CN2620450Y - Temp detection type pass load-speaker protector - Google Patents
Temp detection type pass load-speaker protector Download PDFInfo
- Publication number
- CN2620450Y CN2620450Y CN 02287825 CN02287825U CN2620450Y CN 2620450 Y CN2620450 Y CN 2620450Y CN 02287825 CN02287825 CN 02287825 CN 02287825 U CN02287825 U CN 02287825U CN 2620450 Y CN2620450 Y CN 2620450Y
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- CN
- China
- Prior art keywords
- temperature
- woofer
- voice coil
- loudspeaker enclosure
- temperature controller
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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.)
- Expired - Fee Related
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Abstract
Disclosed is a temperature measuring woofer protection device, a device belonging to the technique field of the loudspeaker enclosure woofer protection. The employment of the device solves the problem that the loudspeaker enclosure will not be burnt when the signal amplitude the woofer inputs is too strong or is of distortion, and achieves to real-time measuring, display and detection of the working temperature of the voice coil of the loudspeaker enclosure woofer. The device adopts the technique proposal to solve these problems as following: loudspeaker enclosure woofer (1) is provided with a temperature-sensitive device on the voice coil to detect the temperature changing signal of the voice coil; a temperature-detection control circuit, composed of a special temperature detection conductor (2) used for temperature control device, a temperature control device (3), a temperature control device signal control output conductor (4) and a relay (5), is provided to control the connection and disconnection between the loudspeaker enclosure line (6) of the audio power amplifier and the signal output conductor (7) of the woofer. The utility model is mainly used to protect the loudspeaker enclosure woofer and reduce the possibility that the woofer will be burnt; thereby avoiding varieties of losses and improving the use efficiency of the loudspeaker enclosure.
Description
Affiliated technical field
The utility model relates to the device of a kind of audio amplifier woofer protection, especially the woofer protective device that can monitor in real time and protect woofer.
Background technology
At present; the device that is used for the woofer protection; though be that protective circuit is that the protective device of the built-in mode of audio-frequency power amplifier has defencive functions such as overcurrent, overload, time-delay, peak value, direct current output, can not carry out real-time guard more accurately to woofer.Woofer is when work, its input signal can produce the strong excessively phenomenon of distortion or amplitude unavoidably under artificial and unartificial situation, because the audio signal of being imported during woofer work is the forceful electric power signal that wave-shape amplitude and frequency constantly change, the possibility that this will cause woofer to burn.The final immediate cause that woofer burns is that the working temperature of its voice coil loudspeaker voice coil rises sharply and surpasses the limiting temperature value that its operate as normal allowed, and present protective device can not be clearly, effectively woofer is detected protection in real time at this phenomenon.
Summary of the invention
Existing woofer protective device can not be clearly in order to overcome; effectively rise sharply and surpass the possibility that voice coil loudspeaker voice coil that limiting temperature value that its operate as normal allowed caused burns at the working temperature of woofer voice coil loudspeaker voice coil; can not carry out more directly perceived to woofer in order to solve existing bass sound loudspeaker protector; more reliable and real-time detection protection; the utility model provides a kind of woofer protective device of temperature detection formula; this device can detect in real time; the working temperature that shows the woofer voice coil loudspeaker voice coil; and can be when the working temperature of voice coil loudspeaker voice coil surpasses the limiting temperature that its operate as normal allowed; automatically woofer is implemented reliable protection, and can reduce to limiting temperature that its operate as normal allows in the working temperature of voice coil loudspeaker voice coil and recover woofer work when following automatically.
