CN203981795U - A kind of power acquirer - Google Patents
A kind of power acquirer Download PDFInfo
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- CN203981795U CN203981795U CN201420323464.1U CN201420323464U CN203981795U CN 203981795 U CN203981795 U CN 203981795U CN 201420323464 U CN201420323464 U CN 201420323464U CN 203981795 U CN203981795 U CN 203981795U
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- chip microcomputer
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- electric power
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Abstract
The utility model discloses a kind of power acquirer, it comprises power supply, keyboard, display, clock circuit, serial communication circuit, single-chip microcomputer, current transformer, voltage transformer (VT) and electric power acquisition circuit, the power output end of power supply is connected with the power input end of single-chip microcomputer, the signal output part of keyboard is connected with a signal input part of single-chip microcomputer, one signal output part of single-chip microcomputer is connected with the signal input part of display, the signal output part of clock circuit is connected with the signal input part of single-chip microcomputer, electric power acquisition circuit is connected to realize signal transmitted in both directions with single-chip microcomputer, single-chip microcomputer is connected to realize signal transmitted in both directions with serial communication circuit, the signal output part of current transformer and voltage transformer (VT) is connected with the signal input part of electric power acquisition circuit respectively, serial communication circuit and outside host computer connect with signal.The utility model not only has communication function, and circuit connection is simple and reliable, has very high precision, cheap.
Description
Technical field
The utility model relates to a kind of power acquirer, belongs to technical field of power systems.
Background technology
At present, fast development along with technology of Internet of things, for each electricity consumption situation with some node of monitoring on a large scale, need a large amount of power acquirers, although existing electric energy meter also all has communication function, as 485 buses, carrier communication etc., the power acquirer expensive, cheap due to the high power acquirer of precision can not meet the demands in precision and measurement range, therefore, these power acquirers can not be in technology of Internet of things large-scale application.
Summary of the invention
Technical problem to be solved in the utility model is the defect that overcomes prior art, and a kind of power acquirer is provided, and it not only has communication function, and circuit connection is simple and reliable, has very high precision, cheap.
The utility model solves the problems of the technologies described above the technical scheme of taking: a kind of power acquirer, it comprises power supply, keyboard, display, clock circuit, serial communication circuit, single-chip microcomputer, current transformer, voltage transformer (VT) and electric power acquisition circuit, the power output end of power supply is connected with the power input end of single-chip microcomputer, the signal output part of keyboard is connected with a signal input part of single-chip microcomputer, one signal output part of single-chip microcomputer is connected with the signal input part of display, the signal output part of clock circuit is connected with the signal input part of single-chip microcomputer, electric power acquisition circuit is connected to realize signal transmitted in both directions with single-chip microcomputer, single-chip microcomputer is connected to realize signal transmitted in both directions with serial communication circuit, the signal output part of current transformer and voltage transformer (VT) is connected with the signal input part of electric power acquisition circuit respectively, serial communication circuit and outside host computer connect with signal.
Further provide a kind of voltage transformer (VT) to connect the version of three-phase wire, described voltage transformer (VT) has four ports, and four ports are connected with ground wire with A phase bus, B phase bus, the C phase bus of three-phase electricity respectively.
Further provide a kind of current transformer to connect the version of three-phase wire, described current transformer has four, and the A phase bus of described three-phase electricity, B phase bus, C phase bus and ground wire pierce into respectively four current transformers.
Adopted after technique scheme, by power supply, provide electric power for single-chip microcomputer, by keyboard input communication address, voltage transformer (VT) is for gathering the parameters of electric power such as voltage of tested three-phase electricity, current transformer is for gathering the parameters of electric power such as electric current of tested three-phase electricity, by serial communication circuit, parameters of electric power is passed to outside host computer, by display, show various parameters of electric power and mailing address, single-chip microcomputer can receive parameters of electric power received in electric power acquisition circuit, and transmitting electric power supplemental characteristic is to serial communication circuit, transmitting electric power supplemental characteristic shows for display, and can also read keyboard input, connection by above hardware realizes it and has communication function, and there is very high precision, cheap.
Accompanying drawing explanation
Fig. 1 is the theory diagram of power acquirer of the present utility model;
Fig. 2 is current transformer input circuit figure of the present utility model;
Fig. 3 is voltage transformer (VT) input circuit figure of the present utility model;
Fig. 4 is the input circuit figure of power supply of the present utility model;
Fig. 5 is the circuit diagram of serial communication circuit of the present utility model;
Fig. 6 is the circuit diagram of single-chip microcomputer of the present utility model;
Fig. 7 is the circuit diagram of electric power acquisition circuit of the present utility model.
