Linkage closing control system of fire control room

Abstract

The utility model relates to a linkage closing control system for a fire-fighting control room, which belongs to the technical field of fire-fighting linkage control and comprises a plurality of data acquisition and control terminals mounted in a building and an automatic fire alarm and linkage control system connected with the data acquisition and control terminals through a CAN (controller area network) bus. The smoke temperature is gradually increased, the 280 DEG C fire damper acts and outputs an action signal to the main control module, the main control module sends a signal for closing the fire fighting fan related to the 280 DEG C fire damper to the fan controller, and the fan controller closes the fire fighting fan after receiving the fire fighting linkage fan stopping signal.

Description

Technical Field

[0001] The utility model relates to the technical field of fire linkage control, in particular to a fire control room linkage closing control system. Background Art

[0002] In order to prevent the fire from spreading and expanding in buildings such as complex buildings, it is necessary to take necessary fire separation measures, by dividing the space of the building into several fire partitions, so that once a fire occurs in each fire partition, it will not spread outward within a certain period of time, so as to effectively control the fire and create good conditions for fire fighting. In the prior art, fire doors and protective roller shutters are widely used in fire protection of construction projects. However, the current fire doors have some problems in fire protection practice due to unreasonable design. Utility Model Content

[0003] The utility model aims at the technical problems existing in the prior art and provides a fire control room linkage closing control system.

[0004] The technical solution of the utility model to solve the above technical problems is as follows: a fire control room linkage closing control system, comprising a plurality of data acquisition and control terminals installed in a building, and a fire automatic alarm and linkage control system connected to the data acquisition and control terminals via a CAN bus;

[0005] The data acquisition and control terminal includes a temperature sensor, a smoke sensor, a sensor data preprocessing module, a main control module, a 280°C fire damper, a fan controller, a fire fan, a data transmission module and a power module;

[0006] The temperature sensor and the smoke sensor are connected to the main control module through the sensor data preprocessing module respectively, the signal output end of the 280°C fire damper is connected to the main control module, the main control module is connected to the fire fan through the fan controller, and the data transmission module and the power supply module are connected to the main control module respectively;

[0007] The automatic fire alarm and linkage control system comprises an input module, an automatic fire alarm host, an alarm module, a data sending module, a data storage module, a clock module and a power supply module; the input module, the alarm module, the data sending module, the data storage module, the clock module and the power supply module are respectively connected to the automatic fire alarm host, and the input module is also connected to the data transmission module of the data acquisition and control terminal in a wireless communication manner.

[0008] As a further preferred solution of a fire control room linkage shutdown control system of the utility model, the sensor data preprocessing module includes a sensor signal conditioning circuit, a voltage signal conditioning circuit, a current signal conditioning circuit, an analog switch unit, a voltage divider follower filter unit, and an A / D conversion unit. The temperature sensor and the smoke sensor are connected to the main control module through the sensor signal conditioning circuit, the voltage signal conditioning circuit, the current signal conditioning circuit, the analog switch unit, the voltage divider follower filter unit, and the A / D conversion unit respectively.

[0009] As a further preferred solution of the fire control room linkage closing control system of the utility model, the data storage module includes a 256Mb Flash module and a 4Gb DDR3 module, and the Flash module and the DDR3 module are respectively connected to the automatic fire alarm host.

[0010] As a further preferred solution of a fire control room linkage closing control system of the utility model, the sensor signal conditioning circuit includes an analog signal input end, a resistor R1, a resistor R2, a capacitor C1, and an operational amplifier U1. The analog signal input end is respectively connected to one end of the resistor R1 and one end of the resistor R2, the other end of the resistor R2 is connected to one end of the capacitor C1, the other end of the capacitor C1 is respectively connected to the other end of the resistor R1 and the positive input end of the operational amplifier U1, and the negative input end of the operational amplifier U1 is connected to the output end of the operational amplifier U1.

[0011] As a further preferred solution of the fire control room linkage shutdown control system of the utility model, the current signal conditioning circuit adopts the ACS714 chip of Allegro, which is a current-isolated current sensor with common-mode suppression field effect, and is composed of high-precision low-bias linear Hall sensors.

[0012] As a further preferred solution of a fire control room linkage closing control system of the utility model, the voltage signal conditioning circuit includes a voltage signal input end, a resistor R3, a resistor R4, a resistor R5, a capacitor C2, and an operational amplifier U2. The voltage signal input end is connected to one end of the resistor R3, and the other end of the resistor R3 is respectively connected to one end of the resistor R4 and one end of the resistor R5, the other end of the resistor R5 is connected to one end of the capacitor C2, and the other end of the capacitor C2 is respectively connected to the other end of the resistor R4 and the positive input end of the operational amplifier U1, and the negative input end of the operational amplifier U2 is connected to the output end of the operational amplifier U2.

