CN202002966U - Overload alarm circuit structure and socket for integrating the same - Google Patents
Overload alarm circuit structure and socket for integrating the same Download PDFInfo
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- CN202002966U CN202002966U CN2010206800845U CN201020680084U CN202002966U CN 202002966 U CN202002966 U CN 202002966U CN 2010206800845 U CN2010206800845 U CN 2010206800845U CN 201020680084 U CN201020680084 U CN 201020680084U CN 202002966 U CN202002966 U CN 202002966U
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Abstract
The present utility model discloses an overload alarm circuit structure and a socket for integrating the same. The overload circuit structure comprises a current voltage converting circuit for collecting current signals of the L wire end and converting the current signals into voltage signals; a rectification filter circuit for subjecting the voltage signals to rectification and filtering processing and converting into DC voltage, and subjecting voltage connected with the L wire end and the N wire end to rectification and filtering processing and converting to a preset reference voltage; an operational circuit for outputting corresponding control signals to an alarm circuit according to the input DC voltage and the reference current; and the alarm circuit for triggering alarms according to the corresponding control signals when a current is in overload. The circuit structure can conveniently and fast monitor a load current in real time, and give an alarm by displaying or buzzing when a current is in overload, thereby avoiding dangers, and furtherly avoiding false alarming caused by surge current in practical application.
Description
Technical field
The utility model relates to the low voltage electrical equipment technical field, relates in particular to the socket of a kind of overload-alarm circuit structure and integrated this overload-alarm circuit structure.
Background technology
At present, when family expenses, commercial decoration, burying electric wiring in advance underground is 2.5mm substantially
2Lead (rated current
); When the electric current overrate that passes through continuously in the electric wiring, overload situations will occur, thereby make the line insulation layer aging rapidly, reduce lead normal serviceable life, circuit burns danger such as breaking out of fire even.
Not only to increase assembly cost if install current detecting and warning device in addition on the line additional, also can take more space, influence decorative effect.
In sum, how when current overload, to carry out warning reminding easily, reduce the dangerous possibility that takes place and become the technical matters that this area needs to be resolved hurrily.
Further, provide be applicable to family and/or commercial, have the overload-alarm function and can effectively avoid surge current to produce and make a false report alert another the important techniques problem that this area needs to be resolved hurrily that becomes.
The utility model content
A technical matters to be solved in the utility model provides a kind of the have circuit structure of warning function and the socket of integrated this overload-alarm circuit structure, can monitor the size of load current in real time by this circuit structure, when load current surpasses predefined reference value, sending the indication of reporting to the police and causing danger avoiding.
Further, another technical matters that the utility model solves provides a kind of socket that has the circuit structure of warning function and be integrated with the overload-alarm circuit structure, can further judge by this circuit structure, make a false report the police thereby avoid surge current to produce to the duration of overload current.
An aspect of the present utility model provides a kind of overload-alarm circuit structure, and this overload-alarm circuit comprises: current-to-voltage converting circuit, current rectifying and wave filtering circuit, discharge circuit, display circuit and warning circuit; Current-to-voltage converting circuit wherein, the current signal that is used for the L line end that will gather is converted to voltage signal; Current rectifying and wave filtering circuit is used for voltage signal is carried out rectification and Filtering Processing, and is converted to DC voltage; Voltage to L line end and the access of N line end carries out rectification and Filtering Processing, and is converted to predefined reference voltage; And export DC voltage and reference voltage to discharge circuit respectively; Discharge circuit is used for exporting control signal corresponding according to the DC voltage and the reference voltage of input to warning circuit; Warning circuit is used for when current overload, triggers according to control signal corresponding and reports to the police.
Among the embodiment of the overload-alarm circuit structure that the utility model provides, warning circuit further comprises: Display and Alarm Circuit, be used for when current overload, and trigger visual warning indication according to control signal corresponding; And/or buzzer alarm circuit, be used for when current overload, trigger the warning indication of alarm song according to control signal corresponding.
Among the embodiment of the overload-alarm circuit structure that the utility model provides, the alarm indication circuit comprises: pilot lamp, be used for when current overload, and trigger pilot lamp according to control signal corresponding and report to the police; And, do not trigger pilot lamp according to control signal corresponding and report to the police just often.
Among the embodiment of the overload-alarm circuit structure that the utility model provides, the alarm indication circuit comprises: first pilot lamp, be used for when current overload, and under the driving of control signal corresponding, trigger visual abnormal alarm indication; And second pilot lamp, be used for just often at electric current, under the driving of the control signal of discharge circuit output, trigger visual normal indication.
Among the embodiment of the overload-alarm circuit structure that the utility model provides, buzzer alarm circuit comprises: hummer, thyristor; Wherein thyristor by the control signal driving conducting of discharge circuit output, is carried out the indication of reporting to the police thereby trigger hummer when current overload.
Among the embodiment of the overload-alarm circuit structure that the utility model provides, buzzer alarm circuit comprises: first delay circuit is used for when current overload, the ON time of thyristor is controlled, thereby after the predetermined time that prolongs thyristor ended.
Among the embodiment of the overload-alarm circuit structure that the utility model provides, the overload-alarm circuit structure also comprises: current transformer is used to gather the current signal of L line end.
Among the embodiment of the overload-alarm circuit structure that the utility model provides, the overload-alarm circuit structure also comprises: second delay circuit, be used for the DC voltage of current rectifying and wave filtering circuit conversion is carried out delay process, export discharge circuit again to, thereby the false declaration of avoiding surge current to cause is alert.
Among the embodiment of the overload-alarm circuit structure that the utility model provides, current rectifying and wave filtering circuit further comprises: the first rectifying and wave-filtering electronic circuit and the second rectifying and wave-filtering electronic circuit; Wherein the first rectifying and wave-filtering electronic circuit comprises first rectifier bridge and a RC filtering circuit, is used for voltage signal is carried out rectification and Filtering Processing, and is converted to DC voltage; And export DC voltage to second delay circuit and carry out delay process; The second rectifying and wave-filtering electronic circuit comprises second rectifier bridge, the 2nd RC filtering circuit and bleeder circuit, is used for the voltage of L line end and the access of N line end is carried out rectification and Filtering Processing, and is converted to predefined reference voltage by bleeder circuit.
Another aspect of the present utility model provides a kind of socket, and this socket comprises the overload-alarm circuit structure among aforementioned any one embodiment.
The overload-alarm circuit structure of the utility model confession and the socket of integrated this overload-alarm circuit structure can be monitored the size of load current in real time, when load current during greater than predetermined value (being current overload), can demonstration property and/or buzzing report to the police, take place thereby avoid dangerous; Further, the duration of overload current is judged, thereby avoided the alert problem of false declaration that produces owing to surge current in actual applications.
Description of drawings
Fig. 1 illustrates the synoptic diagram of a kind of overload-alarm circuit structure that the utility model embodiment provides;
Fig. 2 illustrates the structural representation of another embodiment of the overload-alarm circuit structure that the utility model provides;
Fig. 3 illustrates the structural representation of another embodiment of the overload-alarm circuit structure that the utility model provides;
Fig. 4 illustrates the structural representation of another embodiment of the overload-alarm circuit structure that the utility model provides;
Fig. 5 illustrates the structural representation of another embodiment of the overload-alarm circuit structure that the utility model provides;
Fig. 6 illustrates a kind of outward appearance front view that is integrated with the socket of overload-alarm circuit structure that the utility model provides;
Fig. 7 illustrates a kind of mounted inside synoptic diagram that is integrated with the socket of overload-alarm circuit structure that the utility model provides;
Fig. 8 illustrates a kind of exploded sketch that is integrated with the socket of overload-alarm circuit structure that the utility model provides.
Embodiment
With reference to the accompanying drawings the utility model is described more fully, exemplary embodiment of the present utility model wherein is described.
Fig. 1 illustrates the synoptic diagram of a kind of overload-alarm circuit structure that the utility model embodiment provides.
As shown in Figure 1, the overload-alarm circuit structure mainly comprises: Acquisition Circuit, current-to-voltage converting circuit, current rectifying and wave filtering circuit, discharge circuit, display circuit and warning circuit.Wherein
Acquisition Circuit is used to gather the current signal of access.In a kind of embodiment of the present utility model, this overload-alarm circuit adopts current transformer, gathers the current signal of L line end.
Current-to-voltage converting circuit, the current signal that is used for Acquisition Circuit is gathered (current signal of the L line end that collects as current transformer) is converted to voltage signal through resistance R 7.
Current rectifying and wave filtering circuit is used for voltage signal is carried out rectification and Filtering Processing, and is converted to DC voltage; Voltage to L line end and the access of N line end carries out rectification and Filtering Processing, and is converted to predefined reference voltage; And export DC voltage and reference voltage to discharge circuit respectively.Specifically: as shown in Figure 1, current rectifying and wave filtering circuit comprises the first rectifying and wave-filtering electronic circuit and the second rectifying and wave-filtering electronic circuit; Wherein, the first rectifying and wave-filtering electronic circuit comprises rectifier bridge BR2, capacitor C 3, resistance R 8, and the voltage signal of conversion is converted to DC voltage through rectifier bridge BR2, RC filtering circuit (C3 and R8); The second rectifying and wave-filtering electronic circuit comprises rectifier bridge BR1, resistance R 1, capacitor C 1, voltage stabilizing diode D3 and divider resistance R2, R3; The voltage of civil power L line end and N line end is through rectifier bridge BR1 rectification, RC filtering circuit (R1 and C1) filtering, the magnitude of voltage that output is predetermined; Preferably, thus obtain stable predefined magnitude of voltage at capacitor C 1 two ends parallel voltage-stabilizing diode D3.Obtain to be used to the reference voltage U that judges whether electric current transships through the intrinsic standoff ratio of resistance R 2, R3 subsequently
Ref
Discharge circuit is used for exporting control signal corresponding according to the DC voltage and the reference voltage of input to warning circuit.For example, the IN+ that exports amplifier U1 through the DC voltage of exporting behind the first rectifying and wave-filtering electronic circuit rectifying and wave-filtering to holds (Reference numeral 3 among Fig. 1), exports the IN-end (Reference numeral 2 among Fig. 1) of amplifier U1 to through the reference voltage of second rectifying and wave-filtering electronic circuit acquisition; When electric current normally (transships), the IN+ terminal voltage U of U1
IN+＜U
Ref, U1 output this moment U
OutBe low level (logical zero); When current overload, U
IN+＞U
Ref, U1 output this moment U
OutBe high level (logical one).
Warning circuit is used for when current overload, triggers according to control signal corresponding and reports to the police.For example, at electric current just often, represent normal green LED to be switched on, indicator current is normal; And when current overload, represent unusual red LED to be switched on, the indicator current overload.Among the embodiment of the present utility model, when electric current normal/U
OutWhen being output as logical zero, the triode Q1 that is connected in parallel on green LED (G) two ends ends, and this moment, green LED was switched on, and red LED (R) is ended; As current anomaly/U
OutWhen being output as logical one, be connected in parallel on the triode Q1 conducting at green LED two ends, this moment, green LED was cut off, and red LED is switched on.
As shown in Figure 1, the warning circuit in the present embodiment also comprises buzzer alarm circuit; When electric current normal/U
OutWhen being output as logical zero, thyristor (controllable silicon) BQ1 ends, and this moment, hummer was not worked; As current overload/U
OutWhen being output as logical one, triode Q2 ends, thyristor (controllable silicon) BQ1 conducting, and this moment, hummer was started working, and sent alerting signal; Simultaneously, U
OutThe high voltage of output charges to the capacitor C 6 that is connected in parallel between triode Q2 base stage and the emitter by resistance R 14, R14 and C6 produce a time-delay (this delay circuit can carry out the type selecting configuration according to concrete application or customer demand), when the C6 both end voltage makes the Q2 conducting, BQ1 control pole tension becomes low-voltage, controllable silicon BQ1 ends, and hummer stops to report to the police.
As shown in Figure 1, the overload-alarm circuit structure that the utility model provides, its warning circuit had both comprised the warning circuit (relating to red green LED, triode Q1 etc.) of demonstration property, also comprised buzzer alarm circuit (relating to thyristor BQ1, hummer LS1, charging delay circuit R14 and C6, triode Q2 etc.).Need illustrate, those skilled in the art can clearly know according to instruction of the present utility model, the warning circuit of overload-alarm circuit structure also can include only Display and Alarm Circuit, is used for when current overload, triggers visual warning indication according to control signal corresponding; Perhaps include only buzzer alarm circuit, be used for when current overload, trigger the warning indication of alarm song according to control signal corresponding.
Further need to prove, warning circuit at the overload-alarm circuit structure includes only in the embodiment of Display and Alarm Circuit, this alarm indication circuit both can be two pilot lamp (first pilot lamp: red LED that comprise as shown in Figure 1, be used for when current overload, under the driving of control signal corresponding, trigger visual abnormal alarm indication; And second pilot lamp: green LED, be used for just often at electric current, under the driving of the control signal that discharge circuit is exported, trigger visual normal indication), also can be that the variant that includes only a pilot lamp (is that red LED is used for when current overload, triggers pilot lamp according to control signal corresponding and report to the police; And, do not trigger this red LED pilot lamp according to control signal corresponding and report to the police) just often.For the variant that includes only a pilot lamp, it can be the red LED that keeps as shown in Figure 1, and green LED is transformed to a diode that is fit to this circuit voltage/current requirements, specific implementation will be further detailed in embodiment subsequently.
In addition, those skilled in the art can clearly know according to instruction of the present utility model: in order to realize circuit function of the present utility model, can rationally choose, mate and/or make up the type of each components and parts in each circuit module, parameter etc.; Further, in order to be suitable for different application scenarioss, can interlock circuit not broken away from the simple or equivalent modifications of the utility model main idea.For instance, as improving the device parameters index to be applicable to the early warning requirement of high voltage more or current class; Perhaps adjust the numerical value of the specification of R2/R3 intrinsic standoff ratio or voltage stabilizing diode D3 with the reduction reference voltage, thus responsive more to the monitor current overload; Perhaps with the DC voltage and the reference voltage IN-and the IN+ that are connected to amplifier U1 respectively of input, and correspondingly adjust incoming end of indication warning circuit (as red green LED location swap) and/or buzzer alarm circuit or the like.
According to earlier figures 1 described overload-alarm circuit structure, those skilled in the art can clearly know: it can be when current overload, demonstration property and/or buzzer warning, thus can avoid contingent danger owing to current overload.But, in actual applications because the surge current in the circuit, of short duration but may the time regular meeting produce to make a false report alert problem.To make a false report alertly in order further reducing, the current overload phenomenon effectively to be warned, the utility model provides the overload-alarm circuit with delay circuit (integrating circuit), and specific as follows to state embodiment described.
Fig. 2 illustrates the structural representation of another embodiment of the overload-alarm circuit structure that the utility model provides.
