Deicing fluid automatic detection method

Abstract

The invention belongs to the field of airport aircraft deicing, and particularly relates to an automatic deicing fluid detection method which comprises the following steps: a preparation stage: after a vehicle arrives at a detection area and license plate information is identified, an automatic deicing fluid detection device is started; in the detection stage, the deicing fluid in the vehicle is sampled, online detection is conducted on the deicing fluid, the diopter and the particle number of the deicing fluid are obtained, a detection structure is compared with a preset value, and detection data are displayed; and outputting, photographing and storing: displaying a comparison conclusion, and photographing and storing the detected deicing fluid. According to the invention, information of the deicing vehicle is automatically identified, and the system is used for deicing liquid sample collection, autonomous detection, detection result display, liquid applicability judgment and detection result storage. The sampling detection efficiency of the deicing liquid spray gun opening in the deicing vehicle is improved, multiple steps of the whole detection process are optimized to be completed in one station, the existing detection time can be shortened, the liquid adding efficiency is improved, and the guarantee capacity of an airport in winter is improved.

Description

Technical Field

[0001] The invention belongs to the field of airport aircraft deicing, and in particular relates to an automatic detection method for deicing fluid. Background Art

[0002] The Civil Aviation Administration of China has established clear requirements for de-icing fluid management, delivery / receipt inspections, and in-use testing. De-icing fluid must undergo appropriate testing before use. De-icing fluid testing includes visual inspection for contamination, refractive index (freezing point), and pH testing. Before use, de-icing fluid in de-icing vehicles must undergo visual inspection for contamination and refractive index (freezing point) testing, requiring direct sampling from the spray nozzle. Visual inspection for contamination is performed through visual inspection, refractive index testing is performed using a refractometer, and pH testing is performed using a pH meter.

[0003] At present, domestic airports with de-icing and anti-icing conditions still rely mainly on traditional manual testing for de-icing fluid testing. Personnel use samplers to take samples and then send the samples to an indoor constant temperature environment for testing.

[0004] The main defects of the existing detection are as follows: 1. The testing process is inefficient and time-consuming. The current testing method takes 2 minutes to collect the sample, 1 minute to transport it, 5 minutes to test it, and 2 minutes to record it, for a total of about 10 minutes.

[0005] 2. Waste of human resources. The sampling and testing process is completed by dedicated personnel. Each filling station needs to have 1-3 sampling and testing personnel according to different operating conditions. If three filling stations are operating at the same time, 3-9 personnel are required to be responsible for this work.

[0006] 3. Human factors lead to errors. The sample testing process and results are manually recorded. The greater the pressure on operational support, the greater the possibility of human error. Especially in extreme weather conditions such as snow, freezing rain, and freezing fog, the rapid consumption of de-icing fluid requires frequent refilling of de-icing vehicles. At the same time, under time pressure, errors caused by human factors are further highlighted.

[0007] 4. Environmental pollution. The existing process is operated in a non-enclosed environment. Each step of sample collection, transportation, testing, and waste liquid treatment carries the risk of spillage, posing a certain environmental hazard.

[0008] 5. Misoperation may cause burns. Sampling should be done from the nozzle of the deicing fluid spray gun. The standard outlet temperature of the deicing fluid spray gun is above 60°C, but the actual temperature is generally around 80°C. Misoperation may cause burns. Summary of the Invention

[0009] In order to overcome the above problems existing in the existing technology, it is now proposed to build an automated, convenient, efficient, accurate and reliable deicing liquid automatic detection method for sampling the deicing liquid spray gun port in a deicing vehicle.

[0010] In order to achieve the above technical effects, the technical solutions of the present invention are as follows: A method for automatically detecting deicing fluid comprises the following steps: Step S1, preparation stage: after the vehicle arrives at the detection area and the license plate information is recognized, the deicing fluid automatic detection device is started and enters the working state; Step S2, detection phase: sampling the de-icing fluid in the vehicle and performing online detection on the de-icing fluid to obtain the refractive index and particle count of the de-icing fluid, comparing the detection structure with the preset value, and displaying the detection data; Step S3: Output, photograph and store: Display the comparison conclusion, and take photos and store the tested deicing fluid.

[0011] Furthermore, in step S1, the deicing fluid automatic detection device is started by remote control via an infrared remote controller.

[0012] Furthermore, the step S2 includes: Step 1: Draining: Drain the detection chamber of the de-icing fluid automatic detection device; Step 2: Flushing and filling: flush the detection cavity of the deicing fluid automatic detection device with deicing fluid and fill the detection cavity; Step 3: Data collection and analysis: Use an online refractometer to test the deicing fluid in the test chamber, use a particle counter to test the deicing fluid, and compare the test data with the preset value.

[0013] Furthermore, the step S2 includes two modes, namely a timing mode and a liquid level mode.

