CN105336084A - Fire alarm linkage controller - Google Patents

Abstract

The invention relates to a fire alarm linkage controller, which belongs to the technical field of fire alarm equipment and mainly includes a central control unit, a power supply unit, and an output unit. The power supply unit and the output unit are respectively connected to the central control unit, and also includes partition linkage A control unit, a remote control unit, the partition linkage control unit and the remote control unit are respectively connected to the central control unit; a keyboard control unit, the keyboard control unit is connected to the partition linkage control unit. The invention connects the controller to the remote fire control center through the remote control unit, so that the controller can not only independently complete the fire alarm linkage gas fire extinguishing device for fire treatment, but also receive the instructions of the fire alarm linkage system for linkage control, which is convenient for different needs. It brings great convenience to emergency treatment and rescue work.

Description

A fire alarm linkage controller

technical field

The invention belongs to the technical field of fire alarm equipment, and more specifically relates to a fire alarm linkage controller.

Background technique

At present, there are more and more high-rise buildings, which occupy less land and have a high space utilization rate. However, it is necessary to avoid fires. Once a fire occurs, the fire will spread quickly and personnel transportation will be difficult, which will easily cause heavy losses. Therefore, it is necessary to deal with and control it in time when a fire occurs. The existing fire alarm controller directly receives the fire alarm signal from the detector and sends the alarm signal to the centralized controller for control. It has relatively limited fire information transmission and cannot directly transmit the fire information to the fire management department for alarm control. The controllers use on-site writing technology to modify the program, which makes the installation, maintenance and debugging of the controller very inconvenient, increases the cost of personnel, and is not conducive to the rapid upgrade and improvement of the controller products, and the external sensors and controllers use The multi-wire connection makes the on-site construction wiring troublesome, and the wiring is easy to cause entanglement, which is not conducive to the timely troubleshooting of technicians and the stable operation of the controller.

Contents of the invention

In order to solve at least one of the above-mentioned defects in the prior art, the present invention proposes a fire alarm linkage controller, which is connected to the fire linkage control system through a network interface, and can quickly and stably transmit complete types of information in real time to the fire system.

The technical solution of the present invention is as follows: a fire alarm linkage controller, including a central control unit, a power supply unit, and an output unit, the power supply unit and the output unit are respectively connected to the central control unit, and also includes a partition linkage control unit, the The partition linkage control unit is connected with the central control unit for sending the alarm signal to the central control unit for processing; the remote control unit, the remote control unit is connected with the central control unit for receiving the alarm signal in real time The alarm signal processed by the central control unit; the keyboard control unit, the keyboard control unit includes bus control buttons and direct control buttons, and the bus control buttons and direct control buttons are respectively connected to the partition linkage control unit.

Further, the controller is randomly placed in multiple partitions, the partition linkage control unit is configured as a plurality of linkage control units, and each linkage control unit controls one of the partitions correspondingly, and each linkage control unit is connected to at least An external detector receives the alarm signal of the at least one detector, and each linkage control unit sends the received alarm signal to the central control unit for linkage control processing.

Further, each of the multiple partitions is provided with a manual start output switch and a manual stop output switch, the manual start output switch and the manual stop output switch are connected to the partition linkage control unit, and the partition linkage The control unit feeds back the state information of the manual start output switch and the manual stop output switch to the central control unit for linkage control. Multi-wire wiring is used between the manual start output switch and manual stop output switch and the controller, and bus wiring is used between at least one external detector and the controller. This structure is convenient for construction, installation, technical inspection and maintenance.

Further, the manual start output switch and the manual stop output switch are connected to the controller by a multi-wire system, and the at least one external detector is connected to the controller by a bus system. The combination of bus system series connection and multi-wire system parallel connection method can maximize the utilization rate and control stability of the fire protection network, and also bring convenience to construction, installation, technical testing and maintenance.

