Protective device for linking fire-fighting automatic alarm control switch and machine room gate

Abstract

The utility model discloses a protective device for linking a fire-fighting automatic alarm control switch and a machine room gate, and relates to the field of railway traffic. Comprising a fire-fighting alarm acquisition unit, a machine room door control unit and a sound-light alarm unit, the fire-fighting alarm acquisition unit realizes fire-fighting state acquisition of all types of fire-fighting alarm boxes; the machine room door control unit achieves logic control over the fire alarm state and the door opening state, for example, when fire automatic spraying is not closed, a machine room door is in a closed state; the sound-light alarm unit checks the consistency of the state information and provides sound-light alarm. According to the utility model, the current mode of the fire-fighting alarm is connected with the magnetic switch of the machine room gate through the acquisition and driving circuit, so that the door can be opened only when the fire-fighting controller is in the manual mode, the fire-fighting alarm mode is prevented from being determined by manual inspection, and meanwhile, the functions of sound-light alarm and one-key and remote emergency are added; and the safety risk of operators in the machine room is reduced to a great extent.

Description

Technical Field

[0001] The utility model relates to the field of railway transportation, in particular to a protective device which links a control switch of an automatic fire alarm with a machine room door. Background Art

[0002] The current fire-fighting device in the computer room uses a method of spraying HFC-227ea gas instantly to quickly consume oxygen to extinguish fires. Therefore, if a worker wants to enter the computer room, he needs to manually switch the alarm mode from automatic to manual. In case of fire, the fire-fighting device needs to be started manually to ensure the safety of personnel after entering the computer room. However, this method cannot ensure that the operator switches the fire alarm control mode as required every time after entering and leaving the computer room, and there is a risk of accidental spraying of the fire extinguisher when the worker is working inside the computer room.

[0003] During daily inspections, fault diagnosis, and disposal, the utility model can directly ensure that the fire protection system inside the computer room is in the correct fire protection mode at all times, while ensuring the personal safety of the staff when working inside the computer room. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a protective device that links the automatic fire alarm control switch and the machine room door. Through the acquisition and drive circuit, the current mode of the fire alarm is connected to the magnetic switch of the machine room door, so that the fire controller can only open the door when it is in manual mode, preventing the staff from forgetting to switch the fire mode inside the machine room and causing the fire to spray by mistake, which greatly reduces the fire safety hazards of the machine room equipment. At the same time, we have designed an audible and visual alarm function for this tool. After the personnel switch the fire mode, this tool will automatically broadcast "the fire mode is switched to manual position / automatic position" to warn the staff. In order to prevent the possibility of failure of this tool, a power-off device will be connected in series in the drive circuit of the magnetic switch of the door, so that the power can be cut off from both inside and outside the machine room through a "forced" button, which can ensure the safety of the staff to the greatest extent.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical solutions: a protective device that links the automatic fire alarm control switch and the computer room door, including a fire alarm collection unit, a computer room door control unit and a sound and light alarm unit; the fire alarm collection unit realizes the fire status collection of all types of fire alarm boxes; the computer room door control unit realizes the logical control of the fire alarm status and the door opening status, such as: when the automatic fire sprinkler is not closed, the computer room door is in a closed state (remote control module is reserved); the sound and light alarm unit verifies the consistency of status information and provides sound and light alarm (remote status monitoring interface is reserved).

[0006] A protective device that links an automatic fire alarm control switch with a machine room door, specifically comprising a switch signal access circuit connected to a power supply circuit, a relay control circuit, an audio playback circuit and a photosensitive probe circuit, wherein the switch signal access circuit is connected to the relay control circuit, and the relay control circuit is also connected to the audio playback circuit and the photosensitive probe circuit.

[0007] Preferably, the switch signal access circuit includes an inside door unsealing button, an opening door button, an outside door unsealing button and a light detection part, and the inside door unsealing button, the opening door button, the outside door unsealing button and the light detection part are connected in series with the relay control circuit with built-in door suction through an amplifying circuit.

[0008] Preferably, the audio playback circuit uses the chip DT9001-FL.

[0009] Preferably, the door unsealing button inside, the door opening button, and the door unsealing button outside all use the chip TLP184.

