CN2212805Y - Intelligent anti-theft, fire-proof detector - Google Patents
Intelligent anti-theft, fire-proof detector Download PDFInfo
- Publication number
- CN2212805Y CN2212805Y CN 93244269 CN93244269U CN2212805Y CN 2212805 Y CN2212805 Y CN 2212805Y CN 93244269 CN93244269 CN 93244269 CN 93244269 U CN93244269 U CN 93244269U CN 2212805 Y CN2212805 Y CN 2212805Y
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- Prior art keywords
- detector
- passive infrared
- sensor
- temperature
- light intensity
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- 238000005070 sampling Methods 0.000 claims abstract description 8
- 238000004079 fireproofing Methods 0.000 claims description 8
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 claims 1
- 238000002604 ultrasonography Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000036581 peripheral resistance Effects 0.000 description 1
- 238000000825 ultraviolet detection Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
The utility model relates to a fire prevention, theftproof detector. The detector mainly solves the problems that the conventional similar detector is easy to output wrong information to cause false alarm and false alarm. The alarm condition discriminating circuit is composed of a sampling hold and A/D converter and a single chip microcomputer which is solidified with alarm condition discriminating and fuzzy processing program, so as to replace the scheme that the existing detector adopts a voltage comparator to discriminate the alarm condition, and a light intensity and temperature detecting circuit is additionally arranged in the passive infrared detector, so that the automatic compensation of the light intensity and the temperature of the passive infrared signal is realized. Compared with the existing detector, the detector obviously reduces the false alarm rate and the false missing rate, and can be widely used as a detection device of a fireproof and antitheft alarm.
Description
The utility model belongs to the fundamental measurement element, particularly a kind of antitheft, fireproofing detector.
At present, antitheft on the market, the fireproofing detector kind is a lot.Wherein, pir intrusion detector is based on passive infrared detector, passive infrared microwave double-identifying type detector, fireproofing detector is with smoke detector, ultraviolet detection, the Multi-Mode Seeker that the hygrosensor three makes up in twos or triplicity forms is main, and the common feature of these detectors has been to use voltage comparator as the alert judging circuit.When the detectable signal after amplifying, when exceeding the scope of voltage comparator setting, produce alerting signal, otherwise, do not report to the police.For example passive infrared, the microwave double-identifying type pir intrusion detector of the design of common employing passive infrared frontier technology are exactly the infrared signal of mobile human body that Passive Infrared Sensor is detected on the market, after the signal that bandpass filter is selected the human body travel frequency amplifies, enter voltage comparator, as signal pressure y
' 1At reference voltage U
11, U
12Between the time, the comparer output low level, the microwave starting controller is not worked, detector is output as " do not have steal feelings " state, works as y
' 1Surpass U
11, U
12Between the time, comparer output high level, the microwave starting controller starts, microwave remote sensor work, the microwave sounding signal y after amplifying
' 2Greater than reference voltage U
21The time, detector is output as " having the feelings of robber to take place " state.Otherwise, y
' 2Less than U
21The time, detector output still is " not having the feelings of robber " state, as described in Figure 5.
The major defect of this circuit has 2 points:
(1) output of Passive Infrared Sensor is subjected to temperature, and the light intensity influence is prone to wrong output information
(2) adopt the voltage comparator structure, make the output of arbitrary detection mode that two states only be arranged, therefore often can not very appropriately false alarm occur or fail to report the police because of choosing of comparator reference voltage.
Other multi-modes for other antitheft detection aware application voltage comparators of using the passive infrared sensing are antitheft, and also there are above-mentioned two strip defects respectively in fireproofing detector.
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, provides a kind of and both can avoid Passive Infrared Sensor output influenced by the temperature light intensity, wrong output information occurs; Can suppress again the improper anti-benefit of intelligence, the fireproofing detector that produces wrong report to be set because of the voltage comparator reference voltage.
Realize that the purpose of this utility model is to adopt the scheme of voltage comparator as the alert judging circuit in employing A/D converter and the existing detector of single chip computer architecture replacement that is solidified with alert differentiation and Fuzzy Processing program, and for the pir intrusion detector that contains Passive Infrared Sensor, set up temperature, the light intensity testing circuit, and realize the automatic compensation of temperature, light intensity in conjunction with scm software.
Followingly describe structure of the present utility model and principle of work in detail with reference to accompanying drawing.
Fig. 1 is a block diagram of the present utility model
Fig. 2 is a temperature detection wiring diagram of the present utility model
Fig. 3 is light intensity detection line figure of the present utility model
Fig. 4 is an infrastructure software process flow diagram of the present utility model
Fig. 5 is existing panel detector structure block scheme
Temperature sensor among Fig. 1, light intensity sensor and subsequent filter amplifier are that the temperature light intensity testing circuit set up of the infrared theft-proof sensor of passive type is with Passive Infrared Sensor, constitute Passive Infrared Sensor with temperature compensation function, its output is connected respectively to sampling and keeps and A/D converter, the output of A/D converter is connected to single-chip microcomputer, and the output of single-chip microcomputer is connected to the alerting signal output element.The Multi-Mode Seeker that theft-proof sensor can be passive infrared sensing or passive infrared, microwave, the ultrasonic sensor three makes up in twos or triplicity forms.A/D converter adopts the ADC809 model, and single-chip microcomputer adopts 80C31, and the alerting signal output element adopts relay.Keep by sampling and A/D converter is connected to single-chip microcomputer as the sensor 1 of fireproofing detector or sensor 2 and thereafter filter amplifier.This fire prevention acquisition sensor can be that sense cigarette, temperature-sensitive, ultraviolet three make up or triplicity in twos.
As the testing circuit of pir intrusion detector temperature compensation as shown in Figure 2.Its triode BG
1With peripheral resistance R
1, R
2, R
3Form the signal filtering amplifying circuit, temperature sensor is selected temp .-sensitive diodes DT, perhaps thermo-sensitive resistor for use.Different environment temperature correspondences different A point current potentials, and the signal that A is ordered is through R
2Be coupled to triode BG
1Amplify, the signal after the amplification, promptly B point current potential delivers to that sampling keeps and the A/D change-over circuit converts digital quantity to, and this digital quantity is sent into the temperature self-compensation that Single Chip Microcomputer (SCM) system realizes the passive infrared signal.
The metering circuit of being repaid as light intensity as shown in Figure 3.Photodiode D
1Form light sensor, triode BG with optical filter T
2, photodiode D
1Resistance R peripheral with it
4, R
5Constitute amplifying circuit, photodiode D
2Before be added with optical filter T, to constitute variable optical attenuator.During work, optical filter T elder generation light intensity to external world weakens, and the light intensity after weakening is radiated at photodiode D
1On, A point current potential is changed, the A point signal after the variation is through R
2Be coupled to triode BG
1After the amplification, at the light intensity signal that the B point obtains amplifying, this signal enters the sampling protection and A/D converter converts digital quantity to, and the light intensity of sending into Single Chip Microcomputer (SCM) system realization passive infrared signal again compensates automatically.
Whole detector operation process is:
The signal that acquisition sensor detects being sent into sampling and keeping and the A/D change-over circuit after filtering is amplified, and converts digital quantity to and enters Single Chip Microcomputer (SCM) system and carry out routine processes.Promptly for the digital quantity after the A/D conversion, program judges whether at first to be the passive infrared signal that if then multiply by temperature, the luminosity compensation coefficient is realized the automatic compensation of temperature light intensity.If system is a passive infrared monotype detector, when then the passive infrared signal after compensating is greater than a certain value, output has the alert signal, otherwise export no alert signal, for passive infrared microwave Multi-Mode Seeker, then will carry out Fuzzy processing to the result after the compensation, the fuzzy reasoning by the data fuzzy rule base draws whether have the information that alert takes place again, as the output of detector.
Then its A/D conversion amount is directly carried out Fuzzy processing and rule-based reasoning if not the passive infrared signal and draw the fuzzy number that has or not alert to judge, when alert fuzzy number output alarm information during, as shown in Figure 4 greater than a certain value.
The utility model because adopt A/D converter and single chip computer architecture as the alert judging circuit thereby reduced wrong report and rate of failing to report; Owing in the passive infrared pir intrusion detector, have additional light intensity, the temperature self-compensation that light intensity, temperature sensing circuit and scm software are realized Passive Infrared Sensor,, improved the reliability of device simultaneously so avoided wrong output.
Claims (2)
1, a kind of antitheft, fireproofing detector, include passive infrared, microwave multimode pir intrusion detector, passive infrared single mode pir intrusion detector and multi-mode fireproofing detector, the formation of each detector is in Passive Infrared Sensor and passive infrared sensing and microwave remote sensor or ultrasound wave sensing, the sense smoke sensor is connected filter amplification circuit respectively with temperature-sensitive sensor or UV sensor back, signal after the amplification is connected to the alert judging circuit, and output alert signal is given alarm element, it is characterized in that:
1. the alert judging circuit is by sampling maintenance and A/D converter and is solidified with that alert is differentiated and the single-chip microcomputer that carries out Fuzzy Processing software constitutes;
2. in passive infrared detector, set up the temperature that is used to realize temperature, light compensation, the light intensity testing circuit.
2, detector according to claim 1 is characterized in that temperature, light intensity testing circuit are by temperature sensor, and the light intensity sensor back connects filter amplification circuit respectively and constitutes, and the output of filter amplification circuit also is connected to sampling and keeps and A/D converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93244269 CN2212805Y (en) | 1993-11-15 | 1993-11-15 | Intelligent anti-theft, fire-proof detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93244269 CN2212805Y (en) | 1993-11-15 | 1993-11-15 | Intelligent anti-theft, fire-proof detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2212805Y true CN2212805Y (en) | 1995-11-15 |
Family
ID=33817516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93244269 Expired - Fee Related CN2212805Y (en) | 1993-11-15 | 1993-11-15 | Intelligent anti-theft, fire-proof detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2212805Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426330C (en) * | 2006-12-29 | 2008-10-15 | 黄尚南 | Infrared microwave alarm |
| CN101299288B (en) * | 2007-05-01 | 2012-03-21 | 霍尼韦尔国际公司 | Fire detection system and method thereof |
| CN102779389A (en) * | 2012-07-19 | 2012-11-14 | 上海电控研究所 | Single ultraviolet phototube optical detector for fire detection at high temperature |
| CN108107779A (en) * | 2017-12-15 | 2018-06-01 | 江苏厨安厨房自动灭火设备制造有限公司 | The method for solving kitchen automatic fire extinguishing system false alarm |
| CN108711835A (en) * | 2018-06-13 | 2018-10-26 | 方碧水 | A kind of line temperature detection device and application method |
| CN114910977A (en) * | 2022-05-13 | 2022-08-16 | 上海翰萨智能科技有限公司 | Human body detector, detection method and inspection method |
-
1993
- 1993-11-15 CN CN 93244269 patent/CN2212805Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426330C (en) * | 2006-12-29 | 2008-10-15 | 黄尚南 | Infrared microwave alarm |
| CN101299288B (en) * | 2007-05-01 | 2012-03-21 | 霍尼韦尔国际公司 | Fire detection system and method thereof |
| CN102779389A (en) * | 2012-07-19 | 2012-11-14 | 上海电控研究所 | Single ultraviolet phototube optical detector for fire detection at high temperature |
| CN108107779A (en) * | 2017-12-15 | 2018-06-01 | 江苏厨安厨房自动灭火设备制造有限公司 | The method for solving kitchen automatic fire extinguishing system false alarm |
| CN108711835A (en) * | 2018-06-13 | 2018-10-26 | 方碧水 | A kind of line temperature detection device and application method |
| CN114910977A (en) * | 2022-05-13 | 2022-08-16 | 上海翰萨智能科技有限公司 | Human body detector, detection method and inspection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |