Method and system for detecting safety of ejection starting switch of ejection lifesaving seat

Abstract

The invention discloses a safety detection method and system for an ejection starting switch of an ejection lifesaving seat, and the system comprises two identical program controllers which are backups for each other, and each program controller comprises a first program control module, a second program control module and a third program control module. Wherein the first program control module and the second program control module are used for monitoring ejection starting switch signals; when the first program control module and the second program control module detect the state of the ejection starting switch circuit, the third program control module is informed of the current ejection starting switch circuit detection process so as to control the key ignition mechanism after ejection; and the third program control module is used for monitoring a signal of the ejection starting switch so as to control the instruction ignition mechanism after ejection and before ejection. The signal detection reliability and safety of the ejection starting switch of the ejection lifesaving seat are effectively improved, and a powerful guarantee is provided for timely and accurately starting ejection of the ejection lifesaving seat.

Description

Technical Field

[0001] The invention belongs to the technical field of ejection lifesaving, and in particular relates to a safety detection method and system for an ejection start switch of an ejection lifesaving seat. Background Art

[0002] When the aircraft is in an emergency and cannot be saved, the pilot only needs to pull the pull ring on the seat (this ring is equivalent to the ejection start switch on the ejection lifesaving seat), and the ejection lifesaving system will automatically start working, controlling each ignition mechanism to complete the work in sequence according to the attitude data. For the important input that triggers the ejection lifesaving seat to enter the ejection procedure, the ejection start signal, the detection of this signal is crucial. At present, the main detection method for this type of ejection start switch is de-jittering, which can filter out the jitter signal in the ejection start switch signal, but it cannot eliminate the jitter signal for a long time, and does not consider other safety detections such as its switch circuit. Summary of the invention

[0003] The purpose of the present invention is to provide a method and system for detecting the safety of an ejection start switch of an ejection lifesaving seat, which effectively improves the reliability and safety of the ejection start switch signal detection of the ejection lifesaving seat, and provides a strong guarantee for the timely and accurate start of ejection of the ejection lifesaving seat.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: an ejection start switch safety detection system for an ejection lifesaving seat, comprising two identical program controllers that back up each other, each program controller comprising a first program control module, a second program control module and a third program control module; wherein the first program control module and the second program control module are used to monitor the ejection start switch signal and detect the state of the ejection start switch circuit, and the first program control module and the second program control module inform the third program control module that they are currently in the ejection start switch circuit detection process when performing the ejection start switch circuit state detection, so as to control the key ignition mechanism after ejection; the third program control module is used to monitor the ejection start switch signal to control the command ignition mechanism before exiting the cabin after ejection.

[0005] After the first program-controlled module and the second program-controlled module are powered on, the state detection of the ejection start switch circuit is performed. During the detection, an ejection start switch circuit detection flag signal is sent to the third program-controlled module to inform the third program-controlled module that it is currently in the ejection start switch circuit detection process. After the circuit state detection is completed, the start or not state of the ejection start signal is periodically monitored. The program controller reports the ejection start switch circuit detection state and the ejection start signal monitoring state obtained by the first program-controlled module and the second program-controlled module to the aircraft electromechanical management computer through the aircraft management system bus; wherein, the ejection start switch circuit is a circuit that confirms whether the ejection start switch is normal through state detection, and reports the circuit state to the aircraft electromechanical management computer through the aircraft management system bus;

[0006] After the third program-controlled module is powered on, the authenticity of the ejection start switch circuit detection mark signal sent by the first program-controlled module and the second program-controlled module is judged. After the judgment is true, the start or not status of the ejection start signal is periodically monitored. The program controller reports the ejection start switch circuit detection status and the ejection start signal monitoring status obtained by the third program-controlled module to the aircraft electromechanical management computer through the aircraft management system bus.

