CN115649459A - Method for reducing false alarm rate, computer program product and readable storage medium - Google Patents

Abstract

The invention relates to a method for reducing the false alarm rate of a signal system, comprising the following steps: a grading step, in which a plurality of sensors in the signal system are classified into first-level sensors and second-level sensors; In the receiving step, information from a plurality of sensors is received; in the judging step, it is judged whether the information is abnormal information; in the identifying step, the level of the sensor that sends out the abnormal information is identified; In the step, the controller triggers different alarm messages according to predetermined logic based on the level of the sensor that sends out the abnormal message. In this way, by grading multiple sensors, the type of abnormality can be determined based on the level of each sensor, thereby eliminating false alarms caused by sensor abnormalities. In addition, the present invention also relates to a computer program product and a computer-readable storage medium.

Description

Method for reducing false alarm rate, computer program product and readable storage medium

technical field

The invention relates to a method for reducing the false alarm rate of a signal system, which is mainly used in a civil aircraft cabin door signal system.

In addition, the present invention also relates to a computer program product and a computer-readable storage medium capable of implementing the method.

Background technique

With the implementation of the airworthiness standard CCAR25 R4 for transport aircraft, the new civil aircraft door signal system needs to use multiple high-precision proximity sensors to monitor the status of the door.

For example, in the utility model patent entitled "A Cabin Door Warning Device" submitted by Qing'an Group Co., Ltd. on April 30, 2020, and the authorized announcement number is CN212243777U, a cabin door warning device is proposed, including : Alarm controller, alarm display panel, cargo door control panel, cargo door actuator, proximity sensor, cable: each cabin door of the aircraft is provided with the proximity sensor, each of the proximity sensors communicates with the alarm through a cable. The controller is connected and sends detection information to the alarm controller; each cargo door is also provided with the cargo door control panel and the cargo door actuator. Centralized structural layout is adopted to realize the status monitoring and alarm indication of the cabin door of the whole machine

In the invention patent of Northwestern Polytechnical University on October 27, 2020, entitled "Advanced Aircraft Cabin Door Centralized Management System" and application publication number CN112327686A, an advanced aircraft door centralized management system is proposed. Based on multi-electric aircraft technology, electromechanical integrated management technology and bus technology, the system is composed of a centralized door controller, a door actuation subsystem, a door control panel and a door system bus. The moving subsystem and the hatch control panel are interconnected through the hatch system bus.

However, since the proximity sensor is an inductive sensor, its sensitivity is high. The mutual coupling of various working conditions such as installation error/air pressurization/flight maneuvering will cause the gap between the sensor and the target to change, resulting in a change in the inductance value. Once the alarm threshold is exceeded, there will be a false alarm phenomenon that the aircraft door is closed, latched, and locked, but the door is still not closed and the alarm is issued, which will affect the operating efficiency and cost of the airline.

Although the multi-sensor technology has been extensively studied, the false alarm problem in the multi-sensor design applied to the door signal system of civil aircraft has not been solved yet.

Therefore, it is urgent to provide a method for reducing the false alarm rate of the signal system, and the method for reducing the false alarm rate of the signal system can overcome one or more shortcomings existing in the prior art.

Contents of the invention

The purpose of the present invention is to solve the following technical problems: when the cabin door signal system is closed, latched and locked, the cabin door is still closed, unlatched or unlocked, indicating and warning false alarms Phenomena affecting the dispatch of aircraft.

According to one aspect of the present invention, a method for reducing the false alarm rate of a signal system is proposed, which can be used to monitor the state of an aircraft door, and the method may include the following steps:

a grading step, in which the plurality of sensors in the signaling system are classified into first-level sensors and second-level sensors;

a receiving step in which information from a plurality of sensors is received;

Judging step, in the judging step, judging whether the information is abnormal information;

an identifying step, in which the class of the sensor that issued the abnormal information is identified; and

A triggering step. In the triggering step, the controller triggers different alarm messages according to predetermined logic based on the level of the sensor that sends out the abnormal information.

In this way, by grading multiple sensors, the type of abnormality can be judged based on the level of each sensor. For example, the priority of the first-level sensor can be higher than that of the second-level sensor, so that the false alarm caused by sensor abnormality can be at least partially eliminated. Alarm phenomenon, thereby improving the operating efficiency of airlines and reducing operating costs.

According to the above aspect of the present invention, preferably, the warning information includes the information of unsafe cabin door, wherein, the first-level sensor may be a sensor for sensing the final operation action, and in the triggering step, as long as the abnormal information is not caused by the first-level If the first-level sensor sends out, it will not trigger the door unsafe message.

The judgment logic controls the type of information sent based on the action sequence of the cabin door operation and the classification of the sensors, so that as long as the first-level sensor that does not sense the last action and has a high priority sends out abnormal information, the dispatch of the aircraft is allowed, thereby enabling Shield false alarm information while ensuring the safety of the cabin door to improve operational efficiency.

According to the above aspects of the present invention, as the simplest control logic, preferably, when no abnormal information is sent by multiple sensors, the door safety information is triggered, thereby indicating that all actions related to the door closing have been completed correctly , thus allowing the dispatch of aircraft.

According to the above aspect of the present invention, preferably, the second-level sensor includes at least two sensors, and triggers the door unsafe information when any of the following situations occurs:

Multiple sensors are emitting abnormal information; or

The first-level sensor sends abnormal information, at least one of the second-level sensors sends abnormal information, and at least one of the second-level sensors does not send abnormal information.

Thus, anomalies from multiple sensors indicate that none of the actions related to the door closing were completed correctly, while anomalies from the primary sensor and at least one anomaly from the secondary sensor can indicate the last action Or the previous action was not completed correctly, and the aircraft is not allowed to be dispatched at this time, so as to strictly distinguish the false alarm information from the normal alarm information that actually has an abnormality, so as to ensure flight safety.

According to the above aspect of the present invention, preferably, the plurality of sensors include a closing sensor, a latch sensor, and a locking sensor, and in the classification step, the locking sensor is classified as a first-level sensor, and the closing sensor and the latching sensor are classified as first-level sensors. The sensors are classified as second class sensors. Usually, the sequence of door closing operations for the crew of a civil airliner is door closing → latching → locking, and the locking operation must be performed after both closing and latching operations are completed, so the last locking operation is taken as the first level Sensors, so that the trigger logic is consistent with the operation sequence of the door, so as to achieve the desired balance between ensuring the safety of the door and improving the efficiency of aircraft dispatch.

According to the above aspect of the present invention, preferably, the method may further include a voting step, and in the voting step, the controller may trigger different alarm messages based on the combination of the states of the closing sensor, the latch sensor and the locking sensor. This voting step can be used to correct the information of the sensor whose information is presumed to be wrong according to the predetermined judgment logic when the actions of operating the cabin door are completed in sequence and the states of multiple sensors are contradictory, and only a prompt alarm will be issued without triggering Warning alert, so that the dispatch of the aircraft will not be affected by the sensor with abnormal information.

According to the above aspect of the present invention, preferably, the warning information may also include overriding information, and the overriding information may be triggered when any of the following situations occurs:

the lock sensor is emitting an abnormal message, and neither the closing sensor nor the latch sensor is emitting an abnormal message; or

The lock sensor does not issue abnormal information, and at least one of the closing sensor or the latch sensor issues abnormal information.

Since the locking operation is the last step of the hatch closing operation, it can be inferred that the closing sensor and the latch sensor have not issued abnormal information, and the closing sensor and the latch sensor have not issued abnormal information after two consecutive samplings. The hatch is locked.

In addition, since the lock sensor has the highest priority level, and the information of the lock sensor can override the abnormal information of one of the closing sensor and the latch sensor (that is, the original alarm level is reduced, for example, from the warning level to the prompt level) , thereby improving the efficiency of aircraft dispatch.

