CN218514511U - Strong sound system, double-coil high-sound-pressure-level strong sound transducer and detection device thereof - Google Patents
Strong sound system, double-coil high-sound-pressure-level strong sound transducer and detection device thereof Download PDFInfo
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- CN218514511U CN218514511U CN202222230215.5U CN202222230215U CN218514511U CN 218514511 U CN218514511 U CN 218514511U CN 202222230215 U CN202222230215 U CN 202222230215U CN 218514511 U CN218514511 U CN 218514511U
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Abstract
The utility model discloses a strong acoustic system, twin coil high sound pressure level strong acoustic transducer and detection device thereof, the utility model discloses a set up a detection resistance on the transducer to control the transducer through control switch and be connected with this detection resistance, detect with the voltage based on this detection resistance both ends through detection device, thereby judge whether the circuit of transducer breaks down, and when control switch control transducer is connected with the power amplifier, then the transducer normally works, also promptly the utility model discloses a set up a detection resistance and a control switch on the transducer, control the transducer through control switch and be connected with detection resistance or be connected with the power amplifier, realize that the transducer switches over wantonly between detection mode and normal operating mode, finally realize automatic high-efficient the detection to the transducer, promote user experience greatly.
Description
Technical Field
The utility model relates to a transducer technical field especially relates to a strong acoustic system, twin coil high sound pressure level strong acoustic transducer and detection device thereof.
Background
The double-coil high-sound-pressure-level transducer is used as a core component of the loud-sound equipment, and the fault of the transducer can cause the abnormal use of the loud-sound equipment. The resistance of a normal high sound pressure level transducer is 2.6 ohms, and when a dual coil transducer breaks 1 coil, the maximum sound pressure level of the transducer will be reduced by 6dB, and the resistance of the transducer becomes 5.2 ohms. When the double-coil transducer is completely damaged, the resistance of the transducer becomes infinite, and the transducer cannot play audio signals. Therefore, to ensure proper playback of the audio signal, it is desirable to be able to detect a fault condition of the transducer.
The existing method for detecting the line of the transducer mainly comprises the steps of manually acquiring the impedance of the transducer, and comparing the impedance with a prestored impedance calibration value of the normally installed transducer, so as to judge whether the line of the transducer fails. However, the efficiency of manual detection is certainly low, so how to realize efficient detection of the transducer becomes a problem to be solved urgently.
Disclosure of Invention
The utility model provides a strong acoustic system, twin coil high sound pressure level strong acoustic transducer and detection device thereof to can not realize carrying out the problem that high efficiency detected to the transducer automatically among the solution prior art.
In a first aspect, the present invention provides a dual-coil high-sound-pressure-level electroacoustic transducer, which comprises a control switch and a detection resistor;
the detection resistor is connected with the transducer in series through the control switch, and the on-off between the detection resistor and the transducer is controlled through the control switch;
and in the detection mode of detecting the energy converter, an input power supply is connected with the energy converter through the detection resistor, so that the double-coil high-sound-pressure-level electroacoustic transducer fault detection device can judge whether the energy converter works normally, damages one coil or loses two coils based on the voltage at two ends of the detection resistor.
Optionally, the voltage of the input power supply is 3.3V.
In a second aspect, the present invention provides a device for fault detection of a transducer, the device comprising: a voltage acquisition circuit and a processor;
the voltage acquisition circuit is connected with the detection resistor and is used for acquiring the voltage at two ends of the detection resistor in a detection mode of detecting the transducer;
and the processor is used for judging whether the energy converter works normally, damages one coil or loses two coils based on the voltage acquired by the voltage acquisition circuit.
Optionally, the processor is further configured to compare the voltage acquired by the voltage acquisition circuit with a preset voltage threshold range to determine that the transducer is working normally, one coil is damaged, or two coils are lost.
Optionally, the processor is further configured to determine that the transducer is working normally when the voltage data is less than 1.8V, determine that one coil is damaged when the voltage data is greater than 1.8V and less than 2.5V, and determine that two coils are damaged when the voltage data is greater than 2.5V and less than 3.3V.
Optionally, the processor is further configured to report a determination result of the transducer.
Optionally, the processor is further configured to report the determination result of the transducer through an RS 232.
Optionally, the detection resistance is a 3 Ω resistance.
In a third aspect, the present invention provides a loud sound system, wherein the loud sound device comprises a power amplifier device, any one of the above devices and any one of the above dual coil transducers.
The utility model discloses beneficial effect as follows:
the utility model discloses a set up a detection resistance on the transducer to control the transducer through control switch and be connected with this detection resistance, detect based on the voltage at this detection resistance both ends with voltage through detection device, thereby judge whether the circuit of transducer is trouble, and when control switch control transducer is connected with the power amplifier, then the transducer normally works, also promptly the utility model discloses a set up a detection resistance and a control switch on the transducer, control the transducer through control switch and be connected with detection resistance or with the power amplifier, realize that the transducer switches over wantonly between detection mode and normal operating mode, finally realize automatic high-efficient the detection to the automation of transducer, promote user experience greatly.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a transducer provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a detection device of a transducer provided by an embodiment of the present invention;
fig. 3 is a schematic flow chart of a transducer detection method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a processor circuit provided in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a reporting circuit of a processor according to an embodiment of the present invention;
Detailed Description
The embodiment of the utility model provides a to current unable automatic and carry out the problem that detects to the transducer high-efficiently, through set up a detection resistance on the transducer, and control the transducer through control switch and be connected with this detection resistance, detect with the voltage based on this detection resistance both ends through detection device, thereby judge whether the circuit of transducer breaks down, and when control switch control transducer is connected with the power amplifier, then the transducer normally works, also promptly the utility model discloses a set up a detection resistance and a control switch on the transducer, control the transducer through control switch and be connected with detection resistance or be connected with the power amplifier, realize that the transducer switches wantonly between detection mode and normal operating mode, finally realize automatic high-efficient detection to the transducer, promote user experience greatly. The present invention will be described in further detail with reference to the drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of, and do not limit, the invention.
A first embodiment of the present invention provides a dual-coil high-sound-pressure-level megasonic transducer, see fig. 1, which includes: a control switch and a detection resistor; the detection resistor is connected with the transducer in series through the control switch, and the on-off between the detection resistor and the transducer is controlled through the control switch;
that is, in the working mode of the transducer, the connection between the detection resistor and the transducer is cut off, so that the power amplifier is directly communicated with the transducer, and in the detection mode of detecting the transducer, the input power supply is connected with the transducer through the detection resistor, so that the fault detection device for the dual-coil high-sound-pressure-level electroacoustic transducer can determine that the transducer is in normal operation, one coil is damaged, or two coils are lost based on the voltage at two ends of the detection resistor.
That is to say, the embodiment of the present invention is to provide a detection resistor on the transducer, in the detection mode, the transducer is controlled by the control switch to be connected with the detection resistor, so as to perform detection based on the voltage at the two ends of the detection resistor through the detection device, thereby determining whether the line of the transducer is faulty, and when the control switch controls the transducer to be connected with the power amplifier, the transducer works normally.
Briefly, the embodiment of the utility model provides a set up a detection resistance and a control switch on the transducer, control the transducer through control switch and be connected with detection resistance or be connected with the power amplifier, realize that the transducer switches wantonly between detection mode and normal operating mode, and then realizes automatic high-efficient detection to the automation of transducer, finally promote user experience greatly.
Referring to fig. 1, the embodiment of the present invention only needs to provide a detection resistor on the transducer, the detection resistor may be a 3 Ω resistor, and the voltage of the input power may be 3.3V. It should be noted that the resistance value of the detection resistor and the voltage of the input power supply are only examples, and those skilled in the art can arbitrarily set the resistance value and the voltage according to actual needs in specific implementation, which is not specifically limited by the present invention.
Accordingly, the embodiment of the present invention further provides a detection apparatus for detecting a fault of the transducer described in any one of the above, referring to fig. 2, the detection apparatus includes: a voltage acquisition circuit and a processor;
the voltage acquisition circuit is connected with the detection resistor and is used for acquiring the voltage at two ends of the detection resistor under the triggering of the processor and in a detection mode of detecting the transducer;
the processor is used for triggering the control switch to be switched to a detection mode, triggering the voltage acquisition circuit to acquire voltage, and judging whether the energy converter works normally, damages one coil or loses two coils or not based on the voltage acquired by the voltage acquisition circuit
That is, the embodiment of the utility model provides a be connected detection device with detection resistance to the behavior of transducer is confirmed based on the voltage of the detection resistance who gathers.
Particularly, the embodiment of the utility model provides a will compare based on the voltage that voltage acquisition circuit gathered and predetermine the voltage threshold value scope through the treater, in order to judge the transducer is normal work, damages a coil or two coils of loss.
