CN201927995U - Device for detecting and controlling electric power - Google Patents
Device for detecting and controlling electric power Download PDFInfo
- Publication number
- CN201927995U CN201927995U CN201120074906XU CN201120074906U CN201927995U CN 201927995 U CN201927995 U CN 201927995U CN 201120074906X U CN201120074906X U CN 201120074906XU CN 201120074906 U CN201120074906 U CN 201120074906U CN 201927995 U CN201927995 U CN 201927995U
- Authority
- CN
- China
- Prior art keywords
- resistance
- relay
- circuit
- power
- capacitor
- Prior art date
- 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
Links
Images
Abstract
The utility model discloses a device for detecting and controlling electric power, which is connected at the input end of a commercial power circuit and in an electric load. The device comprises a sampling circuit, a control circuit, a microcontroller circuit and a power circuit, wherein the sampling circuit is connected with the commercial power input end and used for acquiring the real-time electricity utilization power; the control circuit comprises a relay and used for controlling the make-and-break of the commercial power circuit; the microcontroller is connected with the sampling circuit and the control circuit and used for processing electrical signals and controlling the make-and-break of the relay; and the power circuit is used for supplying power for all parts. The device provided by the utility model has simple structure, convenience in mounting, novel and reliable principles and low cost, can be widely applied to occasions such as schools, restaurants, offices and office buildings, can intelligently identify electricity utilization conditions, reduces manual intervention, strictly limits the use of illegal electrical appliances, and guarantees the electricity use safety.
Description
Technical field
The utility model relates to a kind of electric main electrical power monitoring field, particularly a kind of be connected the line input with the electrical power detection control apparatus that is used to improve electrical safety in the electric loading.
Background technology
In order to ensure Electrical Safety, the user can install air switch in the electric main point of incoming cables usually, limits the power load on this circuit.Adopt and exist following several defectives in such a way: 1, in case overload, air switch will be jumped disconnected automatically, need user's power switch that manually closes after reducing load; 2, lack effectively monitoring and restriction for the single-piece that is no more than total load electrical equipment violating the regulations; 3, when power utilization environment changes, need reconfigure and change corresponding air switch, lack the means of adjusting flexibly.
The utility model content
The utility model purpose: technical problem to be solved in the utility model is at the deficiencies in the prior art, and a kind of electrical power detection control apparatus that improves electrical safety is provided.
In order to solve the problems of the technologies described above, the utility model discloses a kind of line input and electrical power detection control apparatus of using in the electric loading of being connected, comprising:
A sample circuit that is connected with the mains electricity input end is used to obtain real-time electric power;
A control circuit comprises a relay, is used to control the break-make of described line;
A microcontroller circuit is connected with described sample circuit and control circuit respectively, is used for the break-make that the signal of telecommunication is handled, controlled described relay;
A power circuit is used to above each several part power supply.
In the utility model, described microcontroller circuit comprises the MCU chip.
In the utility model, described sample circuit comprises resistance R 3, resistance R 4, resistance R 5 and the capacitor C 5 that is connected between line input and the MCU chip, and an end of resistance R 3, resistance R 4, resistance R 5 and capacitor C 5 connects the AD input of described MCU chip;
Described resistance R 3 is used to the alternating current of sampling, and produces to exchange pressure drop;
Described capacitor C 5 is signal filtering electric capacity, elimination electrical network high-frequency noise.
In the utility model, described microcontroller circuit comprises that resistance R 7, resistance R 8 constitute relay status and return the test section, the relay status input of MCU chip connects the normally closed point 2 of relay by described resistance R 8, and the normally closed point 2 of relay connects the vcc mouth of MCU chip by described resistance R 7.
In the utility model, described control circuit comprises capacitor C 4, diode D3, triode T1 and resistance R 6;
Two fixed points of described relay connect the two ends of diode D3 respectively, are used to provide the electric current continuous current circuit of relay control coil;
A fixed point of described relay connects the collector electrode of described triode T1, and the base stage of triode T1 is by the relay control signal output of described resistance R 6 connection MCU chips, and its emitter connects sample circuit and described capacitor C 4 respectively; Described capacitor C 4 other ends connect described power circuit, and the working power of relay control coil is provided.