According to the above aspects of the present invention, preferably, before triggering the override information, the cabin door unsafe information can be triggered first, and when the state after two consecutive samplings remains unchanged, the cabin door unsafe information is eliminated and the override information is triggered. information.

With this setting, the information will be checked and confirmed after two consecutive samplings, so as to further confirm the safety of the cabin door.

According to another aspect of the present invention, a computer program product is proposed, including computer programs/instructions, wherein when the computer program/instructions are executed by a processor, the steps of the method according to one of the above aspects are implemented.

According to another aspect of the present invention, a computer-readable storage medium is provided, on which computer programs/instructions are stored, wherein, when the computer program/instructions are executed by a processor, the method according to one of the above-mentioned aspects is implemented. method steps.

Thus, the method for reducing the false alarm rate of the signal system of the present invention can meet the requirements of use, and proposes an overriding control method suitable for the cabin door signal system of civil aircraft, and reduces the probability of false alarms of the cabin door signal system, overcoming existing problems. The shortcomings of the technology and achieve the intended purpose.

Description of drawings

In order to further clearly describe the method for reducing the false alarm rate of the signal system according to the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. In the accompanying drawings:

1 is a schematic diagram of a signaling system for monitoring the status of an aircraft door according to a non-limiting embodiment of the present invention;

2 is a schematic flowchart of a method for reducing the false alarm rate of a signal system according to a non-limiting embodiment of the present invention;

3 is another schematic flowchart of a method for reducing the false alarm rate of a signal system according to a non-limiting embodiment of the present invention;

4 is a schematic diagram of a signaling system for monitoring the status of an aircraft door in an override state according to a non-limiting embodiment of the present invention;

5 is a schematic diagram of a signal system for monitoring the state of an aircraft door according to a non-limiting embodiment of the present invention in an unsafe state of the door;

6 is a schematic diagram of a signaling system for monitoring the status of an aircraft door according to a non-limiting embodiment of the present invention in another override state;

7 is a schematic diagram of a voting mechanism in a voting step according to a non-limiting embodiment of the present invention; and

FIG. 8 is a flow chart of the control logic of the method for reducing the false alarm rate of a signaling system according to a non-limiting embodiment of the present invention.

The drawings described above are merely schematic and not drawn strictly to scale.

List of reference signs in the drawings and examples:

100 - Methods of reducing the false alarm rate of signaling systems, including;

110 - grading step;

120 - receiving step;

130 - judging step;

140 - identification step;

150 - trigger step;

160 - voting step;

200-plus sensors including;

201 - turn off the sensor;

202 - latch sensor;

203-lock sensor;

300 - Controller.

Detailed ways

It should be understood that the invention may employ various alternative orientations and step sequences unless clearly indicated to the contrary. It should also be understood that the specific devices shown in the drawings and described in the specification are merely exemplary embodiments of the inventive concepts disclosed and defined herein. Thus, the various disclosed embodiments are not to be considered limiting unless expressly stated otherwise.

FIG. 1 is a schematic diagram of a signaling system for monitoring the status of an aircraft door, according to a non-limiting embodiment of the present invention.

As shown in the figure, in order to meet Article 25.783 of the airworthiness standard CCAR-25 R4 for transport aircraft, civil aircraft are usually equipped with a signal system for monitoring the status of the aircraft door. A plurality of sensors 200 for detecting the state of the hatch being closed, latched, locked, etc. The door closing operation sequence of the crew is generally: door closing → door latch (or latch) → door lock (or lock).

Therefore, the latching operation must be performed after both the closing and latching operations are completed. At the same time, the operation of opening the cabin door is opposite to the respective processes of the door closing operation. Once the cabin door is opened, the state of the lock sensor changes from close to far away immediately. Generally, the plurality of sensors 200 may include a close sensor 201 , a latch sensor 202 and a lock sensor 203 for sensing the completion of hatch closing, latching and locking operations, respectively.

