Fire extinguishing agent release circuit, control method, fire extinguishing agent release system, and ship

Abstract

The embodiment of the present application relates to a fire extinguishing agent release circuit, a control method, a fire extinguishing agent release system and a ship, wherein the fire extinguishing agent release circuit comprises a pre-release circuit, a judgment module and a release circuit; the pre-release circuit is used for outputting first alarm information in response to a first signal, wherein the first alarm information indicates that the fire extinguishing agent will be released after a first delay time; the judgment module is used for outputting a second signal in the case that the number of people entering and leaving a target area is consistent; and the release circuit is used for outputting a fire extinguishing agent release signal in response to the first signal and the second signal after at least the first delay time, wherein the fire extinguishing agent release signal is used for controlling the opening of at least one fire extinguishing agent valve; on the basis of pre-warning delay release of the fire extinguishing agent, only in the case that the number of people entering and leaving the area where the fire exists is consistent, the fire extinguishing agent can be released, and the accidental casualties of people caused by release of the fire extinguishing agent are effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of marine fire prevention, and more particularly to a fire extinguishing agent release circuit, control method, fire extinguishing agent release system, and ship. Background Technology

[0002] Carbon dioxide is a colorless and odorless toxic gas. As the main fire extinguishing medium for the main switchboard room and generator room of ships, it has a good fire extinguishing effect.

[0003] When using carbon dioxide for fire extinguishing, a warning is usually given in advance, and then the carbon dioxide is released after a period of time. Although a warning is given, incidents of accidental injury to personnel still occur from time to time. Summary of the Invention

[0004] The embodiments of the present invention provide a fire extinguishing agent release circuit, a control method, a fire extinguishing agent release system, and a ship to solve the technical problem of personnel injury caused by fire extinguishing agent release.

[0005] In a first aspect, embodiments of the present invention provide a fire extinguishing agent release circuit, including a pre-release circuit, a decision module, and a release circuit. The pre-release circuit is connected to the release circuit, and the release circuit is connected to the decision module. The pre-release circuit is configured to output a first alarm message in response to a first signal, the first alarm message indicating that the fire extinguishing agent will be released after a first delay time. The decision module is configured to output a second signal when it is determined that the number of people entering and leaving the target area is consistent. The release circuit is configured to output a fire extinguishing agent release signal in response to the first signal and the second signal after at least a first delay time, the fire extinguishing agent release signal being used to control the opening of at least one fire extinguishing agent valve.

[0006] In some embodiments, the pre-release circuit includes a first switch, a time relay, and an alarm; the first switch, the time relay, and the alarm are connected in series to a power supply; wherein the first switch is used to close in response to the first signal, the time relay is used to set a first delay time, and the alarm is used to output first alarm information.

[0007] In some embodiments, one end of the first switch is connected to one end of a power supply, the other end of the first switch is connected to one end of the coil of the time relay, the other end of the coil of the time relay is connected to one end of the alarm, and the other end of the alarm is connected to the other end of the power supply.

[0008] In some embodiments, the release circuit includes the time relay, the second switch, and the release relay; the time relay's delayed closing contact, the second switch, and the release relay are connected in series to the power supply; wherein, the time relay's delayed closing contact is used to close after a first delay time in response to the first signal, the second switch is used to close in response to the second signal, and the release relay is used to output a fire extinguishing agent release signal.

[0009] In some embodiments, one end of the delayed closing contact of the time relay is connected to one end of the power supply, the other end of the delayed closing contact of the time relay is connected to one end of the second switch, the other end of the second switch is connected to one end of the coil of the release relay, the other end of the coil of the release relay is connected to the other end of the power supply, and the contact of the release relay is connected in series with at least one fire extinguishing agent valve.

[0010] In some embodiments, the decision module includes a check-in device, which is used to output a second signal to the second switch when it is determined that the number of people entering and leaving the target area is consistent.

[0011] In a second aspect, embodiments of the present invention provide a control method for a fire extinguishing agent release circuit, applied to the fire extinguishing agent release circuit described in any of the first aspects; the method includes: a pre-release circuit responding to a first signal outputting a first alarm message, the first alarm message indicating that the fire extinguishing agent will be released after a first delay time; a decision module outputting a second signal when determining that the number of people entering and leaving the target area is consistent; and a release circuit responding to the first signal and the second signal, outputting a fire extinguishing agent release signal after at least a first delay time, the fire extinguishing agent release signal being used to control the opening of at least one fire extinguishing agent valve.

