CN106652312A - Working method of kitchen safety detection system employing digital logic circuit - Google Patents
Working method of kitchen safety detection system employing digital logic circuit Download PDFInfo
- Publication number
- CN106652312A CN106652312A CN201611108674.9A CN201611108674A CN106652312A CN 106652312 A CN106652312 A CN 106652312A CN 201611108674 A CN201611108674 A CN 201611108674A CN 106652312 A CN106652312 A CN 106652312A
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- Prior art keywords
- input
- gas concentration
- sensor
- kitchen
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Classifications
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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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/183—Single detectors using dual technologies
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Chemical & Material Sciences (AREA)
- Emergency Management (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Computer Security & Cryptography (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Fire-Detection Mechanisms (AREA)
- Emergency Alarm Devices (AREA)
- Fire Alarms (AREA)
Abstract
The invention discloses a working method of a kitchen safety detection system employing a digital logic circuit, and the system comprises a controller, a gas concentration sensor, a smoke sensor and an alarm, wherein the gas concentration sensor, the smoke sensor and the alarm are respectively connected with the controller. The gas concentration sensor and the smoke sensor are respectively used for detecting the concentrations of gas and smoke in a kitchen, and transmitting the detection data to the controller. The controller judges whether to start the alarm or not according to the detection data. The system can carry out the effective prevention and alarm against kitchen fire, and is higher in reliability.
Description
Technical field
The invention belongs to detection technique field, more particularly to a kind of detecting system for improving kitchen safety in utilization.
Background technology
Increasingly serious with food problems, many people start to select oneself to be in cook, and kitchen is that people are commonly used
Place, more because kitchen is high using the frequency of coal gas, naked light, becoming be easiest in family where generation fire, for right
The consideration of safety, there is at present a variety of products for fire disasters protection, such as Chinese Patent Application No. 201320338550.5, title
" a kind of kitchen air quality detecting and controlling system " detects imflammable gas in air and poisonous by adopting gas sensor
Evil gas concentration, and judge whether to ventilation；For another example " a kind of band is warm for Chinese Patent Application No. 201320004363.3, title
Degree detector and alarm backstairs " by arrange temperature-detecting device, using occur fire when temperature can elevated principle,
The triggering when kitchen temperature reaches uniform temperature is reported to the police, and reminds people to note.
Carefully analyze and be not difficult to find out, aforementioned two pieces application can not comprehensively be taken precautions against when there is fire, for the
For one application, even if the imflammable gas concentration in air is less, if there is naked light etc., it is also possible to cause fire, and
Now the system can not realize monitoring well；For second application, when being cooked using combustion gas, the temperature in kitchen
Natively can raise, particularly during the broiling summer, the temperature in kitchen closed when divulging information not smooth is even more very high, thus it is simple according to
Judge whether fire by temperature, it is easy to cause false alarm.
Analyze by more than, existing kitchen safety detecting system can not well realize preferable effect, need to be changed
Enter.
The content of the invention
The main object of the present invention, is to provide a kind of kitchen safety detecting system, and it can be carried out effectively to cooking fire
Strick precaution and warning, reliability is higher.
The secondary objective of the present invention, is to provide a kind of kitchen safety detecting system, and its simple structure, service behaviour is steady
It is fixed.
In order to reach above-mentioned purpose, the solution of the present invention is：
A kind of kitchen safety detecting system, including controller and be attached thereto respectively gas concentration sensor, smog sensing
Device and alarm, the gas concentration sensor and Smoke Sensor detect respectively gas concentration and smokescope in kitchen,
And the data for detecting are sent into controller, the controller judges whether to start alarm according to aforementioned data.
Controller noted above includes decision circuitry and control circuit, and the decision circuitry includes four comparators, one and doors
OR gate is input into one three, first and second comparator stores respectively gas concentration maximum and smokescope maximum, the
3rd, four comparators store respectively gas concentration safety value and smokescope safety value, the input connection of the first comparator
Gas concentration sensor, output end connection three is input into the first input end of OR gate；The input connection smog of the second comparator is passed
Sensor, output end connection three is input into the second input of OR gate；The input of third and fourth comparator connects respectively gas concentration biography
Sensor and Smoke Sensor, and output end connects respectively two inputs with door, it is described to be connected three inputs with the output end of door
3rd input of OR gate, the output end of three input OR gates connects the input of control circuit, and the output end of control circuit connects
Device taking alarm.
Above-mentioned comparator adopts LM324.
Above-mentioned gas concentration sensor adopts semiconductor-type gas sensor.
Above-mentioned Smoke Sensor adopts ion type smog sensor.
Above-mentioned alarm adopts buzzer.
After such scheme, the present invention gathers the combustable gas concentration in kitchen by arranging Smoke Sensor, not only,
Comprehensive descision is carried out herein in connection with smokescope, it is contemplated that the potential safety hazard of various presence, exclude the possibility that fire occurs, safety
Performance is higher.
In addition, the present invention completes the comparison between each detection data and preset value also by simple Digital Logical Circuits,
And by the comprehensive analysis of various comparative results, the control criterion to alarm is realized, circuit connection is simple, job stability
It is good.
Description of the drawings
Fig. 1 is the integrated stand composition of the present invention；
Fig. 2 is that decision circuitry realizes circuit diagram in the present invention.
Specific embodiment
Below with reference to accompanying drawing, technical scheme is described in detail.
As shown in figure 1, the present invention provides a kind of kitchen safety detecting system, including controller, gas concentration sensor, cigarette
Mist sensor and alarm, introduce separately below.
The gas concentration sensor can adopt semiconductor-type gas sensor, be arranged in kitchen, and it is according to by gold
Category oxide or detecting element made by metal semiconductor oxide material, can be used to detect the fuel gas of percent concentration,
With simple structure, detection sensitivity is high, reaction speed is fast the characteristics of；In the gas concentration sensor real-time detection kitchen
Combustable gas concentration, and send into controller.
The Smoke Sensor can adopt ion type smog sensor, and its sensing to small smoke particle is very clever
It is quick；The Smoke Sensor be connected in the kitchen with controller, smokescope that can be in real-time detection kitchen, and will detect
The data for arriving send into controller.
The controller receives respectively the gas concentration data of These gases concentration sensor detection and Smoke Sensor inspection
The smokescope data of survey, and respectively the data and preset value be compared into analysis, judge whether to need startup alarm,
Specifically judge that principle is, be respectively directed to gas concentration and smokescope arranges maximum and safety value, by judging detection
The size of data and each preset value, so as to draw control command, wherein, the maximum of each concentration is higher than safety value, if detection number
According to higher than maximum, expression has reached harmful grade, it is necessary to report to the police, if detection data is less than safety value, then it represents that at kitchen
In safe condition, and if detection data needs to combine other detection data comprehensive descision danger between maximum and safety value
Dangerous situation.
In the present embodiment, controller includes decision circuitry and control circuit, with reference to shown in Fig. 2, the decision circuitry bag
Four comparator D1-D4, one and door D5 and one three input OR gate D6 are included, wherein, the reference value of first comparator D1 is arranged
For gas concentration maximum, its input connects the output end of gas concentration sensor, and the input of the output end of D1 connection three or
The first input end of door D6；The reference value of the second comparator D2 is set to smokescope maximum, and its input connection smog is passed
The output end of sensor, and the output end of D2 connection three is input into second input of OR gate D6；The reference value of the 3rd comparator D3 sets
Gas concentration safety value is set to, its input connects the output end of gas concentration sensor, and the output end of D3 connects and door D5
An input；The reference value of the 4th comparator D4 is set to smokescope safety value, its input connection Smoke Sensor
Output end, and the connection of the output end of D4 and another input of door D5；The output end with door D5 be connected three input or
3rd input of door D6, the output ends of three input OR gate D6 then connect the input of control circuit, and the output of control circuit
End connection alarm, if control circuit receives high level, starts alarm, if control circuit receives low level, no
Start alarm.Wherein, comparator can adopt LM324.
With reference to Fig. 2, its truth table is as shown in table 1, wherein, respectively corresponding output signal is represented with D1-D6.
Table 1
As can be seen from Table 1, as long as gas concentration is higher than its corresponding maximum with any one detection data of smokescope,
Decision circuitry will start alarm to control circuit output high level；And if any one detection data between maximum with
Between safety value, then the comparative result for combining another detection data is needed, if both of which (can between maximum and safety value
Combustion gas bulk concentration is higher, and smog is larger), still judge fire, start and report to the police；If another detection data is less than safety
Value, the expression gas concentration for causing that is now possibly due to cook is raised or oil smoke is larger so that detected status are more comprehensive.
In the present embodiment, alarm adopts buzzer.
To sum up, a kind of kitchen safety detecting system of the invention, by arranging two reference values of maximum and safety value, compares
Existing structure, the factor for not only considering is more comprehensive, and with more preferable preventing function, reliability is more preferably.
Above example technological thought only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is every
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, the scope of the present invention is each fallen within
Within.
Claims (1)
1. a kind of method of work of kitchen safety detecting system, kitchen safety detecting system includes controller and connects therewith respectively
Gas concentration sensor, Smoke Sensor and the alarm for connecing, described method of work, including：The gas concentration sensor
Detect the gas concentration and smokescope in kitchen respectively with Smoke Sensor, and the data for detecting are sent into controller, institute
State controller to be judged whether to start alarm according to aforementioned data；
It is characterized in that：The controller includes decision circuitry and control circuit, the decision circuitry include four comparators, one
Individual to be input into OR gate with door and one three, first and second comparator stores respectively gas concentration maximum and smokescope is maximum
Value, third and fourth comparator stores respectively gas concentration safety value and smokescope safety value, the input of the first comparator
Connection gas concentration sensor, output end connection three is input into the first input end of OR gate；The input connection cigarette of the second comparator
Mist sensor, output end connection three is input into the second input of OR gate；It is dense that the input of third and fourth comparator connects respectively gas
Degree sensor and Smoke Sensor, and output end connects respectively two inputs with door, it is described to be connected three with the output end of door
3rd input of input OR gate, the input of the output end connection control circuit of three input OR gates, and the output of control circuit
End connection alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611108674.9A CN106652312A (en) | 2014-10-30 | 2014-10-30 | Working method of kitchen safety detection system employing digital logic circuit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611108674.9A CN106652312A (en) | 2014-10-30 | 2014-10-30 | Working method of kitchen safety detection system employing digital logic circuit |
| CN201410598193.5A CN104346894A (en) | 2014-10-30 | 2014-10-30 | Kitchen safety detecting system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410598193.5A Division CN104346894A (en) | 2014-10-30 | 2014-10-30 | Kitchen safety detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106652312A true CN106652312A (en) | 2017-05-10 |
Family
ID=52502413
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410598193.5A Pending CN104346894A (en) | 2014-10-30 | 2014-10-30 | Kitchen safety detecting system |
| CN201611108672.XA Withdrawn CN106652311A (en) | 2014-10-30 | 2014-10-30 | Kitchen safety detection system employing digital logic circuit |
| CN201611108674.9A Withdrawn CN106652312A (en) | 2014-10-30 | 2014-10-30 | Working method of kitchen safety detection system employing digital logic circuit |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410598193.5A Pending CN104346894A (en) | 2014-10-30 | 2014-10-30 | Kitchen safety detecting system |
| CN201611108672.XA Withdrawn CN106652311A (en) | 2014-10-30 | 2014-10-30 | Kitchen safety detection system employing digital logic circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN104346894A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105354973A (en) * | 2015-10-26 | 2016-02-24 | 珠海格力电器股份有限公司 | Circuit board autonomous fire prevention method and system, circuit board and electronic device |
| CN108922126B (en) * | 2018-07-06 | 2020-11-03 | 四川长虹电器股份有限公司 | Natural gas leakage alarm system and alarm method |
| CN112435434A (en) * | 2020-11-20 | 2021-03-02 | 广东电网有限责任公司 | Smoke alarm device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045869U (en) * | 1988-07-06 | 1989-10-11 | 施天禄 | Automatic surveying, alarming and fire-extinguishing device for fire in room |
| US5376924A (en) * | 1991-09-26 | 1994-12-27 | Hochiki Corporation | Fire sensor |
| CN2386496Y (en) * | 1999-08-17 | 2000-07-05 | 纪连勇 | Domestic gas safety monitor unit |
| EP1579398B1 (en) * | 2000-08-11 | 2008-07-16 | Walter Kidde Portable Equipment, Inc. | Microprocessor-based combination smoke and carbon monoxide detector having intelligent hush feature |
| CN101765867A (en) * | 2007-03-02 | 2010-06-30 | 沃尔特基德轻便装置公司 | Alarm with carbon monoxide and smoke sensor |
| CN203894915U (en) * | 2014-06-10 | 2014-10-22 | 杭州谱尔新能源科技有限公司 | Combustion gas leakage alarm system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5945924A (en) * | 1996-01-29 | 1999-08-31 | Marman; Douglas H. | Fire and smoke detection and control system |
| JP3325526B2 (en) * | 1998-10-28 | 2002-09-17 | 東京瓦斯株式会社 | Alarm |
| CN201232854Y (en) * | 2008-06-24 | 2009-05-06 | 徐州工程学院 | Household fuel gas leakage multiaspect control device |
| CN203204771U (en) * | 2013-01-30 | 2013-09-18 | 丰唐物联技术（深圳）有限公司 | Household intelligent alarm |
| CN203232541U (en) * | 2013-04-24 | 2013-10-09 | 湖南科技大学 | Intelligent home furnishing security system based on universal server |
| CN103914942A (en) * | 2014-04-15 | 2014-07-09 | 北京百纳威尔科技有限公司 | Mobile terminal alarm method and device |
-
2014
- 2014-10-30 CN CN201410598193.5A patent/CN104346894A/en active Pending
- 2014-10-30 CN CN201611108672.XA patent/CN106652311A/en not_active Withdrawn
- 2014-10-30 CN CN201611108674.9A patent/CN106652312A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045869U (en) * | 1988-07-06 | 1989-10-11 | 施天禄 | Automatic surveying, alarming and fire-extinguishing device for fire in room |
| US5376924A (en) * | 1991-09-26 | 1994-12-27 | Hochiki Corporation | Fire sensor |
| CN2386496Y (en) * | 1999-08-17 | 2000-07-05 | 纪连勇 | Domestic gas safety monitor unit |
| EP1579398B1 (en) * | 2000-08-11 | 2008-07-16 | Walter Kidde Portable Equipment, Inc. | Microprocessor-based combination smoke and carbon monoxide detector having intelligent hush feature |
| CN101765867A (en) * | 2007-03-02 | 2010-06-30 | 沃尔特基德轻便装置公司 | Alarm with carbon monoxide and smoke sensor |
| CN203894915U (en) * | 2014-06-10 | 2014-10-22 | 杭州谱尔新能源科技有限公司 | Combustion gas leakage alarm system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106652311A (en) | 2017-05-10 |
| CN104346894A (en) | 2015-02-11 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170510 |