Further, the remote control unit adopts an embedded control chip, and is connected to an external remote fire control center through a serial port, a CAN bus or the Internet. By using the remote control unit, the controller can be connected with the on-site centralized control center to independently complete the alarm control function, or it can be connected to the remote fire center through the network, and receive the instructions of the remote fire center for linkage control.

Further, it also includes a display unit and a storage unit, the display unit includes LED lights, audio, and liquid crystal display, and the LED lights, audio, and liquid crystal display are respectively connected to the central control unit for receiving the central control unit. The alarm signal data processed by the control unit is displayed; the storage unit is connected with the central control unit and used for saving the alarm signal data processed by the central control unit.

Further, each linkage control unit of the plurality of linkage control units includes an AD sampling module and an I ² C bus control module, and each linkage control unit monitors at least one external detector in real time through the AD sampling module working status information, and collecting alarm signal data of the at least one external detector, and the I ² C bus control module is connected with the central control unit.

Further, the power supply unit includes a main power module, a backup power module and a battery charging circuit, the main power module and the backup power module are respectively connected to the central control unit, and the battery charging circuit is respectively connected to the main power The module is connected to the backup power module.

Further, the output unit includes an active relay output and a passive relay output, and the active relay output and the passive relay output are respectively connected to the central control unit.

The central control unit is the core of the entire controller, monitors the working status and power status of the external detectors in real time, receives the alarm signals fed back by the external detectors for processing and display, and performs linkage control on multiple areas through the partition linkage control unit .

Compared with the prior art, the present invention has the following beneficial effects:

(1) Connect the controller to the remote fire protection center through the remote control unit, and the remote fire protection center will be able to receive all the information fed back from the scene in real time, so as to effectively monitor the controller host, and realize fire alarm linkage in real time without going to the scene Control, improve fire management, bring great convenience to emergency treatment and rescue work, and adopt remote control programming technology, technicians can extract fire alarm data remotely and re-modify each input and output point without going to the scene;

(2) The hardware is transformed into a wiring method combining bus system series connection and multi-wire star network: fire detectors with a wide distribution range will adopt bus system wiring; the internal output module of the chassis, manual start output switch, manual stop The output switch will be multi-wire wiring. Such a structure can maximize the utilization rate and control stability of the fire protection network, and also bring convenience to construction, installation, technical testing, and maintenance;

(3) By using the remote control unit, the controller can be connected with the on-site centralized control center to independently complete the alarm and fire treatment, or it can be connected to the remote fire center through the network, and receive the instructions of the remote fire center for linkage control, which is convenient for different needs occasions of use;

(4) By setting multiple linkage control units in the controller to control the fire alarm and fire extinguishing treatment in multiple areas, the scope of application is wider, and the alarm information and processing between different areas can be logically associated and jointly controlled by software.

Description of drawings

Fig. 1 is a structural block diagram of a fire alarm linkage controller of the present invention.

Fig. 2 is a structural block diagram of the internal central control unit of the present invention.

Fig. 3 is a structural block diagram of the internal display unit of the present invention.

Fig. 4 is a structural block diagram of the internal partition linkage control unit of the present invention.

Fig. 5 is a functional flow diagram of the internal bus control button of the present invention.

Fig. 6 is a functional flow diagram of the internal direct control button of the present invention.

Fig. 7 is a functional block diagram of the internal power supply unit of the present invention.

Fig. 8 is a functional flow diagram of the internal remote control unit of the present invention.

Fig. 9 is an overall flowchart of the controller system software of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings, but the embodiments of the present invention are not limited thereto.

As shown in Figure 1, a fire alarm linkage controller includes a central control unit, a power supply unit, and an output unit, the power supply unit and the output unit are respectively connected to the central control unit, and also includes a partition linkage control unit, the The partition linkage control unit is connected to the central control unit, and is used to send the alarm signal to the central control unit for processing; the remote control unit, the remote control unit is connected to the central control unit, and is used to receive the alarm signal in real time. The alarm signal processed by the central control unit; the keyboard control unit, the keyboard control unit includes bus control buttons and direct control buttons, and the bus control buttons and direct control buttons are respectively connected to the partition linkage control unit.

The control range of the controller of the present invention is designed with multiple gas fire extinguishing zones, has fire alarm and gas fire extinguishing control functions, and has the following characteristics:

240*64 dot matrix LCD, support backlight, Chinese and English combined display;

· LED status indicator;

·Touch button;

The local buzzer can remind fire alarm, failure and spraying signal;

· Light inspection, local noise reduction and other functions;

·Record the first fire alarm, start signal, spraying feedback time;

· Delayed countdown display;

· Time/date display;

·Unique LCD configuration menu, easy and quick to operate, no need for additional configuration tools;

·Maximum support for 26 sets of relay output;

Can receive external start control signal;

·Support 999 fire alarm event records;

·Support micro printer;

Support gas fire extinguishing remote control device;

Support access to compatible fire linkage control system through the remote network interface module;

·Support traditional smoke or heat detectors with four compatible controllers, and each channel is limited to 20 detectors.

The controller is randomly placed in multiple partitions, the partition linkage control unit is set as a plurality of linkage control units, each linkage control unit controls one of the partitions, and each linkage control unit is connected to at least one external detection and receive the alarm signal of the at least one detector, and each linkage control unit sends the received alarm signal to the central control unit for linkage control processing, and its structural block diagram is shown in FIG. 4 . The remote control unit is connected with an external fire control center through a serial port, CAN bus or Internet. By using the remote control unit, the controller can be connected with the on-site centralized control center to independently complete the alarm control function, or it can be connected to the remote fire center through the network, and receive the instructions of the remote fire center for linkage control.

Further, the above-mentioned controller also includes a display unit and a storage unit, the display unit includes an LED light driver, an audio driver, a liquid crystal display program, and a printer program, and is connected with a liquid crystal display, a printer, a sound and an LED indicator light, so The liquid crystal display screen, printer, audio and LED indicator lights are respectively connected with the central control unit, used to receive the alarm signal data processed by the central control unit and display, print or sound and light alarm, its structural block diagram is shown in the figure 3; the storage unit is connected to the central control unit, and is used to store the alarm signal data processed by the central control unit. The printer uses a thermal serial printer with a built-in Chinese character library, with fast printing speed, low noise and clear handwriting. Each line can print 40 standard characters and 20 Chinese characters. With a 5V power supply, the current is less than 1.5A. Due to the relatively large current during printing, the power supply of the printer is provided by the internal power supply of 5V, and the external output to each unit is 24V. Use the standard serial port of the core board to send data to the printer. The sound drives the buzzer, and according to the real-time situation, the output command sends out alarm, fault or gas spraying sound. The lamp driver program uses the ZLG7290I2C interface LED driver management chip to complete the drive of the LED lamp and refresh automatically.

Further, each of the linkage control units includes an AD sampling module and an I ² C bus control module, and each of the linkage control units monitors the working status information of at least one external detector in real time through the AD sampling module, and collects all The alarm signal data of at least one external detector is described, and the I ² C bus control module is connected with the central control unit.

Further, the power supply unit includes a main power module, a backup power module and a battery charging circuit, the main power module and the backup power module are respectively connected to the central control unit, and the battery charging circuit is respectively connected to the main power The module is connected to the backup power module, and its internal structure is shown in Figure 7. The central control unit monitors the running state of the main power of the power supply unit and the failure of the main power in real time, and sends the monitoring results to the display unit and the storage unit respectively. When the voltage of the main power module is lower than 18V and the voltage of the backup power module is lower than 20V, the central controller will broadcast the failure of the main power and the backup power through the audio, and when the power of the main power and the backup power shows that the power is insufficient, it will be charged by the battery The circuit charges the main power module and the backup power module.

Further, the output unit includes an active relay output and a passive relay output, the contact capacity is DC24V1A, the active relay output and the passive relay output are respectively connected to the central control unit, and the central control unit passes through I ² C bus drives relay outputs.

The central control unit is the core of the entire controller, monitors the working status and power status of the external detectors in real time, receives the alarm signals fed back by the external detectors for processing and display, and performs linkage control on multiple areas through the partition linkage control unit . It uses ARM Cortex-M3 series processor as the CPU, the functional block diagram is shown in Figure 2, and the software is written in KeilC language, including serial communication, data receiving and processing.

The serial port baud rate of the serial port communication program is 4800/19200bps, one stop bit, eight-bit data, and no parity. The standard communication format is as follows:

Target address||source address||data length||command word (or status word)||information description||CRC1||CRC2

Among them, the first byte uses the command bit, and the rest are data. The data length includes command words, information description and CRC check bytes, all of which are recorded in CRC check starting from the target address.

The central control unit collects the alarm signal data through the AD sampling module, and compares it with the alarm data in the storage unit. If it does not exist, a new alarm signal is sent to the display unit and the storage unit. When the state value is within the normal monitoring range, the central control unit does not issue a control command; when the state value of the detector is within the fault range, the central control unit sends a fault indication command to the I2C control bus ^; when When the state value of the detector is within the fire alarm range, the central control unit sends a fire alarm signal to the I ² C control bus.

The remote control unit uses the cost-effective ARM (embedded) system to develop an intelligent routing gateway module for remote data transmission. The core of the embedded control chip is ARM Cortex®-A8, which realizes data communication with different interfaces of the on-site centralized controller center. At the same time, it can be connected to the Internet. The network interface can be realized through private network or VPN technology, supports TCP/IP protocol, and supports the combination of wireless and wired methods. It is applicable to most applications and directly connects the data to the remote fire center. , and its specific structural design is shown in Figure 8. Its workflow is as follows:

First, the on-site area alarm host or centralized controller obtains the node data according to the automatic inspection, and sends the data to the cloud database through the intelligent gateway; the remote control programming terminal summarizes the information and data of each node through the cloud database according to the on-site situation, and then re-programs the control The program data information is uploaded to the cloud database platform through the Internet, and the on-site alarm controller or centralized controller receives and modifies the parameters in the machine through the intelligent gateway. At the same time, the on-site machine performs comprehensive processing, verification, In contrast, after the test, it is confirmed that the program data is correct, and the remote programming work is completed, so the on-site system can perform functions such as fire alarm and fault detection.

Remote fire control center->Internet->Cloud database->Intelligent gateway->On-site centralized control center->Modify program and parameters->Execute new program

On-site node data (automatic inspection)->intelligent gateway->cloud database->remote fire center.

The keyboard control unit includes a bus control button and a direct control button, the bus control button is controlled by the I ² C control bus, and realizes manual/automatic state output, alarm bell, sound and light and indicator light control, and its button detection adopts an external Interrupt detection method, because the controller has many LED indicators and control buttons, and ZLG7290 can meet the requirements of controlling 64 LED lights and 64 buttons, so ZLG7290 is used as a lamp and button scanning chip, and ZLG7290 communicates with the main control chip. One output button corresponds to one output module, powered by a single 5V, and the static power consumption is <180mA. In order to prevent the CPU from being disturbed by the outside world, the program runs away and the host cannot work, and a watchdog circuit is set up. During the normal working process, the main board CPU provides a feed dog signal to the watchdog circuit so as not to generate a reset signal. When there is no dog feeding signal, after a certain period of time, the watchdog generates a reset signal to reset the CPU and the program restarts. Its functional flow is shown in Figure 5.

Each of the plurality of partitions is provided with a manual start output switch and a manual stop output switch, the manual start output switch and the manual stop output switch are connected to the partition linkage control unit, and the direct control button will The self-switching state is sent to the partition linkage control unit, and the partition linkage control unit feeds back the switch state to the central control unit for linkage control. Multi-wire wiring is used between the manual start output switch and manual stop output switch and the controller, and bus wiring is used between at least one external detector and the controller. This structure is convenient for construction, installation, technical inspection and maintenance. Its functional flow is shown in Figure 6.

The controller system uses the KeilRTX real-time operating system to modularize the entire system. After the task is initialized, the system will enter the multi-task operating system. The overall flow chart of the entire system software is shown in Figure 9. First, open the controller to initialize parameters, read the data stored in the storage unit, and sample the voltage state to determine whether the main power is running or the backup power is running, and whether there is a main power. Or the backup power failure, the first partition and the second partition detect the smoke or temperature sensing signal of the external detector in real time, if there is a fire alarm signal, the partition linkage control unit will send the fire alarm signal to the central control unit for linkage processing, and the central control unit will The received fire alarm signal is processed and sent to the display unit and storage unit, and sent to the on-site centralized control center and remote fire control center through the remote control unit.

The embodiments of the present invention described above are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims (9)

1. a firefighting warning linkage controller, comprises central control unit, power supply unit, output unit, and described power supply unit and output unit are connected with described central control unit respectively, it is characterized in that: also comprise

Subregion coordinated signals unit, described subregion coordinated signals unit is connected with described central control unit, processes for alerting signal being sent to described central control unit;

Remote control unit, described remote control unit is connected with described central control unit, for the alerting signal after central control unit process described in real-time reception;

Keypad control unit, described keypad control unit comprises bus marco button and directly controls button, described bus marco button with directly control button and be connected with described subregion coordinated signals unit respectively.

2. firefighting warning linkage controller according to claim 1, it is characterized in that: described controller is placed on arbitrarily multiple subregion, described subregion coordinated signals unit is set to multiple coordinated signals unit, described each coordinated signals unit correspondence controls one of them subregion, described each coordinated signals unit connects at least one outer locator and receives the alerting signal of at least one detector described, and the alerting signal received sends to described central control unit to carry out coordinated signals process by described each coordinated signals unit.

3. firefighting warning linkage controller according to claim 2, it is characterized in that: each subregion in described multiple subregion is provided with and manually boots output switch and manually stop output switch, the described output switch that manually boots is connected with described subregion coordinated signals unit with the manual output switch that stops, and described subregion coordinated signals unit manually boots output switch by described and manually stop the status information feedback of output switch to carry out coordinated signals to described central control unit.

4. firefighting warning linkage controller according to claim 3, it is characterized in that: described in manually boot output switch and manually stop output switch adopting multiple-way system to be connected with between described controller, at least one outer locator described adopts bus system to be connected with between described controller.

5. firefighting warning linkage controller according to claim 1, is characterized in that: described remote control unit adopts embedded control chip, is connected with outer remote fire-fighting center by serial ports, CAN or internet.

6. firefighting warning linkage controller according to claim 2, it is characterized in that: also comprise display unit and storage unit, described display unit comprises LED, sound equipment, LCDs, described LED, sound equipment, LCDs are connected with described central control unit respectively, carry out showing and sound and light alarm for the alerting signal data after receiving described central control unit process; Described storage unit is connected with described central control unit, for preserving the alerting signal data after described central control unit process.

7. firefighting warning linkage controller according to claim 6, is characterized in that: each coordinated signals unit of described multiple coordinated signals unit includes AD sampling module and I ²c bus control module, described each coordinated signals unit by the work state information of described at least one outer locator of AD sampling module Real-Time Monitoring, and gathers the alerting signal data of at least one outer locator described, described I ²c bus control module is connected with described central control unit.

8. firefighting warning linkage controller according to claim 1, it is characterized in that: described power supply unit comprises main electric module, standby electric module and a battery charger, described main electric module is connected with described central control unit respectively with standby electric module, and described battery charger is respectively with described main electric module with for electric model calling.

9. firefighting warning linkage controller according to claim 8, it is characterized in that: described output unit comprises active relay and exports and passive relay output, and described active relay exports and is connected with described central control unit respectively with passive relay output.