In the utility model, described power circuit comprises a light-emitting diode that is connected with described microcontroller circuit, as power supply indicator.
In the utility model, it is the chip of PIC16F676 that described MCU chip adopts model.
Beneficial effect: the utility model is by installing this electric circuit inspection electricity consumption situation additional at the interchange inlet wire, can measure the current electricity consumption gross power of user, real-time monitor user ' single-piece appliance power, and according to maximum power and the single-piece electrical equipment permission power of using of setup parameter limited subscriber.Be applicable to the occasion of the Electrical Safety that requires emphasis, the use that prevents current overload, stops high-power electric appliance violating the regulations.And this apparatus structure is simple, easy for installation, principle is novel reliable, with low cost, can be widely used in occasions such as school, hotel, office, office building, but Intelligent Recognition electricity consumption situation reduces manual intervention, the use of strict restriction electrical equipment violating the regulations guarantees Electrical Safety.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is done further to specify, above-mentioned and/or otherwise advantage of the present utility model will become apparent.
Fig. 1 is embodiment circuit theory diagrams of the utility model.
Fig. 2 is a workflow diagram of the present utility model.
Embodiment
The utility model discloses a kind of line input and electrical power detection control apparatus of using in the electric loading of being connected, comprising: a sample circuit that is connected with the mains electricity input end is used to obtain real-time electric power; Described sample circuit comprises resistance R 3, resistance R 4, resistance R 5 and the capacitor C 5 that is connected between line input and the MCU chip, one end of resistance R 3, resistance R 4, resistance R 5 and capacitor C 5 connects the AD input of described MCU chip, described resistance R 3 is used to the alternating current of sampling, produce and exchange pressure drop, and connect described relay; Described capacitor C 5 is signal filtering electric capacity, elimination electrical network high-frequency noise.
Comprise a control circuit that contains relay, be used to control the break-make of described line; Described control circuit comprises capacitor C 4, diode D3, triode T1 and resistance R 6; Two fixed points of described relay connect the two ends of diode D3 respectively, are used to provide the electric current continuous current circuit of relay control coil; A fixed point of described relay connects the collector electrode of described triode T1, and the base stage of triode T1 is by the relay control signal output of described resistance R 6 connection MCU chips, and its emitter connects sample circuit and described capacitor C 4 respectively; Described capacitor C 4 other ends connect described power circuit, and the working power of relay control coil is provided.
Comprise that contains a MCU chip microcontroller circuit, be connected with described sample circuit and control circuit respectively, be used for the break-make that the signal of telecommunication is handled, controlled described relay; Described microcontroller circuit comprises that resistance R 7, resistance R 8 constitute relay status and return the test section, the relay status input of MCU chip connects the normally closed point 2 of relay by described resistance R 8, and the normally closed point 2 of relay connects the vcc mouth of MCU chip by described resistance R 7.
A power circuit is used to above each several part power supply.Described power circuit comprises a light-emitting diode that is connected with described microcontroller circuit, as power supply indicator.
In the utility model, described MCU chip is the chip that model can adopt PIC16F676.
Embodiment
Present embodiment Fig. 1 is the circuit diagram of complete realization required function, and wherein J1, J2 are for exchanging end of incoming cables (mains electricity input end), and it inserts utility grid; J3, J4 are for exchanging leading-out terminal (civil power output), and this end output connects all kinds of loads that the user uses.
Fig. 1 chips U1 is MCU, relay J K, and other are discrete component, and the model and the characteristic of its main element are as follows:
Chip U1 is MCU, adopt the PIC16F676 chip, operating voltage is 2.5V, includes 10 A/D convertor circuits of multichannel, 1K Byte program area, 128Byte data EEPROM, 64Byte SRAM, carry and work in the 4MHZRC oscillator, 12 I/O mouths, built-in Watchdog.U1 pin 13 (AN0 mouth) is configured to the AD input; Pin 6 (OUT mouth) is configured to the relay control signal output, the control relay action; Pin 8 (RC2 mouth) is configured to the relay status input, obtains the relay current state.
Relay J K is the 16A/24VDC relay, and maximum power controlling is 3500W.NPN triode T1 provides the amplification and the promotion of the actuating of relay.
Chip U2 is a TL431 voltage stabilizing chip, and MCU is provided working power.
The operation principle of device described in the utility model is described as follows.
Mains electricity input end J1, resistance R 3, capacitor C 2, diode D2, capacitor C 1 and mains electricity input end J2 constitute the half-wave charge circuit to capacitor C 2, the circuit parameter configuration makes capacitor C 2 two ends be charged to DC9V, diode D1 provides the charging backward channel among the figure, avoids exchanging the reverse voltage of negative half period to diode D2, capacitor C 2.For the direct current offset that prevents that AC network from may exist, resistance R 1 provides the release path of capacitor C 1 direct voltage.The negative pole of capacitor C 2 is that the direct current of complete machine work is with reference to ground.
Mains electricity input end J1, resistance R 3, capacitor C 4, diode D4, capacitor C 1 and mains electricity input end J2 constitute the half-wave charge circuit to capacitor C 4, the circuit parameter configuration can make capacitor C 4 two ends be charged to more than the DC18V, and this power supply provides the working power of relay control coil.
The input J2 of AC network is through to ac output end J3, and input J1 controls input power by the 6 pin output signals of MCU chip U1 and whether allows to output to output J4 through the fixed point 5 of power samples resistance R 3 cut-in relays.Diode D3 provides the electric current continuous current circuit of relay control coil, and resistance R 6 is a transistor base resistance.When 6 pin of U1 are high level, triode T1 conducting, the relay coil energising, control relay fixed point 4 is connected normal battle 3, and ac input power allows to output to output J4, and user load is connected normally electricity consumption; When 6 pin of the U1 of MCU chip were low level, triode T1 ended, and control relay fixed point 4 is connected normally closed point 2, output J4 no-output, user load outage.
Capacitor C 2, diode D5, resistance R 2, voltage stabilizing chip U2, capacitor C 3 and capacitor C 6 constitute the 2.5V direct current regulation circuit, the operate as normal power supply of MCU chip U1 is provided, wherein diode D5 is a light-emitting diode, as power supply indicator, resistance R 2 is a current-limiting resistance, voltage stabilizing chip U2 is the bypass type voltage-reg-ulator tube, and capacitor C 3, C6 are filter capacitor.
Resistance R 7, R8 constitute relay status and return testing circuit, when relay J K fixed point 4 is connected normally closed point 2,8 pin of MCU chip U1 read low level by resistance R 8, indication is at present to user's disconnection of powering, when relay fixed point 4 is connected normal the battle 3 time, 8 pin of MCU chip U1 read high level by resistance R 8, R7, and indication is at present to user's connection of powering.
Resistance R 3, resistance R 4, resistance R 5 and capacitor C 5 constitute sampling circuit, and insert 13 pin (AN0 mouth) of chip U1.Resistance R 3 sampling alternating currents produce and exchange pressure drop, and wherein capacitor C 5 is signal filtering electric capacity, elimination electrical network high-frequency noise.This ac voltage signal is divided the 13 pin AD inputs of crimping chip U1 by resistance R 4, R5.If current alternating current is I, the interchange pressure drop V1=I*R3 of resistance R 3 then, this interchange inserts U1 after resistance R 4, R5 dividing potential drop alternating voltage is 0.5*I*R3, if the supply voltage of chip U1 is VCC=2.5V, this voltage also is the reference voltage of AD conversion, and then the 13 pin input direct voltages of chip U1 are 1.25V, therefore, AD changes input voltage V=1.25+0.5*I*R3=1.25+0.05*I (V), and the digital quantity after the AD conversion is: 512+51.2*I.Chip U1 internal processes is finished ultra high speed A, through the continuous measurement of 6 power frequency periods, detects maximum Vmax and minimum value Vmin, calculates the P=Vmax-Vmin value, and this numerical value is the peak-to-peak value of supply current, can be scaled current electric power.
