Onboard electromagnetic valve working state inspection equipment
By designing an inspection device that uses a magnetic switch to sense the magnetic field of a solenoid valve and emits multiple prompt signals, the problem of low efficiency and high risk of misjudgment in airborne solenoid valve status inspection is solved, achieving rapid and accurate status determination and ensuring aircraft safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHAANXI AIRCRAFT CORPORATION
- Filing Date
- 2025-11-25
- Publication Date
- 2026-04-28
AI Technical Summary
In the existing technology, the working status inspection of airborne solenoid valves is inefficient and easily affected by environmental noise, personal hearing factors and the working characteristics of the solenoid valve itself, resulting in a high risk of misjudgment and potential safety hazards.
An airborne solenoid valve operating status inspection device was designed. It utilizes a normally open magnetic switch to sense the magnetic field generated by the solenoid valve and emits various forms of prompting signals such as sound, light, and vibration through a prompting device to achieve rapid and accurate status determination.
This equipment can quickly and accurately determine the working status of solenoid valves under various working conditions, improving inspection efficiency, reducing the risk of misjudgment, and is suitable for various environments. It is simple and reliable to operate, meets document requirements, and ensures aircraft safety.
Smart Images
Figure CN121933918A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of airborne solenoid valve testing technology, and in particular to a device for inspecting the working status of airborne solenoid valves. Background Technology
[0002] Airborne solenoid valves are widely used in various systems of aircraft, and their working status is crucial to the normal operation of the entire aircraft system.
[0003] The solenoid valve, as an actuator, consists of a coil and a ferromagnetic core. It converts electrical signals into mechanical actions. When the coil winding is energized, it generates a strong magnetic field to drive the valve body to move and complete the mechanical movement to open or close the oil circuit. Because the valve core has a small stroke and short working time, its working status is not easy to determine. It can only be determined by measurement, listening, or touching to see if it is working.
[0004] Medium-sized transport aircraft are equipped with multiple solenoid valves, mainly used to control the opening and closing of oil and air circuits. In particular, multiple solenoid valves are installed in the engine to control various states of the engine. The current inspection method is to touch or listen to the sound. This inspection method is affected by environmental noise, individual hearing factors and the working characteristics of the solenoid valve itself. It cannot efficiently and quickly determine its working status, resulting in low inspection efficiency and drawbacks. It is very easy to make misjudgments, thus failing to effectively determine its working status and creating huge safety risks. Summary of the Invention
[0005] In view of this, embodiments of the present invention provide an inspection device for the operating status of an airborne solenoid valve, to solve the technical problem that the prior art cannot effectively determine the operating status of an airborne solenoid valve. The inspection device for the operating status of an airborne solenoid valve includes: Normally open magnetic switch 1, power module 10, and indication device; wherein, The positive terminal of the power module 10 is connected to the positive terminal of the prompting device, the negative terminal of the prompting device is connected to one end of the normally open magnetic switch 1, and the other end of the normally open magnetic switch 1 is connected to the negative terminal of the power module 10. When the airborne solenoid valve under test is in working state, the normally open magnetic switch 1 senses the magnetic field generated by the airborne solenoid valve, thereby closing the normally open magnetic switch 1, so that a path is established between the normally open magnetic switch 1 and the power module 10, triggering the prompting device to work and issue a prompt signal.
[0006] Compared with existing technologies, the beneficial effects achieved by at least one of the above-mentioned technical solutions adopted in the embodiments of this specification include at least the following: It proposes a method that combines the working characteristics of airborne solenoid valves and utilizes the magnetic field generated by the operation of the airborne solenoid valves to emit clear prompts (such as sound, light, vibration, and other forms of prompt signals). This inspection device can quickly and accurately determine the working status of airborne solenoid valves under various working conditions, regardless of skill level or operating space, meeting document inspection requirements, improving inspection efficiency, and avoiding damage to other onboard equipment, thus protecting the safety of finished aircraft. Furthermore, the device has three simultaneous alarm modes: sound, light, and vibration, suitable for various working environments and conditions. Its working principle is simple, its operation reliable, and it allows for rapid single-person operation regardless of operational ability. The application of this inspection device overcomes many shortcomings of the original method, intuitively reflects the working status of the airborne solenoid valves, provides a reliable guarantee for aircraft debugging and system fault diagnosis, and strongly supports system debugging in aircraft production. Attached Figure Description
[0007] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0008] Figure 1 This is a block diagram of a device for checking the working status of an airborne solenoid valve, provided in an embodiment of the present invention. Figure 2 This is a three-dimensional diagram of an airborne solenoid valve working status inspection device provided in an embodiment of the present invention; Figure 3 This is an electrical schematic diagram of an airborne solenoid valve working status inspection device provided in an embodiment of the present invention.
