CN204360540U - A kind of alert tone generator - Google Patents
A kind of alert tone generator Download PDFInfo
- Publication number
- CN204360540U CN204360540U CN201420831076.4U CN201420831076U CN204360540U CN 204360540 U CN204360540 U CN 204360540U CN 201420831076 U CN201420831076 U CN 201420831076U CN 204360540 U CN204360540 U CN 204360540U
- Authority
- CN
- China
- Prior art keywords
- circuit
- self
- power amplifying
- audio power
- checking
- 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
Links
Landscapes
- Alarm Systems (AREA)
Abstract
The utility model discloses a kind of alert tone generator, comprise casing, siren phonation circuit, audio power amplifying circuit, control circuit and self-checking circuit; Stating siren phonation circuit, audio power amplifying circuit, control circuit and self-checking circuit is arranged in casing; Siren phonation circuit, audio power amplifying circuit are connected with control circuit respectively with self-checking circuit; Siren phonation circuit is connected with audio power amplifying circuit; Self-checking circuit is connected the output voltage values for detecting audio power amplifying circuit with audio power amplifying circuit.The utility model adopts self-checking circuit detect the output voltage values of audio power amplifying circuit and show malfunction.Whether on-line checkingi alarm breaks down, and ensure that the normal use of alarm; This circuit structure is simple, cost is low and reliable and stable.
Description
Technical field
The utility model relates to a kind of panalarm, particularly the alert tone generator of one.
Background technology
At present, alert tone generator product category is a lot, and general alarm device does not all have self-checking circuit, just may find whether alarm damages when it is desired to be used, the normal use of the safety product that this situation can affect; Therefore, whether on-line checkingi alarm reaches that to be in normal condition very important.Therefore a kind of alarm that can carry out self-inspection is needed.
Utility model content
In view of this, technical problem to be solved in the utility model is to provide a kind of alert tone generator.
The purpose of this utility model is achieved in that
The alert tone generator of the one that the utility model provides, comprises casing, siren phonation circuit, audio power amplifying circuit, control circuit and self-checking circuit;
Described siren phonation circuit, audio power amplifying circuit, control circuit and self-checking circuit are arranged in casing;
Described siren phonation circuit, audio power amplifying circuit are connected with control circuit respectively with self-checking circuit;
Described siren phonation circuit is connected with audio power amplifying circuit;
Described self-checking circuit is connected the output voltage values for detecting audio power amplifying circuit with audio power amplifying circuit.
Further, described self-checking circuit comprises voltage self-checking circuit, bleeder circuit, reference voltage source, comparer and magnetic silicon controlled switch circuit;
Described voltage self-checking circuit is connected the output voltage values for obtaining audio power amplifying circuit two ends with audio power amplifying circuit; Described voltage self-checking circuit connects the first input end of comparer by bleeder circuit, described reference voltage source connects the second input end of comparer; Described magnetic silicon controlled switch circuit connects and between audio power amplifying circuit and siren phonation circuit; The control end of described magnetic silicon controlled switch circuit is connected the break-make for controlling magnetic silicon controlled switch circuit with the output terminal of comparer.
Further, described self-checking circuit is also provided with pilot lamp; Described pilot lamp is connected with control circuit, for showing off-position.
Further, described self-checking circuit also comprise by compressing switch, switch lever and elastic washer;
On described pressing switch-linear hybrid casing; Describedly by compressing switch casing junction is provided with elastic washer; Described by compressing switch for the on off operating mode by pressing down control gate-controlled switch control circuit; Described by compressing switch and being provided with preset clearance between casing, the gap width of described preset clearance is slightly less than the amount of elastic deformation of elastic washer.
The beneficial effects of the utility model are: the utility model adopts self-checking circuit to detect the output voltage values of audio power amplifying circuit and to show malfunction.Whether on-line checkingi alarm breaks down, and ensure that the normal use of alarm; This circuit structure is simple, cost is low and reliable and stable.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein:
The alert tone generator schematic diagram that Fig. 1 provides for the utility model embodiment;
The siren phonation circuit figure that Fig. 2 provides for the utility model embodiment.
Embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.Should be appreciated that preferred embodiment only in order to the utility model is described, instead of in order to limit protection domain of the present utility model.
As shown in the figure, the alert tone generator of the one that the utility model provides, comprises casing, siren phonation circuit, audio power amplifying circuit, control circuit and self-checking circuit;
Described siren phonation circuit, audio power amplifying circuit, control circuit and self-checking circuit are arranged in casing;
Described siren phonation circuit, audio power amplifying circuit are connected with control circuit respectively with self-checking circuit;
Described siren phonation circuit is connected with audio power amplifying circuit;
Described self-checking circuit is connected the output voltage values for detecting audio power amplifying circuit with audio power amplifying circuit.
Described self-checking circuit comprises voltage self-checking circuit, bleeder circuit, reference voltage source, comparer and magnetic silicon controlled switch circuit;
Described voltage self-checking circuit is connected the output voltage values for obtaining audio power amplifying circuit two ends with audio power amplifying circuit; Described voltage self-checking circuit connects the first input end of comparer by bleeder circuit, described reference voltage source connects the second input end of comparer; Described magnetic silicon controlled switch circuit connects and between audio power amplifying circuit and siren phonation circuit; The control end of described magnetic silicon controlled switch circuit is connected the break-make for controlling magnetic silicon controlled switch circuit with the output terminal of comparer.
Described self-checking circuit is also provided with pilot lamp; Described pilot lamp is connected with control circuit, for showing off-position.
