CN202177963U - Point type photoelectric smoke detector - Google Patents
Point type photoelectric smoke detector Download PDFInfo
- Publication number
- CN202177963U CN202177963U CN2011203134866U CN201120313486U CN202177963U CN 202177963 U CN202177963 U CN 202177963U CN 2011203134866 U CN2011203134866 U CN 2011203134866U CN 201120313486 U CN201120313486 U CN 201120313486U CN 202177963 U CN202177963 U CN 202177963U
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- China
- Prior art keywords
- circuit
- resistance
- connects
- smoke detector
- type photoelectric
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- 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.)
- Withdrawn - After Issue
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- 239000000779 smoke Substances 0.000 title claims abstract description 13
- 238000005070 sampling Methods 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000011002 quantification Methods 0.000 claims description 13
- 238000013139 quantization Methods 0.000 abstract 3
- 238000001514 detection method Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Fire-Detection Mechanisms (AREA)
Abstract
The utility model provides a point type photoelectric smoke detector, which ensures that a coded signal sampling CPU can accurately detect a low level without interference from an external circuit when the coded signal is converted from a high level to a low level, and will not cause incorrect decoding phenomenon so as to ensure detection sensitivity. The point type photoelectric smoke detector comprises an input circuit, a code receiving and sending circuit, a CPU processing unit circuit, a quantization treatment module, a light receiving part, a light emitting part, an alarm lamp and a labyrinth; an alarm bus is connected with the input circuit; the input circuit is connected with the code receiving and sending circuit; the code receiving and sending circuit is communicated with the CPU processing unit circuit; the CPU processing unit circuit is connected with the quantization treatment module, the light receiving part, the light emitting part and the alarm lamp respectively; the light receiving part and the light emitting part are connected with the labyrinth respectively; the alarm lamp is connected with the light emitting part; the light receiving part is connected with the quantization treatment module; and the code receiving and sending circuit comprises a code receiving circuit and a code sending circuit. The point type photoelectric smoke detector is characterized in that: the coded signal input end of the code receiving circuit of the code receiving and sending circuit is connected with a resistor R1 and then is connected with one end of resistors R2 and R3 respectively.
Description
Technical field
The utility model relates to the technical field of fire detector structure, is specially a kind of spot-type photoelectric smoke detector.
Background technology
Existing spot-type photoelectric smoke detector, it is strong inadequately that it receives the decoding circuit interference free performance, is subject to outer circuit and disturbs; Its concrete structure of receiving decoding circuit is seen Fig. 1; Its coded signal input end connects coded signal sampling CPU receiving end, resistance R 2 earth terminals respectively after connecting resistance R 1, during this arrangement works, when coded signal changes into low level by high level; Undesired signal can produce the current potential greater than 0.5V at the coded signal input end; Making that CPU is unreliable maybe can not detect low level, thereby misunderstands a yard phenomenon, make survey malfunctioning.
Summary of the invention
To the problems referred to above, the utility model provides a kind of spot-type photoelectric smoke detector, and it guarantees that coded signal sampling CPU can be when coded signal changes into low level by high level; Not disturbed by outer circuit; Accurately detect low level, yard phenomenon of not misunderstanding is guaranteed to survey sensitive.
A kind of spot-type photoelectric smoke detector; Its technical scheme is such: it comprises input circuit, regains decoding circuit, CPU processing unit circuit, quantification treatment module, light absorbing part branch, luminous component, alarm lamp, labyrinth; The warning bus connects said input circuit, and said input circuit connects said withdrawal decoding circuit, and said withdrawal decoding circuit is communicated with said CPU processing unit circuit; Said CPU processing unit circuit connects quantification treatment module, light absorbing part branch, luminous component, alarm lamp respectively; Said light absorbing part branch, luminous component connect said labyrinth respectively, and said alarm lamp connects said luminous component, and said light absorbing part divides and connects said quantification treatment module; Said withdrawal decoding circuit comprises receives decoding circuit, time decoding circuit; It is characterized in that: the coded signal input end of the receipts decoding circuit of said withdrawal decoding circuit connects the end that resistance R 1 connects resistance R 2, R3 afterwards respectively, said resistance R 2 other end ground connection, and the other end of said resistance R 3 connects the base stage of triode; The two ends of said resistance R 3 capacitor C 1 that is connected in parallel; The emitter of said triode connects coded signal sampling CPU receiving end, resistance R 4 one ends respectively, said resistance R 4 other end ground connection, and the collector of said triode connects supply voltage VCC.
It is further characterized in that: in the said quantification treatment module delustring is set and disturbs circuit; Said delustring is disturbed circuit and is specifically comprised photodiode RX, capacitor C 2, resistance R 5, resistance R 6; Said photodiode RX, capacitor C 2, resistance R 6 are connected into the closed-loop path; The two ends of the said photodiode RX said resistance R 5 that is connected in parallel, the said photodiode RX of light directive that said light absorbing part divides, the end away from said photodiode RX of said capacitor C 2 connects amplifier;
Said warning bus connects said input circuit after connecting current-limiting resistance;
Said current-limiting resistance is built in said input circuit, and said warning bus connects other circuit that connects said input circuit behind the said current-limiting resistance.
After adopting the structure of the utility model, when the coded signal level changeed low level by high level, the voltage on the capacitor C can produce a certain amount of negative pressure during through R2, R4 on R4 ended triode rapidly; Coded signal sampling CPU receiving end just has reliable low level output to supply CPU to receive like this; It guarantees that coded signal sampling CPU can not disturbed by outer circuit, accurately detects low level when coded signal changes into low level by high level; Yard phenomenon of not misunderstanding is guaranteed to survey sensitive; The high level of input CPU then is after the triode conducting, to be provided by the supply voltage VCC of voltage stabilizing.
Description of drawings
Fig. 1 is the structural representation of existing receipts decoding circuit;
Fig. 2 is the structural representation block diagram of the utility model;
Fig. 3 is the structural representation of the receipts decoding circuit in the withdrawal decoding circuit of Fig. 2;
Fig. 4 disturbs the structural representation of circuit for the delustring in the quantification treatment module of Fig. 2;
Fig. 5 is the structural representation of the input circuit of Fig. 2.
Embodiment
See Fig. 2, Fig. 3, Fig. 4, Fig. 5; It comprises input circuit, regains decoding circuit, CPU processing unit circuit, quantification treatment module, light absorbing part branch, luminous component, alarm lamp, labyrinth; The warning bus connects said input circuit, and said input circuit connects said withdrawal decoding circuit, and said withdrawal decoding circuit is communicated with said CPU processing unit circuit; Said CPU processing unit circuit connects quantification treatment module, light absorbing part branch, luminous component, alarm lamp respectively; Said light absorbing part branch, luminous component connect said labyrinth respectively, and said alarm lamp connects said luminous component, and said light absorbing part divides and connects said quantification treatment module; Said withdrawal decoding circuit comprises receives decoding circuit, time decoding circuit; It is characterized in that: the coded signal input end of the receipts decoding circuit of said withdrawal decoding circuit connects the end that resistance R 1 connects resistance R 2, R3 afterwards respectively, said resistance R 2 other end ground connection, and the other end of said resistance R 3 connects the base stage of triode; The two ends of said resistance R 3 capacitor C 1 that is connected in parallel; The emitter of said triode connects coded signal sampling CPU receiving end, resistance R 4 one ends respectively, said resistance R 4 other end ground connection, and the collector of said triode connects supply voltage VCC.
In the quantification treatment module delustring is set and disturbs circuit; Said delustring is disturbed circuit and is specifically comprised photodiode RX, capacitor C 2, resistance R 5, resistance R 6; Said photodiode RX, capacitor C 2, resistance R 6 are connected into the closed-loop path; The two ends of the said photodiode RX said resistance R 5 that is connected in parallel, the said photodiode RX of light directive that said light absorbing part divides, the end away from said photodiode RX of said capacitor C 2 connects amplifier;
Said warning bus connects said input circuit after connecting current-limiting resistance;
Said current-limiting resistance is built in said input circuit, and said warning bus connects the internal circuit that connects said input circuit behind the said current-limiting resistance.
Claims (4)
1. spot-type photoelectric smoke detector; It comprises input circuit, regains decoding circuit, CPU processing unit circuit, quantification treatment module, light absorbing part branch, luminous component, alarm lamp, labyrinth; The warning bus connects said input circuit, and said input circuit connects said withdrawal decoding circuit, and said withdrawal decoding circuit is communicated with said CPU processing unit circuit; Said CPU processing unit circuit connects quantification treatment module, light absorbing part branch, luminous component, alarm lamp respectively; Said light absorbing part branch, luminous component connect said labyrinth respectively, and said alarm lamp connects said luminous component, and said light absorbing part divides and connects said quantification treatment module; Said withdrawal decoding circuit comprises receives decoding circuit, time decoding circuit; It is characterized in that: the coded signal input end of the receipts decoding circuit of said withdrawal decoding circuit connects the end that resistance R 1 connects resistance R 2, R3 afterwards respectively, said resistance R 2 other end ground connection, and the other end of said resistance R 3 connects the base stage of triode; The two ends of said resistance R 3 capacitor C 1 that is connected in parallel; The emitter of said triode connects coded signal sampling CPU receiving end, resistance R 4 one ends respectively, said resistance R 4 other end ground connection, and the collector of said triode connects supply voltage VCC.
2. a kind of spot-type photoelectric smoke detector according to claim 1; It is characterized in that: in the said quantification treatment module delustring is set and disturbs circuit; Said delustring is disturbed circuit and is specifically comprised photodiode RX, capacitor C 2, resistance R 5, resistance R 6; Said photodiode RX, capacitor C 2, resistance R 6 are connected into the closed-loop path; The two ends of the said photodiode RX said resistance R 5 that is connected in parallel, the said photodiode RX of light directive that said light absorbing part divides, the end away from said photodiode RX of said capacitor C 2 connects amplifier.
3. a kind of spot-type photoelectric smoke detector according to claim 1 is characterized in that: said warning bus connects said input circuit after connecting current-limiting resistance.
4. a kind of spot-type photoelectric smoke detector according to claim 3 is characterized in that: said current-limiting resistance is built in said input circuit, and said warning bus connects other circuit that connects said input circuit behind the said current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203134866U CN202177963U (en) | 2011-08-26 | 2011-08-26 | Point type photoelectric smoke detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203134866U CN202177963U (en) | 2011-08-26 | 2011-08-26 | Point type photoelectric smoke detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202177963U true CN202177963U (en) | 2012-03-28 |
Family
ID=45867835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203134866U Withdrawn - After Issue CN202177963U (en) | 2011-08-26 | 2011-08-26 | Point type photoelectric smoke detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202177963U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426751A (en) * | 2011-08-26 | 2012-04-25 | 无锡蓝天电子有限公司 | Point-type photoelectric smoke detector |
| CN104318706A (en) * | 2014-11-05 | 2015-01-28 | 天津市畅悦电子科技有限公司 | Smoke detection circuit |
| CN104680703A (en) * | 2013-11-27 | 2015-06-03 | 西门子瑞士有限公司 | Auxiliary device for a hazard alarm constructed as a point type detector for the monitoring of the function of the danger alarm and use of a such device |
| CN106023513A (en) * | 2016-06-25 | 2016-10-12 | 河北中核石辐科技有限责任公司 | Redundant smog detector and system |
-
2011
- 2011-08-26 CN CN2011203134866U patent/CN202177963U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426751A (en) * | 2011-08-26 | 2012-04-25 | 无锡蓝天电子有限公司 | Point-type photoelectric smoke detector |
| CN102426751B (en) * | 2011-08-26 | 2013-07-17 | 无锡蓝天电子有限公司 | Point-type photoelectric smoke detector |
| CN104680703A (en) * | 2013-11-27 | 2015-06-03 | 西门子瑞士有限公司 | Auxiliary device for a hazard alarm constructed as a point type detector for the monitoring of the function of the danger alarm and use of a such device |
| CN104318706A (en) * | 2014-11-05 | 2015-01-28 | 天津市畅悦电子科技有限公司 | Smoke detection circuit |
| CN106023513A (en) * | 2016-06-25 | 2016-10-12 | 河北中核石辐科技有限责任公司 | Redundant smog detector and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120328 Effective date of abandoning: 20130717 |
|
| RGAV | Abandon patent right to avoid regrant |