[0013] As a further preferred solution of a fire control room linkage closing control system of the utility model, the voltage divider follower filter unit includes an operational amplifier U3, a resistor R11, a resistor R12, an operational amplifier U4, a resistor R13, and a capacitor C7. The output end of the operational amplifier U3 is connected to one end of the resistor R12, and the other end of the resistor R12 is respectively connected to one end of the resistor R11 and the positive input end of the operational amplifier U4. The output end of the operational amplifier U4 is connected to one end of the resistor R13, and the other end of the resistor R13 is respectively connected to one end of the capacitor C7 and the A / D conversion unit. The other end of the capacitor C7 is grounded, and the other end of the resistor R11 is connected to the current signal conditioning circuit.

[0014] As a further preferred solution of the fire control room linkage shutdown control system of the utility model, the analog switch unit adopts the ADG706 chip.

[0015] The beneficial effects of the utility model are as follows: 1. The utility model provides a fire control room linkage closing control system, which comprises a plurality of data acquisition and control terminals installed in a building, and an automatic fire alarm and linkage control system connected to the data acquisition and control terminals via a CAN bus. When a fire occurs in the building, the smoke temperature gradually rises, the 280°C fire damper is actuated and outputs an action signal to the main control module, and the main control module sends a signal to the fan controller to close the fire fan associated with the 280°C fire damper. After the fan controller receives the fire linkage fan stop signal, it closes the fire fan.

[0016] 2. The utility model collects multi-channel sensor signals, voltage signals, and current signals. The collected signals are processed successively through signal conditioning, analog switches, voltage follower, and anti-aliasing filtering. Compared with traditional test systems, the collected signals are more accurate, stable, and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall structural principle diagram of a fire control room linkage closing control system of the utility model;

[0018] Figure 2 It is the structural principle diagram of the data acquisition terminal of the utility model;

[0019] Figure 3 This is the structural principle diagram of the utility model automatic fire alarm system;

[0020] Figure 4 It is a structural principle diagram of the sensor data preprocessing module of the utility model;

[0021] Figure 5 It is a circuit diagram of the sensor signal conditioning circuit of the utility model;

[0022] Figure 6 It is a circuit diagram of the voltage signal conditioning circuit of the utility model;

[0023] Figure 7 The utility model is a circuit diagram of a voltage-dividing follower filtering unit. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0025] Fire linkage control means that after the fire detector detects a fire signal, it can automatically cut off the relevant air conditioners in the alarm area, close the fire dampers on the pipes, stop the relevant fan, open the smoke exhaust valves on the relevant pipes, automatically close the electric fire doors and fire shutter doors in the relevant parts, cut off the non-fire power supply in sequence, turn on the emergency lighting and evacuation sign lights, stop all elevators except the fire elevators, and control the control center through the controller.

[0026] This implementation provides a fire control room linkage shutdown control system, such as Figure 1 As shown, it includes multiple data acquisition and control terminals installed in the building, and an automatic fire alarm and linkage control system connected to the data acquisition and control terminals via a CAN bus.

[0027] like Figure 2 As shown, the data acquisition and control terminal includes a temperature sensor, a smoke sensor, a sensor data preprocessing module, a main control module, a 280°C fire damper, a fan controller, a fire fan, a data transmission module and a power module;

[0028] The temperature sensor and smoke sensor are connected to the main control module through the sensor data preprocessing module respectively, the signal output end of the 280°C fire damper is connected to the main control module, the main control module is connected to the fire fan through the fan controller, and the data transmission module and power supply module are connected to the main control module respectively.

[0029] like Figure 3 As shown, the automatic fire alarm and linkage control system includes an input module, an automatic fire alarm host, an alarm module, a data sending module, a data storage module, a clock module and a power supply module; the input module, the alarm module, the data sending module, the data storage module, the clock module and the power supply module are respectively connected to the automatic fire alarm host, and the input module is also connected to the data transmission module of the data acquisition and control terminal in a wireless communication manner.

[0030] When a fire occurs in a building, the smoke temperature gradually rises, the 280℃ fire damper is activated and the action signal is output to the main control module. The main control module sends a signal to the fan controller to shut down the fire fan associated with the 280℃ fire damper. After the fan controller receives the fire linkage fan stop signal, it shuts down the fire fan.

[0031] The main control module also sends a related trigger signal to the fire automatic alarm and linkage control system. The fire automatic alarm and linkage control system sends a trigger signal to other adjacent data acquisition and control terminals where the action occurs through the data sending module, and closes and stops the fire fan before the 280℃ fire damper of the adjacent data acquisition and control terminal takes the initiative to act.

[0032] In the automatic fire alarm and linkage control system, after receiving the relevant trigger signal sent by the data acquisition and control terminal, the automatic fire alarm host controls the alarm module to alarm and stores the relevant information in the data storage module. The relevant information includes the 280℃ fire damper action signal, action time, alarm module alarm time, action information of the nearby data acquisition and control terminal, etc.

[0033] The data storage module includes a 256Mb Flash module and a 4Gb DDR3 module, and the Flash module and the DDR3 module are respectively connected to the automatic fire alarm host.

[0034] like Figure 4 As shown, the sensor data preprocessing module includes a sensor signal conditioning circuit, a voltage signal conditioning circuit, a current signal conditioning circuit, an analog switch unit, a voltage divider follower filter unit, and an A / D conversion unit. The temperature sensor and the smoke sensor are connected to the main control module through the sensor signal conditioning circuit, the voltage signal conditioning circuit, the current signal conditioning circuit, the analog switch unit, the voltage divider follower filter unit, and the A / D conversion unit respectively.

[0035] like Figure 5 As shown, the sensor signal conditioning circuit includes an analog signal input terminal, a resistor R1, a resistor R2, a capacitor C1, and an operational amplifier U1. The analog signal input terminal is respectively connected to one end of the resistor R1 and one end of the resistor R2, the other end of the resistor R2 is connected to one end of the capacitor C1, the other end of the capacitor C1 is respectively connected to the other end of the resistor R1 and the positive input terminal of the operational amplifier U1, and the negative input terminal of the operational amplifier U1 is connected to the output terminal of the operational amplifier U1.

[0036] As the key component of the conditioning circuit, the utility model selects the AD8608 operational amplifier chip of ADI Company. The chip combines many excellent characteristics, has four-rail input and output while being powered by a single power supply, and can ensure high speed while also ensuring extremely low noise and input bias current, and is widely applicable to various circuits;

[0037] Since the input impedance of the op amp is generally very high, it is very susceptible to external interference when the input pin is left floating. Therefore, setting the resistor R2 can form a loop between the input end and the analog ground when the input pin is left floating, thereby ensuring the stability of the op amp.

[0038] In the voltage conditioning circuit, the rail-to-rail op amp can maximize the input and output voltage swings close to the power supply voltage value, but there is also a large deviation under high current conditions. Since the input voltage range of AD8608 is 0-0.5V, resistors R3 and R5 are set to form a voltage divider circuit to reduce the input voltage to below 5V.

[0039] According to the size of the current and the difference between AC and DC, the corresponding current collection methods are also different. Commonly used current collection methods include coaxial shunt method, current transformer method, Rogowski coil method, Hall sensor method and sampling resistor method, etc. The Hall sensor method is suitable for measuring both AC and DC currents, and can measure large currents. The current signal conditioning circuit adopts the ACS714 chip of Allegro, which is a current-isolated current sensor with common-mode suppression field effect, composed of high-precision low-bias linear Hall sensors.

[0040] The main control module controls the analog switch to select the address switching channel to achieve the effect of time-sharing multiplexing. When switching channels, the analog switch will affect the change of capacitive load, resulting in signal oscillation or ringing. The faster the switching speed of the analog switch, the more obvious this phenomenon is. Therefore, the selection of analog switches is particularly important. By analyzing and comparing various types of analog switches, this design uses the ADG706 chip.

[0041] like Figure 6 As shown, the voltage signal conditioning circuit includes a voltage signal input terminal, a resistor R3, a resistor R4, a resistor R5, a capacitor C2, and an operational amplifier U2. The voltage signal input terminal is connected to one end of the resistor R3, the other end of the resistor R3 is respectively connected to one end of the resistor R4 and one end of the resistor R5, the other end of the resistor R5 is connected to one end of the capacitor C2, the other end of the capacitor C2 is respectively connected to the other end of the resistor R4 and the positive input terminal of the operational amplifier U1, and the negative input terminal of the operational amplifier U2 is connected to the output terminal of the operational amplifier U2.

[0042] The current signal conditioning circuit adopts the ACS714 chip of Allegro Company, which is a current-isolated current sensor with common-mode field effect suppression and is composed of a high-precision low-bias linear Hall sensor.

[0043] like Figure 7 As shown, the voltage-dividing follower filtering unit comprises an operational amplifier U3, a resistor R11, a resistor R12, an operational amplifier U4, a resistor R13, and a capacitor C7. The output end of the operational amplifier U3 is connected to one end of the resistor R12, and the other end of the resistor R12 is respectively connected to one end of the resistor R11 and the positive input end of the operational amplifier U4. The output end of the operational amplifier U4 is connected to one end of the resistor R13, and the other end of the resistor R13 is respectively connected to one end of the capacitor C7 and the A / D conversion unit. The other end of the capacitor C7 is grounded, and the other end of the resistor R11 is connected to the current signal conditioning circuit. The signal passes through the voltage-dividing, following, and filtering circuits through the analog switch, and is then input into the AD converter. The voltage follower makes the circuit present high-resistance input and low-resistance output, thereby improving the circuit's load capacity. The chip models of the operational amplifier U3 and the operational amplifier U4 are AD8031. The maximum sampling current of the ACS714 chip is 5A.

[0044] Although the preferred embodiments of the utility model have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.

[0045] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A fire control room linkage shutdown control system, characterized in that: It includes multiple data acquisition and control terminals installed in the building, and automatic fire alarm and linkage control systems connected to the data acquisition and control terminals via CAN bus; The data acquisition and control terminal includes a temperature sensor, a smoke sensor, a sensor data preprocessing module, a main control module, a 280°C fire damper, a fan controller, a fire fan, a data transmission module and a power module; The temperature sensor and the smoke sensor are connected to the main control module through the sensor data preprocessing module respectively, the signal output end of the 280°C fire damper is connected to the main control module, the main control module is connected to the fire fan through the fan controller, and the data transmission module and the power supply module are connected to the main control module respectively; The automatic fire alarm and linkage control system comprises an input module, an automatic fire alarm host, an alarm module, a data sending module, a data storage module, a clock module and a power supply module; the input module, the alarm module, the data sending module, the data storage module, the clock module and the power supply module are respectively connected to the automatic fire alarm host, and the input module is also connected to the data transmission module of the data acquisition and control terminal in a wireless communication manner.

2. A fire control room linkage shutdown control system according to claim 1, characterized in that: The sensor data preprocessing module includes a sensor signal conditioning circuit, a voltage signal conditioning circuit, a current signal conditioning circuit, an analog switch unit, a voltage divider follower filter unit, and an A / D conversion unit. The temperature sensor and the smoke sensor are connected to the main control module through the sensor signal conditioning circuit, the voltage signal conditioning circuit, the current signal conditioning circuit, the analog switch unit, the voltage divider follower filter unit, and the A / D conversion unit respectively.

3. A fire control room linkage shutdown control system according to claim 2, characterized in that: The sensor signal conditioning circuit includes an analog signal input terminal, a resistor R1, a resistor R2, a capacitor C1, and an operational amplifier U1. The analog signal input terminal is respectively connected to one end of the resistor R1 and one end of the resistor R2. The other end of the resistor R2 is connected to one end of the capacitor C1. The other end of the capacitor C1 is respectively connected to the other end of the resistor R1 and the positive input terminal of the operational amplifier U1. The negative input terminal of the operational amplifier U1 is connected to the output terminal of the operational amplifier U1.

4. A fire control room linkage shutdown control system according to claim 2, characterized in that: The current signal conditioning circuit adopts the ACS714 chip of Allegro Company.

5. A fire control room linkage shutdown control system according to claim 2, characterized in that: The voltage signal conditioning circuit includes a voltage signal input terminal, a resistor R3, a resistor R4, a resistor R5, a capacitor C2, and an operational amplifier U2. The voltage signal input terminal is connected to one end of the resistor R3, the other end of the resistor R3 is respectively connected to one end of the resistor R4 and one end of the resistor R5, the other end of the resistor R5 is connected to one end of the capacitor C2, the other end of the capacitor C2 is respectively connected to the other end of the resistor R4 and the positive input terminal of the operational amplifier U1, and the negative input terminal of the operational amplifier U2 is connected to the output terminal of the operational amplifier U2.

6. A fire control room linkage shutdown control system according to claim 2, characterized in that: The voltage divider follower filter unit includes an operational amplifier U3, a resistor R11, a resistor R12, an operational amplifier U4, a resistor R13, and a capacitor C7. The output end of the operational amplifier U3 is connected to one end of the resistor R12, and the other end of the resistor R12 is respectively connected to one end of the resistor R11 and the positive input end of the operational amplifier U4. The output end of the operational amplifier U4 is connected to one end of the resistor R13, and the other end of the resistor R13 is respectively connected to one end of the capacitor C7 and the A / D conversion unit. The other end of the capacitor C7 is grounded, and the other end of the resistor R11 is connected to the current signal conditioning circuit.

7. A fire control room linkage shutdown control system according to claim 2, characterized in that: The analog switch unit adopts ADG706 chip.

8. A fire control room linkage shutdown control system according to claim 1, characterized in that: The data storage module includes a 256Mb Flash module and a 4Gb DDR3 module, and the Flash module and the DDR3 module are connected to the automatic fire alarm host respectively.

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