is realized.

(2) The turbine flow sensor outputs pulse signal waveform off-position detection;

the fuel oil driving device works by an oil pump to provide hydraulic power, and the fuel oil forms a loop by an oil tank, the oil pump, an oil filter, a standard flow sensor, a turbine type flow sensor, a speed regulating valve and the oil tank; the speed regulating valve sets instantaneous flow such as 200kg/h (see table 1, the instantaneous flow 200kg/h corresponds to output pulse repetition frequency 1028Hz square wave signals), a pulse measuring module of the digital consumption meter system detector measures pulse signals output by the standard flow sensor and the turbine type flow sensor, measures and displays on a display screen that the pulse signal repetition frequency output by the standard flow sensor is 1028Hz, the repetition frequency difference value 0 and the pulse waveform are square wave signals, and displays that the airplane turbine type flow sensor repetition frequency is 1028Hz, the repetition frequency difference value 0 and the pulse waveform are square wave signals, thereby realizing the detection of the deviation of the pulse signal waveform output by the turbine type flow sensor.

(3) Detecting the function dislocation of a register of a digital fuel oil comprehensive flow meter;

the total consumption flow of the digital fuel comprehensive flow meter indicator is set to be 500kg, the power supply of the digital fuel comprehensive flow meter system detector is disconnected, and a direct-current 4.5V battery in the digital fuel comprehensive flow meter indicator provides power supply for a register in the digital fuel comprehensive flow meter indicator; when the power supply of the detector of the digital fuel comprehensive flow meter system is closed, the display value of the total consumption flow of the indicator of the digital fuel comprehensive flow meter is still 500kg, the register function of the indicator is normally detected, and the function dislocation detection of the register of the indicator of the digital fuel comprehensive flow meter of the airplane is realized.

(4) Detecting the total consumed flow error of the digital fuel oil comprehensive flow meter indicator in an off-position mode;

the digital fuel oil comprehensive flow meter indicator has the total flow of 2000kg, the maximum instantaneous flow of 250kg/h and the residual flow of 1000kg, a pulse generation module in the digital fuel oil comprehensive flow meter system detector outputs a pulse signal with the analog output repetition frequency of 1285Hz to the digital fuel oil comprehensive flow meter indicator, after 2h, the digital fuel oil comprehensive flow meter indicator displays that the corresponding reduced oil quantity value is 499kg of the indicator total consumption flow detection value, the comparison is carried out by comparing with the theoretical value of 500kg in the table 1 to obtain the total consumption flow error of 1kg, the error percentage is 1/500=0.2% and not more than +/-0.5%, the total consumption flow detection is qualified, and the digital fuel oil comprehensive flow meter indicator total consumption flow error dislocation detection is realized.

(5) Detecting the residual flow error of the digital fuel oil comprehensive flow meter indicator in a dislocation way;

and subtracting the total consumed flow from the residual flow set value to obtain 1000-499=501kg of current residual flow, comparing the current residual flow with the theoretical value of 500kg to obtain that the residual flow error percentage is 1/500=0.2% and is less than +/-0.5%, and detecting the residual flow qualified, thereby realizing the residual flow error dislocation detection of the digital fuel oil comprehensive flow meter indicator.

(6) The digital fuel oil comprehensive flow meter indicator output voltage function dislocation detection;

the consumption meter system detector is connected with the digital fuel comprehensive flow meter indicator, the consumption meter system detector collects and measures the output voltage value of the digital fuel comprehensive flow meter indicator of the airplane to be direct-current 5V power supply voltage, the output voltage function detection is qualified, and the digital fuel comprehensive flow meter indicator output voltage function off-position detection is realized.

(7) And (4) detecting the dislocation of the alarm function of the digital fuel oil comprehensive flow meter indicator.

The total consumed flow of the digital fuel comprehensive flow meter indicator is set as 240%, the digital fuel comprehensive flow meter indicator is converted into a time duration display, an instantaneous flow of 150kg/h smaller than 240kg is selected from the table 1, corresponding to a repetition frequency pulse 771Hz, a 771Hz pulse (fuel oil consumption time =240/150=1.6h (hour)) is input into the digital fuel comprehensive flow meter indicator by the consumption meter system detector, and when the time duration is smaller than less than 0.8h, the orange residual oil warning lamp is lighted, so that the off-position detection of the warning function of the digital fuel comprehensive flow meter indicator is realized.

The working principle of the airplane digital consumption meter detection system is as follows: the airplane digital consumption meter system detection system comprises a digital consumption meter system detector and a fuel oil driving device; the digital consumption meter system detector mainly adopts a method of simulating the fuel instantaneous flow (kg/h) of the turbine type flow sensor by pulse, sends simulation pulse to the digital fuel comprehensive flow meter indicator, detects the correctness of instantaneous flow, total consumed flow (instantaneous flow (kg/h) x hour h), output voltage, alarm function and residual flow displayed by the digital fuel comprehensive flow meter indicator on the machine, and is also used for in-situ detection of the waveform of the pulse signal output by the turbine type flow sensor on the machine; the fuel oil driving device is a closed-loop hydraulic system, fuel oil in an oil supply tank is pressurized through an oil pump, and a turbine type flow sensor on a driving machine outputs pulse signals to a display screen of a consumption meter system detector for detecting the waveform dislocation of the pulse signals output by the turbine type flow sensor on the driving machine.

In the method provided by the embodiment of the invention, the technical indexes realized by the detection system of the aircraft digital consumption meter system can comprise that:

1. consumption meter system detector:

(1) Generating a pulse signal;

a) Repetition frequency: satisfies 257Hz to 1285Hz;

b) Amplitude: 5 plus or minus 0.5V;

c) An output channel: 2-path.

(2) And (4) pulse measurement.

a) Repetition frequency: satisfies 257Hz to 1285Hz;

b) Repetition frequency precision: 2Hz;

c) A measurement channel: 4 ways.

2. The fuel oil driving device comprises:

(1) Standard flow sensor measurement range: 0kg/h to 271kg/h;

(2) And (3) measuring precision of a standard flow sensor: plus or minus 0.5 percent.

In the method provided by the embodiment of the invention, a microcomputer technology is adopted to control pulse generation, voltage acquisition, power-on self-test and pulse measurement, a virtual oscilloscope technology is adopted to acquire and detect pulses, the method has the characteristics of selecting detection contents and displaying in real time by a keyboard and a touch screen, a fuel oil loop and a standard flow sensor are provided according to a fuel oil driving device, the off-position detection of an airplane turbine flow sensor can be completed, a preset detection interface is displayed to a user after a power supply of an airplane digital consumption meter detection system is switched on, so that the user can input a corresponding selection instruction according to needs, and further, related operations are executed according to the selection instruction until a related detection processor is successfully called to obtain detection data required by the user. The method can ensure the comprehensiveness of the detection data of the airplane digital consumption meter detection system.

The embodiment of the invention provides a method for detecting an aircraft digital consumption meter, wherein a flow chart of the method is shown in fig. 9, and the method specifically comprises the following steps:

s601: switching on a power supply, and displaying a preset first detection interface to a user, wherein the first detection interface comprises temperature data and a plurality of first detection options;

the power supply modes of in-situ detection and off-site detection are different, and the power supply voltages connected with the airplane digital consumption meter detection system are also different.

In the method provided by the embodiment of the invention, after the power supply is switched on, the digital consumption meter system detector in the airplane digital consumption meter detection system needs to perform self-checking first, the matched hardware environment of the digital consumption meter system detector is automatically detected, after the self-checking is passed, the display screen jumps to the first detection interface, the current temperature data of the system can be displayed at the lower left corner of the current first detection interface, and each first detection option can be displayed in the interface.

Specifically, the temperature data represents the current temperature of the system.

Each first detection option is, for example: "1 pointer detection (home)", "2 pointer detection (off-position)", "3 sensor detection (home)", "4 sensor detection (off-position)".

It should be noted that, after the power is turned on, before displaying a preset first detection interface to the user, the method further includes: calling a preset self-checking rule; determining each target self-checking data according to the preset self-checking rule; and switching power relays for the target self-checking data to realize self-checking of the target self-checking data.

S602: when the temperature data is within a preset threshold value, if a first selection instruction input by the user at the first detection interface is received, determining a target detection option corresponding to the first selection instruction in each detection option, and determining target option information corresponding to the target detection option;

the temperature data displayed in the first detection interface only meet a preset threshold value, and a power supply conversion module and an oil filter in the system can be called.

In the method provided by the embodiment of the invention, when the temperature data is within the preset threshold, a selection instruction correspondingly input by a user in each first detection option of the first detection interface can be received, and target option information corresponding to the target detection option is determined according to the target detection option corresponding to the selection instruction, so that whether a preset detection processor corresponding to the target detection option needs to be called or not is determined subsequently.

It should be noted that, when the temperature data is not within the preset threshold, an adjustment instruction input by the user according to a preset temperature adjustment channel is received; and adjusting the temperature data according to the adjusting instruction to obtain final temperature data within the preset threshold value.

S603: judging whether to call a preset detection processor corresponding to the target detection option or not according to the target option information;

specifically, the preset detection processor refers to an airplane digital fuel oil comprehensive flow meter indicator and an airplane turbine flow sensor.

In the method provided by the embodiment of the present invention, according to the target option information, the preset detection processor corresponding to the target option information may be triggered, and a next detection interface corresponding to the current first detection interface, that is, the second detection interface, may also be triggered.

When judging whether to call a preset detection processor corresponding to the target detection option, all detection interfaces and each display logic corresponding to each detection option of each detection interface can be obtained; finding out target display logic corresponding to the target detection option from all the display logics according to target option information corresponding to the target detection option; and when the target display logic is displayed, starting to call a preset detection processor corresponding to the target detection option.

S604: if the target option information is called, determining target option data corresponding to the target option information, and loading the target option data to the preset detection processor to obtain each detection data corresponding to the current target detection option;

in the method provided by the embodiment of the invention, if the target detection option selected by the user in the first detection interface is "4-sensor detection (off-position)", at this time, the turbine flow sensor is directly called according to the "4-sensor detection (off-position)" option, the turbine flow sensor is connected to the fuel driving device, the repetition frequencies of the standard flow sensor and the aircraft turbine flow sensor and the difference value of the repetition frequencies are obtained, and the measured data waveforms are convenient for respectively displaying the detection data through the display screen in the subsequent process.

S605: if not, displaying a second detection interface corresponding to the target detection option according to the target option information, and when receiving a second selection instruction input by the user on the second detection interface, repeatedly executing the operation until obtaining each detection data corresponding to the detection option corresponding to the current selection instruction;

in the method provided by the embodiment of the invention, if the target detection option selected by the user in the first detection interface is the option of '1 indicator detection (in situ)', a detection interface corresponding to the option of '1 indicator detection (in situ)', namely, the next detection interface of the first detection interface, and the interface of 'indicator test selection (in situ)' of the second detection interface are loaded, at this time, the option of 'indicator output voltage detection' is displayed in the interface of 'indicator test selection (in situ)', and the user can touch or select the button of 'indicator output voltage detection' by a keyboard, so that the current voltage value of the indicator of the digital fuel comprehensive flow meter is obtained, and the current voltage value of the indicator of the digital fuel comprehensive flow meter is displayed through a display screen later.

It should be noted that the second detection interface corresponding to the target detection option may be displayed according to the target display logic corresponding to the target detection option.

S606: and displaying the detection data to the user.

And after the preset detection processor is successfully called, the detection option passes through the corresponding preset detection processor, the detection data corresponding to the detection option is obtained, and the detection data is displayed through the display screen.

Any numerical value and threshold value in the embodiment of the present invention may be arbitrarily set according to actual needs.

The specific implementation procedures and derivatives thereof of the above embodiments are within the scope of the present invention.

In the method provided by the embodiment of the invention, the specific operation flow is as follows:

and closing the power supply of the detector of the digital consumption meter system, and entering self-detection of the detector of the digital consumption meter system after the display screen is started to display, so as to automatically detect the matched hardware environment of the detector of the digital consumption meter system. If all the digital consumption meter system detection instruments pass through the self-checking, a self-checking interface of the digital consumption meter system detection instrument can be automatically popped out, and the next stage is started; if an error occurs, an error prompt pops up.

After self-checking is finished, displaying the current temperature of the equipment at the lower left corner of the interface, and manually controlling a temperature control module to heat if the observed temperature is too low, such as-30 ℃; entering a selected interface by pressing a number key or touch selection corresponding to a keyboard button of '1 indicator detection (home position)', '2 indicator detection (off position)', '3 sensor detection (home position)', and '4 sensor detection (off position)'.

And (3) entering instantaneous flow detection by touching selection or keyboard selection on an interface of 'indicator test selection (in situ)' on a display screen. The instantaneous flow detection displays different instantaneous flow buttons, and the corresponding number keys are selected by touch or keyboard selection according to different requirements, so that pulses with different repetition frequencies can be sent. And after the selection is finished, displaying instantaneous flow corresponding to the pulses with different repetition frequencies by the digital fuel oil comprehensive flow meter indicator.

The method comprises the steps of selecting a total consumed flow detection button by touch or keyboard on an indicator test selection (in-situ) interface of a display screen, setting the residual flow to be a certain value, selecting different instantaneous flow keys according to the requirement of a user, sending out pulses with different repetition frequencies, waiting for a period of time, calculating the total consumed flow and the current residual flow by a digital fuel oil comprehensive flow meter indicator, and displaying the total consumed flow and the current residual flow in real time.

And displaying the current voltage value of the indicator of the digital fuel integrated flow meter on an indicator test selection (home position) interface of a display screen by touching a selection button or selecting an indicator output voltage detection button by a keyboard.

And on an interface of indicator test selection (in-situ) of a display screen, selecting a touch selection button or a keyboard selection button of alarm function detection, selecting different instantaneous flow keys, sending out pulses with different repetition frequencies, and after the pulses are successfully sent, calculating the residual oil quantity and time by the digital fuel oil comprehensive flow meter indicator according to the total consumed flow, and displaying and alarming in real time.

The "indicator detection (off-position)" is selected, and the working process is the same as the "indicator detection (in-position)".

The 'sensor detection (home position)' is selected, and the display screen displays the repetition frequency of the turbine flow sensor and displays the waveform of the detected pulse.

Touch selection or keyboard selection of 'sensor detection (off-position)', wherein the turbine flow sensor is connected to the fuel driving device, the display screen respectively displays the repetition frequency and the difference value of the repetition frequency of the standard flow sensor and the aircraft turbine flow sensor, and the measured data waveform is displayed.

Corresponding to the method described in fig. 9, an embodiment of the present invention further provides a digital consumption meter detection system, which is used for specifically implementing the method in fig. 9, and an architecture diagram of the digital consumption meter detection system is shown in fig. 10, and specifically includes:

the system comprises a switching-on unit 701, a power supply and a display unit, wherein the switching-on unit is used for switching on the power supply and displaying a preset first detection interface to a user, and the first detection interface comprises temperature data and a plurality of first detection options;

a determining unit 702, configured to determine, when the temperature data is within a preset threshold, a target detection option corresponding to a first selection instruction in the detection options if the first selection instruction input by the user at the first detection interface is received, and determine target option information corresponding to the target detection option;

a determining unit 703, configured to determine whether to invoke a preset detection processor corresponding to the target detection option according to the target option information;

a loading unit 704, configured to determine target option data corresponding to the target option information if the target option information is called, and load the target option data to the preset detection processor to obtain each detection data corresponding to the current target detection option;

a repeating unit 705, configured to display a second detection interface corresponding to the target detection option according to the target option information if the detection data is not called, and when a second selection instruction input by the user on the second detection interface is received, repeatedly execute the above operations until each detection data corresponding to the detection option corresponding to the current selection instruction is obtained;

a display unit 706, configured to display the respective detection data to the user.

In the system provided by the embodiment of the invention, a microcomputer technology is adopted to control pulse generation, voltage acquisition, power-on self-test and pulse measurement, a virtual oscilloscope technology is adopted to acquire and detect pulses, the system has the characteristics of selecting detection contents and displaying in real time by a keyboard and a touch screen, a fuel oil loop and a standard flow sensor are provided according to a fuel oil driving device, the off-position detection of an airplane turbine flow sensor can be completed, a preset detection interface is displayed to a user after the airplane digital consumption meter detection system is powered on, so that the user can input a corresponding selection instruction according to the requirement, and then relevant operations are executed according to the selection instruction until a relevant detection processor is successfully called to obtain detection data required by the user. By applying the system disclosed by the invention, the comprehensiveness of the detection data of the airplane digital consumption meter detection system can be ensured.

On the basis of the system provided by the above embodiment, the system provided by the embodiment of the present invention further includes:

the first calling subunit is used for calling a preset self-checking rule;

On the basis of the system provided by the embodiment, the system provided by the embodiment of the invention comprises the following components:

On the basis of the system provided in the foregoing embodiment, in the system provided in the embodiment of the present invention, the determining unit 703 includes:

On the basis of the system provided by the foregoing embodiment, in the system provided by the embodiment of the present invention, the repeating unit 705 includes:

All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, the system or system embodiments, which are substantially similar to the method embodiments, are described in a relatively simple manner, and reference may be made to some descriptions of the method embodiments for relevant points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both.

To clearly illustrate this interchangeability of hardware and software, various illustrative components and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aircraft digital consumption meter detection method, comprising:

and displaying the detection data to the user.

2. The method of claim 1, wherein after the power is turned on, and before displaying the preset first detection interface to the user, further comprising:

calling a preset self-checking rule;

3. The method of claim 1, comprising:

4. The method of claim 1, wherein the determining whether to invoke a preset detection processor corresponding to the target detection option according to the target option information comprises:

finding out target display logic corresponding to the target detection option from all the display logics according to target option information corresponding to the target detection option;

5. The method according to claim 1 or 4, wherein the displaying the second detection interface corresponding to the target detection option according to the target option information includes:

6. An aircraft digital consumption meter detection system, comprising:

the device comprises a switching-on unit, a detection unit and a control unit, wherein the switching-on unit is used for switching on a power supply and displaying a preset first detection interface to a user, and the first detection interface comprises temperature data and a plurality of detection options;

the determining unit is used for determining a target detection option corresponding to a first selection instruction in each detection option and determining target option information corresponding to the target detection option if the first selection instruction input by the user at the first detection interface is received when the temperature data is within a preset threshold;

the repeating unit is used for displaying a second detection interface corresponding to the target detection option according to the target option information if the target detection option information is not called, and when a second selection instruction input by the user on the second detection interface is received, repeatedly executing the operation until all detection data corresponding to the detection option corresponding to the current selection instruction are obtained;

and the display unit is used for displaying the detection data to the user.

7. The system of claim 6, further comprising:

the first calling subunit is used for calling a preset self-checking rule;

and the switching subunit is used for switching the power relay for each target self-checking data so as to realize the self-checking of each target self-checking data.

8. The system of claim 6, comprising:

9. The system according to claim 6, wherein the judging unit comprises:

the processing subunit is configured to find, according to target option information corresponding to the target detection option, a target display logic corresponding to the target detection option in all the display logics;

10. The system of claim 6 or 9, wherein the repeating unit comprises: