CN106205065A - Switching value alarm - Google Patents
Switching value alarm Download PDFInfo
- Publication number
- CN106205065A CN106205065A CN201610820024.0A CN201610820024A CN106205065A CN 106205065 A CN106205065 A CN 106205065A CN 201610820024 A CN201610820024 A CN 201610820024A CN 106205065 A CN106205065 A CN 106205065A
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- Prior art keywords
- resistance
- alarm
- conducting
- switching value
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000001514 detection method Methods 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 239000003034 coal gas Substances 0.000 abstract description 17
- 238000000034 method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000010411 cooking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Computer Security & Cryptography (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Emergency Alarm Devices (AREA)
Abstract
A kind of switching value alarm, including power supply, control circuit and the alarm device being controlled by described control circuit, control circuit includes detecting device, including gas sensor, for detecting the concentration of coal gas, and the concentration of coal gas is converted into voltage signal, output detections voltage；Standard apparatus, according to gas concentration alarm threshold value, it is provided that a reference voltage；Comparison means, including voltage comparator, couples with described detection device and standard apparatus respectively, output drive signal after detection voltage is more than reference voltage；Time set, couples with comparison means, accepts the driving signal output control signal of a Preset Time；After gas sensor detects that the concentration of coal gas exceedes concentration alarm threshold value, comparison means output drive signal, time set starts timing, after time set receives the driving signal of a Preset Time, control device and control alarm device warning, avoid the appearance of switching value alarm false alarm situation, increase the practicality of this switching value alarm.
Description
Technical field
The present invention relates to alarm device field, particularly to a kind of switching value alarm.
Background technology
In people live, coal gas has become one of most important fuel.But, owing to coal gas has danger, therefore
Generally it is required for when at home life uses using alarm that it is monitored, it is to avoid gas concentration is too high and the thing that causes
Therefore., present switching value alarm is generally used DC source, needs to be connected with power supply by power line, once lacks
Few power supply then cannot use, and problems brings inconvenience.
Notification number is the Chinese patent of CN202352026U, a kind of switching value alarm, mainly includes shell and warning
Device, alarm and gas sensor, battery composition warning circuit, warning circuit is arranged on enclosure；Install at shell rear surface
Sucker, end face is provided with link, and gas-permeable openings is offered in front, and is powered by battery, battery after civil power is not powered
Still can be powered to warning circuit, this kind of switching value alarm have rational in infrastructure, convenient and practical, be widely used etc. excellent
Point, but in actual use, this kind of switching value alarm easily occurs false alarm carrying out the detection of coal gas when, i.e.
Simply coal gas peak value is higher in instantaneous detecting, such as the cooking turn on the gas-fire stove in a flash, if abrupt release is out
Coal gas is not ignited, then can blow out, and switching value alarm arises that false alarm after the coal gas that moment blows out being detected.
Summary of the invention
It is an object of the invention to provide a kind of switching value alarm, it is possible to be monitored coal gas reporting to the police, and can disappear
Situation except false alarm.
The above-mentioned purpose of the present invention has the technical scheme that
A kind of switching value alarm, including power supply, control circuit and the alarm device being controlled by described control circuit, institute
The control circuit stated includes detecting device, including gas sensor, for detecting the concentration of coal gas, and the concentration of coal gas is changed
Become voltage signal, output detections voltage；Standard apparatus, according to gas concentration alarm threshold value, it is provided that a reference voltage；Relatively dress
Put, including voltage comparator, couple with described detection device and standard apparatus respectively, after detection voltage is more than reference voltage
Output drive signal；Time set, couples with described comparison means, and the driving signal output accepting a Preset Time controls letter
Number；Control device, be controlled by described control signal control alarm device and report to the police.
By using technique scheme, after gas sensor detects that the concentration of coal gas exceedes concentration alarm threshold value, than
Relatively device output drive signal, time set starts timing, after time set receives the driving signal of a Preset Time, controls
Device controls alarm device and reports to the police, it is to avoid the appearance of switching value alarm false alarm situation, adds this switching value alarm
Practicality.
The present invention can be further arranged to, and described power supply is provided with testing circuit, and described testing circuit includes
First conducting device, the second conducting device, adjusting means and instruction device, adjusting means can set one to power supply and make a reservation for
Value, when power supply controls the second conducting device open circuit less than adjusting means after this predetermined value, the second conducting device controls the
One conducting device open circuit, the first conducting device controls instruction device and quits work.
By using technique scheme, testing circuit can detect the residual circuit of power supply, when power supply
Residual circuit is less than after predetermined value, and instruction device quits work, and it just can be replaced by staff, and now power supply depends on
Old there is faint electricity and support switching value alarm work, it is to avoid power supply do not have staff after electricity ignorant and
Cause the problem that switching value alarm cannot normally work.
The present invention can be further arranged to, and described standard apparatus includes the first reference resistance, the second reference resistance and
Three reference resistances, described the first reference resistance, the second reference resistance and the 3rd reference resistance series connection ground connection, the first described base
Quasi-resistance couples described comparison means with the node of described second reference resistance.
By using technique scheme, the first reference resistance, the second reference resistance and the 3rd reference resistance pass through dividing potential drop
Reference voltage is provided for comparison means.
The present invention can be further arranged to, and described time set includes crystal oscillator, enumerator and depositor, and described crystal oscillator is used
In providing time moderate pulse, enumerator for counting and is deposited in depositor, and enumerator receives the control letter of a Preset Time
Output control signals to control device by the outfan of enumerator after number.
By using technique scheme, crystal oscillator, enumerator and depositor carry out counting storage, stablize and easily realize.
The present invention can be further arranged to, and described control device includes the first control resistance, the second control resistance and control
Audion processed, described first control resistance controls resistant series ground connection with described second, the first described control resistance with
The node of the second described control resistance couples the base stage of described control audion, and the described base stage controlling audion couples institute
State alarm device.
By using technique scheme, control resistance by first and the second control electric resistance partial pressure reaches to make control three pole
The purpose of pipe conducting, and then make the loop residing for alarm device turn on, report to the police.
The present invention can be further arranged to, and the first described conducting device includes the first conducting resistance, the first conducting three poles
Pipe and conducting electric capacity, the node that the first described conducting resistance couples with described conducting electric capacity couples power supply, described
Conducting electric capacity couples with the base stage of described first turn-on transistor, the first described conducting resistance and the described first conducting three poles
The colelctor electrode of pipe couples, the grounded emitter of the first described turn-on transistor.
By using technique scheme, by joining between the first conducting resistance, the first turn-on transistor and conducting electric capacity
Close dividing potential drop and reach to turn on the purpose of the second conducting device.
The present invention can be further arranged to, and the second described conducting device includes the second turn-on transistor and the second electric conduction
Resistance, the base stage of described second turn-on transistor couples described second conducting resistance, described second conducting resistance and described first
Conducting device couples, and the emitter stage of the second described turn-on transistor couples described power supply, the second described conducting three poles
The colelctor electrode of pipe couples described instruction device.
By using technique scheme, by the second turn-on transistor and the second conducting resistance, with the use of reaching control
The purpose that power supply processed is powered.
The present invention can be further arranged to, and described adjusting means includes the first regulation resistance and the second regulation resistance, institute
The the first regulation resistance stated and the described second regulation resistant series ground connection, the first described regulation resistance is led with described first
Exchange device couples.
By using technique scheme, carry out dividing potential drop by the first regulation resistance and the second regulation resistance and reach to set confession
The purpose of electricity power supply predetermined value.
The present invention can be further arranged to, and described instruction device includes the first display lamp and the protection electricity being arranged in series
Resistance.
By using technique scheme, the first display lamp can play the effect of instruction, and it can be entered by protective resistance
Row protection.
The present invention can be further arranged to, and described power supply, control circuit and alarm device are wholely set.
By using technique scheme, save the installation cost of switching value alarm, can be dense to the coal gas in region
Degree is monitored and reports to the police.
In sum, the method have the advantages that
After gas sensor detects that the concentration of coal gas exceedes concentration alarm threshold value, comparison means output drive signal, timing fills
Put beginning timing, after time set receives the driving signal of a Preset Time, control device and control alarm device warning, it is to avoid
The appearance of switching value alarm false alarm situation, adds the practicality of this switching value alarm, and testing circuit can detect
The residual circuit of power supply, after the residual circuit of power supply is less than predetermined value, instruction device quits work, staff
Just can be replaced it, now still there is faint electricity and support switching value alarm work in power supply, it is to avoid supplies
Electricity power supply there is no electricity after staff is ignorant and the problem that causes switching value alarm normally to work.
Accompanying drawing explanation
Fig. 1 is control circuit schematic diagram；
Fig. 2 is testing circuit schematic diagram；
Fig. 3 is switching value alarm front view.
In figure, 110, standard apparatus；120, detection device；130, comparison means；140, time set；150, dress is controlled
Put；160, alarm device；210, the first conducting device；220, the second conducting device；230, adjusting means；240, instruction device.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
A kind of switching value alarm, control circuit schematic diagram as shown in Figure 1, including power supply, control circuit and be subject to
Controlling the alarm device 160 in described control circuit, described control circuit includes detecting device 120, including gas sensor S1,
For detecting the concentration of coal gas, and the concentration of coal gas is converted into voltage signal, output detections voltage；Standard apparatus 110, according to
Gas concentration alarm threshold value a, it is provided that reference voltage；Comparison means 130, including voltage comparator, respectively with described detection dress
Put 120 and standard apparatus 110 couple, when detection voltage is more than output drive signal after reference voltage；Time set 140, with institute
The comparison means 130 stated couples, and accepts the driving signal output control signal of a Preset Time；Control device 150, be controlled by institute
State control signal control alarm device 160 to report to the police.
Standard apparatus 110 includes the first reference resistance R11, the second reference resistance R12 and the 3rd reference resistance R13, described
The first reference resistance R11, the second reference resistance R12 and the 3rd reference resistance R13 connect ground connection, the first described reference resistance
The node of R11 and described second reference resistance R12 couples described comparison means 130.
Time set 140 includes that crystal oscillator, enumerator and depositor, described crystal oscillator are used for providing time moderate pulse, counting
Device for counting and is deposited in depositor, and enumerator is exported by the outfan of enumerator after receiving the control signal of a Preset Time
Control signal to control device 150.
Control device 150 to include the first control resistance R14, second control resistance R15 and control audion Q3, described the
One controls resistance R14 controls resistance R15 with described second and connect ground connection, and described first controls resistance R14 and described the
Two nodes controlling resistance R15 couple the base stage of described control audion Q3, and the base stage of described control audion Q3 couples institute
State alarm device 160.
Alarm device 160 includes that the second display lamp L2 and speaker B, the second display lamp L2 and speaker B are arranged in parallel, the
Two display lamp L2 and speaker B couple described control device 150, and the second display lamp L2 is set to green.
Testing circuit schematic diagram as shown in Figure 2, testing circuit include first conducting device the 210, second conducting device 220,
Adjusting means 230 and instruction device 240, adjusting means 230 can set a predetermined value to power supply, when power supply is less than this
After individual predetermined value, adjusting means 230 controls the second conducting device 220 open circuit, and the second conducting device 220 controls the first conducting device
210 open circuits, the first conducting device 210 controls instruction device 240 and quits work.
First conducting device 210 includes the first conducting resistance R1, the first turn-on transistor Q1 and conducting electric capacity C1, described
The node that first conducting resistance R1 and described conducting electric capacity C1 couple couples power supply, and described conducting electric capacity C1 is with described
The base stage of the first turn-on transistor Q1 couples, the first described conducting resistance R1 and the current collection of the first described turn-on transistor Q1
Pole couples, the grounded emitter of the first described turn-on transistor Q1.
Second conducting device 220 includes the second turn-on transistor Q2 and the second conducting resistance R2, described second conducting three poles
The base stage of pipe Q2 couples described second conducting resistance R2, described second conducting resistance R2 and the first described conducting device 210 coupling
Connecing, the emitter stage of the second described turn-on transistor Q2 couples described power supply, the collection of the second described turn-on transistor Q1
Electrode couples described instruction device 240.
Adjusting means 230 include the first regulation resistance R3 and second regulation resistance R4, described first regulation resistance R3 with
The second described regulation resistance R4 series connection ground connection, the first described regulation resistance R3 couples with the first described conducting device 210.
Instruction device 240 includes that the first display lamp L1 and protective resistance R5 being arranged in series, the first instruction L1 lamp are set to
Redness, the first display lamp L1 couples the colelctor electrode of the second turn-on transistor Q2, and protective resistance R5 couples described first conducting three poles
The emitter stage of pipe Q1.
Switching value alarm front view as shown in Figure 3, power supply, control circuit and alarm device 160 are wholely set, and save
Save the installation cost of switching value alarm, the gas concentration in region can be monitored and report to the police, the first display lamp
L1 and the second display lamp L2 is arranged at the top of switching value alarm, and speaker B and gas sensor S1 is respectively arranged at described
The bottom of switching value alarm.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
The present embodiment can be made after reading this specification by member as required does not has the amendment of creative contribution, but as long as at this
All protected by Patent Law in the right of invention.
Claims (10)
1. a switching value alarm, including power supply, control circuit and the alarm device being controlled by described control circuit
(160), it is characterized in that: described control circuit includes
Detection device (120), including gas sensor, output detections voltage；
Standard apparatus (110), according to gas concentration alarm threshold value, it is provided that a reference voltage；
Comparison means (130), including voltage comparator, respectively with described detection device (120) and standard apparatus (110) coupling
Connect, output drive signal after detection voltage is more than reference voltage；
Time set (140), couples with described comparison means (130), and the driving signal output accepting a Preset Time controls
Signal；
Control device (150), be controlled by described control signal control alarm device (160) and report to the police.
A kind of switching value alarm the most according to claim 1, is characterized in that: described power supply is provided with detection electricity
Road, described testing circuit includes the first conducting device (210), the second conducting device (220), adjusting means (230) and instruction
Device (240), adjusting means (230) can set a predetermined value to power supply, adjusts after power supply is less than this predetermined value
Regulating device (230) controls the second conducting device (220) open circuit, and the second conducting device (220) controls the first conducting device (210) and breaks
Road, the first conducting device (210) controls instruction device (240) and quits work.
A kind of switching value alarm the most according to claim 1, is characterized in that: described standard apparatus (110) includes the
One reference resistance, the second reference resistance and the 3rd reference resistance, described the first reference resistance, the second reference resistance and the 3rd base
Quasi-resistant series ground connection, the first described reference resistance couples described comparison means with the node of described second reference resistance
(130)。
A kind of switching value alarm the most according to claim 1, is characterized in that: described time set (140) includes crystalline substance
Shake, enumerator and depositor, described crystal oscillator is used for providing time moderate pulse, and enumerator for counting and is deposited in depositor,
Enumerator is output control signals to control device (150) by the outfan of enumerator after receiving the control signal of a Preset Time.
A kind of switching value alarm the most according to claim 1, is characterized in that: described control device (150) includes the
One controls resistance, the second control resistance and controls audion, and the first described control resistance controls resistance string with described second
Coupling ground, the first described control resistance and the described second node controlling resistance couple the base stage of described control audion,
The described base stage controlling audion couples described alarm device (160).
A kind of switching value alarm the most according to claim 2, is characterized in that: described the first conducting device (210) bag
Include the first conducting resistance, the first turn-on transistor and conducting electric capacity, the first described conducting resistance and described conducting electric capacity coupling
The node connect couples power supply, and described conducting electric capacity couples with the base stage of described first turn-on transistor, described first
Conducting resistance couples with the colelctor electrode of the first described turn-on transistor, the grounded emitter of the first described turn-on transistor.
A kind of switching value alarm the most according to claim 2, is characterized in that: described the second conducting device (220) bag
Including the second turn-on transistor and the second conducting resistance, the base stage of described second turn-on transistor couples described second conducting resistance,
Described second conducting resistance couples with described the first conducting device (210), the emitter stage coupling of the second described turn-on transistor
Connecing described power supply, the colelctor electrode of the second described turn-on transistor couples described instruction device (240).
A kind of switching value alarm the most according to claim 2, is characterized in that: described adjusting means (230) includes the
One regulation resistance and the second regulation resistance, the first described regulation resistance and the described second regulation resistant series ground connection are described
First regulation resistance couple with described the first conducting device (210).
A kind of switching value alarm the most according to claim 2, is characterized in that: described instruction device (240) includes string
First display lamp of connection setting and protective resistance.
A kind of switching value alarm the most according to claim 1, is characterized in that: described power supply, control circuit and
Alarm device (160) is wholely set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610820024.0A CN106205065A (en) | 2016-09-13 | 2016-09-13 | Switching value alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610820024.0A CN106205065A (en) | 2016-09-13 | 2016-09-13 | Switching value alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106205065A true CN106205065A (en) | 2016-12-07 |
Family
ID=58067505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610820024.0A Pending CN106205065A (en) | 2016-09-13 | 2016-09-13 | Switching value alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106205065A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760978A (en) * | 2018-04-20 | 2018-11-06 | 广州晓谷川骐通信技术有限公司 | Gas-detecting device and system |
| CN113109739A (en) * | 2021-04-02 | 2021-07-13 | 重庆凯瑞传动技术有限公司 | Slip ring detection device and detection method for rail transit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2280905Y (en) * | 1996-08-19 | 1998-05-06 | 陕西省铜川市电影发行放映公司 | Gas alarm |
| CN2322192Y (en) * | 1998-01-16 | 1999-06-02 | 古维德 | Alarm device with controller |
| CN102189966A (en) * | 2010-03-18 | 2011-09-21 | 哈尔施塔特布罗斯尔汽车零件两合公司 | Regulating system of motor vehicle |
| CN202383804U (en) * | 2012-01-09 | 2012-08-15 | 付喜辉 | Gas concentration monitoring control device |
| CN103901868A (en) * | 2014-04-21 | 2014-07-02 | 无锡职业技术学院 | Intelligent controller for gas leakage power supply |
| CN105676668A (en) * | 2016-04-18 | 2016-06-15 | 武汉百络优物联科技有限公司 | Warping plate type intelligent controller |
| CN205486626U (en) * | 2016-02-01 | 2016-08-17 | 东华理工大学 | Fire control safety precaution system |
-
2016
- 2016-09-13 CN CN201610820024.0A patent/CN106205065A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2280905Y (en) * | 1996-08-19 | 1998-05-06 | 陕西省铜川市电影发行放映公司 | Gas alarm |
| CN2322192Y (en) * | 1998-01-16 | 1999-06-02 | 古维德 | Alarm device with controller |
| CN102189966A (en) * | 2010-03-18 | 2011-09-21 | 哈尔施塔特布罗斯尔汽车零件两合公司 | Regulating system of motor vehicle |
| CN202383804U (en) * | 2012-01-09 | 2012-08-15 | 付喜辉 | Gas concentration monitoring control device |
| CN103901868A (en) * | 2014-04-21 | 2014-07-02 | 无锡职业技术学院 | Intelligent controller for gas leakage power supply |
| CN205486626U (en) * | 2016-02-01 | 2016-08-17 | 东华理工大学 | Fire control safety precaution system |
| CN105676668A (en) * | 2016-04-18 | 2016-06-15 | 武汉百络优物联科技有限公司 | Warping plate type intelligent controller |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760978A (en) * | 2018-04-20 | 2018-11-06 | 广州晓谷川骐通信技术有限公司 | Gas-detecting device and system |
| CN113109739A (en) * | 2021-04-02 | 2021-07-13 | 重庆凯瑞传动技术有限公司 | Slip ring detection device and detection method for rail transit |
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Application publication date: 20161207 |