CN202172254U - Digital recognition electric power limiting device - Google Patents
Digital recognition electric power limiting device Download PDFInfo
- Publication number
- CN202172254U CN202172254U CN2011202922528U CN201120292252U CN202172254U CN 202172254 U CN202172254 U CN 202172254U CN 2011202922528 U CN2011202922528 U CN 2011202922528U CN 201120292252 U CN201120292252 U CN 201120292252U CN 202172254 U CN202172254 U CN 202172254U
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- circuit
- power supply
- single chip
- machine controlling
- chip machine
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Abstract
The utility model relates to a circuit protecting device, especially relates to a digital recognition electric power limiting device, composed of a load current acquisition circuit, a comparator circuit, a one-chip microcomputer control circuit, GSM module emission circuit, an overvoltage protection circuit, an alarm circuit and a drive circuit. An output voltage signal acquired by the load current acquisition circuit is compared by the comparator circuit, and then the one-chip microcomputer control circuit is used to detect high and low levels, outputs via the alarm circuit and the drive circuit and is connected with the GSM module emission circuit, and the overvoltage protection circuit transmits an electrical signal processed by the overvoltage protection circuit to the comparator circuit. The digital recognition electric power limiting device employs the load current acquisition circuit to compare and then uses the one-chip microcomputer control circuit to detect the high and low levels, so that whether a high power electricity consumption is existed can be judged; and when a power supply current exceeds a definite value, a power supply circuit is cut-off automatically, and at the same time, the digital recognition electric power limiting device also has an effect of enabling an internal program to be recovered automatically.
Description
Technical field
The utility model relates to a kind of circuit protection device, particularly is a kind of digit recognition device of rationing the power supply.
Background technology
It is lower that general dormitory building and warehouse etc. need brownout place, moment to open power consumption equipment power, like small household appliances devices such as electric consumption on lighting, computers; The private opening electric kettle, high-power heat-producing device such as electrical bar is easy to take place electrical fire in case carelessness and electricity consumption are improper; When the power supply object is undergone mutation or damaged; Or other human factor etc. all can cause the supply current overload, thus generally in power supply circuits, install the device of rationing the power supply additional, when supply current overloads; The device of rationing the power supply cuts off power supply circuits automatically, plays the protective effect to power supply circuits.
The utility model content
The purpose of the utility model provides a kind of stable and reliable for performance, has the device of rationing the power supply of digit recognition technology.
The technical scheme that the utility model adopted is such: a kind of digit recognition device of rationing the power supply; Form by load current Acquisition Circuit, comparator circuit, single chip machine controlling circuit, gsm module radiating circuit, overvoltage crowbar, alert acoustic-electric road drive circuit; The output voltage signal of said load current Acquisition Circuit collection is after comparator circuit compares; Detect high-low level through single chip machine controlling circuit; Said single chip machine controlling circuit divides alert acoustic-electric road and the output of drive circuit two-way, and said single chip machine controlling circuit connects a gsm module radiating circuit, and the signal of telecommunication after said overvoltage crowbar is handled it is transferred to comparator circuit.
Said comparator circuit is provided with the current monitoring measuring point.
Said single chip machine controlling circuit is connected with watchdog circuit.
Through adopting the aforementioned techniques scheme; The beneficial effect of the utility model is: this digit recognition is rationed the power supply and is detected high-low level through single chip machine controlling circuit after device adopts the Acquisition Circuit load current to compare; Can judge whether to exist high-power electricity consumption, after supply current surpasses certain value, cut off power supply circuits automatically; Simultaneously, this device also has the effect that internal processes is recovered automatically.
Description of drawings
Further specify the utility model below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the circuit theory diagrams of the utility model.
Embodiment
Embodiment 1
Like Fig. 1, shown in Figure 2; The load current Acquisition Circuit is made up of inductance L 1, resistance 1R1, electric capacity 1C1, electric capacity 1C2, diode 1D1; When the induced electricity rheology of inductance L 1 is big; Constitute integration by resistance 1R1, electric capacity 1C1, electric capacity 1C2 and charge and discharge circuit, induced current is rectified into d. c. voltage signal through diode 1D1.Comparator circuit amplifies chip U2 by resistance 1R3, computing and constitutes; D. c. voltage signal divides two groups of outputs to be added to the 9th end and the 6th end that chip U2 is amplified in computing through resistance 1R3 current limliting; The 5th, 10 ends that amplify chip U2 with computing carry out voltage ratio; Form the transient current monitoring point by computing amplification chip U2 the 9th end, 10 ends, 8 ends, can be used as short-circuit protection and transient starting large power-consuming equipment collection point; Form small-power power consumption equipment current monitoring point by computing amplification chip U2 the 5th end, 6 ends, 7 ends; Comparator circuit is respectively by the 7th, 8 end outputs; Be connected to single chip machine controlling circuit U1 the 1st end and the 3rd end, detect high-low level by single chip machine controlling circuit U1 and judge whether to be in the instantaneous high-power electricity condition of using.
