阅读说明：本技术 一种智慧消防系统 (Wisdom fire extinguishing system ) 是由 江琼琴 宋文广 赵俊峰 王剑 王同喜 陈中举 胡杰 白凯 童浩 熊玉仙 熊智飞 于 2021-07-21 设计创作，主要内容包括：本发明申请属于消防建设技术领域,具体公开了一种智慧消防系统,包括智慧消防数据采集终端、智慧消防数据传输模块、物联网终端接入平台和物联网终端应用；智慧消防数据采集终端中多种类型环境监测传感器构成感知节点；采集到的数据通过NB-IoT模块向物联网终端接入平台中物联网平台传输,同时接收平台服务器下发的各种指令,通过串口发送给单片机,物联网终端接入平台在终端与服务器间进行信息传递,完成设备的接入、协议转换、数据实时分析和终端设备状态诊断,物联网终端接入平台再将数据转发到物联网终端应用中,实现数据可视化,并可以下发指令进行远程控制。一种智慧消防系统安全,稳定,成本低,解决了建筑物消防系统中信息孤岛的问题。(The invention belongs to the technical field of fire fighting construction, and particularly discloses an intelligent fire fighting system which comprises an intelligent fire fighting data acquisition terminal, an intelligent fire fighting data transmission module, an Internet of things terminal access platform and an Internet of things terminal application; multiple types of environment monitoring sensors in the intelligent fire-fighting data acquisition terminal form a sensing node; the acquired data are transmitted to an Internet of things platform in an Internet of things terminal access platform through an NB-IoT module, various instructions issued by a platform server are received, the instructions are sent to a single chip microcomputer through a serial port, the Internet of things terminal access platform conducts information transmission between a terminal and the server, access of equipment, protocol conversion, data real-time analysis and terminal equipment state diagnosis are completed, the Internet of things terminal access platform forwards the data to an Internet of things terminal application, data visualization is achieved, and the instructions can be issued for remote control. The utility model provides a wisdom fire extinguishing system safety, stable, with low costs, solved the problem of information isolated island among the building fire extinguishing system.)

1. An intelligent fire fighting system is characterized by comprising an intelligent fire fighting data acquisition terminal, an intelligent fire fighting data transmission module, an Internet of things terminal access platform and an Internet of things terminal application;

the intelligent fire-fighting data acquisition terminal is a sensing layer, is used for environmental monitoring and environmental parameter acquisition in the fire-fighting system, and simultaneously receives an instruction issued by the remote server;

the intelligent fire-fighting data transmission module is a network layer and is used for transmitting data acquired by the data acquisition terminal to the Internet of things terminal access platform and receiving various instructions of the Internet of things terminal access platform server;

the Internet of things terminal access platform is a platform layer and is used for taking charge of equipment access, protocol conversion, data real-time analysis and terminal equipment state diagnosis;

the terminal of the Internet of things is applied as an application layer and used for viewing environment monitoring data and issuing instructions for remote control, realizing data visualization and providing information for user decision making.

2. The intelligent fire fighting system according to claim 1, wherein the intelligent fire fighting data acquisition terminal comprises a sensing node, a microcontroller, a control unit and a digital circuit; the sensing node is used for monitoring various types of environments and collecting parameters, and comprises a temperature and humidity sensor, a combustible gas sensor, a flame sensor, a voltage sensor and a fire water monitoring sensor; the microcontroller is used for controlling data acquisition, receiving and issuing instructions; the control unit comprises a buzzer and a relay; the digital circuit comprises a power circuit, a USB-to-serial port circuit and an LED circuit.

3. The intelligent fire fighting system according to claim 1, wherein the intelligent fire fighting data transmission module comprises an NB-IoT communication module and an eMTC communication module, the NB-IoT communication module is a module that combines an NB-IoT protocol stack, a baseband chip, and an RF chip on a Voard printed circuit board and provides hardware pins and software interfaces to the outside, and is configured to transmit data acquired by the intelligent fire fighting data acquisition terminal to an internet of things terminal access platform and receive various instructions issued by the internet of things terminal access platform, and the eMTC communication module is configured to alarm and locate fire fighting.

