CN104050775A - Reminder preventing people from being lost - Google Patents
Reminder preventing people from being lost Download PDFInfo
- Publication number
- CN104050775A CN104050775A CN201410262596.2A CN201410262596A CN104050775A CN 104050775 A CN104050775 A CN 104050775A CN 201410262596 A CN201410262596 A CN 201410262596A CN 104050775 A CN104050775 A CN 104050775A
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- China
- Prior art keywords
- integrated circuit
- low
- reminder
- chip
- receiver
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- 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.)
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Abstract
The invention relates to a reminder preventing people from being lost. The reminder comprises an emitter and a receiver. The receiver is composed of a low-voltage frequency modulation receiver body and a music integrated circuit. The low-voltage frequency modulation receiver body comprises a mixer circuit composed of a chip MC3367, a local oscillator crystal X1, a three-end ceramic filter X2 and a three-end ceramic filter X3. A CW930 chip is adopted in the music integrated circuit. The structure combining an integrated circuit chip and discrete components is adopted, so that the reminder improves warning accuracy and is simple in structure and low in cost.
Description
Technical field
The present invention relates to application of electronic technology field, the reminiscences that particularly a kind of child of preventing or pet go astray from the group.
Background technology
Electronic alarm is widespread use in a lot of fields, is preventing existing similar products aspect old man/child or article loss, but exists out of true, the shortcoming such as impracticable.While nearby playing such as child, reminiscences also can be reported to the police again and again, and how obtaining reminding accurately becomes a technical barrier urgently to be resolved hurrily.
Summary of the invention
In view of above the deficiencies in the prior art, the invention provides a kind of simple in structure, anti-reminiscences of going astray from the group that warning accuracy is high, for preventing wandering away of child or pet.
Technical scheme of the present invention is: a kind of anti-reminiscences of going astray from the group, comprise transmitter and receiver two parts, it is characterized in that: receiver is comprised of low-voltage fremodyne and music integrated circuit, described low-voltage fremodyne comprises the mixting circuit that chip MC3367, local oscillator crystal X1, three end ceramic filter X2, X3 form.
Preferably, described music integrated circuit adopts CW930 chip.
Preferably, described transmitter is comprised of LF oscillator, high frequency oscillator and antenna.
The present invention reaches following beneficial effect: adopt the structure of integrated circuit (IC) chip and discrete component combination, improved the accuracy of reporting to the police, simple in structure, cost is low.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention transmitter theory diagram;
Fig. 2 is embodiment of the present invention receiver theory diagram;
Fig. 3 is low-voltage fremodyne circuit diagram in Fig. 2 embodiment.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Anti-went astray reminder comprise that child or pet carry transmitter and the receiver that carries of adult.Transmitter principle as shown in Figure 1, comprises LF oscillator, high frequency oscillator and emitting antenna, and the output of LF oscillator is used for modulating the signal of high frequency oscillator, and the high-frequency signal being adjusted to is launched through miniature antenna.LF oscillator adopts time-base integrated circuit chip NE555.
Receiver comprises low-voltage fremodyne and music integrated circuit, as shown in Figure 2.In physical circuit, low-voltage fremodyne adopts MC3367 and peripheral circuit, CF signal is sent into the inner mixing of the 3rd pin of MC3367 after by antenna reception, crystal X1 and internal circuit form local oscillator, the intermediate-freuqncy signal that mixing generates is exported by 2 pin, after three end ceramic filter X3 frequency-selectings, by 23 pin, entering into the first intermediate level circuit amplifies, then from 25 pin outputs and again by three end ceramic filter X2 frequency-selectings, entering afterwards square circuit in 28 pin second amplifies, signal after amplification finally enters demodulator circuit and carries out frequency demodulation, the low frequency signal of demodulation gained is exported from 10 pin after Hyblid Buffer Amplifier.