The information/detection results of these sensors 201, 202 and 203 can be sent to the controller 300, where the controller 300 can process the information/detection results, and send the corresponding information to the cockpit for the pilot's reference, for example, to Displays the system's schematic page and/or door display panel.

These sensors 201 , 202 and 203 are usually high-precision proximity sensors, such as inductive sensors, with high precision and sensitivity. The mutual coupling of various working conditions such as installation error/air pressurization/flight maneuvering will affect the change of the gap between the sensor and the target, resulting in the change of the inductance value. Once the alarm threshold is exceeded, there will be a false alarm phenomenon that the aircraft door is closed, latched, and locked, but the door is still not closed, unlocked, or unlocked. .

Therefore, the present invention proposes an overriding control method based on sensor voting results to reduce the false alarm rate.

Fig. 2 is a schematic flow chart of a method 100 for reducing the false alarm rate of a signaling system according to a non-limiting embodiment of the present invention.

As shown in the figure and according to a non-limiting embodiment of the present invention, the method 100 for reducing the false alarm rate of a signaling system may optionally include: a classification step 110 , a receiving step 120 , a judging step 130 , an identifying step 140 and a triggering step 150 .

In the classification step 110, for example, the plurality of sensors 200 within the signaling system may be classified into first-level sensors and second-level sensors.

For example, in an exemplary embodiment in which the plurality of sensors 200 of the signaling system includes a close sensor 201, a latch sensor 202, and a lock sensor 203, in this classification step 110, the lock sensor 203 may be classified as a first-level sensor , and the close sensor 201 and the latch sensor 202 are classified as second-level sensors.

Herein, the priority of the first-level sensor may be higher than that of the second-level sensor, that is, when the information of a first-level sensor and a second-level sensor conflict, it can be inferred that the information of the first-level sensor is normal.

In a receiving step 120 , information from a plurality of sensors 200 is received. As an alternative or in addition to the classifying step 110, the controller 300 may classify the information from these sensors, ie, instead of classifying the sensors 200, the information from the respective sensors is classed. It should be understood that both of these grading processes can achieve desired grading effects.

In the judging step 130, it is judged whether the information from the sensor is abnormal information. For example, the proximity information of the sensor may be set as normal information, and the distance information of the sensor may be set as abnormal information. That is, the proximity information of the sensor indicates that the sensor is close to the target. For example, the proximity information of the closing sensor 201 may indicate that the cabin door is closed, the proximity information of the latch sensor 202 may indicate that the cabin door is latched, and the lock sensor 203 may indicate that the cabin door is closed. Implement locking.

Conversely, the away information of these sensors 200 may indicate that the sensor is far away from the target, thereby indicating that the closing, latching or locking of the hatch has not been achieved, ie the sensor will send an abnormal message.

In the identification step 140, the level of the sensor 200 that sends out the abnormal information can be identified, so as to provide reference data for subsequent logical judgments. For example, identify whether it is the first-level sensor or the second-level sensor that sends out the abnormal information.

In the triggering step 150 , the controller 300 may trigger different alarm messages according to a predetermined logic based on the level of the sensor that sends out the abnormal information. A non-limiting example of the predetermined logic will be described in more detail below with reference to the accompanying drawings.

As a non-limiting example, the warning information may include unsafe door information, and in the triggering step 150, as long as the abnormal information is not sent by the first-level sensor (such as a lock sensor), the unsafe door information will not be triggered. .

As mentioned above, this is because usually the lock sensor is used to sense the door lock operation after the door is closed and latched, then obviously, if the lock sensor is already close to the target, it can be presumed that the second level sensor is close to the target , thus allowing the dispatch of the aircraft.

It can be seen that, according to the method of the present invention, the sensor state with abnormal detection results can be identified, and in this case, the normal output of the cabin door signal system is prevented, and the warning level is automatically degraded to trigger a low-level alarm (such as a suggestive alarm). This method can also be called the overriding control method of the cabin door signal system. At this time, the warning information may also include overriding information, and the controller may send the overriding information to the cockpit, for example, simultaneously display information about overriding sensors.

It should be understood that the above-mentioned method steps are illustrative, and those skilled in the art may recombine according to needs, add some method steps or omit some method steps, without departing from the scope of the present invention. For example, although it is shown that the step of grading 110 is performed first, instead, the step of receiving 120 may be performed first, and then the step of grading may be performed without affecting the implementation of the method according to the present invention.

According to the present invention, the warning information may include unsafe cabin door information and overriding information, wherein the unsafe cabin door information may be used as high-level warning information, and the overriding information may be used as low-level warning information.

Fig. 3 is another schematic flow chart of a method 100 for reducing the false alarm rate of a signaling system according to a non-limiting embodiment of the present invention. The difference between this method and the method shown in FIG. 2 is that the method shown in FIG. 3 may further include a voting step 160 . In this voting step, the controller 300 determines whether to perform override control.

According to a non-limiting embodiment of the present invention, for example, the state of each sensor can be set as "1" when it is close to (that is, close to the corresponding target), and the state when it is far away (that is, far from the corresponding target, indicating abnormal information) is "1". 0". In this case, the various possible situations of the closed sensor 201 , the latch sensor 202 and the locked sensor 203 constitute the 8 states 000, 001, 010, 011, 100, 101, 110, 111.

As an example, the state change of the hatch during the closing process may be 000→100→110→111.

For example, when the output of the three sensors is 0 (away), the output is "DOOR UNSAFE", and the sketch page and the door display panel indicate that the door is not closed.

When the output of the three sensors is 1 (close), the normal output is "DOOR SAFE", and the sketch page and the door display panel indicate that the door is closed

For other states, if any state triggers an alarm, the aircraft will cause frequent alarms due to environmental pressurization and other problems during flight, so the voting mechanism is designed according to the classification of sensors.

Because the locking operation is the last step of hatch closing (closing the door). Must be done after closing and latching operations are complete. It is also the first step of opening the door. If the door is opened, the state of the lock sensor 203 is the first to change from 1 to 0. Therefore, in this paper, the lock sensor 203 is set as the first-level sensor (primary sensor), and the closing sensor 201 and the latch sensor 202 are set as the second-level sensors (secondary sensors).

As an example, 000 may indicate that closed sensor 201 , latch sensor 202 , and lock sensor 203 are all away from the corresponding target, ie, multiple sensors 200 indicate that the hatch is not closed, not latched, and not locked. At this time, the controller 300 can issue a warning (CAUTION) level "DOOR UNSAFE" alarm, and the simplified picture page and the door display panel in the cockpit correspondingly indicate that the door is not closed. At this point, it is presumed that there is no false alarm information, and dispatch of the aircraft is generally not permitted. In other words, when all the sensors 200 send out abnormal information, the cabin door unsafe information is triggered.

Conversely, 111 may indicate that the closed sensor 201 , latch sensor 202 and lock sensor 203 are all in proximity to their respective targets, ie the sensors indicate that the hatch is closed, latched and locked. In this case it can be presumed that the door is safe and the sketch page and door display panel indicate that the door is closed. In other words, when none of the sensors 200 sends abnormal information, the cabin door safety information is triggered.

In the above two cases, the status information of each sensor is consistent, and it can be considered that there is no false alarm.

For the other 6 states, if the most stringent method is adopted, any sensor output of 0 will trigger an alarm, and the aircraft will cause frequent alarms due to environmental pressurization and other problems during flight, so the voting mechanism is designed according to the classification of sensors .

In the voting step, the controller 300 can trigger different alarm messages based on the combination of the states of the first-level sensors (such as the lock sensor 203 ) and the second-level sensors (such as the closing sensor 201 and the latch sensor 202 ).

4 is a schematic diagram of an override control of a signaling system for monitoring the status of an aircraft door, according to a non-limiting embodiment of the present invention.

As shown in the figure, when the output of the important (higher priority) first-level sensor (such as the lock sensor 203) is 1 (approaching), no matter whether the output of the second-level sensor (such as the closing sensor 201, the latch sensor 202) Whether one output is 0 (away) or all outputs are 0 (away), the warning (CAUTION) level "DOOR UNSAFE" alarm will be triggered first.

If after two consecutive samplings (for example, two consecutive samplings in an information processing cycle), the output of the lock sensor 203 is still 1 (near), then perform overriding control, and "door unsafe (DOOR UNSAFE) )” alarm is downgraded to display information prompt level (INFO level) “XX SENSOR OVERRIDE (XX SENSOR OVERRIDE)” alarm, such as “off sensor override” or “latching sensor override”. The schematic page and the door display panel indicate that the door is closed, and at the same time, the fault information is sent to the onboard maintenance system for recording.

Similarly, when there is only one second-level sensor, such as the closing sensor 201 or the latch sensor 202, the state is far away, but the first-level sensor (such as the lock sensor 203) is in the state, it is considered that the door closing operation is completed and in place, At this time, the distance of a single sensor is a false alarm. The system will first normally trigger the warning level "DOOR UNSAFE" alarm. After two consecutive samplings (for example, after 30s), the controller will automatically eliminate the "Door UNSAFE (DOOR UNSAFE)" alarm. DOORUNSAFE)" alarm, which in turn triggers the low-level information prompt level "XX SENSOR OVERRIDE" alarm, completes the override control and allows the aircraft to be dispatched, and at the same time sends the fault information to the onboard maintenance system for recording. At this time, various display panels and pages will display that the state of the distance sensor is approaching, and the state of the corresponding hatch is closed.

The situation described in conjunction with FIG. 4 can be summarized as follows: if the first-level sensor (for example, the lock sensor 203) does not send an abnormal message, and at least one of the second-level sensors (for example, the closing sensor 201 or the latch sensor 202) sends out an abnormality information, then send overriding information, and trigger the prompt level information "shut down sensor overriding" or "lock sensor overriding".

FIG. 5 is a schematic diagram of a signaling system for monitoring the status of an aircraft door according to a non-limiting embodiment of the present invention in a door unsafe state.

As shown in the figure, when an important (higher priority) first-level sensor (eg, lock sensor 203) outputs 0 (away), and two second-level sensors (eg, close sensor 201, latch sensor 202) When only one of the outputs is 1 (close), the warning level "DOOR UNSAFE" alarm will be triggered directly, and the sketch page and the door display panel will indicate that the door is not closed.

In other words, when the first-level sensor sends abnormal information, at least one of the second-level sensors sends abnormal information, and at least one of the second-level sensors does not send abnormal information, the cabin door unsafe information is triggered. That is, if the lock sensor 203 sends abnormal information, and neither the closing sensor 201 nor the latch sensor 202 sends abnormal information, then an override information is issued, and the prompt level information "lock sensor override" is triggered.

6 is a schematic diagram of a signaling system for monitoring the status of an aircraft door in another override state, according to a non-limiting embodiment of the present invention.

As shown in the figure, when the output of the important (higher priority) first-level sensor (such as the lock sensor 203) is 0 (away), the two second-level sensors (such as the closing sensor 201 and the latch sensor 202) are both When the output is 1 (close), the warning level "DOOR UNSAFE" alarm is first triggered. After two consecutive samplings, for example, after two consecutive samplings in one information processing cycle, the two second The outputs of the first-level sensors are still all 1, and no output of the second-level sensors is 0 (away), then the override control is performed, and the "door unsafe (DOOR UNSAFE)" alarm is downgraded to display "lock sensor Overriding (LOCKED SENSOR OVERRIDE)" information prompt level alarm, the simplified map page and the door display panel indicate that the door is closed, and at the same time, the fault information is sent to the onboard maintenance system for recording.

Fig. 7 is a schematic diagram of a voting mechanism in a voting step according to a non-limiting embodiment of the present invention. In Fig. 7, the sensor voting mechanism as described above in connection with Figs. 4-6 is summarized.

As mentioned earlier, "0" or "1" about each sensor indicates that the sensor is "far away" or "close" to the target, respectively, thus corresponding to abnormal information and normal information of the sensor.

It should be understood that the method 100 for reducing the false alarm rate of a signal system as described above in conjunction with the accompanying drawings can be implemented by computer programs/instructions/software, and when the processor executes the program/instructions/software, all or all of the method 100 can be reproduced. Some steps/processes.

FIG. 8 is a flow chart of the control logic of the method for reducing the false alarm rate of a signaling system according to a non-limiting embodiment of the present invention. Those skilled in the art can realize the algorithm for reducing the false alarm rate of the signal system based on the flow chart, and implement the flow of the method through software.

As a non-limiting example, the software described above may be implemented as a computer software product that has been compiled for use with any processing engine/computer including network devices such as servers. The computer software product described above may be stored on a non-transitory information storage medium such as an optical disc (CD-ROM or DVD-ROM), digital tape, magnetic disk, solid-state memory such as USB flash memory, ROM, and the like.

As mentioned above, writing the override control logic based on the sensor voting result into the software of the door signal system controller can realize the override control of the secondary sensors of the door signal system and reduce the false alarm rate.

Preferably, the computer program/instructions may be stored on a computer-readable storage medium, which may include a non-transitory storage medium that electronically stores information. The storage media may include one or more of optically readable storage media, charge based storage media (eg, EEPROM, RAM, etc.), solid state storage media (eg, flash drives, etc.), and/or other electronically readable storage media. The electronic memory may store voting mechanism algorithms, information determined by the processor, information received from sensors, or other information to implement functions as described herein.

As a non-limiting example, controller 300 may include one or more microprocessors, microcontrollers, such as central processing units (CPUs) and/or graphics processing units (GPUs), which are implemented by utilizing software, i.e. one or more computer programs to perform their corresponding functions. Additionally, controller 300 may be embodied as an application specific integrated circuit chip and/or some other type of very highly integrated circuit chip. Alternatively, the controller may take the form of a microprocessor or discrete electrical and electronic components. As mentioned above, the controller 300 can receive information from multiple sensors 200, and process the information based on predetermined logic, such as voting on the information, and send corresponding information to the display device in the cockpit according to the processing result.

The controller 300 may have memory (such as non-transitory computer readable media, RAM and/or ROM), an operating system, a display such as a fixed style display, a data entry device such as a keyboard, a pointing device such as a "mouse", an attached Serial or parallel ports to other devices, network cards and connectors to any network.

The terms used herein to indicate orientation or orientation and the terms used to indicate order, etc. are only intended to enable those skilled in the art to better understand the concept of the present invention shown in the form of preferred embodiments, and are not intended to limit this invention. Unless otherwise stated, all sequences, orientations or orientations are for the purpose of distinguishing one element/component/structure from another element/component/structure only and do not imply any particular order, order of operation, direction unless otherwise stated. or orientation.

To sum up, the method 100 for reducing the false alarm rate of a signal system according to the embodiment of the present invention overcomes the shortcomings in the prior art, and achieves the expected purpose of the invention.

According to the embodiment of the present invention, the method 100 for reducing the false alarm rate of the signal system is based on the voting mechanism of sensor state classification, so that the sensors are classified into first-level sensors and second-level sensors based on the operation process of the cabin door and the response of the sensors. . A vote is made on whether to trigger the override logic based on sensor status.