As shown in Figure 2, the overload-alarm circuit structure mainly comprises Acquisition Circuit, delay circuit (integrating circuit), current-to-voltage converting circuit, current rectifying and wave filtering circuit, discharge circuit, display circuit and warning circuit.Wherein, Acquisition Circuit, current-to-voltage converting circuit, current rectifying and wave filtering circuit, discharge circuit, display circuit and warning circuit can be respectively same or similar with corresponding circuit shown in Figure 1.For for purpose of brevity, repeat no more here.
As shown in Figure 2, delay circuit (integrating circuit) comprising: the R9 that is connected in parallel, R10 and capacitor C 4 are used for carrying out delay process through the DC voltage of rectifier bridge BR2 rectification, RC filtering circuit (R8 and C3) conversion; Export the DC voltage of delay process to discharge circuit more subsequently.This delay circuit can realize that overload conversion speed changes along with the overload current size, and it is also fast more to have served as big more its state exchange of live stream, thereby the false declaration of avoiding surge current to cause effectively is alert.
Need illustrate, those skilled in the art can clearly know according to instruction of the present utility model: can according to concrete applied scene maybe needs come each element in the delay circuit is carried out the selection and the combination of performance parameter, thereby realize the time-delay demand of different application.
Fig. 3 illustrates the structural representation of another embodiment of the overload-alarm circuit structure that the utility model provides.
As shown in Figure 3, this overload-alarm circuit structure mainly comprises Acquisition Circuit, delay circuit, current-to-voltage converting circuit, current rectifying and wave filtering circuit, discharge circuit, display circuit and warning circuit.Wherein, Acquisition Circuit, delay circuit, current-to-voltage converting circuit, current rectifying and wave filtering circuit, discharge circuit, display circuit can be respectively same or similar with corresponding circuit shown in Figure 2.For for purpose of brevity, repeat no more here.
As shown in Figure 3, this warning circuit has omitted buzzer alarm circuit shown in Figure 2 for the warning circuit of demonstration property; The warning circuit of this demonstration is used for when current overload, triggers visual warning indication according to control signal corresponding.Specifically, this alarm indication circuit further comprises: the first pilot lamp LED (R), be used for when current overload, and under the driving of the control signal (logical one) that amplifier U1 exports, trigger visual abnormal alarm indication, lighted as red LED; And the second pilot lamp LED (G), be used for just often at electric current, trigger the normal indication of visuality down in the driving of the control signal (logical zero) of amplifier U1 output, lighted as green LED.
Need to prove that this embodiment can further be modified to: the warning circuit of demonstration property includes only a unusual pilot lamp, is used for when current overload, triggers pilot lamp according to control signal corresponding and reports to the police; And, do not trigger pilot lamp according to control signal corresponding and report to the police just often.Specifically, has only a red LED pilot lamp in the warning circuit of demonstration property, and LED green among Fig. 3 is replaced with common diode, and under the driving of the control signal (logical one) that amplifier U1 exports, trigger visual abnormal alarm indication, lighted as red LED; When electric current just often, diode is switched under the driving of the control signal (logical zero) of amplifier U1 output, and red LED is ended.
Fig. 4 illustrates the structural representation of another embodiment of the overload-alarm circuit structure that the utility model provides.
As shown in Figure 4, this overload-alarm circuit structure mainly comprises Acquisition Circuit, delay circuit, current-to-voltage converting circuit, current rectifying and wave filtering circuit, discharge circuit, display circuit and warning circuit.Wherein, Acquisition Circuit, delay circuit, current-to-voltage converting circuit, current rectifying and wave filtering circuit, discharge circuit, display circuit can be respectively same or similar with corresponding circuit shown in Figure 2.For for purpose of brevity, repeat no more here.
As shown in Figure 4, this warning circuit is a buzzer alarm circuit, and demonstration warning circuit shown in Figure 2 (promptly all being replaced by general-purpose diode D4 and D5 corresponding to the red green LED in tell-tale warning circuit) has been carried out modification; This buzzer alarm circuit further comprises: hummer, thyristor; Wherein thyristor BQ1 by control signal (as logical one) the driving conducting of amplifier U1 circuit output, carries out the indication of reporting to the police thereby trigger hummer when current overload.Simultaneously, U
OutThe high voltage of output charges to the capacitor C 6 that is connected in parallel between triode Q2 base stage and the emitter by resistance R 14, R14 and C6 produce a time-delay (this delay circuit can carry out the type selecting configuration according to concrete application or customer demand), when the C6 both end voltage makes the Q2 conducting, BQ1 control pole tension becomes low-voltage, controllable silicon ends, and hummer stops to report to the police.
Need to prove, in this embodiment, all be replaced by general-purpose diode D4 and D5 corresponding to the red green LED in the warning circuit of demonstration shown in Figure 2, when electric current normal/U
OutWhen being output as logical zero, the triode Q1 that is connected in parallel on the D5 two ends ends, and this moment, D5 was switched on, and D4 ends; As current anomaly/U
OutWhen being output as logical one, be connected in parallel on the triode Q1 conducting at D5 two ends, this moment, D5 was cut off, and the D4 conducting.
Fig. 5 illustrates the structural representation of another embodiment of the overload-alarm circuit structure that the utility model provides.
As shown in Figure 5, this overload-alarm circuit structure mainly comprises Acquisition Circuit, delay circuit, current-to-voltage converting circuit, current rectifying and wave filtering circuit, discharge circuit, display circuit and warning circuit.Wherein, Acquisition Circuit, delay circuit, current-to-voltage converting circuit, current rectifying and wave filtering circuit, discharge circuit, display circuit can be respectively same or similar with corresponding circuit shown in Figure 2.For for purpose of brevity, repeat no more here.
As shown in Figure 5, this warning circuit comprises buzzer alarm circuit and demonstration property warning circuit, wherein buzzer alarm circuit is identical with buzzer alarm circuit shown in Figure 2, and this demonstration warning circuit includes only a LED light, is replaced by general-purpose diode D4 corresponding to the normal green LED of electric current.When current overload, under the driving of the control signal (logical one) that amplifier U1 exports, trigger visual abnormal alarm indication, this moment, red LED was lighted; With at electric current just often, diode is switched under the driving of the control signal (logical zero) that amplifier U1 exports, and red LED is ended.
Fig. 6 illustrates a kind of outward appearance front view that is integrated with the socket of overload-alarm circuit structure that the utility model provides.
As shown in Figure 6, the socket that is integrated with the overload-alarm circuit structure that the utility model provides is the integrated electronic module of overload-alarm circuit on the basis of common Universal Socket, and therefore, it can adopt current general Universal Socket.Consent shown in the figure can with GB
Two insert,
Three slotting, English marks
With
The plug of various criterions such as U.S. mark, moral mark connects.
The electric current of socket outward appearance mark shown in Figure 6 normal " Normal " is corresponding to green LED, and current overload " Overload " is indicated corresponding to red LED; But those skilled in the art can clearly know according to instruction of the present utility model, and this socket outward appearance is corresponding to the circuit structure of the warning circuit with demonstration property, if other technical scheme in the employing previous embodiment, this outward appearance can be done simple adjustment; For example, if warning circuit only has buzzer alarm circuit, then socket does not have LED light and text description thereof in appearance; The technical scheme of if the warning circuit of the demonstration in the warning circuit adopts when unusual bright lamp (mode of being replaced by general-purpose diode as green LED), then apparent text description can be the bright interval scale current overload of red light, and the interval scale electric current is normal and red light goes out.
Fig. 7 illustrates a kind of mounted inside synoptic diagram that is integrated with the socket of overload-alarm circuit structure that the utility model provides.
