NB-iot Internet of Things Wireless Smoke Sensor Smoke Alarm Design

To introduce the design of NB-IoT Internet of Things Wireless Smoke Sensor Smoke Alarm in detail, we need to elaborate on its system architecture, hardware design, software design, functional characteristics, application scenarios and other aspects.

IoT System Smoke Alarm Equipment

System Architecture

The NB-IoT Internet of Things Wireless Smoke Sensor Smoke Alarm System is mainly composed of the following parts:

1. Smart Smoke Sensor Terminal: This is the core part of the entire system, responsible for monitoring smoke concentration and triggering alarms. The terminal integrates key components such as smoke sensors, microcontrollers (MCUs), and NB-IoT communication modules.
2. Transmission Network: NB-IoT technology is used to achieve wireless communication between the terminal and the cloud platform. NB-IoT has the characteristics of large connection, low power consumption, low cost, and wide coverage, which is very suitable for Internet of Things applications.
3. Smart Fire Cloud Platform: Used to receive, process and analyze alarm information from the terminal. The cloud platform has functions such as data storage, intelligent analysis, and remote monitoring, and can push alarm information to relevant personnel through various channels (such as APP, SMS, WeChat public accounts, etc.).
4. Application system: Various applications developed based on the cloud platform, such as fire warning system, equipment management system, etc., are used to improve the intelligent level of fire management.

Hardware design

1. Power supply design: Usually powered by batteries to ensure normal operation in the event of power outages. The battery life can generally reach several years, depending on the frequency of use and power consumption of the device.
2. Smoke detection circuit: Photoelectric or ion smoke sensors are used to monitor smoke concentration. Photoelectric sensors are more sensitive to slightly larger smoke particles, while ion sensors are more sensitive to tiny smoke ions. When designing, the appropriate sensor type should be selected according to actual needs.
3. NB-IoT communication circuit: Responsible for transmitting alarm information to the cloud platform through the NB-IoT network. The communication circuit needs to be well matched and debugged with the NB-IoT module to ensure the stability and reliability of communication.
4. Other circuits: Such as LED indicator circuit, key detection circuit, buzzer control circuit, etc., used to provide user interaction and alarm prompt functions.

Software Design

1. Embedded Software: Running on MCU, responsible for collecting smoke sensor data, processing alarm logic, controlling NB-IoT communication module, etc. The software must have low power design, real-time processing and other characteristics.
2. Cloud Platform Software: Running on the smart fire cloud platform, responsible for receiving, storing, analyzing alarm information, and pushing it to relevant personnel through various channels. Cloud platform software must have high concurrent processing capabilities, data security and other functions.
3. Mobile Application Software: Such as APP, WeChat public account, etc., for users to remotely monitor device status, receive alarm information, etc. Mobile application software must have good user experience and ease of use.

Functional Features

1. Real-time monitoring: Able to monitor smoke concentration 24 hours a day, and immediately trigger an alarm once an abnormality is found.
2. Remote Alarm: Alarm information is transmitted to the cloud platform in real time through the NB-IoT network, and pushed to relevant personnel through various channels to realize remote alarm function.
3. Low power design: Low power hardware and software design is adopted to ensure that the device does not need to replace the battery for a long time.
4. Easy to install: The wireless design makes the device installation more convenient, and the networking function can be realized without wiring.
5. Intelligent management: Remotely manage, monitor and maintain the device through the cloud platform to improve the intelligent level of fire management.

Application scenario

NB-IoT Internet of Things wireless smoke sensor smoke alarm can be widely used in various places, such as residences, shops, rental houses, farmers’ houses, factories, warehouses, computer rooms, etc. Especially in places with serious environmental aging, dense and complex flow of people, and old and messy lines, installing such equipment can effectively improve fire prevention capabilities.

Design example

Take a certain NB-IoT Internet of Things wireless smoke sensor smoke alarm as an example. Its design uses the HT45F23A chip of Hetai Technology as the core component of the smoke detection circuit. The chip has the characteristics of ultra-low power consumption, built-in OPA and fast ADC, which is very suitable for the design of smoke detectors. At the same time, the device also integrates the NB-IoT communication module and battery power supply system to realize wireless networking and long standby functions.

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