KR101504008B1 - System and method for warning overheating tire and cooling the tire using thermal imaging camera - Google Patents

Abstract

A tire overheating alarm and cooling system using a thermal camera and method thereof are disclosed. A thermal image camera provided on both sides of the road to detect infrared rays of the vehicle in operation and generate / output an infrared image; A road electric signboard provided on a side of the road; A thermometer for measuring the ambient temperature; A water-cooled cooler for spraying water on the tire of the vehicle; The temperature of the tire is calculated from the infrared image generated / outputted by the thermal camera, the temperature of the tire is compared with the preset overtemperature threshold temperature to determine whether the tire is overheated, and if the tire is overheated Calculating a cooling time required for cooling the tire using the ambient temperature measured by the thermometer and the temperature of the tire, displaying the stop request guide of the vehicle and the calculated cooling time on the road electric signboard, And the water cooler radiates water to the tire of the vehicle during the cooling time when the vehicle is stopped.

Description

TECHNICAL FIELD [0001] The present invention relates to a system and method for overheating an overheated tire using a thermal camera,

FIELD OF THE INVENTION The present invention relates to thermal imaging cameras, and more particularly to a tire overheating alarm and cooling system and method using a thermal imaging camera.

BACKGROUND ART Conventionally, operating requirements for tires for safety driving of a vehicle have been strengthened. The tire pressure monitoring system (TPMS) is a system that measures the tire air pressure at any time and maintains the proper air pressure. The mandatory installation of the tire air pressure monitoring system is being legislated.

Such a tire is very important for the safe driving of the vehicle.

However, the temperature of the tire is very important as well as the air pressure of the tire.

When the vehicle runs, the temperature of the tire starts rising due to the friction with the ground. It is also found that the temperature of the tire starts to break from about 125 degrees and the breakage proceeds at about 158 degrees. Particularly, as the air pressure of the tire is lowered, the wear of the tire is greater, the traveling speed is higher, the longer the continuous traveling time, and the higher the load, the higher the temperature of the tire.

When a tire is overheated, it can damage the tire and lead to a fatal traffic accident such as a rollover accident. Therefore, it is very important to determine whether the tire is overheating.

In particular, when an accident occurs in a tunnel, it is likely to lead to a second accident as well as a direct traffic accident.

 However, there is a system for checking the tire air pressure, but a system for directly checking the overheating state of the tire is not used, and such a system is required. A system for lowering the temperature of the tire is also needed.

On the other hand, the region where the temperature is highest in the vehicle is the tire, followed by the exhaust gas outlet and the engine room. It is necessary to measure the respective temperatures to prevent the occurrence of accidents due to overheating.

In the case of a truck, it is possible to cause a serious accident even when the temperature of the cargo exceeds the dangerous temperature due to strong sunlight or overheating of the vehicle in the summer when a high-risk compound is loaded. It is necessary to prevent the accident by sensing that the temperature of the cargo is ideally raised.

It is an object of the present invention to provide a tire overheating warning and cooling system using a thermal camera.

It is another object of the present invention to provide a tire overheating warning and cooling method using a thermal laminating camera.

The thermal overheating alarm and cooling system using the thermal camera according to the present invention may be applied to a thermal image camera that is provided on both sides of the road and detects infrared rays of the vehicle in operation to generate and output an infrared image; A road electric signboard provided on a side of the road; A thermometer for measuring the ambient temperature; A water-cooled cooler for spraying water on the tire of the vehicle; The temperature of the tire is calculated from the infrared image generated / outputted by the thermal camera, the temperature of the tire is compared with the preset overtemperature threshold temperature to determine whether the tire is overheated, and if the tire is overheated Calculating a cooling time required for cooling the tire using the ambient temperature measured by the thermometer and the temperature of the tire, displaying the stop request guide of the vehicle and the calculated cooling time on the road electric signboard, And a controller for controlling the water-cooled cooler to spray water onto the tire of the vehicle during the cooling time when the vehicle is stopped.

In addition, the controller further calculates the temperature of the cargo in the case of the exhaust gas discharging portion, the engine room, and the lorry from the infrared image generated / outputted by the thermal image camera, The temperature of the engine and the temperature of the engine and the temperature of the engine and the temperature of the engine are determined, It is preferable to calculate the time, control the stop request of the vehicle and display the calculated cooling time on the road electric signboard.

Meanwhile, in order to enable short distance communication with the navigation apparatus of the vehicle, and to allow the navigation apparatus of the vehicle to display the stop request guide and the cooling time of the controller, the stop request guide and the cooling time, And may further comprise a transmitter for transmitting to the navigation device.

According to another aspect of the present invention, there is provided a tire overheating warning and cooling method using a thermal camera, comprising the steps of: generating and outputting an infrared image by detecting infrared rays of a vehicle traveling in a thermal camera provided on both sides of a road; Calculating a temperature of the tire from the infrared image generated / output by the controller; Determining whether the tire is overheated by comparing the calculated temperature of the tire with a preset overheating threshold temperature; Calculating a cooling time required for cooling the tire using the current ambient temperature measured by the thermometer and the calculated temperature of the tire when the controller determines that the tire is overheated; Displaying the stop request guide of the vehicle and the estimated cooling time on the road signboard under the control of the controller; And, when the vehicle is stopped, injecting water into the tire of the vehicle during the cooling time according to the control of the controller.

The controller may further calculate the temperature of the cargo in the case of the exhaust gas discharge unit, the engine room, and the lorry from the infrared image generated / output by the thermal imaging camera; Determining whether the engine is overheated by comparing the temperature of the exhaust gas discharge unit and the temperature of the engine room with the predetermined superheat threshold temperature; Calculating a cooling time using the ambient temperature measured by the thermometer and the temperature of the exhaust gas outlet, the engine compartment, and the cargo when the controller is overheated; And displaying the stop request guide of the vehicle and the estimated cooling time on the road signboard under the control of the controller.

According to the tire overheat alarm and cooling system and method using the thermal camera as described above, the temperature of the tire and the vehicle is directly measured by the thermal camera and the warning is given to the vehicle, thereby preventing the occurrence of traffic accidents due to the rise in tire temperature There is an effect that can be. In addition, when the tire is in an overheated state, the temperature of the tire is directly lowered through water injection or the like, thereby enabling the vehicle to run.

On the other hand, there is an effect that the occurrence of an accident during vehicle operation can be prevented by warning the overheating or overload of the vehicle by sensing the temperature of the exhaust gas discharging portion or the engine room of the vehicle using a thermal camera.

In particular, when the temperature of a cargo cargo is increased, a cargo such as a dangerous compound may cause a large accident.

1 is a block diagram of a tire overheat alarm and cooling system using a thermal camera according to an embodiment of the present invention.
2 is a flowchart of a tire overheating warning and cooling method using a thermal camera according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail to the concrete inventive concept.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a tire overheat alarm and cooling system using a thermal camera according to an embodiment of the present invention.

Referring to FIG. 1, a tire overheating alarm and cooling system 100 using a thermal camera according to an exemplary embodiment of the present invention (hereinafter referred to as a 'tire overheating alarm and cooling system') includes a thermal camera 110, 120, a road sign board 130, a transmitter 140, a water-cooled cooler 150, and a controller 160.

The tire overheating warning and cooling system 100 measures the temperature of cargo in the case of a tire or an exhaust gas discharging portion of an oncoming vehicle 200, an engine room, or a freight car by installing a thermal camera 110 on both sides of the road, It is configured to judge whether or not the vehicle is overheated and warn the vehicle.

When the tire is in an overheated state, water is directly injected into the tire by using the water-cooled cooler (150), thereby lowering the temperature of the tire. In addition, even when the vehicle is overheated, the vehicle stop guidance or warning guide may be displayed on the road electric signboard 130 installed on the side of the road, or the transmitter 140 may transmit a warning signal to the navigation apparatus of the vehicle, Thereby warning the vehicle to stop operating.

On the other hand, the controller 160 is configured to predict the time required for cooling the tire and provide the estimated time to the driver. Also, the time required for cooling the vehicle itself can be predicted and informed.

The tire overheating alarm and cooling system 100 is particularly useful for preventing accidents such as traffic accidents and secondary accidents in the tunnel and occurrence of major accidents by installing them before entering the tunnels.

Hereinafter, the detailed configuration will be described.

The thermal imaging cameras 110 are provided on both sides of the road, and may be configured to detect infrared rays of the vehicle in operation and generate / output infrared images.

The thermal camera 110 is called a so-called infrared camera, and is configured to measure the temperature of an object by detecting the amount of radiant energy, that is, infrared rays, emitted from the object itself.

Here, the information about the absolute temperature of the object according to the amount of infrared rays may be stored in advance in the controller 160. This is because the controller 160 calculates the absolute temperature of the object. This information, that is, information on how many infrared rays are detected at an absolute temperature, can be obtained in advance through a device called a black body.

Since the black body is close to an ideal black body, when the black body operates at a specific absolute temperature, the amount of infrared rays detected by the thermal camera 110 is matched to obtain a table of the infrared ray amount to be detected for each absolute temperature. This table is stored in the controller 160. Therefore, the controller 160 can estimate the absolute temperature by inquiring the infrared ray detection amount of each pixel from the infrared ray image obtained from the thermal camera 110, from the information of the above table.

Thus, by using the thermal camera 110, it is possible to measure the temperature of the vehicle 200 that is traveling remotely in a non-contact manner. Since the vehicle 200 can be measured even when the vehicle 200 is not stopped, it is very convenient for the driver as well as measuring the temperature of the vehicle 200 or the tire in the current driving state, so that the danger can be accurately and quickly detected .

Since the thermal camera 110 needs to detect all the tires on both sides of the vehicle 200, it is preferable that the thermal camera 110 is provided on both sides of the road.

The infrared image generated / output by the thermal camera 110 may be provided to the controller 160 through wireless communication such as wire communication or local communication.

The controller 160 is configured to calculate the temperature of the tire from the infrared image generated / outputted by the thermal camera 110, as described above. In addition, the controller 160 is configured to determine whether the tire is overheated by comparing the calculated temperature of the tire with a preset overheating threshold temperature. For example, if the temperature of the tire rises above 150 degrees, it can be judged to be very dangerous.

Here, the controller 160 first performs image separation or object separation from the infrared image. This is because, in order to measure the temperature of the tire and measure the temperature of the vehicle, it is necessary to recognize the corresponding configuration, that is, the object.

The controller 160 performs image separation through an image preprocessing process such as histogram smoothing, noise elimination, and binarization. First, the controller 160 performs image separation from the vehicle 200 to the tire, the exhaust gas discharge unit, and other parts . Here, the exhaust gas discharging portion is a portion of the vehicle 200 where the temperature is higher next to the tire. That is, basically, each part or object can be separated according to the high ranking of the temperature in the vehicle.

Image separation can be achieved by extracting feature points through features of the shape itself. In the case of a tire, it has a characteristic point of a circular shape when taken from the side of the road, and its size is also expected to some extent. More specifically, the tires are distinguished by judging whether the two circular tires are of the expected size. Recognition and extraction of objects in video belongs to the generalized technology as it extracts car number by recognizing license plate of illegally parked car in monitoring system such as CCTV (closed circuit TV).

On the other hand, the exhaust gas discharging portion is most likely to be installed horizontally with the vehicle body on the lower side of the vehicle, but it is not detectable when the thermal camera 100 is used to photograph the rear side of the vehicle. Further, in a vans and the like, the position of the exhaust gas discharging portion may be located at a different place, such as the upper side of the vehicle, rather than the lower side of the vehicle. In this case, the exhaust gas discharging portion can be easily detected.

Further, since the exhaust gas discharge portion generally has a higher temperature than its surroundings, it can be sufficiently predicted through the temperature difference with the surroundings. Thus, it is possible to sufficiently separate the image of the exhaust gas discharging portion through the temperature difference between the position in the vehicle and the surroundings.

Then, the controller 160 calculates the temperature of the tire through the amount of infrared rays detected in the pixels of the tire separated from the infrared image. At this time, the average temperature of the tire including the wheel and the surface temperature of the tire outer surface can be extracted. At this time, the controller 160 determines whether the tire is overheated by comparing the temperature of the tire with the overheat threshold temperature of the predetermined tire.

The controller 160 calculates the temperature of the exhaust gas discharging portion and the temperature of the other portion. As for the other parts, the cargo loaded in the engine room and the freight car is an important part of the temperature. The engine room belongs to a very high temperature region of the vehicle following the tire and the exhaust gas outlet. And cargo is very important because the increase in temperature depending on the type of cargo can result in very dangerous.

In the engine room, the temperature rises during long-term driving. In the engine room, the position of the engine can be predicted by analyzing the shape of the vehicle and its temperature. In addition, a lorry can recognize the lorry through its shape, and the position of the lorry can be predicted sufficiently.

At this time, when the cargo is a high-risk compound, an increase in the temperature may cause a large amount of dust such as an explosion, so it is necessary to prevent the temperature of the cargo from rising.

Accordingly, the controller 160 may be configured to image the cargo of the exhaust gas discharging portion, the engine room, and the cargo truck from the infrared image, and to calculate the respective temperatures. As described above, the image separation and more precisely, object recognition and extraction can be performed by individually or collectively determining the position, shape, and temperature of the tire and the exhaust gas discharge portion of the vehicle.

