CN110557712A - Loudspeaker fault detection device - Google Patents
Loudspeaker fault detection device Download PDFInfo
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- CN110557712A CN110557712A CN201910902978.XA CN201910902978A CN110557712A CN 110557712 A CN110557712 A CN 110557712A CN 201910902978 A CN201910902978 A CN 201910902978A CN 110557712 A CN110557712 A CN 110557712A
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- 238000001514 detection method Methods 0.000 title claims abstract description 66
- 230000007257 malfunction Effects 0.000 claims abstract description 13
- 230000035945 sensitivity Effects 0.000 claims description 17
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 7
- 230000035939 shock Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
A speaker malfunction detection apparatus for detecting speaker malfunction, comprising: the detection module is used for detecting the vibration state of the loudspeaker and outputting a corresponding vibration level; the microprocessor module is connected with the output end of the detection module and is used for detecting the vibration level transmitted by the detection module and outputting a corresponding control signal; the alarm module is connected with the microprocessor module and used for giving an alarm after receiving the control signal; and the power supply module is used for supplying power to the device. The vibration state of the installation carrier is collected through the detection module, the loudspeaker faults are identified, the loudspeaker faults are not easily influenced by the surrounding environment, and meanwhile, the specific loudspeaker faults can be identified through different loudspeaker areas of the detection module arranged on the installation carrier. In addition, an alarm module is added, so that the occurrence of the fault can be intuitively known in real time.
Description
Technical Field
The invention belongs to the field of loudspeakers, and particularly relates to a loudspeaker fault detection device.
Background
with the advancement and development of science and technology, the functions of multimedia devices such as televisions, displays, notebooks and the like are more powerful, the market demand for the multimedia devices is larger and larger, and the number of the multimedia devices in most households is far more than one. In addition to the increase of the market demand, manufacturers are also expanding the production scale of multimedia devices. The speaker is an important component of the multimedia device, and the quality of the speaker directly affects the viewing experience of viewers, so that the speaker is especially important to be detected when the device leaves a factory.
however, when the speakers are detected, it is difficult to manually detect whether the speakers are turned on at the maximum volume or in a noisy environment when a plurality of multimedia devices are turned on at the same time.
Disclosure of Invention
the present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a loudspeaker fault detection device which is simple in structure and solves the problem of identifying the quality of a loudspeaker under a noisy condition.
The speaker fault detection device according to the embodiment of the present invention includes: the detection module is used for detecting the vibration state of the loudspeaker on the mounting carrier of the loudspeaker and outputting a corresponding vibration level; the microprocessor module is connected with the output end of the detection module and is used for detecting the vibration level transmitted by the detection module and outputting a corresponding control signal; the alarm module is connected with the microprocessor module and used for giving an alarm after receiving the control signal; and the power supply module is used for supplying power to the device.
the loudspeaker fault detection device provided by the embodiment of the invention at least has the following technical effects: through the collection of detection module to installation carrier vibration state to realized the discernment to the speaker trouble through microprocessor module, compare in the tradition have better superiority through sound identification, be difficult to receive surrounding environment's influence, through arranging the different speaker areas of detection module on the installation carrier simultaneously, can discern specific which speaker trouble. In addition, an alarm module is added, so that the occurrence of the fault can be intuitively known in real time.
According to some embodiments of the invention, the detection module comprises: the working voltage end of the vibration sensor is connected with the external power supply, and the output end of the vibration sensor is connected with the microprocessor module; the first resistor is connected between the grounding end of the vibration sensor and the ground wire; the second resistor is connected between the output end of the vibration sensor and the ground wire; and the first capacitor is connected with the second resistor in parallel.
according to some embodiments of the invention, the alarm module comprises: one end of the third resistor is connected with the microprocessor module; and the cathode of the first light-emitting diode is connected with the other end of the third resistor, and the anode of the first light-emitting diode is connected with the external power supply.
according to some embodiments of the invention, the speaker failure detection apparatus further comprises: and the sensitivity adjusting module is provided with a first input end connected with the output end of the detection module, a second input end connected with the external power supply, a working voltage end connected with the external power supply and an output end connected with the microprocessor module, and is used for adjusting the sensitivity of the vibration level.