4. The intelligent fire fighting system according to claim 1, wherein the internet of things terminal access platform comprises an internet of things cloud platform and an intelligent fire fighting monitoring server, and the internet of things platform is accessed to a data terminal device for management and control and information transmission between the terminal and the server.

5. The intelligent fire fighting system according to claim 1, wherein the terminal applications of the internet of things include a mobile phone terminal and a PC browser, which are mainly data information management platforms, and are used for viewing environment monitoring data and issuing commands.

Technical Field

The invention belongs to the technical field of fire fighting construction, and particularly discloses an intelligent fire fighting system.

Background

With the construction of smart cities and the emergence of emerging technologies such as internet of things, big data and cloud computing, the fire-fighting industry gradually carries out intelligent prevention from traditional passive fire. In recent years, with the acceleration of urban construction, the construction of high-rise buildings is gradually increased, but the basic force of social public fire protection is weak, the supervision objects are complex, and great pressure is brought to fire protection work. With the construction of smart cities, the fire-fighting industry gradually takes intelligent precaution from traditional passive fire-fighting by using emerging technologies such as internet of things, big data and cloud computing. In recent years, with the acceleration of urban construction footsteps, high-rise buildings are gradually increased, and in addition, the public fire-fighting basic strength of the society is weak, the supervision objects are numerous and complex, so that great pressure is brought to fire-fighting work, and the problems of preventing fire and ensuring fire-fighting safety become key and difficult problems in current urban management.

Present traditional fire extinguishing system and fire control monitored control system still have various problems, can be prominent comparatively obvious to different scenes, and various systems are the independent existence of dispersion moreover, and the data branch of sensor collection is put among the system of difference, lacks interconnection between the data and with historical data contrastive analysis, cause the information isolated island. Some supervisory equipment adopt the wired connection of field wiring mode mostly in traditional fire control, and the mode that compares in wireless connection through wired connection can expansibility and transplantable all relatively poor, and the complicated degree of difficulty of field wiring construction is great moreover, adopts some monitor points of wired connection mode to be difficult to monitor even. In traditional fire control data information collection, the sensor acquisition data information among the monitoring system is on the one hand, and on the other hand is then the manual work and inspects and record, causes data update untimely, data inconsistent scheduling problem.

Disclosure of Invention

The invention aims to provide an intelligent fire-fighting system to solve the problem of information isolated island in a building fire-fighting system.

In order to achieve the purpose, the technical scheme of the invention is as follows: an intelligent fire fighting system comprises an intelligent fire fighting data acquisition terminal, an intelligent fire fighting data transmission module, an Internet of things terminal access platform and an Internet of things terminal application;

the intelligent fire-fighting data acquisition terminal is a sensing layer, is used for environmental monitoring and environmental parameter acquisition in the fire-fighting system, and simultaneously receives an instruction issued by the remote server;

the intelligent fire-fighting data transmission module is a network layer and is used for transmitting data acquired by the data acquisition terminal to the Internet of things terminal access platform and receiving various instructions of the Internet of things terminal access platform server;

the Internet of things terminal access platform is a platform layer and is used for taking charge of equipment access, protocol conversion, data real-time analysis and terminal equipment state diagnosis;

the terminal of the Internet of things is applied as an application layer and used for viewing environment monitoring data and issuing instructions for remote control, realizing data visualization and providing information for user decision making.

The working principle of the technical scheme is as follows:

multiple types of environment monitoring sensors in the intelligent fire-fighting data acquisition terminal form sensing nodes, and a microcontroller is used as a control and data acquisition center to complete environment monitoring and environmental parameter acquisition; the acquired data are transmitted to an Internet of things platform in an Internet of things terminal access platform through an NB-IoT module, various instructions issued by a platform server are received and sent to a single chip microcomputer through a serial port, the single chip microcomputer makes corresponding control actions, the Internet of things terminal access platform conducts information transmission between a terminal and the server, access of equipment, protocol conversion, data real-time analysis and terminal equipment state diagnosis are completed, the Internet of things terminal access platform forwards the data to Internet of things terminal application, data visualization is achieved, information is provided for user decision making, and the instructions can be issued for remote control.

The beneficial effects of this technical scheme lie in:

(1) the utility model provides a wisdom fire extinguishing system, be equipped with unified comprehensive perception node, can realize the real-time automatic monitoring to the environment, include the monitoring to environment humiture, combustible gas monitoring, flame monitoring, voltage detection etc, early warning and automatic alarm can be realized simultaneously, when terminal node detects the environment abnormal conditions appearing, fire extinguishing system reports to the platform automatically, when the condition of a fire appears, automatic alarm immediately, inform relevant personnel to carry out the very first time and handle, also can carry out remote control through the platform, realize the benign management mechanism of in time discovering timely processing, the problem of information isolated island in the building fire extinguishing system has been solved.

(2) An intelligent fire fighting system can realize remote control, can check real-time data and historical data of a terminal on a platform, control equipment to be turned on and turned off, and set an equipment monitoring threshold value, so that the system has high controllability and runs reasonably; simultaneously an wisdom fire extinguishing system equipment low-power consumption, environmental detection need dispose a large amount of terminal equipment, adopts low-power consumption equipment to use the dry battery to supply power to can use for a long time.

Furthermore, the intelligent fire-fighting data acquisition terminal comprises a sensing node, a microcontroller, a control unit and a digital circuit; the sensing node is used for monitoring various types of environments and collecting parameters, and comprises a temperature and humidity sensor, a combustible gas sensor, a flame sensor, a voltage sensor and a fire water monitoring sensor; the microcontroller is used for controlling data acquisition, receiving and issuing instructions; the control unit comprises a buzzer and a relay; the digital circuit comprises a power circuit, a USB-to-serial port circuit and an LED circuit. The low-power consumption equipment can be used for supplying power by using a dry battery and can be used for a long time.

Furthermore, the intelligent fire-fighting data transmission module comprises an NB-IoT communication module and an eMTC communication module, wherein the NB-IoT communication module is a module which combines an NB-IoT protocol stack, a baseband chip and an RF chip on a Voard Printed Circuit Board (PCB) and provides hardware pins and a software interface to the outside, is used for transmitting data acquired by the intelligent fire-fighting data acquisition terminal to the Internet of things terminal access platform and receiving various instructions issued by the Internet of things terminal access platform, and the eMTC communication module is used for fire-fighting alarm and positioning.

Further, the Internet of things terminal access platform comprises an Internet of things cloud platform and an intelligent fire monitoring server, the Internet of things platform is accessed into the data terminal equipment for management and control, and information is transmitted between the terminal and the server.

Further, the terminal application of the internet of things comprises a mobile phone terminal and a PC browser, and the terminal application is mainly a data information management platform and used for checking environment monitoring data and issuing instructions.

Drawings

FIG. 1 is a general architecture diagram of an intelligent fire fighting system according to the present invention;

FIG. 2 is a block diagram of a data acquisition terminal of the intelligent fire fighting system of the present invention;

FIG. 3 is a pin layout diagram of an STM32L431RCT6 chip LQFP64 package in an embodiment of the invention;

FIG. 4 is a minimal system diagram of an STM32L431RCT6 chip in an embodiment of the invention;

FIG. 5 is a power conversion circuit diagram of STM32L431RCT6 in an embodiment of the present invention;

FIG. 6 is a circuit diagram of a USB to USART serial port according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of an LED lamp circuit in an embodiment of the present invention;

FIG. 8 is a schematic diagram of a DTH11 temperature and humidity sensor circuit in an embodiment of the present invention;

FIG. 9 is a schematic diagram of an MQ-7 combustible gas detection sensor in an embodiment of the invention;

FIG. 10 is a circuit diagram of the LM393 flame detection sensor voltage comparator in accordance with an embodiment of the invention;

FIG. 11 is a block diagram of an LT-163 single-phase mutual inductance type voltage acquisition module in an embodiment of the present invention;

FIG. 12 is a functional block diagram of BC35-G in an embodiment of the present invention;

FIG. 13 is a schematic diagram of a BC35-G module in accordance with an embodiment of the present invention;

FIG. 14 is a schematic diagram of a BC35-G circuit in an embodiment of the invention;

FIG. 15 is a schematic diagram of a buzzer in an embodiment of the present invention;

fig. 16 is a schematic diagram of a relay in an embodiment of the invention.

Detailed Description

The following is further detailed by way of specific embodiments:

the embodiment is basically as shown in the attached figures 1 to 16, and the intelligent fire fighting system comprises an intelligent fire fighting data acquisition terminal, an intelligent fire fighting data transmission module, an internet of things terminal access platform and an internet of things terminal application;

the intelligent fire-fighting data acquisition terminal is used for environmental monitoring and environmental parameter acquisition in the fire-fighting system and receiving an instruction issued by the remote server; the intelligent fire-fighting data transmission module is used for transmitting the data acquired by the data acquisition terminal to the Internet of things terminal access platform and receiving various instructions of the law of the Internet of things terminal access platform server; the Internet of things terminal access platform is used for equipment access, protocol conversion, data real-time analysis and terminal equipment state diagnosis; the Internet of things terminal application is used for viewing environment monitoring data and issuing instructions for remote control, realizing data visualization and providing information for user decision making.

The specific implementation process is as follows:

referring to fig. 1, in the intelligent fire-fighting data acquisition terminal, a sensing node is formed by various environment monitoring sensors for temperature and humidity monitoring, combustible gas monitoring, voltage monitoring, flame monitoring and fire-fighting water monitoring, a microcontroller is used as a control and data acquisition center, and a buzzer and a relay of a control unit are responsible for environment monitoring and environmental parameter acquisition in a fire-fighting system and simultaneously receive an instruction sent by a remote server to control the control unit; in the intelligent fire-fighting data transmission module, an NB-IoT communication module and an eMTC communication module communicate with an OceanConnect Internet of things platform through a COAP protocol, data collected in an intelligent fire-fighting data collection terminal is transmitted to the Internet of things platform in an Internet of things terminal access platform through the NB-IoT module, various instructions sent by a platform server are received and sent to a single chip microcomputer through a serial port, the single chip microcomputer makes corresponding control actions, the eMTC communication module completes fire-fighting alarm and rapidly positions the positions by combining fire-fighting equipment, a fire-fighting indicator board and a fire-fighting alarm button, and fire-fighting command and evacuation are completed through VoLTE communication; the Internet of things terminal access platform is accessed to the data terminal equipment for management and control, the Internet of things platform performs information transmission between the terminal and the server to complete equipment access, protocol conversion, data real-time analysis and terminal equipment state diagnosis, the data terminal sends data to the Internet of things platform, and the Internet of things platform forwards the data to the application server; the terminal application of the internet of things is used as a data information management platform, data visualization is achieved, information is provided for user decision making, and managers can check environment monitoring data through mobile phones or PC terminals and can issue commands to conduct remote control.

In the embodiment, a microcontroller in the intelligent fire-fighting data acquisition terminal is an STM32L431RCT6(STMicroelectronics), a main control of the STM32L431RCT6 is a high-performance ultra-low-power microcontroller based on an ARM Cortex-M432-bit RISC kernel, the highest main frequency can reach 80MHz, a floating point arithmetic unit (FPU) is provided to support single-floating-point data processing instruction and data type processing, a complete set of DSP instruction and a storage protection unit (MPU) are realized, and therefore the safety of an application program is enhanced. STM32L431RCT6 supports ultra-low power consumption, has three low-power consumption modes of sleep, shut down and standby, a low-power consumption RTC, a general 32-bit timer, a 16-bit PWM timer specially used for motor control, four general 16-bit timers and two 16-bit low-power consumption timers, the working voltage range is 1.71V-3.6V, a high-speed 12-bit ADC 5Msps is provided, the number of the output channels is up to 16, 2 12-bit DAC, and low-power sampling and holding are realized. The 16 communication interfaces comprise 1 SAI serial audio interface, 3I 2C buses, 4 USARTs, 1 LPUART serial interface, 3 SPI serial bus interfaces, CAN and SDMMC interfaces and the like. The intelligent fire fighting system adopts an STM32L431RCT6 chip as an LQFP64 package, the pin layout and the minimum principle are shown in fig. 3 and 4, a main control chip is embedded with a high-speed memory, a memory with the height of 256Kb and an SRAM with the height of 64Kb, the LQFP64 package has 83I/O, a Quad SPI memory interface, an enhanced extensible I/O and peripherals can be connected to a chain APB bus, two AHB buses and a 32-bit AHB bus matrix.

In the embodiment, the input power supply voltage of the intelligent fire-fighting data acquisition terminal is 5V, the working voltage of the main controller STM32L431RCT6 is 1.71-3.6V, in the voltage conversion process, the 5V voltage needs to be converted into 3.3V voltage, and the schematic diagram of the power supply conversion circuit is shown in FIG. 5.

In the embodiment, a CH340G chip is used in the circuit design of the intelligent fire fighting system to convert the USB into a USART serial port, as shown in fig. 6, the communication between a computer and a data acquisition terminal can be used for serial port output and printing information in an MCU, and ISP downloading and test debugging can also be realized. The TXD pin of the CH340G is connected with the serial port RX pin, the RXD pin is connected with the serial port TX pin, the working voltage of the CH340G is 3.3V or 5V, and the simplex mode, the half-duplex mode or the full-duplex mode can be used for the MCU serial port to carry out communication.

In the embodiment, an LED lamp is used as a status indicator in the circuit design of the intelligent fire fighting system, as shown in FIG. 7, sys is a system power indicator, an LED0 is an indicator in a BC35-G status, an LED1 is an indicator in a BC35-G function, three LEDs are common in an anode, the system indicator automatically lights up when the cathode of the power indicator is directly connected with the ground and powered on, the indicator in the BC35-G status indicates whether the NB-IoT module searches for a network, and the indicator in the BC35-G function indicates whether the NB-IoT module normally transmits and receives data.

In an embodiment, an intelligent fire protection system selects a DHT11 chip to collect the temperature and humidity of the intelligent fire protection system, as shown in fig. 8. The DHT11 chip precision is as follows: humidity + -5% RH, temperature + -2 deg.C, humidity range 20-90% RH, temperature-40-80 deg.C. The DHT11 digital humidity temperature sensor uses a single bus data format, i.e., one data pin port completes both input and output transmissions. A data packet consists of 5 bytes (40 bits) and the data is divided into a fractional part and a whole part. The complete data transfer is 40 bits with the highest order being the first bit. The output of the sensor data is unencoded binary data. The data (humidity, temperature, integer, decimal) must be processed separately. The data format of the DHT11 is very simple. The communication between the DHT11 and the MCU is about 3ms at the maximum, and the host's continuous read interval should be no less than 100 ms. The I/O port of the STM32 microcontroller was connected to the DHT11 DATA pin and a pull-up resistor was connected to the DATA pin to communicate between the microcontroller and the temperature and humidity sensors.

In the embodiment, a smoke sensor MQ-7 is selected as a combustible gas detection sensor of an intelligent fire fighting system, and as shown in fig. 9, the sensor is widely used for leakage alarm of household gas, industrial gas and portable fire detectors. It has high sensitivity to liquefied gas, methane, propane, butane and flue gas, and is matched with gas leakage detection and flue gas detection. The gas sensitive material used in MQ-7 gas sensors is tin dioxide (SnO)₂) And low conductivity in clean air. When combustible gas is present in the environment in which the sensor is located, the conductivity of the sensor increases with the concentration of combustible gas in the air, including using a simple circuit to convert the change in conductivity into an output signal corresponding to the gas concentration.

In the embodiment, the flame detection sensor of the intelligent fire fighting system adopts a wide voltage LM393 voltage comparator, as shown in FIG. 10, is used for detecting various fire sources and can detect flames or light sources with the wavelength ranging from 760nm to 1100nm, the flame detection distance is 80 centimeters, and the larger the flame is, the larger the detection distance is. The detection angle is about 60 degrees, and the detection device is particularly sensitive to flame spectrum. The working voltage is 3.3V-5V, the output of the comparator has good waveform, and the signal is clean and is larger than 15 mA.

In the embodiment, a voltage detection sensor of an intelligent fire fighting system adopts an LT-163 single-phase mutual inductance type metering module, as shown in FIG. 11, can accurately measure electrical parameters such as single-phase alternating-current voltage, current, power factor, frequency and electric quantity, has high isolation voltage, is provided with 1-path TTL communication interface, and can communicate with an MCU. The voltage range is 60V-380V, the current range is 5A-100A, and the voltage, current and electric quantity of the measurement precision are less than +/-1.0%.

In the embodiment, an NB-IoT communication module in an Internet of things terminal access platform adopts a remote BC35-G series communication module. The BC35-G communication module has the characteristics of high performance and low power consumption, has a built-in rich network service protocol stack, and supports a plurality of B1/B3/B5/B8/B20/B28 frequency bands, and each frequency band corresponds to a frequency range. A block diagram of BC35-G is shown in FIG. 12. The BC35-G module has a total of 94 pins, of which 54 are LCC pins and the other 40 are LGA pins. Fig. 13 shows the pin and interface design for all modules, module interface function: the device comprises a power supply, a serial port, a USIM interface, an analog-to-digital conversion interface, an RI signal and a network status indicator lamp interface.

In the embodiment, the BC35-G communicates with the MCU through a serial port, the default baud rate is 9600bps, and the BC35-G has the circuit principle as shown in FIG. 14, wherein the main serial port of the BC35-G is connected with the serial port 3 of the MCU controller, the NB _ TX pin is connected with the UART3_ RX, and the NB _ RX pin is connected with the UART3_ TX. The VDD _ EXT pin can output 3.0V power to control the state of the LED lamp. When NETLIGHT is in high level, the module registers to the network; at low level the module is not running or registered with the network.

In the embodiment, an active buzzer is used as a local fire alarm device, a buzzer circuit schematic diagram is shown in fig. 15, and the MCU controls the BUZ pin through a GPIO to be communicated with a PNP triode. When the BUZ pin is at a low level, the PNP triode is conducted, the buzzer sounds, and when the BUZ pin is at a high level, the PNP triode is cut off, and the buzzer stops.

In the embodiment, a terminal control unit relay is designed in the intelligent fire fighting system, as shown in fig. 16. When the data acquisition terminal detects that the condition of a fire takes place, open the water spray setting through the relay switch, carry out the very first time and handle, realize early discovery, early goal of handling. The relay is divided into two ends, the circuits at the two ends are isolated, one end is connected into the circuit and is high in current and high in voltage, and the other end is connected with the main controller and is used for controlling low current and low voltage. The working principle of the relay controls the opening and closing of the contacts when the input quantity changes. When the specified requirements are met, a predetermined step change occurs in the output circuit, which is actually an automatic switch that controls a large current with a small current.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.