In particular, the processor in the embodiment of the present invention determines that the transducer normally operates when the voltage data is smaller than 1.8V, and determines that the transducer damages one coil when the voltage data is larger than 1.8V and smaller than 2.5V, and determines that the transducer damages two coils when the voltage data is larger than 2.5V and smaller than 3.3V.
That is to say, the embodiment of the utility model provides a can detect the voltage at resistance both ends through voltage acquisition circuit automatic acquisition to automatically, carry out the operating condition's of transducer judgement through the treater. Through the utility model discloses can know, the embodiment of the utility model provides a can realize carrying out automated inspection to the operating condition of transducer, avoid the trouble of manual one-by-one detection comparison judgement to user experience has been promoted greatly.
When the concrete implementation, in order to further be convenient for the user to look over the result, the embodiment of the utility model provides a can also trigger will the treater confirm will report through RS232 the judgement result of transducer, specifically can report to the various mobile terminal of user, perhaps report to the server of user and so on to the user looks over the testing result.
The method according to an embodiment of the invention will be explained and illustrated in detail below by means of a specific example:
the existing transducer line detection method mainly calibrates a normally installed transducer in an impedance detection mode, and saves an impedance value as a calibration value. And then, under the condition that the audio playing equipment does not send out an audio signal, manually detecting the line of the transducer, acquiring an impedance value, and comparing the impedance value with the calibration value to judge whether the line of the transducer fails. But this kind of manual detection's mode degree of automation is low, can't realize remote detection and on-line measuring, to this, the embodiment of the utility model provides a transducer, also be the fault detection device of speaker. Particularly, the embodiment of the utility model provides an utilize speaker impedance characteristic to establish impedance detection circuitry, combine filter circuit, trouble judgement controlling means, can conveniently realize the online fault detection function of speaker. This fault detection device both independently with the audio drive, do not influence speaker self-function again and realize, the connector detection mode is compared, does not rely on specific connector, can real-time detection audio line again connect, open circuit, the voice coil loudspeaker voice coil opens circuit, the short circuit the unusual, have with low costs, realize simply, detect comprehensive advantage.
As can be seen from fig. 3, the detection device in the embodiment of the present invention mainly works in 5 processes of mode switching, circuit voltage division, voltage acquisition, voltage processing, and state reporting. Particularly, after the high-sound-pressure transducer starts to work, the processor receives a control signal, enters a transducer detection mode, applies 3V voltage to the transducer and the series resistor of the transducer, acquires the voltage at two ends of the transducer by using the analog-digital converter, analyzes the state of the transducer according to the voltage value, and reports the state of the transducer to a master control system through RS232, so that the transducer detection function is realized.
The embodiment of the utility model provides an in detection device can select STM32F103RCT6 as master control set, and the device passes through field effect transistor control relay and selects trouble detection mode operating condition. When the fault detection system is not operating, the selection switch is connected to the B position, and the dual coil transducer is in an audio playing state. After the system is switched to the fault detection mode, the selection switch is connected to the A position, and the double-coil transducer and the 3 omega resistor are in series connection. The functional block diagram of the mode switching is shown in fig. 1.
After switching to the fault detection mode, the selection switch is connected to the a position, and the dual coil transducer is in series with a 3 Ω resistor. When the dual coil transducer is in a normal state, the resistance of the transducer is 2.6 ohms. Here, the voltage value at a is calculated by the formula:
when the double-coil transducer damages one coil, the resistance value of the transducer is 5.2 ohms, and the calculation formula of the voltage value at the position A is as follows:
when the double-coil transducer damages two coils, the resistance of the transducer is infinite, and the voltage value at A is 3.3V.
As shown in fig. 4, the circuit diagram of the processor and the adc according to the embodiment of the present invention, the voltage acquisition adopts the adc and the 12-bit successive approximation type of the single chip microcomputer, and the voltage value at both ends of the transducer is acquired. The result of the ADC voltage may be stored left-aligned in a 16-bit data register.
The embodiment of the utility model provides an in voltage processing specifically include: transducer failure check thresholds are prestored in the failure detection processor, and transducer results are obtained by comparison with the threshold results, see table 1.
TABLE 1 Voltage threshold Range Table
| Serial number | Voltage threshold | Determination result | |
| 1 | 0～1.8 | Transducer normality | |
| 2 | 1.8～2.5V | The transducer damaging one coil | |
| 3 | 2.5～3.3V | The transducer damaging both coils |
When the voltage acquired by the analog-digital converter is 0-1.8V, the transducer is judged to be in a normal working state; when the acquired voltage is 1.8-2.5V, the transducer judges that one coil is damaged; when the collected voltage is 2.5-3.3V, the transducer damages two coils.
During concrete implementation, after judging the completion, then the treater gets into and reports transducer state stage, particularly, the embodiment of the utility model provides an in high sound pressure level transducer fault detection device carry on SP3232 chip, adopt TXD, RXD, the three-way serial ports mechanism of GND can report transducer information to major control system. The serial port communication protocol adopts 115200bps, and a serial port hardware circuit is shown in figure 5.
In conclusion, the embodiment of the present invention adopts the mode of switching between the working mode and the detection mode on line, and the voltage value of the detection resistor of the transducer is collected through the analog-digital converter, and then the processor compares the voltage value with the pre-stored predetermined threshold value, thereby realizing the state of the on-line detection transducer, and determining the normal, single-coil and double-coil damage states of the transducer. And further, a guidance basis is provided for the use and maintenance personnel, the workload of the personnel is reduced, and the operation efficiency is improved. That is to say, the embodiment of the utility model provides a can accomplish the testing process of high sound pressure level transducer on line, reduce personnel's work load, and the utility model discloses can detect the damage degree of double-coil transducer, provide change means and foundation fast for the maintainer.
Additionally, the embodiment of the utility model provides a still provide a loud sound system, the loud sound equipment include power amplifier equipment any one kind in the embodiment of the utility model provides an in the aforesaid device and any kind the double coil transducer. The corresponding content can be understood by referring to the above embodiments of the present invention, and detailed description is not repeated herein.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, and that the scope of the present invention is not limited to the embodiments disclosed.
Claims (9)
1. A kind of double-coil high sound pressure level strong acoustic transducer, characterized by, control switch and detection resistance;
the detection resistor is connected with the transducer in series through the control switch, and the on-off between the detection resistor and the transducer is controlled through the control switch;
and in the detection mode of detecting the transducer, an input power supply is connected with the transducer through the detection resistor, so that the fault detection device of the double-coil high-sound-pressure-level electroacoustic transducer can judge that the transducer works normally, one coil is damaged or two coils are lost based on the voltage at two ends of the detection resistor.
2. The transducer of claim 1,
the voltage of the input power supply is 3.3V.
3. The transducer according to claim 1 or 2,
the detection resistor is a 3 omega resistor.
4. A detection device for fault detection of the transducer of claim 1, 2 or 3, comprising: a voltage acquisition circuit and a processor;
the voltage acquisition circuit is connected with the detection resistor and is used for acquiring the voltage at two ends of the detection resistor under the triggering of the processor and in a detection mode of detecting the transducer;
the processor is used for triggering the control switch to be switched to a detection mode, triggering the voltage acquisition circuit to acquire voltage, and judging whether the transducer works normally, and damages one coil or loses two coils based on the voltage acquired by the voltage acquisition circuit.
5. The apparatus of claim 4,
the processor is further used for comparing the voltage acquired by the voltage acquisition circuit with a preset voltage threshold range to judge whether the transducer works normally, and damages one coil or loses two coils.
6. The apparatus of claim 5,
the processor is further used for judging that the energy converter works normally when the voltage data is smaller than 1.8V, judging that the energy converter damages one coil when the voltage data is larger than 1.8V and smaller than 2.5V, and judging that the energy converter damages two coils when the voltage data is larger than 2.5V and smaller than 3.3V.
7. The apparatus according to any one of claims 4 to 6,
the processor is further configured to report a determination result of the transducer.
8. The apparatus of claim 7,
the processor is further configured to report the determination result of the transducer through RS 232.
9. A loud sound system, wherein the loud sound device comprises a power amplifier device, an apparatus according to any one of claims 4 to 8 and a transducer according to claim 1, 2 or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222230215.5U CN218514511U (en) | 2022-08-24 | 2022-08-24 | Strong sound system, double-coil high-sound-pressure-level strong sound transducer and detection device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222230215.5U CN218514511U (en) | 2022-08-24 | 2022-08-24 | Strong sound system, double-coil high-sound-pressure-level strong sound transducer and detection device thereof |
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| Publication Number | Publication Date |
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| CN218514511U true CN218514511U (en) | 2023-02-21 |
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| CN202222230215.5U Active CN218514511U (en) | 2022-08-24 | 2022-08-24 | Strong sound system, double-coil high-sound-pressure-level strong sound transducer and detection device thereof |
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- 2022-08-24 CN CN202222230215.5U patent/CN218514511U/en active Active
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