The technical scheme that its technical problem that solves the utility model adopts
The Circuits System of this device is made of temperature-sensitive element temperature-sensitive head, temperature controller, relay, woofer, temperature controller temperature detection special wire, it is characterized in that the temperature-sensitive element temperature-sensitive head, be connected with temperature controller by temperature controller temperature detection special wire, the control signal output ends of temperature controller is connected with the control coil of relay, and the operating contact of relay is connected with the signal input lead of woofer.Characteristics below in conjunction with this circuit elaborate to the technical scheme that it adopts, on the voice coil loudspeaker voice coil of woofer, has a temperature-sensitive element temperature-sensitive head, it is connected by the temperature sensing input of temperature controller temperature sensing special wire and temperature controller, the power input of temperature controller is connected with civil power, the control output end of temperature controller is connected with the control coil of relay, the operating contact of relay is being controlled the break-make of the signal input line of woofer, last operating contact is connected with audio-frequency power amplifier by the audio amplifier signal conductor, and following operating contact is connected with the signal input line of woofer.When the woofer operate as normal, the temperature-sensitive element temperature-sensitive head detects the working temperature of voice coil loudspeaker voice coil, to the signal of telecommunication of converting and passes to temperature controller, and by the temperature controller display part it is intuitively shown; When woofer when work voice coil loudspeaker voice coil working temperature exceed the limiting value of its operate as normal, the temperature-sensitive element temperature-sensitive head detects the current working temperature of voice coil loudspeaker voice coil, to the signal of telecommunication of converting and pass to temperature controller, and export the signal of telecommunication by temperature controller control signal output and give relay control coil, cause the actuating of relay, cut off the work signal of telecommunication of woofer, woofer thereby quit work, when the actual temperature of voice coil loudspeaker voice coil is returned to the temperature conditions of operate as normal, the temperature-sensitive element temperature-sensitive head detects its voice coil temperature and is transformed into electrical signal transfer gives temperature controller, and the signal of telecommunication of resuming work by temperature controller control signal output ends output, the actuating of relay recovers the woofer operate as normal.Reach the purpose of protection woofer as mentioned above; the setting of the limiting temperature of its medium and low spectrum loudspeaker is set by the set parts of temperature controller; the working temperature limit value equals the high-temperature resistant (general 105 ℃) of voice coil loudspeaker voice coil lead and deducts conduction temperature difference (10 ℃), deducts actual safety value (20 ℃) again and equals 75 ℃.In actual embodiment of the present utility model, can select the temperature controller of different displays temperature modes according to actual conditions.Digital displaying temperature directly perceived, accurately be fit to environment with dark light, but cost is more higher.The pointer displays temperature or do not have displays temperature to have only the then more both economical of design temperature.Also can replace temperature controller work with temperature-control circuit in addition, advantage is economical, easy for installation, and incidental function is adapted flexibly also.The temperature-sensitive element temperature-sensitive head is looked the difference of the temperature controller of employing or temperature-control circuit and is matched, and can play the temperature-sensitive element of temperature detection effect for thermocouple, thermistor or other.
The beneficial effects of the utility model are
When the woofer operate as normal, can show the working temperature of its voice coil loudspeaker voice coil, be convenient to grasp the situation of its work; When woofer produces the possibility of burning, it is carried out reliable protection, and still can show the Current Temperatures of voice coil loudspeaker voice coil intuitively, in real time.Thereby saved the maintenance cost cost in actual applications greatly, and reduced frequency of maintenance, improved the result of use of woofer, prolonged the useful life of woofer, avoided burning the various losses that bring because of woofer.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Among the figure (1), woofer, (2), temperature controller temperature detection special wire, (3), temperature controller, (4), temperature controller control signal output lead, (5), relay, (6), audio-frequency power amplifier output lead, (7), woofer signal input lead, (8), temperature controller transducer input positive terminal, (9), temperature controller transducer input negative phase end, (10), the empty foot of temperature controller, (11), temperature control instrument warning output 1, (12), control instrument warning output 2, (13), temperature controller power supply phase line end, (14), temperature controller power supply neutral terminal, (15), the built-in relay normally open contact end of temperature controller, (16), the built-in relay common of temperature controller end, (17), the built-in relay normally-closed contact of temperature controller end, (18), thermosensitive temperature-sensing head, (19), thermosensitive temperature-sensing head positive output end, (20), thermosensitive temperature-sensing head negative output, (21), woofer positive terminals, (22), woofer negative terminals, (23), the relay control coil terminals, (24), audio-frequency power amplifier positive output end, (25), audio-frequency power amplifier negative output, (26), temperature controller power input plug.
Embodiment
In Fig. 1; the working temperature of woofer (1) voice coil loudspeaker voice coil by the thermosensitive temperature-sensing head detect through temperature controller temperature detection special wire (2) pass to temperature controller (3) handle whether protect the action or the action of resuming work; its action output voltage is passed to relay (5) control coil through temperature controller control signal output lead (4); relay (5) is made adhesive or release movement accordingly, thus the break-make between control audio power amplifier output lead (6) and the woofer signal input lead (7).
Fig. 2 is the circuit theory diagrams of embodiment of the present utility model.
In the circuit diagram of embodiment shown in Fig. 2, thermosensitive temperature-sensing head (18) is attached on woofer (1) voice coil loudspeaker voice coil, and the working temperature output that it detects voice coil loudspeaker voice coil is given temperature controller (3) and handled.Thermosensitive temperature-sensing head positive output end (19) is connected by temperature controller temperature detection special wire (2) with temperature controller transducer input positive terminal (8), thermosensitive temperature-sensing head negative output (20) is connected by temperature controller temperature detection special wire (2) with temperature controller transducer input negative phase end (9), temperature controller power input plug (26) and temperature controller power supply line end (13) mutually are connected with temperature controller power supply neutral terminal (14), two relay control coil terminals (23) of relay (5) respectively with the temperature controller power supply mutually line end (13) be connected with the built-in relay common of temperature controller end (16), temperature controller power supply neutral terminal (14) is connected with the built-in relay normally open contact end of temperature controller (15), and woofer positive terminals (21) are connected with audio-frequency power amplifier negative output (25) with audio-frequency power amplifier positive output end (24) through relay (5) respectively with woofer negative terminals (22).
Fig. 3 is a specification digest accompanying drawing of the present utility model.
Claims (4)
1. the woofer protective device of a temperature detection formula; adopt the Circuits System of this device to constitute by temperature-sensitive element temperature-sensitive head, temperature controller, relay, woofer, temperature controller temperature detection special wire; it is characterized in that the temperature-sensitive element temperature-sensitive head; be connected with temperature controller by temperature controller temperature detection special wire; the control signal output ends of temperature controller is connected with the control coil of relay, and the operating contact of relay is connected with the signal input lead of woofer.
2. the woofer protective device of a kind of temperature detection formula according to claim 1; it is characterized in that in the woofer protective circuit system of temperature detection formula that the temperature controller of employing is that pointer shows or numeral is that show or other demonstration or do not have demonstration.
3. the woofer protective device of a kind of temperature detection formula according to claim 1 is characterized in that in the woofer protective circuit system of temperature detection formula, temperature controller employing temperature-control circuit.
4. the woofer protective device of a kind of temperature detection formula according to claim 1 is characterized in that in the woofer protective circuit system of temperature detection formula, and the temperature-sensitive element temperature-sensitive head is thermoelectric occasionally thermistor or other temperature-sensitive element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02287825 CN2620450Y (en) | 2002-11-28 | 2002-11-28 | Temp detection type pass load-speaker protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02287825 CN2620450Y (en) | 2002-11-28 | 2002-11-28 | Temp detection type pass load-speaker protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2620450Y true CN2620450Y (en) | 2004-06-09 |
Family
ID=34238602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02287825 Expired - Fee Related CN2620450Y (en) | 2002-11-28 | 2002-11-28 | Temp detection type pass load-speaker protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2620450Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102595280A (en) * | 2012-01-18 | 2012-07-18 | 精拓丽音科技（北京）有限公司 | Speaker integrated system with sensor feedback and drive circuit |
| CN106028236A (en) * | 2016-06-22 | 2016-10-12 | 青岛海信移动通信技术股份有限公司 | Loudspeaker and terminal |
| CN106658331A (en) * | 2016-12-30 | 2017-05-10 | 维沃移动通信有限公司 | Loudspeaker detection method and mobile terminal |
| CN106840431A (en) * | 2015-07-24 | 2017-06-13 | 恩智浦有限公司 | Temperature sensing |
-
2002
- 2002-11-28 CN CN 02287825 patent/CN2620450Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102595280A (en) * | 2012-01-18 | 2012-07-18 | 精拓丽音科技（北京）有限公司 | Speaker integrated system with sensor feedback and drive circuit |
| CN102595280B (en) * | 2012-01-18 | 2014-12-10 | 精拓丽音科技（北京）有限公司 | Speaker integrated system with sensor feedback and drive circuit |
| CN106840431A (en) * | 2015-07-24 | 2017-06-13 | 恩智浦有限公司 | Temperature sensing |
| CN106840431B (en) * | 2015-07-24 | 2019-10-11 | 恩智浦有限公司 | Temperature sensing |
| CN106028236A (en) * | 2016-06-22 | 2016-10-12 | 青岛海信移动通信技术股份有限公司 | Loudspeaker and terminal |
| CN106658331A (en) * | 2016-12-30 | 2017-05-10 | 维沃移动通信有限公司 | Loudspeaker detection method and mobile terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |