Water tank leakage monitoring system and method based on infrared detection

Abstract

The invention relates to a water tank leakage monitoring system and method based on infrared detection, and belongs to the technical field of special aircraft task systems. According to the invention, the leakage of the water tank is monitored in real time through an infrared detection method, the reliability of the monitoring result is improved through the cooperation of the high-level sensor and the low-level sensor, and the detection result is transmitted to the display panel to be displayed, so that a crew can conveniently monitor the leakage condition in real time, the task completion efficiency is improved, and the requirements of quick response and fire extinguishment are met. According to the scheme, an infrared detection scheme is creatively applied to fire extinguishing aircraft water tank leakage detection, the water tank leakage condition can be known through the sensor, external analysis equipment is not needed, the leakage condition is directly reported to the display panel, more visual man-machine interaction experience is achieved, good real-time performance is achieved, the filling efficiency can be effectively improved, and the fire extinguishing aircraft water tank leakage detection method is suitable for popularization and application. And the method has good application value.

Description

Technical Field

[0001] The invention belongs to the technical field of special aircraft mission systems, and in particular relates to a water tank leakage monitoring system and method based on infrared detection. Background Art

[0002] The aircraft is equipped with a water tank inside, which can be used as a fire-fighting aircraft and can perform emergency fire-fighting tasks in situations such as sudden forest fires. During the mission, it is necessary to grasp the leakage of the water tank in real time. If a leak occurs, measures can be taken quickly to minimize the impact. Traditional sensors cannot directly monitor whether there is a leak and need to cooperate with other controllers for analysis, which greatly reduces the monitoring efficiency and cannot quickly obtain the status of the water tank, which makes it difficult to determine whether there is a leak. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] The technical problem to be solved by the present invention is to design a water tank leakage monitoring system and method, which can quickly and accurately monitor the leakage of the water tank.

[0005] (II) Technical solution

[0006] In order to solve the above technical problems, the present invention provides a water tank leakage monitoring system based on infrared detection, including a leakage sensor and a display panel;

[0007] There are two leakage sensors, a high-level leakage sensor fixed on the top of the compartment and a low-level leakage sensor fixed on the bottom of the compartment. The high-level and low-level leakage sensors are used to detect high-level and low-level leakage of the water tank respectively, and both contain infrared lasers, infrared detectors, and prisms. When no leakage occurs, the leakage sensor is located in the air, and the infrared laser emits infrared light, which enters the prism at a preset angle and undergoes total reflection after passing through the prism. After the total reflection process, the light propagates along the reflected light path, returns to the inside of the leakage sensor and is received by the detector. After the light beam is reflected once, it enters the infrared The detector is thus received, and the leakage sensor determines that no leakage has occurred based on the received light beam. When water leaks in the water tank in the compartment and causes any leakage sensor to be immersed in water, the transmission path of the infrared light is affected, and the corresponding infrared laser emits infrared light. When the infrared light passes through the prism, it is refracted by water, and the detector cannot receive the returned infrared light. The leakage sensor determines that the leakage sensor is immersed in water at this time, and then determines that the water tank is leaking. At this time, the leakage sensor issues a leakage alarm and immediately reports the alarm information to the display panel. The parameters displayed on the display panel can be used to monitor in real time whether the water tank is leaking.

[0008] Preferably, the low-level leakage sensor is fixed to the bottom of the cabin section by installing bolts, so as to detect low-level leakage of the water tank; the high-level leakage sensor is fixed to the top of the cabin section by installing bolts, so as to detect high-level leakage of the water tank; and when the low-level leakage sensor sends an alarm signal, the high-level leakage sensor does not necessarily send an alarm message; when the high-level leakage sensor sends an alarm signal, the low-level leakage sensor should also send an alarm message, otherwise the alarm message will be judged to be incorrect.

[0009] Preferably, the infrared laser inside each leakage sensor is an infrared transmitting module, and the detector is an infrared receiving module, wherein the infrared laser is mounted on the wall of the cabin section through an L-shaped device; the display panel is fixed outside the cabin section and installed in the cockpit, and the water leakage alarm signal is analyzed and displayed on the display screen to provide information for the pilot.

[0010] The present invention also provides a water tank leakage monitoring method based on the system, the method comprising the following steps:

[0011] Step 1: Install the low-level leakage sensor at the bottom of the cabin, the high-level leakage sensor at the top of the cabin, and the display panel in the cockpit, and connect them with cables;

[0012] Step 2: The high-level and low-level leakage sensors and the display panel are powered on respectively, and the self-test results of each leakage sensor are displayed on the display panel. If the displayed results are normal, proceed to the next step; otherwise, repeat the self-test;

[0013] Step 3: When the water tank is not leaking, the display panel shows the inspection result as "normal", indicating that no leakage is detected;

[0014] Step 4: artificially simulate the water tank leakage state and immerse the low-level leakage sensor in water. At this time, the display panel displays the low-level leakage alarm information, indicating that the low-level sensor has detected a leak, reminding the crew to check in time;

[0015] Step five, artificially simulate the water tank leakage state, keep the low-level sensor immersed in water, and immerse the high-level sensor in water. At this time, the display panel simultaneously displays the alarm information of high-level and low-level leakage, indicating that the high-level leakage sensor has detected a leak, reminding the crew to check in time and decide whether to continue the fire-fighting mission.

