CN107123225A - It is pyrolyzed particle detection device - Google Patents
It is pyrolyzed particle detection device Download PDFInfo
- Publication number
- CN107123225A CN107123225A CN201710518507.XA CN201710518507A CN107123225A CN 107123225 A CN107123225 A CN 107123225A CN 201710518507 A CN201710518507 A CN 201710518507A CN 107123225 A CN107123225 A CN 107123225A
- Authority
- CN
- China
- Prior art keywords
- circuit
- pyrolysis particle
- pyrolysis
- particle
- alarm
- 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.)
- Pending
Links
- 239000002245 particle Substances 0.000 title claims abstract description 83
- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 238000000197 pyrolysis Methods 0.000 claims abstract description 66
- 238000000034 method Methods 0.000 claims abstract description 24
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 3
- 229920000915 polyvinyl chloride Polymers 0.000 abstract 1
- 239000004800 polyvinyl chloride Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000010259 detection of temperature stimulus Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
Classifications
-
- 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
- G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fire Alarms (AREA)
Abstract
The invention belongs to electrical fire detection technology field, more particularly to a kind of pyrolysis particle detection device for being directed to thermal wire polyvinyl chloride insulation crust gas particle spilling, including pyrolysis particle sensor, temperature sensor, it is pyrolyzed particle signal process circuit, processes temperature signal circuit, A/D change-over circuits, one-chip computer, it is pyrolyzed particle concentration decision circuitry, alarm and display circuit, the pyrolysis particle sensor and temperature sensor are connected with pyrolysis particle signal process circuit and processes temperature signal circuit respectively, the pyrolysis particle signal process circuit and processes temperature signal circuit are connected with the A/D change-over circuits, the A/D change-over circuits are connected with the one-chip computer, the one-chip computer is connected with the pyrolysis particle concentration decision circuitry, the pyrolysis particle concentration decision circuitry is connected with the alarm and display circuit.Present invention pyrolysis particle concentration alarming value is not changeless, but is judged with the rate of change of the concentration of pyrolysis particle, it is ensured that the alarm relative value to pyrolysis particle concentration is constant, improves the accuracy rate of alarm.
Description
Technical field
The invention belongs to electrical fire detection technology field, particle detection device is pyrolyzed more particularly to one kind.
Background technology
Existing electrical fire monitoring device, the only detection and the detection of temperature to residual current, it is impossible to ensure to all
Occur the conductor overheating that causes of electric fault such as overcurrent and carry out Detection And Warning, therefore, easily occur failing to report police, need into
One step improves the Detection Techniques to electrical fire.This technology has filled up this blank.
The content of the invention
Present invention aims at particle detection device is pyrolyzed for not enough one kind that provides of the prior art, by distribution
The detection for the concentration that pyrolysis particle is separated out, is improved to the accurate of electric fire alarm after bin inner lead insulation sheath overheat
Rate.
Particle detection device, including pyrolysis particle sensor, TEMP are pyrolyzed The embodiment provides one kind
Device, pyrolysis particle signal process circuit, processes temperature signal circuit, A/D change-over circuits, one-chip computer, pyrolysis particle concentration
Decision circuitry, alarm and display circuit, pyrolysis particle sensor and temperature sensor are respectively with being pyrolyzed particle signal process circuit
And the connection of processes temperature signal circuit, pyrolysis particle signal process circuit and processes temperature signal circuit connect with A/D change-over circuits
Connect, A/D change-over circuits are connected with one-chip computer, one-chip computer is connected with the pyrolysis particle concentration decision circuitry, is pyrolyzed
Particle concentration decision circuitry is connected with alarm and display circuit.
Further, the device also includes Information Compression and storage circuit, Information Compression and storage circuit and one-chip computer
Connection.
Further, one-chip computer is connected with alarm and display circuit.
Further, the device also includes power circuit, and power circuit is connected with single-chip microcomputer.
Compared with prior art the beneficial effects of the invention are as follows：The present apparatus can be in breakdown of conducting wires early detection conductor overheating
The pyrolysis particle separated out, is alarmed early stage electrical fire failure, improves the accuracy rate of alarm.
Brief description of the drawings
Fig. 1 shows the structured flowchart of present invention pyrolysis particle detection device；
Fig. 2 shows the circuit diagram of present invention pyrolysis particle detection device one-chip computer；
Fig. 3 shows that present invention pyrolysis particle detection device is pyrolyzed the circuit diagram of particle concentration decision circuitry；
Fig. 4 shows the circuit diagram of present invention pyrolysis particle detection device alarm and display circuit；
Fig. 5 shows the circuit diagram of present invention pyrolysis particle detection device information compression and storage circuit.
Embodiment
The present invention is described in further detail below by specific embodiment and with reference to accompanying drawing.
With reference to instantiation and Figure of description, the present invention will be further described.
Join shown in Fig. 1 to Fig. 5, present embodiments provide a kind of pyrolysis particle detection device, including 1, pyrolysis particle sensing
Device 2, temperature sensor 3, pyrolysis particle signal process circuit 4, processes temperature signal circuit 5, A/D change-over circuits 6, monolithic are calculated
Machine 7, pyrolysis particle concentration decision circuitry 8, alarm and display circuit 9, power circuit, pyrolysis particle sensor 1 and TEMP
Device 2 is connected with pyrolysis particle signal process circuit 3 and processes temperature signal circuit 4 respectively, pyrolysis particle signal process circuit 3 and
Processes temperature signal circuit 4 is connected with A/D change-over circuits 5, and A/D change-over circuits 5 are connected with one-chip computer 6, one-chip computer 6
It is connected with pyrolysis particle concentration decision circuitry 7, pyrolysis particle concentration decision circuitry 7 is connected with the alarm and display circuit 9.
The pyrolysis particle detection device that the present embodiment is provided, with to the heated pyrolysis particle-sensitive separated out of wire insulation
Characteristic, i.e.,：It can overheat, improve to the accurate of electric fire alarm to wire in the early detection for not yet occurring electrical fire
Property.
In the present embodiment, the device also includes Information Compression and storage circuit 8, Information Compression and storage circuit 8 and list
Piece computer 6 is connected.Because the pyrolysis particle numerical value in the most of the time in one day is constant, such as steady in distribution system
In the case of fixed work, the pyrolysis particle information that pyrolysis particle detector was picked up every tens seconds has substantial amounts of numerical value to be
Exactly the same.After the data for often measuring a pyrolysis particle concentration, just the data newly measured are contrasted with previous data,
If result of the comparison differs very little, it is considered as that the two is identical, without record, when the data detected have large change
This data recording just can be greatlyd save by Information Compression and storage circuit 8 by memory using this compress technique
The space of saving, is noted down more contents by space.When occurring alarm or user's inquiry, alarm and display circuit can be passed through
9 show pyrolysis particle alarm times and time, for reference.
In the present embodiment, one-chip computer 6 is connected with alarm and display circuit 9.The device has self-learning function, root
Regularity according to the size variation feature of pyrolysis particle concentration daily, monthly is remembered, and when occurring unexpected change, is not inconsistent
When closing this rule and when pyrolysis particle concentration reaches alarming value, this numerical value keeps being issued by alarm after certain time.
In the present embodiment, the device also includes power circuit 10, and power circuit 10 is connected with single-chip microcomputer 6, complete machine power supply
Powered by fire-fighting power supply is unified, and each circuit is supplied to by the conversion of power circuit 10.
In the present embodiment, pyrolysis particle sensor 1 is used to detect the heated heat separated out of power supply circuit wire external insulation layer
Particle is solved, the size of the concentration of particle is pyrolyzed and is reacted directly on the voltage signal of pyrolysis particle sensor output.
What pyrolysis particle sensor and temperature sensor were exported is voltage signal, in signal processing circuit, voltage letter
Number it is input in A/D change-over circuits 5 by compensation deals, d. c. voltage signal is changed into data signal incessantly, and input
Handled into one-chip computer 6.
The effect of the present embodiment one-chip computer (MCU) includes：
1) data of continuously pyrolysis particle concentration signal and temperature signal are compressed storage.Its principle is to work as
It is compared in previous data when receiving current data, when the difference of the two is less than ± 1%, it is believed that the two is phase
With, do not noted down in current memory, when new data are more than the 1% of (or less than) previous data, just progress
New data recording.Advantage of this is that can greatly reduce makes memory-aided record space, record can be greatly increased
Content, record content transport is to storage circuit.
2) the continuously data of pyrolysis particle concentration and pyrolysis particle alarming value are compared, while wire temperature
Degree is included in reference value and is compared, when being pyrolyzed particle concentration value more than or equal to alarm threshold value, while wire temperature sensor
When temperature meets or exceeds 80 DEG C, after the time of delay 30-60 seconds, if pyrolysis particle concentration value is also greater than alarming value and temperature
Degree is not reduced, then MCU alerts, are transported to warning circuit, send sound and light alarm signal.
3) when equipment is just started working, pyrolysis particle alarming value is fixed numbers, for example：100ppm, is pyrolyzed particle concentration
Value will once alarm more than this numerical value, but if daily to the regular hour (for example：The morning 8:00 work hours),
Because operating current starts increase, pyrolysis particle concentration regular can all increase, and pyrolysis particle concentration value all increases to
More than 100ppm some numerical value, such as：For 150ppm, computer can automatically note down this numerical value, then be pyrolyzed particle
Alarming value is further added by 100ppm on the basis of this numerical value and is changed into 250ppm into pyrolysis particle alarm threshold value the newest.Daily
Operating current is reduced to very low after coming off duty, and pyrolysis particle value is when being also reduced to very low, and pyrolysis particle alarm threshold value also drops therewith
It is low to arrive original 100ppm, become again until the work hours of second day.If new changing rule, as long as its rule is continuously super
5 days are spent, the threshold value of pyrolysis particle alarm will be readjusted according to new rule, the function of this part is complete by servo-actuated threshold circuit
Into.
A series of specifically the illustrating only for feasibility embodiment of the invention of those listed above,
They simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention or change
More it should be included in the scope of the protection.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Claims (4)
1. one kind pyrolysis particle detection device, it is characterised in that including pyrolysis particle sensor, temperature sensor, pyrolysis particle
Signal processing circuit, processes temperature signal circuit, A/D change-over circuits, one-chip computer, pyrolysis particle concentration decision circuitry, report
Alert and display circuit, the pyrolysis particle sensor, processes temperature signal circuit are respectively with being pyrolyzed particle signal process circuit, temperature
Spend signal processing circuit connection, the pyrolysis particle signal process circuit, processes temperature signal circuit and the A/D change-over circuits
Connection, the A/D change-over circuits are connected with the one-chip computer, and the one-chip computer judges with the pyrolysis particle concentration
Circuit is connected, and the pyrolysis particle concentration decision circuitry is connected with the alarm and display circuit.
2. pyrolysis particle detection device according to claim 1, it is characterised in that also including Information Compression and storage electricity
Road, described information compression and storage circuit are connected with the one-chip computer.
3. pyrolysis particle detection device according to claim 2, it is characterised in that the one-chip computer and the alarm
And display circuit connection.
4. pyrolysis particle detection device according to claim 3, it is characterised in that also including power circuit, the power supply
Circuit is connected with the one-chip computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710518507.XA CN107123225A (en) | 2017-06-30 | 2017-06-30 | It is pyrolyzed particle detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710518507.XA CN107123225A (en) | 2017-06-30 | 2017-06-30 | It is pyrolyzed particle detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107123225A true CN107123225A (en) | 2017-09-01 |
Family
ID=59720126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710518507.XA Pending CN107123225A (en) | 2017-06-30 | 2017-06-30 | It is pyrolyzed particle detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107123225A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108961657A (en) * | 2018-08-09 | 2018-12-07 | 北京海博智恒电气防火科技有限公司 | It is pyrolyzed particle detection apparatus and system |
| CN109166269A (en) * | 2018-08-30 | 2019-01-08 | 中国建筑科学研究院有限公司 | Fire early warning device and system based on wireless communication |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004240565A (en) * | 2003-02-04 | 2004-08-26 | Matsushita Electric Works Ltd | Heat and smoke composite sensor, fire alarm and fire alarm system |
| CN204422787U (en) * | 2014-12-16 | 2015-06-24 | 公安部沈阳消防研究所 | A kind of fire sign sniffer |
| CN105701955A (en) * | 2016-04-22 | 2016-06-22 | 沈阳申泰电器系统有限公司 | Electrical fire monitoring detection system and method |
| CN205722283U (en) * | 2016-04-22 | 2016-11-23 | 沈阳申泰电器系统有限公司 | A kind of electric fire disaster monitoring detection system |
| CN205913678U (en) * | 2016-07-26 | 2017-02-01 | 中车唐山机车车辆有限公司 | Rail vehicle fire extinguishing system |
-
2017
- 2017-06-30 CN CN201710518507.XA patent/CN107123225A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004240565A (en) * | 2003-02-04 | 2004-08-26 | Matsushita Electric Works Ltd | Heat and smoke composite sensor, fire alarm and fire alarm system |
| CN204422787U (en) * | 2014-12-16 | 2015-06-24 | 公安部沈阳消防研究所 | A kind of fire sign sniffer |
| CN105701955A (en) * | 2016-04-22 | 2016-06-22 | 沈阳申泰电器系统有限公司 | Electrical fire monitoring detection system and method |
| CN205722283U (en) * | 2016-04-22 | 2016-11-23 | 沈阳申泰电器系统有限公司 | A kind of electric fire disaster monitoring detection system |
| CN205913678U (en) * | 2016-07-26 | 2017-02-01 | 中车唐山机车车辆有限公司 | Rail vehicle fire extinguishing system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108961657A (en) * | 2018-08-09 | 2018-12-07 | 北京海博智恒电气防火科技有限公司 | It is pyrolyzed particle detection apparatus and system |
| CN109166269A (en) * | 2018-08-30 | 2019-01-08 | 中国建筑科学研究院有限公司 | Fire early warning device and system based on wireless communication |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170901 |