A smoke detection alarm device for vehicles

Abstract

The utility model provides a kind of vehicle smoke detection alarm device, at least includes: smoke detection alarm, TSN gateway, vehicle host computer, T-box, wherein, TSN gateway is connected with vehicle host computer and T-box by vehicle ethernet bus respectively, TSN gateway connects smoke alarm, T-box by CAN bus, and T-box is connected with cloud server by wireless communication module, vehicle host computer and T-box send to cloud server storage after obtaining smoke alarm information from TSN gateway. Through smoke detection alarm device, possible fire in vehicle can be found in time and alarm, remind passengers in vehicle to escape as soon as possible, while alarm information is sent to cloud server for saving by wireless mode.

Description

Technical Field

[0001] This utility model relates to the field of smoke detection alarm, and in particular to a vehicle smoke detection alarm device. Background Technology

[0002] With the rapid development of automotive intelligence and connectivity, the number of electronic control units (ECUs) inside vehicles has increased dramatically, and the traditional CAN (Controller Area Network) bus is gradually facing bottlenecks in terms of bandwidth and real-time performance. Applications such as in-vehicle infotainment systems, advanced driver assistance systems (ADAS), and vehicle-to-everything (V2X) have generated massive data interaction demands, driving the evolution of in-vehicle network architecture towards Ethernet technology with higher bandwidth and lower latency.

[0003] New energy vehicles have experienced rapid development in recent years, but their safety has also been a continuous concern, with frequent spontaneous combustion incidents further raising public awareness. Existing vehicle fire alarm systems are mostly independent, single-function devices. They typically use buzzers, LED lights, etc., for local alarms, or send SMS messages via simple GPRS modules for remote alarms. These systems have the following drawbacks: 1. High latency in alarm information interaction, failing to meet the functional safety requirements of high-level autonomous driving; 2. Limited alarm methods, resulting in poor warning effectiveness in noisy or brightly lit in-vehicle environments; 3. System isolation, unable to effectively integrate with advanced human-machine interaction systems (such as the central control screen and in-vehicle audio) and body control systems (such as lighting control), failing to fully utilize vehicle resources to achieve the most efficient alarm response.

[0004] Time-Sensitive Networking (TSN), as a core technology of next-generation vehicular networks, provides deterministic low-latency transmission guarantees for critical data by incorporating time synchronization and traffic scheduling mechanisms into Ethernet. Therefore, designing a vehicle smoke detection device that can be integrated into future vehicular TSN network architectures to achieve efficient multi-system collaboration and real-time reliable alarms is a pressing issue in the current technological field. Utility Model Content

[0005] Based on the deficiencies of existing technologies, this utility model provides a vehicle smoke detection alarm device, which includes at least: a smoke detector alarm, a TSN gateway, a vehicle host, and a T-box. The TSN gateway is connected to the vehicle host and the T-box via a vehicle Ethernet bus, the TSN gateway is connected to the smoke detector alarm via a CAN bus, and the T-box is connected to a cloud server via a wireless communication module.

[0006] Optionally, the smoke detection alarm includes: a microcontroller, a smoke collector, a temperature collector, and a CAN interface module, wherein the microcontroller is connected to the smoke collector, the temperature collector, and the CAN interface module respectively;

[0007] The smoke collector is used to detect the smoke concentration inside the vehicle in real time and send the smoke concentration data to the microcontroller.

[0008] The temperature acquisition device is used to detect the temperature of the vehicle's interior environment in real time and send the temperature data to the microcontroller;

[0009] The microcontroller is configured to encode alarm signals into CAN data frames and output them to the CAN bus through the CAN interface module.

[0010] Optionally, the smoke detector includes a voice recognition module electrically connected to the microcontroller, which receives and recognizes voice commands issued by the user and sends the recognition results to the microcontroller.

[0011] Further optionally, the smoke detector includes a button setting module, which is electrically connected to the microcontroller and is used for users to manually input or adjust preset alarm thresholds.

[0012] Optionally, the smoke detection alarm includes a display module electrically connected to the microcontroller for displaying smoke concentration data, temperature data, and system operating status in real time.

[0013] Optionally, the TSN gateway is connected to the vehicle domain controller via an in-vehicle Ethernet bus, and the vehicle domain controller is connected to the power supply lines of the vehicle's hazard warning lights and interior dome lights.

[0014] Optionally, the vehicle-mounted host obtains alarm information through a TSN gateway;

[0015] Alarm information includes: smoke concentration, temperature, and the time when the smoke concentration and temperature were collected.

[0016] Further optionally, the vehicle host is connected to the central control screen via a high-speed video signal bus; the vehicle host is connected to the speakers of the vehicle audio system via an audio power amplifier and corresponding audio output lines.

[0017] Further optionally, the T-box includes:

[0018] The T-box main processor is electrically connected to the vehicle's Ethernet bus;

[0019] The wireless communication module is connected to the T-box main processor via an internal data interface;

[0020] The SIM card interface is electrically connected to the wireless communication module and is used to install the SIM card.

[0021] An external antenna interface is electrically connected to the wireless communication module and is used to connect a communication antenna.

[0022] The T-box main processor is configured to integrate alarm information and send it to the cloud server through the internal data interface and wireless communication module.

[0023] Beneficial effects:

[0024] The technical solution provided by this utility model involves installing a smoke detector alarm inside the vehicle to monitor the environment inside and outside the vehicle in real time, simultaneously monitoring two key fire indicators: smoke and temperature. Fires are usually accompanied by a rapid increase in smoke and temperature. By setting alarm logic for "excessive smoke concentration or excessive temperature," the fire situation can be detected earlier and more accurately than with a single sensor, effectively reducing false alarms caused by a single environmental factor (such as smoke without high-temperature water vapor).

[0025] The adoption of a TSN network architecture ensures deterministic low-latency transmission of critical alarm signals within the vehicle, significantly improving alarm response speed and reliability. Integrating independent alarms into the vehicle network enables seamless collaboration with the onboard host, body domain controller, and T-box, fully utilizing the vehicle's most powerful audible, visual, and electrical warning resources.

[0026] By connecting the T-box to the cloud server, when a vehicle is parked (such as in a parking lot or on the roadside) and the owner is not nearby, if a fire risk is detected, the system can not only provide a physical warning on the vehicle but also proactively send alarm information to the cloud and immediately push it to the owner's mobile phone. This allows the owner and the OEM to understand the vehicle's status as soon as possible and make appropriate emergency plans. Attached Figure Description

[0027] The following figures are for illustrative purposes only and do not limit the scope of the present invention.

[0028] Figure 1 This is a schematic diagram of the structure of a vehicle smoke detection alarm device according to an embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of the structure of a T-box according to an embodiment of the present invention. Detailed Implementation

[0030] To provide a clearer understanding of the technical features, objectives, and effects of this invention, specific embodiments of the present invention are now described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same parts. For the sake of simplicity, the parts related to the present invention are shown schematically in each drawing and do not represent their actual structure as a product. Furthermore, for the sake of clarity and ease of understanding, in some drawings, components with the same structure or function are only schematically depicted, or only one is labeled.

[0031] In this utility model, "connection" can include direct connection, indirect connection, communication connection, and electrical connection, unless otherwise specified.

[0032] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly specifies otherwise. It will also be understood that, when used in the specification, the terms “comprising” and / or “including” mean the presence of the stated features, values, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, values, steps, operations, elements, components, and / or groups thereof. As used herein, the term “and / or” includes any and all combinations of one or more of the listed related items.

[0033] This utility model provides a vehicle smoke detection and alarm device, such as Figure 1 As shown, it includes a smoke detector alarm, a TSN gateway, a vehicle-mounted host, and a T-box.

[0034] The smoke detector alarm functions as an independent intelligent sensor node. Internally, it includes a microcontroller, a smoke collector, a temperature collector, and a CAN interface module. The microcontroller, acting as the alarm's central processing unit, connects to both the smoke collector and the temperature collector to acquire real-time smoke concentration and temperature data inside the vehicle. The microcontroller uses an STM32F103 chip as its control core. The STM32F103 chip utilizes the MCS-51 core, featuring 32 I / O ports, 8KB of FLASH memory, and 512 bytes of RAM. By programming with a suitable compiler, it can control peripheral devices.

[0035] The smoke collector uses the MQ-2 semiconductor gas smoke sensor, which consists of a sensitive element made of a miniature Al2O3 ceramic tube, a SnO2 sensitive layer, measuring electrodes, and a heater, fixed in a cavity made of plastic or stainless steel. Specifically, the heater preheats the gas-sensitive element. When the gas-sensitive element is powered on, its internal resistance is very low, and it takes 1-2 minutes of heating to return to its original stable state. Heating the gas-sensitive element improves the accuracy of smoke collection. The MQ-2 semiconductor gas smoke sensor includes six pin-shaped leads, four for signal extraction and two for providing heating current.

[0036] The temperature acquisition unit includes a DS18B20 temperature sensor module, which is a digital temperature sensor. It communicates with the MCU using a single-wire protocol, simplifying wiring. Each sensor has a unique 64-bit serial number and can directly output digital temperature values ​​without the need for an external ADC. It offers high accuracy, practically reaching ±0.5℃, making it ideal for multi-point temperature monitoring.

[0037] The microcontroller is also connected to a CAN interface module. When the microcontroller determines that a fire has occurred based on its internal algorithm (e.g., when both smoke concentration and temperature change rate exceed the limit), it encodes an alarm signal containing specific data into a standard CAN data frame and outputs it to the CAN bus through the CAN interface module.

[0038] Specifically, when a car catches fire, the smoke detector alarm detects that the smoke concentration inside or outside the vehicle exceeds a preset threshold. It records the current smoke concentration, current temperature, and time of occurrence, and sends the alarm information to the TSN gateway via the CAN bus. The TSN gateway then sends the alarm information to the vehicle host for storage and to the cloud server via the T-box.

[0039] Once the cloud server receives the alarm message, it sends the alarm information to the vehicle owner or the OEM, enabling the vehicle owner and the OEM to be aware of the current situation in a timely manner, take measures, and mitigate losses.

[0040] To enhance human-computer interaction, the smoke detector alarm may further include a voice recognition module electrically connected to a microcontroller for receiving user voice commands. The voice recognition module uses an LD3320 voice recognition chip, allowing users to interact with the system via voice commands, such as receiving voice commands to turn the alarm function on or off.

[0041] The smoke detection alarm can further include a key setting module electrically connected to the microcontroller for manually setting the alarm threshold; and a display module for locally displaying real-time data and system status. The display module uses LCD1602, a liquid crystal screen that can display 2 lines, with 16 English characters in each line, to visually show real-time data and system status to the user, facilitating debugging and daily viewing.

[0042] The TSN gateway is the network center of the whole system. One end of it is connected to the smoke detection alarm through the CAN bus, and the other end is connected to the in-vehicle host and the T-box respectively through the in-vehicle Ethernet bus that supports the TSN protocol. The main function of the TSN gateway is to perform protocol conversion. It can real-time parse and repackage the alarm data frame received from the CAN bus into an Ethernet data packet, and then use the deterministic transmission mechanism of TSN to broadcast it to the high-speed in-vehicle Ethernet bus.

[0043] The in-vehicle host, as the human-machine interaction center inside the vehicle, is also connected to the in-vehicle Ethernet bus. In this embodiment, it is connected to a central control screen through a high-speed video signal bus (such as LVDS), and is connected to the speaker of the in-vehicle audio system through an audio power amplifier and the corresponding audio output line. When the in-vehicle host receives the alarm data packet forwarded by the TSN gateway from the Ethernet bus, the processor inside it will immediately trigger the top-level alarm program, interrupt the current task, display a full-screen warning on the central control screen, and instruct the in-vehicle audio system to play an emergency voice prompt.

[0044] Combined Figure 2 , the T-box is the vehicle's remote communication terminal, also connected to the in-vehicle Ethernet bus. Its internal structure includes a T-box main processor, a wireless communication module (such as a 4G / 5G module), a SIM card interface, and an external antenna interface. When the T-box main processor receives the alarm data packet from the Ethernet bus, it will immediately drive the wireless communication module through its internal data interface, and send the emergency information containing the alarm details and the vehicle's GPS location to the remote cloud server through the mobile network.

[0045] To achieve more comprehensive vehicle integration, this device can also include a body domain controller. The body domain controller is also connected to the TSN gateway through the in-vehicle Ethernet bus, and is respectively connected to the power supply lines of the vehicle's hazard warning lights (flashing lights) and the interior ceiling lights through its power output ports. When the body domain controller also receives the alarm data packet from the TSN gateway, it will immediately perform physical warning actions, lighting or flashing the relevant vehicle lights to provide a strong visual warning to the people inside and outside the vehicle.

[0046] In summary, this invention, through the bridging function of the TSN gateway, efficiently integrates the underlying sensors, the in-vehicle human-machine interaction system, the vehicle body control system, and the remote communication system into a unified, high-speed, and reliable network architecture, achieving unprecedented intelligent collaborative alarm capabilities.

[0047] The above description is merely a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments. Those skilled in the art will understand that the form in this embodiment is not limited thereto, nor is the adjustment method limited thereto. It is understood that other improvements and variations directly derived or conceived by those skilled in the art without departing from the basic concept of the present invention should be considered to be included within the protection scope of the present invention.

Claims

1. A smoke detection alarm device for vehicles, characterized in that, At least including: smoke The system includes a smoke detector, a TSN gateway, a vehicle-mounted host, and a T-box. The TSN gateway is connected to both the vehicle-mounted host and the T-box via the vehicle's Ethernet bus. The TSN gateway is connected to the smoke detector via a CAN bus. The T-box is connected to a cloud server via a wireless communication module.

2. The smoke detection alarm device for vehicles as claimed in claim 1, wherein the smoke The detection alarm includes: a microcontroller, a smoke detector, a temperature detector, and a CAN interface module. The microcontroller is connected to the smoke detector, the temperature detector, and the CAN interface module. The smoke collector is used to detect the smoke concentration inside the vehicle in real time and send the smoke concentration data to the microcontroller. The temperature acquisition device is used to detect the temperature of the vehicle's interior environment in real time and send the temperature data to the microcontroller; The microcontroller is configured to encode alarm signals into CAN data frames and output them to the CAN bus through the CAN interface module.

3. The smoke detection alarm device for vehicles as claimed in claim 2, wherein the smoke The detection alarm includes a voice recognition module, which is electrically connected to the microcontroller and is used to receive and recognize voice commands issued by the user and send the recognition results to the microcontroller.

4. The smoke detection alarm device for vehicles as claimed in claim 2, wherein the smoke The detection alarm includes a button setting module, which is electrically connected to the microcontroller and is used for users to manually input or adjust preset alarm thresholds.

5. The vehicle smoke detection and alarm device as described in claim 2, characterized in that the smoke... The detection alarm includes a display module, which is electrically connected to the microcontroller and is used to display smoke concentration data, temperature data, and system operating status in real time.

6. The vehicle smoke detection and alarm device as described in claim 1, characterized in that, The TSN gateway is connected to the vehicle domain controller via an in-vehicle Ethernet bus. The vehicle domain controller is connected to the power supply lines of the vehicle's hazard warning lights and interior dome lights.

7. The vehicle smoke detection alarm device as described in claim 1, characterized in that, The vehicle-mounted host obtains alarm information through the TSN gateway; Alarm information includes: smoke concentration, temperature, and the time when the smoke concentration and temperature were collected.

8. The vehicle smoke detection alarm device as described in claim 1, characterized in that, The vehicle-mounted host is connected to the central control screen via a high-speed video signal bus; the vehicle-mounted host is connected to the speakers of the vehicle audio system via an audio power amplifier and corresponding audio output lines.

9. The vehicle smoke detection alarm device as described in claim 1, characterized in that, The T-box includes: The T-box main processor is electrically connected to the vehicle's Ethernet bus; The wireless communication module is connected to the T-box main processor via an internal data interface; The SIM card interface is electrically connected to the wireless communication module and is used to install the SIM card. An external antenna interface is electrically connected to the wireless communication module and is used to connect a communication antenna. The T-box main processor is configured to integrate alarm information and send it to the cloud server through the internal data interface and wireless communication module.

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