[0007] The specific working process of the first program-controlled module and the second program-controlled module is as follows:

[0008] The first program-controlled module and the second program-controlled module detect the state of the ejection start switch circuit: enable the ejection start switch circuit, perform delay processing on it, collect the state of the ejection start switch signal, if the collected signal is in the disconnected state, the detection is normal, otherwise the detection is faulty; at the same time, the ejection start switch circuit detection flag signal is sent to the third program-controlled module to inform the third program-controlled module that it is currently in the ejection start switch circuit detection process, wherein the ejection signal change is not used as the ejection start flag; when the circuit state detection is completed, the ejection start switch circuit is closed;

[0009] The first program-controlled module and the second program-controlled module judge the authenticity of the state of the ejection start switch signal: when it is judged that the ejection start switch signal is in the start state, a delay process is performed on it, and then the state of the ejection start switch signal is collected for a first preset number of times within a period of time after the delay process, if the collected ejection start switch signal is greater than or equal to the second preset number of times and is judged to be in the start state, then it is judged that the ejection start switch is started, otherwise it is not started; wherein the first preset number of times is greater than or equal to the second preset number of times;

[0010] The programmer reports the ejection start switch circuit detection status and ejection start switch signal monitoring status of the first program control module and the second program control module to the aircraft electromechanical management computer through the aircraft management system bus to determine whether the ejection start is normal.

[0011] The specific working process of the third program control module is as follows:

[0012] The third program control module determines the authenticity of the ejection start switch signal state: when it is determined that the ejection start switch signal is in the start state, a delay process is performed on it, and then the state of the ejection start switch signal is collected for a first preset number of times within a period of time after the delay process, if the collected ejection start switch signal is greater than or equal to the second preset number of times and is judged to be in the start state, then it is determined that the ejection start switch is started, otherwise it is not started; wherein the first preset number of times is greater than or equal to the second preset number of times;

[0013] The third program-controlled module determines the authenticity of the ejection start switch circuit detection flag signal sent by the first program-controlled module and the second program-controlled module: when the ejection start switch circuit detection flag signal of the first program-controlled module and the second program-controlled module is in a valid state, a delay process is performed; if the ejection start switch circuit detection flag signal is always in a valid state within the delay process time, the ejection start signal monitoring is not performed, and the ejection start signal monitoring is performed normally after the delay process time is exceeded; if the ejection start switch circuit detection flag signal is in an invalid state within the delay process time, no delay process is performed, and the ejection start signal monitoring is performed normally afterwards;

[0014] The program controller reports the ejection start switch signal monitoring status of the third program control module C to the aircraft electromechanical management computer through the aircraft management system bus to determine whether the ejection start is normal.

[0015] A method for detecting the safety of an ejection start switch of an ejection lifesaving seat is also provided, which is applied to the above-mentioned ejection start switch safety detection system of an ejection lifesaving seat, and the method comprises the following steps:

[0016] S1. After the first program-controlled module and the second program-controlled module are powered on, the state detection of the ejection start switch circuit is performed. During the detection, an ejection start switch circuit detection flag signal is sent to the third program-controlled module to inform the third program-controlled module that it is currently in the ejection start switch circuit detection process. After the circuit state detection is completed, the start or not state of the ejection start signal is periodically monitored. The program controller reports the ejection start switch circuit detection state and the ejection start signal monitoring state obtained by the first program-controlled module and the second program-controlled module to the aircraft electromechanical management computer through the aircraft management system bus; wherein, the ejection start switch circuit is a circuit that confirms whether the ejection start switch is normal through state detection, and reports the circuit state to the aircraft electromechanical management computer through the aircraft management system bus;

[0017] S2. After the third program-controlled module is powered on, the authenticity of the ejection start switch circuit detection mark signal sent by the first program-controlled module and the second program-controlled module is judged. After the judgment is true, the start-up status of the ejection start signal is periodically monitored. The program controller reports the ejection start switch circuit detection status and the ejection start signal monitoring status obtained by the third program-controlled module to the aircraft electromechanical management computer through the aircraft management system bus.

[0018] S1 is specifically:

[0019] S1.1, the first program-controlled module and the second program-controlled module detect the state of the ejection start switch circuit: enable the ejection start switch circuit, perform delay processing on it, collect the state of the ejection start switch signal, if the collected signal is in the disconnected state, the detection is normal, otherwise the detection is faulty; at the same time, send an ejection start switch circuit detection flag signal to the third program-controlled module, informing the third program-controlled module that it is currently in the ejection start switch circuit detection process, wherein the ejection signal change is not used as an ejection start flag; when the circuit state detection is completed, close the ejection start switch circuit;

[0020] S1.2, the first program-controlled module and the second program-controlled module judge the authenticity of the state of the ejection start switch signal: when it is judged that the ejection start switch signal is in the start state, a delay process is performed on it, and then the state of the ejection start switch signal is collected for a first preset number of times within a period of time after the delay process, if the collected ejection start switch signal is greater than or equal to the second preset number of times and is judged to be in the start state, then it is judged that the ejection start switch is started, otherwise it is not started; wherein the first preset number of times is greater than or equal to the second preset number of times;

[0021] S1.3. The programmer reports the ejection start switch circuit detection status and ejection start switch signal monitoring status of the first program control module and the second program control module to the aircraft electromechanical management computer through the aircraft management system bus to determine whether the ejection start is normal.

[0022] S2 is specifically:

[0023] S2.1, the third program control module determines the authenticity of the ejection start switch signal state: when it is determined that the ejection start switch signal is in the start state, a delay process is performed on it, and then the state of the ejection start switch signal is collected for a first preset number of times within a period of time after the delay process, if the collected ejection start switch signal is greater than or equal to the second preset number of times and is judged to be in the start state, then it is determined that the ejection start switch is started, otherwise it is not started; wherein the first preset number of times is greater than or equal to the second preset number of times;

[0024] S2.2, the third program-controlled module determines the authenticity of the ejection start switch circuit detection flag signal sent by the first program-controlled module and the second program-controlled module: when the ejection start switch circuit detection flag signal of the first program-controlled module and the second program-controlled module is in a valid state, a delay process is performed. If the ejection start switch circuit detection flag signal is always in a valid state during the delay process time, the ejection start signal monitoring is not performed. After the delay process time is exceeded, the ejection start signal monitoring is performed normally. If the ejection start switch circuit detection flag signal is in an invalid state during the delay process time, no delay process is performed, and the ejection start signal monitoring is performed normally afterwards.

[0025] S2.3. The program controller reports the ejection start switch signal monitoring status of the third program control module C to the aircraft electromechanical management computer through the aircraft management system bus to determine whether the ejection start is normal.

[0026] Also provided is an aircraft equipped with an ejection lifesaving seat ejection start switch safety detection system as described in any one of the above items

[0027] A computer device is also provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the control methods described above when executing the computer program.

[0028] A computer-readable storage medium is also provided, on which a computer program is stored, and when the computer program is executed by a processor, the steps of any of the control methods described above are implemented.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention monitors the ejection start switch circuit detection state and the ejection start switch signal monitoring state and performs multi-stage authenticity judgment through the first program-controlled module, the second program-controlled module and the third program-controlled module, which can ensure that the system correctly identifies the ejection start switch state and enters the ejection program in time. The detection method has high reliability and high safety, and can maximize the safety of the pilot's life. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of a flow chart of an embodiment of the present invention;

[0032] Figure 2 1. It is a flow chart of judging the authenticity state of the ejection start switch signal in an embodiment of the present invention;

[0033] Figure 3 Schematic diagram of the process of detecting the state of the ejection start switch circuit in an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] refer to Figure 1-Figure 3 , the technical solution of the present invention is:

[0036] A safety detection method for an ejection start switch of an ejection lifesaving seat is applied to a safety detection system for an ejection start switch of an ejection lifesaving seat, the system comprising two identical program controllers serving as backup for each other, each program controller comprising a first program control module, a second program control module and a third program control module; wherein the first program control module and the second program control module are used to monitor an ejection start switch signal and detect the state of an ejection start switch circuit, and the first program control module and the second program control module inform the third program control module that the ejection start switch circuit is currently in the detection process when detecting the state of the ejection start switch circuit, so as to control a key ignition mechanism after ejection; the third program control module is used to monitor the ejection start switch signal, so as to control a command ignition mechanism before exiting the cabin after ejection;

[0037] The method comprises the following steps:

[0038] S1. After the first program-controlled module and the second program-controlled module are powered on, the state of the ejection start switch circuit is detected. During the detection, an ejection start switch circuit detection flag signal is sent to the third program-controlled module to inform the third program-controlled module that it is currently in the ejection start switch circuit detection process. After the circuit state detection is completed, the start or not state of the ejection start signal is periodically monitored (in order to enable the program controller to have fault tolerance and anti-jitter capabilities for the ejection start switch signal, it is necessary to judge the authenticity of the ejection start switch signal state). The program controller reports the ejection start switch circuit detection state and the ejection start signal monitoring state obtained by the first program-controlled module and the second program-controlled module to the aircraft electromechanical management computer through the aircraft management system bus; wherein, the ejection start switch circuit is a circuit that confirms whether the ejection start switch is normal through state detection, and reports the circuit state to the aircraft electromechanical management computer through the aircraft management system bus;