[0009] Figure reference numerals: 1. Normally open magnetic switch; 2. PC polycarbonate probe; 3. Magnetic ring; 4. LED flexible light strip; 5. Handle; 6. Vibration motor; 7. Back cover; 8. Switch; 9. Audible and visual alarm; 10. Power module; R5, fifth resistor; R1, first resistor; C1, first capacitor; Q1, first transistor; Q2, second transistor; R2, second resistor; C2, second capacitor; R3, third resistor; DAP1, speaker; RP, potentiometer; R4, resistor; T1, SCR; KA1, reset switch; P, microphone; V, variable resistor; D1, LED; DAP2, buzzer. Detailed Implementation
[0010] The embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0011] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0012] In this embodiment of the invention, a device for checking the working status of an airborne solenoid valve is provided, such as... Figure 1 As shown, the equipment for checking the working status of the airborne solenoid valve includes: Normally open magnetic switch 1, power module 10, and indication device; wherein, The positive terminal of the power module 10 is connected to the positive terminal of the prompting device, the negative terminal of the prompting device is connected to one end of the normally open magnetic switch 1, and the other end of the normally open magnetic switch 1 is connected to the negative terminal of the power module 10. When the airborne solenoid valve under test is in working state, the normally open magnetic switch 1 senses the magnetic field generated by the airborne solenoid valve, thereby closing the normally open magnetic switch 1, so that a path is established between the normally open magnetic switch 1 and the power module 10, triggering the prompting device to work and issue a prompt signal.
[0013] Specifically, the power module 10 can use a rechargeable battery 18650 (3500mHA) with a built-in connector to provide a DC constant voltage power supply for the inspection equipment.
[0014] Specifically, the inspection equipment is lightweight, compact, and portable, and contains a rechargeable battery pack to increase its battery life, which can effectively meet the needs of aircraft production site and field inspection and troubleshooting.
[0015] In practice, to facilitate checking the working status of the airborne solenoid valve, such as Figure 1 , Figure 2 As shown, the above-mentioned inspection equipment also includes: The PC polycarbonate probe 2 is disposed between the normally open magnetic switch 1 and the power module 10.
[0016] In practice, to ensure accurate and effective issuance of prompts under different operating environments, such as... Figure 1 As shown, the prompting device includes: Vibration motor 6 (a miniature vibration motor DC5V can be used, such as...) Figure 3 M (shown as a vibration motor) is connected to the other end of the normally open magnetic switch 1, and the negative terminal of the vibration motor 6 is connected to the negative terminal of the power module 10. Audible and visual alarm device 9, wherein the audible and visual alarm device 9 (e.g., including Figure 3 The positive terminals of the LED D1 and the buzzer DAP2 shown are connected to the other end of the normally open magnetic switch 1, and the negative terminal of the audible and visual alarm 9 is connected to the negative terminal of the power module 10. It features simultaneous alarm modes of sound, light, and vibration, which can solve the disadvantages of noisy external environments, nighttime operation, and repeated disassembly and reassembly of connectors, thus avoiding the risk of damage to airborne equipment.
[0017] In practical implementation, in order to achieve portability, such as Figure 1 , Figure 2 As shown, the above-mentioned inspection equipment also includes: A handle 5 is located at one end of the PC polycarbonate probe 2. The vibration motor 6 and the power module 10 are housed within the cavity of the handle 5, and the audible and visual alarm 9 is mounted on the rear cover 7 of the handle 5. This handheld, onboard solenoid valve operation status inspection device improves portability. Specifically, a waterproof quick-release plug can be used as the connector between the handle 5 and the PC polycarbonate probe 2, allowing for detachable and separate storage. A cylindrical aluminum alloy shell can be used as the carrier for the handheld handle 5 and the components within the inspection device.
[0018] In practice, to meet the inspection requirements under different environments, such as Figure 1 As shown, the above-mentioned inspection equipment also includes: LED flexible light strip 4 and switch 8, wherein... The flexible LED light strip 4 is disposed inside the cavity of the PC polycarbonate probe 2, and the flexible LED light strip 4 is used to provide illumination; The switch 8 is disposed on the back cover 7 of the handle 5, and the positive terminal of the switch 8 is connected to the positive terminal of the power module 10; the positive terminal of the LED flexible light strip 4 is connected to the negative terminal of the switch 8; and the negative terminal of the LED flexible light strip 4 is connected to the negative terminal of the power module 10.
[0019] In practical implementation, in order to realize the self-testing function of the inspection equipment and ensure the accuracy and effectiveness of the inspection results, such as Figure 1 As shown, the above-mentioned inspection equipment also includes: A magnetic ring 3 is fitted around one end of the PC polycarbonate probe 2. The magnetic ring 3 is moved to the other end of the PC polycarbonate probe 2 and close to the normally open magnetic switch 1. The magnetic ring 3 provides a magnetic field to trigger the normally open magnetic switch 1 to close, so that the normally open magnetic switch 1 and the power module 10 are connected, triggering the prompting device to work and issue a prompt signal, thereby realizing the self-test of the inspection equipment.
[0020] In practice, to further improve the accuracy of the inspection results, in addition to magnetic field-based inspection, sound-based inspection is also performed. For example, the aforementioned inspection equipment also includes: A microphone is installed on the rear side of the normally open magnetic switch 1; The amplified sound control module, wherein the output terminal of the microphone is connected to the input terminal of the amplified sound control module (e.g., Figure 3 As shown, the microphone P is connected to the input terminal of the amplified sound control module through a variable resistor V. The positive terminal of the amplified sound control module is connected to the positive terminal of the prompting device and the positive terminal of the power module 10. The negative terminal of the amplified sound control module is connected to the negative terminal of the prompting device, and the negative terminal of the power module 10 is connected to the negative terminal of the prompting device. The microphone converts the sound signal (such as the faint sound produced by the vibration of the airborne solenoid valve) received from the airborne solenoid valve into an electrical signal and outputs it to the amplified sound control module. The amplified sound control module controls the prompting device to work and emit a prompting signal based on the amplified electrical signal.
[0021] In specific implementation, such as Figure 3 As shown, the amplified sound control module includes: a fifth resistor R5, a first resistor R1, a first capacitor C1, a first transistor Q1, a second transistor Q2, a second resistor R2, a second capacitor C2, a third resistor R3, a speaker DAP1, a potentiometer RP, a fourth resistor R4, a silicon controlled rectifier T1, and a reset switch KA1. One end of the fifth resistor R5 and one end of the first resistor R1 are connected in parallel to the positive terminal of the power module 10; the other end of the fifth resistor R5 is connected in series with one end of the first capacitor C1; the other end of the first capacitor C1 is connected to the base of the first transistor Q1; the collector of the first transistor Q1 is connected to the other end of the first resistor R1 and one end of the second resistor R2; the emitter of the first transistor Q1 is connected to the base of the second transistor Q2; the collector of the second transistor Q2 is connected to the other end of the second resistor R2; the emitter of the second transistor Q2 is connected to one end of the reset switch KA1; the collector of the second transistor Q2 is connected to one end of the second capacitor C2; the other end of the second capacitor C2 is connected to one end of the third resistor R3 and the positive terminal of the speaker DAP1; the negative terminal of the speaker DAP1 and the emitter of the second transistor Q2 are connected to the negative terminal of the power module 10. The other end of the third resistor R3 is connected to the input terminal of the potentiometer RP, and the output terminal of the potentiometer RP is connected to the positive terminal of the prompting device; one end of the fourth resistor R4 is connected to the other end of the fifth resistor R5 and one end of the first capacitor C1, serving as the input terminal of the amplified sound control module; the other end of the fourth resistor R4 is connected to the gate (G) terminal of the thyristor T1, the anode (A) terminal of the thyristor T1 is connected to the other end of the reset switch KA1, the cathode (K) terminal of the thyristor T1 is connected to one end of the reset switch KA1 and the negative terminal of the LED flexible light strip 4, the positive terminal of the LED flexible light strip 4 is connected to the negative terminal of the switch 8, and the positive terminal of the switch 8 is connected to the positive terminal of the power module 10 for illumination; one end of the normally open magnetic switch 1 is connected to one end of the reset switch KA1; the other end of the normally open magnetic switch 1 is connected to the negative terminal of the prompting device, that is, the negative terminal of the prompting device forms a circuit through the A to K terminals of the thyristor T1 and the negative terminal of the power module 10, so that the prompting device can work.
