Fire early warning device and fire early warning method

Abstract

The present invention provides a fire early warning device and fire early warning method that achieve early fire risk warning and offer advantages including easy installation, simple maintenance, and high cost-effectiveness. [Solution] The fire alarm device includes a housing installed at a parking position where a vehicle is parked; a sensing module provided within the housing and configured to detect the parking state of the vehicle relative to the parking position; a temperature detection module provided within the housing and configured to detect temperature and generate a detection result; and a processing module provided within the housing and coupled to the sensing module and the temperature detection module, configured to control the temperature detection module to detect the temperature of the bottom of the vehicle when the parking state indicates that the vehicle is parked at the parking position, and to generate an instruction signal when the detection result indicates that the temperature of the bottom of the vehicle exceeds a threshold.

Description

Technical Field

[0001] The present invention relates to an early fire warning device and an early fire warning method, and more particularly, to an early fire warning device and an early fire warning method capable of warning potential vehicle fire risks at an early stage.

Background Art

[0002] With the continuous development and popularization of automotive technology, vehicle safety issues have received increasing attention. Among them, vehicle fires represent particularly serious safety concerns, not only threatening the lives of passengers but also causing significant material damage, especially in crowded parking lots such as parking garages and underground parking lots where the impact of fires can be even more severe.

[0003] In recent years, with the rapid popularization of electric vehicles, the problem of vehicle fires has become a new issue. The lithium-ion batteries used in electric vehicles may experience thermal runaway under specific conditions (such as overcharging, over-discharging, mechanical damage, etc.), which may cause fires. However, compared with conventional gasoline vehicles, electric vehicle fires burn at higher temperatures, last longer, and are more difficult to extinguish. Furthermore, even after a fire appears to be controlled, the lithium-ion battery may reignite due to residual heat, increasing the difficulty of fire suppression.

[0004] Generally, existing vehicle fire prevention and detection methods mainly include in-vehicle fire alarms, parking lot smoke alarm systems, and manual inspections. In-vehicle fire alarms are typically installed inside the vehicle and determine (judge, determine) the occurrence of a fire by detecting smoke or abnormal temperature. However, this method can only issue an alarm after a fire has already occurred and generated obvious smoke or high temperature, and cannot achieve early warning capabilities, especially cannot detect abnormalities in the power battery located at the bottom of electric vehicles in a timely manner. Most parking facility smoke detection systems currently in use detect fires by installing smoke detectors throughout the parking area. However, this method requires the smoke to spread to the detector's location before detection becomes possible, and struggles to timely detect early fires in the underside or inside of a vehicle, particularly battery malfunctions. While manual inspections can quickly identify abnormal situations, they are labor-intensive, costly, and cannot achieve 24-hour continuous monitoring. Furthermore, abnormal temperatures in the underside of vehicles, especially in batteries beneath electric vehicles, are difficult to detect through visual inspection alone.

[0005] Therefore, there is an urgent need for a vehicle fire early warning system that can detect abnormalities in the early stages of a fire, and in particular a vehicle fire early warning system that can effectively monitor the undercarriage area. Such systems should be adaptable to different types of vehicles, and in particular, cost-effective and system-integrable while providing more effective protection for an increasing number of electric vehicles. [Overview of the project] [Problems that the invention aims to solve]

[0006] Therefore, the present invention provides a fire early warning device and a fire early warning method that achieve early fire risk warning and offer advantages including easy installation, simple maintenance, and high cost efficiency. [Means for solving the problem]

[0007] One embodiment of the present invention discloses a fire alarm device comprising: a housing mounted on a parking position where a vehicle is parked; a sensing module provided within the housing and configured to detect the parking state of the vehicle relative to the parking position; a temperature detection module provided within the housing and configured to detect temperature and generate a detection result; and a processing module provided within the housing and coupled to the sensing module and the temperature detection module, configured to control the temperature detection module to detect the temperature of the bottom of the vehicle when the parking state indicates that the vehicle is parked in the parking position, and to generate an instruction signal when the detection result indicates that the temperature of the bottom of the vehicle exceeds a threshold.

[0008] Another embodiment of the present invention discloses a fire alarm method that includes the steps of: detecting the temperature of the bottom of a vehicle and generating a detection result when the vehicle is parked in a parking position; and generating an instruction signal when the detection result indicates that the temperature of the bottom of the vehicle exceeds a threshold.

[0009] These and other objects of the present invention will become undoubtedly apparent to those skilled in the art after reading the following detailed description of preferred embodiments shown in various figures and drawings. [Brief explanation of the drawing]

[0010] [Figure 1] This is a schematic diagram of a disaster monitoring system according to one embodiment of the present invention. [Figure 2] This is a schematic diagram of a fire alarm system according to one embodiment of the present invention. [Figure 3A] This is a schematic diagram of a roadside parking area. [Figure 3B] This is a schematic diagram of a roadside parking area. [Figure 4A] This is a schematic diagram of a multi-story parking structure. [Figure 4B] This is a schematic diagram of a multi-story parking structure. [Figure 5] This is a schematic diagram of the fire alarm process according to one embodiment of the present invention. [Modes for carrying out the invention]

[0011] Certain terms are used throughout the specification and throughout the following claims to refer to specific components. As those skilled in the art will understand, hardware manufacturers sometimes refer to components by different names. This document is not intended to distinguish between components that have different names but the same function. In the following specification and claims, the terms “include” and “comprise” are used in open-ended form and should be interpreted as “including, but not limited to,…”. Furthermore, the term "connection" is intended to mean an indirect or direct electrical connection. Therefore, when one device is coupled to another, the connection may be made via a direct electrical connection or via an indirect electrical connection through other devices and connections.

[0012] Please refer to Figure 1, which shows a schematic diagram of disaster monitoring system 1 according to one embodiment of the present invention. The disaster monitoring system 1 includes multiple fire alarm devices 10 and a central control system 12. Each fire alarm device 10 is installed in a parking space, for example, buried beneath the parking space, capable of detecting the bottom temperature of a vehicle parked above it, and communicates with a central control system 12 by wired or wireless means to provide early fire risk warnings. It should be noted that the installation of the fire alarm device 10 is not limited to the buried method, and any installation method that can securely fix the fire alarm device 10 in the parking position is applicable to the present invention.

[0013] Specifically, please refer to Figure 2, which shows a schematic diagram of one of the fire alarm devices 10 shown in Figure 1. The fire alarm device 10 includes a housing 200, a sensing module 202, a temperature detection module 204, a processing module 206, a communication module 208, an alarming unit 210, and a power supply module 212. The housing 200 is used to accommodate and protect other components and can be attached to a parking position, such as being buried under the ground of the parking position. The sensing module 202 is provided within the housing 200, coupled to the processing module 206, and used to detect the parking state at the parking position. The temperature detection module 204 is provided within the housing 200, coupled to the processing module 206, and used to detect temperature and generate a detection result. The processing module 206 is provided within the housing, coupled to other modules. When the parking state detected by the sensing module 202 indicates that the vehicle is parked at the parking position, it controls the temperature detection module 204 to detect the bottom temperature of the vehicle. When the detection result from the temperature detection module 204 indicates that the bottom temperature of the vehicle exceeds the threshold value, it is used to generate an instruction signal. The communication module 208 is provided within the housing 200, coupled to the processing module 206, and used to transmit the detection result from the temperature detection module 204 or the instruction signal from the sensing module 202 to the central control system 12. The alarming unit 210 is coupled to the processing module 206 and is used to receive an instruction signal from the processing module 206 and issue an alarming signal such as one or more of voice, light, or mobile phone push notification. The power supply module 212 is provided within the housing 200 and is used to supply power to the fire alarm device 10.

[0014] In short, the fire alarm device 10 can be buried under the ground of the parking position. When a vehicle is parked on it, it can detect the bottom temperature of the vehicle to determine whether there is a fire risk, and further can send relevant information back to the central control system 12. Therefore, embodiments of the present invention can provide appropriate warnings in the early stages of a potential vehicle fire, enabling relevant personnel to respond early, prevent a more serious fire, or take preventative measures such as evacuation and warnings to prevent greater damage. The fire alarm device 10 shown in Figure 2 is one embodiment of the present invention, and it should be noted that those skilled in the art can make various modifications without being limited to this configuration. For example, modules within the fire alarm system 10 can be added, removed, or replaced according to actual needs. In some embodiments, the notification unit 210 can be omitted, and notification can be issued relying solely on the central control system 12, or the communication module 208 can be omitted, and notification signals can be issued relying solely on the notification unit 210. Furthermore, in some embodiments, the sensing module 202 can be omitted, meaning that the fire alarm device 10 does not need to detect whether or not the vehicle is parked in the parking position, and instead directly uses the temperature detection module 204 to detect the temperature of the bottom of the vehicle.

[0015] In one embodiment, the housing 200 may include an upper housing and a lower housing. The lower housing is embedded within the parking space, while the upper housing can be fitted into the lower housing and protrudes slightly above the parking space. Furthermore, the upper housing may include a transparent or translucent portion to enable sensing by the sensing module 202 and the temperature detection module 204. Preferably, the housing 200 is waterproof, dustproof, and pressure-resistant to ensure that the internal components can operate normally under adverse conditions. For example, the applicant of the present invention provides in Taiwan Patent Application No. 112208804 and No. 112212707 a sensing device capable of detecting parking conditions, which uses a combination structure of an upper housing and a lower housing that can be appropriately modified for use in a parking environment and applied to embodiments of the present invention.

[0016] In one embodiment, the sensing module 202 may be a combination of one or more infrared sensors, magnetic sensors, millimeter-wave sensors, or camera lenses, but is not limited to these options. Any module or component capable of accurately detecting whether a vehicle is parked in a parking space is suitable for implementing the sensing module 202. Furthermore, to improve detection accuracy, the number of sensors in the sensing module 202 is not limited to one; multiple sensors or a redundant design can be used to enhance accuracy. Furthermore, if the fire alarm device 10 of this embodiment is integrated into a smart parking management system, such as with the architecture of Taiwan Patent Applications No. 112208804 and No. 112212707, the sensing module 202 can be used to detect environmental information of the parking location, and the processing module 206 can determine the vehicle entry, parking stabilization, and exit times, and process image capture upload and recording functions. Specifically, in one embodiment, the sensing module 202 may include one or more of the following: an ultrasonic unit, a millimeter-wave radar detection unit, an image capture unit, and a light supplementation component. The ultrasonic unit can detect objects within a specific range (such as 5 meters) using ultrasonic detection, thereby determining vehicle entry, parking stability, and exit. The millimeter-wave radar detection unit uses millimeter-wave radar detection to improve the accuracy of vehicle entry and exit decisions while eliminating interference from non-motorized vehicles, pedestrians, and other objects. The image capture unit can collect real-time images, capture images of vehicle entry and exit, and photograph the parking position at specific intervals (e.g., every 10 minutes) when a vehicle is parked, thereby meeting regulatory requirements. Light supplementation components are used in flash supplementation to ensure clarity in nighttime images, reduce image noise, and eliminate adverse conditions caused by license plate reflections. Therefore, the processing module 206 can determine the parking status of the parking space and report it to the central control center of the smart parking management system (which can be integrated with the central control system 12).

[0017] In another embodiment, the sensing module 202 may include multiple sensors, and when the detection result of one sensor indicates a change in the parking state of the parking position, at least another sensor is activated for detection, and the detection results from at least the other sensors are transmitted to the smart parking management system. In other words, the sensing module 202 can also implement a two-stage detection mechanism. The first stage is a trigger phase in which one sensor detects environmental information about the parking location. If the detection result indicates a change in the parking condition, the process proceeds to the second stage. The second stage is an inspection phase in which at least one other sensor performs detection and transmits the detection results to the smart parking management system. This effectively eliminates error signals caused by limitations in sensing technology, allowing the management endpoint of the smart parking management system to accurately determine vehicle entry, parking stabilization, and exit times, thereby enabling parking ticketing, fee collection, and other management tasks, avoiding unnecessary disputes, and achieving the objectives of unmanned management and smart fee collection.

[0018] Detailed implementation of the integration of the fire alarm device 10 into the smart parking management system described above can be appropriately derived by those skilled in the art by referring to Taiwan Patent Applications No. 112208804 and No. 112212707, and will not be further detailed here.

[0019] In one embodiment, the temperature detection module 204 may be one or more of the following: an infrared sensor, a thermocouple, a thermistor, or a resistance temperature detector. Similarly, to improve detection accuracy, the number of detectors in the temperature detection module 204 is not limited to one, but can be increased by using multiple detectors or a redundant design, meaning that the temperature detection module 204 can detect over a wide area or multiple points, but is not limited to these configurations.

[0020] In one embodiment, the communication module 208 may be one or more of the following: a Bluetooth® module, a Wi-Fi® module, a telecommunications signal module, or a wired network module, but is not limited to these options. Any module or component that enables the processing module 206 to exchange data with the central control system 12 is suitable for implementing the communication module 208.

[0021] Furthermore, the power module 212 may include, but is not limited to, one or more of the following: a battery, a solar panel, a wireless charge receiver, and a mains power conversion module. Furthermore, the power module 212 is preferably designed for easy maintenance and replacement to ensure long-term stable operation of the device and reduce maintenance costs.

[0022] On the other hand, the operational logic of the processing module 206 can be appropriately adjusted according to system or application scenario requirements. For example, when the parking status indicates that the vehicle is parked (either just parked or parked for some time), the processing module 206 can control the temperature detection module 204 to continuously monitor the temperature. As the vehicle cools down after being turned off, the temperature should gradually decrease; therefore, if the temperature continues to rise after the vehicle is parked, a corresponding instruction signal may be generated. In other words, the processing module 206 may generate an instruction signal only when the vehicle has been parked in the parking space for longer than a predetermined time (e.g., 15 minutes) and the detection result indicates that the vehicle's bottom temperature exceeds a threshold. This can reduce false alarms caused by temporary parking of recently parked vehicles or residual engine heat. Furthermore, the processing module 206 can use multiple strategies when determining whether the vehicle's bottom temperature is abnormal in order to improve accuracy and reduce false alarms. Specifically, the processing module 206 can consider both the absolute temperature value and the rate of temperature change. For example, with respect to absolute temperature, the processing module 206 can compare the actual temperature measured by the temperature detection module 204 with a predetermined safety threshold (e.g., 80°C). If the actual temperature exceeds this threshold, it is considered abnormal. On the other hand, to avoid interference from environmental temperature changes that may affect the decision (such as direct sunlight or cold weather), the processing module 206 can also calculate the rate of temperature change. Specifically, the processing module 206 can continuously record temperature data over a certain period (such as 15 minutes) after the vehicle is parked and calculate the rate of temperature change. If the rate of temperature increase exceeds a predetermined threshold (e.g., 1°C / min), it is considered a potential abnormal condition, even if the absolute temperature has not reached an alarm level. Furthermore, the processing module 206 can compare the measured bottom temperature with the ambient temperature. If the temperature difference between the measured bottom temperature and the surrounding ambient temperature exceeds a certain threshold (such as 20°C), it may be considered abnormal. These multiple decision-making mechanisms are intended, but are not limited to, enabling the fire alarm system 10 to more accurately identify potential vehicle fire risks while effectively reducing false alarms caused by environmental factors.

[0023] Furthermore, when generating an instruction signal, the processing module 206 may include not only temperature anomaly information but also identification information of the corresponding fire alarm device 10, such as the device's MAC address, IP address, or a pre-configured device ID. The central control system 12 can immediately locate a specific parking position upon receiving an instruction signal. For example, the central control system 12 can maintain a lookup table that associates the identification information of each fire alarm device 10 with its actual mounting location. This location information may include the road section, address, parking floor and zone number, or even a specific parking space number, in which the parking space is located. Therefore, in the case of roadside parking spaces or large parking lots, this positioning function can help management or emergency personnel quickly locate potentially problematic vehicles and take timely action. Furthermore, if the central control system 12 supports an electronic map system, this location information can be directly marked on the map to further improve response time.

[0024] Furthermore, although the notification unit 210 is shown inside the housing 200 in Figure 2, in other embodiments the notification unit 210 may be a notification device located outside the housing 200, which receives instruction signals from the processing module 206 via a wired or wireless connection and emits notification signals. Furthermore, when the notification unit 210 needs to send mobile push notifications as notification signals, it should work with the communication module 208 to send them to a cloud service or a local server. The notification scope may include devices capable of receiving these alerts, such as mobile phones, fire alarm systems, central control computers, and tablets, and the system can send notifications to multiple recipients based on different circumstances. For example, if the parking lot is equipped with a license plate recognition system connected to a vehicle owner information database, the central control system 12 can directly send mobile push notifications to the registered vehicle owner, including alarms regarding the vehicle's potential fire risk and specific location information. Secondly, regardless of whether the owner can be contacted, the central control system 12 can send a notification to the parking management center, enabling relevant staff to quickly arrive at the scene for a preliminary inspection and any necessary precautions. If the alert status remains unresolved after a certain period, the central control system 12 can automatically notify the local fire department of information such as the exact address of the parking lot, the location of the potentially burning vehicle, and the nearest fire access route, to help firefighters plan rescue operations more effectively. This multi-level notification mechanism allows the present invention to maximize the reduction of losses due to vehicle fires while ensuring that all relevant units receive information in a timely manner and perform appropriate actions.

[0025] In the above embodiment, it should be noted that the parking location broadly refers to a traffic facility used to park or stop a vehicle that is related to the vehicle receiving the service. In one embodiment, if the vehicle is a drone, the parking space may be appropriately replaced by a drone platform. In another embodiment, if the vehicle is a shared electric bicycle, the parking space may be appropriately replaced with a stand for the electric bicycle. Such appropriate derivative modifications based on different types of vehicles should be considered within the realm of the common art of those skilled in the art.

[0026] Furthermore, the fire alarm device 10 of the present invention can be widely applied to various parking scenarios such as indoor parking lots, outdoor parking lots, and roadside parking spaces. By installing fire alarm devices 10 in each parking space and connecting them to a central control system 12, the disaster monitoring system 1 can be implemented to establish a comprehensive vehicle fire alarm network that not only enhances the safety of the parking lot but also provides greater peace of mind to vehicle owners.

[0027] For example, Figure 3A shows a schematic diagram of roadside parking lot 3. For simplicity, Figure 3A shows parking spaces P1 to P4 in a roadside parking lot 3, and each parking space has a built-in fire alarm device 10 that can be connected to a central control system 12 via wireless or wired connection. As shown in Figure 3B, when the vehicle 30 enters the parking space P2, the sensing module 202 of the fire alarm device 10 in the parking space P2 detects that the vehicle 30 has stopped in the parking space P2 and can transmit the detected parking state to the processing module 206. The processing module 206 can control the temperature detection module 204 to detect the bottom temperature of the vehicle 30 immediately, or after the vehicle 30 has been parked in the parking space P2 for a period of time. At this time, if the detection result from the temperature detection module 204 indicates that the bottom temperature of the vehicle 30 exceeds a threshold, for example, if the absolute temperature value exceeds a predetermined safety threshold, or if the temperature rise rate exceeds a predetermined threshold, the processing module 206 can generate an instruction signal and transmit it to the central control system 12 via the communication module 208, or emit a notification signal via the notification unit 210. The instruction signal transmitted to the central control system 12 may include identification information that identifies the parking space P2, enabling relevant personnel to take appropriate action early. If the notification unit 210 issues a mobile push notification as a notification signal, the notification can be sent to multiple recipients, such as the vehicle owner, parking management center, and fire department. In this situation, relevant personnel can take action at the first signs of a fire to prevent it from becoming more serious, or they can take early evacuation and warning measures to prevent greater damage.

[0028] Figure 4A shows a schematic diagram of the multi-story parking structure 4. For simplicity, Figure 4A shows parking spaces P1-1 to P1-4 and P2-1 to P2-4 on the floor L2 of the multi-story parking structure 4, and each parking space has a built-in fire alarm device 10 that can be connected to a central control system 12 via wireless or wired connection. As shown in Figure 4B, when the vehicle 40 enters the parking space P1-2, the sensing module 202 of the fire alarm device 10 in the parking space P1-2 detects that the vehicle 40 has stopped in the parking space P1-2 and can transmit the detected parking state to the processing module 206. The processing module 206 can control the temperature detection module 204 to detect the bottom temperature of the vehicle 40 immediately, or after the vehicle 40 has been parked in the parking space P1-2 for a period of time. At this time, if the detection result from the temperature detection module 204 indicates that the bottom temperature of the vehicle 40 exceeds a threshold, for example, if the absolute temperature value exceeds a predetermined safety threshold, or if the temperature rise rate exceeds a predetermined threshold, the processing module 206 can generate an instruction signal and transmit it to the central control system 12 via the communication module 208, or emit a notification signal via the notification unit 210. The instruction signal transmitted to the central control system 12 may include identification information that identifies parking spaces P1-2, for example, "L2, P1-2," enabling relevant personnel to take appropriate action early. If the notification unit 210 issues a mobile push notification as a notification signal, the notification can be sent to multiple recipients, such as the vehicle owner, parking management center, and fire department. In this situation, relevant personnel can take action at the first signs of a fire to prevent it from becoming more serious, or they can take early evacuation and warning measures to prevent greater damage.

[0029] The operation of the fire alarm device 10 described above can be summarized as a fire alarm process 50, as shown in Figure 5. The fire alarm process 50 is, Step 500 to begin, Step 502 involves detecting the temperature of the underside of the vehicle when the vehicle is parked in the designated parking position and generating a detection result. Step 504 generates an instruction signal when the detection result indicates that the temperature of the vehicle's underside exceeds a threshold, This includes step 506, which terminates the process.

[0030] For detailed operation and variations of the fire alarm process 50, please refer to the description above; the description is omitted here.

[0031] In conclusion, the present invention provides an efficient and reliable fire alarm system suitable for, but not limited to, new energy vehicles such as electric vehicles. By monitoring the bottom temperature, early fire risk alerts can be achieved, offering advantages including easy installation, simple maintenance, and high cost-effectiveness.

[0032] Those skilled in the art will readily see that many modifications and changes can be made to the apparatus and method while maintaining the teachings of the present invention. Therefore, the above disclosure should be interpreted as being limited only by the boundaries and scope of the attached claims.

Claims

1. A housing installed in the parking position where the vehicle is parked, A sensing module provided within the housing and configured to detect the parking state of the vehicle relative to the parking position, A temperature detection module is provided within the housing and configured to detect temperature and generate detection results, A fire alarm device comprising: a processing module provided within the housing and coupled to the sensing module and the temperature detection module, which controls the temperature detection module to detect the temperature of the bottom of the vehicle when the parking state indicates that the vehicle is parked in the parking position, and generates an instruction signal when the detection result indicates that the temperature of the bottom of the vehicle exceeds a threshold or the rate of temperature change exceeds a set value.