Described self-checking circuit also comprises by compressing switch, switch lever and elastic washer;
On described pressing switch-linear hybrid casing; Describedly by compressing switch casing junction is provided with elastic washer; Described by compressing switch for the on off operating mode by pressing down control gate-controlled switch control circuit; Described by compressing switch and being provided with preset clearance between casing, the gap width of described preset clearance is slightly less than the amount of elastic deformation of elastic washer.
The circuit working principle of the alert tone generator that the present embodiment provides is as follows:
Siren phonation circuit is made up of sound-producing integrated circuit KD ~ 9561 and switch integrated circuit TWH8778, during work, exports alert tone signal by KD-9561, after the process of TWH8778 high-current switch integrated circuit is amplified, promotes loudspeaker and sends loud and clear chimes of doom.IC KD-9561 sounding IC, also can select KD-9562 sounding IC, and wiring makes it to send alert sound alerting signal on request.IC2 selects TWH8778 on-off circuit, and when supply voltage is 12V, loudspeaker BL should select the loudspeaker of 8 Ω, more than 3W or special horn loudspeaker; resistance 300 Ω ~ 510 Ω of current-limiting resistance R1; D2 selects 3V stabilivolt, and D1 is circuit protection diode, can select 1N4001.After circuit installation, as long as circuit is correct, generally can normally use without the need to debugging.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described the utility model by referring to preferred embodiment of the present utility model, but those of ordinary skill in the art is to be understood that, various change can be made to it in the form and details, and not depart from the spirit and scope that the utility model limits.
Claims (4)
1. warn a tone generator, it is characterized in that: comprise casing, siren phonation circuit, audio power amplifying circuit, control circuit and self-checking circuit;
Described siren phonation circuit, audio power amplifying circuit, control circuit and self-checking circuit are arranged in casing;
Described siren phonation circuit, audio power amplifying circuit are connected with control circuit respectively with self-checking circuit;
Described siren phonation circuit is connected with audio power amplifying circuit;
Described self-checking circuit is connected the output voltage values for detecting audio power amplifying circuit with audio power amplifying circuit.
2. alert tone generator according to claim 1, is characterized in that: described self-checking circuit comprises voltage self-checking circuit, bleeder circuit, reference voltage source, comparer and magnetic silicon controlled switch circuit;
Described voltage self-checking circuit is connected the output voltage values for obtaining audio power amplifying circuit two ends with audio power amplifying circuit; Described voltage self-checking circuit connects the first input end of comparer by bleeder circuit, described reference voltage source connects the second input end of comparer; Described magnetic silicon controlled switch circuit connects and between audio power amplifying circuit and siren phonation circuit; The control end of described magnetic silicon controlled switch circuit is connected the break-make for controlling magnetic silicon controlled switch circuit with the output terminal of comparer.
3. alert tone generator according to claim 1, is characterized in that: described self-checking circuit is also provided with pilot lamp; Described pilot lamp is connected with control circuit, for showing off-position.
4. alert tone generator according to claim 1, is characterized in that: described self-checking circuit also comprises by compressing switch, switch lever and elastic washer;
On described pressing switch-linear hybrid casing; Describedly by compressing switch casing junction is provided with elastic washer; Described by compressing switch for the on off operating mode by pressing down control gate-controlled switch control circuit; Described by compressing switch and being provided with preset clearance between casing, the gap width of described preset clearance is slightly less than the amount of elastic deformation of elastic washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420831076.4U CN204360540U (en) | 2014-12-25 | 2014-12-25 | A kind of alert tone generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420831076.4U CN204360540U (en) | 2014-12-25 | 2014-12-25 | A kind of alert tone generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204360540U true CN204360540U (en) | 2015-05-27 |
Family
ID=53261996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420831076.4U Expired - Fee Related CN204360540U (en) | 2014-12-25 | 2014-12-25 | A kind of alert tone generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204360540U (en) |
-
2014
- 2014-12-25 CN CN201420831076.4U patent/CN204360540U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20150262468A1 (en) | Power socket temperature alarm device | |
| CN204055563U (en) | A kind of vehicle-mounted wire fuse fault alert device and automobile | |
| CN101685961A (en) | Power supply circuit of audio frequency power amplifier | |
| CN204360540U (en) | A kind of alert tone generator | |
| CN204144605U (en) | A kind of anti-child gets an electric shock wiring board | |
| CN203299991U (en) | Smoke/temperature alarm control system for power distribution cabinet | |
| CN201198838Y (en) | Fan speed-regulating alarming device | |
| CN203321798U (en) | Self-checking device for running of water pump | |
| CN105788196A (en) | Alarm sound generator | |
| CN204258739U (en) | A kind of audio-frequency power amplifier output system | |
| CN203069718U (en) | Cable line detection device | |
| CN202394319U (en) | High-power alarm siren | |
| CN205620707U (en) | Utilize industrial automation equipment state reminding device of multistage sound loudspeaker | |
| CN202678924U (en) | Automobile short circuit protection circuit | |
| CN204008815U (en) | Main frame current monitoring comminutor state device | |
| CN206557304U (en) | Power failure detection circuit | |
| CN206021192U (en) | A kind of anticreep computer power supply with warning function | |
| CN203909975U (en) | Tyre production workshop anti-collision automatic prompt device | |
| CN204405750U (en) | A kind of gloves with operation with high pressure safe distance alarm function | |
| CN203192137U (en) | Memory type broken line detector | |
| CN203350989U (en) | Smog monitoring system | |
| CN2914187Y (en) | Computer temperature alarm system | |
| CN207057846U (en) | A kind of new pattern laser texture processing unit (plant) | |
| CN203110948U (en) | Alarm device for automobile controller | |
| CN205864716U (en) | A kind of power board with self-checking function |
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: 20150527 Termination date: 20161225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |