CN209928568U

CN209928568U - Smoke detector based on temperature sensing and CO detection functions

Info

Publication number: CN209928568U
Application number: CN201920537074.7U
Authority: CN
Inventors: 牛小民; 武传伟; 金鑫; 李永财; 王帅宇; 陶超
Original assignee: Hanwei Electronics Group Corp
Current assignee: Hanwei Electronics Group Corp
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-01-10
Anticipated expiration: 2029-04-19

Abstract

The utility model provides a smoke detector based on temperature sensing and CO detection functions, which comprises a smoke detector, a CO gas sensor module, a temperature detection module and a data processing module which are arranged in the labyrinth of the smoke detector, wherein the CO gas sensor module, the temperature detection module and the alarm device are electrically connected with the data processing module; and when the smoke detector detects that the temperature, the CO gas concentration and the smoke all reach the alarm limit, the alarm device starts to alarm. The utility model discloses an add inside temperature detection module, CO gas sensor module and the data processing device of establishing of smoke detector, at the initial stage that the conflagration took place, temperature and CO content in the air all can change, through three indexs of simultaneously detecting indoor temperature, CO gas and smog, these three indexs all reach the warning limit in the environment, open buzzing alarm and pilot lamp. The response performance of the smoke detector is improved, and the false alarm rate is reduced.

Description

Smoke detector based on temperature sensing and CO detection functions

Technical Field

The utility model belongs to the technical field of fire control conflagration is surveyed, specific theory has related to a smoke detector based on sense warm CO detects function.

Background

At present, the working principle of common smoke detectors in the market mostly adopts the infrared light scattering principle. The optical darkroom of the smoke detector is designed into a (labyrinth) shell with a special structure based on the principles of optical geometry and air duct hydrodynamics, and can shield the direct radiation of external light and simultaneously enable the smoke to be measured to enter the labyrinth along with air flow. When an infrared light signal sent by a transmitting tube of the detector meets smoke particles, infrared light scattering occurs, scattered light beams are received by a receiver of the detector, and along with the difference of the smoke concentration in the detector, the current received by the receiver is also different. After the current signal is subjected to signal amplification and analog-to-digital conversion, the data is analyzed and calculated through the data processing device, and then the smoke state is judged, so that the purpose of detecting the environmental smoke is achieved.

However, the conventional smoke detector has three problems: 1. the environment often contains infrared light components, which can cause serious interference to the analysis and judgment of the infrared signal of the smoke detector, so that the detector can not work normally; 2. when the sensitivity of the smoke detector is improved, the detector can clearly sense weak smoke, moisture, dust and other phenomena in the environment and send out an alarm signal, so that the phenomenon of false alarm is caused; 3. the sensitivity of part of smoke detectors is reduced by adopting a compensation mode of an additional temperature sensor, but when the temperature of black smoke in the environment is low and the temperature difference is too small and cannot reach the temperature detection set value of the temperature sensor, the smoke detectors cannot realize effective alarm, and the external environment temperature except the black smoke can also influence the temperature sensor, so that the false alarm phenomenon is caused.

In order to solve the above problems, people are always seeking an ideal technical solution.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the not enough of prior art to a smoke detector based on temperature sensing and CO detect function is provided.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a smoke detector based on temperature sensing and CO detection functions comprises a smoke detector, a CO gas sensor module, a temperature detection module, a data processing module and an alarm device, wherein the CO gas sensor module, the temperature detection module, the data processing module and the alarm device are arranged in a labyrinth of the smoke detector; and when the smoke detector detects that the temperature, the CO gas concentration and the smoke all reach the alarm limit, the alarm device starts to alarm.

The utility model discloses relative prior art has substantive characteristics and progress, specific theory, the utility model discloses an add inside temperature detection module, CO gas sensor module and the data processing device of establishing of smoke detector, at the initial stage that the conflagration took place, temperature and CO content in the air all can change, through three indexs of simultaneously detecting indoor temperature, CO gas and smog, these three indexs all reach the warning limit in the environment, open buzzing alarm and pilot lamp. The response performance of the smoke detector is improved, and the false alarm rate is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the smoke detector of the present invention.

Fig. 2 is a schematic view of the partial structure of the smoke detector of the present invention.

In the figure: 1. a launch tube; 2. a launch tube; 3. a receiving tube; 4. a temperature detection module; 5. and a CO gas sensor module.

Detailed Description

The technical solution of the present invention will be described in further detail through the following embodiments.

As shown in fig. 1 and 2, a smoke detector based on temperature sensing and CO detection functions comprises a smoke detector, a CO gas sensor module, a temperature detection module, a data processing module and an alarm device, wherein the CO gas sensor module, the temperature detection module and the alarm device are arranged in a labyrinth of the smoke detector, and the CO gas sensor module, the temperature detection module and the alarm device are electrically connected with the data processing module; and when the smoke detector detects that the temperature, the CO gas concentration and the smoke all reach the alarm limit, the alarm device starts to alarm.

The detection chamber of the smoke detector is in a labyrinth type and comprises a labyrinth base and a labyrinth cover; a forward scattering light path and a backward scattering light path which are composed of two transmitting

tubes

1 and 2 and a receiving tube group 3 are arranged in the labyrinth, wherein the included angle formed by the central optical axis of the transmitting tube 1 and the central optical axis of the receiving tube 3 of the forward scattering light path is 120^oThe included angle formed by the central optical axis of the transmitting tube 2 and the central optical axis of the receiving tube 3 of the back scattering optical path is 60^o. The transmitting

tubes

1 and 2 are infrared transmitting tubes, and the wavelength range of light beams emitted by the

infrared transmitting tubes

1 and 2 is 850 nm-940 nm. The receiving tube 3 is an infrared receiving tube, and the wavelength range of the light beams received by the infrared receiving tube 3 is 850 nm-940 nm.

Specifically, the data processing device adopts an MSP430 ultra-low power consumption induction and measurement MCU singlechip data analysis and control system produced by Texas Instruments. The temperature detection module 4 adopts an MF11 compensation type NTC thermistor temperature-sensing detector produced by Nanjing Hezem constant electronics, and the temperature-sensing detector automatically detects the temperature change in the surrounding environment. When the temperature reaches the alarm value or the temperature jump meets the requirement, the detector starts acousto-optic alarm, starts the output of the relay, transmits the measured temperature information to the data processing device through the temperature sensing device, and judges the temperature change in the measured environment. CO gas sensor module 5 adopts general type, the miniaturized ZE16-CO type electrochemistry CO module of weisheng scientific and technological production, detects the diffusion and gets into the CO gas concentration of sensor, and then judges the change of CO gas concentration in the environment. The detection chamber of the smoke detector adopts a labyrinth structure of a YB010 independent type smoke detector produced by Hanwei technology group.

By detecting CO gas, temperature and smoke in the environment at the same time, whether a fire disaster is formed or not is accurately judged, the response performance of the smoke detector is improved, and the false alarm rate is reduced. And when the smoke detector detects that the temperature, the CO gas concentration and the smoke all reach the alarm limit, the alarm device starts acousto-optic alarm.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. The utility model provides a smoke detector based on temperature sensing and CO detect function, includes smoke detector, its characterized in that: the smoke detector comprises a smoke detector labyrinth, and is characterized by further comprising a CO gas sensor module, a temperature detection module, a data processing module and an alarm device which are arranged in the smoke detector labyrinth, wherein the CO gas sensor module, the temperature detection module and the alarm device are electrically connected with the data processing module; and when the smoke detector detects that the temperature, the CO gas concentration and the smoke all reach the alarm limit, the alarm device starts to alarm.

2. The smoke detector based on temperature sensing and CO detection functions of claim 1, wherein: the temperature detection module adopts a common temperature sensing sensor and transmits the measured temperature information to the data processing module.

3. The smoke detector based on temperature sensing and CO detection functions of claim 1, wherein: the CO gas sensor module adopts an electrochemical CO gas sensor, and the CO gas sensor module collects the concentration information of CO gas in the air and transmits the information to the data processing module.

4. The smoke detector based on temperature sensing and CO detection functions of claim 1, wherein: the alarm device is a buzzer and an alarm indicator lamp.

5. The smoke detector based on temperature sensing and CO detection functions of claim 1, wherein: the smoke detector comprises a forward scattering light path and a backward scattering light path which are arranged in a labyrinth and composed of two transmitting tubes and a receiving tube, wherein the included angle formed by the central optical axis of the transmitting tube and the central optical axis of the receiving tube of the forward scattering light path is 120^oThe included angle formed by the central optical axis of the transmitting tube and the central optical axis of the receiving tube of the back scattering optical path is 60^o。

6. The smoke detector based on temperature sensing and CO detection functions of claim 5, wherein: the transmitting tube is an infrared transmitting tube, and the wavelength range of light beams emitted by the infrared transmitting tube is 850-940 nm.

7. The smoke detector based on temperature sensing and CO detection functions of claim 6, wherein: the receiving tube is an infrared receiving tube, and the wavelength range of light beams received by the infrared receiving tube is 850 nm-940 nm.