An infrared temperature measurement and early warning system for high-speed rail toilets and its use method

Abstract

This invention relates to the field of security monitoring technology, solving the technical problem that existing technologies cannot stop smokers in time before triggering smoke alarms. Specifically, it relates to an infrared temperature measurement and early warning system for high-speed rail restrooms, comprising several infrared modules, a wireless transmission module, a central control computer, and several early warning modules. The infrared modules convert real-time collected temperature signals into electrical signals and output them. The wireless transmission modules transmit the electrical signals output by the infrared modules to the central control computer. The central control computer identifies the received electrical signals according to a preset temperature threshold. If an abnormal signal is detected, it sends an early warning activation command to the corresponding early warning module based on the source of the abnormal signal, while simultaneously flashing a warning light. The early warning modules activate and issue an early warning based on the early warning activation command. This invention can detect and stop smoking passengers in time before triggering smoke alarms, effectively avoiding impact on train operation and improving safety.

Description

Technical Field

[0001] This invention relates to the field of security monitoring technology, and in particular to an infrared temperature measurement and early warning system for high-speed rail restrooms and its usage method. Background Technology

[0002] As is widely known, to prevent fires, smoking is prohibited on high-speed trains throughout the journey, and each carriage is equipped with smoke alarms that are easily triggered by smoke from smoking. Once a smoke alarm is triggered, the train will automatically slow down or even brake suddenly, and passengers who smoke will be punished in accordance with relevant laws and regulations.

[0003] However, the aforementioned smoke detection methods can only serve as a post-event control and warning measure. They cannot detect potential smoking behaviors driven by wishful thinking in the first instance, nor can they take timely and appropriate preventative measures. Therefore, they pose a serious safety hazard during high-speed train operation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an infrared temperature measurement and early warning system for high-speed rail restrooms and its usage method. It solves the technical problem that existing technologies cannot stop smokers before the smoke alarm is triggered, achieving the goal of detecting passengers who are taking chances by smoking on the train before the smoke alarm is triggered, and stopping them in time to avoid affecting train operation.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an infrared temperature measurement and early warning system for high-speed rail toilets, comprising several infrared modules, a wireless transmission module, a central control host computer, and several early warning modules;

[0006] The infrared module is used to convert the temperature signal collected in real time in the high-speed rail toilet into an electrical signal and output it.

[0007] The wireless transmission module is used to transmit the electrical signals output by the infrared module to the central control host computer;

[0008] The central control host computer is used to identify the received electrical signal according to the preset temperature threshold. If it is an abnormal signal, it sends an early warning start command to the corresponding early warning module according to the source of the abnormal signal, and the central control warning light flashes at the same time.

[0009] The warning module is used to activate and issue a warning according to the warning activation command, warning passengers that smoking is prohibited throughout the train and reminding staff to check.

[0010] Furthermore, several infrared modules are fixedly installed inside each bathroom, and each infrared module includes an infrared lens, an infrared detector, and a locator connected to each other.

[0011] The infrared lens is used to focus the infrared radiation emitted by objects within the field of view area onto the infrared detector in real time, wherein the field of view includes a horizontal field of view and a vertical field of view.

[0012] The infrared detector has a resolution of 384×288 and is used to convert the received temperature signal into an electrical signal and output it.

[0013] The locator is used to determine the location of the abnormal signal.

[0014] Furthermore, the wireless transmission module includes a wireless transmitting module and a wireless receiving module;

[0015] The wireless transmission module is fixedly installed inside the high-speed rail restroom and is used to transmit the electrical signals output by the infrared module.

[0016] The wireless receiving module is fixedly installed inside the central control room and is used to receive the electrical signals emitted by the wireless transmitting module and transmit them to the central control host computer.

[0017] Furthermore, the warning module is configured as a buzzer, and the number of warning modules is the same as the number of infrared modules.

[0018] Furthermore, it also includes a power supply module, which supplies power to the infrared module, wireless transmission module, central control host computer and early warning module via wires.

[0019] Furthermore, the preset temperature threshold is set to be greater than 100°C based on the temperature of the lighter flame.

[0020] This application also provides a technical solution: a method for using the aforementioned infrared temperature measurement and early warning system in a high-speed rail restroom, comprising the following steps:

[0021] S1. Based on the size parameters of the high-speed rail toilet and the smoking behavior characteristics of high-speed rail passengers, the resolution of the infrared detector is determined to be 384×288, and the infrared module is installed at an angle inside the high-speed rail toilet.