The control of the built-in time-delay counting of said single chip machine controlling circuit U1, logic determines computing can judge whether to exist high-power electricity consumption, and amplifying chip U2 the 8th end when computing is high level state; Supply current is in instantaneous unlatching high-power electric appliance equipment exactly so; Single chip machine controlling circuit U1 divides two-way output, and the first via is given alert sound amplifying circuit U3 by single chip machine controlling circuit U1 the 17th pin output low level, and secondary route single chip machine controlling circuit U1 the 20th pin is connected to drive circuit; Output low level is added to triode Q1 base stage through resistance 2R2 current limliting; Triode Q1 is ended, impel relay J 2 adhesives, the device that promotes simultaneously to ration the power supply is threaded off and is cut off the power supply.
Said gsm module radiating circuit recovers single chip machine controlling circuit U1 internal processes through watchdog circuit automatically.
Embodiment 2
As shown in Figure 2; The load current Acquisition Circuit is made up of current transformer B1, diode D1, capacitor C 1; Current transformer B1 was with output in 100: 1, and when energized, current transformer B1 secondary output end is output AC voltage in proportion; After diode D1 rectification, connect capacitor C 1 and carry out filtering, the output dc voltage signal.
The computing that comparator circuit is provided with by resistance 1R3, quota is amplified chip U2 and is constituted; D. c. voltage signal is connected to computing amplification chip U2 the 2nd end that quota is provided with through resistance R 1 current limliting, and the 3rd end that amplifies chip U2 with the computing of quota setting carries out voltage ratio, amplifies chip U2 the 1st end through computing and exports; Signal is connected to single chip machine controlling circuit U1 the 13rd end through resistance R 6; Judge through the control of single chip machine controlling circuit U1 internal processes whether high-low level sends alarm signal, when being high potential, be judged as the overvoltage phenomenon for single chip machine controlling circuit U2 the 1st end; Single chip machine controlling circuit U1 is with time-division two-way output; To alert sound amplifying circuit U3, secondary route single chip machine controlling circuit U1 the 20th pin output low level is connected to triode Q1 base stage through resistance 2R2 current limliting to the first via, and triode Q1 is ended by single chip machine controlling circuit U1 the 17th pin output low level; Impel relay J 2 adhesives, the device that promotes simultaneously to ration the power supply is threaded off and is cut off the power supply.
More than show and described basic principle and the principal character and the advantage thereof of the utility model; The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the explanation that the utility model just is described, under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications; These variations and improvement all fall in the utility model scope that requires protection, and the utility model requires protection range to be defined by appending claims and equivalent thereof.
Claims (3)
1. digit recognition device of rationing the power supply; It is characterized in that: form by load current Acquisition Circuit, comparator circuit, single chip machine controlling circuit, gsm module radiating circuit, overvoltage crowbar, alert acoustic-electric road drive circuit; The output voltage signal of said load current Acquisition Circuit collection is after comparator circuit compares; Detect high-low level through single chip machine controlling circuit; Said single chip machine controlling circuit divides alert acoustic-electric road and the output of drive circuit two-way, and said single chip machine controlling circuit connects a gsm module radiating circuit, and the signal of telecommunication after said overvoltage crowbar is handled it is transferred to comparator circuit.
2. a kind of digit recognition according to claim 1 device of rationing the power supply, it is characterized in that: said comparator circuit is provided with the current monitoring measuring point.
3. a kind of digit recognition according to claim 1 device of rationing the power supply, it is characterized in that: said single chip machine controlling circuit is connected with watchdog circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202922528U CN202172254U (en) | 2011-08-12 | 2011-08-12 | Digital recognition electric power limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202922528U CN202172254U (en) | 2011-08-12 | 2011-08-12 | Digital recognition electric power limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202172254U true CN202172254U (en) | 2012-03-21 |
Family
ID=45830440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202922528U Expired - Fee Related CN202172254U (en) | 2011-08-12 | 2011-08-12 | Digital recognition electric power limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202172254U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106647492A (en) * | 2016-12-20 | 2017-05-10 | 施耐德万高（天津）电气设备有限公司 | Alternating-current switching value signal acquisition circuit |
-
2011
- 2011-08-12 CN CN2011202922528U patent/CN202172254U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106647492A (en) * | 2016-12-20 | 2017-05-10 | 施耐德万高（天津）电气设备有限公司 | Alternating-current switching value signal acquisition circuit |
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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: 20120321 Termination date: 20120812 |