according to some embodiments of the invention, the sensitivity adjustment module comprises: the output end of the operational amplifier unit is connected with the microprocessor module, the working voltage end of the operational amplifier unit is connected with the external power supply and is provided with two input ends, and the first input end of the operational amplifier unit is connected with the output end of the detection module; the first connecting end of the sliding rheostat is connected with the external power supply, the second connecting end of the sliding rheostat is connected with the ground wire, and the sliding end of the sliding rheostat is connected with the second input end of the operational amplifier unit; and the fourth resistor is connected between the output end of the operational amplifier unit and the working voltage end.
according to some embodiments of the invention, the speaker failure detection apparatus further comprises: and the first connecting end and the second connecting end of the threshold adjusting module are both connected with the microprocessor module, and the third connecting end of the threshold adjusting module is connected with the ground wire and is used for adjusting the built-in vibration threshold of the microprocessor module.
According to some embodiments of the invention, the threshold adjustment module comprises: one end of the incremental button is connected with the microprocessor module, and the other end of the incremental button is connected with a ground wire; and one end of the decreasing button is connected with the microprocessor module, and the other end of the decreasing button is connected with a ground wire.
According to some embodiments of the invention, the speaker failure detection apparatus further comprises: and the reset key is connected between the reset port of the microprocessor module and the external power supply.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a system block diagram of a first embodiment of the present invention;
FIG. 2 is a system block diagram of a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a detection module of an embodiment of the present invention;
FIG. 4 is a schematic diagram of a microprocessor module according to an embodiment of the invention;
FIG. 5 is a schematic diagram of an alarm module of an embodiment of the present invention;
FIG. 6 is a schematic diagram of a sensitivity adjustment module of an embodiment of the present invention;
FIG. 7 is a threshold adjustment module schematic of an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
in the description of the present invention, if there are first, second, third, fourth, etc. described only for the purpose of distinguishing technical features, they are not to be interpreted as indicating or implying relative importance or implying number of indicated technical features or implying precedence of indicated technical features.
In the description of the present invention, unless otherwise explicitly defined, terms such as arrangement, connection and the like should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the detailed contents of the technical solutions.
A speaker malfunction detection apparatus according to a first embodiment of the present invention is described below with reference to fig. 1.
The speaker fault detection device according to the embodiment of the present invention includes: the device comprises a detection module, a microprocessor module, an alarm module and a power supply module.
the detection module is used for detecting the vibration state of the loudspeaker on the mounting carrier of the loudspeaker and outputting a corresponding vibration level; the microprocessor module is connected with the output end of the detection module and is used for detecting the vibration level transmitted by the detection module and outputting a corresponding control signal; the alarm module is connected with the microprocessor module and used for giving an alarm after receiving the control signal; and the power supply module is used for supplying power to the device.
Referring to fig. 1, when the device is used for detecting a speaker fault, a detection module needs to be placed on an installation carrier at a position where a speaker is located, when the speaker works normally, the installation carrier vibrates, and the detection module detects the vibration to achieve the purpose of detecting the speaker fault; the detection module can be real-time will install the vibrations state conversion of carrier and shake the level and transmit microprocessor module, and microprocessor module can be after receiving this vibrations level signal, can carry out the analysis to the voltage size of vibrations level, if the voltage amplitude undersize, then can control alarm module and send out the warning. The detection module can be respectively used for detecting through placing at different positions, and specific fault positioning is carried out on the multimedia equipment with the plurality of loudspeaker devices.
According to the loudspeaker fault detection device provided by the embodiment of the invention, the detection of the quality of the loudspeaker in a noisy environment can be realized through the detection module and the microprocessor module, compared with the traditional mode of directly detecting sound, the loudspeaker fault detection device has stronger anti-interference capability, and can be used for respectively detecting the loudspeakers at a plurality of positions and positioning the loudspeaker fault to a specific fault position due to the particularity of the installation positions of the loudspeaker fault detection device; the alarm device can provide alarm, and testers can know the existence of faults visually and in real time in complex working condition environments.
in some embodiments of the invention, referring to fig. 3, the detection module comprises: the shock sensor RL1, first resistance R1, second resistance R2, first electric capacity C1. The working voltage end of the vibration sensor is connected with an external power supply, and the output end of the vibration sensor is connected with the microprocessor module; a first resistor R1 connected between the ground terminal of the shock sensor RL1 and the ground line; the second resistor R2 is connected between the output end of the shock sensor RL1 and the ground wire; the first capacitor C1 is connected in parallel with the second resistor R2. The vibration sensor RL1 can effectively detect the vibration of the mount carrier. The first resistor R1, the second resistor R2 and the first capacitor C1 are used for assisting the shock sensor RL1 in better shock detection. The shock sensor RL1 directly transmits the shock level to the microprocessor module via the output after detecting the shock. In some embodiments of the present invention, shock sensor RL1 employs an analog shock sensor based on a piezoceramic wafer.
In some embodiments of the invention, referring to fig. 5, the alarm module comprises: a third resistor R3 and a first light emitting diode D1. A third resistor R3, one end of which is connected with the microprocessor module; the cathode of the first light emitting diode D1 is connected to the other end of the third resistor R3, and the anode thereof is connected to an external power supply. The first led D1 will light up after receiving the low level control signal outputted from the microprocessor module. When the microprocessor module determines that the speaker is out of order, the microprocessor module controls the first light emitting diode D1 to start strobing. The sensitivity to sound becomes very low when a person is in a noisy environment, it is difficult for the detecting person to distinguish the fault information in time if only a buzzer signal is simply sent out, and the stroboscopic light source sent out by the first light-emitting diode D1 can well enable the detecting person to effectively issue the alarm signal in the noisy environment. In practical engineering, the light sources can be replaced by lamps in the form of light sources other than the light emitting diodes, such as LED lamps, and the number of the light sources can be increased appropriately according to practical situations.
Referring to fig. 2, a speaker failure detection apparatus according to a second embodiment of the present invention is provided with a sensitivity adjustment module added to the speaker failure detection apparatus according to the first embodiment, wherein the sensitivity adjustment module has a first input end connected to an output end of the detection module, a second input end connected to an external power supply, a working voltage end connected to the external power supply, and an output end connected to the microprocessor module, and is configured to adjust a sensitivity of a vibration level. Adopt sensitivity adjustment module, can carry out sensitivity adjustment to the vibrations level of detection module output, the improvement device that can be further distinguishes the scope to sound, when distinguishing little vibrations, through heightening sensitivity, can reach anticipated detection effect. Meanwhile, the sensitivity adjusting module is adopted to improve the detection stability of the device, and the problem that the device cannot detect due to too low or too high sensitivity when too large or too small volume is detected is avoided.
In some embodiments of the present invention, referring to fig. 6, the sensitivity adjustment module comprises: an operational amplifier unit U1, a slide rheostat R6 and a fourth resistor R5. The output end of the operational amplifier unit U1 is connected with the microprocessor module, the working voltage end is connected with an external power supply and is provided with two input ends, and the first input end is connected with the output end of the detection module; the first connecting end of the slide rheostat R6 is connected with an external power supply, the second connecting end of the slide rheostat R6 is connected with a ground wire, and the slide end of the slide rheostat R6 is connected with the second input end of the operational amplifier unit U1; and the fourth resistor R5 is connected between the output end of the operational amplifier unit U1 and the working voltage end. The operational amplifier unit U1, the sliding rheostat R6 and the fourth resistor R5 form an operational amplifier circuit, and the voltage of the vibration level output by the detection module can be amplified or reduced through the sliding rheostat, when the device detects a small sound volume, the voltage of the vibration level can be amplified through the operational amplifier circuit, and when a large sound volume is detected, the voltage of the vibration level can be reduced through the operational amplifier circuit. In practical engineering, specific magnification and reduction times need to be uniformly set according to the detection requirements of the same batch of multimedia equipment speakers. In some embodiments of the present invention, the op-amp unit U1 uses a LM393 chip.
In some embodiments of the present invention, referring to fig. 2, the speaker malfunction detection apparatus further includes: and the first connecting end and the second connecting end of the threshold adjusting module are both connected with the microprocessor module, and the third connecting end of the threshold adjusting module is connected with the ground wire and used for adjusting the built-in vibration threshold of the microprocessor module. And the threshold adjusting module is mainly used for adjusting a preset voltage threshold which is used as a standard for judging whether the vibration level is qualified or not. In practical engineering, when the loudspeaker volume is detected to be qualified, the volume can be adjusted to 100%, and when the vibration level signal is detected to be higher than a voltage threshold value, the loudspeaker is judged to be normal. The threshold adjusting module can adjust the voltage threshold to judge whether the volume is adjusted to 70%, 50% or 30% normally.
in some embodiments of the invention, referring to fig. 7, the threshold adjustment module comprises: increment key K1, decrement key K2. An incremental button K1, one end of which is connected with the microprocessor module and the other end is connected with the ground wire; and one end of the decrement key K2 is connected with the microprocessor module, and the other end of the decrement key K2 is connected with the ground wire. After the increment key K1 or the decrement key K2 is pressed each time, the microprocessor module increases or decreases the voltage threshold once, and the increase or decrease is set according to the actual use requirement.
