CN204406602U - A kind of dormitory fire-proof and theft-proof system based on msp430 - Google Patents

Abstract

The utility model relates to a dormitory fire prevention and anti-theft system based on msp430, comprising a controller module, a detection module, a keyboard input module, a display module, a data communication module, an A/D conversion module and a clock module; the detection module includes a human body detection module , a smoke detection module and an acousto-optic alarm module; the controller module includes a monitoring host and a monitoring slave, and the monitoring slave collects the combustible gas, fire source and personnel entry in the dormitory through the detection module, and passes through the wireless network After transmission to the monitoring host, the display module displays the security situation of the monitoring slave, and gives an audible and visual alarm in a timely manner. The utility model is reasonable in design, strong in operability, strong in practicability, and has great popularization and application value.

Description

A dormitory fire prevention and anti-theft system based on msp430

technical field

The utility model relates to the technical field of intelligent management, in particular to an msp430-based dormitory fire prevention and anti-theft system.

Background technique

In recent years, anti-theft and fire prevention safety monitoring devices have become widely used equipment in banks, shops, offices, residential areas, warehouses, etc., and have played an important role in maintaining social order, ensuring national property and the safety of the masses. However, due to economic and technical reasons, the current monitoring system generally has a high false alarm rate of detectors and unreasonable system design.

With the improvement of school hardware facilities, in order to facilitate students' life and study, more and more modern electrical equipment is used in student dormitories, and high-tech electronic products such as mobile phones and computers are also used more and more widely in schools. While student life brings convenience, there are also some potential safety hazards. However, the upper part of the dormitory management system is complete. How to manage these devices scientifically and efficiently, solve the fire prevention and anti-theft problems of college dormitories, and prevent safety accidents. question.

At present, domestic anti-theft and fire alarm products are mainly based on infrared technology. Infrared through-beam detectors have the characteristics of mature technology, low cost, unaffected by ambient light, good wind resistance, and good vibration resistance. It can also maintain good performance under climatic conditions such as snow and snow. However, its equipment is prone to aging, its service life is short, its false alarm rate is high, and it cannot prevent curve perimeters.

Utility model content

The utility model aims at the above-mentioned technical defects, and devotes itself to providing a dormitory fire prevention and anti-theft system based on msp430.

A dormitory fire prevention and anti-theft system based on msp430, including a controller module, a detection module, a keyboard input module, a display module, a data communication module, an A/D conversion module and a clock module. The detection module includes a human body detection module, a smoke detection module and an audible and visual alarm module.

The controller module includes a host and a slave. The slave collects the combustible gas, fire source and personnel entry in the dormitory through the detection module, and transmits them to the host through a wireless network. The display module displays the security of the slave. situation, and timely audible and visual alarms. The wireless network uses NRFCC1100 for data transmission.

Preferably, the controller module adopts msp430 series single-chip microcomputer as the microcontroller of the dormitory fire prevention and anti-theft system.

Preferably, the human body detection module adopts a pyroelectric sensor. The pyroelectric sensor can detect the infrared rays emitted by the human body due to the body temperature, and can convert the heat signal into an electrical signal. Coupled with a simple peripheral circuit, it will generate a digital signal compatible with the microcontroller.

Preferably, the smoke detection module is used to detect combustible gases in the air. When a fire occurs in the room, a large amount of CO gas will be generated due to incomplete combustion of the articles. The smoke detection module judges whether there is a fire in the room by detecting the content of the combustible gas.

Preferably, the audible and visual alarm module includes a buzzer and a light emitting diode, both of which together constitute an audible and visual alarm circuit.

Preferably, the keyboard input module adopts a 4*4 matrix keyboard manually welded with 16 small keys. Its welding is simple and easy to operate.

Preferably, the display module adopts an LCD display with a font library. Its interface circuit is simple, it can be directly connected with the single-chip microcomputer, and serial transmission can be adopted, which saves I/O port resources. The full Chinese interface display of LCD makes the display content rich and easy for man-machine communication.

Preferably, the data communication module adopts NRFCC1100 radio frequency transceiver. The NRFCC1100 RF transceiver works in the 433/868/915MHz ISM band and consists of a fully integrated frequency modulator, a receiver with demodulator, a power amplifier, a crystal oscillator and a regulator. NRFCC1100 can automatically generate preamble and CRC, can be easily programmed and configured through SPI interface, and has low power consumption. And it has functions such as wireless wake-up, the sensitivity reaches -110bBm, and the reliability is strong.

Preferably, the A/D conversion module adopts the built-in A/D converter of the msp430 single-chip microcomputer. The A/D converter is an 8-way 10-bit high-speed A/D converter with a speed up to 25KHz. It can be used for temperature detection, voltage battery detection, key scanning, spectrum detection, etc. Any one of the 8 channels can be set as A/D conversion through software, and the ports that are not used as A/D conversion can continue to be used as I/O ports.

Preferably, the clock module adopts DS1302 clock chip. The DS1302 chip is small in size, operates on a serial port, and occupies less I/O port resources. It can be implemented without power loss by adding a spare button battery. It is cheap and easy to implement.

When the pyroelectric sensor detects that someone has entered the dormitory, the buzzer will issue a prompt, and the LED indicator light will flash, requiring the person entering the dormitory to enter the password; The monitoring system will automatically send out an alarm signal. When the host receives the signal, it will control the voice alarm module to alarm and the LED indicator light will flash to remind someone to enter the dormitory. Please pay attention to anti-theft. If the password is entered correctly, the anti-theft system will be disarmed, and at the same time, the password modification interface will be entered, and the new password can be set by entering the new password twice through the keyboard. In other cases, when the slave machine detects a fire source or flammable gas, the slave machine will send an alarm signal to the host machine, and the host machine will control the corresponding playback address and control the voice module voice alarm.

The dormitory fire prevention and anti-theft system of the present utility model takes the msp430 single-chip microcomputer as the main control core, and the monitoring slave machine collects the combustible gas, fire source and personnel entering the dormitory through the detection module, and transmits them to the monitoring host through the wireless network, and displays The module displays and monitors the security situation of the slave machine, and gives sound and light alarm in time. This system is novel in design, strong in operability, can effectively solve the problem of fire prevention and anti-theft in dormitories, and has great promotion and application value.

Description of drawings

Fig. 1 is the schematic diagram of the system control of the utility model.

Detailed ways

The technical solution of the utility model will be further described below according to the specific embodiments.

As shown in Figure 1, a dormitory fire prevention and anti-theft system based on msp430 includes a controller module, a detection module, a keyboard input module, a display module, a data communication module, an A/D conversion module and a clock module. The detection module includes a human body detection module, a smoke detection module and an audible and visual alarm module.

The controller module includes a host and a slave. The slave collects the combustible gas, fire source and personnel entry in the dormitory through the detection module, and transmits them to the host through a wireless network. The display module displays the security of the slave. situation, and timely audible and visual alarms. The wireless network uses NRFCC1100 for data transmission.

Preferably, the controller module adopts msp430 series single-chip microcomputer as the microcontroller of the dormitory fire prevention and anti-theft system.

Preferably, the human body detection module adopts a pyroelectric sensor. The pyroelectric sensor can detect the infrared rays emitted by the human body due to the body temperature, and can convert the heat signal into an electrical signal. Coupled with a simple peripheral circuit, it will generate a digital signal compatible with the microcontroller.

Preferably, the smoke detection module is used to detect combustible gases in the air. When a fire occurs in the room, a large amount of CO gas will be generated due to incomplete combustion of the articles. The smoke detection module judges whether there is a fire in the room by detecting the content of the combustible gas.

Preferably, the audible and visual alarm module includes a buzzer and a light emitting diode, both of which together constitute an audible and visual alarm circuit.

Preferably, the keyboard input module adopts a 4*4 matrix keyboard manually welded with 16 small keys. Its welding is simple and easy to operate.

Preferably, the display module adopts an LCD display with a font library. Its interface circuit is simple, it can be directly connected with the single-chip microcomputer, and serial transmission can be adopted, which saves I/O port resources. The full Chinese interface display of LCD makes the display content rich and easy for man-machine communication.

Preferably, the data communication module adopts NRFCC1100 radio frequency transceiver. The NRFCC1100 RF transceiver works in the 433/868/915MHz ISM band and consists of a fully integrated frequency modulator, a receiver with demodulator, a power amplifier, a crystal oscillator and a regulator. NRFCC1100 can automatically generate preamble and CRC, can be easily programmed and configured through SPI interface, and has low power consumption. And it has functions such as wireless wake-up, the sensitivity reaches -110bBm, and the reliability is strong.

Preferably, the A/D conversion module adopts the built-in A/D converter of the msp430 single-chip microcomputer. The A/D converter is an 8-way 10-bit high-speed A/D converter with a speed up to 25KHz. It can be used for temperature detection, voltage battery detection, key scanning, spectrum detection, etc. Any one of the 8 channels can be set as A/D conversion through software, and the ports that are not used as A/D conversion can continue to be used as I/O ports.

Preferably, the clock module adopts DS1302 clock chip. The DS1302 chip is small in size, operates on a serial port, and occupies less I/O port resources. It can be implemented without power loss by adding a spare button battery. It is cheap and easy to implement.

When the pyroelectric sensor detects that someone has entered the dormitory, the buzzer will issue a prompt, and the LED indicator light will flash, requiring the person entering the dormitory to enter the password; The monitoring system will automatically send out an alarm signal. When the host receives the signal, it will control the voice alarm module to alarm and the LED indicator light will flash to remind someone to enter the dormitory. Please pay attention to anti-theft. If the password is entered correctly, the anti-theft system will be disarmed, and at the same time, the password modification interface will be entered, and the new password can be set by entering the new password twice through the keyboard. In other cases, when the slave machine detects a fire source or flammable gas, the slave machine will send an alarm signal to the host machine, and the host machine will control the corresponding playback address and control the voice module voice alarm.

Claims (9)

1. a dormitory fire prevention and anti-theft system based on msp430, is characterized in that: comprise controller module, detection module, keyboard input module, display module, data communication module, A/D conversion module and clock module; Described detection module comprises human body Detection module, smoke detection module and sound and light alarm module; the controller module includes a host and a slave, and the slave collects the combustible gas, fire source and personnel entry in the dormitory through the detection module, and transmits the information through the wireless network For the host, the display module displays the security situation of the slave, and gives an audible and visual alarm in due course. 2. A kind of dormitory fire prevention and anti-theft system based on msp430 according to claim 1, it is characterized in that: described controller module adopts msp430 series single-chip microcomputer as the microcontroller of this dormitory fire prevention and anti-theft system. 3. A dormitory fire prevention and anti-theft system based on msp430 according to claim 1, characterized in that: said human body detection module adopts a pyroelectric sensor. 4. A dormitory fire prevention and anti-theft system based on msp430 according to claim 1, characterized in that: the sound and light alarm module includes a buzzer and a light emitting diode, both of which together constitute a sound and light alarm circuit. 5. A dormitory fire prevention and anti-theft system based on msp430 according to claim 1, characterized in that: said keyboard input module uses 16 small keys to manually weld a 4*4 matrix keyboard. 6. A dormitory fire prevention and anti-theft system based on msp430 according to claim 1, characterized in that: said display module adopts LCD display with font library. 7. A dormitory fire prevention and anti-theft system based on msp430 according to claim 1, characterized in that: said data communication module adopts NRFCC1100 radio frequency transceiver. 8. A dormitory fire prevention and anti-theft system based on msp430 according to claim 1, characterized in that: the A/D conversion module adopts the A/D converter inside the msp430 single chip microcomputer. 9. A dormitory fire prevention and anti-theft system based on msp430 according to claim 1, characterized in that: said clock module adopts DS1302 clock chip.