[0012] In some embodiments, the pre-release circuit includes a first switch, a time relay, and an alarm; the pre-release circuit responds to a first signal and outputs first alarm information, including: setting a first delay time based on the time relay; the first switch closes in response to the first signal, the time relay is energized, and the alarm outputs the first alarm information.

[0013] In some embodiments, the release circuit includes the time relay, the second switch, and the release relay; the release circuit responds to the first signal and the second signal, and outputs a fire extinguishing agent release signal after at least a first delay time, the fire extinguishing agent release signal being used to control the opening of at least one fire extinguishing agent valve, including: the time-delayed closing contact of the time relay responds to the first signal and closes after the first delay time; the second switch closes in response to the second signal; when both the time-delayed closing contact of the time relay and the second switch are closed, the coil of the release relay is energized, causing the contacts of the release relay to close, the closing of the contacts of the release relay controlling the opening of at least one fire extinguishing agent valve.

[0014] In some embodiments, the method further includes: if the decision module determines that the number of people entering and leaving the target area is still inconsistent after a second delay time, outputting a second alarm message, the second alarm message indicating that there are people staying in the target area.

[0015] Thirdly, embodiments of the present invention provide a fire extinguishing agent release system, including a fire extinguishing agent release circuit as described in any of the first aspects and at least one fire extinguishing agent storage device, wherein the outlet of the fire extinguishing agent storage device is provided with a fire extinguishing agent valve; the fire extinguishing agent release circuit is used to execute the control method as described in any of the second aspects to output a fire extinguishing agent release signal, thereby controlling the opening of at least one fire extinguishing agent valve to deliver the fire extinguishing agent in the fire extinguishing agent storage device to the target area.

[0016] Fourthly, embodiments of the present invention provide a ship, including the ship body and the fire extinguishing agent release system described in the third aspect.

[0017] The fire extinguishing agent release circuit, control method, fire extinguishing agent release system, and ship provided in this invention embodiment include a fire extinguishing agent release circuit comprising a pre-release circuit, a decision module, and a release circuit. The pre-release circuit is connected to the release circuit, and the release circuit is connected to the decision module. The pre-release circuit is used to output a first alarm message in response to a first signal, indicating that the fire extinguishing agent will be released after a first delay time. The decision module is used to output a second signal when it is determined that the number of people entering and leaving the target area is consistent. The release circuit is used to output a fire extinguishing agent release signal after at least a first delay time in response to the first and second signals. The fire extinguishing agent release signal is used to control the opening of at least one fire extinguishing agent valve. This achieves the goal of releasing the fire extinguishing agent only when it is determined that the number of people entering and leaving the fire-affected area is consistent, based on the pre-warning delay release of the fire extinguishing agent, effectively reducing accidental casualties caused by the release of the fire extinguishing agent. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a fire extinguishing agent release circuit provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of another fire extinguishing agent release circuit provided in an embodiment of the present invention;

[0022] Figure 3 A schematic flowchart illustrating a control method for a fire extinguishing agent release circuit provided in an embodiment of the present invention;

[0023] 101 - Pre-release circuit; 102 - Decision module; 103 - Release circuit. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Carbon dioxide is a colorless and odorless toxic gas, and its effectiveness as a primary fire extinguishing agent in ship main switchboard rooms and generator rooms is obvious. However, when using carbon dioxide for fire extinguishing, an advance warning is usually given, followed by the release of carbon dioxide after a certain period. Despite this warning, accidents still frequently occur, resulting in casualties.

[0026] To address the aforementioned technical problems, the technical concept of this invention is to: provide early warning and delay the release of carbon dioxide, and on this basis, add a personnel check-in function to ensure that carbon dioxide cannot be released normally before personnel leave the room, so as to avoid casualties.

[0027] In a first aspect, embodiments of the present invention provide a fire extinguishing agent release circuit. Figure 1 This is a schematic diagram of a fire extinguishing agent release circuit provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the extinguishing agent release circuit includes:

[0028] The system comprises a pre-release circuit 101, a decision module 102, and a release circuit 103. The pre-release circuit 101 is connected to the release circuit 103, and the release circuit 103 is connected to the decision module 102. The pre-release circuit 101 is configured to output a first alarm message in response to a first signal, indicating that the extinguishing agent will be released after a first delay time. The decision module 102 is configured to output a second signal when it is determined that the number of people entering and leaving the target area is consistent. The release circuit 103 is configured to output a extinguishing agent release signal in response to the first and second signals after at least a first delay time, and the extinguishing agent release signal is used to control the opening of at least one extinguishing agent valve.

[0029] Specifically, the target area can be understood as the area where a fire occurs, such as the main power distribution room or generator room of a ship. When someone discovers a fire in the target area, they can press the corresponding button or switch to send a signal to the pre-release circuit 101, namely the first signal. After receiving the first signal, the pre-release circuit 101 will immediately issue an alarm message. The alarm message will release the extinguishing agent after a first delay time, such as 30 seconds. The alarm message can be broadcast by voice. Upon hearing the alarm, personnel in the target area will evacuate the area promptly. The judgment module 102 will determine in real time whether the number of people entering and leaving the target area is consistent. If they are inconsistent, it means that some people are still remaining in the target area. If they are consistent, it means that all personnel in the target area have left. At this time, a second signal can be output to the release circuit 103. The release circuit 103 will only output the extinguishing agent release signal after receiving the first and second signals. That is, the release circuit 103 will only output the control signal to open the extinguishing agent valve when someone discovers the fire and presses the corresponding button, and all personnel in the target area have left. The output control signal will be at least after the first delay time, thereby opening the extinguishing agent valve and releasing the extinguishing agent.

[0030] For example, after receiving the first signal, the pre-release circuit 101 immediately outputs an alarm message indicating that the extinguishing agent will be released 20 seconds later, i.e., the first delay time is set to 20 seconds. If the decision module 102 determines that all personnel have left the target area before the first delay time, such as after 10 seconds, the release circuit 103 will output the extinguishing agent release signal after 20 seconds (i.e., after the first delay time). If the decision module 102 determines that all personnel have left the target area after the first delay time, such as after 30 seconds, the release circuit 103 will output the extinguishing agent release signal after 30 seconds (after the first delay time).

[0031] It should be noted that the first delay time can be set to a small value, so that the fire extinguishing agent can be released as soon as it is confirmed that there are no people remaining in the target area. This will ensure that the fire is controlled in its initial stage as much as possible while minimizing property damage, and on the premise of ensuring no casualties.

[0032] The fire extinguishing agent release circuit provided in this embodiment of the invention includes a pre-release circuit, a decision module, and a release circuit. The pre-release circuit is connected to the release circuit, and the release circuit is connected to the decision module. The pre-release circuit is used to output a first alarm message in response to a first signal, indicating that the fire extinguishing agent will be released after a first delay time. The decision module is used to output a second signal when it is determined that the number of people entering and leaving the target area is consistent. The release circuit is used to output a fire extinguishing agent release signal after at least a first delay time in response to the first and second signals. The fire extinguishing agent release signal is used to control the opening of at least one fire extinguishing agent valve. That is, this embodiment of the invention, through the decision module, ensures that the fire extinguishing agent can only be released after all personnel have left the fire area, thus guaranteeing personnel safety.

[0033] Figure 2 This is a schematic diagram of another fire extinguishing agent release circuit provided in an embodiment of the present invention, as shown below. Figure 2 As shown, based on the aforementioned embodiment, the pre-release circuit includes a first switch K1, a time relay R1, and an alarm; the first switch K1, the time relay R1, and the alarm are connected in series to the power supply; wherein, the first switch K1 is used to close in response to the first signal, the time relay R1 is used to set a first delay time, and the alarm is used to output first alarm information.

[0034] Specifically, the first switch K1, also known as the pre-release switch, is manually controlled. When a person manually closes the first switch K1, the first switch K1 receives the first signal. The first delay time can be set via the time relay R, and a relatively small first delay time can be set. The alarm can be a sound playback terminal. For example... Figure 2 As shown, the first switch K1, the time relay R1, and the alarm are connected in series to the power supply to form a circuit, namely the pre-release circuit, also known as the pre-release loop. When personnel discover a fire, they manually close the first switch K1. At this time, the pre-release loop is closed, the time relay R1 is energized, and the alarm broadcasts a message that the extinguishing agent will be released after the first delay time.

[0035] In some embodiments, one end of the first switch K1 is connected to one end of a power supply, the other end of the first switch K1 is connected to one end of the coil of the time relay R1, the other end of the coil of the time relay R1 is connected to one end of the alarm, and the other end of the alarm is connected to the other end of the power supply.

[0036] Specifically, one end of the power supply can be a live wire and the other end can be a neutral wire. That is, one end of the first switch K1 is connected to the live wire, and the other end is connected to one end of the coil of the time relay R1. The other end of the coil of the time relay R1 is connected to one end of the alarm, and the other end of the alarm is connected to the neutral wire. When the first switch K1 is closed, the coil of the time relay R1 is energized, and the alarm broadcasts an alarm message.

[0037] In some embodiments, the release circuit includes the time relay R1, the second switch K2, and the release relay R; the time-delayed closing contact K3 of the time relay R1, the second switch K2, and the release relay R are connected in series to the power supply, wherein the time-delayed closing contact K3 of the time relay R1 is used to close after a first delay time in response to the first signal, the second switch K2 is used to close in response to the second signal, and the release relay R is used to output a fire extinguishing agent release signal.

[0038] Continue to refer to Figure 2 As shown, the delayed closing contact K3 of time relay R1, the second switch K2, and the release relay R are connected in series to the power supply, forming a circuit. Therefore, the release circuit can also be called the release circuit. When personnel discover a fire, they manually close the first switch K1. After the first delay time, the delayed contact K3 of time relay R1 closes. When the judgment module determines that the number of people entering and leaving the target area is consistent, it outputs a second signal to the second switch K2. The second switch K2 closes. With both the delayed contact K3 of time relay R1 and the second switch K2 closed, the release circuit closes, the release relay R is energized, and outputs a fire extinguishing agent release signal to at least one fire extinguishing agent valve. The fire extinguishing agent valve opens, releasing the fire extinguishing agent.

[0039] In some embodiments, one end of the delayed closing contact K3 of the time relay R1 is connected to one end of the power supply, the other end of the delayed closing contact K3 of the time relay R1 is connected to one end of the second switch K2, the other end of the second switch K2 is connected to one end of the coil of the release relay R, and the other end of the coil of the release relay R is connected to the other end of the power supply; the contact of the release relay R is connected in series with at least one fire extinguishing agent valve.

[0040] Specifically, when the first switch K1 is closed, the delayed closing contact K3 of the time relay R1 closes after the first delay time. When the second switch K2 receives the second signal output by the decision module, it closes. At this time, the coil of the release relay R is energized, generating a magnetic field, which controls the action of the contacts of the release relay R, thereby controlling the opening of the extinguishing agent valve and realizing the release of the extinguishing agent.

[0041] In some embodiments, the decision module includes a check-in device, which is used to output a second signal to the second switch K2 when it is determined that the number of people entering and leaving the target area is consistent.

[0042] Specifically, the decision module can be an opening device installed at the entrance and exit of the target area, which can record the people entering or leaving the target area; when the number of people entering and leaving is the same, it can output a second signal to the second switch K2, so that the second switch K2 is closed; when the number of people entering and leaving is inconsistent, the second switch K2 is in the open state.

[0043] Based on the aforementioned embodiments, a time relay can provide early warning of the release of fire extinguishing agents to personnel in fire hazard areas, and can also release the fire extinguishing agents after a certain delay. Furthermore, a check-in device can be used to determine whether the number of people entering and leaving the target area is consistent. Only when the number is consistent can the fire extinguishing agent be released, thereby reducing accidental casualties caused by the release of fire extinguishing agents.

[0044] Secondly, embodiments of the present invention also provide a control method for a fire extinguishing agent release circuit. Figure 3 This is a flowchart illustrating a control method for a fire extinguishing agent release circuit provided in an embodiment of the present invention, as shown below. Figure 3 As shown, the control method for the extinguishing agent release circuit includes:

[0045] Step S301: The pre-release circuit responds to the first signal and outputs the first alarm information, which indicates that the extinguishing agent will be released after a first delay time.

[0046] Step S302: If the number of people entering and leaving the target area is consistent, the decision module outputs a second signal.

[0047] Step S303: In response to the first signal and the second signal, the release circuit outputs a fire extinguishing agent release signal after at least a first delay time. The fire extinguishing agent release signal is used to control the opening of at least one fire extinguishing agent valve.

[0048] Specifically, when a person discovers a fire in the target area, they can press the first switch to send a first signal to the pre-release circuit, which will immediately output an alarm message. The decision module determines whether the number of people entering and leaving the target area is consistent. If they are consistent, it outputs a second signal. Based on the first and second signals, the release circuit will only output a fire extinguishing agent release signal to the fire extinguishing agent valve if someone presses the first switch and all personnel have left the target area. The fire extinguishing agent valve will then open, and the fire extinguishing agent will be released.

[0049] In some embodiments, the pre-release circuit includes a first switch, a time relay, and an alarm; step S301 includes: setting a first delay time based on the time relay; the first switch closing in response to the first signal, the time relay being energized, and the alarm outputting first alarm information.

[0050] Specifically, a first delay time, such as 20 seconds, can be set based on the time relay. When a person presses the first switch K1, the pre-release circuit closes, the time relay R1 is energized, and the alarm sounds to remind the personnel on site to pre-release carbon dioxide.

[0051] In some embodiments, the release circuit includes the time relay, the second switch, and the release relay; step S303 includes: the time-delayed closing contact of the time relay closes after a first delay time in response to the first signal; the second switch closes in response to the second signal; when both the time-delayed closing contact of the time relay and the second switch are closed, the coil of the release relay is energized, causing the contacts of the release relay to close, and the closing of the contacts of the release relay controls the opening of at least one fire extinguishing agent valve.

[0052] Specifically, the alarm alerts on-site personnel to pre-release carbon dioxide, prompting them to leave the target area. When the check-in device confirms that the number of check-ins entering and leaving the room is consistent, the second switch of the release circuit closes, the entire release circuit closes, the release relay is energized, the extinguishing agent valve opens, and the extinguishing agent is released.

[0053] In some embodiments, the method further includes: if the decision module determines that the number of people entering and leaving the target area is still inconsistent after a second delay time, outputting a second alarm message, the second alarm message indicating that there are people staying in the target area.

[0054] Specifically, the alarm alerts on-site personnel to pre-release carbon dioxide and to leave the target area. If the card-swipe device determines that the number of cards entered and the number of cards left the room are inconsistent, the second switch of the release circuit will fail to close, causing the release circuit to fail and the extinguishing agent release to fail. In this case, an alarm should be triggered to promptly notify the on-duty personnel for personnel confirmation and subsequent fire extinguishing procedures. It should be noted that the second delay time is longer than the first delay time.

[0055] The control method for the extinguishing agent release circuit provided in this embodiment of the invention can be referred to the description of the extinguishing agent release circuit in the foregoing embodiment for its implementation principle and beneficial effects, and will not be repeated here.

[0056] Thirdly, embodiments of the present invention also provide a fire extinguishing agent release system, including a fire extinguishing agent release circuit as described in any of the preceding claims and at least one fire extinguishing agent storage device, wherein a fire extinguishing agent valve is provided at the outlet of the fire extinguishing agent storage device; the fire extinguishing agent release circuit is used to execute the control method as described in any of the preceding claims to output a fire extinguishing agent release signal, thereby controlling the opening of at least one fire extinguishing agent valve to deliver the fire extinguishing agent in the fire extinguishing agent storage device to the target area.

[0057] Specifically, the extinguishing agent storage equipment can be centrally located in a room, such as room A. Pipelines can be laid from room A to various rooms prone to fire, such as room B, enabling remote release capability. A card-swipe device can be installed at the entrance and exit of room B to record personnel entering and exiting. An alarm can also be installed in room B. When a fire occurs in room B, the first switch of the pre-release circuit can be manually pressed. This energizes the time relay, and the alarm immediately outputs the first alarm message, indicating that the extinguishing agent will be released after a first delay. The card-swipe device verifies whether the number of people entering and exiting matches. If they do, a second signal is output to the second switch of the release circuit. The second switch closes, and the delayed-closing contact of the time relay in the release circuit closes after the first delay. At this point, the release circuit is closed, the release relay is energized, the extinguishing agent valve opens, and the extinguishing agent is delivered to room B through pipelines.

[0058] It should be noted that the fire extinguishing agent release system provided in this embodiment of the invention is applicable to areas with remote release capability. The so-called remote release capability means that it can be released in a dedicated room where carbon dioxide cylinders are stored, rather than being released on-site in the protected area. The protected area is connected to the carbon dioxide cylinders through a pipeline system.

[0059] This invention also provides a vessel, including the vessel body and the aforementioned fire extinguishing agent release system. The vessel provided in this invention shares the same implementation principle and beneficial effects as the foregoing embodiments, and will not be repeated here.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0061] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A fire extinguishing agent release circuit, characterized in that, It includes a pre-release circuit, a decision module, and a release circuit, wherein the pre-release circuit is connected to the release circuit, and the release circuit is connected to the decision module; The pre-release circuit is used to respond to a first signal and output a first alarm message, the first alarm message indicating that the extinguishing agent will be released after a first delay time; The decision module is used to output a second signal when it is determined that the number of people entering and leaving the target area is consistent; The release circuit is configured to respond to the first signal and the second signal, and output a fire extinguishing agent release signal after at least a first delay time, the fire extinguishing agent release signal being used to control the opening of at least one fire extinguishing agent valve; The pre-release circuit includes a first switch, a time relay, and an alarm. The first switch, time relay, and alarm are connected in series to the power supply; Wherein, the first switch is used to close in response to the first signal, the time relay is used to set the first delay time, and the alarm is used to output the first alarm information; The release circuit includes the delayed closing contact of the time relay, a second switch, and a release relay; The time relay's delayed closing contact, the second switch, and the release relay are connected in series to the power supply; The time relay's delayed closing contact is used to close after a first delay time in response to the first signal; the second switch is used to close in response to the second signal; and the release relay is used to output a fire extinguishing agent release signal.

2. The extinguishing agent release circuit according to claim 1, characterized in that, One end of the first switch is connected to one end of the power supply, and the other end of the first switch is connected to one end of the coil of the time relay. The other end of the coil of the time relay is connected to one end of the alarm, and the other end of the alarm is connected to the other end of the power supply.

3. The extinguishing agent release circuit according to claim 1, characterized in that, One end of the delayed closing contact of the time relay is connected to one end of the power supply, the other end of the delayed closing contact of the time relay is connected to one end of the second switch, the other end of the second switch is connected to one end of the coil of the release relay, the other end of the coil of the release relay is connected to the other end of the power supply, and the contact of the release relay is connected in series with at least one fire extinguishing agent valve.

4. The extinguishing agent release circuit according to claim 1 or 3, characterized in that, The decision module includes a card-punching device, which outputs a second signal to the second switch when it is determined that the number of people entering and leaving the target area is consistent.

5. A control method for a fire extinguishing agent release circuit, characterized in that, The method is applied to the extinguishing agent release circuit according to any one of claims 1-4; the method includes: The pre-release circuit responds to the first signal and outputs a first alarm message, which indicates that the extinguishing agent will be released after a first delay time. If the number of people entering and leaving the target area is consistent, the decision module outputs a second signal. The release circuit responds to the first signal and the second signal and outputs a fire extinguishing agent release signal after at least a first delay time. The fire extinguishing agent release signal is used to control the opening of at least one fire extinguishing agent valve. The pre-release circuit responds to the first signal and outputs first alarm information, including: The first delay time is set based on the time relay; The first switch closes in response to the first signal, the time relay is energized, and the alarm outputs the first alarm information; The release circuit responds to the first signal and the second signal, and outputs a fire extinguishing agent release signal after at least a first delay time. The fire extinguishing agent release signal is used to control the opening of at least one fire extinguishing agent valve, including: The time relay's delayed closing contact responds to the first signal and closes after a first delay time; The second switch closes in response to the second signal; When both the delayed closing contact of the time relay and the second switch are closed, the coil of the release relay is energized, causing the contacts of the release relay to close. The closing of the contacts of the release relay controls the opening of at least one fire extinguishing agent valve.

6. The control method according to claim 5, characterized in that, The method further includes: If the decision module determines that the number of people entering and leaving the target area is still inconsistent after the second delay time, it outputs a second alarm message, which indicates that there are people staying in the target area.

7. A fire extinguishing agent release system, characterized in that, Includes a fire extinguishing agent release circuit as described in any one of claims 1-4 and at least one fire extinguishing agent storage device, wherein the outlet of the fire extinguishing agent storage device is provided with a fire extinguishing agent valve; The extinguishing agent release circuit is used to execute the control method as described in claim 5 or 6, so as to output an extinguishing agent release signal, thereby controlling at least one extinguishing agent valve to open and deliver the extinguishing agent in the extinguishing agent storage device to the target area.

8. A ship, characterized in that, It includes the ship body and the fire extinguishing agent release system as described in claim 7.

Images