CN203134048U - Dual detection security protection circuit - Google Patents
Dual detection security protection circuit Download PDFInfo
- Publication number
- CN203134048U CN203134048U CN 201320084280 CN201320084280U CN203134048U CN 203134048 U CN203134048 U CN 203134048U CN 201320084280 CN201320084280 CN 201320084280 CN 201320084280 U CN201320084280 U CN 201320084280U CN 203134048 U CN203134048 U CN 203134048U
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- CN
- China
- Prior art keywords
- circuit
- security protection
- infrared receiving
- human body
- double check
- 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 a dual detection security protection circuit, comprising an infrared receiving circuit, a human body microwave detection circuit and a one-chip microcomputer control circuit. Output signals of the infrared receiving circuit are transmitted to an amplification frequency selection circuit; output signals of the amplification frequency selection circuit and the human body microwave detection circuit are transmitted to the one-chip microcomputer control circuit; output signals of the one-chip microcomputer control circuit are sent to an RS485 communication interface circuit. When one invades illegally, the dual detection security protection circuit combines the infrared receiving circuit and the human body microwave detection circuit; the one-chip microcomputer control circuit performs determination; data is transmitted to a computer terminal console host through a system bus; and system software displays information such as alarm address, orientation, etc.
Description
Technical field
The utility model relates to a kind of holding circuit, particularly be a kind of double check security protection holding circuit.
Background technology
A kind of infrared sensing signal of the most employing of traditional anti-theft warning circuit, easy like this causing reported by mistake or failed to report, and causes economic loss for people's property.
The utility model content
The purpose of this utility model is to provide a kind of double check security protection holding circuit.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of double check security protection holding circuit; comprise infrared receiving circuit, human body microwave testing circuit and single chip machine controlling circuit; the output signal of described infrared receiving circuit is transferred to the amplification frequency selection circuit; the output signal of described amplification frequency selection circuit and human body microwave testing circuit is sent to single chip machine controlling circuit, and the output signal of described single chip machine controlling circuit sends to the RS485 communication interface circuit.
Described infrared receiving circuit converts the infrared pulse signal that launches to corresponding electric signal by infrared receiving tube VD1, and this electric signal is sent to amplifier VT2.
Described amplification frequency selection circuit adopts BH-SK-1 module I C4.
Described human body microwave testing circuit is gathered signal by the antenna Y1 that TWH9250 Microwave Detector IC2 and output terminal thereof connect.
Described single chip machine controlling circuit adopts 2051 single-chip microcomputer IC1.
Described RS485 communication interface circuit drives chip IC 3 transmission data messages by 75176 interfaces and is sent to computer terminal control desk main frame.
By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: when people's illegal invasion, the utility model combines with human body microwave testing circuit by infrared receiving circuit, after single chip machine controlling circuit is judged, reach computer terminal control desk main frame by system bus, and by information such as system software display alarm address, orientation.
Description of drawings
Fig. 1 is frame assumption diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2; a kind of double check security protection holding circuit of the present utility model; comprise infrared receiving circuit 1, human body microwave testing circuit 2 and single chip machine controlling circuit 3; the output signal of described infrared receiving circuit 1 is transferred to amplifies frequency selection circuit 11; described amplification frequency selection circuit 11 is sent to single chip machine controlling circuit 3 with the output signal of human body microwave testing circuit 2, and the output signal of described single chip machine controlling circuit 3 sends to RS485 communication interface circuit 31.
Described human body microwave testing circuit 2 is gathered signal by the antenna Y1 that TWH9250 Microwave Detector IC2 and output terminal thereof connect, when human body is movable in effective investigative range, antenna Y1 just receives the microwave signal that human body reflects, after TWH9250 Microwave Detector IC2 internal circuit is handled, the 2nd pin output terminal of TWH9250 Microwave Detector IC2, can export a low level signal about about 10s of duration, this signal amplifies the back, exports high level signal through triode Q2, is input to the 18th pin I/O port of 2051 single-chip microcomputer IC1.
Described infrared receiving circuit 1 converts the infrared pulse signal that launches to corresponding electric signal by infrared receiving tube VD1, and this electric signal sent to amplifier VT2, after amplifying, amplifier VT2 amplifier is connected to the 1st pin input end of BH-SK-1 module I C4.BH-SK-1 module I C4 inside contains compositions such as amplifier, frequency selector, bistable circuit, and at this moment, during the about 5V of the 12nd pin of BH-SK-1 module I C4 output high level, the 19th pin that is input to 2051 single-chip microcomputer IC1 also is high level state.When the I/O end that reads its 18th, 19 pin as 2051 single-chip microcomputer IC1 all is high level, after 2051 single-chip microcomputer IC1 internal processes are judged, connect to form RS485 communication interface circuit 31 by 75176 interfaces driving chip IC 3 and 2051 single-chip microcomputer IC1, drive chip IC 2 by 2051 single-chip microcomputer IC1 to 75176 interfaces and send the driving command signal, after 75176 interfaces drive the decoding of chip IC 2 internal circuits, reach computer terminal control desk main frame by system bus, by information such as system software display alarm address, orientation.
Above-described only is a preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented, and every equalization of doing according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.
Claims (6)
1. double check security protection holding circuit; it is characterized in that: comprise infrared receiving circuit (1), human body microwave testing circuit (2) and single chip machine controlling circuit (3); the output signal of described infrared receiving circuit (1) is transferred to amplifies frequency selection circuit (11); described amplification frequency selection circuit (11) is sent to single chip machine controlling circuit (3) with the output signal of human body microwave testing circuit (2), and the output signal of described single chip machine controlling circuit (3) sends to RS485 communication interface circuit (31).
2. double check security protection holding circuit according to claim 1; it is characterized in that: described infrared receiving circuit (1) converts the infrared pulse signal that launches to corresponding electric signal by infrared receiving tube VD1, and this electric signal is sent to amplifier VT2.
3. double check security protection holding circuit according to claim 1 and 2 is characterized in that: described amplification frequency selection circuit (11) employing BH-SK-1 module I C4.
4. double check security protection holding circuit according to claim 1 is characterized in that: the antenna Y1 collection signal that described human body microwave testing circuit (2) is connected by TWH9250 Microwave Detector IC2 and output terminal thereof.
5. double check security protection holding circuit according to claim 1 is characterized in that: described single chip machine controlling circuit (3) employing 2051 single-chip microcomputer IC1.
6. double check security protection holding circuit according to claim 1 is characterized in that: described RS485 communication interface circuit (31) drives chip IC 3 by 75176 interfaces and sends data messages and be sent to computer terminal control desk main frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320084280 CN203134048U (en) | 2013-02-21 | 2013-02-21 | Dual detection security protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320084280 CN203134048U (en) | 2013-02-21 | 2013-02-21 | Dual detection security protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203134048U true CN203134048U (en) | 2013-08-14 |
Family
ID=48942002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320084280 Expired - Fee Related CN203134048U (en) | 2013-02-21 | 2013-02-21 | Dual detection security protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203134048U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105096496A (en) * | 2015-07-29 | 2015-11-25 | 国网技术学院 | Safety early-warning system for power training station based on infrared detection, and working method of safety early-warning system |
-
2013
- 2013-02-21 CN CN 201320084280 patent/CN203134048U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105096496A (en) * | 2015-07-29 | 2015-11-25 | 国网技术学院 | Safety early-warning system for power training station based on infrared detection, and working method of safety early-warning system |
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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: 20130814 Termination date: 20140221 |