CN201466664U - Intelligent cutoff with alarm - Google Patents
Intelligent cutoff with alarm Download PDFInfo
- Publication number
- CN201466664U CN201466664U CN2009200605225U CN200920060522U CN201466664U CN 201466664 U CN201466664 U CN 201466664U CN 2009200605225 U CN2009200605225 U CN 2009200605225U CN 200920060522 U CN200920060522 U CN 200920060522U CN 201466664 U CN201466664 U CN 201466664U
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- chip microcomputer
- relay
- resistance
- limiter
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Abstract
The utility model relates to an intelligent cutoff with an alarm, which comprises a circuit sampling and converting circuit, a comparator circuit, a single chip microcomputer, an alarm circuit, a silicon controlled thyristor, a relay and a power supply circuit, wherein the current sampling and converting circuit transmits real-time voltage signals to the comparator circuit, high level signals or low level signals are transmitted to the single chip microcomputer after the real-time voltage signals are processed by the comparator circuit, and working states of the alarm circuit and a trigger switch can be controlled humanly by the single chip microcomputer according to programs preset inside. Further, the single chip microcomputer is used for replacing a conventional control circuit consisting of electronic devices, and then product volume can be reduced effectively and diversified design can be achieved, thereby meeting marketing requirements.
Description
Technical field
The utility model relates to a kind of intelligent electricity-limiter, refers in particular to a kind of intelligent electricity-limiter with warning.
Background technology
For a long time, the student of many schools is at the dormitory high-power electric appliance that uses violating the regulations, usually, the careless initiation fire of electricity consumption takes place time and again because of causing unfortunate death incident, make everyone painful, have higher requirement also for again school dormitory's management of power use, to the confiscating, impose a fine, punish of the dangerous electrical appliance of highly energy-consuming, all fundamentally do not change the vicious circle of school dormitory's management vicious circle chronically.Deep apology afterwards, the great number reparations does not have meaningful for the life that passes; For having stopped the generation of this type of accident, the various electricity-limiters that gone out sample on the market, when utilizing this electricity-limiter to detect transgression for using electricity, directly cut off the electricity supply, with the electricity consumption that ensures safety, traditional then electricity-limiter function singleness, do not have the hommization tupe, make troubles in use, and whole electricity-limiter circuit all adopts electronic devices and components to add to give realization, make that the electricity-limiter volume is bigger, be unfavorable for marketing.
The utility model content
The utility model is at the existing disappearance of above-mentioned prior art, and main purpose is to provide the intelligent electricity-limiter of little, the easy to use and band warning function of a kind of volume.
For realizing above-mentioned purpose, the utility model is taked following technical scheme:
A kind of intelligent electricity-limiter with warning comprises a current sampling and change-over circuit, is used to gather the electric current of load circuit, and converts current signal to voltage signal; One comparison circuit is to be electrically connected with current sampling and change-over circuit, is used for the voltage signal of received current sampling testing circuit, and compares with setting voltage, to export a level signal; One single-chip microcomputer is to be electrically connected with comparison circuit, according to the level signal output relevant work instruction of comparison circuit; One warning circuit is to be electrically connected with single-chip microcomputer, by this warning circuit work of this Single-chip Controlling; One trigger switch is to be electrically connected with single-chip microcomputer, is started or is closed this trigger switch by this single-chip microcomputer; One relay is used to cut off the power supply of load circuit; This relay system is electrically connected with trigger switch, and according to this trigger switch startup or close this relay work of controlling; And power supply circuits, to provide foregoing circuit required working power.
Be connected with a leakage protection circuit on the described trigger switch.
Be connected with a LED light on the described relay.
Described trigger switch is controllable silicon or triode.
Described power supply circuits comprise first power circuit and second source circuit, and this first power circuit is connected with single-chip microcomputer, provides power supply for single-chip microcomputer and comparison circuit; This second source circuit is connected with relay, provides driving power for the actuating of relay.
Described current sampling and change-over circuit system are made of sample circuit and signal processing circuit, and this sample circuit comprises sample resistance R0, clamp diode D6D7, ZJB relay normally-closed contact; This signal processing circuit comprises operational amplifier U1A, divider resistance R9R10, signal rectification diode D5, filter capacitor C8, converts voltage signal with the current signal that sample circuit is collected to through signal processing circuit; Described comparison circuit comprises adjustable resistance VR, divider resistance R12, R13, R14 and operational amplifier U1B, described signal processing circuit is received on in-phase end 5 pin of operational amplifier U1B by this adjustable resistance VR and divider resistance R12, by regulating the input voltage that resistance VR place in circuit changes last 5 pin of U1B, inverting input 6 pin of U1B carry out dividing potential drop by resistance R 14 and R13 provides a reference voltage, wherein utilize 5 pin and the 6 pin voltages of U1B to compare, to export a level signal to single-chip microcomputer, handle the work of back output relevant work commands for controlling warning circuit and trigger switch by this single-chip microcomputer.
