CN204789714U - A current detection system for domestic intelligent power distribution system - Google Patents
A current detection system for domestic intelligent power distribution system Download PDFInfo
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- CN204789714U CN204789714U CN201520411068.9U CN201520411068U CN204789714U CN 204789714 U CN204789714 U CN 204789714U CN 201520411068 U CN201520411068 U CN 201520411068U CN 204789714 U CN204789714 U CN 204789714U
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Abstract
The utility model relates to a current detection system for domestic intelligent power distribution system, intelligent communication terminal and current detection device including wireless connection, wireless communication module, working power supply module, current detection module and display control unit that current detection device includes central control system, is connected with central control system, current detection module includes that current sample enlargies the module and reference voltage follows the module, and this a current detection system for domestic intelligent power distribution system passes through wireless connection's intelligent communication terminal and current detection device, has realized the real time monitoring of user to household power consumption, follows pair of module coupled signal's current sample 0 simultaneously through reference voltage, has improved the detection precision of current detection module to the electric current.
Description
Technical field
The utility model relates to a kind of current detecting system for domestic intelligent distribution system.
Background technology
In our household electricity, owing to lacking good detection method, result in user and oneself electricity consumption situation is not well understood in real time, so very large waste is caused to electricity consumption.
Also have the current detecting equipment on a small quantity with Presentation Function, but these equipment are easily subject to the interference of other electrical networks, thus have impact on the measurement of electric current, cannot provide the measurement data prepared most to user.
Utility model content
The technical problems to be solved in the utility model is: in order to overcome the inadequate deficiency of prior art current measurement precision, provides a kind of and has interference rejection ability and the high current detecting system for domestic intelligent distribution system of measuring accuracy.
The utility model solves the technical scheme that its technical matters adopts: a kind of current detecting system for domestic intelligent distribution system, comprise intelligent communication terminal and the current sensing means of wireless connections, described current sensing means comprises central control system, the wireless communication module be connected with central control system, working power module, current detection module and display control module, and described current detection module comprises current sample amplification module and reference voltage follows module;
Described current sample amplification module comprises current sample amplifying circuit, described current sample amplifying circuit comprises the first current transformer, first resistance, second resistance, 3rd resistance, 4th resistance, first electric capacity, second electric capacity, 3rd electric capacity and the first operational amplifier, described first current transformer is provided with a road input and a road exports, first output terminal of described first current transformer is connected with the second output terminal of the first current transformer by the first resistance, first output terminal of described first current transformer is by the first capacity earth, second output terminal of described first current transformer is by the second capacity earth, first output terminal of described first current transformer is connected with the reverse input end of the first operational amplifier by the second resistance, second output terminal of described first current transformer is connected with the input end in the same way of the first operational amplifier, the reverse input end of described first operational amplifier is connected with the output terminal of the first operational amplifier by the 3rd resistance, the output terminal of described first operational amplifier passes through the series circuit ground connection of the 4th resistance and the 3rd electric capacity composition,
Described reference voltage is followed module and is comprised reference voltage follow circuit, described reference voltage follow circuit comprises the 5th resistance, the 6th resistance and the second operational amplifier, the inverting input of described second operational amplifier is connected with the output terminal of the second operational amplifier, the in-phase input end of described second operational amplifier is by the 5th resistance eutral grounding, and the in-phase input end of described second operational amplifier is by the external 3.3V DC voltage power supply of the 6th resistance.
Particularly, in order to improve the practicality of system, described intelligent communication terminal is smart mobile phone.
Particularly, in order to improve the reliability of system, the chip model that described central control system adopts is STM32F103VCT6.
The beneficial effects of the utility model are, this current detecting system being used for domestic intelligent distribution system, by the intelligent communication terminal of wireless connections and current sensing means, achieves the real-time monitoring of user to household electricity; Follow the buffer action of module to coupled signal by reference voltage simultaneously, improve the accuracy of detection of current detection module to electric current.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the system construction drawing of the utility model for the current detecting system of domestic intelligent distribution system;
Fig. 2 is the circuit theory diagrams of the utility model for the current sample amplifying circuit of the current detecting system of domestic intelligent distribution system;
Fig. 3 is the circuit theory diagrams of the utility model for the reference voltage follow circuit of the current detecting system of domestic intelligent distribution system;
In figure: 1. intelligent communication terminal, 2. wireless communication module, 3. working power module, 4. central control system, 5. current detection module, 6. current sample amplification module, 7. display control module, 8. reference voltage follows module, CT1. the first current transformer, R1. first resistance, R2. second resistance, R3. the 3rd resistance, R4. the 4th resistance, R5. the 5th resistance, R6. the 6th resistance, C1. first electric capacity, C2. second electric capacity, C3. the 3rd electric capacity, U1. first operational amplifier, U2. second operational amplifier.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
As shown in Figure 1-Figure 3, a kind of current detecting system for domestic intelligent distribution system, comprise intelligent communication terminal 1 and the current sensing means of wireless connections, described current sensing means comprises central control system 4, the wireless communication module 2 be connected with central control system 4, working power module 3, current detection module 5 and display control module 7, and described current detection module 5 comprises current sample amplification module 6 and reference voltage follows module 8;
Described current sample amplification module 6 comprises current sample amplifying circuit, described current sample amplifying circuit comprises the first Current Transmit 1, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3 and the first operational amplifier U1, described first Current Transmit 1 is provided with a road input and a road exports, first output terminal of described first Current Transmit 1 is connected with the second output terminal of the first Current Transmit 1 by the first resistance R1, first output terminal of described first Current Transmit 1 is by the first electric capacity C1 ground connection, second output terminal of described first Current Transmit 1 is by the second electric capacity C2 ground connection, first output terminal of described first Current Transmit 1 is connected with the reverse input end of the first operational amplifier U1 by the second resistance R2, second output terminal of described first Current Transmit 1 is connected with the input end in the same way of the first operational amplifier U1, the reverse input end of described first operational amplifier U1 is connected with the output terminal of the first operational amplifier U1 by the 3rd resistance R3, the output terminal of described first operational amplifier U1 passes through the series circuit ground connection of the 4th resistance R4 and the 3rd electric capacity C3 composition,
Described reference voltage is followed module 8 and is comprised reference voltage follow circuit, described reference voltage follow circuit comprises the 5th resistance R5, the 6th resistance R6 and the second operational amplifier U2, the inverting input of described second operational amplifier U2 is connected with the output terminal of the second operational amplifier U2, the in-phase input end of described second operational amplifier U2 is by the 5th resistance R5 ground connection, and the in-phase input end of described second operational amplifier U2 is by the external 3.3V DC voltage power supply of the 6th resistance R6.