The controller 160 can determine that the exhaust gas is overheated when the temperature of the exhaust gas outlet exceeds approximately 120 degrees. If the temperature of the other part, that is, the temperature of the engine compartment or the cargo cargo, is measured to be about 90 degrees or more, it can be judged that it is overheated.

On the other hand, the thermometer 120 measures the current temperature of the surroundings. The thermometer 120 is preferably configured to measure the current temperature at all times. The reason for measuring the temperature is that the time required to cool the tire depends on the current temperature around it. That is, the higher the ambient temperature, the longer the cooling time, and the lower the ambient temperature, the shorter the cooling time.

At this time, when the controller 160 determines that the cargo of the tire, the exhaust gas, the engine room, and the lorry is in an overheated state, the controller 160 controls the ambient temperature measured by the thermometer 120 and the temperature of the tire, And estimates and estimates the cooling time required for cooling the tires, the engine room, and the like. The controller 160 may be configured to estimate the cooling time using the water cooled cooler 150 in the case of cooling of the tire, and in the case of other cooling, Lt; / RTI >

The road electric signboard 130 may be provided on the side of the road. It is preferable to be installed facing the driver's running direction.

The road electric signboard 130 is used for cooling the engine 200 or the cargo of the vehicle 200, that is, the tires, the exhaust gas discharging portion, and other parts of the vehicle 200, May be configured to display time.

The controller 160 may be configured to transmit the stop request guidance and the cooling time by wire communication or short distance communication with the road electric sign board 130.

On the other hand, the road sign board 130 may be configured to display the vehicle number of the vehicle 200 when the stop request is made, and may also display an object in an overheated state, such as a tire or an exhaust gas discharge unit, and the temperature thereof. Here, the vehicle number may be configured to be photographed and recognized by the thermal camera 110. [

The transmitter 140 is a configuration that performs wireless communication such as short-distance communication with the vehicle. The transmitter 140 is configured to transmit the stop request guidance and the cooling time generated by the controller 160 to the vehicle 200 when the controller 160 determines that the controller 160 is overheating.

As described above, it is preferable that the number of the vehicle 200 is included in the stop request information. The vehicle number of the vehicle 200 can be recognized by the thermal camera 110 and the controller 160 can send a stop request signal including the vehicle number to the vehicle 200 through the transmitter 140. [

The transmitter 140 may be configured to transmit a cooling time, a stop request guide, a danger warning, and the like to the navigation device using local communication so that the navigation device of the vehicle 200 can display it. Various types of wireless communication methods such as Wi-Fi, Wi-Fi direct, and Bluetooth can be applied as the short-distance communication.

Preferably, the navigation device of the vehicle 200 is also configured such that such close range communication is automatically set up, and is configured to automatically receive the signal and display the received content on the display.

It is preferable that the vehicle number of the vehicle 200 is set in the navigation device. When the navigation device compares the vehicle number included in the received stop request guide with the vehicle number set in the navigation device, It is desirable to display the time and the like on the display.

Thus, the driver can recognize that the temperature of the exhaust gas discharge unit or the engine room is in an overheated state through the road electric sign board 130 or the navigation device, thereby inducing cooling or stopping.

The water-cooled cooler 150 is a structure for spraying water onto the tire of the vehicle 200. The water cooler 150 may be configured to be installed in a separate stop space provided outside the road.

When the driver who has received the stop request signal stops the vehicle 200 in the stop space outside the road where the water cooling type cooler 150 is installed, the water cooled cooler 150 checks the number of the vehicle 200, And inject water into the tires of the vehicle 200 during a period of time. This can be configured to operate according to the vehicle number and the cooling time under the control of the controller 160. [

The tire overheating warning and cooling system 100 may be installed in a zone before entering a tunnel or in a city entrance zone and may be installed anywhere on a road even if it is not a tunnel. On the other hand, in the tire overheat warning and cooling system 100, the distance between the thermal camera 110 and the water-cooling type cooler 150 is inevitably long in a high-speed road where a high-speed traveling is frequent. Therefore, each of the configurations can be configured to exchange data with each other by a wired communication or a short-range wireless communication at a relatively long distance around the controller 160.

2 is a flowchart of a tire overheating warning and cooling method using a thermal camera according to an embodiment of the present invention.

Referring to FIG. 2, a thermal camera 110 provided on each side of a road first detects infrared rays of a vehicle in operation and generates / outputs an infrared image (S101).

Here, it is determined whether the set state of the controller 160 is set for tire temperature calculation (S102a), and whether the vehicle temperature calculation is set (S102b).

When the tire temperature is set to be calculated, the controller 160 calculates the temperature of the tire from the infrared image frame (S103a).

The controller 160 determines whether the tire is overheat by comparing the temperature of the tire calculated above with a preset overheating threshold temperature (S104a).

At this time, if it is determined that the tire is overheated, the controller 160 calculates the cooling time required for cooling the tire by using the current ambient temperature measured by the thermometer 120 and the calculated tire temperature S106a).

Then, according to the control of the controller 160, the stop request guidance and the cooling time of the vehicle are displayed on the road signboard 130 (S107a).

When the driver stops the vehicle 200 in response to the stop request signal, the water-cooled cooler 150 injects water into the tire of the vehicle 200 for cooling during the cooling time under the control of the controller 160 (S109a).

On the other hand, when the setting of the controller 150 is set to the vehicle temperature calculation, the controller 160 controls the exhaust gas discharging part and the engine room and the vans in the infrared image generated / outputted by the thermal camera 110 The temperature of the cargo is further calculated (S103b).

In step S104b, the controller 160 compares the temperature of the exhaust gas discharge unit and the temperature of the engine room and the cargo to each other, to determine whether or not the temperature is overheated.

If the vehicle 200 is overheated (S015b) as a result of the determination, the controller 160 controls the cooling of the vehicle 200 using the ambient temperature measured by the thermometer 120 and the temperature of the exhaust gas, The time is calculated (S106b).

Then, according to the control of the controller 160, the stop request guide and the cooling time of the vehicle 200 are displayed on the road signboard 130 (S107b).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims There will be.

110: Thermal camera
120: Thermometer
130: road signboard
140: Transmitter
150: Water Cooler
160:

Claims (5)

A thermal image camera provided on both sides of the road to detect infrared rays of the vehicle in operation and generate / output an infrared image;
A road electric signboard provided on a side of the road;
A thermometer for measuring the ambient temperature;
A water-cooled cooler for spraying water on the tire of the vehicle;
The temperature of the tire is calculated from the infrared image generated / outputted by the thermal camera, the temperature of the tire is compared with the preset overtemperature threshold temperature to determine whether the tire is overheated, and if the tire is overheated Calculating a cooling time required for cooling the tire using the ambient temperature measured by the thermometer and the temperature of the tire, displaying the stop request guide of the vehicle and the calculated cooling time on the road electric signboard, And a controller for controlling the water-cooled cooler to spray water onto the tire of the vehicle during the cooling time when the vehicle is stopped. 2. The apparatus of claim 1,
The temperature of the cargo in the case of the exhaust gas discharging part, the engine compartment and the cargo car is further calculated from the infrared image generated / outputted by the thermal camera, and the temperature of the engine, Determining whether or not the vehicle is overheated based on the temperature of the vehicle, and if the temperature is overheated, calculating the respective cooling times using the ambient temperature measured by the thermometer, the temperature of the exhaust gas, And the controller displays the calculated cooling time on the road electric signboard so as to control the cooling of the vehicle. 3. The method of claim 2,
The stop request guidance and the cooling time may be communicated to the navigation device by a short distance communication method in order to enable short distance communication with the navigation device of the vehicle and to display the stop request guide and the cooling time of the controller on the navigation device of the vehicle. And a transmitter for transmitting the heat to the vehicle. The tire cooling and vehicle overheating alarm system using the thermal imaging camera. A step of generating and outputting an infrared image by detecting infrared rays of a vehicle in which a thermal camera provided on both sides of the road is running;
Calculating a temperature of the tire from the infrared image generated / output by the controller;
Determining whether the tire is overheated by comparing the calculated temperature of the tire with a preset overheating threshold temperature;
Calculating a cooling time required for cooling the tire using the current ambient temperature measured by the thermometer and the calculated temperature of the tire when the controller determines that the tire is overheated;
Displaying the stop request guide of the vehicle and the estimated cooling time on the road signboard under the control of the controller;
Wherein the water cooled cooler injects water into the tire of the vehicle during the cooling time under the control of the controller when the vehicle is stopped. 5. The method of claim 4,
Calculating the temperature of the cargo in the case of the exhaust gas discharge portion, the engine room and the cargo car from the infrared image generated / outputted by the controller by the controller;
Determining whether the engine is overheated by comparing the temperature of the exhaust gas discharge unit and the temperature of the engine room with the predetermined superheat threshold temperature;
Calculating a cooling time using the ambient temperature measured by the thermometer and the temperature of the exhaust gas outlet, the engine compartment, and the cargo when the controller is overheated;
Further comprising the step of displaying the stop request guide of the vehicle and the estimated cooling time on the road sign board under the control of the controller.

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