As shown in Figure 7, the formed electronic module of overload-alarm circuit structure is fixed on the socket back seat (Reference numeral 9 among Fig. 8) with screw a, and be riveted together by power connecting sheet ( Reference numeral 11,12 among Fig. 8) and terminal (N gate terminal and L gate terminal), when product inserts civil power by normal wiring, for the functional module of overload-alarm circuit structure provides power supply.N utmost point sleeve (Reference numeral 5 among Fig. 8) separates with the N gate terminal, links to each other with lead (Reference numeral 14 among Fig. 8).L gate terminal and L utmost point sleeve (Reference numeral 6 among Fig. 8) connecting line (Reference numeral 13 among Fig. 8) passes mutual inductor, gathers the numerical value of load current in real time.When load current during less than setting value, LED lamp b shows green; When load current surpassed setting value, delay circuit (integrating circuit) can judge that when being defined as overload situations, LED lamp b shows that redness, hummer c send alarm immediately to the size and the duration of load current.If overload is excluded, load current is during less than ratings, and alarm condition is removed, and LED lamp b shows and recovers green.
Fig. 8 illustrates a kind of exploded sketch that is integrated with the socket of overload-alarm circuit structure that the utility model provides.
As shown in Figure 8, in each parts of this socket: 1 is frame; 2 is the Universal Socket protecgulum; 3 is the shutter spring; 4 is omnipotent shutter; 5 is omnipotent N utmost point sleeve; 6 is omnipotent L utmost point sleeve; 7 is omnipotent ground connection sleeve parts; 8 are overload Presentation Function electronic module; 9 is back seat; 10 is the socket installing plate; 11 is L terminal power connecting sheet assembly; 12 is N terminal power connecting sheet assembly; 13 is the L polar conductor; 14 is the N polar conductor.Assemble according to Fig. 7 and mode shown in Figure 8 with upper-part, abundant compatible existing Universal Socket, and effectively utilized its inner space, simple for structure, easy to use.
With reference to aforementioned the utility model exemplary description, those skilled in the art can clearly know and the utlity model has following advantage:
1, the overload-alarm circuit structure that provides of the utility model and the socket that is integrated with this overload-alarm circuit structure can be monitored the size of load current in real time, when load current during greater than predetermined value (being current overload), can demonstration property and/or buzzing report to the police, take place thereby avoid dangerous.
2, the overload-alarm circuit structure that provides of the utility model and the socket that is integrated with this overload-alarm circuit structure can be judged the duration of overload current further, thereby avoid the alert problem of false declaration that produces owing to surge current in actual applications.
3, the overload-alarm circuit structure that provides of the utility model and the socket that is integrated with this overload-alarm circuit structure are comparatively succinct, can provide multiple variant, for practical application provides multiple solution.
4, the socket that is integrated with the overload-alarm circuit structure that the utility model provides makes full use of the inner space of socket, need not to carry out big technological transformation, can compatible current general Universal Socket, and versatility and compatible good.
Description of the present utility model provides for example with for the purpose of describing, and is not exhaustively or with the utility model to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present utility model and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment that have various modifications that the utility model design is suitable for special-purpose.
Claims (10)
1. an overload-alarm circuit structure is characterized in that, described overload-alarm circuit comprises: current-to-voltage converting circuit, current rectifying and wave filtering circuit, discharge circuit, display circuit and warning circuit; Wherein
Described current-to-voltage converting circuit, the current signal that is used for the L line end that will gather is converted to voltage signal;
Described current rectifying and wave filtering circuit is used for described voltage signal is carried out rectification and Filtering Processing, and is converted to DC voltage; Voltage to L line end and the access of N line end carries out rectification and Filtering Processing, and is converted to predefined reference voltage; And export described DC voltage and reference voltage to described discharge circuit respectively;
Described discharge circuit is used for exporting control signal corresponding according to the described DC voltage and the reference voltage of input to described warning circuit;
Described warning circuit is used for when current overload, triggers according to corresponding control signal and reports to the police.
2. overload-alarm circuit structure according to claim 1 is characterized in that, described warning circuit further comprises:
Display and Alarm Circuit is used for when current overload, triggers visual warning indication according to corresponding control signal; And/or
Buzzer alarm circuit is used for when current overload, triggers the warning indication of alarm song according to corresponding control signal.
3. overload-alarm circuit structure according to claim 2 is characterized in that, described alarm indication circuit comprises:
Pilot lamp is used for when current overload, triggers described pilot lamp according to corresponding control signal and reports to the police; And, do not trigger described pilot lamp according to corresponding control signal and report to the police just often.
4. overload-alarm circuit structure according to claim 2 is characterized in that, described alarm indication circuit comprises:
First pilot lamp is used for when current overload, triggers visual abnormal alarm indication under the driving of corresponding control signal; And
Second pilot lamp is used at electric current just often, triggers visual normal indication under the driving of the control signal that described discharge circuit is exported.
5. overload-alarm circuit structure according to claim 2 is characterized in that, described buzzer alarm circuit comprises: hummer, thyristor; Wherein
Described thyristor by the control signal driving conducting of described discharge circuit output, is carried out the indication of reporting to the police thereby trigger described hummer when current overload.
6. overload-alarm circuit structure according to claim 5 is characterized in that, described buzzer alarm circuit also comprises:
First delay circuit is used for when current overload, the ON time of described thyristor is controlled, thereby after the predetermined time that prolongs described thyristor is ended.
7. overload-alarm circuit structure according to claim 1 is characterized in that, described overload-alarm circuit structure also comprises: current transformer is used to gather the current signal of L line end.
8. according to any described overload-alarm circuit structure of claim 1-7, it is characterized in that, described overload-alarm circuit structure also comprises: second delay circuit, be used for the described DC voltage of described current rectifying and wave filtering circuit conversion is carried out delay process, export described discharge circuit again to, thereby the false declaration of avoiding surge current to cause is alert.
9. overload-alarm circuit structure according to claim 8 is characterized in that, described current rectifying and wave filtering circuit further comprises: the first rectifying and wave-filtering electronic circuit and the second rectifying and wave-filtering electronic circuit; Wherein
The first rectifying and wave-filtering electronic circuit comprises first rectifier bridge and a RC filtering circuit, is used for described voltage signal is carried out rectification and Filtering Processing, and is converted to DC voltage; And export described DC voltage to described second delay circuit and carry out delay process;
The second rectifying and wave-filtering electronic circuit comprises second rectifier bridge, the 2nd RC filtering circuit and bleeder circuit, is used for the voltage of L line end and the access of N line end is carried out rectification and Filtering Processing, and is converted to predefined reference voltage by bleeder circuit.
10. a socket is characterized in that, described socket comprises: according to any described overload-alarm circuit structure among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206800845U CN202002966U (en) | 2010-12-23 | 2010-12-23 | Overload alarm circuit structure and socket for integrating the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206800845U CN202002966U (en) | 2010-12-23 | 2010-12-23 | Overload alarm circuit structure and socket for integrating the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202002966U true CN202002966U (en) | 2011-10-05 |
Family
ID=44705703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206800845U Expired - Lifetime CN202002966U (en) | 2010-12-23 | 2010-12-23 | Overload alarm circuit structure and socket for integrating the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202002966U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788896A (en) * | 2012-08-05 | 2012-11-21 | 孙文亮 | Socket current detection device |
| CN102957061A (en) * | 2012-11-30 | 2013-03-06 | 东莞市凯恩电子科技有限公司 | Manually reset overload and overtemperature protection power socket |
-
2010
- 2010-12-23 CN CN2010206800845U patent/CN202002966U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788896A (en) * | 2012-08-05 | 2012-11-21 | 孙文亮 | Socket current detection device |
| CN102957061A (en) * | 2012-11-30 | 2013-03-06 | 东莞市凯恩电子科技有限公司 | Manually reset overload and overtemperature protection power socket |
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Granted publication date: 20111005 |