In some embodiments of the present invention, the adjustment of the voltage threshold may be performed by a mode of the combined action of the microprocessor module and the threshold adjustment module, so that the accuracy of volume discrimination may be improved to the greatest extent, and a good discrimination effect may be achieved in some multimedia devices having a high requirement for volume quality.
In some embodiments of the present invention, referring to fig. 4, the speaker malfunction detection apparatus further includes: and the reset key KR is connected between the reset port of the microprocessor module and an external power supply. When the device breaks down, press the button KR that resets and can let the device soft start again, contact failure, soft start also can effectively avoid adopting the mode of direct power down to cause the injury to the device.
In some embodiments of the present invention, the microprocessor module is a minimum system of a single chip, specifically, an ATC89C12 single chip.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the embodiments, and those skilled in the art will understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A speaker malfunction detection apparatus, comprising:
the detection module is used for detecting the vibration state of the loudspeaker on the mounting carrier of the loudspeaker and outputting a corresponding vibration level;
The microprocessor module is connected with the output end of the detection module and is used for detecting the vibration level transmitted by the detection module and outputting a corresponding control signal;
The alarm module is connected with the microprocessor module and used for giving an alarm after receiving the control signal;
And the power supply module is used for supplying power to the device.
2. The speaker malfunction detection apparatus according to claim 1, wherein the detection module comprises:
The working voltage end of the vibration sensor is connected with the external power supply, and the output end of the vibration sensor is connected with the microprocessor module;
The first resistor is connected between the grounding end of the vibration sensor and the ground wire;
The second resistor is connected between the output end of the vibration sensor and the ground wire;
And the first capacitor is connected with the second resistor in parallel.
3. the speaker malfunction detection apparatus according to claim 1, wherein the alarm module comprises:
One end of the third resistor is connected with the microprocessor module;
And the cathode of the first light-emitting diode is connected with the other end of the third resistor, and the anode of the first light-emitting diode is connected with the external power supply.
4. The speaker malfunction detection apparatus according to claim 1 or 2, characterized by further comprising: and the sensitivity adjusting module is provided with a first input end connected with the output end of the detection module, a second input end connected with the external power supply, a working voltage end connected with the external power supply and an output end connected with the microprocessor module, and is used for adjusting the sensitivity of the vibration level.
5. The speaker malfunction detection apparatus according to claim 4, wherein the sensitivity adjustment module includes:
The output end of the operational amplifier unit is connected with the microprocessor module, the working voltage end of the operational amplifier unit is connected with the external power supply and is provided with two input ends, and the first input end of the operational amplifier unit is connected with the output end of the detection module;
The first connecting end of the sliding rheostat is connected with the external power supply, the second connecting end of the sliding rheostat is connected with the ground wire, and the sliding end of the sliding rheostat is connected with the second input end of the operational amplifier unit;
and the fourth resistor is connected between the output end of the operational amplifier unit and the working voltage end.
6. The speaker malfunction detection apparatus according to claim 1, further comprising: and the first connecting end and the second connecting end of the threshold adjusting module are both connected with the microprocessor module, and the third connecting end of the threshold adjusting module is connected with the ground wire and is used for adjusting the built-in vibration threshold of the microprocessor module.
7. the speaker malfunction detection apparatus of claim 6, wherein the threshold adjustment module comprises:
One end of the incremental button is connected with the microprocessor module, and the other end of the incremental button is connected with a ground wire;
And one end of the decreasing button is connected with the microprocessor module, and the other end of the decreasing button is connected with a ground wire.
8. The speaker malfunction detection apparatus according to claim 1, further comprising: and the reset key is connected between the reset port of the microprocessor module and the external power supply.
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| CN201910902978.XA CN110557712A (en) | 2019-09-24 | 2019-09-24 | Loudspeaker fault detection device |
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| CN201910902978.XA CN110557712A (en) | 2019-09-24 | 2019-09-24 | Loudspeaker fault detection device |
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Cited By (1)
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| CN110996243A (en) * | 2019-12-16 | 2020-04-10 | 广州市迪士普音响科技有限公司 | Loudspeaker on-line detection system |
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