Fig. 2 is a workflow diagram, is carried out by the embedded software control of chip U1, and among Fig. 2, Pmax represents maximum electric power, the setup parameter of allowing; Pc represents that single-piece electrical equipment allows power, setup parameter; T represents measuring period, and the time is 6 power frequency periods, 120ms; Px represents the electrical power of current measurement; P0; The electrical power of last period measurement.
After the utility model device inserted supply line, at first capacitor C 4 was charged to more than the DC18V, and capacitor C 2 is charged to about DC9V; Relay contact is a normally off; Chip U2 voltage stabilizing is at 2.5V; Chip U1 electrification reset is carried out initialize routine, sets each register of MCU and I/O; Chip U1 reads max power constraint Pmax and the single-piece appliance power restriction Pc parameter that inner EEPROM sets.
Program control triode T1 conducting, relay J K adhesive is made war to normal, and to user's power supply, program begins detection gross power Px.If Px＞Pmax or Px＞Pc, the program control relay disconnects, and ends the user and powers half a minute, forces the user to close electrical equipment violating the regulations, guarantees Electrical Safety.Engage relay once more after half a minute detects gross power Px.This process will continue to carry out, and meet safe range up to user power utilization.
If user Px＜Pc and Px＜Pmax, circuit is to user's normal power supply, and be that a power measurement period detects current electric power by 6 power frequency periods continuously, if power measurement period is T, the electric power of measuring constantly at t0 is P0, and the power of measuring constantly at t1=t0+T is P1, when P1＜P0, power supply keeps, and writes down this P1 data, and the electrical power P 2 that is used for measuring constantly at t2=t1+T is made comparisons; When P1＞Pmax, the program control relay disconnects, and ends the user and powers half a minute, forces the user to reduce electric power, meets the restriction of electricity consumption gross power; When P1＞P0, calculate Pt=P1-P0, if Pt＞Pc ends the user and powers half a minute, force the user to stop using the single-piece electrical equipment of break rules and regulations, if Pt＜Pc, the power supply maintenance, and write down this P1 data, the electrical power P 2 that is used for measuring constantly at t2=t1+T is made comparisons.
The utility model software section comprises following function in general: timer interrupt routine, and the time base of entire circuit work is interrupted generating by this; System initialization module, it is each appointed function that each register is set behind the microcontroller electrification reset; Primary control program is measured current power, and detects the single-piece appliance power, and makes the control corresponding action; The setting of Control Parameter and obtaining, Control Parameter leaves inner EEPROM in.
The utility model provides a kind of thinking and method of electrical power detection control apparatus; the method and the approach of this technical scheme of specific implementation are a lot; the above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.The all available prior art of each part not clear and definite in the present embodiment is realized.
Claims (7)
1. one kind is connected line input and the electrical power detection control apparatus of using in the electric loading, it is characterized in that, comprising:
A sample circuit that is connected with the mains electricity input end is used to obtain real-time electric power;
A control circuit comprises a relay, is used to control the break-make of described line;
A microcontroller circuit is connected with described sample circuit and control circuit respectively, is used for the break-make that the signal of telecommunication is handled, controlled described relay;
A power circuit is used to above each several part power supply.
2. a kind of electrical power detection control apparatus according to claim 1 is characterized in that described microcontroller circuit comprises the MCU chip.
3. a kind of electrical power detection control apparatus according to claim 2, it is characterized in that, described sample circuit comprises resistance R 3, resistance R 4, resistance R 5 and the capacitor C 5 that is connected between line input and the MCU chip, and an end of resistance R 3, resistance R 4, resistance R 5 and capacitor C 5 also connects the AD input that the back connects described MCU chip;
Described resistance R 3 is used to the alternating current of sampling, and produces to exchange pressure drop;
Described capacitor C 5 is signal filtering electric capacity, elimination electrical network high-frequency noise.
