CN111060763A - Method and system for detecting failure of anti-icing and deicing system based on time sequence judgment - Google Patents
Method and system for detecting failure of anti-icing and deicing system based on time sequence judgment Download PDFInfo
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- CN111060763A CN111060763A CN201911316405.5A CN201911316405A CN111060763A CN 111060763 A CN111060763 A CN 111060763A CN 201911316405 A CN201911316405 A CN 201911316405A CN 111060763 A CN111060763 A CN 111060763A
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- state information
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/008—Testing of electric installations on transport means on air- or spacecraft, railway rolling stock or sea-going vessels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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Abstract
The invention discloses a method and a system for detecting faults of an anti-icing and deicing system based on time sequence judgment. Presetting a given input time sequence signal according to the divided airplane deicing areas, and controlling a switch device array to start a corresponding deicing prevention execution assembly of a deicing prevention system to work according to the input time sequence signal; collecting working state information of the corresponding anti-icing and deicing executing assembly; comparing the collected working state information with a working state preset value to generate corresponding logic state information; performing logic operation on the generated logic state information and the input time sequence signal to generate an output time sequence signal; calculating the time difference between the corresponding states of the input time sequence signal and the output time sequence signal; and judging whether the system has a fault or not by comparing the time difference with a preset time difference value. The invention can reduce the transmission link of fault information and meet the requirements of complex logic control and safety of airplane deicing.
Description
Technical Field
The invention belongs to the technical field of avionic circuits, and particularly relates to a method and a system for detecting faults of an anti-icing and deicing system based on time sequence judgment.
Background
At present, the airplane deicing regions are more and more finely divided, and the number of the airplane deicing regions is more and more. According to the traditional mode of reporting state information through a voltage sensor and a current sensor and submitting the state information to a CPU (central processing unit) for fault monitoring, as the number of airplane deicing areas is large, the number of the voltage sensor and the number of the current sensor are correspondingly large, and the number of fault information transmission links is correspondingly increased, the requirement of fault detection of an airplane deicing prevention system cannot be met.
Disclosure of Invention
In view of the foregoing situation in the prior art, an object of the present invention is to provide a method and a system for detecting a failure of an anti-icing system based on time sequence determination, which can meet the requirement of detecting a failure of an aircraft anti-icing system.
According to one aspect of the invention, a method for detecting a failure of an anti-icing system based on time sequence judgment is provided, and comprises the following steps:
presetting a given input time sequence signal according to the divided airplane deicing areas, and controlling a switch device array to start a corresponding deicing prevention execution assembly of the deicing prevention system to work according to the input time sequence signal;
collecting working state information of the corresponding anti-icing and deicing executing assembly;
comparing the collected working state information with a working state preset value to generate corresponding logic state information;
performing logic operation on the generated logic state information and the input time sequence signal to generate an output time sequence signal;
calculating the time difference between the corresponding states of the input time sequence signal and the output time sequence signal;
and judging whether the system has a fault or not by comparing the time difference with a preset time difference value.
The step of comparing the collected working state information with the working state preset value and generating corresponding logic state information comprises the step of generating logic state information representing normal when the collected working state information is larger than or equal to the working state preset value, and the step of generating logic state information representing fault otherwise. Wherein the operating state information comprises a voltage or current signal. When the working state information is a voltage signal, the working state preset value is the normal working voltage of the on-board power supply, and the reference value is 108V.
Wherein the logical operation is a logical AND operation.
Wherein the determining whether the system is malfunctioning by comparing the time difference with a preset time difference value comprises determining that the system is malfunctioning when the time difference is greater than the preset time difference value, wherein the preset time difference value is 0.1 second.
According to another aspect of the present invention, there is provided a system for detecting a failure of an anti-icing system based on a timing determination, the system comprising: the controller presets and provides an input time sequence signal according to the divided airplane deicing areas; the switch device array starts a corresponding anti-icing and deicing execution assembly of the anti-icing and deicing system to work according to an input time sequence signal; the monitoring unit is used for acquiring working state information of the corresponding anti-icing and deicing execution assembly; the programmable logic device compares the collected working state information with a working state preset value to generate corresponding logic state information, and performs logic operation on the generated logic state information and the input time sequence signal to generate an output time sequence signal; the controller also calculates the time difference between the corresponding states of the input time sequence signal and the output time sequence signal, and judges whether the system has a fault or not by comparing the time difference with a preset time difference value.
The invention can reduce the transmission link of fault information and meet the requirements of complex logic control and safety of airplane deicing.
Drawings
FIG. 1 is a schematic diagram of the method of the present invention.
FIG. 2 is a comparative example of the time difference between the corresponding states of the input timing signal and the output timing signal in the method of the present invention.
Detailed Description
For a clearer understanding of the objects, technical solutions and advantages of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
FIG. 1 is a schematic diagram of the method of the present invention. As shown in the figure, a CPU (central processing unit) presets an input timing signal according to the divided aircraft deicing regions, and outputs the input timing signal to a programmable logic device. And the switch device array starts the corresponding anti-icing and deicing execution assembly of the anti-icing and deicing system to work according to the input time sequence signal. The monitoring unit monitors the power supply state information of the switch device array after the switch is opened, namely the working state information (which can comprise voltage or current signals) of the corresponding anti-icing and deicing execution assembly, and transmits the working state information to the programmable logic device. The method comprises the steps that a programmable logic device compares collected working state information with a working state preset value to generate corresponding logic state information (1 represents 'normal', and 0 represents 'abnormal'), specifically, when the collected working state information is larger than or equal to the working state preset value, the logic state information representing normal is generated, otherwise, the logic state information representing fault is generated, then, the generated logic state information and an input time sequence signal are subjected to logic AND operation to generate an output time sequence signal and are transmitted to a CPU, when the working state information is a voltage signal, the working state preset value is the normal working voltage of an on-board power supply, and the reference value is 108V. The CPU compares the corresponding states of the input time sequence signal and the output time sequence signal to obtain the time difference between the corresponding states, judges whether the system has a fault or not by comparing the time difference with a preset time difference value, and can judge that the ice control system has the fault when the time difference is larger than the preset time difference value (for example, the preset time difference value is set to be 0.1 second).
FIG. 2 is a comparative example of the time difference between the corresponding states of the input timing signal and the output timing signal in the method of the present invention. As shown in fig. 2, when monitoring that the rising edge of the input timing sequence jumps in the current heating zone, the CPU records a time point t1 at this time, when monitoring that the rising edge of the output timing sequence jumps in the current heating zone, records a time difference between the time point t2 at this time, and the time difference between t2 and t1 is a time difference t between the input timing sequence and the output timing sequence, and when detecting that the time difference t value of the current heating zone is greater than 0.1s, the CPU can determine a system fault.
Claims (8)
1. A method for detecting faults of an anti-icing and deicing system based on time sequence judgment comprises the following steps:
presetting a given input time sequence signal according to the divided airplane deicing areas, and controlling a switch device array to start a corresponding deicing prevention execution assembly of the deicing prevention system to work according to the input time sequence signal;
collecting working state information of the corresponding anti-icing and deicing executing assembly;
comparing the collected working state information with a working state preset value to generate corresponding logic state information;
performing logic operation on the generated logic state information and the input time sequence signal to generate an output time sequence signal;
calculating the time difference between the corresponding states of the input time sequence signal and the output time sequence signal;
and judging whether the system has a fault or not by comparing the time difference with a preset time difference value.
2. The method of claim 1, wherein comparing the collected operating state information to a preset operating state value and generating corresponding logical state information comprises generating logical state information indicating normal when the collected operating state information is greater than or equal to the preset operating state value, and otherwise generating logical state information indicating a fault.
3. The method of claim 2, wherein the operating state information comprises a voltage or current signal.
4. The method of claim 3, wherein when the operation status information is a voltage signal, the operation status preset value is a normal operation voltage of an on-board power supply, and the reference value is 108V.
5. The method of claim 1, wherein the logical operation is a logical and operation.
6. The method of claim 1, wherein said determining if the system is malfunctioning by comparing said time difference to a time difference preset value comprises determining that the system is malfunctioning when said time difference is greater than the time difference preset value.
7. The method of claim 6, wherein the time difference preset value is 0.1 seconds.
8. A system for detecting an anti-icing system fault based on timing determinations, comprising:
the controller presets and provides an input time sequence signal according to the divided airplane deicing areas;
the switch device array starts a corresponding anti-icing and deicing execution assembly of the anti-icing and deicing system to work according to an input time sequence signal;
the monitoring unit is used for acquiring working state information of the corresponding anti-icing and deicing execution assembly; and
the programmable logic device compares the collected working state information with a working state preset value to generate corresponding logic state information, and performs logic operation on the generated logic state information and the input time sequence signal to generate an output time sequence signal,
the controller also calculates the time difference between the corresponding states of the input time sequence signal and the output time sequence signal, and judges whether the system has a fault or not by comparing the time difference with a preset time difference value.
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Cited By (1)
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|---|---|---|---|---|
| CN112540596A (en) * | 2020-12-11 | 2021-03-23 | 武汉航空仪表有限责任公司 | Automatic test equipment for rotor anti-icing controller |
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Application publication date: 20200424 |