CN201716817U - Alarm used in danger areas - Google Patents
Alarm used in danger areas Download PDFInfo
- Publication number
- CN201716817U CN201716817U CN2010202282226U CN201020228222U CN201716817U CN 201716817 U CN201716817 U CN 201716817U CN 2010202282226 U CN2010202282226 U CN 2010202282226U CN 201020228222 U CN201020228222 U CN 201020228222U CN 201716817 U CN201716817 U CN 201716817U
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- CN
- China
- Prior art keywords
- chip microcomputer
- alarm
- model
- utility
- sounding module
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an alarm used in danger areas, which comprises a single chip microcomputer, a microwave detection module and an alarm circuit. The microwave detection module, the single chip microcomputer and the alarm circuit are connected in sequence. Compared with the prior art, the alarm provided by the utility model has the advantages of high safety, convenient installation, small volume, and so on.
Description
Technical field
The utility model relates to a kind of warning device, especially relates to a kind of alarm that is used for the hazardous location.
Background technology
As everyone knows, have relatively high expectations to periphery and personnel all around in the zone of storage of hazardous product, careless slightly, just can cause inconceivable consequence.In the past, show the pattern caution and the caution of listing greatly, effect is also not obvious.This device can very be given caution intuitively, reaches due purpose.
Summary of the invention
The purpose of this utility model be exactly provide a kind of in order to overcome the defective that above-mentioned prior art exists and safely, convenient install, the alarm that is used for the hazardous location that volume is little.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of alarm that is used for the hazardous location is characterized in that, this device comprises single-chip microcomputer, microwave sounding module, warning circuit, and described microwave sounding module, single-chip microcomputer, warning circuit connect successively.
Described single-chip microcomputer is by the STC89C51RD single-chip microcomputer.
Described microwave sounding module is a TX982 microwave sounding module.
Described warning circuit comprises resistance, triode, hummer, power supply, the base stage of described triode is connected with single-chip microcomputer by resistance, the grounded emitter of described triode, the collector of described triode is connected with hummer, and described hummer is connected with power supply.
Compared with prior art, the utlity model has following advantage:
1) safe;
2) easy for installation;
3) volume is little.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the control flow chart of the utility model instantiation;
Fig. 3 is a circuit diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
As shown in Figure 1, the utility model is a kind of alarm that is used for the hazardous location, and this device comprises single-chip microcomputer 2, microwave sounding module 1, warning circuit 3, and described microwave sounding module 1, single-chip microcomputer 2, warning circuit 3 connect successively.Single-chip microcomputer 2 is by the STC89C51RD single-chip microcomputer, and described microwave sounding module 1 is a TX982 microwave sounding module.
When TX982 microwave module 1 has detected the people in the hazardous location activity, signal is delivered to single-chip microcomputer 2 handle, through judging, export an electric signal, to reach the purpose that drives warning circuit 3.
As shown in Figure 3, be circuit diagram of the present utility model, described warning circuit comprises resistance R 1, triode, hummer U1, power supply, the base stage of described triode is connected with single-chip microcomputer 2 by resistance R 1, the grounded emitter of described triode, the collector of described triode is connected with hummer U1, and described hummer U1 is connected with power supply.
Control flow chart of the present utility model as shown in Figure 2, now it is done an introduction on the principle: at first press start button, system powers on, each port initialization (step 101) has corresponding low level signal output after the TX982 module starts, detected by the P1.0 mouth of single-chip microcomputer, whether low level signal (step 102) is arranged, for preventing false alarm, detect whether be in normal operating conditions, time-delay 10ms (step 103).Detect whether low level signal (step 104) is arranged, have low level signal then not report to the police, as be high level, then output is corresponding reports to the police.
The utility model principle is: utilize doppler shift effect promptly when having relative motion between ultrasound source and the propagation medium, the frequency of frequency that receiver receives and ultrasound source emission is with different, even if there is small activity also can produce frequency deviation ± Δ f.
Claims (4)
1. an alarm that is used for the hazardous location is characterized in that, this device comprises single-chip microcomputer, microwave sounding module, warning circuit, and described microwave sounding module, single-chip microcomputer, warning circuit connect successively.
2. a kind of alarm that is used for the hazardous location according to claim 1 is characterized in that described single-chip microcomputer is by the STC89C51RD single-chip microcomputer.
3. a kind of alarm that is used for the hazardous location according to claim 1 is characterized in that, described microwave sounding module is a TX982 microwave sounding module.
4. a kind of alarm that is used for the hazardous location according to claim 1, it is characterized in that, described warning circuit comprises resistance, triode, hummer, power supply, the base stage of described triode is connected with single-chip microcomputer by resistance, the grounded emitter of described triode, the collector of described triode is connected with hummer, and described hummer is connected with power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202282226U CN201716817U (en) | 2010-06-17 | 2010-06-17 | Alarm used in danger areas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202282226U CN201716817U (en) | 2010-06-17 | 2010-06-17 | Alarm used in danger areas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201716817U true CN201716817U (en) | 2011-01-19 |
Family
ID=43462822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202282226U Expired - Fee Related CN201716817U (en) | 2010-06-17 | 2010-06-17 | Alarm used in danger areas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201716817U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915611A (en) * | 2012-10-30 | 2013-02-06 | 成都江法科技有限公司 | Door and window burglar alarm based on Doppler effect |
| CN103337131A (en) * | 2013-07-25 | 2013-10-02 | 国家电网公司 | Intelligent warning device |
| CN104077879A (en) * | 2013-09-02 | 2014-10-01 | 国家电网公司 | Electrification alarm |
-
2010
- 2010-06-17 CN CN2010202282226U patent/CN201716817U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915611A (en) * | 2012-10-30 | 2013-02-06 | 成都江法科技有限公司 | Door and window burglar alarm based on Doppler effect |
| CN103337131A (en) * | 2013-07-25 | 2013-10-02 | 国家电网公司 | Intelligent warning device |
| CN104077879A (en) * | 2013-09-02 | 2014-10-01 | 国家电网公司 | Electrification alarm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20130617 |