CN102698382B - Fire disaster intelligent escaping system based on zigbee technology - Google Patents

Abstract

The fire intelligent escape system based on zigbee technology of the present invention relates to the field of fire escape, and the system includes a remote management subsystem, a zigbee wireless positioning subsystem and an escape direction indicating subsystem; The escape direction indicating subsystem plans the escape route, and irradiates the ground in the form of laser projection, and escapers can evacuate according to the laser projection mark. The beneficial effect of the present invention is: the system has mobility and flexibility, through the zigbee wireless positioning technology, the escape direction of the fire scene is projected onto the ground through the laser projector of the gas mask, and the survivors can clearly observe their own escape direction at any time , Rescuers can also know the distribution of personnel at the fire scene through the wireless base station, and carry out rescue work in a timely and effective manner.

Description

Fire intelligent escape system based on zigbee technology

technical field

The invention relates to the field of fire escape, in particular to a fire intelligent escape system based on zigbee technology.

Background technique

With the rapid development of society, the number of large-scale commercial, office, entertainment, and residential buildings is increasing day by day. The potential safety hazards brought about by the accident have also continued to increase, and the number of casualties and property losses has been shocking. At present, most of the safety and fire protection equipment and measures are focused on prevention, and the escape of personnel at the fire scene is still in the self-help stage, and there is basically no relevant auxiliary escape equipment. The existing escape signs are difficult to distinguish at the fire scene, and the fire scene is complicated, and the fixed escape signs cannot play a timely and effective prompting role.

Zigbee technology is a short-distance, low-complexity, low-power, low-speed, low-cost two-way wireless communication technology, mainly used for data transfer between various electronic devices with short distance, low power consumption and low transmission rate Transmission and typical applications with cyclic data, intermittent data and low latency data transmission.

The green laser is very eye-catching at the fire scene, and can be easily observed even at the fire scene with a large smoke density. The green laser projector has the advantages of small size, low power consumption, long irradiation distance without scattering, and easy observation in red fire and dense smoke, etc. It is very suitable as an escape sign at the fire scene.

As an inertial measurement device, a gyroscope is an integral part of inertial navigation, inertial guidance and inertial measurement systems, and is widely used in military and civilian fields.

Contents of the invention

In order to solve the technical problem that there is no related fire auxiliary escape equipment in the prior art and the existing fixed escape signs cannot play a timely and effective prompting role, the present invention provides a fire intelligent escape system based on zigbee technology, which has the characteristics of maneuverability and flexibility. Survivors can clearly observe their escape direction at any time, and rescuers can also learn about the distribution of personnel at the fire scene through wireless base stations, and carry out rescue work in a timely and effective manner.

The technical solution adopted by the present invention to solve the technical problems is as follows:

The fire intelligent escape system based on zigbee technology includes a remote management subsystem, a zigbee wireless positioning subsystem and an escape direction indication subsystem; The remote management subsystem and the escape direction indicating subsystem perform wireless communication, and the zigbee wireless positioning subsystem is used to locate the personnel information at the fire scene, and plan the escape routes for the escapees according to the fire scene conditions. At the same time, the zigbee wireless positioning subsystem The personnel information on the scene is sent to the remote management subsystem, and the escape route is sent to the escape direction indication subsystem; the remote management subsystem plans a rescue plan according to the received personnel information at the fire scene, and conducts remote rescue command; The escape direction indicating subsystem is installed at the front end of the mouth of the smoke-proof mask worn by the escapee, which can lock the received escape route and guide the escapee to escape.

The above-mentioned remote management subsystem includes a base station and a computer. The base station communicates with the computer through a wireless network. The base station is placed near the fire scene. The base station communicates wirelessly with the zigbee wireless positioning subsystem, which sends the zigbee wireless positioning subsystem The fire scene personnel information is sent to the computer for display.

The above-mentioned zigbee wireless positioning subsystem includes temperature and smoke sensor module, zigbee wireless positioning module, zigbee central base station module and battery automatic charging module; The modules are connected, and it can provide power for the above-mentioned modules for at least 100 hours in the case of power failure; the temperature and smoke sensor module is connected with the zigbee wireless positioning module, which is used to collect the temperature parameters and smoke parameters of the fire scene in real time, and The collected parameters are sent to the zigbee wireless positioning module; the zigbee wireless positioning module is wirelessly connected with the zigbee central base station module, which is used to locate the personnel information at the fire scene, and transmits the personnel positioning information and temperature and smoke sensor module The information is transmitted to the zigbee central base station module; the zigbee central base station module is used to send the received personnel positioning information and temperature and smoke parameter information to the base station.

The above-mentioned escape direction indication subsystem includes a zigbee wireless receiving module, an MSP430 central processing unit, a gyroscope module, a 2-degree-of-freedom motor stand, a laser projector and a power supply module; , gyroscope module, 2-DOF motor stand, and laser projector are connected, and provide electric energy for the above-mentioned modules; the zigbee wireless receiving module is connected with the MSP430 central processing unit, and it is used to receive the personnel sent by the zigbee wireless positioning subsystem positioning information, and carry out the direction sign to the position of the personnel, and transmit the direction of the sign to the MSP430 CPU; The angle of the locked direction is sent to the gyroscope module; the gyroscope module is connected with the 2-degree-of-freedom motor stand, which is used to control the change angle of the 2-degree-of-freedom motor stand according to the received angle information, so that the 2-degree-of-freedom motor stand The locking direction is always kept unchanged; the laser projector is fixed on the 2-degree-of-freedom motor stand, and it projects the escape direction onto the ground in the form of a green laser icon to guide the escapees to escape.

The beneficial effects of the present invention are as follows:

1) Compared with the traditional fixed escape signs, the present invention has mobility and flexibility. Survivors can observe their own escape direction at any time, and rescuers can also know the distribution of personnel at the fire scene through wireless base stations, and carry out rescue work in a timely and effective manner. .

2) The present invention adopts ADXRS gyroscope chip, which is only 7mm*3mm in size, adopts BGA-32 packaging technology, consumes 30mW of power, weighs only 0.5g, and can well overcome the shortcomings of traditional gyroscopes.

3) The present invention uses zigbee wireless positioning technology to project the escape direction of the fire scene onto the ground through the laser projector on the gas mask, so that escapers can clearly see the escape direction and get rescued in time.

Description of drawings

Fig. 1 is a functional block diagram of a fire intelligent escape system based on zigbee technology in the present invention.

Fig. 2 is a structural block diagram of the zigbee wireless positioning subsystem in the present invention.

Fig. 3 is a structural block diagram of the escape direction indicating subsystem in the present invention.

Fig. 4 is a schematic diagram of distribution of zigbee wireless positioning subsystems on a floor according to an embodiment of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, the fire intelligent escape system based on zigbee technology of the present invention includes a zigbee wireless positioning subsystem, a remote management subsystem and an escape direction indicating subsystem.

As shown in Figure 2, the zigbee wireless positioning subsystem in the escape system of the present invention includes a zigbee wireless positioning module (Texas Instruments (TI) cc2431-F128 can be used), a temperature and smoke sensor module (Anniewell PT-602PC can be used) , Zigbee central base station module (Texas Instruments (TI) cc2533 can be used) and battery automatic charging module (AC-DC charging module of Songchuan Electric Co., Ltd. can be used).

The remote management subsystem in the escape system of the present invention includes a base station and a computer. When a fire breaks out, as long as the base station is placed near the fire scene and cooperates with a laptop computer, the distribution of personnel at the fire scene can be reflected. The base station is responsible for communicating with the zigbee central base station module in the zigbee wireless positioning subsystem.

The zigbee wireless positioning subsystem is pre-set on the path of the fire scene safety passage. According to the specific conditions of the path, a set of zigbee wireless positioning subsystems is fixed every 20 to 30 meters. In the existing safety and fire prevention facilities, the emergency exit sign of the safe passage is a mandatory national standard. The zigbee wireless positioning subsystem of the present invention is small in size and can fully utilize the space and power of the existing exit sign of the safe passage without rewiring. The subsystem is equipped with a battery automatic charging module, which can supply power for more than 100 hours after a power failure. The entire building space is divided into several areas, and each area is equipped with a zigbee central base station module responsible for managing the zigbee wireless positioning subsystem in the area and communicating with the base station. The zigbee central base station module sends the collected personnel positions to the base station. Through the working points arranged by the zigbee wireless positioning subsystem, a set of spatial maps of the building can be established in the computer. When a fire occurs, the zigbee wireless positioning subsystem will send the escape route to the escape direction indicating subsystem. The temperature and smoke sensor modules of this subsystem are in a dormant state when there is no fire alarm signal. When the fire alarm signal is triggered, the module starts to work and collects the temperature and smoke parameters on site. If the collected parameter values are within the safe range, it means that the area can be used as an escape route. If the collected parameter value exceeds the safe range, it means that the area can no longer be used as an escape route, and a signal is sent to the escape direction indicating subsystem to re-plan the escape route. The zigbee central base station sends the received personnel positioning information to the base station, and the base station communicates with the computer to understand the distribution of personnel at the fire scene, so as to plan rescue plans and take effective rescue measures.

As shown in Figure 3, the escape direction indication subsystem in the present invention includes a zigbee wireless receiving module (Texas Instruments (TI) cc2431-F128 can be used), MSP430 central processing unit, gyroscope module (ADXRS gyroscope chip can be used), 2-degree-of-freedom motor stand (can be self-made), laser projector (can use Microvision PicoP) and power module (can use DC-DC power module of Songchuan Electric Co., Ltd.).

The escape direction indicating subsystem is fixed on the front end of the mouth of the anti-smoke mask. When a fire breaks out, the escapee wears the anti-smoke mask, the system will automatically run into the working state, the zigbee wireless receiving module in the escape direction indicating subsystem receives the positioning signal sent by the zigbee wireless positioning subsystem, and the escape The direction is projected onto the ground in the form of a green laser icon.

After the escape direction indicating subsystem of the present invention receives a positioning signal sent by a zigbee wireless positioning subsystem, it will locate the mark point, and transmit the direction of the mark point to the MSP430 central processor, and the MSP430 central processor will carry out the target direction Lock, and send the angle of the locked direction to the gyroscope module, and the gyroscope module controls the changing angle of the 2-degree-of-freedom motor stand, so that the 2-degree-of-freedom motor stand always keeps the locked direction unchanged. That is to say, no matter how the escaper's head changes, the laser projector fixed on the 2-DOF motor stand always keeps the locked direction unchanged, and the projected green laser escape direction mark also remains unchanged, so that the escaper can You can observe your escape direction at any time.

Example:

Arrange several zigbee wireless positioning modules on each floor, covering at least the main passages and exits. Connecting these points on the floor plan can depict the basic structure of the entire floor. A main feature of the present invention is that it can plan a clear escape route for escapees.

As shown in Figure 4, this is a schematic diagram of the distribution of zigbee wireless positioning subsystems on a floor. Several zigbee wireless positioning modules are arranged in each channel, and the distance of each zigbee wireless positioning module cannot be greater than its own wireless transmission distance, that is to say, the transmission ranges of every two zigbee wireless transmission modules must overlap. Each zigbee wireless positioning module has a unique name, A01001~A01025 are 25 zigbee wireless positioning modules, such as A01022, which means the No. 22 zigbee wireless positioning module on the first floor of Building A. At a certain position on the floor, set up a zigbee central base station module. The set position must be able to cover the zigbee wireless positioning module on the entire floor, and maintain wireless communication with the zigbee central base station modules on other floors.

The distribution map of the zigbee wireless positioning subsystem of the entire building is input into the computer software, and when a fire danger occurs, the entire system will automatically operate. The zigbee wireless positioning subsystem detects the distribution of people on the floor and automatically plans the escape route.

For example, if someone needs to escape from room 109, there are 5 escape routes from room 109 to the safety exit on this floor. After the temperature and smoke sensors of the system detect the fire, they transmit the signal to the system software, and finally determine the third route as the escape route.

After the escape personnel in Room 109 wear anti-smoke masks, the system will automatically operate. Personnel in room 109 can receive signals from multiple zigbee wireless positioning subsystems installed around, but the system only selects the signal from the zigbee wireless positioning subsystem of the escape route. When the person in room 109 walks to the door of the room, the A01020 wireless positioning subsystem will confirm the location information of the person, and the A01018 wireless positioning subsystem will give the escape direction of the escaped person and guide the escaped person to the direction of A01012, via A01008→A01004 →Guidance A01003 until reaching the safety exit.

After the escape route is determined, the escape route is sent to the escape direction indicating subsystem. The zigbee wireless receiving module receives the instruction, and after being processed by the MSP430 processor, sends the specific escape direction to the ADXRS gyroscope module. The ADXRS gyroscope module controls the 2-degree-of-freedom motor stand, so that the laser projector fixed on the motor stand always points in the direction of escape. In this way, the green arrow projected by the laser projector to the ground always points to the same escape direction, and is not affected by the movement and mind shaking of the survivor. Survivors can easily observe the escape direction at any time and get timely and correct rescue.

Claims (3)

1. the fire disaster intelligently escape system based on Zigbee-technology, comprises telemanagement subsystem, zigbee wireless location subsystem and escape direction indication subsystem; Described zigbee wireless location subsystem is arranged on the path of escape way of scene of fire, it carries out wireless telecommunications with telemanagement subsystem, escape direction indication subsystem respectively by Zigbee-technology, zigbee wireless location subsystem is for locating the personal information of scene of fire, and according to scene of fire situation, cook up survivor's escape route, simultaneously, zigbee wireless location subsystem sends to telemanagement subsystem by the personal information of scene of fire, and escape route is sent to escape direction indication subsystem; Described telemanagement subsystem is cooked up relief scheme according to the personal information of the scene of fire receiving, and carries out long-range relief commander; Described escape direction indication subsystem is arranged on the mouth front end of the protection from fumes face shield that survivor wears, and it can lock the escape route receiving, and guides survivor to escape; It is characterized in that, described zigbee wireless location subsystem comprises temperature and Smoke Sensor module, zigbee wireless locating module, zigbee center base station module and battery automatic charging module; Described battery automatic charging module is connected with zigbee wireless locating module, temperature and Smoke Sensor module, zigbee center base station module respectively, and it can provide electric energy at least 100 hours for above-mentioned module under powering-off state; Described temperature and Smoke Sensor module are connected with zigbee wireless locating module, its temperature parameter for Real-time Collection scene of fire and smog parameter, and send the parameter of collection to zigbee wireless locating module; Described zigbee wireless locating module and the wireless connections of zigbee center base station module, it is for locating the personal information of scene of fire, and sends the parameter information that personnel positioning information and temperature and Smoke Sensor module transmit to zigbee center base station module; Described zigbee center base station module is for sending to base station by the personnel positioning information receiving and temperature and smog parameter information.

2. the fire disaster intelligently escape system based on Zigbee-technology as claimed in claim 1, it is characterized in that, described telemanagement subsystem comprises base station and computer, base station and computer expert cross wireless network and carry out communication, base station is placed near scene of fire, base station and zigbee wireless location subsystem carry out wireless telecommunications, and its scene of fire personal information that zigbee wireless location subsystem is sent sends to computer to show.

3. the fire disaster intelligently escape system based on Zigbee-technology as claimed in claim 1, it is characterized in that, described escape direction indication subsystem comprises zigbee wireless receiving module, MSP430 central processing unit, gyro module, 2DOF motor stand, laser projecting apparatus and power module; Described power module is connected with zigbee wireless receiving module, MSP430 central processing unit, gyro module, 2DOF motor stand, laser projecting apparatus respectively, and provides electric energy for above-mentioned module; Described zigbee wireless receiving module is connected with MSP430 central processing unit, the personnel positioning information that it is sent for receiving zigbee wireless location subsystem, and the position travel direction sign to personnel, and the direction of sign is sent to MSP430 central processing unit; Described MSP430 central processing unit is connected with gyro module, and it,, for the personnel that receive are indicated to direction locks, and sends to gyro module the angle of locking direction; Described gyro module is connected with 2DOF motor stand, and it,, for according to the variation angle of the angle information control 2DOF motor stand receiving, makes 2DOF motor stand remain that locking direction is constant; Described laser projecting apparatus is fixed on 2DOF motor stand, and it projects escape direction on ground in green laser icon mode, for guiding survivor to escape.

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