CN201133913Y - Electric energy metering chip - Google Patents
Electric energy metering chip Download PDFInfo
- Publication number
- CN201133913Y CN201133913Y CNU2007200769438U CN200720076943U CN201133913Y CN 201133913 Y CN201133913 Y CN 201133913Y CN U2007200769438 U CNU2007200769438 U CN U2007200769438U CN 200720076943 U CN200720076943 U CN 200720076943U CN 201133913 Y CN201133913 Y CN 201133913Y
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- electric energy
- liquid crystal
- utility
- energy metering
- model
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Abstract
The utility model provides an electrical energy metering chip, which comprises an electrical energy metering unit and a memory unit, and is also equipped with a liquid crystal display driving unit for driving the liquid crystal with different grades. The utility model can realize the function of the electrical energy metering, the liquid crystal display and the automatic storage via a single chip, and can not only reduce the source wastage and but also enhance the reliability of products.
Description
Technical field
The utility model relates to a kind of at electric energy computation chip, relates in particular to a kind of electric energy computation chip with liquid crystal drive unit.
Background technology
Traditional power consumption metering mainly is to utilize character wheel counter to show power consumption, present requirement according to Utilities Electric Co. of China part provinces and cities, hope replaces character wheel counter to show power consumption with liquid crystal display, and present most producers adopt Single-chip Controlling lcd drive chip and storer to realize the liquid crystal display power consumption in additional mode with electric energy computation chip, such complex process and to develop difficult cost higher.According to the increase of the requirement of the watt-hour meter requirement of liquid crystal display, if the design of this watt-hour meter realizes finishing electric energy metrical, liquid crystal display, whole functions such as storage automatically with single-chip; The wasting of resources can be reduced like this, reliability of products can be strengthened again.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of electric energy computation chip with the liquid crystal drive unit.
The utility model provides a kind of electric energy computation chip, comprises electric energy metrical unit and memory cell, also comprises the liquid crystal drive unit of selecting to drive different section liquid crystal.For example can take the type of drive of 56 sections or 160 sections can satisfy the display requirement of multiple ammeter product like this.
Further, also comprise the pulse transformation ratio selection unit that is used to select different no-load voltage ratio numbers.Promptly adopt 3 or 4 end to be set with deciding the no-load voltage ratio number, thus can produce 8 or 16 no-load voltage ratio numbers as: the no-load voltage ratio value can be: 10,100,200,400,800,1600,3200,6400,12800 etc., can provide relevant table constant according to the requirement of different tables like this.Satisfy user's design requirement fully.
The electric energy computation chip that the utility model provides is applicable to single, the three phase watt-hour meter of current liquid crystal display, have production technology simple, be easy to go into operation, characteristics such as product reliability height, and be convenient to research and development, with low cost are fit to produce in batches.
Description of drawings
Fig. 1 is the schematic block diagram according to the electric energy computation chip of the utility model one preferred embodiment.
Embodiment
Below in conjunction with accompanying drawing, concrete enforcement of the present utility model is described in further detail.
Fig. 1 represents the schematic block diagram according to the electric energy computation chip of the utility model one preferred embodiment.As shown in the figure, electric energy computation chip 1 comprises electric energy metrical unit 2, memory cell 3, liquid crystal drive unit 4 and pulse transformation ratio selection unit 5 etc.Be applicable to according to electric energy computation chip 1 of the present utility model and single-phase, the three phase watt-hour meter of current liquid crystal display, can on electric energy metrical unit 2, add anti-stealing electricity function etc. according to requirement single-phase, the three phase metering energy.Memory cell 3 preferably adopts ferroelectric memory (FRAM), but reason owing to price, preferably adopt the mode of multiple storage technology combination, as, the fraction part of electric weight adopts a kind of storer mode, for example adopt ferroelectric memory, and integral part adopts another kind of storer mode, for example storage mode such as EEROM, FLASH.Realize the function of storage automatically.The liquid crystal of different sections can be selected to drive according to requirement single-phase, the three phase metering energy in liquid crystal drive unit 4, can design the type of drive of several hop counts like this.Hop count according to the single-phase table of specific requirement of video data can lack as 56 sections, can adopt 96 sections or 160 sections and the data demand of three-phase table is many.And then the driving LCDs shows the energy counting that is stored in the memory cell.Pulse transformation ratio selection unit 5 reserves more ends that is provided with according to the constant requirement of present most electronic electric meters as far as possible, promptly adopts 3 or 4 end to be set with deciding the no-load voltage ratio number, thereby can produce 8 or 16 no-load voltage ratio numbers, as: the no-load voltage ratio value can be: 10,100,200,400,800,1600,3200,6400,12800 etc., can there be multiple constant available like this.Can take multiple counting mode, be applicable to the demand of multiple metering.
Above-mentioned only for the use of explanation the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or variation, therefore all technical schemes that are equal to also should belong to category of the present utility model, and should be limited by each claim.
Claims (3)
1, a kind of electric energy computation chip comprises electric energy metrical unit and memory cell, it is characterized in that, also comprises the liquid crystal drive unit of selecting to drive different section liquid crystal.
2, electric energy computation chip according to claim 1 is characterized in that, also comprises the pulse transformation ratio selection unit that is used to select different no-load voltage ratio numbers.
3, electric energy computation chip according to claim 1 is characterized in that, described memory cell is a ferroelectric memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200769438U CN201133913Y (en) | 2007-12-21 | 2007-12-21 | Electric energy metering chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200769438U CN201133913Y (en) | 2007-12-21 | 2007-12-21 | Electric energy metering chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201133913Y true CN201133913Y (en) | 2008-10-15 |
Family
ID=40062182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200769438U Expired - Lifetime CN201133913Y (en) | 2007-12-21 | 2007-12-21 | Electric energy metering chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201133913Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941083A (en) * | 2014-04-24 | 2014-07-23 | 张泽虎 | Dual-transformation-ratio access type electric energy meter |
-
2007
- 2007-12-21 CN CNU2007200769438U patent/CN201133913Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941083A (en) * | 2014-04-24 | 2014-07-23 | 张泽虎 | Dual-transformation-ratio access type electric energy meter |
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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: 20081015 |