Particularly, in order to improve the practicality of system, described intelligent communication terminal 1 is smart mobile phone.
Particularly, in order to improve the reliability of system, the chip model that described central control system 4 adopts is STM32F103VCT6.
In fact: current detection module 5 for detecting accurately electric current, thus provides reliably current data; Display control module 7 is for showing relevant electric network data to client; Wireless communication module 2, for making current sensing means and intelligent communication terminal 1 wireless connections, realizes remote control and the observation of intelligent communication terminal 1;
In fact: reference voltage follows reference voltage follow circuit in module 8, this circuit is by following reference voltage through the second operational amplifier U2, which improves the isolating power of reference voltage, decrease from the electric current of other phases to the interference of this phase, and then improve the accuracy of detection to electric current.
Compared with prior art, this current detecting system being used for domestic intelligent distribution system, by the intelligent communication terminal 1 of wireless connections and current sensing means, achieves the real-time monitoring of user to household electricity; Followed the buffer action of module 8 pairs of coupled signals simultaneously by reference voltage, improve the accuracy of detection of current detection module 5 pairs of electric currents.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on instructions, must determine its technical scope according to right.
Claims (3)
1. the current detecting system for domestic intelligent distribution system, it is characterized in that, comprise intelligent communication terminal (1) and the current sensing means of wireless connections, described current sensing means comprises central control system (4), the wireless communication module (2) be connected with central control system (4), working power module (3), current detection module (5) and display control module (7), and described current detection module (5) comprises current sample amplification module (6) and reference voltage follows module (8);
Described current sample amplification module (6) comprises current sample amplifying circuit, described current sample amplifying circuit comprises the first current transformer (CT1), first resistance (R1), second resistance (R2), 3rd resistance (R3), 4th resistance (R4), first electric capacity (C1), second electric capacity (C2), 3rd electric capacity (C3) and the first operational amplifier (U1), described first current transformer (CT1) is provided with a road input and a road exports, first output terminal of described first current transformer (CT1) is connected with the second output terminal of the first current transformer (CT1) by the first resistance (R1), first output terminal of described first current transformer (CT1) is by the first electric capacity (C1) ground connection, second output terminal of described first current transformer (CT1) is by the second electric capacity (C2) ground connection, first output terminal of described first current transformer (CT1) is connected with the reverse input end of the first operational amplifier (U1) by the second resistance (R2), second output terminal of described first current transformer (CT1) is connected with the input end in the same way of the first operational amplifier (U1), the reverse input end of described first operational amplifier (U1) is connected with the output terminal of the first operational amplifier (U1) by the 3rd resistance (R3), the series circuit ground connection that the output terminal of described first operational amplifier (U1) consists of the 4th resistance (R4) and the 3rd electric capacity (C3),
Described reference voltage is followed module (8) and is comprised reference voltage follow circuit, described reference voltage follow circuit comprises the 5th resistance (R5), 6th resistance (R6) and the second operational amplifier (U2), the inverting input of described second operational amplifier (U2) is connected with the output terminal of the second operational amplifier (U2), the in-phase input end of described second operational amplifier (U2) is by the 5th resistance (R5) ground connection, the in-phase input end of described second operational amplifier (U2) is by the external 3.3V DC voltage power supply of the 6th resistance (R6).
2., as claimed in claim 1 for the current detecting system of domestic intelligent distribution system, it is characterized in that, described intelligent communication terminal (1) is smart mobile phone.
3., as claimed in claim 1 for the current detecting system of domestic intelligent distribution system, it is characterized in that, the chip model that described central control system (4) adopts is STM32F103VCT6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520411068.9U CN204789714U (en) | 2015-06-15 | 2015-06-15 | A current detection system for domestic intelligent power distribution system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520411068.9U CN204789714U (en) | 2015-06-15 | 2015-06-15 | A current detection system for domestic intelligent power distribution system |
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| CN204789714U true CN204789714U (en) | 2015-11-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627624A (en) * | 2018-04-17 | 2018-10-09 | 上海艾晟特环保科技有限公司 | A kind of the pH signal conditions transmission circuit and water quality real-time monitoring system of extremely low power dissipation |
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2015
- 2015-06-15 CN CN201520411068.9U patent/CN204789714U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627624A (en) * | 2018-04-17 | 2018-10-09 | 上海艾晟特环保科技有限公司 | A kind of the pH signal conditions transmission circuit and water quality real-time monitoring system of extremely low power dissipation |
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