[0022] S2. Fix the wireless transmitter module around the infrared module, and install the central control host computer, central control warning light and wireless receiver module inside the central control room;

[0023] S3. Set a temperature threshold on the central control computer based on the temperature of the lighter flame;

[0024] S4. When the central control host computer identifies that the temperature signal collected in real time by the infrared module exceeds the preset temperature threshold, it sends an early warning start command to the corresponding early warning module according to the source of the abnormal signal, and the central control warning light flashes at the same time.

[0025] S5, the early warning module is activated according to the early warning activation command and issues an early warning, warning passengers who sneak into the restroom to smoke, and reminding high-speed rail staff to check and stop them in time.

[0026] Further, in step S1, determining the resolution of the infrared detector to be 384×288 includes:

[0027] S11. Determine the installation location of the infrared module based on the size parameters of the high-speed rail toilet;

[0028] S12. Calculate the field of view of the infrared lens based on the installation position of the infrared module, and calculate the field of view angle occupied by the lighter flame based on the smoking behavior characteristics of high-speed rail passengers.

[0029] S13. Calculate the number of flame temperature points measured within the field of view area based on the field of view angle occupied by the lighter flame;

[0030] S14. Based on the number of flame temperature points measured within the field of view and the pixel requirements for identifying each temperature point, calculate that the resolution of the infrared detector must be ≥337×243.

[0031] By employing the above technical solution, the present invention provides an infrared temperature measurement and early warning system for high-speed rail restrooms and its usage method, which has at least the following beneficial effects:

[0032] 1. This invention involves installing infrared modules in various high-speed rail restrooms. Infrared lenses focus infrared radiation emitted by objects within the field of view onto infrared detectors. The detectors convert the received temperature signals into electrical signals, which are then transmitted wirelessly to a central control computer. The central control computer identifies the received electrical signals based on a preset temperature threshold. If an abnormal signal is detected, a warning activation command is sent to the corresponding warning module based on the source of the abnormal signal. Simultaneously, a warning light flashes, and the corresponding warning module issues an alert. This allows for immediate detection of potential smoking behavior, preventing it from triggering the smoke alarm and effectively avoiding any impact on train operation, thus improving safety.

[0033] 2. This invention calculates the number of flame temperature points measured within the field of view based on the installation location of the infrared module and the smoking behavior characteristics of high-speed rail passengers. It also determines the resolution model of the infrared detector based on the pixel requirements for identifying flame temperature points. This achieves the goal of reducing early warning costs while ensuring the accuracy of flame temperature point identification, thus having high social value and application prospects. Attached Figure Description

[0034] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0035] Figure 1 A block diagram of the infrared temperature measurement and early warning system for high-speed rail restrooms provided by the present invention;

[0036] Figure 2 This is a block diagram of the infrared module in the infrared temperature measurement and early warning system for high-speed rail restrooms provided by the present invention;

[0037] Figure 3 A block diagram of the wireless transmission module in the infrared temperature measurement and early warning system for high-speed rail restrooms provided by the present invention;

[0038] Figure 4 This invention provides a schematic diagram of the working principle of the infrared temperature measurement and early warning system for high-speed rail restrooms.

[0039] Figure 5 A flowchart illustrating the usage method of the infrared temperature measurement and early warning system for high-speed rail restrooms provided by the present invention;

[0040] Figure 6 This is an example diagram showing the installation position of the infrared module in the infrared temperature measurement and early warning system for high-speed rail restrooms provided by the present invention. The arrow in the diagram indicates the direction of the restroom door.

[0041] Figure 7 An example diagram of the horizontal field of view in the usage method of the infrared temperature measurement and early warning system for high-speed rail toilets provided by the present invention;

[0042] Figure 8 An example diagram of the vertical field of view in the usage method of the infrared temperature measurement and early warning system for high-speed rail toilets provided by the present invention;

[0043] Figure 9 This is an example diagram showing the position of a lighter flame in the usage method of the infrared temperature measurement and early warning system for high-speed rail restrooms provided by the present invention.

[0044] In the diagram: 10, Infrared module; 101, Infrared lens; 102, Infrared detector; 103, Positioner; 20, Wireless transmission module; 201, Wireless transmitter module; 202, Wireless receiver module; 30, Central control host computer; 40, Early warning module; 50, Power supply module. Detailed Implementation

[0045] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. This will allow for a full understanding of how the present application uses technical means to solve technical problems and achieve technical effects, and to facilitate its implementation.

[0046] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0047] Please refer to Figure 1-4 This illustration shows a specific implementation of the present embodiment. This embodiment can detect and stop smoking passengers in time before the smoke alarm is triggered, which can effectively avoid affecting train operation and improve safety.

[0048] like Figure 1 As shown, a high-speed rail toilet infrared temperature measurement and early warning system includes several infrared modules 10, a wireless transmission module 20, a central control host computer 30, and several early warning modules 40.

[0049] Infrared module 10 is used to convert the real-time temperature signal collected inside the high-speed rail restroom into an electrical signal and output it. Several infrared modules 10 are fixedly installed inside each restroom. The specific number of infrared modules 10 can be determined according to the number of high-speed rail restrooms, and is not specifically limited here. Figure 2 As shown, the infrared module 10 includes an infrared lens 101, an infrared detector 102, and a locator 103 connected together.

[0050] The infrared lens 101 is used to focus the infrared radiation emitted by objects within the field of view area onto the infrared detector 102 in real time. The field of view is also called the field of view in optical engineering. The size of the field of view determines the field of view range of the optical instrument. That is, the larger the field of view, the larger the field of view. The field of view of the infrared lens 101 includes the horizontal field of view α and the vertical field of view β.

[0051] Infrared detector 102 is used to convert the received temperature signal into an electrical signal and output it. Common resolutions of infrared detector 102 include 160×120, 240×180, 320×240, 384×288, and 640×480. In this embodiment, the resolution of infrared detector 102 is set to 384×288.

[0052] The locator 103 is used to determine the location of abnormal signals, helping high-speed rail staff to quickly find the restroom where the smoking passenger is located and stop them in time before the smoke alarm is triggered.

[0053] The wireless transmission module 20 is used to transmit the electrical signals output by the infrared module 10 to the central control host computer 30, such as... Figure 3 As shown, the wireless transmission module 20 includes a wireless transmitting module 201 and a wireless receiving module 202;

[0054] The wireless transmitter module 201 is fixedly installed inside the high-speed rail restroom and is used to transmit the electrical signals output by the infrared module 10.

[0055] The wireless receiver module 202 is fixedly installed inside the central control room and is used to receive the electrical signals emitted by the wireless transmitter module 201 and transmit them to the central control host computer 30.

[0056] The central control host computer 30 is installed in the central control room of the high-speed train. It is used to identify the received electrical signals according to the preset temperature threshold. If it is an abnormal signal, it sends an early warning start command to the corresponding early warning module according to the source of the abnormal signal, and the central control warning light flashes at the same time. Since the temperature of a lighter flame is usually greater than 100°C, which is an instantaneous temperature value, this application sets the preset temperature threshold to 100°C.

[0057] It should be noted that a human-machine interface is also installed in the central control room, which allows workers to quickly locate the restroom where smoking has occurred based on the warning information displayed on the interface, thereby improving the efficiency of stopping smoking.

[0058] The number of warning modules 40 is the same as the number of infrared modules 10. They are used to activate and issue warnings according to the warning activation command, alerting passengers who sneak into the restroom to smoke and simultaneously reminding high-speed rail staff to check. In this embodiment, the warning module 40 is set as a buzzer, but it can also be other alarms; no limitation is made here.

[0059] It also includes a power supply module 50, which is the power source for the high-speed train and supplies power to the infrared module 10, the wireless transmission module 20, the central control host computer 30 and the early warning module 40 through wires.

[0060] like Figure 4As shown, in this embodiment, the infrared radiation emitted by objects in the high-speed rail restroom is focused onto the infrared detector 102 by the infrared lens 101. The infrared detector 102 converts the received temperature signal into an electrical signal and outputs it. The electrical signal is sent to the wireless receiving module 202 in the central control room through the wireless transmitting module 201. After receiving the electrical signal, the wireless receiving module 202 transmits it to the central control host computer 30 for signal identification. If the identified temperature signal exceeds the preset temperature threshold of 100°C, it is determined to be an abnormal signal. Based on the signal source, an early warning activation command is sent to the corresponding restroom's early warning module 40. The early warning module 40 sounds an alarm or issues a warning statement, such as: "Smoking is prohibited on the entire high-speed rail train." At the same time, train staff go to the restroom with the alarm to check and promptly stop the smoking passenger. This allows for the timely detection of the smoking passenger before the smoke alarm is triggered, effectively avoiding any impact on train operation and improving safety.

[0061] Please refer to Figure 5 This embodiment also provides a method for using the infrared temperature measurement and early warning system for the above-mentioned high-speed rail restroom, including the following steps:

[0062] S1. Based on the size parameters of the high-speed rail toilet and the smoking behavior characteristics of high-speed rail passengers, the resolution of the infrared detector is determined to be 384×288, and the infrared module is installed at an angle inside the high-speed rail toilet.

[0063] In this embodiment, the high-speed rail restroom has a space of approximately 1m × 1m × 2m, and the infrared detector is installed 0.75m away from the door. Figure 6 The black dots in the image indicate the installation locations of the infrared module.

[0064] S2. Install the wireless transmitter module around the infrared module, and install the central control host computer, central control warning light and wireless receiver module inside the central control room;

[0065] S3. Based on the temperature of the lighter flame, set the temperature threshold to 100℃ on the central control host computer;

[0066] S4. When the central control host computer identifies that the temperature signal collected in real time by the infrared module exceeds the preset temperature threshold of 100℃, it is considered an abnormal signal. The central control warning light will flash at the same time and send an early warning start command to the corresponding early warning module according to the source of the abnormal signal.

[0067] S5, the corresponding early warning module is activated according to the early warning activation command and issues an early warning, warning passengers who sneak into the restroom to smoke, and reminding high-speed rail staff to check and stop them in time.

[0068] In step S1, the resolution of the infrared detector is determined to be 384×288. The specific calculation steps include:

[0069] In this embodiment, the horizontal field of view of the infrared lens is calculated based on the installation position of the infrared module:

[0070] ∠1=arctan(1.5 / 0.25)=81°

[0071] ∠2=arctan(0.5 / 0.75)=35°

[0072] H Fov =∠α=180-∠1-∠2=64°

[0073] The horizontal field of view H of the infrared lens can be calculated from Figure 7. Fov The angle is 64°; next, the vertical field of view of the infrared lens is calculated:

[0074] ∠3 = arctan(1 / 0.75) = 53°

[0075] ∠4=arctan(1.5 / 0.25)=81°

[0076] V Fov =∠β=180-∠3-∠4=46°

[0077] The vertical field of view V of the infrared lens can be calculated from the 8 figures. Fov It is 46°.

[0078] Based on the smoking behavior characteristics of high-speed rail passengers, assuming that the area of ​​the lighter flame at 1.5m above the carriage ceiling is ≥0.5×0.5cm, the angle of view occupied by the lighter flame at this time can be calculated from Figure 9 as follows:

[0079] Θ=arctan(0.005 / 1.5)=0.19°

[0080] Due to the horizontal field of view H Fov If the angle is 64°, then a total of 337 flame temperature points need to be measured within the horizontal field of view; the vertical field of view V Fov If the angle is 46°, then a total of 243 flame temperature points need to be measured within the vertical field of view.

[0081] According to most current FPA detector technologies, a target must have at least 3×3 pixels on the detector to ensure accurate measurement. If the target image is less than 3×3 pixels, the temperature reading displayed by the thermal imager is the average of the target's temperature and the temperatures of surrounding objects or the environment also imaged in those 3×3 pixels. However, in the early warning scheme of this application, accurate temperature readings are not required; only anomaly identification is needed. Therefore, each temperature point occupies only 1×1 pixels, meaning the infrared detector resolution must be ≥337×243. Therefore, this application recommends using an infrared detector with a resolution of 384×288.

[0082] This embodiment calculates the number of flame temperature points measured within the field of view based on the installation location of the infrared module and the smoking behavior characteristics of high-speed rail passengers. It also determines the resolution model of the infrared detector based on the pixel requirements for identifying flame temperature points. This achieves the goal of reducing early warning costs while ensuring the accuracy of flame temperature point identification, thus possessing high social value and application prospects.

[0083] This invention involves installing infrared modules in various high-speed rail restrooms. Infrared lenses focus infrared radiation emitted by objects within the field of view onto infrared detectors. The detectors convert the received temperature signals into electrical signals, which are then transmitted wirelessly to a central control computer. The central control computer identifies the received electrical signals based on a preset temperature threshold. If an abnormal signal is detected, a warning activation command is sent to the corresponding warning module based on the source of the abnormal signal. Simultaneously, a warning light flashes, and the corresponding warning module issues an alert. This allows for the timely detection and intervention of smoking passengers before the smoke alarm is triggered, effectively preventing disruption to train operation and thus improving safety.