4. according to claim 2 or 3 described a kind of electrical power detection control apparatuss, it is characterized in that, described microcontroller circuit comprises that resistance R 7, resistance R 8 constitute relay status and return the test section, the relay status input of MCU chip connects the normally closed point 2 of relay by described resistance R 8, and the normally closed point 2 of relay connects the vcc mouth of MCU chip by described resistance R 7.
5. according to claim 2 or 3 described a kind of electrical power detection control apparatuss, it is characterized in that described control circuit comprises capacitor C 4, diode D3, triode T1 and resistance R 6;
Two fixed points of described relay connect the two ends of diode D3 respectively, are used to provide the electric current continuous current circuit of relay control coil;
A fixed point of described relay connects the collector electrode of described triode T1, and the base stage of triode T1 is by the relay control signal output of described resistance R 6 connection MCU chips, and its emitter connects sample circuit and described capacitor C 4 respectively; Described capacitor C 4 other ends connect described power circuit, and the working power of relay control coil is provided.
6. a kind of electrical power detection control apparatus according to claim 1 is characterized in that described power circuit comprises a light-emitting diode that is connected with described microcontroller circuit, as power supply indicator.
7. a kind of electrical power detection control apparatus according to claim 2 is characterized in that, it is the chip of PIC16F676 that described MCU chip adopts model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120074906XU CN201927995U (en) | 2011-03-21 | 2011-03-21 | Device for detecting and controlling electric power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120074906XU CN201927995U (en) | 2011-03-21 | 2011-03-21 | Device for detecting and controlling electric power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201927995U true CN201927995U (en) | 2011-08-10 |
Family
ID=44431830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120074906XU Expired - Fee Related CN201927995U (en) | 2011-03-21 | 2011-03-21 | Device for detecting and controlling electric power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201927995U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110972A (en) * | 2011-03-21 | 2011-06-29 | 南京诚善科技有限公司 | Electric power detection and control device |
-
2011
- 2011-03-21 CN CN201120074906XU patent/CN201927995U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110972A (en) * | 2011-03-21 | 2011-06-29 | 南京诚善科技有限公司 | Electric power detection and control device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101617282B (en) | Power supply control device | |
| KR101473890B1 (en) | Power supply system cutting off standby electric power | |
| CN101399448B (en) | Management device and method for battery charging | |
| CN101256394B (en) | Standby control apparatus with certain nought power consumption | |
| CN103166175A (en) | Input overvoltage protection circuit for light-emitting diode (LED) driving power supply | |
| CN101021719A (en) | Electrical measurement-based control switch and switch control socket | |
| CN204390021U (en) | Office's comprehensive intelligent control system | |
| CN201392462Y (en) | Energy-saving switch device | |
| CN205453116U (en) | Survival voltage bleeder circuit and electric rice cooker | |
| CN109890115A (en) | A kind of intelligent lighting control system and its flash control circuit | |
| CN201927995U (en) | Device for detecting and controlling electric power | |
| CN208353060U (en) | A kind of battery and power supply adaptor supply power with double circuit switching circuit | |
| CN202075338U (en) | Ultralow power-consumption AC zero passage detection circuit | |
| CN208241001U (en) | A kind of power consumption control system based on Intelligent extension socket | |
| CN113030565B (en) | Load identification intelligent electric meter with input protection function | |
| CN207732484U (en) | The charging circuit of changeable TYPE C mouthfuls of chargings and A mouthfuls or C mouthfuls chargings of TYPE | |
| CN215772524U (en) | Charger mains voltage abnormity protection circuit | |
| CN201656145U (en) | Intelligent computer socket capable of eliminating power consumption of electric appliance in inactive state | |
| CN102110972A (en) | Electric power detection and control device | |
| CN205092823U (en) | Photovoltaic power generation prevents return flow device | |
| CN101834392A (en) | Intelligent electricity-saving protective control plug socket for television | |
| CN203205828U (en) | LED driving power supply input overvoltage protection circuit | |
| CN113721108A (en) | Acquisition equipment, low-power-consumption control method and transient recording type fault indicator | |
| CN208337190U (en) | A kind of energy storage device | |
| CN202032704U (en) | Air-conditioner energy saving controller |
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: 20110810 Termination date: 20140321 |