CN214955254U - False alarm prevention smoke detector - Google Patents

Abstract

The utility model provides a prevent misreport smoke detector, including shell, temperature detecting head and pilot lamp, be equipped with control module in the shell and respectively with smoke detection module, temperature detection module, audible-visual alarm module and the wireless communication module that control module connects, the shell includes fixed part and convex part, and the surface of connecting between fixed part and the convex part is the cambered surface, and the one side that the fixed part is connected with the convex part and convex part are equipped with the smog import all around, and the convex part top is equipped with the shrinkage pool and passes the temperature detecting head, and the fixed part is equipped with the shrinkage pool in the convex part smog import department all around and passes the temperature detecting head equally. The utility model discloses a smoke detector that integrated smog was surveyed and temperature detects has improved the speed and the sensitivity of surveying, has reduced the wrong report alert of detector.

Description

False alarm prevention smoke detector

Technical Field

The utility model relates to a smoke detector technical field, in particular to prevent misreport smoke detector.

Background

The smoke detector is one of important devices for fire detection and alarm, and is widely applied to important fire-proof places such as families, factories, office buildings, hospitals, schools, museums and the like. The infrared scattering principle is mainly utilized to detect smoke generated when a fire disaster occurs, smoke particles enter a labyrinth of the detector to enable infrared light emitted by the emitting tube to be scattered, the intensity of the scattered infrared light and the smoke concentration have a certain linear relation, and a main control chip of the detector judges the variable quantities to determine whether the fire disaster occurs.

In the site environment, often because of temperature fluctuation, reasons such as circulation of air and climate change cause the wrong report of smoke detector to be alert, generally can set up thermodetector, utilize smog concentration and the dual detection of temperature to judge whether this region has the conflagration to take place, still can have the condition of wrong report alert because the temperature detects and smog concentration detects asynchronous, and sometimes because the position that smoke detector set up is wide inadequately causes the inaccurate of smog detection delay and temperature detection, and then cause the warning to delay or the wrong report of police appears.

SUMMERY OF THE UTILITY MODEL

The utility model provides a prevent mistake and report smoke detector surveys and integrates in a detection device smog, and the detector is provided with the even first smog import of a plurality of distributions and second smog import in different positions to and set up the temperature detecting head on second smog import and detector top, temperature and the smog situation that can the omnidirectional survey surrounding environment, improved the sensitivity of surveying, reduced the mistake report of detector.

The utility model provides a prevent misreport smoke detector, including shell, temperature detecting head and pilot lamp, the shell includes fixed part and convex part, the convex part is in one side of relative fixed connection, the fixed part is equipped with evenly distributed's first smog import towards convex part one side on the surface, the convex part outside is equipped with evenly distributed second smog import, and the top is equipped with first shrinkage pool, the temperature detecting head prolongs from the shrinkage pool and stretches out, the inside control module that is equipped with of shell and respectively with smog detection module, temperature detection module, audible-visual alarm module and the wireless communication module that control module connects.

Furthermore, one side of the fixing part, which is connected with the convex part, is a convex cambered surface, the slope of the cambered surface is uniform, and the convex part in the middle is of a descending structure with a middle height and a lower periphery.

The even cambered surface structure that high all around is low in the centre makes the setting bigger to the contact surface of outside at the first smog import of fixed part surface, makes the second smog import that is located the convex part outside simultaneously still can be sensitive contact the smog in the environment under the great circumstances of air flow.

Furthermore, a second concave hole is formed in the position, close to the second smoke inlet, of the fixing portion, and a temperature detecting head extending outwards is arranged at the position of the second concave hole.

The smog that produces when the conflagration takes place has higher temperature, and the change of the whole temperature of environment needs certain time, and the temperature sensor who sets up in second smog import department can detect smog in a certain import department, detects the temperature, the degree of accuracy of all-round improvement detector.

Furthermore, the sound and light alarm module comprises an indicator light alarm module, a buzzer alarm module and a buzzer alarm boosting module.

The audible alarm that utilizes bee calling organ to carry out is different from the alarm of general environment, if the conflagration breaks out, and the scene environment is unusual chaotic mostly, needs to make the warning sound that bee calling organ sent high enough have the penetrability, sets up bee calling organ and reports to the police the module and makes bee calling organ report to the police and reach the regulation standard.

Furthermore, the temperature detection module is composed of an NTC temperature sensor, a plurality of resistors and a plurality of capacitors.

Furthermore, a smoke cavity fault alarm module is further arranged inside the smoke detector shell and is respectively connected with the control module and the smoke detection module.

The smoke cavity alarm module is used for detecting whether the smoke detection module is abnormal or not.

