CN201724979U - Portable data reader for electric energy meter - Google Patents
Portable data reader for electric energy meter Download PDFInfo
- Publication number
- CN201724979U CN201724979U CN2010202162826U CN201020216282U CN201724979U CN 201724979 U CN201724979 U CN 201724979U CN 2010202162826 U CN2010202162826 U CN 2010202162826U CN 201020216282 U CN201020216282 U CN 201020216282U CN 201724979 U CN201724979 U CN 201724979U
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- circuit
- electric energy
- energy meter
- data reader
- memory
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- Expired - Fee Related
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Abstract
The utility model relates to the field of metering technology, in particular to a portable data reader for an electric energy meter. The portable data reader for the electric energy meter is characterized by comprising a singlechip circuit, a liquid crystal circuit and a memory interface circuit, wherein the singlechip circuit is respectively and electrically connected with the liquid crystal circuit and the memory interface circuit. When the content of the memory of the electric energy meter needs to be read, the short-circuit point of a circuit of the memory of the electric energy meter, which is connected in series with a power circuit and the short-circuit point which is connected in series with an I2C interface are disconnected firstly, an outgoing line of the memory interface circuit is connected with the interface of a memory of the electric energy meter to be read in a certain direction, and then corresponding data in the memory of the electric energy meter can be read just by pressing a power switch. The portable data reader for the electric energy meter has the advantages of convenient use and carry.
Description
Technical field
The utility model relates to field of measuring techniques, is a kind of portable electric meter data reader.
Background technology
In a single day existing electric energy meter damages, and liquid crystal can't show normally that just the meter reading personnel can't read the total electric weight of user's accumulative total in the scene.
Summary of the invention
The purpose of this utility model is, in case also can read the total electric weight of user's accumulative total in the scene when providing a kind of electric energy meter to damage, uses and carry all portable electric meter data reader easily.
The purpose of this utility model is realized by following technical scheme; A kind of portable electric meter data reader is characterized in that: it comprises single chip circuit, liquid crystal circuit and memory interface circuit, and single chip circuit is electrically connected with liquid crystal circuit and memory interface circuit respectively.
Described memory interface circuit comprises resistance R 36, R57 and capacitor C 18, is connected with single- chip microcomputer 9,10 pin of single chip circuit by plug-in unit J4.
Described liquid crystal circuit comprises that model is the BU9793 lcd drive chip, passes through I
2C interface is connected with single- chip microcomputer 17,18 pin of single chip circuit.
Described single chip circuit comprises that model is the NEC78F9222 singlechip chip, resistance 27, capacitor C 13-C15, C28 and crystal oscillator XT2.
Portable electric meter data reader of the present utility model in the time of will reading electric energy meter access to memory content, disconnects the electric power loop serial connection short dot and the I of electric energy meter memory circuitry earlier
2C interface serial connection short dot, the extension line by memory interface circuit plug-in unit J4 links to each other with the interface that is read the electric energy meter storer according to certain orientation, presses power switch and promptly can read electric energy meter memory inside corresponding data.Have and use and carry advantages such as all convenient.
Description of drawings
Fig. 1 portable electric meter data reader schematic block circuit diagram.
Fig. 2 power-supplying circuit 1.
Fig. 3 memory interface circuit 2.
Fig. 4 liquid crystal circuit 3.
Fig. 5 single chip circuit 4.
Embodiment
The utility model is described in further detail to utilize the drawings and specific embodiments below.
With reference to Fig. 1, the portable electric meter data reader has power-supplying circuit 1, memory interface circuit 2, liquid crystal circuit 3 and single chip circuit 4,
With reference to Fig. 1 and 2, power-supplying circuit 1 provides power supply for the portable electric meter data reader, uses the 9V powered battery.
With reference to Fig. 1 and 2, memory interface circuit 2 comprises resistance R 36, R57 and capacitor C 18, is connected with single- chip microcomputer 9,10 pin of single chip circuit by plug-in unit J4.
With reference to Fig. 1 and 3, liquid crystal circuit 3 comprises that model is the BU9793 lcd drive chip, passes through I
2C interface is connected with single- chip microcomputer 17,18 pin of single chip circuit.I
2C interface is a kind of control technology of computing machine, belongs to the twin wire universal serial bus, and it can be transmitted and receive data by the universal serial bus that data line SDA and clock SCL constitute.
With reference to Fig. 1 and 4, single chip circuit 4 comprises that model is the NEC78F9222 singlechip chip, resistance 27, capacitor C 13-C15, C28 and crystal oscillator XT2.Model is 8 flash single-chip microcomputers for the NEC78F9222 singlechip chip, and its main resource is as follows: 4Kflash, 256 byte RAM, 17 I/O mouths, 9/ external interrupt mouth, 4 tunnel 10 AD, 1,48 bit timing device of asynchronous serial port (UART), WatchDog Timer, low-voltages detect (LVD) reset function.
Portable electric meter data reader of the present utility model in the time of will reading memory content when electric energy meter damages, disconnects the electric power loop serial connection short dot and the I of electric energy meter memory circuitry earlier
2C interface serial connection short dot links to each other with the interface that is read storer according to certain orientation by memory interface circuit plug-in unit J4 extension line, presses power switch and promptly can read the memory inside corresponding data.
Claims (4)
1. portable electric meter data reader, it is characterized in that: it comprises single chip circuit, liquid crystal circuit and memory interface circuit, single chip circuit is electrically connected with liquid crystal circuit and memory interface circuit respectively.
2. portable electric meter data reader according to claim 1 is characterized in that: described memory interface circuit comprises resistance R 36, R57 and capacitor C 18, is connected with single-chip microcomputer 9,10 pin of single chip circuit by plug-in unit J4.
3. portable electric meter data reader according to claim 1 is characterized in that: described liquid crystal circuit comprises that model is the BU9793 lcd drive chip, passes through I
2C interface is connected with single-chip microcomputer 17,18 pin of single chip circuit.
4. portable electric meter data reader according to claim 1 is characterized in that: described single chip circuit comprises that model is the NEC78F9222 singlechip chip, resistance 27, capacitor C 13-C15, C28 and crystal oscillator XT2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202162826U CN201724979U (en) | 2010-06-01 | 2010-06-01 | Portable data reader for electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202162826U CN201724979U (en) | 2010-06-01 | 2010-06-01 | Portable data reader for electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201724979U true CN201724979U (en) | 2011-01-26 |
Family
ID=43493319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202162826U Expired - Fee Related CN201724979U (en) | 2010-06-01 | 2010-06-01 | Portable data reader for electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201724979U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353549A (en) * | 2013-07-24 | 2013-10-16 | 江苏斯菲尔电气股份有限公司 | Electric energy data recovery apparatus of electric power meter and electric energy data recovery method |
-
2010
- 2010-06-01 CN CN2010202162826U patent/CN201724979U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353549A (en) * | 2013-07-24 | 2013-10-16 | 江苏斯菲尔电气股份有限公司 | Electric energy data recovery apparatus of electric power meter and electric energy data recovery method |
| CN103353549B (en) * | 2013-07-24 | 2016-04-06 | 江苏斯菲尔电气股份有限公司 | The energy data recovery device of electric instrument and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20110601 |