[0014] Furthermore, when in timing mode, step S2 is specifically as follows: Step 1: Draining: This step takes T1. After the de-icing fluid automatic detection device is activated, the yellow light of the three-color alarm turns on. At this time, the PLC controls the opening of the card-type electric ball valve to discharge the liquid in the detection chamber into the liquid storage tank through the liquid outlet pipe. After T1, the liquid is emptied and enters the flushing step. Step 2: Flushing and filling: The time for this step is T2. At this time, the three-color alarm changes from yellow to green. At the same time, the sound and light alarm starts to flash and emits a prompt sound, prompting the de-icing truck to continue spraying de-icing liquid into the collection box. The de-icing liquid sprayed by the de-icing truck flushes the collection box, the detection chamber, the liquid outlet pipeline, the detection path and the sensor of the online refractometer; at this time, the PLC controls the card-type electric ball valve to remain open, and continuously discharges the flushing liquid in the cavity. The PLC controls the card-type electric ball valve to close. When the detection chamber is full, the three-color alarm changes from green to red, yellow and green, and the sound and light alarm stops working. The de-icing truck stops spraying de-icing liquid, and the red, green and yellow lights are lit at the same time to enter the data collection and analysis stage; Step 3: Data collection and analysis: This step takes T3, the LED screen displays the words "testing", the three-color alarm lights remain red, green and yellow at the same time, the de-icing fluid is left to stand in the test chamber, and the online refractometer starts testing, with the number of tests being N1 times; at the same time, the particle counter inlet pump starts working; the connecting hose and particle counter are flushed, and the particle counter is tested M1 times. After the first test is completed, the next test is started immediately. All test data are compared with the preset values. After the comparison is completed, the red and yellow lights of the three-color alarm go out, and the green light remains on, entering the output, photo taking and storage stage.

[0015] Specifically, the T1 is 10-15 seconds, the T2 is 20-30 seconds, the T3 is 110-130 seconds, the N1 is 2-4, and the M1 is 1-3.

[0016] Furthermore, when in liquid level mode, step S2 is specifically as follows: Step 1: Draining: After the de-icing fluid automatic detection device is activated, the yellow light of the three-color alarm turns on. At this time, the PLC controls the opening of the card-type electric ball valve to discharge the liquid in the detection chamber into the liquid storage tank through the liquid outlet pipe. When the capacitive liquid level sensor detects that the liquid in the detection chamber has been drained and the yellow light of the three-color alarm turns off, the flushing and liquid filling phase begins. Step 2, flushing and liquid filling: The time for this step is Ta, at this time the three-color alarm displays green, and the sound and light alarm works, emits a prompt tone and flashes. During this period, the sound and light alarm keeps working, prompting to spray liquid, and the detection device enters. The new deicing liquid sprayed by the deicing truck flushes the collection box, the detection cavity, the liquid outlet pipeline, the detection path and the sensor of the online refractometer; at this time, the PLC controls the card-type electric ball valve to remain open, and continuously discharges the flushing liquid in the cavity. After Ta, the PLC controls the card-type electric ball valve to close. At this time, continuous spraying is maintained, and the capacitive liquid level sensor senses that the liquid in the detection cavity is full. The three-color alarm light changes from green to red, yellow and green, and the lights are lit at the same time. At the same time, the sound and light alarm stops working, the deicing truck stops spraying deicing liquid, and the red, green and yellow lights are lit at the same time to enter the detection stage; Step 3: Data collection and analysis: This step takes T3. The LED screen displays the word "testing in progress". The three-color alarm lights remain red, green, and yellow. The de-icing fluid is left to stand in the test chamber. The online refractometer starts testing, and the number of tests is N2. At the same time, the particle counter liquid inlet pump starts working to flush the connecting hose and particle counter. The particle counter tests M2 times. After the first test is completed, the next test is started immediately. All test data are compared with the preset values. After the comparison is completed, the red and yellow lights of the three-color alarm go out, and the green light remains on, and the output, photo taking, and storage stage begins.

[0017] Specifically, the Ta is 14-18 seconds, the T3 is 110-130 seconds, N2 is 2-4, and M2 is 1-3.

[0018] The advantages of this application are: 1. This application automatically identifies de-icing vehicle information and is used for de-icing fluid sample collection, autonomous testing, result display, fluid suitability assessment, and result storage. This improves the efficiency of de-icing fluid sampling and testing at the de-icing vehicle's spray gun, optimizing the multiple steps of the entire testing process to a single location, shortening existing testing times. In conjunction with a filling station, this system improves refill efficiency and enhances the airport's winter support capabilities.

[0019] 2. This application can improve the efficiency of de-icing operations: it can realize the integration of sampling, testing, display, and data retention, optimize multiple steps of the entire testing process to be completed within a single station, and shorten the existing testing time from 10 minutes to 4 minutes, so that the de-icing vehicle can be quickly put into de-icing and anti-icing operation. The shortened testing time of a single vehicle is expected to complete the routine de-icing work of 1.5 "C" category aircraft, reduce the time spent by aircraft waiting for de-icing vehicles, and improve the airport's flight punctuality and support capabilities.

[0020] 3. This application can save human resources: Currently, the sampling and testing of de-icing fluid are both done by dedicated personnel. The use of an automatic de-icing fluid detection device can replace the inspectors. Currently, each filling station needs to have one sampling and testing personnel according to different operating conditions. If three filling stations are operated at the same time, three personnel can be reduced. The testing personnel will be on duty in three shifts, reducing a total of nine personnel. Based on labor costs, the annual de-icing season expenditure can be reduced by approximately 100,000 to 300,000 yuan.

[0021] 4. This application can eliminate errors caused by human factors: using standardized equipment for testing can make the test results more accurate, and at the same time automatically display and record the test results, avoiding the impact of human factors on the results from the source.

[0022] 5. This application can avoid injuries to personnel during the inspection process: it can achieve the goal of no ground workers during the entire inspection process, preventing injuries caused by misoperation.

[0023] 6. This application brings environmental and social benefits: the entire process is operated in a closed manner, which greatly reduces the risk of de-icing fluid overflow. At the same time, the waste liquid after detection is automatically collected, which is convenient for subsequent treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure is a flow chart of the automatic detection method of de-icing fluid.

[0025] Figure 2 This is a three-dimensional schematic diagram of the de-icing fluid automatic detection device.

[0026] Figure 3 This is a three-dimensional schematic diagram of the interior of the de-icing fluid automatic detection device.

[0027] Figure 4 This is a three-dimensional schematic diagram of the interior of the de-icing fluid automatic detection device.

[0028] Figure 5 This is the right side view of the interior of the de-icing fluid automatic detection device.

[0029] Figure 6 This is the front view of the interior of the de-icing fluid automatic detection device.

[0030] Figure 7 This is the left side view of the interior of the de-icing fluid automatic detection device.

[0031] Figure 8 This is a three-dimensional schematic diagram of the detection device in the deicing fluid automatic detection device.

[0032] Figure 9 This is a front view of the detection device in the deicing fluid automatic detection device.

[0033] Figure 10 This is a side view of the detection device in the deicing fluid automatic detection device.

[0034] Figure 11 for Figure 9 AA cross-sectional view.

[0035] In the attached figure: 1-Collection box, 2-Display box, 3-Sound and light alarm, 4-Liquid storage tank, 5-Electrical control box, 6-Frame, 7-Tire, 8-Hand crank jack, 9-Particle counter, 10-Particle counter liquid inlet pump, 11-Connecting hose, 12-Vehicle identifier, 13-Three-color alarm, 14-Capacitive liquid level sensor, 15-Waste liquid tank level gauge, 16-Discharge pump outlet pipe, 17-Discharge pump, 18-Discharge pump suction pipe, 19-Discharge pump suction Bottom valve, 20- flow guide tube, 21- detection chamber housing, 22- first square observation window, 23- second square observation window, 24- liquid outlet pipeline, 25- card type electric ball valve, 26- card type manual ball valve, 27- high-definition industrial camera, 28- open surface light source, 29- online refractometer, 30- capacitive liquid level sensor, 31- liquid level sensor sleeve, 32- sampling valve, 33- detection chamber hose interface, 34- detection chamber outlet pipe hose interface. DETAILED DESCRIPTION

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0039] In the description of this application, it should be noted that the terms "upper," "vertical," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0041] Example 1 like Figure 1 As shown, a method for automatically detecting deicing fluid includes the following steps: Step S1, preparation stage: after the vehicle arrives at the detection area and the license plate information is recognized, the deicing fluid automatic detection device is started and enters the working state; Step S2, detection phase: sampling the de-icing fluid in the vehicle and performing online detection on the de-icing fluid to obtain the refractive index and particle count of the de-icing fluid, comparing the detection structure with the preset value, and displaying the detection data; Step S3: Output, photograph and store: Display the comparison conclusion, and take photos and store the tested deicing fluid.

[0042] In step S1, the automatic de-icing fluid detection device is activated via an infrared remote control. The infrared remote control can control the automatic de-icing fluid detection device on and off. Pressing the start button on the remote control puts the automatic de-icing fluid detection device into operation, and pressing the off button on the remote control puts the automatic de-icing fluid detection device into shutdown.

[0043] Furthermore, the step S2 includes: Step 1: Draining: Drain the detection chamber of the de-icing fluid automatic detection device; Step 2: Flushing and filling: flush the detection cavity of the deicing fluid automatic detection device with deicing fluid and fill the detection cavity; Step 3: Data collection and analysis: The de-icing liquid in the detection chamber is detected by an online refractometer, the de-icing liquid is detected by a particle counter 9, and the detection data is compared with the preset value.

[0044] This application automatically identifies de-icing vehicle information and is used for de-icing fluid sample collection, autonomous testing, result display, fluid suitability assessment, and result storage. This improves the efficiency of de-icing fluid sampling and testing at the de-icing vehicle's spray nozzle, streamlining the entire testing process to a single location and reducing testing time. In conjunction with a filling station, this system improves refill efficiency and enhances the airport's winter support capabilities.

[0045] Example 2 like Figure 1 As shown, a method for automatically detecting deicing fluid includes the following steps: Step S1, preparation stage: after the vehicle arrives at the detection area and the license plate information is recognized, the deicing fluid automatic detection device is started and enters the working state; Step S2, detection phase: sampling the de-icing fluid in the vehicle and performing online detection on the de-icing fluid to obtain the refractive index and particle count of the de-icing fluid, comparing the detection structure with the preset value, and displaying the detection data; Step S3: Output, photograph and store: Display the comparison conclusion, and take photos and store the tested deicing fluid.

[0046] In step S1, the automatic de-icing fluid detection device is activated via an infrared remote control. The infrared remote control can control the automatic de-icing fluid detection device on and off. Pressing the start button on the remote control puts the automatic de-icing fluid detection device into operation, and pressing the off button on the remote control puts the automatic de-icing fluid detection device into shutdown.

[0047] Step S2 includes: Step 1: Draining: Drain the detection chamber of the de-icing fluid automatic detection device; Step 2: Flushing and filling: flush the detection cavity of the deicing fluid automatic detection device with deicing fluid and fill the detection cavity; Step 3: Data collection and analysis: The de-icing liquid in the detection chamber is detected by an online refractometer, the de-icing liquid is detected by a particle counter 9, and the detection data is compared with the preset value.

[0048] Step S2 includes two modes, namely timing mode and liquid level mode.

[0049] The time settings for the first and second steps of the timing mode are T1 and T2 respectively. There is no time setting in the first step of the liquid level mode, and the liquid level signal is used as the workflow control. The time is set to Ta in the second step of the liquid level mode, and the time is set to T3 in the third step of both modes. During the working period from the first step to the third step of both modes, the LED screen panel will display the detected license plate number, the refractive index will be displayed as 0, the particle count will be displayed as 0, and the qualified status will be displayed as being tested.

[0050] When in timing mode, step S2 is specifically as follows: Step 1: Draining: This step takes time T1. After the deicing fluid automatic detection device is activated, the yellow light of the three-color alarm 13 turns on. At this time, the PLC controls the opening of the card-type electric ball valve 25, and the liquid in the detection chamber is discharged into the liquid storage tank 4 through the liquid outlet pipe 24. After T1, the liquid is emptied and enters the flushing step; Step 2: Flushing and filling liquid: The time of this step is T2. At this time, the three-color alarm 13 changes from yellow to green. At the same time, the sound and light alarm 3 starts to flash and emits a prompt sound, prompting the de-icing vehicle to continue spraying de-icing liquid into the collection box 1. The de-icing liquid sprayed by the de-icing vehicle flushes the collection box 1, the detection chamber, the liquid outlet pipe 24, the detection path and the sensor of the online refractometer 29; at this time, the PLC controls the card-type electric ball valve 25 to remain open, and the flushing liquid in the cavity is continuously discharged. The PLC controls the card-type electric ball valve 25 to close. When the detection chamber is full, the three-color alarm 13 changes from green to red, yellow and green. The lights are lit at the same time. At the same time, the sound and light alarm 3 stops working, the de-icing vehicle stops spraying de-icing liquid, and the red, green and yellow lights are lit at the same time to enter the data collection and analysis stage; Step 3: Data collection and analysis: This step takes T3, the LED screen displays the words "testing", the three-color alarm lights remain red, green and yellow at the same time, the deicing fluid is left to stand in the test chamber, and the online refractometer 29 starts testing, with the number of tests being N1 times; at the same time, the particle counter inlet pump 10 starts working; the connecting hose 11 and the particle counter 9 are flushed, and the particle counter 9 performs tests M1 times. After the first test is completed, the next test is started immediately. All test data are compared with the preset values. After the comparison is completed, the red and yellow lights of the three-color alarm 13 go out, and the green light remains on, and the output, photo taking and storage stage begins.

[0051] Specifically, the T1 is 10-15 seconds, the T2 is 20-30 seconds, the T3 is 110-130 seconds, the N1 is 2-4, and the M1 is 1-3.

[0052] Example 3 like Figure 1 As shown, a method for automatically detecting deicing fluid includes the following steps: Step S1, preparation stage: after the vehicle arrives at the detection area and the license plate information is recognized, the deicing fluid automatic detection device is started and enters the working state; Step S2, detection phase: sampling the de-icing fluid in the vehicle and performing online detection on the de-icing fluid to obtain the refractive index and particle count of the de-icing fluid, comparing the detection structure with the preset value, and displaying the detection data; Step S3: Output, photograph and store: Display the comparison conclusion, and take photos and store the tested deicing fluid.

[0053] Furthermore, in step S1, the automatic de-icing fluid detection device is remotely activated via an infrared remote controller. The infrared remote controller can control the on and off of the automatic de-icing fluid detection device. Pressing the start button on the remote controller causes the automatic de-icing fluid detection device to enter an operating state, and pressing the off button on the remote controller causes the automatic de-icing fluid detection device to enter an off state.

[0054] Step S2 includes: Step 1: Draining: Drain the detection chamber of the de-icing fluid automatic detection device; Step 2: Flushing and filling: flush the detection cavity of the deicing fluid automatic detection device with deicing fluid and fill the detection cavity; Step 3: Data collection and analysis: The de-icing liquid in the detection chamber is detected by an online refractometer, the de-icing liquid is detected by a particle counter 9, and the detection data is compared with the preset value.

[0055] Step S2 includes two modes, namely timing mode and liquid level mode.

[0056] The time settings for the first and second steps of the timing mode are T1 and T2 respectively. There is no time setting in the first step of the liquid level mode, and the liquid level signal is used as the workflow control. The time is set to Ta in the second step of the liquid level mode, and the time is set to T3 in the third step of both modes. During the working period from the first step to the third step of both modes, the LED screen panel will display the detected license plate number, the refractive index will be displayed as 0, the particle count will be displayed as 0, and the qualified status will be displayed as being tested.

[0057] When in liquid level mode, step S2 is specifically as follows: Step 1: Draining: After the de-icing fluid automatic detection device is activated, the yellow light of the three-color alarm 13 turns on. At this time, the PLC controls the opening of the card-type electric ball valve 25, and the liquid in the detection chamber is discharged into the liquid storage tank 4 through the liquid outlet pipe 24. When the capacitive liquid level sensor 14 detects that the liquid in the detection chamber has been emptied and the yellow light of the three-color alarm 13 goes out, the flushing and liquid filling phase begins; Step 2, flushing and liquid feeding: The time for this step is Ta, at this time the three-color alarm 13 displays green, and the sound and light alarm 3 works, emits a prompt sound and flashes. During this period, the sound and light alarm 3 has been working, prompting to spray liquid, and the detection device enters. The new deicing liquid sprayed by the deicing vehicle flushes the collection box 1, the detection cavity, the liquid outlet pipeline 24, and the sensor of the detection path and the online refractometer 29; at this time, the PLC controls the card-type electric ball valve 25 to remain open, and the flushing liquid in the cavity is continuously discharged. After Ta, the PLC controls the card-type electric ball valve 25 to close. At this time, continuous spraying is maintained, and the capacitive liquid level sensor 14 senses that the liquid in the detection cavity is full. The three-color alarm light changes from green to red, yellow and green, and lights up at the same time. At the same time, the sound and light alarm 3 stops working, and the deicing vehicle stops spraying deicing liquid. The red, green and yellow colors light up at the same time to enter the detection stage; Step 3: Data collection and analysis: This step takes T3. The LED screen displays the word "testing in progress". The three-color alarm lights remain red, green, and yellow. The de-icing fluid is left to stand in the test chamber. The online refractometer 29 starts testing, and the number of tests is N2. At the same time, the particle counter liquid inlet pump 10 starts working to flush the connecting hose 11 and the particle counter 9. The particle counter 9 performs tests M2 times. After the first test is completed, the next test is started immediately. All test data are compared with the preset values. After the comparison is completed, the red and yellow lights of the three-color alarm 13 go out, and the green light remains on, and the output, photo taking, and storage stage begins.

[0058] Specifically, the Ta is 14-18 seconds, the T3 is 110-130 seconds, N2 is 2-4, and M2 is 1-3.

[0059] Example 4 Step S1, preparation stage: after the vehicle arrives at the detection area and the license plate information is recognized, the deicing fluid automatic detection device is started and enters the working state; This method includes two detection modes, namely, timing mode and liquid level mode. Steps S1 and S3 of the two modes are the same, and the third step in step S2 works the same.

[0060] Step S2. The detection phase consists of three steps. The first and second steps of the timing mode are set to T1 and T2 respectively. In the liquid level mode, there is no time setting in the first step, and the liquid level signal is used as the workflow control. The second step of the liquid level mode is set to time Ta. The third step of both modes is set to time T3. During the first to third steps of both modes, the LED screen panel will display the detected license plate number, the refractive index will be displayed as 0, the particle count will be displayed as 0, and the qualified status will be displayed as being detected.

[0061] The de-icing fluid automatic detection device can check the working status on the operation interface during detection.

[0062] Step S2. Detection phase: 1. Timing mode workflow: Step 1: Draining: This step takes T1. After the deicing fluid automatic detection device is activated, the yellow light of the three-color alarm 13 turns on. At this time, the PLC controls the opening of the card-type electric ball valve 25 to discharge the liquid in the detection chamber into the liquid storage tank 4 through the liquid outlet pipe 24. The T1 time is 13 seconds. After T1, the liquid is emptied and enters the flushing phase.

[0063] Step 2: Flushing and filling: The time for this step is T2, which is 25 seconds. At this time, the three-color alarm 13 changes from yellow to green, and the sound and light alarm 3 starts to flash and emits a prompt sound, prompting the de-icing vehicle to continue spraying de-icing liquid into the collection box 1. The de-icing liquid sprayed by the de-icing vehicle flushes the collection box 1, the detection chamber, the liquid outlet pipe 24, the detection path and the sensor of the online refractometer 29; at this time, the PLC controls the card-type electric ball valve 25 to remain open, and continuously discharges the flushing liquid in the cavity. After 16 seconds, the PLC controls the card-type electric ball valve 25 to close. After 9 seconds, the detection chamber is full, and the three-color alarm 13 changes from green to red, yellow and green lights at the same time. At the same time, the sound and light alarm 3 stops working, the de-icing vehicle stops spraying de-icing liquid, and the red, green and yellow lights are lit at the same time to enter the data collection and analysis stage.

[0064] Step 3: Data Collection and Analysis: This step takes 115 seconds (T3). The LED screen displays "Testing in Progress" and the three-color alarm lights remain illuminated simultaneously, red, green, and yellow. The de-icing fluid remains stationary in the test chamber until the 50th second. The online refractometer 29 begins testing three times. Simultaneously, at the 50th second, the particle counter inlet pump 10 begins operating. The connecting hose 11 and particle counter 9 are flushed. After 20 seconds, the particle counter 9 performs two tests, each lasting 22-25 seconds. After the first test, the second test is immediately initiated. All test data is compared with the preset values. Once the comparison is complete, the red and yellow lights of the three-color alarm 13 go out, leaving the green light on continuously. The data then enters the output, photo, and storage phase.

[0065] Step S3. Output, take photos and store: At this time, the LED displays the refractive index detection contaminant detection "qualified" or "unqualified", and at the same time, the high-definition industrial camera 27 takes photos of the liquid in the cavity, with each photo being taken at an interval of 2 seconds and completing 3 photos within 5 seconds. The detection data and photos are automatically uploaded to the remote computer and stored.