Described first power circuit is made up of decompression capacitor C1, bleeder resistance R1, rectifier diode D2, voltage stabilizing didoe DZ, filter capacitor C3, three-terminal regulator block Q2, output termination filter capacitor C6 and the C5 of this three-terminal regulator block Q2.
Described second source circuit is made up of rectifier diode D3, current-limiting resistance R2, filter capacitor C2, the positive output end of the just very ac-dc converter circuit of capacitor C 2; After the alternating voltage process rectifier diode D2 rectification, pass through current-limiting resistance R2 step-down again, export a low direct voltage,, make capacitor C 2 two ends put aside a direct voltage relatively stably through capacitor C 2 filtering and energy storage.
The relative prior art of the utility model, its advantage is: carry the real-time voltage signal by current sampling and change-over circuit in comparison circuit, output high level signal or low level signal are to single-chip microcomputer after comparison circuit is handled, and but single-chip microcomputer can be according to the formula hommization control warning circuit default in it and the operating state of trigger switch, and adopt single-chip microcomputer to replace the control circuit that the conditional electronic components and parts are formed, can dwindle small product size effectively, also can reach the diversification design, to satisfy the demand in market.
Description of drawings
Fig. 1 is the utility model circuit block diagram;
Fig. 2 is the utility model physical circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
As shown in Figure 1, a kind of intelligent electricity-limiter with warning, comprise current sampling and change-over circuit 1, comparison circuit 2, single-chip microcomputer 3, warning circuit 4, controllable silicon 5, relay 6 and power supply circuits 7, present embodiment system describes as trigger switch with controllable silicon, certainly can also be triode, do not add at this and to give restriction, wherein:
Described current sampling and change-over circuit 1 are used to gather the electric current of load circuit, and convert current signal to voltage signal; This comparison circuit 2 is to be electrically connected with current sampling and change-over circuit 1, is used for the voltage signal of received current sampling testing circuit 1, and compares with setting voltage, to export a level signal; As required, be preset with different control formulas in this single-chip microcomputer 3, it is to be electrically connected with comparison circuit 2, according to the level signal output relevant work instruction of comparison circuit 2; Described warning circuit 4 and controllable silicon 5 are connected on this single-chip microcomputer 3, are controlled the work of this warning circuit 4 and controllable silicon 5 according to the level signal of comparison circuit 2 outputs by this single-chip microcomputer 3; This relay 6 is used to cut off the power supply of load circuit, system is electrically connected with controllable silicon 5, it starts according to this controllable silicon 5 or closes this relay 6 work of controlling, on controllable silicon 5, be connected with a leakage protection circuit 8, when load circuit produces electric leakage, directly drive controllable silicon 5, control relay 6 cuts out load power source; Be connected with a LED light 9 on relay 6, when closing load power source after the circuit breaker 6 energising work, this LED light 9 can be light; Described power supply circuits 7 are in order to provide foregoing circuit required working power, and described power supply circuits 10 comprise first power circuit 71 and second source circuit 72, and this first power circuit 71 is connected with single-chip microcomputer 3, provide power supply for single-chip microcomputer 3 and comparison circuit 2; This second source circuit 72 is connected with relay 6, provides driving power for relay 6 actions.
For making the clear single-chip microcomputer hommization control of understanding, now describe for example, the one way is: when high level of comparison circuit 2 outputs, single-chip microcomputer 3 can be exported an instruction according to formula and make warning circuit 4 work, sound the alarm and pick up counting, and do not detect comparison circuit simultaneously and whether be high level always, if in the time of setting, comparison circuit 2 outputs become low level by high level, and then single-chip microcomputer 3 can instruction of output allow warning circuit 4 quit work; If relatively circuit 2 is the output high level in setting-up time always, after then having arrived the time of setting, instruction of single-chip microcomputer 3 outputs allows controllable silicon 5 conductings drive relay 6, relay 6 cuts off the power supply of load major loop, load is stopped power supply, LED light 9 work simultaneously make LED light often bright. and its two way is: when high level of comparison circuit 2 outputs, instruction of single-chip microcomputer 3 outputs makes warning circuit 4 work, sound the alarm and pick up counting, exporting an instruction simultaneously allows controllable silicon 5 conductings drive relay 6, relay 6 cuts off the power supply of load major loop, load is stopped power supply, after crossing certain hour, controllable silicon 5 is closed in instruction of single-chip microcomputer 3 outputs, allow relay 6 return to normal, the load normal power supply, if comparison circuit 2 is still exported a high level, instruction of single-chip microcomputer 3 outputs makes timing alarming circuit 4 work, sound the alarm and pick up counting, exporting an instruction simultaneously allows controllable silicon 5 conductings drive relay 6, relay 6 cuts off the power supply of load major loop, load is stopped power supply, after crossing certain hour, controllable silicon 5 is closed in instruction of single-chip microcomputer 3 outputs, allow relay 5 return to normal, the load normal power supply, so circulation is after arriving the time of setting, just differ and remake above-mentioned circulation, directly close the power supply of load, if in cyclic process, when detecting comparison circuit 2 output low levels, the load normal power supply, close warning simultaneously. so can form above-mentioned two kinds of situation of working, its with single-chip microcomputer in to establish formula relevant, so the comparatively hommization of employing Single-chip Controlling, its formula can be carried out different Programming Design according to demand, does not add at this and gives detailed description.
In conjunction with shown in Figure 2, described current sampling and change-over circuit 1 are to be made of sample circuit 11 and signal processing circuit 12 again, and this sample circuit 11 comprises sample resistance R0, clamp diode D6D7, ZJB relay normally-closed contact; This signal processing circuit 12 comprises operational amplifier U1A, divider resistance R9R10, signal rectification diode D5, filter capacitor C8, converts voltage signal with the current signal that sample circuit 11 is collected to through signal processing circuit 12; Described comparison circuit 2 comprises adjustable resistance VR, divider resistance R12, R13, R14 and operational amplifier U1B, described signal processing circuit 12 is received on in-phase end 5 pin of operational amplifier U1B by this adjustable resistance VR and divider resistance R12, by regulating the input voltage that resistance VR place in circuit changes last 5 pin of U1B, inverting input 6 pin of U1B carry out dividing potential drop by resistance R 14 and R13 provides a reference voltage, wherein utilize 5 pin and the 6 pin voltages of U1B to compare, to export a level signal to single-chip microcomputer U2, handle the work of back output relevant work commands for controlling warning circuit and controllable silicon Q1 by this single-chip microcomputer U2.Description above work situation can be consulted during for high flat signal among the input single-chip microcomputer U2 does not add to give at this and gives unnecessary details.Described first power circuit 71 is made up of decompression capacitor C1, bleeder resistance R1, rectifier diode D2, voltage stabilizing didoe DZ, filter capacitor C3, three-terminal regulator block Q2, output termination filter capacitor C6 and the C5 of this three-terminal regulator block Q2.Described second source circuit 72 is made up of rectifier diode D3, current-limiting resistance R2, filter capacitor C2, the positive output end of the just very ac-dc converter circuit of capacitor C 2; After the alternating voltage process rectifier diode D2 rectification, pass through current-limiting resistance R2 step-down again, export a low direct voltage, through capacitor C 2 filtering and energy storage, make capacitor C 2 two ends put aside a direct voltage relatively stably, after the controllable silicon conducting, direct voltage is added on the relay through current-limiting resistance R2, rectifier diode D2, make the entire circuit structure more oversimplify more.
The utility model design focal point is to carry the real-time voltage signal by current sampling and change-over circuit in comparison circuit, output high level signal or low level signal are to single-chip microcomputer after comparison circuit is handled, and but single-chip microcomputer can be according to the formula hommization control warning circuit default in it and the operating state of trigger switch, and adopt single-chip microcomputer to replace the control circuit that the conditional electronic components and parts are formed, can dwindle small product size effectively, also can reach the diversification design, to satisfy the demand in market.
The above, it only is the utility model preferred embodiment, be not that technical scope of the present utility model is imposed any restrictions, so every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment did.
Claims (8)
1. the intelligent electricity-limiter with warning is characterized in that: comprise
One current sampling and change-over circuit are used to gather the electric current of load circuit, and convert current signal to voltage signal;
One comparison circuit is to be electrically connected with current sampling and change-over circuit, is used for the voltage signal of received current sampling testing circuit, and compares with setting voltage, to export a level signal;
One single-chip microcomputer is to be electrically connected with comparison circuit, according to the level signal output relevant work instruction of comparison circuit;
One warning circuit is to be electrically connected with single-chip microcomputer, by this warning circuit work of this Single-chip Controlling;
One trigger switch is to be electrically connected with single-chip microcomputer, is started or is closed this trigger switch by this single-chip microcomputer;
One relay is used to cut off the power supply of load circuit; This relay system is electrically connected with trigger switch, and according to this trigger switch startup or close this relay work of controlling; And
One power supply circuits are to provide foregoing circuit required working power.
2. the intelligent electricity-limiter of reporting to the police according to the described band of claim 1 is characterized in that: be connected with a leakage protection circuit on the described trigger switch.
3. the intelligent electricity-limiter of reporting to the police according to the described band of claim 1 is characterized in that: be connected with a LED light on the described relay.
4. according to the intelligent electricity-limiter of the described band warning of claim 1, it is characterized in that: described power supply circuits comprise first power circuit and second source circuit, and this first power circuit is connected with single-chip microcomputer, provides power supply for single-chip microcomputer and comparison circuit; This second source circuit is connected with relay, provides driving power for the actuating of relay.
5. according to the intelligent electricity-limiter of the described band warning of claim 1, it is characterized in that: described trigger switch is controllable silicon or triode.
6. the intelligent electricity-limiter of reporting to the police according to the described band of claim 1, it is characterized in that: described current sampling and change-over circuit system are made of sample circuit and signal processing circuit, and this sample circuit comprises sample resistance R0, clamp diode D6D7, ZJB relay normally-closed contact; This signal processing circuit comprises operational amplifier U1A, divider resistance R9R10, signal rectification diode D5, filter capacitor C8, converts voltage signal with the current signal that sample circuit is collected to through signal processing circuit; Described comparison circuit comprises adjustable resistance VR, divider resistance R12, R13, R14 and operational amplifier U1B, described signal processing circuit is received on in-phase end 5 pin of operational amplifier U1B by this adjustable resistance VR and divider resistance R12, by regulating the input voltage that resistance VR place in circuit changes last 5 pin of U1B, inverting input 6 pin of U1B carry out dividing potential drop by resistance R 14 and R13 provides a reference voltage, wherein utilize 5 pin and the 6 pin voltages of U1B to compare, to export a level signal to single-chip microcomputer, handle the work of back output relevant work commands for controlling warning circuit and trigger switch by this single-chip microcomputer.
7. the intelligent electricity-limiter of reporting to the police according to the described band of claim 4, it is characterized in that: described first power circuit is made up of decompression capacitor C1, bleeder resistance R1, rectifier diode D2, voltage stabilizing didoe DZ, filter capacitor C3, three-terminal regulator block Q2, output termination filter capacitor C6 and the C5 of this three-terminal regulator block Q2.
8. according to the intelligent electricity-limiter of the described band warning of claim 4, it is characterized in that: described second source circuit is made up of rectifier diode D3, current-limiting resistance R2, filter capacitor C2, the positive output end of the just very ac-dc converter circuit of capacitor C 2; After the alternating voltage process rectifier diode D2 rectification, pass through current-limiting resistance R2 step-down again, export a low direct voltage, 2 filtering make capacitor C 2 two ends put aside a relative direct voltage stably with energy storage through capacitor C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200605225U CN201466664U (en) | 2009-07-15 | 2009-07-15 | Intelligent cutoff with alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200605225U CN201466664U (en) | 2009-07-15 | 2009-07-15 | Intelligent cutoff with alarm |
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| Publication Number | Publication Date |
|---|---|
| CN201466664U true CN201466664U (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200605225U Expired - Fee Related CN201466664U (en) | 2009-07-15 | 2009-07-15 | Intelligent cutoff with alarm |
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| Country | Link |
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| CN (1) | CN201466664U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895120A (en) * | 2010-06-29 | 2010-11-24 | 河南省电力公司济源供电公司 | Timing and peak limiting automatic control device of power circuit |
| CN104484263A (en) * | 2014-12-29 | 2015-04-01 | 李大庆 | Working condition monitoring circuit |
| CN105627512A (en) * | 2016-01-04 | 2016-06-01 | 广州金田瑞麟净化设备制造有限公司 | Control circuit of air purifier |
| CN108771491A (en) * | 2018-05-24 | 2018-11-09 | 宁波国盛电器有限公司 | A kind of sandwich unit |
| CN108944487A (en) * | 2017-05-27 | 2018-12-07 | 苏州智享云信息科技有限公司 | A kind of charging circuit for electric vehicles security protection system |
-
2009
- 2009-07-15 CN CN2009200605225U patent/CN201466664U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895120A (en) * | 2010-06-29 | 2010-11-24 | 河南省电力公司济源供电公司 | Timing and peak limiting automatic control device of power circuit |
| CN104484263A (en) * | 2014-12-29 | 2015-04-01 | 李大庆 | Working condition monitoring circuit |
| CN104484263B (en) * | 2014-12-29 | 2017-12-15 | 李大庆 | Working state monitoring circuit |
| CN105627512A (en) * | 2016-01-04 | 2016-06-01 | 广州金田瑞麟净化设备制造有限公司 | Control circuit of air purifier |
| CN108944487A (en) * | 2017-05-27 | 2018-12-07 | 苏州智享云信息科技有限公司 | A kind of charging circuit for electric vehicles security protection system |
| CN108944487B (en) * | 2017-05-27 | 2021-08-31 | 上海电享信息科技有限公司 | Safety protection system for charging circuit of electric vehicle |
| CN108771491A (en) * | 2018-05-24 | 2018-11-09 | 宁波国盛电器有限公司 | A kind of sandwich unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20110715 |