Fire-fighting linkage alarm module for dual-power supply system

Abstract

The utility model relates to the technical field of power supply equipment, in particular to a fire-fighting linkage alarm module for a dual-power supply system, which comprises a low-voltage direct-current output module, an alarm information sending module and an alarm information receiving module. The alarm information sending module comprises a trigger circuit and a reverse voltage output circuit, the alarm information receiving module comprises a reverse voltage receiving circuit and a linkage response circuit, and the reverse voltage receiving circuit triggers the linkage response circuit to be switched on according to reverse voltage. The beneficial effects are that by using the time interval of the middle zero potential of the pulse square wave DC power supply, the fire-fighting linkage alarm modules can perform signal transmission through reverse voltage, thereby realizing effective fusion linkage of a fire-fighting alarm system and a power supply system, reducing the cost of arranging the fire-fighting alarm system, and improving the application range of the fire-fighting alarm system.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply equipment, in particular to a fire linkage alarm module for a dual power supply system. Background Art

[0002] In actual electricity usage scenarios, in order to realize fire detection and alarm of the surrounding environment, it is necessary to add another fire alarm system in addition to the original power supply system, which increases the cost of laying the fire alarm system. At the same time, it is difficult to achieve linkage between the fire alarm system and the original power supply system, which affects the popularization and application of the fire alarm system. Utility Model Content

[0003] The purpose of the utility model is to provide a fire linkage alarm module for a dual power supply system, which can integrate the fire alarm system into the power supply system and lower the threshold for using the fire alarm system.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fire linkage alarm module for a dual power supply system, comprising a low-voltage DC output module, an alarm information sending module, and an alarm information receiving module. The low-voltage DC output module is used to output a pulse square wave DC power supply with a certain frequency and a certain duty cycle to the ground neutral line. The alarm information sending module and the alarm information receiving module are both connected in parallel to the ground neutral line. The alarm information sending module includes a trigger circuit and a reverse voltage output circuit. The alarm information receiving module includes a reverse voltage receiving circuit and a linkage response circuit. The reverse voltage receiving circuit triggers the linkage response circuit to turn on according to the reverse voltage.

[0005] Specifically, the trigger circuit of the alarm information sending module is multiple and can trigger the reverse voltage output circuit to output reverse voltages of different voltage values.

[0006] Specifically, there are multiple reverse voltage output circuits and an inductor circuit is used.

[0007] Specifically, there are multiple alarm information receiving modules connected in parallel to the ground neutral line.

[0008] Specifically, the reverse voltage receiving circuit is of multiple types and uses a switch circuit that is triggered to conduct by different reverse voltage values.

[0009] Specifically, the trigger circuit uses a fire detection sensor and / or a manual trigger switch.

[0010] Specifically, the multiple linkage response circuits of the multiple alarm information receiving modules at least include a fire alarm and a control solenoid valve.

[0011] The beneficial effects of the utility model are as follows: by outputting a pulsed square wave DC power supply on the ground neutral line of the power supply system, the DC power supply is used to power the fire linkage alarm module, and the time interval of zero potential in the middle of the pulsed square wave DC power supply is used to enable signal transmission between the fire linkage alarm modules through reverse voltage, thereby realizing effective integration and linkage of the fire alarm system and the power supply system, reducing the cost of setting up the fire alarm system, and increasing the application scope of the fire alarm system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a circuit connection schematic diagram of the fire linkage alarm module and the power supply system in the embodiment;

[0013] Attached Figure 2 It is a circuit connection diagram of an alarm information sending module using a fire detection sensor as a trigger circuit in an embodiment;

[0014] Attached Figure 3 A circuit connection diagram of an alarm information sending module using a manual trigger switch as a trigger circuit in an embodiment;

[0015] Attached Figure 4 A circuit connection diagram of an alarm information receiving module using a fire alarm as a linkage response circuit in an embodiment;

[0016] Attached Figure 5 4 is a circuit connection diagram of an alarm information receiving module using a control solenoid valve as a linkage response circuit in an embodiment. DETAILED DESCRIPTION

[0017] Example 1, reference Figure 1-5 A fire linkage alarm module for a dual power supply system, comprising a low-voltage direct current output module, an alarm information sending module, and an alarm information receiving module. The low-voltage direct current output module is used to output a pulse square wave direct current power supply with a certain frequency and a certain duty cycle to the ground neutral line. The alarm information sending module and the alarm information receiving module are both connected in parallel to the ground neutral line. The alarm information sending module comprises a trigger circuit and a reverse voltage output circuit. The alarm information receiving module comprises a reverse voltage receiving circuit and a linkage response circuit. The reverse voltage receiving circuit triggers the linkage response circuit to turn on according to the reverse voltage.

[0018] In this embodiment, the low-voltage DC output module outputs a pulse square wave DC with a certain frequency and a certain duty cycle to the ground zero line, so that the ground zero line can be used to provide low-voltage DC power, and the power supply of ordinary AC power and low-voltage DC power dual power is realized. In addition, when the low-voltage DC output module outputs a pulse square wave DC with a certain frequency and a certain duty cycle on the ground zero line, the reverse voltage output circuit of the alarm information sending module can use the zero potential time period in the pulse square wave DC to output a reverse voltage to the reverse voltage receiving circuit of the alarm information receiving module, thereby realizing the transmission of the alarm information. Specifically, the reverse voltage output circuit can use an inductor circuit. After the trigger circuit of the alarm information sending module triggers the reverse voltage output circuit to be connected to the ground zero line, the reverse voltage output circuit uses the high level of the pulse square wave DC on the ground zero line to charge the inductor therein, and sends a reverse voltage pulse to the ground zero line at the low level of the pulse square wave DC. After receiving the reverse voltage pulse output by the reverse voltage output circuit, the reverse voltage receiving circuit will trigger the linkage response circuit to be turned on, thereby realizing the trigger response of the fire alarm.

[0019] Among them, the alarm information sending module can be multiple and used to realize the sending of different types of fire alarm information. The type of the alarm information sending module depends on the type of the trigger circuit therein. The type of the trigger circuit includes but is not limited to a fire detection sensor and a manual trigger switch. The fire detection sensor can be a smoke sensor, a gas / natural gas sensor, etc. When a fire risk is detected in the environment, a reverse voltage pulse can be sent to the ground neutral line by triggering the reverse voltage output circuit to be connected to the ground neutral line, thereby triggering the linkage response circuit of the alarm information receiving module. The trigger circuit of the alarm information sending module can have multiple different trigger circuits corresponding to one reverse voltage output circuit, or one trigger circuit corresponding to one reverse voltage output circuit, which can be adjusted according to the actual triggering requirements.

[0020] In addition, there may be multiple alarm information receiving modules connected in parallel to the neutral line; the multiple alarm information receiving modules may be of different types, the difference mainly lies in the linkage response circuit, including but not limited to: fire alarm and control solenoid valve. The fire alarm can sound an alarm when triggered, and the control solenoid valve can be set on the gas / natural gas pipeline as a switch to control the gas / natural gas.

[0021] In addition, in order to make the triggering of different alarm information sending modules correspond to the triggering of different alarm information receiving modules, for example, when the alarm information sending module using the manual trigger switch as the trigger circuit sends a reverse voltage after being triggered, it is only necessary to use the fire alarm as the linkage response circuit to trigger the fire information receiving module, and when the alarm information sending module using the smoke sensor as the trigger circuit is triggered, it is necessary to use the fire alarm and the control electromagnetic valve as the linkage response circuit to trigger the fire information receiving module. The reverse voltage receiving circuit can be multiple and use a switch circuit that is triggered and turned on by different reverse voltage values, and correspondingly, the reverse voltage output circuit also uses a circuit that outputs different reverse voltage values; taking the above situation as an example, in the alarm information sending module using the manual trigger switch as the trigger circuit, the reverse voltage output circuit outputs a lower reverse voltage, and in the alarm information sending module using the smoke sensor as the trigger circuit, the reverse voltage output circuit uses a circuit that outputs a higher voltage, and correspondingly, the reverse voltage receiving circuit in the fire information receiving module using the fire alarm as the linkage response circuit has a lower trigger voltage, and the fire information receiving module using the control electromagnetic valve as the linkage response circuit has a higher trigger voltage, which can meet the requirements of the above situation. Specifically, the reverse voltage output by the reverse voltage output circuit can be adjusted by connecting different numbers of diodes in series or in parallel to the inductor of the reverse voltage output circuit, and the reverse voltage receiving circuit can adjust the reverse voltage triggered by adopting an optocoupler switching circuit and selecting optocouplers with different conduction voltages.

[0022] Of course, the above are only preferred implementations of the present utility model, and are not intended to limit the scope of use of the present utility model. Therefore, any equivalent changes made to the principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A fire linkage alarm module for a dual power supply system, characterized in that: It includes a low-voltage direct current output module, an alarm information sending module, and an alarm information receiving module. The low-voltage direct current output module is used to output a pulse square wave direct current power supply with a certain frequency and a certain duty cycle to the ground neutral line. The alarm information sending module and the alarm information receiving module are both connected in parallel to the ground neutral line. The alarm information sending module includes a trigger circuit and a reverse voltage output circuit. The alarm information receiving module includes a reverse voltage receiving circuit and a linkage response circuit. The reverse voltage receiving circuit triggers the linkage response circuit to turn on according to the reverse voltage.

2. A fire linkage alarm module for a dual power supply system according to claim 1, characterized in that: The trigger circuits of the alarm information sending module are multiple and can trigger the reverse voltage output circuit to output reverse voltages of different voltage values.

3. A fire linkage alarm module for a dual power supply system according to claim 2, characterized in that: The reverse voltage output circuit is multiple and adopts an inductor circuit.

4. A fire linkage alarm module for a dual power supply system according to claim 2, characterized in that: There are multiple alarm information receiving modules which are connected in parallel to the ground neutral line.

5. A fire linkage alarm module for a dual power supply system according to claim 4, characterized in that: The reverse voltage receiving circuits are of multiple types and use switch circuits that are triggered to conduct by different reverse voltage values.

6. A fire linkage alarm module for a dual power supply system according to claim 2, characterized in that: The trigger circuit adopts a fire detection sensor and / or a manual trigger switch.

7. A fire linkage alarm module for a dual power supply system according to claim 4, characterized in that: The multiple linkage response circuits of the multiple alarm information receiving modules include but are not limited to fire alarms and control solenoid valves.

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