[0022] In practice, the method of using the above-mentioned equipment for checking the working status of airborne solenoid valves is as follows: 1. Preparatory work before the experiment 1.1 The operator pushes the self-test magnetic ring 3 at the bottom of the inspection equipment to the top of the PC polycarbonate probe 2. After the normally open magnetic control switch 1 senses the magnetic field, it connects the internal contacts and sends a signal to activate the LED 4, vibration motor 6, and buzzer 9 to generate an alarm prompt, thus completing the functional self-test of the handheld airborne solenoid valve inspection equipment.
[0023] 1.2 After verifying that the equipment self-test is normal, pull the self-test magnetic ring 3 to the bottom of the PC polycarbonate probe 2, ensuring that it does not interfere with the magnetic control switch 1. The onboard solenoid valve is turned on and generates a magnetic field. Use the probe 2 to approach the working onboard solenoid valve, with the top of the probe 2 5-10mm away from the onboard solenoid valve. After the inspection equipment senses the magnetic field, the normally open magnetic control switch 1 closes, thus establishing a connection between the normally open magnetic control switch 1 and the power module 10, triggering the prompting device to work and issue a prompt signal.
[0024] 1.3 Repeatedly switching the on / off switch of the airborne solenoid valve will cause the corresponding alarm signal of the handheld airborne solenoid valve inspection equipment to switch on / off accordingly. Repeated switching on and off will ensure the reliable operation of the airborne solenoid valve.
[0025] 1.4 After the power-on test is completed, turn on the equipment switch, remove and store the probe 2 of the inspection equipment, place the self-test magnetic ring 3 at the bottom of the probe and secure it firmly, and take inventory of all relevant items. The testing and inspection work is now complete. Inspection personnel must be present during the testing and inspection process.
[0026] The aforementioned equipment for inspecting the working status of airborne solenoid valves has the following characteristics; 1) This equipment is lightweight and small in size, making it easy to carry.
[0027] 2) The operation method is simple and the test results are intuitive and accurate.
[0028] 3) It has a wide range of applications and can be used in various work environments.
[0029] The embodiments of this invention achieve the following technical effects: A method combining the working characteristics of airborne solenoid valves and utilizing the magnetic field generated by the airborne solenoid valves to emit clear prompts (such as sound, light, vibration, and other forms of prompt signals). This inspection device can quickly and accurately determine the working status of airborne solenoid valves under various working conditions, regardless of skill level or operating space, according to document requirements. This satisfies document inspection requirements, improves inspection efficiency, does not damage other onboard equipment, and is beneficial to protecting the safety of finished aircraft. Furthermore, the device has three simultaneous alarm modes: sound, light, and vibration, suitable for various working environments and conditions. Its working principle is simple, its operation is reliable, and it allows for rapid single-person operation regardless of skill level. The application of this inspection device overcomes many shortcomings of the original method, intuitively reflecting the working status of the airborne solenoid valves, providing a reliable guarantee for aircraft debugging and system fault diagnosis, and strongly supporting system debugging in aircraft production.
[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations can be made to the embodiments of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A device for inspecting the working status of an airborne solenoid valve, characterized in that, include: A normally open magnetic switch (1), a power supply module (10), and a notification device; wherein, The positive terminal of the power module (10) is connected to the positive terminal of the prompting device, the negative terminal of the prompting device is connected to one end of the normally open magnetic switch (1), and the other end of the normally open magnetic switch (1) KA3 is connected to the negative terminal of the power module (10). When the airborne solenoid valve under test is in working state, the normally open magnetic control switch (1) senses the magnetic field generated by the airborne solenoid valve, and realizes the closure of the normally open magnetic control switch (1), so that the normally open magnetic control switch (1) and the power module (10) are connected, triggering the prompting device to work and issue a prompting signal.
2. The inspection equipment as described in claim 1, characterized in that, Also includes: PC polycarbonate probe (2) is disposed between the normally open magnetic switch (1) and the power module (10).
3. The inspection equipment as described in claim 2, characterized in that, The prompting device includes: Vibration motor (6), the positive terminal of the vibration motor (6) is connected to the other end of the normally open magnetic control switch (1), and the negative terminal of the vibration motor (6) is connected to the negative terminal of the power module (10). The positive terminal of the audible and visual alarm (9) is connected to the other end of the normally open magnetic control switch (1), and the negative terminal of the audible and visual alarm (9) is connected to the negative terminal of the power module (10).
4. The inspection device as described in claim 3, characterized in that, Also includes: The handle (5) is located at one end of the PC polycarbonate probe (2), the vibration motor (6) and the power module (10) are located in the cavity of the handle (5), and the sound and light alarm (9) is located on the back cover (7) of the handle (5).
5. The inspection equipment as described in claim 4, characterized in that, Also includes: LED flexible light strip (4) and switch (8), wherein, The LED flexible light strip (4) is disposed in the cavity of the PC polycarbonate probe (2), and the LED flexible light strip (4) is used to provide illumination; The switch (8) is located on the back cover (7) of the handle (5). The positive terminal of the switch (8) is connected to the positive terminal of the power module (10). The positive terminal of the LED flexible light strip (4) is connected to the negative terminal of the switch (8). The negative terminal of the LED flexible light strip (4) is connected to the negative terminal of the power module (10).
6. The inspection equipment as described in claim 2, characterized in that, Also includes: A magnetic ring (3) is fitted around one end of the PC polycarbonate probe (2). The magnetic ring (3) is moved to the other end of the PC polycarbonate probe (2) and close to the normally open magnetic switch (1). The magnetic ring (3) provides a magnetic field to trigger the normally open magnetic switch (1) to close, so that the normally open magnetic switch (1) and the power module (10) are connected, triggering the prompting device to work and issue a prompting signal, thereby realizing the self-test of the inspection equipment.
7. The inspection device as described in any one of claims 1 to 6, characterized in that, Also includes: A microphone is installed on the rear side of the normally open magnetic switch (1); The amplified sound control module is connected to the input terminal of the microphone, the positive terminal of the amplified sound control module is connected to the positive terminal of the prompting device and the positive terminal of the power module (10), the negative terminal of the amplified sound control module is connected to the negative terminal of the prompting device, and the negative terminal of the power module (10) is connected to the negative terminal of the prompting device. The microphone converts the sound signal generated by the operation of the airborne solenoid valve into an electrical signal and outputs it to the amplified sound control module. The amplified sound control module controls the prompting device to operate based on the amplified electrical signal to emit a prompting signal.
8. The inspection device as described in claim 7, characterized in that, The amplified sound control module includes: a fifth resistor (R5), a first resistor (R1), a first capacitor (C1), a first transistor (Q1), a second transistor (Q2), a second resistor (R2), a second capacitor (C2), a third resistor (R3), a speaker (DAP1), a potentiometer (RP), a fourth resistor (R4), a silicon controlled rectifier (T1), and a reset switch (KA1). One end of the fifth resistor (R5) and one end of the first resistor (R1) are connected in parallel to the positive terminal of the power module (10); the other end of the fifth resistor (R5) is connected in series with one end of the first capacitor (C1), the other end of the first capacitor (C1) is connected to the base of the first transistor (Q1), the collector of the first transistor (Q1) is connected to the other end of the first resistor (R1) and one end of the second resistor (R2), the emitter of the first transistor (Q1) is connected to the base of the second transistor (Q2), the collector of the second transistor (Q2) is connected to the other end of the second resistor (R2), the emitter of the second transistor (Q2) is connected to one end of the reset switch (KA1), the collector of the second transistor (Q2) is connected to one end of the second capacitor (C2), the other end of the second capacitor (C2) is connected to one end of the third resistor (R3) and the positive terminal of the speaker (DAP1), and the negative terminal of the speaker (DAP1) is connected to the second... The emitter of transistor (Q2) is connected to the negative terminal of the power supply module (10); the other end of the third resistor (R3) is connected to the input terminal of potentiometer (RP); the output terminal of potentiometer (RP) is connected to the positive terminal of the prompting device; one end of the fourth resistor (R4) is connected to the other end of the fifth resistor (R5) and one end of the first capacitor (C1), serving as the input terminal of the amplified sound control module; the other end of the fourth resistor (R4) is connected to the (G) terminal of the thyristor (T1), and the (A) terminal of the thyristor T1 is connected to the (G) terminal. The K pole of the thyristor is connected to the other end of the reset switch (KA1), the K pole of the thyristor is connected to one end of the reset switch (KA1) and the negative pole of the LED flexible light strip (4), the positive pole of the LED flexible light strip (4) is connected to the negative pole of the switch (8), and the positive pole of the switch (8) is connected to the positive pole of the power module (10) for lighting; one end of the normally open magnetic switch (1) is connected to one end of the reset switch (KA1); the other end of the normally open magnetic switch (1) is connected to the negative pole of the indicator device.