The utility model has the advantages as follows:

1. the smoke detector is equipped with fixed part and convex part, and the cambered surface of face for even evagination is connected with the convex part to the fixed part, and all is equipped with the smog import on the cambered surface and the convex part outside, has improved the omnidirectionality of smog detection for the smoke detector sets up under the environment that has the limitation, and the circulation in the face of the air can be better survey smog.

2. The smoke detection module and the temperature detection module are integrated in the smoke detector, so that the smoke detection and the temperature detection are synchronous, the double detection of smoke and temperature is utilized, and the condition of false alarm of the detector caused by external environment change is reduced.

3. The temperature detect probe setting of detector is at second smog export and convex part top, and the temperature detect probe that the top set up can realize omnidirectional temperature detection when local temperature changes appears, makes temperature detection rapider, and to installing the detector that has the confined space, the temperature detect probe that smog exit set up can detect smog temperature, compensaties the delay of local temperature promotion in temperature detection response.

Drawings

FIG. 1 is a schematic view of the overall structure of the device of the present invention;

FIG. 2 is a schematic view of the fixing portion and the convex portion of the device according to the present invention;

FIG. 3 is a schematic circuit diagram of the control module of the present invention;

fig. 4 is a schematic circuit diagram of the smoke detection module of the present invention;

FIG. 5 is a schematic circuit diagram of the temperature detection module of the present invention;

FIG. 6 is a schematic circuit diagram of the buzzer alarm module and the buzzer alarm boosting module of the present invention;

fig. 7 is a circuit schematic diagram of the NB-IoT communication module of the present invention.

Reference numerals: 1-shell, 2-fixed part, 3-convex part, 4-first smoke inlet, 5-second smoke inlet, 6-first concave hole, 7-second concave hole, 8-temperature probe and 9-indicator light.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model provides a prevent reporting by mistake smoke detector, as shown in fig. 1, the detector includes shell 1, temperature detecting head 8 and pilot lamp 9, wherein shell 1 divide into fixed part 2 and convex part 3, fixed part 2 one side is generally through the bolt fastening at the room top, makes convex part 3 is towards ground, fixed part 2 is equipped with evenly distributed's first smog import 4 on the surface towards convex part 3 one side, the convex part 3 outside is equipped with evenly distributed second smog import 5, and the top of convex part 3 is equipped with first shrinkage pool 6, the size of shrinkage pool 6 can make temperature detecting head 8 extend out from the shrinkage pool, in this embodiment, first smog import 4 encircles a week in the convex part outside, second smog import 5 is equipped with three groups, and the angle between adjacent sets up according to 60 degrees distribution;

the detector still can set up a plurality of second shrinkage pools 7 on encircleing the fixed part surface in the second smog import 5 outside, second shrinkage pool 7 is the same with first shrinkage pool 6 shape size, can hold the temperature-detecting head and pass, extends to the detector outside.

As shown in fig. 2, the connection surface between the fixing portion 2 and the convex portion 3 is an arc surface, and the whole body is a trend of smoothly descending from the central convex portion to the periphery, so that the outside of the second smoke inlet 5 is completely opened, and when a fire disaster occurs, air circulates upwards due to temperature rise, and when air flows, the generated smoke can be driven to enter the second smoke inlet, the detection speed is improved, meanwhile, the surface area and the opening angle of the first smoke interface are increased, and when the detector is arranged on a wall body with shielding, the smoke in the environment can be better detected.

The smoke alarm is characterized in that a control module, a smoke detection module, a temperature detection module, an audible and visual alarm module and a wireless communication module are arranged in the shell 1, and the smoke detection module, the temperature detection module, the audible and visual alarm module and the wireless communication module are respectively connected with the control module.

As shown in fig. 3, the control module adopts STM8L151K4T6 as the minimum system of the single chip microcomputer formed by the main control chip, in this embodiment, the PA4 pin and the PA5 pin of the main control chip are respectively connected to the LED lamp and the resistor to form the light alarm module, the pin PB1 is connected to the button K1 ground and to a pull-up resistor R7 to be connected to the BAT power supply to form the test button module, and the BAT terminal is the voltage stabilization power supply terminal provided by the minimum system voltage stabilization module.

A PD5 pin of the main control chip is connected with the temperature detection module;

as shown in fig. 5, in the present embodiment, the temperature detection module employs an NTC temperature detection sensor, pins of the NTC temperature detection sensor are respectively connected to resistors R22 and R25, the other ends of the resistors R22 and R25 are connected to pins PD5, and are respectively connected to capacitors C24 and C27R, and the other ends of the capacitors C24 and C27 are grounded.

A PB0 pin is connected with a smoke cavity fault alarm module, and PB3 and PC6 pins are connected with a smoke detection module;

as shown in fig. 4, in the present embodiment, an SM100 is used to obtain smoke detection data, a pin PB3 of a main control chip is connected to a collector of a Q1 triode and a pull-up resistor R3, a base of the triode Q1 is connected to resistors R4 and R5, the other end of the resistor R5 is grounded, the other end of the resistor R4 is connected to a capacitor C6 and an IO pin of the SM100, and the other end of the resistor C6 is grounded; the VDD end of the SM100 is connected with the drain electrode of an MOS tube Q3 and is connected with the FEED end of the SM100 through a resistor R1, the grid electrode of the MOS tube is connected with a resistor R27, the other end of the resistor R27 is connected with the PC6 pin of the main control chip, the source electrode of the MOS tube is connected with a BAT power supply end, and a resistor R26 is connected between the grid electrode and the source electrode; the smoke cavity fault alarm module comprises a triode Q2, resistors R8, R12 and a capacitor C12, wherein a collector of the triode Q2 is connected with pins of a resistor R8 and a resistor PB0, a base of the triode Q2 is connected with a resistor R12, a capacitor C12 and a resistor R2, the resistor R12 and the capacitor C12 are grounded, and the resistor R2 is connected to an HB end of the SM 100.

The smoke detector generally sets a plurality of conditions for monitoring a plurality of areas, and utilizes the wireless communication module to wirelessly send alarm information and detection information to a monitoring place. In this embodiment, the wireless communication module is an NB-IoT communication module, and as shown in fig. 7, the NB-IoT communication module includes an NB-IoT communication chip, an SIM card socket, and a plurality of capacitors and resistors; the VDD power supply end, the CLK clock end and the RST end of the SIM card holder are respectively connected with corresponding pins of the NB-IoT communication chip through pull-up resistors, and the pins of the PC2, the PC3 and the PC5 of the main control chip are connected with corresponding pins of the NB-IoT communication module chip, so that the wireless communication of data is realized.

As shown in fig. 6, a voltage output terminal HV of the buzzer alarm boosting module is connected to an anode of a buzzer in the buzzer alarm module and is connected to a cathode of the buzzer through an inductor L1 and a diode D2, the cathode of the buzzer is connected to a PD2 pin of the main control chip through a triode T1 and a resistor R9, a voltage controller of the buzzer alarm boosting module adopts TPS61040DBVR, an EN terminal is connected to a PD1 pin of the main control chip, a VIN terminal is connected to a BAT power supply terminal, and is also connected in parallel to a C13 and a C14 grounded capacitor, the VIN terminal and the SW terminal are connected to the inductor L2, the SW terminal and the FB terminal are connected in series to a diode D3 and are connected in parallel to a capacitor C16 and a resistor R15, and a resistor R19, a polar capacitor C15 and a capacitor C17 are also connected in series between the FB terminal and the diode D3, wherein the C15 and the C17 are connected in parallel.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or direct or indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims (6)

1. The utility model provides a prevent misreport smoke detector, its characterized in that, the detector includes shell, temperature-sensing head and pilot lamp, the shell includes fixed part and convex part, the convex part is in relative fixed connection's one side, the fixed part is equipped with evenly distributed's first smog import towards convex part one side on the surface, the convex part outside is equipped with evenly distributed second smog import, and the top is equipped with first shrinkage pool, the temperature-sensing head prolongs from the shrinkage pool and stretches out, the shell inside be equipped with control module and respectively with smog detection module, temperature detection module, audible-visual alarm module and the wireless communication module that control module connects.

2. The false alarm prevention smoke detector of claim 1, wherein the side of the fixing part connected with the convex part is a convex cambered surface, the slope of the cambered surface is uniform, and the convex part in the middle is in a descending structure with a middle height and a lower periphery.

3. The false alarm smoke detector of claim 2, wherein a second recess is provided in the stationary portion adjacent the second smoke inlet, and wherein an outwardly extending temperature probe is provided in the second recess.

4. The false alarm prevention smoke detector according to any one of claims 1-3, wherein the sound and light alarm module comprises an indicator light alarm module, a buzzer alarm module and a buzzer alarm boosting module.

5. The false alarm prevention smoke detector according to any one of claims 1-3, wherein the temperature detection module is composed of an NTC temperature sensor and a plurality of resistors and capacitors.

6. The false alarm prevention smoke detector according to any one of claims 1-3, wherein a smoke cavity fault alarm module is further arranged inside the smoke detector shell and is respectively connected with the control module and the smoke detection module.

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