[0010] Preferably, the photosensitive probe circuit adopts the chip STC8F2K64S4_LQFP32.

[0011] Preferably, the power supply circuit adopts the chip LM2596-5V.

[0012] The utility model first connects the power circuit and connects the device to the power supply. Then select the corresponding acquisition method (switch signal access circuit) according to the model of the fire automatic alarm. After confirming the acquisition method, connect the drive circuit (relay control circuit), and finally connect the sound and light alarm (audio playback circuit) and one-button cut-off function (photosensitive probe circuit) in series in the drive circuit.

[0013] When there are no operators in the computer room, the alarm protection device connects the current mode of the fire alarm and the magnetic switch of the computer room door through the acquisition and drive circuit, so that the door can only be opened when the fire controller is in manual mode (automatic spraying is prohibited), avoiding the use of manual inspection to determine the fire alarm mode, and at the same time adding sound and light alarms as well as one-button and remote emergency functions, greatly reducing the safety risks of computer room operators.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model has wide applicability, can meet the internal structure connection of various types of current automatic fire alarms, meets the current fire safety needs, has the advantages of simple structure, low cost, strong practicality, etc., and has great promotion potential;

[0016] 2. The utility model can avoid the risks caused by staff operating errors while ensuring fire safety, and send out sound and light alarms to cultivate the staff's good habit of switching fire modes before entering and leaving the computer room;

[0017] 3. The utility model can release the magnetic switch with one click through an external "forced" power-off button, thus solving the problem that the door of the machine room cannot be opened when a fault occurs and enhancing its safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is described in detail below with reference to the accompanying drawings and specific implementation methods;

[0019] Figure 1 It is the system framework diagram of the utility model;

[0020] Figure 2 This is a power supply circuit diagram of the utility model;

[0021] Figure 3 This is a switch signal access circuit diagram of the utility model;

[0022] Figure 4 This is a relay control circuit diagram of the utility model;

[0023] Figure 5 A diagram of the audio playback circuit of the utility model;

[0024] Figure 6 This is the circuit diagram of the photosensitive probe of the utility model. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] Reference Figure 1-6 This specific implementation adopts the following technical solutions: a protective device that links the automatic fire alarm control switch and the computer room door, including a fire alarm collection unit A, a computer room door control unit B and a sound and light alarm unit C; the fire alarm collection unit A realizes the fire status collection of all types of fire alarm boxes; the computer room door control unit B realizes the logical control of the fire alarm status and the door opening status, such as: when the automatic fire sprinkler is not closed, the computer room door is in a closed state (remote control module is reserved); the sound and light alarm unit C verifies the consistency of status information and provides sound and light alarm (remote status monitoring interface is reserved).

[0027] A protective device that links an automatic fire alarm control switch with a machine room door, specifically comprising a switch signal access circuit 2 connected to a power supply circuit 1, a relay control circuit 3, an audio playback circuit 4 and a photosensitive probe circuit 5, wherein the switch signal access circuit 2 is connected to the relay control circuit 3, and the relay control circuit 3 is also connected to the audio playback circuit 4 and the photosensitive probe circuit 5.

[0028] It is worth noting that the switch signal access circuit 2 includes an inside door unsealing button U8, an opening door button U6, an outside door unsealing button U7 and a light detection part L. The inside door unsealing button U8, the opening door button U6, the outside door unsealing button U7 and the light detection part L are connected in series with a relay control circuit 3 with a built-in door suction through an amplifying circuit.

[0029] It is worth noting that the audio playback circuit 4 uses the chip DT9001-FL.

[0030] It is worth noting that the door unblocking button U8, door opening button U6 and door unblocking button U7 all use chip TLP184.

[0031] It is worth noting that the photosensitive probe circuit 5 uses the chip STC8F2K64S4_LQFP32.

[0032] In addition, the power supply circuit 1 adopts the chip LM2596-5V.

[0033] The working principle of this specific implementation is as follows:

[0034] 1. When there is a manual switch on the fire alarm switch panel, the internal gear switching mode is automatic when it is on and manual when it is off. We will collect the contacts on one side of the switch, determine the fire mode by monitoring the switch position, and then drive the magnetic switch of the machine room door through the amplification circuit in series with the relay;

[0035] 2. When the internal switching position of the fire alarm adopts the switch method, but there is no extra set of contacts for the acquisition circuit, then we can use the optical screen method, place it on one side of the switch contact, and monitor in real time whether the switch is in the on position to determine the current fire mode;

[0036] 3. When there is no switch on the fire alarm switch panel, the mode light displayed can be collected. The lighting circuit is composed of light-emitting diodes. For example, the yellow light is on in manual mode and the green light is on in automatic mode. The light collector collects the contacts of the light-emitting diodes to determine the lumens of the light it emits. Then, the relay is connected through the op amp circuit, and the relay is used to drive the switch of the magnetic door.

[0037] 4. When there is no switch on the fire alarm switch panel and the lumen of the internal light-emitting diode is too low, so that the light collector cannot accurately collect the color of the light, the fire mode can also be determined by collecting the voltage of the diode and calculating the voltage;

[0038] 5. Add the sound and light alarm function on the basis of completing the basic acquisition drive circuit. By connecting a sound and light alarm sensor to the drive circuit, when the drive circuit is activated, the sensor will send out corresponding sound and light reminders;

[0039] 6. To ensure the safety of the tool, a disconnect switch needs to be connected in the drive circuit, which can cut off the circuit from the outside with one click to ensure that the machine room door can be opened under any circumstances.

[0040] This specific implementation method controls the relay control circuit by collecting the switching value of the fire mode to drive the on and off of the electromagnetic valve. The corresponding sound and light alarm and other sensors are connected in series in the drive circuit, and the sensor is controlled to act at the same time when the drive circuit is actuated. The linkage between the fire alarm and the machine room door can prevent the staff from accidentally spraying due to forgetting to switch the automatic fire spraying mode during operation, which may cause personal safety risks. It can collect the current fire control mode to control the opening and closing of the machine room door. There are also sound and light reminders to ensure that the automatic spraying function is turned off when someone comes to work, and the automatic spraying function is turned on when someone leaves, as well as the external emergency power-off and door opening function, to enhance the practicality of the device.

[0041] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A protective device that links the automatic fire alarm control switch and the machine room door, characterized in that: It comprises a fire alarm collection unit (A), a machine room door control unit (B) and an audible and visual alarm unit (C); the fire alarm collection unit (A) realizes the fire status collection of all types of fire alarm boxes; the machine room door control unit (B) realizes the logical control of the fire alarm status and the door opening status, and reserves a remote control module; the audible and visual alarm unit (C) checks the consistency of status information, provides audible and visual alarms, and reserves a remote status monitoring interface.

2. A protective device for linking the automatic fire alarm control switch and the machine room door according to claim 1, characterized in that: Specifically, it comprises a switch signal access circuit (2) connected to a power supply circuit (1), a relay control circuit (3), an audio playback circuit (4) and a photosensitive probe circuit (5); the switch signal access circuit (2) is connected to the relay control circuit (3); the relay control circuit (3) is also connected to the audio playback circuit (4) and the photosensitive probe circuit (5).

3. A protective device for linking the automatic fire alarm control switch and the machine room door according to claim 2, characterized in that: The switch signal access circuit (2) comprises an inner door unblocking button (U8), a door opening button (U6), an outer door unblocking button (U7) and a light detection part (L). The inner door unblocking button (U8), the door opening button (U6), the outer door unblocking button (U7) and the light detection part (L) are connected in series with a relay control circuit (3) with a built-in door stop through an amplifying circuit.

4. A protective device for linking the automatic fire alarm control switch and the machine room door according to claim 2, characterized in that: The audio playback circuit (4) adopts the chip DT9001-FL.

5. A protective device for linking the automatic fire alarm control switch and the machine room door according to claim 3, characterized in that: The door inner unsealing button (U8), door opening button (U6) and door outer unsealing button (U7) all use the chip TLP184.

6. A protective device for linking the automatic fire alarm control switch and the machine room door according to claim 2, characterized in that: The photosensitive probe circuit (5) adopts the chip STC8F2K64S4_LQFP32.

7. A protective device for linking the automatic fire alarm control switch and the machine room door according to claim 2, characterized in that: The power supply circuit (1) adopts the chip LM2596-5V.

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