[0084] The above embodiments provide a detailed description of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A high-speed rail toilet infrared temperature measurement and early warning system, characterized in that, It includes several infrared modules (10), a wireless transmission module (20), a central control host computer (30), and several early warning modules (40); The infrared module (10) is used to convert the temperature signal collected in real time in the high-speed rail toilet into an electrical signal and output it; several infrared modules (10) are fixedly installed inside each toilet, and the infrared module (10) includes an infrared lens (101), an infrared detector (102) and a locator (103) connected to each other; the infrared lens (101) is used to focus the infrared radiation emitted by objects in the field of view area onto the infrared detector (102) in real time, wherein the field of view includes a horizontal field of view and a vertical field of view; the infrared detector (102) has a resolution of 384×288 and is used to convert the received temperature signal into an electrical signal and output it; the locator (103) is used to determine the location of abnormal signals; The wireless transmission module (20) is used to transmit the electrical signal output by the infrared module (10) to the central control host computer (30); The central control host computer (30) is used to identify the received electrical signal according to the preset temperature threshold. If it is an abnormal signal, it sends an early warning start command to the corresponding early warning module according to the source of the abnormal signal, and the central control warning light flashes at the same time. The warning module (40) is used to activate and issue a warning according to the warning activation command, warning passengers that smoking is prohibited throughout the train while reminding staff to check.

2. The infrared temperature measurement and early warning system for high-speed rail restrooms according to claim 1, characterized in that, The wireless transmission module (20) includes a wireless transmitting module (201) and a wireless receiving module (202); The wireless transmission module (201) is fixedly installed inside the high-speed rail toilet and is used to transmit the electrical signal output by the infrared module (10); The wireless receiving module (202) is fixedly installed inside the central control room and is used to receive the electrical signals emitted by the wireless transmitting module (201) and transmit them to the central control host computer (30).

3. The infrared temperature measurement and early warning system for high-speed rail restrooms according to claim 1, characterized in that, The warning module (40) is configured as a buzzer, and the number of warning modules (40) is the same as the number of infrared modules (10).

4. The infrared temperature measurement and early warning system for high-speed rail restrooms according to claim 1, characterized in that, It also includes a power supply module (50), which supplies power to the infrared module (10), the wireless transmission module (20), the central control host computer (30) and the early warning module (40) via wires.

5. The infrared temperature measurement and early warning system for high-speed rail restrooms according to claim 1, characterized in that, The preset temperature threshold is set to be greater than 100°C based on the temperature of the lighter flame.

6. A method of using the infrared temperature measurement and early warning system for high-speed rail restrooms as described in any one of claims 1-5, characterized in that, Includes the following steps: S1. Based on the size parameters of the high-speed rail toilet and the smoking behavior characteristics of high-speed rail passengers, the resolution of the infrared detector is determined to be 384×288, and the infrared module is installed at an angle inside the high-speed rail toilet. In step S1, determining the resolution of the infrared detector to be 384×288 includes: The installation location of the infrared module is determined based on the size parameters of the high-speed rail restroom; Based on the installation location of the infrared module, the field of view of the infrared lens is calculated, and based on the smoking behavior characteristics of high-speed rail passengers, the field of view angle occupied by the lighter flame is calculated. Calculate the number of flame temperature points measured within the field of view area based on the field of view angle occupied by the lighter flame; Based on the number of flame temperature points measured within the field of view and the pixel requirement for identifying each temperature point, the resolution of the infrared detector is calculated to be ≥337×243. S2. Install the wireless transmitter module around the infrared module, and install the central control host computer, central control warning light and wireless receiver module inside the central control room; S3. Set a temperature threshold on the central control computer based on the temperature of the lighter flame; S4. When the central control host computer identifies that the temperature signal collected in real time by the infrared module exceeds the preset temperature threshold, it sends an early warning start command to the corresponding early warning module according to the source of the abnormal signal, and the central control warning light flashes at the same time. S5, the early warning module is activated according to the early warning activation command and issues an early warning, warning passengers who sneak into the restroom to smoke, and reminding high-speed rail staff to check and stop them in time.

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