Embodiment
For content of the present utility model is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail below.
As shown in Fig. 1 ~ 7, a kind of power acquirer, it comprises power supply, keyboard, display, clock circuit, serial communication circuit, single-chip microcomputer, current transformer, voltage transformer (VT) and electric power acquisition circuit, the power output end of power supply is connected with the power input end of single-chip microcomputer, the signal output part of keyboard is connected with a signal input part of single-chip microcomputer, one signal output part of single-chip microcomputer is connected with the signal input part of display, the signal output part of clock circuit is connected with the signal input part of single-chip microcomputer, electric power acquisition circuit is connected to realize signal transmitted in both directions with single-chip microcomputer, single-chip microcomputer is connected to realize signal transmitted in both directions with serial communication circuit, the signal output part of current transformer and voltage transformer (VT) is connected with the signal input part of electric power acquisition circuit respectively, serial communication circuit and outside host computer connect with signal.Described single-chip microcomputer is MSP430 series monolithic, and what described electric power acquisition circuit was selected is the ATT7022B chip circuit that Edwards System Technology Co., Ltd produces, as shown in Figure 7.
Described voltage transformer (VT) has four ports, and four ports are connected with ground wire with A phase bus, B phase bus, the C phase bus of three-phase electricity respectively.
Described current transformer has four, and the A phase bus of described three-phase electricity, B phase bus, C phase bus and ground wire pierce into respectively four current transformers.
Parameters of electric power comprises the voltage of three-phase electricity, the electric current of three-phase electricity, active power, reactive power, applied power, power factor (PF), device address.
Principle of work of the present utility model is as follows:
By power supply, provide electric power for single-chip microcomputer, by keyboard input communication address, voltage transformer (VT) is for gathering the parameters of electric power such as voltage of tested three-phase electricity, current transformer is for gathering the parameters of electric power such as electric current of tested three-phase electricity, by serial communication circuit, parameters of electric power is passed to outside host computer, by display, show various parameters of electric power and mailing address, single-chip microcomputer can receive parameters of electric power received in electric power acquisition circuit, and transmitting electric power supplemental characteristic is to serial communication circuit, transmitting electric power supplemental characteristic shows for display, and can also read keyboard input, connection by above hardware realizes it and has communication function, and there is very high precision, cheap.
Above-described specific embodiment; technical matters, technical scheme and beneficial effect that the utility model is solved further describe; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. a power acquirer, it is characterized in that: it comprises power supply, keyboard, display, clock circuit, serial communication circuit, single-chip microcomputer, current transformer, voltage transformer (VT) and electric power acquisition circuit, the power output end of power supply is connected with the power input end of single-chip microcomputer, the signal output part of keyboard is connected with a signal input part of single-chip microcomputer, one signal output part of single-chip microcomputer is connected with the signal input part of display, the signal output part of clock circuit is connected with the signal input part of single-chip microcomputer, electric power acquisition circuit is connected to realize signal transmitted in both directions with single-chip microcomputer, single-chip microcomputer is connected to realize signal transmitted in both directions with serial communication circuit, the signal output part of current transformer and voltage transformer (VT) is connected with the signal input part of electric power acquisition circuit respectively, serial communication circuit and outside host computer connect with signal.
2. power acquirer according to claim 1, is characterized in that: described voltage transformer (VT) has four ports, and four ports are connected with ground wire with A phase bus, B phase bus, the C phase bus of three-phase electricity respectively.
3. power acquirer according to claim 1 and 2, is characterized in that: described current transformer has four, and the A phase bus of described three-phase electricity, B phase bus, C phase bus and ground wire pierce into respectively four current transformers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420323464.1U CN203981795U (en) | 2014-06-18 | 2014-06-18 | A kind of power acquirer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420323464.1U CN203981795U (en) | 2014-06-18 | 2014-06-18 | A kind of power acquirer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203981795U true CN203981795U (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420323464.1U Expired - Fee Related CN203981795U (en) | 2014-06-18 | 2014-06-18 | A kind of power acquirer |
Country Status (1)
| Country | Link |
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| CN (1) | CN203981795U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597087A (en) * | 2015-10-20 | 2017-04-26 | 华立科技股份有限公司 | Power collection circuit having load voltage complete-compensation function and method |
-
2014
- 2014-06-18 CN CN201420323464.1U patent/CN203981795U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597087A (en) * | 2015-10-20 | 2017-04-26 | 华立科技股份有限公司 | Power collection circuit having load voltage complete-compensation function and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20180618 |