A hazardous chemicals vehicle operation monitoring device and system

Abstract

The present invention discloses a hazardous chemical vehicle operation monitoring device and system. The monitoring system includes a task vehicle, a monitoring module, a data processing module and road auxiliary equipment. A first monitoring mechanism and a second monitoring mechanism are set to monitor the hazardous chemical vehicle in real time. The first monitoring mechanism collects vibration signals and acoustic emission signals before and after parking, and performs comparison analysis to realize parking leakage detection. Parking leakage detection is performed every time the vehicle stops, so as to facilitate the supervision of theft during the transportation of hazardous chemicals, and the stolen location is known by obtaining parking positioning information, so as to facilitate subsequent investigation. The second monitoring mechanism detects in real time whether the storage tank is leaking liquid and gas during the driving of the vehicle, and cooperates with the data processing module and the road auxiliary equipment to provide driving guidance for the hazardous vehicle, guide it to drive to an open position, and warn other vehicles to stay away from the hazardous vehicle, thereby improving safety.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle management, and in particular to a hazardous chemicals vehicle operation monitoring device and system. Background Art

[0002] Vehicles carrying hazardous chemicals can be seen everywhere on the road. Before and after filling, operators inspect them and send them out for transportation after eliminating any danger. Real-time detection and detection of dangers cannot be carried out during transportation. In addition, the monitoring of hazardous chemical vehicles currently only involves setting up monitoring devices in the driving area to monitor the driver's driving safety. The overall condition of the vehicle cannot be monitored, let alone warning the driver and nearby vehicles based on the vehicle's condition. There is a high safety hazard. Summary of the invention

[0003] The purpose of the present invention is to provide a hazardous chemicals vehicle operation monitoring device and system to address the deficiencies of the prior art.

[0004] The technical solution of the present invention to solve the above problems is: a hazardous chemicals vehicle operation monitoring device, including a task vehicle and a monitoring module;

[0005] The task vehicle comprises a vehicle body and a storage tank fixedly arranged in the vehicle body, and a display screen is arranged in the vehicle body;

[0006] The monitoring module includes a first monitoring mechanism, a second monitoring mechanism and a processor; the first monitoring mechanism includes a vibration sensor and an acoustic emission sensor, and the vibration sensor and the acoustic emission sensor are arranged on the surface of the storage tank; the second monitoring mechanism includes an air pressure sensor and a piezoelectric film sensor; an inverted U-shaped tube is provided on the top of the storage tank, and the two ends of the inverted U-shaped tube are respectively connected to the storage tank, and the top of the inverted U-shaped tube is connected to the detection tube, the air pressure sensor is arranged on the inner wall of the detection tube, and the piezoelectric film sensor is arranged below the storage tank, and the vibration sensor, acoustic emission sensor, air pressure sensor and piezoelectric film sensor are respectively connected to the processor; the display screen is connected to the processor.

[0007] Furthermore, a positioning device is provided in the vehicle body, and a parking leakage detection is performed each time the task vehicle stops, and the parking leakage detection includes the following steps:

[0008] Step 1, obtaining a first vibration signal and a first acoustic emission signal before the task vehicle stops, obtaining a second vibration signal and a second acoustic emission signal after the task vehicle restarts, and obtaining positioning information of the parking location, the first vibration signal and the first acoustic emission signal are obtained before deceleration, and the second vibration signal and the second acoustic emission signal are obtained when driving steadily after acceleration;

[0009] Step 2, performing noise reduction processing on the first vibration signal and the first acoustic emission signal, and extracting features from the first vibration signal and the first acoustic emission signal after noise reduction, performing noise reduction processing on the second vibration signal and the second acoustic emission signal, and extracting signal features from the second vibration signal and the second acoustic emission signal after noise reduction;

[0010] Step 3, using a BP neural network to preliminarily identify signal features in the first vibration signal, the first acoustic emission signal, the second vibration signal, and the second acoustic emission signal;

[0011] Step 4, fusing the recognition results of the first vibration signal, the first acoustic emission signal, the second vibration signal, and the second acoustic emission signal to confirm the leakage result.

[0012] A hazardous chemicals vehicle operation monitoring system includes the above hazardous chemicals vehicle operation monitoring device, a data processing module and road auxiliary equipment.

[0013] The processor of the hazardous chemicals vehicle operation monitoring device is connected to the data processing module;

[0014] The road auxiliary equipment includes multiple groups of auxiliary equipment units. Each traffic light at an intersection and on the side of the highway is equipped with an auxiliary equipment unit. Each group of auxiliary equipment units includes a camera and a voice alarm announcer. The multiple groups of auxiliary equipment units are respectively connected to the data processing modules.

[0015] Furthermore, when the vehicle is driving, the air pressure in the tank is detected by the air pressure sensor. When the storage tank leaks air or liquid, the air pressure in the tank will change. When the air pressure sensor detects the change in the air pressure in the tank, the processor sends a danger signal and positioning information to the data processing module. When the storage tank leaks liquid, the liquid drips down the storage tank and is detected by the piezoelectric film sensor arranged under the storage tank. The processor sends a danger signal and positioning information to the data processing module.

[0016] Furthermore, after receiving the danger signal and the positioning information of the vehicle, the data processing module obtains the images of the two front and rear cameras closest to the vehicle. First, it provides driving guidance for the vehicle, guides it to drive to an open position, and sends the position information of the open position to the processor. The processor then displays the position information of the open position on the display screen. The selection of the open position is based on the camera shooting picture. If the open position cannot be found in the two camera shooting pictures, the picture of the farther camera is retrieved for selection. The open position can also be manually specified. At the same time, according to the changes in the camera shooting pictures and the positioning information, the driving direction of the vehicle is judged, and then according to the driving direction of the vehicle, the number of the auxiliary equipment unit in front of the driving direction is obtained, and other vehicles are warned to leave and the driving guidance and turning information of the dangerous vehicle is broadcast through a voice alarm announcer. Then, the number of the auxiliary equipment unit behind the driving direction is obtained, and other vehicles are warned to change direction through a voice alarm announcer.

[0017] The present invention has the beneficial effects:

[0018] The present invention provides a hazardous chemical vehicle operation monitoring device and system. A first monitoring mechanism and a second monitoring mechanism are set to perform real-time monitoring of a driving hazardous chemical vehicle. The first monitoring mechanism collects vibration signals and acoustic emission signals before and after parking, and performs comparative analysis to realize parking leakage detection. Parking leakage detection is performed every time the vehicle stops, so as to facilitate the supervision of theft during the transportation of hazardous chemicals, and the stolen location is known by obtaining parking positioning information, so as to facilitate subsequent investigation. The second monitoring mechanism detects in real time whether the storage tank is leaking liquid and gas during the driving of the vehicle, and cooperates with the data processing module and the road auxiliary equipment to provide driving guidance for the dangerous vehicle, guide it to drive to an open position, and warn other vehicles to stay away from the dangerous vehicle, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the mission vehicle;

[0020] Figure 2 Control diagram for monitoring system;

[0021] In the figure: 1-vehicle body, 2-storage tank, 3-positioning device, 4-display screen, 5-processor, 6-vibration sensor, 7-acoustic emission sensor, 8-air pressure sensor, 9-piezoelectric film sensor, 10-inverted U-shaped tube, 11-detection tube, 12-data processing module, 13-auxiliary equipment unit, 14-camera, 15-voice alarm announcer. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] As shown in the figure, a hazardous chemicals vehicle operation monitoring device includes a task vehicle and a monitoring module;

[0024] The monitoring module includes a first monitoring mechanism, a second monitoring mechanism and a processor 5; the first monitoring mechanism includes a vibration sensor 6 and an acoustic emission sensor 7, the second monitoring mechanism includes an air pressure sensor 8 and a piezoelectric film sensor 9, and the vibration sensor 6, the acoustic emission sensor 7, the air pressure sensor 8 and the piezoelectric film sensor 9 are respectively connected to the processor 5.

[0025] The task vehicle includes a vehicle body 1 and a storage tank 2 fixedly arranged in the vehicle body 1, a positioning device 3 and a display screen 4 are arranged in the vehicle body 1, the positioning device 3 and the display screen 4 are respectively connected to a processor 5, the display screen 4 is arranged in the cab, the storage tank 2 is installed in the vehicle body 1 through a shock absorbing mechanism, the vibration sensor 6 and the acoustic emission sensor 7 are arranged on the surface of the storage tank 2, an inverted U-shaped tube 10 is arranged on the top of the storage tank 2, the two ends of the inverted U-shaped tube 10 are respectively connected to the storage tank 2, the top of the inverted U-shaped tube 10 is connected to the detection tube 11, the air pressure sensor 8 is arranged on the inner wall of the detection tube 11, and the piezoelectric film sensor 9 is arranged below the storage tank 2.

[0026] When the vehicle is driving, the air pressure in the tank is detected by the air pressure sensor 8. When the storage tank 2 leaks air or liquid, the air pressure in the tank will change. When the air pressure sensor 8 detects the change in the air pressure in the tank, the processor 5 displays a danger signal on the display screen 4. When the storage tank 2 leaks liquid, the liquid drips down the storage tank 2 and is detected by the piezoelectric film sensor 9 arranged under the storage tank 2. The processor 5 displays a danger signal on the display screen 4.

[0027] A parking leakage test is performed each time the mission vehicle stops. The parking leakage test includes the following steps:

[0028] Step 1, obtaining a first vibration signal and a first acoustic emission signal before the task vehicle stops, obtaining a second vibration signal and a second acoustic emission signal after the task vehicle restarts, and obtaining positioning information of the parking location, the first vibration signal and the first acoustic emission signal are obtained before deceleration, and the second vibration signal and the second acoustic emission signal are obtained when driving steadily after acceleration;

[0029] Step 2, performing noise reduction processing on the first vibration signal and the first acoustic emission signal, and extracting features from the first vibration signal and the first acoustic emission signal after noise reduction, performing noise reduction processing on the second vibration signal and the second acoustic emission signal, and extracting signal features from the second vibration signal and the second acoustic emission signal after noise reduction;

[0030] Step 3, using a BP neural network to preliminarily identify signal features in the first vibration signal, the first acoustic emission signal, the second vibration signal, and the second acoustic emission signal;

[0031] Step 4, fusing the recognition results of the first vibration signal, the first acoustic emission signal, the second vibration signal, and the second acoustic emission signal to confirm the leakage result.

[0032] By conducting leakage detection at each stop, it is easier to monitor the theft of hazardous chemicals during transportation. By obtaining stop positioning information, the location of the theft can be known, which facilitates subsequent investigations.

[0033] A hazardous chemical vehicle operation monitoring system comprises the above-mentioned hazardous chemical vehicle operation monitoring device, a data processing module 12 and road auxiliary equipment, wherein the processor 5 is connected to the data processing module 12;

[0034] The road auxiliary equipment includes multiple groups of auxiliary equipment units 13. Each traffic light at an intersection and on the side of the highway is equipped with an auxiliary equipment unit 13. Each group of auxiliary equipment units 13 includes a camera 14 and a voice alarm announcer 15. The multiple groups of auxiliary equipment units 13 are respectively connected to the data processing module 12.

[0035] When the vehicle is driving, the air pressure in the tank is detected by the air pressure sensor 8. When the storage tank 2 leaks air or liquid, the air pressure in the tank will change. When the air pressure sensor 8 detects the change in the air pressure in the tank, the processor 5 sends the danger signal and the positioning information to the data processing module 12. When the storage tank 2 leaks liquid, the liquid drips down the storage tank 2 and is detected by the piezoelectric film sensor 9 arranged under the storage tank 2. The processor 5 sends the danger signal and the positioning information to the data processing module 12.