When receiver is received the signal of transmitter transmitting, the 10 pin output low levels of MC3367, music integrated circuit CW930 does not work, and loudspeaker is sounding not.When the distance of leaving adult when child or pet surpasses 10m, receiver can not receive the signal that transmitter sends, and the 10 pin outputs of MC3367 become high level, the music integrated circuit work that is triggered, and loudspeaker sends chimes of doom, reminds child adult or pet to walk far.
Be more than better embodiment of the present invention, but protection scope of the present invention is not limited to this.Any those of ordinary skill in the art are in the disclosed technical scope of the present invention, and the conversion of expecting without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore protection scope of the present invention should be as the criterion with the protection domain that claim was limited.
Claims (3)
1. prevent going astray from the group reminiscences for one kind, comprise transmitter and receiver two parts, it is characterized in that: receiver is comprised of low-voltage fremodyne and music integrated circuit, described low-voltage fremodyne comprises the mixting circuit that chip MC3367, local oscillator crystal X1, three end ceramic filter X2, X3 form.
2. the anti-reminiscences of going astray from the group according to claim 1, is characterized in that: described music integrated circuit adopts CW930 chip.
3. the anti-reminiscences of going astray from the group according to claim 1, is characterized in that: described transmitter is comprised of LF oscillator, high frequency oscillator and antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262596.2A CN104050775A (en) | 2014-06-13 | 2014-06-13 | Reminder preventing people from being lost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262596.2A CN104050775A (en) | 2014-06-13 | 2014-06-13 | Reminder preventing people from being lost |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104050775A true CN104050775A (en) | 2014-09-17 |
Family
ID=51503532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410262596.2A Pending CN104050775A (en) | 2014-06-13 | 2014-06-13 | Reminder preventing people from being lost |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104050775A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2257392Y (en) * | 1996-03-28 | 1997-07-02 | 杨勇民 | Separating alarm |
| US6326891B1 (en) * | 2000-02-22 | 2001-12-04 | Ching-Chi Lin | Warning device for preventing child from being lost |
| CN202033869U (en) * | 2011-01-30 | 2011-11-09 | 金龙机电股份有限公司 | Anti-loss device |
| CN202454037U (en) * | 2012-02-09 | 2012-09-26 | 郑州大学 | Anti-lost system for child |
| CN202472860U (en) * | 2012-02-24 | 2012-10-03 | 吴敏 | Anti-loss reminding alarm device for accompanying children and articles |
| US20140009283A1 (en) * | 2002-05-08 | 2014-01-09 | Resource Consortium Limited | Method and system for remotely monitoring a user |
| CN103700211A (en) * | 2013-11-27 | 2014-04-02 | 南通新世纪机电有限公司 | Alarm device capable of preventing people from getting lost |
-
2014
- 2014-06-13 CN CN201410262596.2A patent/CN104050775A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2257392Y (en) * | 1996-03-28 | 1997-07-02 | 杨勇民 | Separating alarm |
| US6326891B1 (en) * | 2000-02-22 | 2001-12-04 | Ching-Chi Lin | Warning device for preventing child from being lost |
| US20140009283A1 (en) * | 2002-05-08 | 2014-01-09 | Resource Consortium Limited | Method and system for remotely monitoring a user |
| CN202033869U (en) * | 2011-01-30 | 2011-11-09 | 金龙机电股份有限公司 | Anti-loss device |
| CN202454037U (en) * | 2012-02-09 | 2012-09-26 | 郑州大学 | Anti-lost system for child |
| CN202472860U (en) * | 2012-02-24 | 2012-10-03 | 吴敏 | Anti-loss reminding alarm device for accompanying children and articles |
| CN103700211A (en) * | 2013-11-27 | 2014-04-02 | 南通新世纪机电有限公司 | Alarm device capable of preventing people from getting lost |
Non-Patent Citations (1)
| Title |
|---|
| 阎光明: ""低电压调频接收器MC3367的原理及应用"", 《国外电子元器件》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140917 |