[0016] The invention also provides a special aircraft mission system designed based on the system.

[0017] The present invention also provides a special aircraft mission design method implemented based on the method.

[0018] (III) Beneficial effects

[0019] The present invention provides a water tank water leakage monitoring system and method based on infrared detection, which performs real-time monitoring of water tank leakage through infrared detection methods, improves the reliability of monitoring results through the cooperation of high and low position sensors, and transmits the detection results to the display panel for display, so as to facilitate the crew to monitor the leakage in real time, improve the efficiency of task completion, and meet the requirements of rapid response and fire fighting. In this scheme, the infrared detection scheme is creatively applied to the detection of water tank leakage of fire-fighting aircraft. The water tank leakage situation can be known through the sensor, and no external analysis equipment is required. The leakage situation is directly reported to the display panel, which has a more intuitive human-computer interaction experience and good real-time performance, which can effectively improve the filling efficiency and has good application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a water tank water leakage monitoring system based on infrared detection of the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples.

[0022] refer to Figure 1 The present invention provides a monitoring system for water tank leakage, including a leakage sensor, a display panel and a cable.

[0023] There are two leakage sensors, namely the high-level leakage sensor fixed on the top of the compartment and the low-level leakage sensor fixed on the bottom of the compartment. The high-level and low-level leakage sensors are used to detect high-level and low-level leakage of the water tank respectively, and both contain infrared lasers, infrared detectors, and prisms. When no leakage occurs, the leakage sensor is located in the air, and the infrared laser emits infrared light, which enters the prism at a preset angle and undergoes total reflection after passing through the prism. After the total reflection process, the light propagates along the reflected light path, returns to the inside of the leakage sensor and is received by the detector. After the light beam is reflected once, it enters the infrared detector and is received. At this time, the leakage sensor determines that no leakage has occurred based on the received light beam. When the water in the compartment is When water leaks in the water tank and causes any leakage sensor to be immersed in water, the transmission path of the infrared light is affected. When the corresponding infrared laser emits infrared light and passes through the prism, it is refracted by water. Due to the difference in refractive index, most of the light energy is transmitted into the water along the refracted light path, resulting in almost no infrared light being received by the detector after one reflection, that is, the detector can hardly receive the returned infrared light. The leakage sensor determines that the leakage sensor is immersed in water through this phenomenon, and then determines that the water tank is leaking. At this time, the leakage sensor issues a leakage alarm and immediately reports the alarm information to the display panel through the RS422 bus data. The parameters displayed on the display panel can be used to monitor in real time whether the water tank is leaking.

[0024] A mounting hole is provided at the bottom of the cabin section, and the low-level leakage sensor is fixed to the bottom of the cabin section by mounting bolts, so as to detect low-level leakage of the water tank. A mounting hole is provided at the top of the cabin section, and the high-level leakage sensor is fixed to the top of the cabin section by mounting bolts, so as to detect high-level leakage of the water tank. When the low-level leakage sensor sends out an alarm signal, the high-level leakage sensor may not send out an alarm message. When the high-level leakage sensor sends out an alarm signal, the low-level leakage sensor should also send out an alarm message, otherwise it will be judged that the alarm message is incorrect.

[0025] The infrared laser inside each leakage sensor is an infrared transmitting module, and the detector is an infrared receiving module. The infrared laser is installed on the wall of the cabin through an L-shaped device. The display panel is fixed to the outside of the cabin and installed in the cockpit. The water leakage alarm signal is analyzed and displayed on the display screen to provide information for the pilot. It has a display screen to facilitate human-computer interaction. Each leakage sensor is connected to the display panel by a cable and can be used for data interaction.

[0026] A water tank leakage monitoring method based on the above system comprises the following steps:

[0027] Step 1: Install the low-level leakage sensor at the bottom of the cabin, the high-level leakage sensor at the top of the cabin, the display panel in the cockpit, and connect them with cables;

[0028] Step 2: The high-level and low-level leakage sensors and the display panel are powered on respectively, and the self-test results of each leakage sensor are displayed on the display panel. If the displayed results are normal, proceed to the next step; otherwise, repeat the self-test;

[0029] Step 3: When the water tank is not leaking, the display panel shows the inspection result as "normal", indicating that no leakage is detected;

[0030] Step 4: artificially simulate the water tank leakage state and immerse the low-level leakage sensor in water. At this time, the display panel displays the low-level leakage alarm information, indicating that the low-level sensor has detected a leak, reminding the crew to check in time;

[0031] Step five, artificially simulate the water tank leakage state, keep the low-level sensor immersed in water, and immerse the high-level sensor in water. At this time, the display panel simultaneously displays the alarm information of high-level and low-level leakage, indicating that the high-level leakage sensor has detected a leak, reminding the crew to check in time and decide whether to continue the fire-fighting mission.

[0032] Traditional water tank leakage monitoring has problems such as inability to monitor in real time and low task completion rate. It is impossible to complete leakage monitoring alone, which may cause mission failure due to leakage and delay the fire extinguishing opportunity. The present invention can independently complete leakage monitoring without the cooperation of other systems and monitor the leakage situation in real time. The leakage sensor is divided into two groups, one installed at the bottom of the cabin section and the other installed at the top of the cabin section. The real-time monitoring of the water tank leakage is completed by infrared detection, and the leakage information can be displayed through the display panel, which is convenient for the crew to grasp the leakage situation and improve the task completion rate.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A water tank leakage monitoring system based on infrared detection, characterized in that: Including leakage sensor, display panel; There are two leakage sensors, a high-level leakage sensor fixed on the top of the compartment and a low-level leakage sensor fixed on the bottom of the compartment. The high-level and low-level leakage sensors are used to detect high-level and low-level leakage of the water tank respectively, and both contain infrared lasers, infrared detectors, and prisms. When no leakage occurs, the leakage sensor is located in the air, and the infrared laser emits infrared light, which enters the prism at a preset angle and undergoes total reflection after passing through the prism. After the total reflection process, the light propagates along the reflected light path, returns to the inside of the leakage sensor and is received by the detector. After the light beam is reflected once, it enters the infrared The detector is thus received, and the leakage sensor determines that no leakage has occurred based on the received light beam. When water leaks in the water tank in the compartment and causes any leakage sensor to be immersed in water, the transmission path of the infrared light is affected, and the corresponding infrared laser emits infrared light. When the infrared light passes through the prism, it is refracted by water, and the detector cannot receive the returned infrared light. The leakage sensor determines that the leakage sensor is immersed in water at this time, and then determines that the water tank is leaking. At this time, the leakage sensor issues a leakage alarm and immediately reports the alarm information to the display panel. The parameters displayed on the display panel can be used to monitor in real time whether the water tank is leaking.

2. The system according to claim 1, characterized in that The low-level leakage sensor is fixed to the bottom of the compartment by installing bolts, and can detect low-level leakage of the water tank. The high-level leakage sensor is fixed to the top of the compartment by installing bolts, and can detect high-level leakage of the water tank. When the low-level leakage sensor sends an alarm signal, the high-level leakage sensor may not necessarily send an alarm message. When the high-level leakage sensor sends an alarm signal, the low-level leakage sensor should also send an alarm message, otherwise the alarm message will be judged to be incorrect.

3. The system according to claim 2, characterized in that The infrared laser inside each leakage sensor is an infrared transmitting module, and the detector is an infrared receiving module. The infrared laser is installed on the cabin wall through an L-shaped device. The display panel is fixed to the outside of the cabin and installed in the cockpit. The water leakage alarm signal is analyzed and displayed on the display screen to provide information for the pilot.

4. The system according to claim 2, characterized in that Each leakage sensor is connected to the display panel via a cable and can be used for data exchange.

5. The system according to claim 4, characterized in that The cable is a RS422 bus.

6. The system according to claim 2, characterized in that The system is applied in the technical field of special aircraft mission systems.

7. A water tank leakage monitoring method implemented based on the system according to any one of claims 2 to 6, characterized in that: The method comprises the following steps: Step 1: Install the low-level leakage sensor at the bottom of the cabin, the high-level leakage sensor at the top of the cabin, the display panel in the cockpit, and connect them with cables; Step 2: The high-level and low-level leakage sensors and the display panel are powered on respectively, and the self-test results of each leakage sensor are displayed on the display panel. If the displayed results are normal, proceed to the next step; otherwise, repeat the self-test; Step 3: When the water tank is not leaking, the display panel shows the inspection result as "normal", indicating that no leakage is detected; Step 4: artificially simulate the water tank leakage state and immerse the low-level leakage sensor in water. At this time, the display panel displays the low-level leakage alarm information, indicating that the low-level sensor has detected a leak, reminding the crew to check in time; Step five, artificially simulate the water tank leakage state, keep the low-level sensor immersed in water, and immerse the high-level sensor in water. At this time, the display panel simultaneously displays the alarm information of high-level and low-level leakage, indicating that the high-level leakage sensor has detected a leak, reminding the crew to check in time and decide whether to continue the fire-fighting mission.

8. The method according to claim 7, characterized in that The method is applied in the technical field of special aircraft mission systems.

9. A special aircraft mission system based on the system design according to any one of claims 1 to 6.

10. A method for designing a special aircraft mission based on the method according to claim 7 or 8.

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