CN203279178U - Loudspeaker fault detection apparatus - Google Patents
Loudspeaker fault detection apparatus Download PDFInfo
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- CN203279178U CN203279178U CN2013202432481U CN201320243248U CN203279178U CN 203279178 U CN203279178 U CN 203279178U CN 2013202432481 U CN2013202432481 U CN 2013202432481U CN 201320243248 U CN201320243248 U CN 201320243248U CN 203279178 U CN203279178 U CN 203279178U
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- loudspeaker
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- current detection
- loud speaker
- leakage resistance
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Abstract
The utility model discloses a loudspeaker fault detection apparatus comprising a power amplifier output module, a loudspeaker, a current sensing resistor, a current detection module and a microprocessor module, wherein the power amplifier output module and the two ends of the loudspeaker are connected to form a loop, the current sensing resistor is in series connection with the loop, the current detection module is in parallel connection with the current sensing resistor, and the output terminal of the current detection module is connected with the microprocessor module. The provided loudspeaker fault detection apparatus can give feedbacks of loudspeaker working states real time and thus can be widely applied to mountain torrent early warning equipment.
Description
Technical field
The utility model relates to the public broadcasting technical field, specifically a kind of loudspeaker faults checkout gear that is applied in the mountain torrents source of early warning.
Background technology
Mountain torrents early warning main frame can directly connect loud speaker with the output of multichannel power amplifier, but the installation site of loud speaker is common not near the installation site of mountain torrents early warning main frame, and even the control room can be controlled main frame in the strange land by wireless.This following situation will occur: even 1, monitor loudspeaker at the machine room main frame broadcast is arranged, can't know that also whether the loud speaker of outdoor far-end is in normal play.Can't guarantee especially when 2, controlling by wireless strange land that the information that will play normally broadcasts away.Therefore need monitoring speaker operation state---: short circuit, open circuit or work.Need to there be abnormality to remind when speaker operation is abnormal, present main frame otherwise just there is no the loudspeaker faults measuring ability, otherwise be exactly to adopt independently to detect the loop, whether normally manually detect loud speaker, after test finishes, more manually switches back from test loop and broadcast the loop.So just can not feed back in real time loudspeaker status and need routine test not exist extremely to guarantee loud speaker.
Summary of the invention
The utility model is for the problem of above-mentioned existence, and a kind of loudspeaker faults checkout gear that can the Real-time Feedback loudspeaker status is provided.
The utility model takes following technical scheme to be achieved for achieving the above object:
A kind of loudspeaker faults checkout gear comprises power amplifier output module and loud speaker, and described power amplifier output module and loud speaker two ends are connected to form the loop; Also comprise inspection leakage resistance, current detection module and microprocessor module, described inspection leakage resistance is series in described loop, and described current detection module is in parallel with described inspection leakage resistance, and described current detection module signal output part is connected with microprocessor module.
Above-mentioned microprocessor is by serial ports or wireless connections computer terminals.
Inspection leakage resistance size is by the decision of loud speaker loop current size, and the inspection leakage resistance of the larger use of electric current should be less, is preferably 0.1 Ω～1 Ω.。
Described current detection module just as at ordinary times for detection of the current detection circuit of source current size, the preferred circuit of single-chip integrated MAX4173 of described current detection module.The output signal multiplication factor is selected according to actual conditions.
The microcontroller model does not limit, as long as the analog-to-digital conversion interface that satisfies required precision is arranged, as STC12C5A60S2.
Current detection module is parallel to the inspection leakage resistance, detects the electric current in loud speaker loop.According to the opening circuit of size of current judgement loud speaker loop, short circuit and normal operation.It is that return circuit is excessive that electric current surpasses the expection maximum, can judge the short circuit of loud speaker possibility; Electric current is zero, is still zero and can judges that loud speaker may open circuit after regulating volume, and should be loop open circuit strictly speaking, may be transmission line opens circuit, this moment, loud speaker also can't work; Electric current is the height fluctuations in scope, illustrates that loud speaker is just in normal play.
When power amplifier was normally exported, electric current flow through the inspection leakage resistance that seals in the loop, at little pressure reduction of inspection leakage resistance two ends generation.Because understand some power loss on the inspection leakage resistance, so it is the smaller the better to examine in theory leakage resistance.This pressure reduction is exported to microprocessor by the current detection module signal output part after amplifying.The data analysis of microprocessor to receiving, and analysis result being uploaded on the computer end application program by serial ports or the mode such as wireless, the user learns the operating state of loud speaker whereby---short circuit, open circuit, the volume when working.
