A real-time status monitoring system for drag parachute lock

Abstract

The invention discloses a real-time state monitoring system for a drag parachute lock, comprising a rotation angle measuring device for a rotating mechanism, a transmission rod position testing device and a controller, wherein the rotation angle measuring device for the rotating mechanism comprises a magnetic steel and an angle measuring chip processing circuit, the magnetic steel is sleeved on the rotation shaft of the drag parachute lock, the angle measuring chip processing circuit is arranged on one side of the rotation shaft of the drag parachute lock driving mechanism, the transmission rod position testing device is arranged on one side of the drag parachute lock connecting rod mechanism, and the controller is connected to the angle measuring chip processing circuit and the transmission rod position testing device respectively. The system realizes real-time monitoring of the positions of various motion mechanisms of the drag parachute lock, greatly reduces the false alarm rate of signal output, greatly improves the reliability and advancement of circuit control, and timely and accurately determines its state and isolates its internal faults, thereby achieving the goal of high reliability of the drag parachute lock circuit.

Description

Technical Field

[0001] The invention relates to the technical field of parachute control, and in particular to a drag parachute lock real-time state monitoring system. Background Art

[0002] At present, there is a kind of drag parachute lock with mechatronic structure in China, whose circuit only has the functions of power-off protection and signal output. This kind of drag parachute lock control circuit was designed in the 1960s, and is only composed of wires, micro switches, electromagnetic drive mechanisms, and electrical connectors in series. This circuit uses a mechanical micro switch to control the electromagnetic drive mechanism of the drag parachute lock, such as Figure 1 As shown, the micro switch conversion is controlled by the mechanism movement, providing basic control logic, and there is no real-time status monitoring system.

[0003] The drag parachute lock is a normal landing device for aircraft. It must be used for every takeoff and landing, and has high reliability requirements. However, the circuit system has a single current input and single signal output structure. If a single circuit fails during use, the drag parachute lock will not work properly, which poses certain risks. The drag parachute lock also passively receives instructions on the aircraft. When a signal light fails or the unlocking function fails, the drag parachute lock circuit cannot identify whether it is an external circuit failure or a self-circuit failure, and the drag parachute lock itself cannot monitor input and output when a failure occurs, resulting in unclear troubleshooting. The drag parachute lock circuit also has no self-test function, and cannot perform self-test before a failure occurs, preventing related failures from occurring in advance.

[0004] The existing circuit structure of the drag parachute lock cannot meet the high reliability requirements of existing aircraft. In terms of controlling the on-off circuit of the electromagnetic drive mechanism and providing the no parachute signal in real time, the mechanical micro switch can no longer meet the use requirements. Summary of the invention

[0005] The technical problem to be solved by the present invention is, in view of the above-mentioned defects existing in the prior art, a real-time status monitoring system for a drag parachute lock is provided to realize real-time monitoring of the positions of the various moving mechanisms of the drag parachute lock, greatly reduce the false alarm rate of the signal output, greatly improve the reliability and advancement of the circuit control, and timely and accurately determine its status and isolate its internal faults, thereby achieving the goal of high reliability of the drag parachute lock circuit.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A drag parachute lock real-time status monitoring system comprises a rotation angle measuring device of a rotating mechanism, a transmission rod position testing device and a controller. The rotation angle measuring device of the rotating mechanism comprises a magnet and an angle measuring chip processing circuit. The magnet is sleeved on the rotating shaft of the drag parachute lock driving mechanism. The angle measuring chip processing circuit is arranged on one side of the rotating shaft of the drag parachute lock driving mechanism. The transmission rod position testing device is arranged on one side of the drag parachute lock connecting rod mechanism. The controller is respectively connected to the angle measuring chip processing circuit and the transmission rod position testing device.

[0008] According to the above technical solution, there are two rotating mechanism angle measuring devices, namely, a first rotating mechanism angle measuring device and a second rotating mechanism angle measuring device. The magnets of the first rotating mechanism angle measuring device and the second rotating mechanism angle measuring device are respectively the first magnet and the second magnet. The first magnet and the second magnet are respectively mounted on different rotating shafts of the resistance parachute lock driving mechanism.

[0009] According to the above technical solution, the controller includes an MCU single-chip signal processor.

[0010] According to the above technical solution, a Hall sensor chip is provided on the angle measurement chip processing circuit.

[0011] According to the above technical solution, the angle measurement chip processing circuit is fixedly arranged on the housing of the drag parachute lock driving mechanism.

[0012] According to the above technical solution, the drag parachute lock driving mechanism is a drag parachute lock electromagnetic driving mechanism.

[0013] The present invention has the following beneficial effects:

[0014] 1. The real-time monitoring of the positions of the various moving mechanisms of the drag parachute lock is achieved through the rotation mechanism angle measuring device and the transmission rod position testing device. The false alarm rate of the signal output is greatly reduced through the mutual verification of multi-channel monitoring signals, which can effectively solve the problem of real-time status monitoring of the drag parachute lock, greatly improve the reliability and advancement of circuit control, and timely and accurately determine its status and isolate its internal faults, solve circuit system faults, and achieve the goal of high reliability of the drag parachute lock circuit.

[0015] 2. Through the first rotating mechanism angle measuring device, the second rotating mechanism angle measuring device and the transmission rod position testing device, three signals are designed using triple redundancy, and the signals are judged by a two-out-of-three voting method, thereby greatly reducing the false alarm rate of signal output and effectively solving the problem of real-time status monitoring of the drag parachute lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of a traditional drag parachute lock;

[0017] Figure 22 is a schematic diagram of the structure of a real-time state monitoring system for a drag parachute lock according to an embodiment of the present invention;

[0018] Figure 3 2 is a schematic structural diagram of a first-path rotation mechanism angle measuring device in an embodiment of the present invention;

[0019] Figure 4 2 is a schematic structural diagram of a second-path rotation mechanism angle measuring device in an embodiment of the present invention;

[0020] In the figure, 1-a first rotating mechanism angle measuring device, 2-a second rotating mechanism angle measuring device, 3-a transmission rod position testing device, 4-an MCU single chip signal processor, 5-a driving mechanism, 6-a connecting rod mechanism; 101-a first magnetic steel, 102-a first angle measuring chip processing circuit, 201-a second magnetic steel, 202-a second angle measuring chip processing circuit. DETAILED DESCRIPTION

[0021] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0022] Reference Figure 2 to Figure 4 As shown, a drag parachute lock real-time status monitoring system in an embodiment provided by the present invention includes a rotating mechanism angle measuring device, a transmission rod position testing device 3 and a controller. The rotating mechanism angle measuring device includes a magnet and an angle measuring chip processing circuit. The magnet is sleeved on the rotating shaft of the drag parachute lock driving mechanism 5. The angle measuring chip processing circuit is arranged on one side of the rotating shaft of the drag parachute lock driving mechanism 5. The transmission rod position testing device 3 is arranged on one side of the drag parachute lock connecting rod mechanism 6. The controller is respectively connected to the angle measuring chip processing circuit and the transmission rod position testing device 3.

[0023] Furthermore, the angle measurement chip processing circuit measures the rotation angle of the rotating shaft of the drag parachute lock driving mechanism 5 through the magnet, and transmits the collected signal to the controller, and the controller measures the position information of the connecting rod mechanism 6 through the transmission rod position testing device 3.

[0024] Furthermore, there are two rotating mechanism angle measuring devices, namely a first rotating mechanism angle measuring device 1 and a second rotating mechanism angle measuring device 2. The magnets of the first rotating mechanism angle measuring device 1 and the second rotating mechanism angle measuring device 2 are respectively a first magnet 101 and a second magnet 201. The first magnet 101 and the second magnet 201 are respectively mounted on different rotating axes of the resistance parachute lock driving mechanism 5.

[0025] Furthermore, the controller collects three signals through the first rotating mechanism angle measuring device 1, the second rotating mechanism angle measuring device 2 and the moving rod position testing device, and judges the signals by voting 2 out of 3.

[0026] The first magnetic steel 101 and the second magnetic steel 201 are respectively provided with a first angle measuring chip processing circuit 102 and a second angle measuring chip processing circuit 202 .

[0027] Furthermore, the controller includes an MCU signal processor 4 .

[0028] Furthermore, a Hall sensor chip is provided on the angle measurement chip processing circuit.

[0029] Furthermore, the angle measurement chip processing circuit is fixedly mounted on the outer shell of the drag parachute lock driving mechanism 5 .

[0030] Furthermore, the drag parachute lock driving mechanism 5 is a drag parachute lock electromagnetic driving mechanism.

[0031] Working principle of the present invention:

[0032] The three rotating mechanism angle measuring devices include two rotating mechanism angle measuring circuits and one transmission rod position testing device 3.

[0033] The first rotating mechanism angle measurement adopts a separate sensor solution to detect the position of the drag parachute lock electromagnetic drive mechanism. The magnet for rotating mechanism angle measurement is fixed on the rotating shaft of the drag parachute lock electromagnetic drive mechanism, and the angle measuring chip equipped with the first angle measuring chip is fixed on the shell of the drag parachute lock electromagnetic drive mechanism, and an observation window is left. The rotation of the drag parachute lock electromagnetic drive mechanism shaft drives the magnet to rotate, and the Hall sensor chip converts the angle of the magnet rotation into a position signal and sends it to the MCU single chip signal processor 4.

[0034] The second rotating mechanism measurement structure is similar to the first rotating mechanism measurement structure, and detects the position of the key rotating shaft. The second rotating mechanism measurement structure also adopts a separate sensor solution. Its magnet is fixed on the key rotating shaft of the drag parachute lock, and the angle measuring chip equipped with the second angle measuring chip is fixed on the drag parachute lock housing. The rotation of the key rotating shaft of the drag parachute lock drives the magnet to rotate, and the Hall sensor chip converts the angle of the magnet rotation into a position signal and sends it to the MCU single chip signal processor 4.

[0035] The drag parachute lock transmission rod has two main movement positions, and the transmission rod position test device 3 uses a proximity switch to collect the position information of the connecting rod mechanism 6. The collected position information is identified and processed by the MCU single chip signal processor 4.

[0036] The current input and output signals of the drag parachute lock are processed and recorded by the MCU single-chip signal processor 4.

[0037] The real-time status monitoring system of the drag parachute lock adopts the normal power supply mode, obtains the real-time position information of the key structure through the three rotating mechanism angle measurement devices, and processes and identifies it through the MCU single-chip signal processor 4 to judge the real-time working status of the drag parachute lock.

[0038] The MCU single-chip signal processor 4 monitors the current input and output signals in real time. The Hall sensors measured by the first and second rotating mechanisms drive the rotation of the magnetic steel through the rotation of the key shaft, generating an angle displacement. The angle measurement chip processing circuit analyzes the change of the magnetic field and outputs the output signals K1 and K2 which are linearly related to the angle. The proximity switch of the transmission rod position information test circuit is used to detect the displacement of the connecting rod mechanism 6 and output the signal K3. When at least two signal outputs meet the requirements, the MCU single-chip signal processor 4 can determine the working state of the drag parachute lock.

[0039] The real-time status monitoring system of the drag parachute lock innovatively uses three rotating mechanism angle measurement devices and an MCU single-chip signal processor 4 to realize real-time monitoring of the positions of the various moving mechanisms of the drag parachute lock; innovatively uses triple redundancy to design three-way signals, and adopts a two-out-of-three voting method to judge the signals, thereby greatly reducing the false alarm rate of the signal output.

[0040] The present invention provides a drag parachute lock real-time state monitoring system technology, which can effectively solve the drag parachute lock real-time state monitoring problem and greatly improve the reliability and advancement of circuit control, and the present invention has a wide range of applications.

[0041] In one embodiment of the present invention, the technical structure of the drag parachute lock real-time status monitoring system is composed of a first-way rotating mechanism angle measuring device 1, a second-way rotating mechanism angle measuring device 2, a transmission rod position testing device 3, and an MCU single-chip signal processor 4.

[0042] The technical solution of the present invention fixes the first-way rotation mechanism angle measuring device 1 on the rotation shaft of the drag parachute lock electromagnetic drive mechanism through the first magnetic steel 101, and fixes the first angle measurement chip processing circuit 102 on the shell of the drag parachute lock electromagnetic drive mechanism, and leaves an observation window. The rotation of the rotation shaft of the drag parachute lock electromagnetic drive mechanism drives the first magnetic steel 101 to rotate, and the Hall sensor chip inside the first angle measurement chip processing circuit 102 converts the rotation angle of the first magnetic steel 101 into a position signal and sends it to the MCU single-chip signal processor 4.

[0043] The second rotating mechanism measuring device 2 is fixed on the key rotating shaft of the drag parachute lock. The second magnetic steel 201 is fixed on the key rotating shaft, and the second angle measuring chip processing circuit 202 is fixed on the drag parachute lock housing. The rotation of the key rotating shaft drives the second magnetic steel 201 to rotate, and the Hall sensor chip inside the second angle measuring chip processing circuit 202 converts the rotation angle of the second magnetic steel 201 into a position signal and sends it to the MCU single chip signal processor 4.

[0044] The transmission rod position testing device 3 is fixed on the drag parachute lock terminal mechanism to collect the position information of the connecting rod mechanism 6. The collected position information is identified and processed by the MCU single chip signal processor 4.

[0045] The MCU single chip signal processor 4 is fixed inside the drag parachute lock terminal mechanism.

[0046] In summary, the present invention provides a drag parachute lock real-time state monitoring system technology, which is composed of a first-way rotating mechanism angle measuring device 1, a second-way rotating mechanism angle measuring device 2, a transmission rod position testing device 3, and an MCU single-chip signal processor 4. The drag parachute lock real-time state monitoring system innovatively uses three rotating mechanism angle measuring devices and an MCU single-chip signal processor 4 to realize the real-time monitoring of the positions of each moving mechanism of the drag parachute lock; innovatively uses three redundancy to design three-way signals, and adopts a three-out-of-two voting method to judge the signals, thereby greatly reducing the false alarm rate of signal output, and can effectively solve the problem of real-time state monitoring of the drag parachute lock. The present invention provides a brand-new drag parachute lock real-time state monitoring system, which can greatly improve the reliability and advancement of circuit control, as well as the needs of timely and accurately determining its state and isolating its internal faults, solving circuit system faults, and achieving the goal of high reliability of the drag parachute lock circuit. The system includes three rotating mechanism angle measuring devices, an MCU single-chip signal processor 4, and an LDO voltage regulator IC.

[0047] The above are only preferred embodiments of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the protection scope of the present invention.

Claims

1. A real-time status monitoring system for a drag parachute lock, characterized in that: It includes a rotating mechanism angle measuring device, a transmission rod position testing device and a controller. The rotating mechanism angle measuring device includes a magnetic steel and an angle measuring chip processing circuit. The magnetic steel is sleeved on the rotating shaft of the drag parachute lock driving mechanism. The angle measuring chip processing circuit is arranged on one side of the rotating shaft of the drag parachute lock driving mechanism. The transmission rod position testing device is arranged on one side of the drag parachute lock connecting rod mechanism. The controller is connected to the angle measuring chip processing circuit and the transmission rod position testing device respectively. There are two rotating mechanism angle measuring devices, namely a first rotating mechanism angle measuring device and a second rotating mechanism angle measuring device. The magnets of the first rotating mechanism angle measuring device and the second rotating mechanism angle measuring device are respectively a first magnet and a second magnet. The first magnet and the second magnet are respectively sleeved on different rotating shafts of the drag parachute lock driving mechanism. Through the first rotating mechanism angle measuring device, the second rotating mechanism angle measuring device and the transmission rod position testing device, three signals are designed using triple redundancy, and the signals are judged by a two-out-of-three voting method, thereby greatly reducing the false alarm rate of signal output.

2. The drag parachute lock real-time status monitoring system according to claim 1, characterized in that: The controller includes a MCU signal processor.

3. The drag parachute lock real-time status monitoring system according to claim 1, characterized in that: A Hall sensor chip is provided on the angle measurement chip processing circuit.

4. The drag parachute lock real-time status monitoring system according to claim 1, characterized in that: The angle measurement chip processing circuit is fixed on the shell of the drag parachute lock driving mechanism.

5. The drag parachute lock real-time status monitoring system according to claim 1, characterized in that: The drag parachute lock driving mechanism is a drag parachute lock electromagnetic driving mechanism.

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