CN202142145U - Alarming reset circuit of anti-theft alarm device - Google Patents
Alarming reset circuit of anti-theft alarm device Download PDFInfo
- Publication number
- CN202142145U CN202142145U CN201120278344U CN201120278344U CN202142145U CN 202142145 U CN202142145 U CN 202142145U CN 201120278344 U CN201120278344 U CN 201120278344U CN 201120278344 U CN201120278344 U CN 201120278344U CN 202142145 U CN202142145 U CN 202142145U
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- circuit
- reset
- alarm device
- theft alarm
- alarming
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Abstract
The utility model aims at providing an alarming reset circuit of an anti-theft alarm device, which can cancel alarm without turning off the anti-theft alarm device. The alarming reset circuit of the anti-theft alarm device is characterized by mainly comprising a reset level generating circuit (1) and an alarm control chip (U1). The reset level generating circuit (1) further comprises a triode (Q5) and a capacitor (C5). The collector electrode of the triode (Q5) is connected with one end of the capacitor (C5), and the other end of the capacitor (C5) is connected with a reset pin (9) of the alarm control chip (U1). The alarming reset circuit of the anti-theft alarm device has the advantages of avoiding frequent disconnection of a power supply, reducing impact of the power supply to the circuit, protecting components and prolonging service life of the anti-theft alarm device.
Description
Technical field
The utility model relates to a kind of burglar alarm, relates in particular to the infrared receiving circuit in a kind of burglar alarm.
Background technology
The sale great majority of electronic products such as relevant in the market mobile phone, digital camera, USB flash disk are to be placed on to sell in the sales counter, and portioned product is put into outer sale of sales counter and has also all connected burglar alarm.But present burglar alarm on the market needs the sales force to close in the past by hand after giving the alarm, and exhausts up to electric weight otherwise will give the alarm always.Sometimes; It not is because stealing that burglar alarm gives the alarm; Also be that just careless the or curiosity of client has been bumped connecting line, but will make this time the sales force past of having to burglar alarm closed or power supply is extracted, otherwise continuous chimes of doom can make client feel awkward; Have influence on client and sales force's mood, the atmosphere that influence is sold.But long-term frequent switch is perhaps extracted power supply by force, can the components and parts in the circuit be impacted, and influences the serviceable life of circuit.
The utility model content
The purpose of the utility model provides a kind of ann reset circuit of burglar alarm, can under the situation of not closing burglar alarm, remove warning.
The technical scheme of the utility model is following: the ann reset circuit in a kind of burglar alarm is characterized in that mainly being made up of with controlling alarm chip U1 reset level generative circuit 1; Also comprise triode Q5 and capacitor C 5 in the said reset level generative circuit 1; The collector of said triode Q5 links to each other with an end of capacitor C 5, and the other end of capacitor C 5 links to each other with the reset pin 9 of controlling alarm chip U1.
Further, also comprise the light emitting diode D5 of a LED in the said reset level generative circuit 1, be used for indicating circuit and whether be in alarm condition.
The beneficial effect of the utility model is: through the ann reset circuit in the newspaper burglar alarm, avoided the frequent operation of cutting off the electricity supply, reduced the impact of power supply to circuit, protected components and parts, increased the serviceable life of burglar alarm.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Wherein: 1, reset level generative circuit.
SpecificallyEmbodiment
Below in conjunction with accompanying drawing a kind of embodiment of the utility model is made brief description.
As shown in Figure 1, the ann reset circuit in a kind of burglar alarm mainly is made up of with controlling alarm chip U1 reset level generative circuit 1.
Among the said embodiment, the model of the Q5 of triode is 8050, and the model of controlling alarm chip U1 is 89C51.
In the said reset level generative circuit 1, resistance R 7 links to each other with the base stage B end of triode Q5.The emitter E end of said triode Q5 links to each other with resistance R 24, and the other end of resistance R 24 is connected with the positive pole of LED light emitting diode D5, the minus earth of LED light emitting diode D5.The collector C end of said triode Q5 is connected with the positive pole of capacitor C 5, and the negative pole of capacitor C 5 links to each other with 9 pins of controlling alarm chip U1.2 ends of resistance R 4 link to each other with 9 pins of controlling alarm chip U1 in the said reset level generative circuit 1,1 end ground connection.An end of resistance R 17 links to each other with the positive pole of 5V power supply in the said reset level generative circuit 1, and the other end links to each other with 5 pins of controlling alarm chip U1.An end ground connection of resistance R 25 in the said reset level generative circuit 1, the other end links to each other with 6 pins of controlling alarm chip U1.An end of resistance R 19 is connected with the positive pole of diode D3 in the said reset level generative circuit, and the other end links to each other with 4 pins of controlling alarm chip U1.The minus earth of said diode D3.
After stopping alerting signal and sending to resistance R 7, triode Q5 conducting forms low levels at the pin 9 of single-chip microcomputer, and single-chip microcomputer is resetted, and stops to report to the police.The advantage of design circuit is that the single-chip microcomputer code is simple like this, and the stability of single-chip microcomputer code simple program just obtains guaranteeing.
More than the embodiment of the utility model is specified, but said content is merely the preferred embodiment of the utility model, can not be considered to be used to limit the practical range of the utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the utility model.
Claims (2)
1. the ann reset circuit in the burglar alarm is characterized in that mainly being made up of reset level generative circuit (1) and controlling alarm chip (U1); Also comprise triode (Q5) and electric capacity (C5) in the said reset level generative circuit (1); The collector of said triode (Q5) links to each other with an end of electric capacity (C5), and the other end of electric capacity (C5) links to each other with the reset pin (9) of controlling alarm chip (U1).
2. according to the ann reset circuit in the said a kind of burglar alarm of claim 1, it is characterized in that also comprising in the said reset level generative circuit (1) light emitting diode (D5) of a LED, be used for indicating circuit and whether be in alarm condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120278344U CN202142145U (en) | 2011-08-02 | 2011-08-02 | Alarming reset circuit of anti-theft alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120278344U CN202142145U (en) | 2011-08-02 | 2011-08-02 | Alarming reset circuit of anti-theft alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202142145U true CN202142145U (en) | 2012-02-08 |
Family
ID=45553195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120278344U Expired - Fee Related CN202142145U (en) | 2011-08-02 | 2011-08-02 | Alarming reset circuit of anti-theft alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202142145U (en) |
-
2011
- 2011-08-02 CN CN201120278344U patent/CN202142145U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20140802 |
|
| EXPY | Termination of patent right or utility model |