The beneficial effects of the utility model are as follows: inspection leakage resistance of series connection in the loud speaker loop, the inspection leakage resistance is parallel with current detection module, detect the electric current in loud speaker loop by current detection module, according to size of current judgement speaker operation state, can in real time according to loud speaker size of current feedback speaker operation state, reflect simultaneously the loudspeaker sound size.
Description of drawings
Fig. 1 is loudspeaker faults checkout gear circuit diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
The utility model embodiment is as shown in Figure 1: a kind of loudspeaker faults checkout gear, comprise power amplifier output module and loud speaker, and power amplifier output module "+" end, "-" end are connected to form the loud speaker loop with loud speaker two ends respectively; The inspection leakage resistance is series in above-mentioned loud speaker loop, power amplifier output "+" termination inspection leakage resistance one end, other termination loud speaker one end of inspection leakage resistance, another termination power amplifier output "-" end of loud speaker.Current detection module two input pins are received respectively inspection leakage resistance two ends, are equivalent to current detection module and to examine leakage resistance in parallel.The output signal of current detection module outputs to the analog-to-digital conversion interface ADC of microcontroller from the Vout end.Inspection leakage resistance size determines by loud speaker loop current size, and the inspection leakage resistance of the larger use of electric current should be less, usually at 0.1 Ω between 1 Ω.Current detection module can use circuit of single-chip integrated MAX4173 to realize, the output signal multiplication factor is selected according to actual conditions.The microcontroller model does not limit, as long as the analog-to-digital conversion interface that satisfies required precision, for example STC12C5A60S2. are arranged
Current detection module is parallel to the inspection leakage resistance, detects the electric current in loud speaker loop.According to the opening circuit of size of current judgement loud speaker loop, short circuit and normal operation.It is that return circuit is excessive that electric current surpasses the expection maximum, can judge the short circuit of loud speaker possibility; Electric current is zero, is still zero and can judges that loud speaker may open circuit after regulating volume, and should be loop open circuit strictly speaking, may be transmission line opens circuit, this moment, loud speaker also can't work; Electric current is the height fluctuations in scope, illustrates that loud speaker is just in normal play.
When power amplifier was normally exported, electric current flow through the inspection leakage resistance that seals in the loop, at little pressure reduction of inspection leakage resistance two ends generation.Because understand some power loss on the inspection leakage resistance, so it is the smaller the better to examine in theory leakage resistance.This pressure reduction is through being exported to the ADC of microprocessor by current detection module signal output part Vout end after amplifying, multiplication factor is determined by the concrete model of the MAX4173 that current detection circuit uses.The data analysis that microprocessor samples ADC, and analysis result being uploaded on the computer end application program by serial ports or the mode such as wireless, the user learns the operating state of loud speaker whereby---short circuit, open circuit, the volume when working.
The above person of thought, it is only the preferred embodiment of the utility model, when not limiting with this scope of the utility model enforcement, the content of namely generally putting down in writing according to the utility model claim and utility model specification has been done simple equivalence and has been changed and modify, within all still belonging to the utility model claim institute covering scope.In addition, summary part and title are only the use of auxiliary patent document search, are not the interest field that limits the utility model.
Claims (4)
1. loudspeaker faults checkout gear, comprise power amplifier output module and loud speaker, described power amplifier output module and loud speaker two ends are connected to form the loop, it is characterized in that, also comprise inspection leakage resistance, current detection module and microprocessor module, described inspection leakage resistance is series in described loop, and described current detection module is in parallel with described inspection leakage resistance, and described current detection module signal output part is connected with microprocessor module.
2. loudspeaker faults checkout gear according to claim 1, is characterized in that, described microprocessor is by serial ports or wireless connections computer terminals.
3. loudspeaker faults checkout gear according to claim 1, is characterized in that, described inspection leakage resistance is 0.1 Ω～1 Ω.
4. loudspeaker faults checkout gear according to claim 1, is characterized in that, described current detection module is circuit of single-chip integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202432481U CN203279178U (en) | 2013-05-08 | 2013-05-08 | Loudspeaker fault detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202432481U CN203279178U (en) | 2013-05-08 | 2013-05-08 | Loudspeaker fault detection apparatus |
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| CN203279178U true CN203279178U (en) | 2013-11-06 |
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| CN2013202432481U Expired - Fee Related CN203279178U (en) | 2013-05-08 | 2013-05-08 | Loudspeaker fault detection apparatus |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306926A (en) * | 2015-10-09 | 2016-02-03 | 湖南康通电子科技有限公司 | Online monitoring method for audio power amplifier and system thereof |
| CN105307097A (en) * | 2015-10-09 | 2016-02-03 | 湖南康通电子科技有限公司 | Online monitoring method for audio power amplifier and system thereof |
| CN105721986A (en) * | 2016-05-06 | 2016-06-29 | 深圳精拓创新科技有限公司 | Power amplifier circuit and loudspeaker system |
| CN107087162A (en) * | 2017-06-05 | 2017-08-22 | 广东小天才科技有限公司 | Camera fault detection method and fault detection device |
| CN107396273A (en) * | 2017-06-23 | 2017-11-24 | 深圳市泰和安科技有限公司 | A kind of detection circuit and its detection method and device for broadcasting audio amplifier |
| CN108933985A (en) * | 2017-05-25 | 2018-12-04 | 湖北文理学院 | A kind of piezoelectric ceramic piece differentiation circuit |
| CN109963247A (en) * | 2017-12-25 | 2019-07-02 | 长城汽车股份有限公司 | Horn assembly detection circuit and horn assembly detection method |
| CN111263288A (en) * | 2020-03-20 | 2020-06-09 | 深圳市元征科技股份有限公司 | Loudspeaker state diagnosis system, method, device and medium |
| WO2021110016A1 (en) * | 2019-12-02 | 2021-06-10 | 维沃移动通信有限公司 | Electronic device and sound volume adjustment method therefor |
| CN114679675A (en) * | 2022-03-23 | 2022-06-28 | 北京交大思源科技有限公司 | Automatic detection device and method for analog loudspeaker |
-
2013
- 2013-05-08 CN CN2013202432481U patent/CN203279178U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105307097A (en) * | 2015-10-09 | 2016-02-03 | 湖南康通电子科技有限公司 | Online monitoring method for audio power amplifier and system thereof |
| CN105306926A (en) * | 2015-10-09 | 2016-02-03 | 湖南康通电子科技有限公司 | Online monitoring method for audio power amplifier and system thereof |
| CN105721986A (en) * | 2016-05-06 | 2016-06-29 | 深圳精拓创新科技有限公司 | Power amplifier circuit and loudspeaker system |
| CN105721986B (en) * | 2016-05-06 | 2019-08-27 | 深圳精拓创新科技有限公司 | Power amplifier and speaker system |
| CN108933985A (en) * | 2017-05-25 | 2018-12-04 | 湖北文理学院 | A kind of piezoelectric ceramic piece differentiation circuit |
| CN107087162B (en) * | 2017-06-05 | 2019-03-15 | 广东小天才科技有限公司 | Camera fault detection method and fault detection device |
| CN107087162A (en) * | 2017-06-05 | 2017-08-22 | 广东小天才科技有限公司 | Camera fault detection method and fault detection device |
| CN107396273A (en) * | 2017-06-23 | 2017-11-24 | 深圳市泰和安科技有限公司 | A kind of detection circuit and its detection method and device for broadcasting audio amplifier |
| CN107396273B (en) * | 2017-06-23 | 2020-07-07 | 深圳市泰和安科技有限公司 | Detection circuit of broadcast sound box and detection method and device thereof |
| CN109963247A (en) * | 2017-12-25 | 2019-07-02 | 长城汽车股份有限公司 | Horn assembly detection circuit and horn assembly detection method |
| WO2021110016A1 (en) * | 2019-12-02 | 2021-06-10 | 维沃移动通信有限公司 | Electronic device and sound volume adjustment method therefor |
| CN111263288A (en) * | 2020-03-20 | 2020-06-09 | 深圳市元征科技股份有限公司 | Loudspeaker state diagnosis system, method, device and medium |
| CN114679675A (en) * | 2022-03-23 | 2022-06-28 | 北京交大思源科技有限公司 | Automatic detection device and method for analog loudspeaker |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: OUYANG JUNZI Document name: Notification that Application Deemed not to be Proposed |
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| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510663 Tianhe District City, Guangdong Province, Gaotang New District, the eastern part of the International Incubator, the 05 floor and the 4 floor of the northeast side of the 3 Patentee after: GUANGDONG AEBELL TECHNOLOGY GROUP CO.,LTD. Address before: 510663 Tianhe District City, Guangdong Province, Gaotang New District, the eastern part of the International Incubator, the 05 floor and the 4 floor of the northeast side of the 3 Patentee before: Guangdong United States electric Baer Technology Group Co.,Ltd. Address after: 510663 Tianhe District City, Guangdong Province, Gaotang New District, the eastern part of the International Incubator, the 05 floor and the 4 floor of the northeast side of the 3 Patentee after: Guangdong United States electric Baer Technology Group Co.,Ltd. Address before: 510663 Tianhe District City, Guangdong Province, Gaotang New District, the eastern part of the International Incubator, the 05 floor and the 4 floor of the northeast side of the 3 Patentee before: GUANGZHOU AEBELL ELECTRICAL TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20210508 |