CN205563907U - Smog detects fire alarm sensing node based on zigBee - Google Patents

Abstract

The utility model discloses a smoke detection fire alarm sensing node based on ZigBee. The sensor acquisition node is connected with the monitoring terminal node through the ZigBee wireless communication node module. The monitoring terminal node includes a network coordinator, a TC35i module, a mobile terminal device, and a fire monitoring The network coordinator is connected to the TC35i module through the RS232 serial port, the network coordinator is connected to the fire monitoring center through the GPRS module, the TC35i module is connected to the mobile terminal equipment through the GSM network, and the temperature sensor module, smoke sensor module, The liquid crystal display, the alarm module and the switch are respectively connected with the CC2430 single-chip microcomputer, the switch is connected with the power supply battery, and the alarm module includes a buzzer and a positioning device. The utility model has the advantages of simple structure, long data transmission distance, stability and reliability, low power consumption and good expansibility , users can monitor the indoor situation in real time, reduce the probability of fire, and can be resolved in time when a fire occurs, reducing user losses.

Description

A ZigBee-based sensor node for smoke detection and fire alarm

technical field

The utility model relates to the technical field of fire alarm, in particular to a ZigBee-based smoke detection fire alarm sensing node.

Background technique

Fire will cause great harm to the life and property of the family, and it has attracted much attention. The smoke detection fire alarm system automatically detects fire hazards, and plays an extremely important role in safety guarantees in fire prevention and alarm. At present, security alarm systems are usually divided into two types: wired and wireless. The wired method has the characteristics of strong anti-interference and high reliability, but there are problems such as high cost, complicated wiring, and difficult networking; while the main advantages of using wireless methods such as RF and WiFi are flexible and convenient installation, no wiring, but transmission Short distance and poor stability. For home users or companies, when no one is there, they don't know when a fire breaks out, and most of them will not be discovered by people around them until the accident develops to a serious degree, which increases the danger.

Therefore, in order to overcome the deficiencies of the above-mentioned technologies, a ZigBee-based system with long data transmission distance, stable and reliable, low power consumption and good scalability is designed. Users can monitor the indoor situation in real time and can be solved in time when a fire occurs The smoke detection fire alarm sensing node is exactly the problem that the inventor will solve.

Utility model content

Aiming at the deficiencies of the prior art, the purpose of this utility model is to provide a smoke detection fire alarm sensor node based on ZigBee, which has simple structure, long data transmission distance, stable and reliable, low power consumption, good scalability, and users can real-time The indoor situation is monitored, and when a fire occurs, it can be resolved in time to reduce user losses.

The technical solution adopted by the utility model to solve the technical problems is: a ZigBee-based smoke detection fire alarm sensing node, which includes a sensor acquisition node and a monitoring terminal node, and the sensor acquisition node communicates with the monitoring node through a ZigBee wireless communication node module. Terminal node connection, the monitoring terminal node includes a network coordinator, TC35i module, mobile terminal equipment, fire monitoring center, the network coordinator is connected to the TC35i module through the RS232 serial port, and the network coordinator is connected to the fire monitoring center through the GPRS module connection, the TC35i module is connected with the mobile terminal equipment through the GSM network, the sensor collection node is provided with a temperature sensor module, a smoke sensor module, a CC2430 single-chip microcomputer, a liquid crystal display, an alarm module, a switch, a power supply battery, and the temperature sensor module , a smoke sensor module, a liquid crystal display, an alarm module, and a switch are respectively connected with the CC2430 single-chip microcomputer, the switch is connected with a power supply battery, and the alarm module includes a buzzer and a positioning device.

Further, the smoke sensor module is composed of MQ-2 smoke sensor and LM393 voltage comparator.

The beneficial effects of the utility model are:

1. The utility model takes the CC2530 single-chip microcomputer as the core, uses multiple sensors to collect and monitor environmental parameters in real time, and realizes alarms for abnormal conditions. The device structure is simple, and networking is convenient. Through the application of ZigBee wireless communication technology, the data transmission distance is long, Stable and reliable, low power consumption, combined with the advantages of RF, WiFi and other wireless methods and wired connection; through the application of TC35i module and GSM network, the information sent by the user through the system can realize real-time monitoring of indoor conditions, once a fire occurs, the first It will be known immediately, and the fire protection will be notified by the system, so that the fire can be resolved in time and the loss of users can be reduced.

Description of drawings

Fig. 1 is a block diagram of the overall structure of the utility model.

Fig. 2 is a structural block diagram of the sensor acquisition node of the present invention.

Description of reference signs: 1-sensor collection node; 2-ZigBee wireless communication node module; 3-network coordinator; 4-GPRS module; 5-fire monitoring center; 6-TC35i module; 7-GSM network; 8-mobile terminal Equipment; 11-temperature sensor module; 12-smoke sensor module; 13-liquid crystal display; 14-positioning device; 15-buzzer; 16-CC2430 microcontroller; 17-power supply battery; 18-switch.

detailed description

The utility model will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not intended to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

Referring to Fig. 1 is the overall structural block diagram of the present utility model, referring to Fig. 2 is the structural block diagram of the sensor collecting node of the present utility model, and this structure is a kind of smoke detection fire alarm sensing node based on ZigBee, comprises sensor collecting node 1 and monitoring terminal node, sensor The collection node 1 is connected to the monitoring terminal node through the ZigBee wireless communication node module 2. The monitoring terminal node includes the network coordinator 3, the TC35i module 6, the mobile terminal equipment 8, and the fire monitoring center 5. The network coordinator 3 communicates with the TC35i module 6 through the RS232 serial port Connection, the network coordinator 3 is connected with the fire monitoring center 5 through the GPRS module 4, the TC35i module 6 is connected with the mobile terminal equipment 8 through the GSM network 7, and the sensor collection node 1 is provided with a temperature sensor module 11, a smoke sensor module 12, and a CC2430 single-chip microcomputer 16. Liquid crystal display 13, alarm module, switch 18, power supply battery 17, temperature sensor module 11, smoke sensor module 12, liquid crystal display 13, alarm module, switch 18 are connected with CC2430 single-chip microcomputer 16 respectively, switch 18 is connected with power supply battery 17, The alarm module includes a buzzer 15 and a positioning device 14 .

Smoke sensor module 12 consists of MQ-2 smoke sensor and LM393 voltage comparator. The working voltage of the smoke sensor MQ-2 is 5V DC voltage, and the corresponding analog voltage is output according to the smoke concentration, and the range is between 0 and 5V. When there is no fire, compare the threshold voltage output by MQ-2 and output a binary digital signal. If it is greater than the threshold voltage, it means that there is a fire, and the LM393 outputs 0; otherwise, it means that there is no fire, and the LM393 outputs 1.

The utility model takes the CC2530 single-chip microcomputer 16 as the core, uses multiple sensors to collect and monitor environmental parameters in real time, and realizes alarms for abnormal conditions. The device structure is simple, and networking is convenient. Through the application of ZigBee wireless communication technology, the data transmission distance is long and stable. Reliable, low power consumption, combined with the advantages of RF, WiFi and other wireless methods and wired connection; the sensor acquisition node 1 is mainly used to detect whether there is flammable gas leakage or fire hazard in the room, and users can use 8 pairs of mobile terminal devices such as mobile phones The system performs remote monitoring operations. When the flammable gas content or smoke concentration exceeds the detection threshold, the node sends an alarm message to the system network coordinator 3, and the network coordinator 3 sends a short message to the system through the TC35i module 6 and the GSM network 7. The user sends out a fire alarm, which can monitor the indoor situation in real time, and at the same time send the information to the fire monitoring center 5 through the GPRS module 4, so that the user and the fire center can deal with it in time to avoid fires or reduce fire damage. The location of the alarm module The device 14 can quickly find the location of the alarm, reducing user losses.

Claims (2)

1. a smoke detection fire alarm sensing node based on ZigBee, it is characterized in that: it comprises sensor collection node and monitoring terminal node, described sensor collection node is connected with monitoring terminal node by ZigBee wireless communication node module, described monitoring terminal Nodes include network coordinator, TC35i module, mobile terminal equipment, and fire monitoring center. The network coordinator is connected to the TC35i module through the RS232 serial port. The network coordinator is connected to the fire monitoring center through the GPRS module. The TC35i module is connected to the fire monitoring center through the GSM The network is connected with the mobile terminal equipment, and the sensor collection node is provided with a temperature sensor module, a smoke sensor module, a CC2430 single-chip microcomputer, a liquid crystal display, an alarm module, a switch, a power supply battery, the temperature sensor module, the smoke sensor module, a liquid crystal display, The alarm module and the switch are respectively connected with the CC2430 single-chip microcomputer, the switch is connected with the power supply battery, and the alarm module includes a buzzer and a positioning device. 2. A kind of ZigBee-based smoke detection fire alarm sensor node according to claim 1, characterized in that: said smoke sensor module is made up of MQ-2 smoke sensor and LM393 voltage comparator.