CN203941247U - A kind of electric parameter measurement instrument based on ADE7878 - Google Patents
A kind of electric parameter measurement instrument based on ADE7878 Download PDFInfo
- Publication number
- CN203941247U CN203941247U CN201420208344.7U CN201420208344U CN203941247U CN 203941247 U CN203941247 U CN 203941247U CN 201420208344 U CN201420208344 U CN 201420208344U CN 203941247 U CN203941247 U CN 203941247U
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- chip
- ade7878
- chip microcomputer
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- measurement instrument
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Abstract
The utility model discloses a kind of electric parameter measurement instrument based on ADE7878, comprise single-chip microcomputer, computation chip, power supply unit, storage unit, communication unit, alarm unit, button display unit and PTC real-time clock, power supply unit is connected with computation chip with single-chip microcomputer, and provide power supply for single-chip microcomputer and computation chip, single-chip microcomputer is connected with computation chip, storage unit, communication unit, alarm unit, button display unit, PTC real-time clock, single-chip microcomputer is MC9S08AW60 single-chip microcomputer, and computation chip adopts ADE7878 chip.The utility model be take ADE7878 chip as core, can measure harmonic parameters; Have LCD Presentation Function, user also can, according to actual measurement needs, obtain corresponding data by button; Meanwhile, expanded communication interface, by network, user can remote monitoring; Also there is memory function, when needing data after can be, facilitate.
Description
Technical field
The utility model relates to power measuring instrument technical field, relates in particular to a kind of electric parameter measurement instrument based on ADE7878.
Background technology
Existing electric parameter measurement instrument needs a large amount of manually going to safeguard, reading of electric weight also needs manually to read, and the information of passing by can disappear; Be difficult in the distance know field data, must carry out to scene record; Measurement harmonic parameters difficulty.
Utility model content
The technical problems to be solved in the utility model is, provides a kind of circuit structure simple, has data storage function, and by network, user can remote monitoring, can also measure the electric parameter measurement instrument based on ADE7878 of harmonic parameters.
The utility model solves the technical scheme that its technical matters adopts: a kind of electric parameter measurement instrument based on ADE7878, comprise single-chip microcomputer, computation chip, power supply unit, storage unit, communication unit, alarm unit, button display unit and PTC real-time clock, described power supply unit is connected with described computation chip with described single-chip microcomputer, and provide power supply for described single-chip microcomputer and described computation chip, described single-chip microcomputer and described computation chip, described storage unit, described communication unit, described alarm unit, described button display unit, described PTC real-time clock connects, described single-chip microcomputer is MC9S08AW60 single-chip microcomputer, described computation chip adopts ADE7878 chip.
As a kind of improvement to technical scheme described in the utility model, described MC9S08AW60 single-chip microcomputer is to be connected by spi bus with ADE7878 chip.
As a kind of improvement to technical scheme described in the utility model, described communication unit adopts two-way level converting integrated chip.
As a kind of improvement to technical scheme described in the utility model, described chip model is MAX232.
As a kind of improvement to technical scheme described in the utility model, described display module adopts LCD display.
As a kind of improvement to technical scheme described in the utility model, described button display unit adopts independent keyboard structure, and each button independently takies the structure of an I/O mouth.
Therefore, the electric parameter measurement instrument based on ADE7878 that the utility model provides, take ADE7878 chip as core, can measure harmonic parameters; Have LCD function, user also can, according to actual measurement needs, obtain corresponding data by button; Meanwhile, expanded communication interface, cost performance is higher, and by network, user can remote monitoring, under the prerequisite of network of making rational planning for, has very good real-time and reliability; Also there is memory function, when needing data after can be, facilitate.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of the electric parameter measurement instrument based on ADE7878 of the present utility model;
Fig. 2 is the voltage modulate circuit figure of the electric parameter measurement instrument of the utility model based on ADE7878;
Fig. 3 is the voltage source circuit diagram of the electric parameter measurement instrument of the utility model based on ADE7878;
Fig. 4 is computation chip and the single-chip microcomputer connecting circuit figure of the electric parameter measurement instrument of the utility model based on ADE7878;
Fig. 5 is display unit and the single-chip microcomputer connecting circuit figure of the electric parameter measurement instrument of the utility model based on ADE7878;
Fig. 6 is communication unit and the single-chip microcomputer connecting circuit figure of the electric parameter measurement instrument of the utility model based on ADE7878;
Fig. 7 is button display unit and the single-chip microcomputer connecting circuit figure of the electric parameter measurement instrument of the utility model based on ADE7878;
Now that the label declaration in accompanying drawing is as follows: 10 is computation chip, 20 is single-chip microcomputer, and 30 is storage unit, and 40 is communication unit, and 50 is alarm unit, and 60 is button display unit, and 70 is PTC real-time clock; 80 is power supply unit; 11 is three-phase voltage, and 12 is voltage transformer (VT) and modulate circuit, and 13 is three-phase current, and 14 is current transformer and modulate circuit.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
In the utility model preferred embodiment, as shown in Figures 1 to 4, the electric parameter measurement instrument based on ADE7878 of the utility model specific embodiment, comprise single-chip microcomputer 20, computation chip 10, power supply unit 80, storage unit 30, communication unit 40, alarm unit 50, button display unit 60 and PTC real-time clock 70, power supply unit 80 is connected with computation chip 10 with single-chip microcomputer 20, and provide power supply for single-chip microcomputer 20 and computation chip 10, single-chip microcomputer 20 and computation chip 10, storage unit 0, communication unit 40, alarm unit 50, button display unit 60, PTC real-time clock 70 connects, single-chip microcomputer 20 is MC9S08AW60 single-chip microcomputer, computation chip 10 adopts ADE7878 chip.Current transformer and modulate circuit 14, voltage transformer (VT) and modulate circuit 12 are by suitable resistance, capacitance selection, outside three-phase current 13, three-phase voltage 11 are converted pro rata to the voltage of 0-2.5V scope, be convenient to ADE7878 chip and convert digital quantity to, 2.5V is the receptible maximum voltage value of ADE7878 chip.ADE7878 chip is three-phase the special metering IC, this chip changes into digital quantity by relevant internal circuit by electric current, voltage, by computing, calculate the data such as electric current, voltage effective value, idle, active power, electric flux, and be stored in relevant chip.MC9S08AW60 single-chip microcomputer and ADE7878 chip are by spi bus SCLK, MISO, and MOSI, SS is connected, and by controlling sequential, realizes register read-write, calibration, finally parameters of electric power data is taken out, and is sent to liquid crystal or networking shows.
As shown in Figure 5, display module of the present utility model adopts LCD display, the data of having read from computation chip in MC9S08AW60 single-chip microcomputer are sent to LCD display and show, LCD, as the main display device of electronic product, has the feature of himself with respect to the display unit of other types, mainly comprise: the micro-power consumption of low-voltage, flat structure, long service life, passive demonstration, demonstration contains much information, and is easy to colorize electromagnetic-radiation-free etc.
As shown in Figure 6, communication unit of the present utility model adopts two-way level converting integrated chip, and chip model is MAX232, by 232 interfaces, data is passed toward individual PC, in the enterprising line number of PC according to the show.
As shown in Figure 7, button display unit of the present utility model adopts independent keyboard structure, each button independently takies the structure of an I/O mouth, when pressing and discharge button, the level that is input to I/O port is different, Single Chip Microcomputer (SCM) program judged whether that according to the variation of different port level button is pressed and has been which button is pressed, and carries out corresponding program segment, adopts the mode of cyclic query to determine whether button is pressed in master routine.Four buttons are defined as respectively: Menu key, upwarding key, down Arrow, acknowledgement key.
Electric parameter measurement instrument based on ADE7878 of the present utility model, take ADE7878 chip as core, can measure harmonic parameters; Have LCD Presentation Function, user also can, according to actual measurement needs, obtain corresponding data by button; Meanwhile, expanded communication interface, cost performance is higher, and by network, user can remote monitoring, under the prerequisite of network of making rational planning for, has very good real-time and reliability; Also there is memory function, when needing data after can be, facilitate; In addition, there is metering forward and reverse meritorious and capacity of idle power and input and output time of origin; Recording pressure loss, defluidization and rate of qualified voltage etc., have voltage negative phase sequence, battery undervoltage, decompression, the warning function of the faults such as overcurrent; MC9S08AW60 single-chip microcomputer also has 60K flash storer, 2K RAM, flexibly and without functions such as the internal clock generator of outer member, low pressure detection, high-performance, analog to digital converter (ADC), serial communication modules.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (6)
1. the electric parameter measurement instrument based on ADE7878, it is characterized in that, comprise single-chip microcomputer, computation chip, power supply unit, storage unit, communication unit, alarm unit, button display unit and PTC real-time clock, described power supply unit is connected with described computation chip with described single-chip microcomputer, and provide power supply for described single-chip microcomputer and described computation chip, described single-chip microcomputer and described computation chip, described storage unit, described communication unit, described alarm unit, described button display unit, described PTC real-time clock connects, described single-chip microcomputer is MC9S08AW60 single-chip microcomputer, described computation chip adopts ADE7878 chip.
2. the electric parameter measurement instrument based on ADE7878 according to claim 1, is characterized in that, described MC9S08AW60 single-chip microcomputer is to be connected by spi bus with ADE7878 chip.
3. the electric parameter measurement instrument based on ADE7878 according to claim 1, is characterized in that, described communication unit adopts two-way level converting integrated chip.
4. the electric parameter measurement instrument based on ADE7878 according to claim 3, is characterized in that, described two-way level converting integrated chip model is MAX232.
5. the electric parameter measurement instrument based on ADE7878 according to claim 1, is characterized in that, described display module adopts LCD display.
6. the electric parameter measurement instrument based on ADE7878 according to claim 1, is characterized in that, described button display unit adopts independent keyboard structure, and each button independently takies the structure of an I/O mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420208344.7U CN203941247U (en) | 2014-04-28 | 2014-04-28 | A kind of electric parameter measurement instrument based on ADE7878 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420208344.7U CN203941247U (en) | 2014-04-28 | 2014-04-28 | A kind of electric parameter measurement instrument based on ADE7878 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203941247U true CN203941247U (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420208344.7U Expired - Fee Related CN203941247U (en) | 2014-04-28 | 2014-04-28 | A kind of electric parameter measurement instrument based on ADE7878 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561353A (en) * | 2017-10-25 | 2018-01-09 | 河南苗硕科技有限公司 | A kind of electric parameter measurement system |
-
2014
- 2014-04-28 CN CN201420208344.7U patent/CN203941247U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561353A (en) * | 2017-10-25 | 2018-01-09 | 河南苗硕科技有限公司 | A kind of electric parameter measurement system |
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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 |
Granted publication date: 20141112 Termination date: 20170428 |
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| CF01 | Termination of patent right due to non-payment of annual fee |