In addition, this method is based on the overriding control design of the sensor voting results, so that based on the sensor voting results, when the overriding control logic conditions are met, the warning level "DOOR UNSAFE" alarm can be automatically suppressed, and the low level alarm can be triggered instead. The "XX SENSOR OVERRIDE" information prompts a level alarm, and at the same time, the fault information is sent to the onboard maintenance system for recording. Reduced the probability of false alarms in the cabin door signaling system.

Although the method for reducing the false alarm rate of the signal system of the present invention has been described in conjunction with the preferred embodiments above, those of ordinary skill in the art should recognize that the above examples are only for illustration, rather than as an explanation of the present invention. limit. Therefore, various modifications and variations can be made to the present invention within the spirit and scope of the claims, and these modifications and variations will fall within the scope required by the claims of the present invention.

Claims (10)

1. A method (100) of reducing the false alarm rate of a signal system, the signal system is used to monitor the state of an aircraft door, it is characterized in that the method comprises the following steps: a grading step (110), in which the plurality of sensors (200) within the signaling system are classified into first-level sensors and second-level sensors; a receiving step (120) in which information from said plurality of sensors (200) is received; Judging step (130), in the judging step, judging whether the information is abnormal information; An identification step (140) in which the level of the sensor that issued the abnormality information is identified; and A triggering step (150), in which the controller (300) triggers different alarm messages according to predetermined logic based on the level of the sensor that sends out the abnormal information. 2. The method (100) for reducing the false alarm rate of a signaling system according to claim 1, wherein the warning information includes cabin door unsafe information, wherein the first-level sensor is used to sense cabin door A sensor for the final action during door closing, and in the triggering step (150), as long as the abnormal information is not sent by the first-level sensor, the cabin door unsafe information will not be triggered. 3. The method (100) for reducing the false alarm rate of a signaling system according to claim 2, characterized in that, when none of the plurality of sensors (200) sends out any abnormal information, the cabin door safety information is triggered. 4. The method (100) for reducing the false alarm rate of a signal system according to claim 2, characterized in that the second-level sensor includes at least two sensors, and triggers the cabin door when any of the following situations occurs Unsafe information: The plurality of sensors (200) all send abnormal information; or The first-level sensor sends abnormal information, at least one of the second-level sensors sends abnormal information, and at least one of the second-level sensors does not send abnormal information. 5. The method (100) for reducing the false alarm rate of a signal system according to claim 2, characterized in that the plurality of sensors (200) include a closing sensor (201), a latch sensor (202) and a lock sensor (203), and in said grading step (110), said lock sensor (203) is classified as a first-level sensor, and said closing sensor (201) and said latch sensor (202) are classified for the second level sensor. 6. The method (100) for reducing the false alarm rate of signal system according to claim 5, further comprising a voting step (160), in the voting step, the controller (300) based on the Combinations of the states of the closing sensor (201), the latch sensor (202) and the locking sensor (203) trigger different alarm messages. 7. The method (100) for reducing the false alarm rate of a signal system according to claim 6, characterized in that the warning information also includes overriding information, and the overriding information is triggered when any of the following situations occurs : The lock sensor (203) sends abnormal information, and neither the closing sensor (201) nor the latch sensor (202) sends abnormal information; or The lock sensor (203) does not send abnormal information, and at least one of the closing sensor (201) or the latch sensor (202) sends abnormal information. 8. The method (100) for reducing the false alarm rate of a signal system according to claim 7, characterized in that, before triggering the overriding information, the cabin door unsafe information is first triggered, and after two consecutive sampling When the state of the sensor remains unchanged, the door unsafe information is eliminated and the override information is triggered. 9. A computer program product, comprising computer programs/instructions, characterized in that, when the computer program/instructions are executed by a processor, the steps of the method according to any one of claims 1-8 are realized. 10. A computer-readable storage medium, on which a computer program/instruction is stored, characterized in that, when the computer program/instruction is executed by a processor, the steps of the method according to any one of claims 1-8 are realized .

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