[0066] The single detection process is completed.

[0067] 2. Liquid Level Mode Workflow Step 1: Draining: After the de-icing fluid automatic detection device is started, the yellow light of the three-color alarm 13 turns on. At this time, the PLC controls the opening of the card-type electric ball valve 25 to discharge the liquid in the detection chamber into the liquid storage tank 4 through the liquid outlet pipe 24. When the capacitive liquid level sensor 14 senses that the liquid in the detection chamber has been emptied and the yellow light of the three-color alarm 13 goes out, the flushing and liquid filling phase begins.

[0068] Step 2, flushing and liquid filling: The time for this step is Ta. At this time, the three-color alarm 13 displays green, and the sound and light alarm 3 works, emits a prompt sound and flashes. During this period, the sound and light alarm 3 has been working, prompting to spray liquid, and the detection device enters. The new deicing liquid sprayed by the deicing truck flushes the collection box 1, the detection cavity, the liquid outlet pipeline 24, and the detection path and the sensor of the online refractometer 29; at this time, the PLC controls the card-type electric ball valve 25 to remain open, and the flushing liquid in the cavity is continuously discharged. Ta is 16 seconds. After Ta, the PLC controls the card-type electric ball valve 25 to close. At this time, continuous spraying is maintained, and the capacitive liquid level sensor 14 senses that the liquid in the detection cavity is full. The three-color alarm light changes from green to red, yellow and green lights, and the sound and light alarm 3 stops working. The deicing truck stops spraying deicing liquid, and the red, green and yellow lights are lit at the same time to enter the detection stage.

[0069] Step 3: Data Collection and Analysis: This step takes time T3. The LED screen displays "Testing in Progress" and the three-color alarm lights remain illuminated simultaneously, red, green, and yellow. T3 is 115 seconds. The de-icing fluid remains stationary in the test chamber until the 50th second, at which point the online refractometer 29 begins testing three times. Simultaneously, at the 50th second, the particle counter inlet pump 10 begins operating. The connecting hose 11 and particle counter 9 are flushed. After 20 seconds, the particle counter 9 performs two tests, each lasting 22-25 seconds. After the first test, the second test is immediately initiated. All test data is compared with preset values. Once the comparison is complete, the red and yellow lights of the three-color alarm 13 go out, leaving the green light on continuously, and the output, photo, and storage phase begins.

[0070] Step S3. Output, take photos and store: At this time, the LED displays the refractive index detection contaminant detection "qualified" or "unqualified", and at the same time, the high-definition industrial camera 27 takes photos of the liquid in the cavity, with each photo being taken at an interval of 2 seconds and completing 3 photos within 5 seconds. The detection data and photos are automatically uploaded to the remote computer and stored.

[0071] The single detection process is completed.

[0072] Fault display: During the initialization process of the device, the device will perform a self-check on the overall power supply of the equipment and the working condition of the sensor. After passing the self-check, it will enter the standby state. If it fails, a red message will be displayed on the control computer, and the PLC screen will display the corresponding fault text information.

[0073] Working status display: During the entire working process, the indicator light serves as an indication of the working status. The PLC screen can view the working status of each component, valve position, liquid in the detection chamber, detection value and other detailed parameters in real time.

[0074] When the capacitive liquid level sensor 14 senses that the liquid storage tank 4 is full, the liquid discharge pump 17 is automatically started to discharge the de-icing liquid to the outside of the equipment. The entire detection process is completed by electronic control. The outer surface of the detection chamber is covered with a heating belt to ensure that the detection environment meets the technical requirements.

[0075] Example 5 On the basis of Examples 1-4, the device for implementing the present method is an automatic de-icing fluid detection device, which includes a sample collection device, a detection device, a control device, a recovery device and a chassis device, on which the collection device, the detection device, the control device and the recovery device are respectively installed; the collection device is used for collecting liquid; the detection device is used for detecting the refractive index of the liquid and the particles in the liquid; the control device is used to control the operation of each component in the detection device; the recovery device is used for storing and emptying waste liquid; the chassis device is used to carry the entire device, and to pull and fix it; the collection device is connected to the detection device, a control device is provided in the detection device, and the detection device is connected to the recovery device.

[0076] The sample collection device includes a collection box 1, in which a sampling collection trough is provided. The sampling collection trough is provided with a sampling port and an overflow port. The collection trough is connected to the detection cavity through a pipeline, and the overflow port is connected to the waste liquid recovery storage tank 4 through a guide tube 20.

[0077] The detection device includes a detection chamber, a capacitive liquid level sensor 14, an online refractive index detector 29 and a particle counter 9; the detection chamber is connected to a connecting hose 11, and the connecting hose 11 is connected to the particle counter 9 through a particle counter liquid inlet pump 10. A capacitive liquid level sensor 14 is arranged inside the detection chamber, and an online refractive index detector 29 is arranged on the side of the detection chamber. The sensor of the online refractive index detector 29 is located inside the detection chamber housing 21.

[0078] The detection chamber includes a detection chamber shell 21, the top of the detection chamber shell 21 is connected to a liquid inlet pipeline, and the bottom of the detection chamber shell 21 is connected to a liquid outlet pipeline 24. The two sides of the detection chamber shell 21 are respectively provided with a first square observation window 22 and a second square observation window 23. The first square observation window 22 and the second square observation window 23 are both provided with high-transmittance glass. The second square observation window 23 is externally connected to a high-definition industrial camera 27 and an open surface light source 28. A card-type manual ball valve 26 and a card-type electric ball valve 25 are installed in sequence on the liquid outlet pipeline 24, and a sampling valve 32 is connected to one side of the detection chamber shell 21.

[0079] A liquid level sensor sleeve 31 is connected to the outer surface of the capacitive liquid level sensor 14 . The liquid level sensor sleeve 31 is located inside the detection chamber housing 21 .

[0080] A detection chamber hose interface 33 is further provided on the outside of the detection chamber housing 21 , and a detection chamber water outlet hose interface 34 is provided on the liquid outlet pipeline 24 .

[0081] The capacitive liquid level sensor 14 is used to detect the measurement in the cavity. The liquid in the detection cavity reaches the granule counter liquid inlet pump through the connecting hose 11. The granule counter liquid inlet pump pressurizes the liquid and sends it to the particle counter 9 through the hose. The particle counter 9 is used to measure the particles in the liquid and count them.

[0082] A card-type electric ball valve 25 and a card-type manual ball valve 26 are installed on the liquid outlet pipeline 24. The card-type electric ball valve 25 can be automatically opened and closed under PLC control, while the card-type manual ball valve 26 can be opened and closed manually. These two ball valves are used to control the inflow and outflow of liquid into the detection chamber. The first square observation window 22 and the second square observation window 23 are openings in the detection chamber housing 21 and are equipped with high-transmittance glass. The first square observation window 22 is used for visual observation. A high-definition industrial camera 27 takes pictures of the detection chamber through the second square observation window 23. An open surface light source 28 is installed on the detection chamber housing 21 to provide illumination inside the opening. An online refractometer 29 is installed on the detection chamber housing 21, and its sensor penetrates deep into the detection chamber housing 21 to collect data and measure refractive index. The detection chamber hose interface 33 and the detection chamber outlet hose interface 34 are respectively used to connect to the connecting hose 11. The detection chamber hose interface 33 is used to draw liquid from the particle counter 9, and the detection chamber outlet hose interface 34 is used to drain the particle counter 9.

[0083] The control device includes an electric control box 5, in which a PLC is installed. A display screen box 2 is provided at one end of the electric control box 5, in which a display screen is installed. A vehicle identifier 12 is installed on the outside of the electric control box 5. A three-color alarm 13 and an audible and visual alarm 3 are installed on the outside of the upper surface of the waste liquid recovery storage tank 4 for indicating various stages of work. The display screen, three-color alarm 13, and audible and visual alarm 3 are all connected to the PLC signal.

[0084] A display screen is installed inside the display box 2 for displaying the test parameters and results. The vehicle identifier 12 is used to detect the identification of the vehicle. Vehicle identification is an existing device for identifying license plate cards by wireless transmission. If the interface protocol is a non-standard protocol, data collection can be performed by setting a communication card converted to a standard protocol in the detection box. The three-color warning light and the sound and light alarm 3 are used to indicate the working stage.

[0085] The recovery device includes a waste liquid recovery storage tank 4, on which a waste liquid tank level gauge 15 is provided. A drainage pump 17 is installed on the external upper surface of the waste liquid recovery storage tank 4. A drainage pump suction pipe 18 and a drainage pump suction pipe bottom valve 19 are installed inside the storage tank 4. The drainage pump suction pipe 18 and the drainage pump suction pipe bottom valve 19 are connected to the inlet of the drainage pump 17, and the outlet of the drainage pump 17 is connected to the drainage pump outlet pipe 16.

[0086] The waste liquid is pumped out through the bottom valve 19 of the drainage pump suction pipe, the drainage pump suction pipe 18 and the drainage pump 17, and discharged to the outside of the device through the drainage pump outlet pipe 16.

[0087] The chassis unit includes a vehicle frame 6 , a tire 7 and a hand jack 8 , wherein the tire 7 and the hand jack 8 are mounted on the vehicle frame 6 .

[0088] The tire 7 is used for towing, the hand jack 8 can be used for support and fixation, and the front section of the frame 6 can be used for traction connection and direction control of the device.

[0089] The working principle of this device is to detect the refractive index of the liquid through the online refractometer 29, and obtain the freezing point value through the deicing liquid refractive index, concentration, and freezing point comparison table; and detect the turbidity of the liquid through the particle counter 9 to perform vehicle identification.

[0090] This device can be operated in either automatic or manual mode, with the panel selector switch enabling automatic / manual switching. In manual mode, system linkage and analysis are not possible, making it suitable for controlling a single device. In automatic mode, the system performs analysis and testing according to a pre-set sequence and outputs the test results.

Claims

1. A method for automatically detecting deicing fluid, characterized in that: The steps include: Step S1, preparation stage: after the vehicle arrives at the detection area and the license plate information is recognized, the deicing fluid automatic detection device is started and enters the working state; Step S2, detection phase: sampling the de-icing fluid in the vehicle and performing online detection on the de-icing fluid to obtain the refractive index and particle count of the de-icing fluid, comparing the detection structure with the preset value, and displaying the detection data; Step S3: Output, photograph and store: Display the comparison conclusion, and take photos and store the tested deicing fluid.

2. The automatic detection method for deicing fluid according to claim 1, characterized in that: In step S1, the deicing fluid automatic detection device is started by remote control via an infrared remote controller.

3. The automatic detection method for deicing fluid according to claim 1, characterized in that: The step S2 comprises: Step 1: Draining: Drain the detection chamber of the de-icing fluid automatic detection device; Step 2: Flushing and filling: flush the detection cavity of the deicing fluid automatic detection device with deicing fluid and fill the detection cavity; Step 3: Data collection and analysis: The deicing liquid in the detection chamber is detected by an online refractometer, the deicing liquid is detected by a particle counter (9), and the detection data is compared with the preset value.

4. The automatic detection method for deicing fluid according to claim 3, characterized in that: The step S2 includes two modes, namely a timing mode and a liquid level mode.

5. The automatic detection method for deicing fluid according to claim 4, characterized in that: When in timing mode, step S2 is specifically as follows: Step 1: Draining: This step takes time T1. After the de-icing liquid automatic detection device is activated, the yellow light of the three-color alarm (13) turns on. At this time, the PLC controls the opening of the card-type electric ball valve (25) to discharge the liquid in the detection chamber into the liquid storage tank (4) through the liquid outlet pipe (24). After T1, the liquid is emptied and enters the flushing step; Step 2, flushing and liquid filling: The time of this step is T2, at which time the three-color alarm (13) changes from yellow to green, and the sound and light alarm (3) starts flashing and emits a prompt sound, prompting the de-icing vehicle to continue spraying de-icing liquid into the collection box (1). The de-icing liquid sprayed by the de-icing vehicle flushes the collection box (1), the detection chamber, the liquid outlet pipe (24), the detection path and the sensor of the online refractive index detector (29); at this time, the PLC controls the card-type electric ball valve (25) to remain open, and the flushing liquid in the chamber is continuously discharged. The PLC controls the card-type electric ball valve (25) to close. When the detection chamber is full, the three-color alarm (13) changes from green to red, yellow and green, and lights up at the same time. At the same time, the sound and light alarm (3) stops working, the de-icing vehicle stops spraying de-icing liquid, and the red, green and yellow lights up at the same time to enter the data collection and analysis stage; Step 3, data collection and analysis: This step takes T3, the LED screen displays the words "testing", the three-color alarm light remains red, green and yellow at the same time, the de-icing fluid is left in the test chamber, the online refractometer (29) starts testing, and the number of tests is N1 times; at the same time, the particle counter liquid inlet pump (10) starts working; the connecting hose (11) and the particle counter (9) are flushed, and the particle counter (9) is tested M1 times. After the first test is completed, the next test is immediately started. All test data are compared with the preset value. After the comparison is completed, the red and yellow lights of the three-color alarm (13) are turned off, and the green light is continuously lit, and the output photo storage stage is entered.

6. The automatic detection method for deicing fluid according to claim 5, characterized in that: The T1 is 10-15 seconds, the T2 is 20-30 seconds, the T3 is 110-130 seconds, the N1 is 2-4, and the M1 is 1-3.

7. The automatic detection method for deicing fluid according to claim 4, characterized in that: When in liquid level mode, step S2 is specifically as follows: Step 1: Draining: After the de-icing liquid automatic detection device is started, the yellow light of the three-color alarm (13) turns on. At this time, the PLC controls the opening of the card-type electric ball valve (25) to discharge the liquid in the detection chamber into the liquid storage tank (4) through the liquid outlet pipe (24). When the capacitive liquid level sensor (14) senses that the liquid in the detection chamber has been drained and the yellow light of the three-color alarm (13) goes out, the flushing and liquid filling phase begins; Step 2, flushing and liquid feeding: The time of this step is Ta, at which time the three-color alarm (13) displays green, and the sound and light alarm (3) works, emits a prompt sound and flashes. During this period, the sound and light alarm (3) keeps working, prompting the spraying of liquid, and the detection device enters. The new deicing liquid sprayed by the deicing vehicle flushes the collection box (1), the detection chamber, the liquid outlet pipe (24), the detection path and the sensor of the online refractive index detector (29); at this time, the PLC controls the card-type electric ball valve (25) to remain open, and the flushing liquid in the cavity is continuously discharged. After Ta, the PLC controls the card-type electric ball valve (25) to close. At this time, the continuous spraying is maintained, and the capacitive liquid level sensor (14) senses that the liquid in the detection chamber is full. The three-color alarm light changes from green to red, yellow and green lights at the same time, and the sound and light alarm (3) stops working. The deicing vehicle stops spraying deicing liquid, and the red, green and yellow lights are lit at the same time to enter the detection stage; Step 3, data collection and analysis: This step takes T3, the LED screen displays the word "testing", the three-color alarm light remains red, green and yellow at the same time, the de-icing fluid is left in the test chamber, and the online refractometer (29) starts testing, with the number of tests being N2 times; at the same time, the particle counter liquid inlet pump (10) starts working, flushing the connecting hose (11) and the particle counter (9), and the particle counter (9) performs tests M2 times. After the first test is completed, the next test is immediately started, and all test data are compared with the preset value. After the comparison is completed, the red and yellow lights of the three-color alarm (13) go out, and the green light remains on, and the output, photo taking and storage stage is entered.

8. The automatic detection method for deicing fluid according to claim 7, characterized in that: The Ta is 14-18 seconds, the T3 is 110-130 seconds, N2 is 2-4, and M2 is 1-3.

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