[0039] S2. After the third program-controlled module is powered on, the authenticity of the ejection start switch circuit detection mark signal sent by the first program-controlled module and the second program-controlled module is judged. After the judgment is true, the start or not status of the ejection start signal is periodically monitored (in order to make the program controller have the ability of fault tolerance and anti-jitter for the ejection start switch signal, the authenticity of the ejection start switch signal status needs to be judged). The program controller reports the ejection start switch circuit detection status and the ejection start signal monitoring status obtained by the third program-controlled module to the aircraft electromechanical management computer through the aircraft management system bus.

[0040] S1 is specifically:

[0041] S1.1, the first program-controlled module and the second program-controlled module detect the state of the ejection start switch circuit: enable the ejection start switch circuit, first delay 6ms, and then collect the ejection start switch signal state. If the collected signal is in the disconnected state, the detection is normal, otherwise the detection is faulty; at the same time, the ejection start switch circuit detection flag signal is sent to the third program-controlled module (a valid signal is sent before the ejection start switch circuit detection, and an invalid signal is sent after the detection is completed), informing the third program-controlled module that it is currently in the ejection start switch circuit detection process, in which the ejection signal change is not used as the ejection start flag; when the circuit state detection is completed, the ejection start switch circuit is closed;

[0042] S1.2, the first program control module and the second program control module judge the authenticity of the ejection start switch signal state: when it is judged that the ejection start switch signal is in the start state, first delay 15ms, and then collect the state of the ejection start switch signal 20 times within the time of 16ms to 20ms (5ms). If the ejection start switch signal collected is greater than or equal to 16 times and is judged to be in the start state, then it is judged that the ejection start switch is started, otherwise it is not started;

[0043] S1.3. The programmer reports the ejection start switch circuit detection status and ejection start switch signal monitoring status of the first program control module and the second program control module to the aircraft electromechanical management computer through the aircraft management system bus to determine whether the ejection start is normal.

[0044] S2 is specifically:

[0045] S2.1, the third program control module determines the authenticity of the ejection start switch signal state: when the ejection start switch signal is judged to be in the start state, it is first delayed for 15ms, and then the state of the ejection start switch signal is collected 20 times within the time of 16ms to 20ms (5ms). If the ejection start switch signal collected is greater than or equal to 16 times and is judged to be in the start state, then the ejection start switch is judged to be started, otherwise it is not started;

[0046] S2.2, the third program-controlled module determines the authenticity of the ejection start switch circuit detection flag signal sent by the first program-controlled module and the second program-controlled module: when the ejection start switch circuit detection flag signal of the first program-controlled module and the second program-controlled module is in a valid state, a delay of 50ms is performed. If the ejection start switch circuit detection flag signal is always in a valid state within 50ms, the ejection start signal monitoring is not performed. After more than 50ms, the ejection start signal monitoring is performed normally; if the ejection start switch circuit detection flag signal is in an invalid state within 50ms, no delay processing is performed, and the ejection start signal monitoring is performed normally afterwards;

[0047] S2.3. The program controller reports the ejection start switch signal monitoring status of the third program control module C to the aircraft electromechanical management computer through the aircraft management system bus to determine whether the ejection start is normal.

[0048] A safety detection system for an ejection start switch of an ejection lifesaving seat is also provided, comprising two identical program controllers serving as backup for each other, each program controller comprising a first program control module, a second program control module and a third program control module; wherein the first program control module and the second program control module are used to monitor an ejection start switch signal and detect the state of an ejection start switch circuit, and the first program control module and the second program control module inform the third program control module that the ejection start switch circuit is currently in the detection process when detecting the state of the ejection start switch circuit, so as to control a key ignition mechanism after ejection; the third program control module is used to monitor an ejection start switch signal, so as to control a command ignition mechanism before exiting the cabin after ejection;

[0049] After the first program-controlled module and the second program-controlled module are powered on, the state detection of the ejection start switch circuit is performed. During the detection, an ejection start switch circuit detection flag signal is sent to the third program-controlled module to inform the third program-controlled module that it is currently in the ejection start switch circuit detection process. After the circuit state detection is completed, the start or not state of the ejection start signal is periodically monitored. The program controller reports the ejection start switch circuit detection state and the ejection start signal monitoring state obtained by the first program-controlled module and the second program-controlled module to the aircraft electromechanical management computer through the aircraft management system bus; wherein, the ejection start switch circuit is a circuit that confirms whether the ejection start switch is normal through state detection, and reports the circuit state to the aircraft electromechanical management computer through the aircraft management system bus;

[0050] After the third program-controlled module is powered on, the authenticity of the ejection start switch circuit detection mark signal sent by the first program-controlled module and the second program-controlled module is judged. After the judgment is true, the start or not status of the ejection start signal is periodically monitored. The program controller reports the ejection start switch circuit detection status and the ejection start signal monitoring status obtained by the third program-controlled module to the aircraft electromechanical management computer through the aircraft management system bus.

[0051] The specific working process of the first program-controlled module and the second program-controlled module is as follows:

[0052] The first program-controlled module and the second program-controlled module detect the state of the ejection start switch circuit: enable the ejection start switch circuit, perform delay processing on it, collect the state of the ejection start switch signal, if the collected signal is in the disconnected state, the detection is normal, otherwise the detection is faulty; at the same time, the ejection start switch circuit detection flag signal is sent to the third program-controlled module to inform the third program-controlled module that it is currently in the ejection start switch circuit detection process, wherein the ejection signal change is not used as the ejection start flag; when the circuit state detection is completed, the ejection start switch circuit is closed;

[0053] The first program-controlled module and the second program-controlled module judge the authenticity of the state of the ejection start switch signal: when it is judged that the ejection start switch signal is in the start state, a delay process is performed on it, and then the state of the ejection start switch signal is collected for a first preset number of times within a period of time after the delay process, if the collected ejection start switch signal is greater than or equal to the second preset number of times and is judged to be in the start state, then it is judged that the ejection start switch is started, otherwise it is not started; wherein the first preset number of times is greater than or equal to the second preset number of times;

[0054] The programmer reports the ejection start switch circuit detection status and ejection start switch signal monitoring status of the first program control module and the second program control module to the aircraft electromechanical management computer through the aircraft management system bus to determine whether the ejection start is normal.

[0055] The specific working process of the third program control module is as follows:

[0056] The third program control module determines the authenticity of the ejection start switch signal state: when it is determined that the ejection start switch signal is in the start state, a delay process is performed on it, and then the state of the ejection start switch signal is collected for a first preset number of times within a period of time after the delay process, if the collected ejection start switch signal is greater than or equal to the second preset number of times and is judged to be in the start state, then it is determined that the ejection start switch is started, otherwise it is not started; wherein the first preset number of times is greater than or equal to the second preset number of times;

[0057] The third program-controlled module determines the authenticity of the ejection start switch circuit detection flag signal sent by the first program-controlled module and the second program-controlled module: when the ejection start switch circuit detection flag signal of the first program-controlled module and the second program-controlled module is in a valid state, a delay process is performed; if the ejection start switch circuit detection flag signal is always in a valid state within the delay process time, the ejection start signal monitoring is not performed, and the ejection start signal monitoring is performed normally after the delay process time is exceeded; if the ejection start switch circuit detection flag signal is in an invalid state within the delay process time, no delay process is performed, and the ejection start signal monitoring is performed normally afterwards;

[0058] The program controller reports the ejection start switch signal monitoring status of the third program control module C to the aircraft electromechanical management computer through the aircraft management system bus to determine whether the ejection start is normal.

[0059] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ejection start switch safety detection system for an ejection lifesaving seat, characterized in that: It includes two identical program controllers which back up each other, and each program controller includes a first program control module, a second program control module and a third program control module; wherein the first program control module and the second program control module are used to monitor the ejection start switch signal and detect the state of the ejection start switch circuit, and when the first program control module and the second program control module detect the state of the ejection start switch circuit, they inform the third program control module that they are currently in the ejection start switch circuit detection process, so as to control the key ignition mechanism after ejection; the third program control module is used to monitor the ejection start switch signal, so as to control the command ignition mechanism before leaving the cabin after ejection.

2. The ejection start switch safety detection system for an ejection lifesaving seat according to claim 1, characterized in that: After the first program-controlled module and the second program-controlled module are powered on, the state detection of the ejection start switch circuit is performed. During the detection, an ejection start switch circuit detection flag signal is sent to the third program-controlled module to inform the third program-controlled module that it is currently in the ejection start switch circuit detection process. After the circuit state detection is completed, the start or not state of the ejection start signal is periodically monitored. The program controller reports the ejection start switch circuit detection state and the ejection start signal monitoring state obtained by the first program-controlled module and the second program-controlled module to the aircraft electromechanical management computer through the aircraft management system bus; wherein, the ejection start switch circuit is a circuit that confirms whether the ejection start switch is normal through state detection, and reports the circuit state to the aircraft electromechanical management computer through the aircraft management system bus; After the third program-controlled module is powered on, the authenticity of the ejection start switch circuit detection mark signal sent by the first program-controlled module and the second program-controlled module is judged. After the judgment is true, the start or not status of the ejection start signal is periodically monitored. The program controller reports the ejection start switch circuit detection status and the ejection start signal monitoring status obtained by the third program-controlled module to the aircraft electromechanical management computer through the aircraft management system bus.

3. The ejection start switch safety detection system for an ejection lifesaving seat according to claim 2, characterized in that: The specific working process of the first program-controlled module and the second program-controlled module is as follows: The first program-controlled module and the second program-controlled module detect the state of the ejection start switch circuit: enable the ejection start switch circuit, perform delay processing on it, collect the state of the ejection start switch signal, if the collected signal is in the disconnected state, the detection is normal, otherwise the detection is faulty; at the same time, the ejection start switch circuit detection flag signal is sent to the third program-controlled module to inform the third program-controlled module that it is currently in the ejection start switch circuit detection process, wherein the ejection signal change is not used as the ejection start flag; When the circuit status detection is completed, close the ejection start switch circuit; The first program-controlled module and the second program-controlled module judge the authenticity of the state of the ejection start switch signal: when it is judged that the ejection start switch signal is in the start state, a delay process is performed on it, and then the state of the ejection start switch signal is collected for a first preset number of times within a period of time after the delay process, if the collected ejection start switch signal is greater than or equal to the second preset number of times and is judged to be in the start state, then it is judged that the ejection start switch is started, otherwise it is not started; The first preset number of times is greater than or equal to the second preset number of times; The programmer reports the ejection start switch circuit detection status and ejection start switch signal monitoring status of the first program control module and the second program control module to the aircraft electromechanical management computer through the aircraft management system bus to determine whether the ejection start is normal.

4. The ejection start switch safety detection system for an ejection lifesaving seat according to claim 2, characterized in that: The specific working process of the third program control module is as follows: The third program control module determines the authenticity of the ejection start switch signal state: when it is determined that the ejection start switch signal is in the start state, a delay process is performed on it, and then the state of the ejection start switch signal is collected for a first preset number of times within a period of time after the delay process, if the collected ejection start switch signal is greater than or equal to the second preset number of times and is judged to be in the start state, then it is determined that the ejection start switch is started, otherwise it is not started; The first preset number of times is greater than or equal to the second preset number of times; The third program-controlled module determines the authenticity of the ejection start switch circuit detection flag signal sent by the first program-controlled module and the second program-controlled module: when the ejection start switch circuit detection flag signal of the first program-controlled module and the second program-controlled module is in a valid state, a delay process is performed. If the ejection start switch circuit detection flag signal is always in a valid state within the delay process time, the ejection start signal monitoring is not performed. After the delay process time is exceeded, the ejection start signal monitoring is performed normally. If the ejection start switch circuit detection flag signal is in an invalid state within the delay processing time, the delay processing will no longer be performed, and the ejection start signal monitoring will be performed normally afterwards; The program controller reports the ejection start switch signal monitoring status of the third program control module C to the aircraft electromechanical management computer through the aircraft management system bus to determine whether the ejection start is normal.

