CN203204766U - Electric leakage fire alarming and monitoring system - Google Patents
Electric leakage fire alarming and monitoring system Download PDFInfo
- Publication number
- CN203204766U CN203204766U CN 201320206629 CN201320206629U CN203204766U CN 203204766 U CN203204766 U CN 203204766U CN 201320206629 CN201320206629 CN 201320206629 CN 201320206629 U CN201320206629 U CN 201320206629U CN 203204766 U CN203204766 U CN 203204766U
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- leakage
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- temperature sensor
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Abstract
The utility model discloses an electric leakage fire alarming and monitoring system, which comprises a leakage current detector, a temperature sensor, an A/D converter, a signal amplifier, a single-chip microcomputer, a liquid crystal display LCD and an acousto-optic alarm. The leakage current detector and the temperature sensor are respectively connected with the A/D converter, the A/D converter, the signal amplifier and the single-chip microcomputer are successively connected, and the LCD and the acousto-optic alarm are respectively connected with the single-chip microcomputer. Preferably, the leakage current detector employs a current transformer BH-0.66, the temperature sensor employs an AD590 chip, and the single-chip microcomputer employs an AT89C41 chip. The leakage fire alarming and monitoring system has the advantages of rapid processing, convenient and reliable performance and high sensitivity.
Description
Technical field
The utility model relates to the automatic alarm field, relates in particular to a kind of leakage fire alarming supervisory system.
Background technology
In fire failure, electrical fire occupies very high ratio, causes huge casualties and property loss, and prevention and effective containment electrical fire seem very important.Studies show that, the electric arc shorted to earth is the major reason that causes electrical fire in the electrical grounding fault.The electric arc shorted to earth has very large impedance and voltage drop; it has limited fault current; make the overcurrent protective device akinesia or can not in time move to cut off the electricity supply; and the localized hyperthermia that the electric leakage arc of hundreds of milliampere produces can reach 2000 ° more than the C, the combustible around being enough to ignite and cause fire.Because consumer is distributed in each corner of buildings, as the electric leakage of system not being monitored and prevention and control, will have very large disaster hidden-trouble.
Summary of the invention
For the deficiency that exists in the technical background, of the present utility modelly provide a kind of processing speed fast, convenient and reliable, highly sensitive leakage fire alarming supervisory system.
Leakage fire alarming supervisory system of the present utility model, comprise leakage current detector, temperature sensor, A/D converter, signal amplifier, single-chip microcomputer, liquid crystal display, audible-visual annunciator, described leakage current detector, temperature sensor link to each other with A/D converter respectively, A/D converter, signal amplifier, single-chip microcomputer link to each other successively, and liquid crystal display, audible-visual annunciator link to each other with single-chip microcomputer respectively.
As preferably, described leakage current detector is chosen current transformer BH-0.66.
As preferably, described temperature sensor adopts the AD590 chip.
As preferably, described single-chip microcomputer adopts the AT89C51 chip.
The beneficial effects of the utility model: the leakage fire alarming supervisory system that the utility model provides has fast, convenient and reliable, the highly sensitive characteristics of processing speed.
Description of drawings
Fig. 1 is system chart of the present utility model.
Embodiment
A kind of leakage fire alarming monitoring as shown in Figure 1 is, comprise leakage current detector 1, temperature sensor 2, A/D converter 3, signal amplifier 4, single-chip microcomputer 5, liquid crystal display 6, audible-visual annunciator 7, described leakage current detector 1, temperature sensor 2 links to each other with A/D converter 3 respectively, A/D converter 3, signal amplifier 4, single-chip microcomputer 5 links to each other successively, liquid crystal display 6, audible-visual annunciator 7 links to each other with single-chip microcomputer 5 respectively, leakage current detector 1 is chosen current transformer BH-0.66, temperature sensor 2 adopts the AD590 chip, and single-chip microcomputer 5 adopts the AT89C51 chip.
After leakage current detector 1 acquisition electric current, electric leakage signal enter A/D converter 3 conversions, carry out sampling analysis through being input to single-chip microcomputer 5 after signal amplifier 4 amplifications, output shows and alerting signal accordingly.
The scope of temperature sensor 2 thermometrics is-55 ° of C ~+150 ° C, and temperature sensor 2 reaches signal single-chip microcomputer 5 after temperature signal is transferred to A/D converter 3 and signal amplifier 4 again, and detecting temperature surpasses preset value, and system will report to the police.
The leakage current test scope of the leakage fire alarming supervisory system that the utility model provides is 0 ~ 10A, and measuring error has fast, convenient and reliable, the highly sensitive characteristics of processing speed in 0.1mA in this scope.
Claims (4)
1. leakage fire alarming supervisory system, comprise leakage current detector, temperature sensor, A/D converter, signal amplifier, single-chip microcomputer, liquid crystal display, audible-visual annunciator, it is characterized in that: described leakage current detector, temperature sensor link to each other with A/D converter respectively, A/D converter, signal amplifier, single-chip microcomputer link to each other successively, and liquid crystal display, audible-visual annunciator link to each other with single-chip microcomputer respectively.
2. a kind of leakage fire alarming supervisory system according to claim 1, it is characterized in that: described leakage current detector is chosen current transformer BH-0.66.
3. a kind of leakage fire alarming supervisory system according to claim 1 is characterized in that: described temperature sensor employing AD590 chip.
4. a kind of leakage fire alarming supervisory system according to claim 1 is characterized in that: described single-chip microcomputer employing AT89C51 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320206629 CN203204766U (en) | 2013-04-23 | 2013-04-23 | Electric leakage fire alarming and monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320206629 CN203204766U (en) | 2013-04-23 | 2013-04-23 | Electric leakage fire alarming and monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203204766U true CN203204766U (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320206629 Expired - Fee Related CN203204766U (en) | 2013-04-23 | 2013-04-23 | Electric leakage fire alarming and monitoring system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203204766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018875A (en) * | 2016-07-22 | 2016-10-12 | 无锡信大气象传感网科技有限公司 | Atmospheric environment wind speed monitoring system |
-
2013
- 2013-04-23 CN CN 201320206629 patent/CN203204766U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018875A (en) * | 2016-07-22 | 2016-10-12 | 无锡信大气象传感网科技有限公司 | Atmospheric environment wind speed monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Huainan City Shiang Electric Appliance Co., Ltd. Assignor: Anhui University Of Science And Technology Contract record no.: 2014340000024 Denomination of utility model: Electric leakage fire alarming and monitoring system Granted publication date: 20130918 License type: Exclusive License Record date: 20140303 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20140423 |