CN203084042U - Seven-pole three-phase lower connecting type multifunctional guide rail type electric energy meter - Google Patents
Seven-pole three-phase lower connecting type multifunctional guide rail type electric energy meter Download PDFInfo
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- CN203084042U CN203084042U CN 201320079502 CN201320079502U CN203084042U CN 203084042 U CN203084042 U CN 203084042U CN 201320079502 CN201320079502 CN 201320079502 CN 201320079502 U CN201320079502 U CN 201320079502U CN 203084042 U CN203084042 U CN 203084042U
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Abstract
The utility model provides a seven-pole three-phase lower connecting type multifunctional guide rail type electric energy meter. A control panel is arranged inside the electric energy meter, a phase A, phase B and phase C wire inlet and outlet opening is positioned at the bottom of the electric energy meter, a zero clearing press key used for zero clearing operation is arranged on the electric energy meter, the control panel comprises a sampling circuit, a chip, a display circuit and a power supply circuit, the sampling circuit, the chip and the display circuit are sequentially connected, the chip adopts MCP430F47197, the sampling circuit comprises a current sampling circuit and a voltage sampling circuit, current transformers are respectively and serially connected between the current sampling circuit and the phase A, phase B and phase C wire inlet and outlet opening, the control panel is provided with a reset circuit, the input end of the reset circuit is connected with the zero clearing press key, the output end of the reset circuit is connected with a reset pin of the chip, the control panel is provided with a clock module, and the clock module is connected with the chip. The seven-pole three-phase lower connecting type multifunctional guide rail type electric energy meter has the advantages that through the arrangement of the zero clearing press key and the reset circuit, the accumulated metering of the electric energy meter can be subjected to zero clearing processing, and the re-metering according to requirements can be realized.
Description
Technical field
The utility model relates to a kind of three-phase guide rail type electrical energy meter, is specifically related to the multi-functional guide rail type electrical energy meter of a kind of seven utmost point three-phase downward joint types.
Background technology
Three-phase multifunctional electrical energy meter designs at the power monitoring demand of electric system, industrial and mining enterprises, communal facility, intelligent building.The parameters of electric power commonly used that its energy measurement is all, as three-phase current, voltage, meritorious, reactive power, electric degree, harmonic wave etc., present three-phase multifunctional electrical energy meter does not have the zero clearing setting mostly, and adopts counter as demonstration, when it reaches the maximal value of counting, automatically transfer to since 0, inconvenient user removes to understand power consumption.
And have to go to monitor the power consumption of every month the time as the user, when not having zero clearing when being provided with, a month used electric weight before needing artificial going to remember, again according to the power consumption of this month, obtain current use amount, when forgetting the power consumption of last month, just be difficult to draw current use amount, make the power consumption memory chaotic.
The utility model content
In order to solve the deficiency of above-mentioned technology, the purpose of this utility model provides the multi-functional guide rail type electrical energy meter of a kind of seven utmost point three-phase downward joint types, and it has solved the deficiency that three-phase multifunctional electrical energy meter shortage zero clearing in the past is provided with.
The technical scheme that its technical matters that solves the utility model adopts is:
The multi-functional guide rail type electrical energy meter of a kind of seven utmost point three-phase downward joint types, it comprises the electric energy meter body, described electric energy meter body is provided with the A phase, the B phase, C phase wire inlet-outlet, the guide tracked mounting structure of DIN35mm is adopted in described electric energy meter body back, described electric energy meter body interior is provided with control panel, described A phase, the B phase, C phase wire inlet-outlet is positioned at electric energy meter body bottom, described electric energy meter body is provided with the zero clearing button that is used for clear operation, described control panel comprises sample circuit, chip, display circuit and the power circuit that is used to provide power supply, described sample circuit, chip, display circuit connects successively, described chip adopts MCP430F47197, described sample circuit comprise respectively with A mutually, the B phase, C phase incoming line connects be used for current sampling circuit that current data gathers and respectively with A mutually, the B phase, the voltage sampling circuit that is used for the voltage data collection that C phase incoming line connects, described current sampling circuit and A are mutually, the B phase, difference series current mutual inductor between the C phase incoming line, described control panel is provided with the reset circuit that is used for the zero clearing of electric energy meter continuous data, the input end of described reset circuit is connected with the zero clearing button, the output terminal of described reset circuit is connected with the resetting pin of chip, described control panel also is provided with the clock module that is used for the electric energy timing, and described clock module is connected with chip.
Described power circuit comprise respectively with A mutually, the power supply input circuit that constitutes of the employing transformer that connects of B phase, C phase incoming line, is connected with power supply input circuit, be used to provide burning voltage mu balanced circuit, be used for the charging circuit that data on file is preserved the data maintenance battery that power supply is provided and is used for data maintenance battery is charged.
Described display circuit comprises 7 LCD or 5+1 position step-by-step counter.
Described clock circuit comprises crystal oscillator.
Described electric energy meter body is provided with the RS485 communication interface that is used to communicate to connect, and described control panel is provided with RS485 communication change-over circuit, and described RS485 communication change-over circuit is connected with communication interface.
Be provided with the eeprom memory that is used for data on file in the described electric energy meter body.
Described control panel comprises the pulse indicating circuit that has been used for indicative function, and described pulse indicating circuit adopts light emitting diode.
Described control panel is provided with and is used for and the infrared infrared communication circuit that is connected of palm PC.
The beneficial effects of the utility model are, by zero clearing button and reset circuit are set, can carry out zero clearing to the cumulative measurement of electric energy meter and handle, and can realize measuring again as required.
Description of drawings
Fig. 1 is a logical schematic of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified:
Referring to Fig. 1, the utility model comprises the electric energy meter body, described electric energy meter body is provided with the A phase, the B phase, C phase wire inlet-outlet, the guide tracked mounting structure of DIN35mm is adopted in described electric energy meter body back, described electric energy meter body interior is provided with control panel, described A phase, the B phase, C phase wire inlet-outlet is positioned at electric energy meter body bottom, described electric energy meter body is provided with the zero clearing button that is used for clear operation, described control panel comprises sample circuit 2, chip 1, display circuit 10 and the power circuit 11 that is used to provide power supply, described sample circuit 2, chip 1, display circuit 10 connects successively, described chip 1 adopts MCP430F47197, described sample circuit 2 comprise respectively with A mutually, the B phase, C phase incoming line connects be used for current sampling circuit 21 that current data gathers and respectively with A mutually, the B phase, the voltage sampling circuit 22 that is used for the voltage data collection that C phase incoming line connects, described current sampling circuit 21 and A are mutually, the B phase, difference series current mutual inductor 5 between the C phase incoming line, described control panel is provided with the reset circuit 4 that is used for the zero clearing of electric energy meter continuous data, the input end of described reset circuit 4 is connected with the zero clearing button, the output terminal of described reset circuit 4 is connected with the resetting pin of chip 1, described control panel also is provided with the clock module 3 that is used for the electric energy timing, and described clock module 3 is connected with chip 1.
The utility model adopts 3 current sampling circuits 21, respectively with A mutually, connect by current transformer 5 between the B phase, C phase incoming line, be used to detect each phase input current, adopt the access of current transformer 5 can increase the electric current that bears of electric energy meter simultaneously, 3 voltage sampling circuits 22 respectively with A mutually, B phase, C phase incoming line connect, be used to detect each phase input voltage, detect the variation of monitoring each phase current, voltage respectively by three the tunnel.
The function of electric energy computation chip that described MCP430F47197 is integrated, can directly directly obtain energy value by the voltage and current value that collects, reduced the complicacy of design circuit, adopt the higher chip of integrated level simultaneously, can avoid the electromagnetic interference (EMI) that the circuit connection produces between the multiple chips, influence the accuracy of electric energy meter, MCP430F47197 has the function that can directly connect LCD simultaneously, do not need to redesign display circuit 10, can realize the demonstration of lighting of LCD directly by being connected with the pin of LCD.
The data that sample circuit 2 is gathered are input to chip 1, obtain energy value by chip 1 built-in multiplier, and received data and the energy data that obtains are shown by display circuit 10.The utility model is provided with reset circuit 4 simultaneously, and described reset circuit 4 is connected with the zero clearing button, by the closure of zero clearing button, 4 work of control reset circuit, the output reset signal resets chip 1 to chip 1, display circuit 10 data presented is carried out zero clearing handle.
Described power circuit 11 comprise respectively with A mutually, the power supply input circuit 111 that constitutes of the employing transformer that connects of B phase, C phase incoming line, is connected with power supply input circuit 111, be used to provide burning voltage mu balanced circuit 112, be used for the charging circuit 113 that data on file is preserved the data maintenance battery 114 that power supply is provided and is used for data maintenance battery 114 is charged.Described power supply input circuit 111, by transformer input voltage is reduced to and is fit to the required magnitude of voltage of mu balanced circuit 112, guarantee that mu balanced circuit 112 can operate as normal, the output voltage of mu balanced circuit 112 is used for providing operating voltage to the utility model, also can keep battery 114 to charge simultaneously by 113 pairs of data of charging circuit, guarantee that electric energy meter in use owing to have a power failure, the phenomenon of loss of data can not occur.
Described display circuit 10 comprises 7 LCD or 5+1 position step-by-step counter, display circuit 10 can adopt LCD, is connected with the direct of LCD by chip 1, realizes data presentation, perhaps adopt stepper motor receiving chip 1 output pulse signal, control 5+1 position step-by-step counter counting.
Described clock circuit 3 comprises crystal oscillator, and described crystal oscillator adopts 32.768KHz and 8MHz respectively, and the start-oscillation circuit by adopting corresponding crystal oscillator to constitute provides clock signal to chip 1 respectively, guarantees the timing accuracy of electric energy meter.
Described electric energy meter body is provided with the RS485 communication interface that is used to communicate to connect, and described control panel is provided with RS485 communication change-over circuit 9, and described RS485 communication change-over circuit 9 is connected with communication interface.By the RS485 communication interface, realize that electric energy meter is connected with the long-range of host computer, can be directly in the enterprising line data inquiry of host computer.
Be provided with the eeprom memory 6 that is used for data on file in the described electric energy meter body.Adopt eeprom memory 6, can realize the storage of electric energy meter monitor data, convenient calling later checked.
Described control panel comprises the pulse indicating circuit 7 that has been used for indicative function, and described pulse indicating circuit 7 adopts light emitting diode, as the indicative function of output pulse signal.
Described control panel is provided with and is used for and the infrared infrared communication circuit 8 that is connected of palm PC.The design of infrared communication circuit 8 has realized that palm PC is connected with local communication of the present utility model, and the worker that conveniently checks meter directly obtains the utility model Monitoring Data by palm PC.
The circuit that the utility model adopted is electronic applications circuit commonly used, so be not described in detail, the peripheral circuit of chip can obtain with reference to the databook of described chip simultaneously.
Embodiment should not be considered as restriction of the present utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection domain of the present utility model.
Claims (8)
1. multi-functional guide rail type electrical energy meter of utmost point three-phase downward joint type, it comprises the electric energy meter body, described electric energy meter body is provided with the A phase, the B phase, C phase wire inlet-outlet, the guide tracked mounting structure of DIN35mm is adopted in described electric energy meter body back, described electric energy meter body interior is provided with control panel, it is characterized in that: described A phase, the B phase, C phase wire inlet-outlet is positioned at electric energy meter body bottom, described electric energy meter body is provided with the zero clearing button that is used for clear operation, described control panel comprises sample circuit (2), chip (1), display circuit (10) and the power circuit (11) that is used to provide power supply, described sample circuit (2), chip (1), display circuit (10) connects successively, described chip (1) adopts MCP430F47197, described sample circuit (2) comprise respectively with A mutually, the B phase, C phase incoming line connects be used for current sampling circuit (21) that current data gathers and respectively with A mutually, the B phase, the voltage sampling circuit (22) that is used for the voltage data collection that C phase incoming line connects, described current sampling circuit (21) and A are mutually, the B phase, difference series current mutual inductor (5) between the C phase incoming line, described control panel is provided with the reset circuit (4) that is used for the zero clearing of electric energy meter continuous data, the input end of described reset circuit (4) is connected with the zero clearing button, the output terminal of described reset circuit (4) is connected with the resetting pin of chip (1), described control panel also is provided with the clock module (3) that is used for the electric energy timing, and described clock module (3) is connected with chip (1).
2. the multi-functional guide rail type electrical energy meter of seven utmost point three-phase downward joint types according to claim 1, it is characterized in that, described power circuit (11) comprise respectively with A mutually, the power supply input circuit (111) that constitutes of the employing transformer that connects of B phase, C phase incoming line, is connected with power supply input circuit (111), be used to provide burning voltage mu balanced circuit (112), be used for the charging circuit (113) that data on file is preserved the data maintenance battery (114) that power supply is provided and is used for data maintenance batteries (114) are charged.
3. the multi-functional guide rail type electrical energy meter of seven utmost point three-phase downward joint types according to claim 1 is characterized in that described display circuit (10) comprises 7 LCD or 5+1 position step-by-step counter.
4. the multi-functional guide rail type electrical energy meter of seven utmost point three-phase downward joint types according to claim 1 is characterized in that described clock circuit (3) comprises crystal oscillator.
5. the multi-functional guide rail type electrical energy meter of seven utmost point three-phase downward joint types according to claim 1, it is characterized in that, described electric energy meter body is provided with the RS485 communication interface that is used to communicate to connect, described control panel is provided with RS485 communication change-over circuit (9), and described RS485 communication change-over circuit (9) is connected with communication interface.
6. the multi-functional guide rail type electrical energy meter of seven utmost point three-phase downward joint types according to claim 1 is characterized in that, is provided with the eeprom memory (6) that is used for data on file in the described electric energy meter body.
7. the multi-functional guide rail type electrical energy meter of seven utmost point three-phase downward joint types according to claim 1 is characterized in that described control panel comprises the pulse indicating circuit (7) that has been used for indicative function, and described pulse indicating circuit (7) adopts light emitting diode.
8. the multi-functional guide rail type electrical energy meter of seven utmost point three-phase downward joint types according to claim 1 is characterized in that, described control panel is provided with and is used for and the infrared infrared communication circuit (8) that is connected of palm PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320079502 CN203084042U (en) | 2013-02-21 | 2013-02-21 | Seven-pole three-phase lower connecting type multifunctional guide rail type electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320079502 CN203084042U (en) | 2013-02-21 | 2013-02-21 | Seven-pole three-phase lower connecting type multifunctional guide rail type electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203084042U true CN203084042U (en) | 2013-07-24 |
Family
ID=48829867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320079502 Expired - Lifetime CN203084042U (en) | 2013-02-21 | 2013-02-21 | Seven-pole three-phase lower connecting type multifunctional guide rail type electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203084042U (en) |
-
2013
- 2013-02-21 CN CN 201320079502 patent/CN203084042U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |