CN113160514B - Air duct type smoke sensing system - Google Patents
Air duct type smoke sensing system Download PDFInfo
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- CN113160514B CN113160514B CN202010074911.4A CN202010074911A CN113160514B CN 113160514 B CN113160514 B CN 113160514B CN 202010074911 A CN202010074911 A CN 202010074911A CN 113160514 B CN113160514 B CN 113160514B
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
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Abstract
The invention provides an air duct type smoke sensing system, and relates to the technical field of fire fighting. This wind channel formula smoke is felt system includes: the smoke sensing device comprises a smoke sensing device body, a smoke sensing device body and a control device, wherein the smoke sensing device body comprises a vortex tube device with automatic dust removal and passive micro-pressurization functions; the base is used for limiting the smoke sensing device main body through a plurality of U-shaped clamping grooves of the base and arranging the smoke sensing device main body in the base, and the smoke sensing device main body is electrically connected with the base through a metal contact; wherein, the base is fixed in on new trend or the exhaust inlet, just set up energy memory in the base. According to the invention, smoke detection can be faster by means of the existing air duct airflow of the building; the embodiment of the invention utilizes the scroll device with the functions of micro-pressurization and automatic dust removal to separate dust and impurities, thereby avoiding false triggering, enabling the detection of the smoke sensor to be more effective and avoiding the problem that the dust screen is easy to block after being used for a long time.
Description
Technical Field
The invention relates to the technical field of fire fighting, in particular to an air duct type smoke sensing system.
Background
Along with the high-speed development of the Internet of things, smoke is felt to become a necessary device of the intelligent building. The general cloth of prior art smoke is felt and is put on indoor shed roof, and traditional smoke is felt and is laid in the roof top, and is lower because of indoor air flow rate, and general burning comparatively heavily spreads in whole house, or the point of getting on fire is located the smoke just and feels the below, and the smoke is felt the side and can be reported an emergency and asked for help or increased vigilance.
Part of smoke is induced by the fan of the smoke induction device to accelerate the circulation of air; however, due to the fact that severe scenes such as dust, sand and the like exist in part of environments, the dust and dust of non-burning particles easily interfere with the photoelectric smoke detection sensor to cause false triggering, and the influence caused by the false triggering is aggravated by air suction; part is breathed in and is come the big impurity particle of filtering through the filter screen, nevertheless because the filter screen footpath is toward less, changes the filter screen at intervals, otherwise the wind channel will be blockked up.
Disclosure of Invention
The embodiment of the invention provides an air duct type smoke detection system, which aims to solve the problems that smoke detection in the prior art is slow, smoke is detected when large-mass particles exist, smoke detection is easy to trigger mistakenly and dust screens are easy to block after being used for a long time.
In order to solve the above technical problem, an embodiment of the present invention provides an air duct type smoke sensing system, including:
the smoke sensing device comprises a smoke sensing device body, a smoke sensing device body and a control device, wherein the smoke sensing device body comprises a vortex tube device with automatic dust removal and passive micro-pressurization functions;
the base is used for limiting the smoke sensing device main body through the plurality of U-shaped clamping grooves of the base and arranging the smoke sensing device main body in the base, and the smoke sensing device main body is electrically connected with the base through a metal contact;
wherein, the base is fixed in on new trend or the exhaust inlet, just set up energy memory in the base.
Further, the inlet of the vortex tube device is in a horn shape;
the end of the body of the scroll means remote from the inlet of the scroll means is connected to a smoke sensor.
Further, the inlet diameter of the scroll device is larger than the main body diameter of the scroll device.
Furthermore, a first detachable dust collecting device is arranged at a tangent line of the vortex tube device perpendicular to the wind direction;
and a second detachable dust collecting device is arranged below the main body of the vortex tube device.
Further, the air duct type smoke sensing system of the embodiment of the invention further comprises:
the fan is arranged at the tail end of the smoke sensing device main body.
Further, the front face of the smoke detector body comprises:
a lateral isolation grid;
the narrow-band antenna is arranged on the transverse isolation grid.
Further, the base is provided with a pipe wall with a preset thickness;
the energy storage device is arranged in the base and is a rechargeable battery or a lithium battery.
Further, the device main part is felt to cigarette, still includes:
the main board is provided with a microcontroller, a programmable logic device, a narrow-band module, a metal-oxide-semiconductor field effect transistor, a power management module and a power supply circuit;
the main board is located inside the smoke detector main body.
The invention has the beneficial effects that:
compared with the smoke detection in the prior art, the smoke detection method has the advantages that smoke detection can be faster by means of the existing air duct airflow of the building; according to the embodiment of the invention, the scroll device with functions of micro-pressurization and automatic dust removal is utilized, so that dust and impurities are separated, false triggering is avoided, the detection of a smoke sensor is more effective, and the problem that a dust screen is easy to block after being used for a long time is avoided; the embodiment of the invention can utilize the fan to generate power by passive rotation and generate automatic switching of airflow by active rotation, so that the scene adaptability is stronger.
Drawings
Fig. 1 is a schematic structural diagram of an air duct type smoke sensing system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a front surface of a base of the air duct type smoke sensing system according to the embodiment of the present invention;
fig. 3 is a schematic structural diagram of the front surface of the main body of the air duct type smoke sensation system according to the embodiment of the invention;
fig. 4 is a schematic structural diagram illustrating a fan arrangement of the air duct type smoke sensing system according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an embodiment of a main board circuit of the air duct type smoke sensing system according to the embodiment of the present invention.
Description of reference numerals:
1-a smoke detector body; 2-a base; 3-a scroll device; 4-inlet of the scroll device; 5-a smoke sensor; 6-a first detachable dust collecting means; 7-a second detachable dust collecting device; 8-U-shaped clamping grooves; 9-lateral isolation grids; 10-narrow band antenna cloth; 11-a fan; 12-an energy storage device; 13-a main board; a-a power supply positive electrode; b-a power supply cathode; c-positive fan pole; d, a fan cathode; e-a speed measuring line; f is a vertical wind direction tangent line.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. In the following description, specific details are provided, such as specific configurations and components, merely to facilitate a thorough understanding of embodiments of the invention. It will therefore be apparent to those skilled in the art that various changes and modifications can be made in the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The invention provides an air duct type smoke detection system, aiming at the problems that smoke detection in the prior art is slow, smoke is detected when large-mass particles exist, smoke detection is prone to being triggered by mistake, and a dust screen is prone to being blocked after being used for a long time.
As shown in fig. 1, fig. 2 and fig. 5, an embodiment of the present invention provides a wind channel type smoke sensing system, including:
the smoke detector comprises a smoke detector body 1, wherein the smoke detector body 1 comprises a vortex tube device 3 with automatic dust removal and passive micro-pressurization functions;
the base 2 is used for limiting the smoke sensing device body 1 through a plurality of U-shaped clamping grooves 8 of the base 2 and arranging the smoke sensing device body 1 in the base 2, and the smoke sensing device body 1 is electrically connected with the base 2 through metal contacts;
the base 2 is fixed on a fresh air or exhaust inlet, and the energy storage device 12 is arranged in the base 2.
It should be noted that in the installation mode of the embodiment of the invention, the base 2 is arranged at the inlet of the fresh air or exhaust pipeline to replace the original dustproof grid baffle, and the smoke detection is carried out by utilizing the exhaust airflow of the building; the smoke detector main body 1 of the embodiment of the invention is internally provided with the scroll device 3 with passive micro-acceleration and automatic dust removal, the interior of the scroll device 3 accelerates the airflow, and the detachable dust collecting device is arranged at a specific position, thereby being beneficial to filtering dust and large-mass particles and reducing the possibility of false alarm.
As shown in fig. 1, in particular, the inlet 4 of the scroll device is in the shape of a trumpet;
the end of the body of the scroll means 3 remote from the inlet 4 of the scroll means is connected to a smoke sensor 5.
It should be noted that the smoke sensor 5 is located at the end of the main body of the scroll device 3, and the smoke sensor 5 detects smoke particles caused by combustion and performs local and cloud alarm through acousto-optic and narrowband internet of things (NB-IoT). Here, the cloud is preferably arranged, and the cloud can receive the alarm information of the smoke sensor 5 and make an emergency prompt and backup at the cloud.
Specifically, the inlet 4 of the scroll device has a diameter greater than the main body diameter of the scroll device 3.
Here, the inlet 4 of the scroll device is in a horn shape, the diameter of the inlet 4 of the scroll device is M, the middle part of the main body of the scroll device 3 is in a spiral shape, and the diameter is N, so that M > N, when the airflow flows into the main body of the scroll device 3 from the inlet 4 of the scroll device, a micro-pressurization is formed inside the scroll, and the pressurized airflow inside the scroll is accelerated; that is, the scroll device 3 has a function of passive micro-supercharging.
Specifically, a first detachable dust collecting device 6 is arranged at a vertical wind direction tangent line F of the vortex tube device 3;
a second detachable dust collecting device 7 is arranged below the main body of the vortex tube device 3.
In addition, the first detachable dust collecting device 6 is arranged at the position of the tangent line F perpendicular to the wind direction in fig. 1, and the first detachable dust collecting device 6 is used for collecting medium-mass and high-speed dust and particles; the second detachable dust collecting device 7 is arranged below the main body of the scroll device 3, and the second detachable dust collecting device 7 is used for collecting dust and particles with larger mass and low speed; the airflow passing through the inlet 4 of the scroll device passes through the first detachable dust collecting device 6 and the second detachable dust collecting device 7 for twice screening, thereby removing non-burning particles and dust and reducing the false triggering probability of the smoke detection at the later stage. Namely, the scroll device 3 has an automatic dust removal function.
Specifically, as shown in fig. 2 and fig. 4, the air channel type smoke sensing system of the present invention further includes:
and the fan 11 is arranged at the tail end of the smoke detector main body 1.
Here, when the fresh air or the exhaust duct has a large air volume, the fan blades of the fan 11 are driven to supply power to the whole energy storage system, and specifically, the speed measuring line E of the base 2 is connected with the fan 11. Furthermore, because the invention is installed in the fresh air or exhaust fan, which cannot ensure the fan 11 to work all day long, when the speed measuring line E of the base 2 detects that the rotating speed value of the fan 11 is lower than the threshold value V, it is considered that the current wind power is not enough to drive the detection airflow; here, the threshold V is a predetermined value.
As shown in fig. 1 and fig. 2, the smoke sensor body 1 and the base 2 are both provided with a power supply positive electrode a and a power supply negative electrode B, and the power supply positive electrode a and the power supply negative electrode B are used for connecting the energy storage device 12; the smoke sensing device body 1 and the base 2 are both provided with a fan anode C and a fan cathode D, the fan anode C and the fan cathode D are used for connecting a circuit of the fan 11, and when a fresh air or exhaust pipeline has large air volume, the fan blades of the fan 11 are driven to supply power to the whole energy storage system; if the current wind power is not enough to drive the detection airflow, the energy storage device 12 of the base 2 supplies power. Of course, the fan 11 may be separately connected to the mains to provide a continuous flow of air through the smoke detector for a long time.
As also shown in fig. 2, in particular, the base 2 has a tubular wall of a predetermined thickness;
the energy storage device 12 is disposed inside the base 2, and the energy storage device 12 is a rechargeable battery or a lithium battery.
It should be noted that the base 2 has the device locking and power supply functions at the same time, the base 2 has a pipe wall with a preset thickness, and a plurality of rechargeable No. 5 batteries or lithium batteries and the like are distributed around the pipe wall for large-current energy storage.
Further, the smoke sensing device body 1 is limited by the plurality of U-shaped clamping grooves 8 of the base 2, the smoke sensing device body 1 is arranged inside the base 2, and the smoke sensing device body 1 and the base 2 are electrically connected through metal contacts. Here, the device starts to supply power and starts to operate while the U-shaped card slot 8 is screwed in.
As also shown in fig. 3, the front surface of the smoking article device body 1 includes:
a lateral isolation grid 9;
a narrow band antenna cloth 10 is provided on the lateral isolation grid 9.
It should be noted that the transverse isolation grating 9 is an air inlet grating, on which a narrowband antenna cloth (NB) may be optionally attached, and the narrowband antenna cloth is a patch antenna.
Specifically, the smoke detector main body 1 further includes:
a main board 13 having a microcontroller, a programmable logic device, a narrow band module, a metal oxide semiconductor field effect transistor, a power management module and a power supply circuit;
the main board is located inside the smoke detector main body 1.
The end of the smoke detector main body 1 has a gating design of a fan blade passing circuit, and has double functions of driving rotation and wind power of an air duct to drive the smoke detector main body to rotate and generate electricity. The main board 13 includes a Microcontroller (MCU), a programmable logic device (CPLD), a narrow band module (NB module), a metal-oxide-semiconductor field effect transistor (MOSFET), and a power supply circuit. Specifically, as shown in fig. 5, the MCU is connected to the NB module and communicates with the NB module through a serial port signal (UART), the UART has a 3.3V level, and the MCU performs data interaction with a cloud system; the CPLD receives the rotating speed feedback of the fan 11, is used for detecting the rotating speed of the fan, controls the MOSFET group to carry out fan power generation or fan rotation, and carries out switching control between power supplies; specifically, in the power supply room, the power management module controls a discharge circuit (voltage reduction circuit) powered by the energy storage device 12 to operate or a voltage boost circuit of the fan 11 to operate; in particular, the MCU also receives the signal of the smoke sensor.
In conclusion, compared with the smoke detection in the prior art, the smoke detection method and the smoke detection device can enable smoke detection to be faster by means of the existing air duct airflow of the building; the embodiment of the invention utilizes the scroll device with micro-pressurization and automatic dust removal functions to separate dust and impurities, avoid false triggering, enable the detection of the smoke sensor to be more effective, and avoid the problem that a dust screen is easy to block after being used for a long time; the embodiment of the invention can utilize the fan to generate power by passive rotation and generate automatic switching of airflow by active rotation, so that the scene adaptability is stronger.
While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A ducted smoke sensing system, comprising:
the smoke sensing device comprises a smoke sensing device body (1), wherein the smoke sensing device body (1) comprises a vortex tube device (3) with automatic dust removal and passive micro-pressurization functions;
the cigarette sensing device comprises a base (2), a cigarette sensing device body (1) is limited through a plurality of U-shaped clamping grooves (8) of the base (2), the cigarette sensing device body (1) is arranged in the base (2), and the cigarette sensing device body (1) is electrically connected with the base (2) through a metal contact;
the base (2) is fixed on a fresh air or exhaust inlet, and an energy storage device (12) is arranged in the base (2);
wherein, a first detachable dust collecting device (6) is arranged at the position of a vertical wind direction tangent line (F) of the vortex tube device (3); the first detachable dust collecting device (6) is used for collecting medium-quality and high-speed dust and particles;
a second detachable dust collecting device (7) is arranged below the main body of the vortex tube device (3); the second detachable dust collecting device (7) is used for collecting dust and particles with larger mass and low speed;
wherein, the wind channel formula smoke is felt the system and is still included: the fan (11), the said fan (11) locates the end of the said smoke detector body (1);
the smoke detector main body (1) further comprises: a main board (13) provided with a microcontroller, a programmable logic device, a narrow-band module, a metal-oxide-semiconductor field effect transistor, a power management module and a power supply circuit;
the main board is positioned inside the smoke detector main body (1);
when the fresh air or the exhaust pipeline has large air volume, the fan blades of the fan (11) are driven to supply power to the whole energy storage device (12); if the current wind power is not enough to drive the detection airflow, the energy storage device (12) supplies power;
the programmable logic device receives the rotating speed feedback of the fan (11) and controls the metal oxide semiconductor field effect transistor to carry out automatic switching between fan passive rotation power generation or fan active rotation power supply.
2. The ducted smoke sensation system according to claim 1, wherein the inlet (4) of the scroll means is trumpet shaped;
the end of the body of the scroll means (3) remote from the inlet (4) of the scroll means is connected to a smoke sensor (5).
3. The ducted smoke sensing system according to claim 2, wherein the diameter of the inlet (4) of said scroll means is larger than the diameter of the main body of said scroll means (3).
4. A ducted smoke sensing system according to claim 1, wherein the front face of the smoke sensing device body (1) comprises:
a lateral isolation grid (9);
narrow-band antenna cloth (10) is arranged on the transverse isolation grid (9).
5. A ducted smoke sensation system according to claim 1, characterised in that the base (2) has a tubular wall of a preset thickness;
the energy storage device (12) is arranged inside the base (2), and the energy storage device (12) is a lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010074911.4A CN113160514B (en) | 2020-01-22 | 2020-01-22 | Air duct type smoke sensing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010074911.4A CN113160514B (en) | 2020-01-22 | 2020-01-22 | Air duct type smoke sensing system |
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| CN113160514A CN113160514A (en) | 2021-07-23 |
| CN113160514B true CN113160514B (en) | 2023-01-03 |
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| CN202010074911.4A Active CN113160514B (en) | 2020-01-22 | 2020-01-22 | Air duct type smoke sensing system |
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