5. A method for detecting the safety of an ejection start switch of an ejection lifesaving seat, characterized in that: Applied to the ejection start switch safety detection system of an ejection lifesaving seat as claimed in claim 1, the method comprises the following steps: S1. After the first program-controlled module and the second program-controlled module are powered on, the state detection of the ejection start switch circuit is performed. During the detection, an ejection start switch circuit detection flag signal is sent to the third program-controlled module to inform the third program-controlled module that it is currently in the ejection start switch circuit detection process. After the circuit state detection is completed, the start or not state of the ejection start signal is periodically monitored. The program controller reports the ejection start switch circuit detection state and the ejection start signal monitoring state obtained by the first program-controlled module and the second program-controlled module to the aircraft electromechanical management computer through the aircraft management system bus; wherein, the ejection start switch circuit is a circuit that confirms whether the ejection start switch is normal through state detection, and reports the circuit state to the aircraft electromechanical management computer through the aircraft management system bus; S2. After the third program-controlled module is powered on, the authenticity of the ejection start switch circuit detection mark signal sent by the first program-controlled module and the second program-controlled module is judged. After the judgment is true, the start-up status of the ejection start signal is periodically monitored. The program controller reports the ejection start switch circuit detection status and the ejection start signal monitoring status obtained by the third program-controlled module to the aircraft electromechanical management computer through the aircraft management system bus.

6. A method for detecting safety of an ejection start switch of an ejection lifesaving seat according to claim 5, characterized in that: S1 is specifically: S1.1, the first program-controlled module and the second program-controlled module detect the state of the ejection start switch circuit: enable the ejection start switch circuit, perform delay processing on it, collect the state of the ejection start switch signal, if the collected signal is in the disconnected state, the detection is normal, otherwise the detection is faulty; at the same time, send an ejection start switch circuit detection flag signal to the third program-controlled module, informing the third program-controlled module that it is currently in the ejection start switch circuit detection process, wherein the ejection signal change is not used as an ejection start flag; when the circuit state detection is completed, close the ejection start switch circuit; S1.2, the first program-controlled module and the second program-controlled module judge the authenticity of the state of the ejection start switch signal: when it is judged that the ejection start switch signal is in the start state, a delay process is performed on it, and then the state of the ejection start switch signal is collected for a first preset number of times within a period of time after the delay process, if the collected ejection start switch signal is greater than or equal to the second preset number of times and is judged to be in the start state, then it is judged that the ejection start switch is started, otherwise it is not started; wherein the first preset number of times is greater than or equal to the second preset number of times; S1.

3. The programmer reports the ejection start switch circuit detection status and ejection start switch signal monitoring status of the first program control module and the second program control module to the aircraft electromechanical management computer through the aircraft management system bus to determine whether the ejection start is normal.

7. A method for detecting safety of an ejection start switch of an ejection lifesaving seat according to claim 5, characterized in that: S2 is specifically: S2.1, the third program control module determines the authenticity of the ejection start switch signal state: when it is determined that the ejection start switch signal is in the start state, a delay process is performed on it, and then the state of the ejection start switch signal is collected for a first preset number of times within a period of time after the delay process, if the collected ejection start switch signal is greater than or equal to the second preset number of times and is judged to be in the start state, then it is determined that the ejection start switch is started, otherwise it is not started; wherein the first preset number of times is greater than or equal to the second preset number of times; S2.2, the third program-controlled module determines the authenticity of the ejection start switch circuit detection flag signal sent by the first program-controlled module and the second program-controlled module: when the ejection start switch circuit detection flag signal of the first program-controlled module and the second program-controlled module is in a valid state, a delay process is performed. If the ejection start switch circuit detection flag signal is always in a valid state within the delay process time, the ejection start signal monitoring is not performed. After the delay process time is exceeded, the ejection start signal monitoring is performed normally; If the ejection start switch circuit detection flag signal is in an invalid state within the delay processing time, the delay processing will no longer be performed, and the ejection start signal monitoring will be performed normally afterwards; S2.

3. The program controller reports the ejection start switch signal monitoring status of the third program control module C to the aircraft electromechanical management computer through the aircraft management system bus to determine whether the ejection start is normal.

8. An aircraft, characterized in that: The ejection start switch safety detection system of an ejection lifesaving seat as claimed in any one of claims 1 to 4 is mounted thereon.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the control method according to any one of claims 5 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the control method according to any one of claims 5 to 7 are implemented.

Images