2. The fire alarm device according to claim 1, wherein the sensing module is selected from one or more of an infrared sensor, a magnetic sensor, a millimeter-wave sensor, and a camera lens.

3. The fire alarm device according to claim 1, wherein the temperature detection module is selected from one or more of an infrared sensor, a thermocouple, a thermistor, and a resistance thermometer.

4. The fire alarm device according to claim 1, further comprising a communication module provided within the housing, coupled to the processing module, and configured to transmit the detection result or the instruction signal to a central control system.

5. The fire alarm device according to claim 4, wherein the communication module is selected from one or more of the following: a Bluetooth® module, a Wi-Fi® module, a telecommunications signal module, and a wired network module.

6. The fire alarm device according to claim 1, further comprising a power supply module provided within the housing and configured to supply power to the fire alarm device.

7. The fire alarm device according to claim 6, wherein the power supply module includes one or more of a battery, a solar panel, a wireless charging receiver, and a main power conversion module.

8. The fire alarm device according to claim 1, wherein the housing includes an upper housing and a lower housing, the lower housing being embedded in the ground of the parking location, and the upper housing being fitted into the lower housing and protruding above the ground of the parking location.

9. The fire alarm device according to claim 1, wherein the housing has waterproof, dustproof, and pressure-resistant properties due to the fitting structure of the upper housing and the lower housing.

10. The fire alarm device according to claim 1, further comprising an alarm unit coupled to the processing module and configured to receive the instruction signal and emit an alarm signal, wherein the alarm signal is selected from one or more of the following: voice, light, and mobile phone push notification.

11. The fire alarm device according to claim 1, wherein the processing module generates the instruction signal when the parking state indicates that the vehicle has been parked in the parking position for a longer period of time than a predetermined time, and the detection result indicates that the temperature of the bottom of the vehicle exceeds the threshold, the predetermined time being the time required for residual engine heat to dissipate.

12. The steps include: detecting the temperature of the underside of the vehicle when the vehicle is parked in the parking position and generating a detection result; A fire alarm method comprising the step of generating an instruction signal when the detection result indicates that the temperature of the bottom of the vehicle exceeds a threshold or the rate of temperature change exceeds a set value.

13. The fire alarm method according to claim 12, further comprising the step of detecting the vehicle parked in the parking position using one or more of an infrared sensor, a magnetic sensor, a millimeter-wave sensor, and a camera lens.

14. The fire alarm method according to claim 12, wherein the step of detecting the temperature of the bottom of the vehicle is performed by one or more of an infrared sensor, a thermocouple, a thermistor, and a resistance thermometer.

15. The fire alarm method according to claim 12, further comprising the step of transmitting the detection result or the instruction signal to a central control system.

16. The fire alarm method according to claim 15, wherein the step of transmitting the detection result or the instruction signal to the central control system is performed by one or more of the following: a Bluetooth® module, a Wi-Fi® module, a telecommunications signal module, and a wired network module.

17. The fire alarm method according to claim 12, further comprising the step of supplying power by one or more of a battery, a solar panel, a wireless charging receiver, and a main power conversion module.

18. The fire alarm method according to claim 12, further comprising the step of issuing an alarm signal based on the instruction signal, wherein the alarm signal is selected from one or more of voice, light and mobile phone push notifications.

19. The fire alarm method according to claim 12, wherein the step of generating the instruction signal includes generating the instruction signal when the parking condition indicates that the vehicle has been parked in the parking position for a longer period of time than a predetermined time, and the detection result indicates that the temperature of the bottom of the vehicle exceeds a threshold, the predetermined time being the time required for residual engine heat to dissipate.

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