[0036] After receiving the danger signal and the positioning information of the vehicle, the data processing module 12 obtains the images of the two cameras 14 closest to the vehicle. First, it provides driving guidance for the vehicle, guides it to drive to an open position, and sends the position information of the open position to the processor 5. The processor 5 then displays the position information of the open position on the display screen 4. The selection of the open position is based on the image captured by the camera 14. If no open position can be found in the images captured by the two cameras 14, the image of the camera 14 farther away is retrieved for selection. The open position can also be manually specified. At the same time, the vehicle's driving direction is determined based on the changes in the images captured by the camera 14 and the positioning information. Then, based on the vehicle's driving direction, the number of the auxiliary equipment unit 13 in front of the driving direction is obtained, and the voice alarm announcer 15 is used to warn other vehicles to leave and broadcast the driving guidance and turning information of the dangerous vehicle. Then, the number of the auxiliary equipment unit 13 behind the driving direction is obtained, and the voice alarm announcer 15 is used to warn other vehicles to change direction.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A hazardous chemicals vehicle operation monitoring system, characterized by: It includes hazardous chemicals vehicle operation monitoring devices, data processing modules and road auxiliary equipment; The hazardous chemicals vehicle operation monitoring device comprises a task vehicle and a monitoring module; The task vehicle comprises a vehicle body and a storage tank fixedly arranged in the vehicle body, and a display screen is arranged in the vehicle body; The monitoring module includes a first monitoring mechanism, a second monitoring mechanism and a processor; the first monitoring mechanism includes a vibration sensor and an acoustic emission sensor, the vibration sensor and the acoustic emission sensor are arranged on the surface of the storage tank, the second monitoring mechanism includes an air pressure sensor and a piezoelectric film sensor, an inverted U-shaped tube is provided on the top of the storage tank, the two ends of the inverted U-shaped tube are respectively connected to the storage tank, the top of the inverted U-shaped tube is connected to the detection tube, the air pressure sensor is arranged on the inner wall of the detection tube, the piezoelectric film sensor is arranged below the storage tank, and the vibration sensor, the acoustic emission sensor, the air pressure sensor and the piezoelectric film sensor are respectively connected to the processor; The display screen is connected to the processor; The processor of the hazardous chemicals vehicle operation monitoring device is connected to the data processing module; After receiving the danger signal and the vehicle's positioning information, the data processing module obtains the images of the two cameras closest to the vehicle's position. First, it provides driving guidance for the vehicle, guides it to drive to an open position, and sends the position information of the open position to the processor. The processor then displays the position information of the open position on the display screen. The selection of the open position is determined based on the camera shooting picture. If no open position can be found in the two camera shooting pictures, the picture of the farther camera is retrieved for selection, or an open position is manually specified. At the same time, according to the camera shooting picture and the change of positioning information, the driving direction of the vehicle is determined. Then, according to the driving direction of the vehicle, the number of the auxiliary equipment unit in front of the driving direction is obtained, and the voice alarm announcer is used to warn other vehicles to leave and broadcast the driving guidance and turning information of the dangerous vehicle. Then, the number of the auxiliary equipment unit behind the driving direction is obtained, and the voice alarm announcer is used to warn other vehicles to change direction. The vehicle body is provided with a positioning device, and a parking leakage detection is performed each time the task vehicle stops. The parking leakage detection includes the following steps: Step 1, obtaining a first vibration signal and a first acoustic emission signal before the task vehicle stops, obtaining a second vibration signal and a second acoustic emission signal after the task vehicle restarts, and obtaining positioning information of the parking location, the first vibration signal and the first acoustic emission signal are obtained before deceleration, and the second vibration signal and the second acoustic emission signal are obtained when driving steadily after acceleration; Step 2, performing noise reduction processing on the first vibration signal and the first acoustic emission signal, and extracting features from the first vibration signal and the first acoustic emission signal after noise reduction, performing noise reduction processing on the second vibration signal and the second acoustic emission signal, and extracting signal features from the second vibration signal and the second acoustic emission signal after noise reduction; Step 3, using a BP neural network to preliminarily identify signal features in the first vibration signal, the first acoustic emission signal, the second vibration signal, and the second acoustic emission signal; Step 4, fusing the recognition results of the first vibration signal, the first acoustic emission signal, the second vibration signal, and the second acoustic emission signal to confirm the leakage result.

2. A hazardous chemicals vehicle operation monitoring system as claimed in claim 1, characterized in that: The road auxiliary equipment includes multiple groups of auxiliary equipment units. Each traffic light at an intersection and on the side of the highway is equipped with an auxiliary equipment unit. The multiple groups of auxiliary equipment units are respectively connected to the data processing modules. Each group of auxiliary equipment units includes a camera and a voice alarm announcer.

3. A hazardous chemicals vehicle operation monitoring system as claimed in claim 1, characterized in that: When the vehicle is driving, the air pressure in the tank is detected by the air pressure sensor. When the storage tank leaks air or liquid, the air pressure in the tank will change. When the air pressure sensor detects the change in air pressure in the tank, the processor sends a danger signal and positioning information to the data processing module. When the storage tank leaks liquid, the liquid drips under the storage tank and is detected by the piezoelectric film sensor installed under the storage tank. The processor sends a danger signal and positioning information to the data processing module.

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